interface_widgets.c

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. 
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2009 Blender Foundation.
 * All rights reserved.
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>


#include "DNA_screen_types.h"
#include "DNA_userdef_types.h"

#include "BLI_math.h"
#include "BLI_listbase.h"
#include "BLI_rect.h"
#include "BLI_string.h"
#include "BLI_utildefines.h"

#include "BKE_context.h"
#include "BKE_curve.h"
#include "BKE_utildefines.h"

#include "RNA_access.h"

#include "BIF_gl.h"
#include "BIF_glutil.h"

#include "BLF_api.h"

#include "UI_interface.h"
#include "UI_interface_icons.h"


#include "interface_intern.h"

/* ************** widget base functions ************** */
/*
         - in: roundbox codes for corner types and radius
         - return: array of [size][2][x,y] points, the edges of the roundbox, + UV coords
 
         - draw black box with alpha 0 on exact button boundbox
         - for ever AA step:
                - draw the inner part for a round filled box, with color blend codes or texture coords
                - draw outline in outline color
                - draw outer part, bottom half, extruded 1 pixel to bottom, for emboss shadow
                - draw extra decorations
         - draw background color box with alpha 1 on exact button boundbox
 
 */

/* fill this struct with polygon info to draw AA'ed */
/* it has outline, back, and two optional tria meshes */

typedef struct uiWidgetTrias {
        int tot;
        
        float vec[32][2];
        int (*index)[3];
        
} uiWidgetTrias;

typedef struct uiWidgetBase {
        
        int totvert, halfwayvert;
        float outer_v[64][2];
        float inner_v[64][2];
        float inner_uv[64][2];
        
        short inner, outline, emboss; /* set on/off */
        short shadedir;
        
        uiWidgetTrias tria1;
        uiWidgetTrias tria2;
        
} uiWidgetBase;

/* uiWidgetType: for time being only for visual appearance,
   later, a handling callback can be added too 
*/
typedef struct uiWidgetType {
        
        /* pointer to theme color definition */
        uiWidgetColors *wcol_theme;
        uiWidgetStateColors *wcol_state;
        
        /* converted colors for state */
        uiWidgetColors wcol;
        
        void (*state)(struct uiWidgetType *, int state);
        void (*draw)(uiWidgetColors *, rcti *, int state, int roundboxalign);
        void (*custom)(uiBut *, uiWidgetColors *, rcti *, int state, int roundboxalign);
        void (*text)(uiFontStyle *, uiWidgetColors *, uiBut *, rcti *);
        
} uiWidgetType;


/* *********************** draw data ************************** */

static float cornervec[9][2]= {{0.0, 0.0}, {0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169}, 
{0.707, 0.293}, {0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}, {1.0, 1.0}};

static float jit[8][2]= {{0.468813 , -0.481430}, {-0.155755 , -0.352820}, 
{0.219306 , -0.238501},  {-0.393286 , -0.110949}, {-0.024699 , 0.013908}, 
{0.343805 , 0.147431}, {-0.272855 , 0.269918}, {0.095909 , 0.388710}};

static float num_tria_vert[3][2]= { 
{-0.352077, 0.532607}, {-0.352077, -0.549313}, {0.330000, -0.008353}};

static int num_tria_face[1][3]= {
{0, 1, 2}};

static float scroll_circle_vert[16][2]= {
{0.382684, 0.923879}, {0.000001, 1.000000}, {-0.382683, 0.923880}, {-0.707107, 0.707107},
{-0.923879, 0.382684}, {-1.000000, 0.000000}, {-0.923880, -0.382684}, {-0.707107, -0.707107},
{-0.382683, -0.923880}, {0.000000, -1.000000}, {0.382684, -0.923880}, {0.707107, -0.707107},
{0.923880, -0.382684}, {1.000000, -0.000000}, {0.923880, 0.382683}, {0.707107, 0.707107}};

static int scroll_circle_face[14][3]= {
{0, 1, 2}, {2, 0, 3}, {3, 0, 15}, {3, 15, 4}, {4, 15, 14}, {4, 14, 5}, {5, 14, 13}, {5, 13, 6}, 
{6, 13, 12}, {6, 12, 7}, {7, 12, 11}, {7, 11, 8}, {8, 11, 10}, {8, 10, 9}};

static float menu_tria_vert[6][2]= {
{-0.41, 0.16}, {0.41, 0.16}, {0, 0.82}, 
{0, -0.82}, {-0.41, -0.16}, {0.41, -0.16}};

static int menu_tria_face[2][3]= {{2, 0, 1}, {3, 5, 4}};

static float check_tria_vert[6][2]= {
{-0.578579, 0.253369},  {-0.392773, 0.412794},  {-0.004241, -0.328551}, 
{-0.003001, 0.034320},  {1.055313, 0.864744},   {0.866408, 1.026895}};

static int check_tria_face[4][3]= {
{3, 2, 4}, {3, 4, 5}, {1, 0, 3}, {0, 2, 3}};

GLubyte checker_stipple_sml[32*32/8] =
{
        255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0, \
        255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0, \
        0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255, \
        0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255, \
        255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0, \
        255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0, \
        0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255, \
        0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255, \
};

/* ************************************************* */

void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3)
{
        float color[4];
        int j;
        
        glEnable(GL_BLEND);
        glGetFloatv(GL_CURRENT_COLOR, color);
        color[3]*= 0.125;
        glColor4fv(color);
        
        /* for each AA step */
        for(j=0; j<8; j++) {
                glTranslatef(1.0f * jit[j][0], 1.0f * jit[j][1], 0.0f);

                glBegin(GL_POLYGON);
                glVertex2f(x1, y1);
                glVertex2f(x2, y2);
                glVertex2f(x3, y3);
                glEnd();
                
                glTranslatef(-1.0f * jit[j][0], -1.0f * jit[j][1], 0.0f);
        }

        glDisable(GL_BLEND);
        
}

static void widget_init(uiWidgetBase *wtb)
{
        wtb->totvert= wtb->halfwayvert= 0;
        wtb->tria1.tot= 0;
        wtb->tria2.tot= 0;
        
        wtb->inner= 1;
        wtb->outline= 1;
        wtb->emboss= 1;
        wtb->shadedir= 1;
}

/* helper call, makes shadow rect, with 'sun' above menu, so only shadow to left/right/bottom */
/* return tot */
static int round_box_shadow_edges(float (*vert)[2], rcti *rect, float rad, int roundboxalign, float step)
{
        float vec[9][2];
        float minx, miny, maxx, maxy;
        int a, tot= 0;
        
        rad+= step;
        
        if(2.0f*rad > rect->ymax-rect->ymin)
                rad= 0.5f*(rect->ymax-rect->ymin);
        
        minx= rect->xmin-step;
        miny= rect->ymin-step;
        maxx= rect->xmax+step;
        maxy= rect->ymax+step;
        
        /* mult */
        for(a=0; a<9; a++) {
                vec[a][0]= rad*cornervec[a][0]; 
                vec[a][1]= rad*cornervec[a][1]; 
        }
        
        /* start with left-top, anti clockwise */
        if(roundboxalign & 1) {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= minx+rad-vec[a][0];
                        vert[tot][1]= maxy-vec[a][1];
                }
        }
        else {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= minx;
                        vert[tot][1]= maxy;
                }
        }
        
        if(roundboxalign & 8) {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= minx+vec[a][1];
                        vert[tot][1]= miny+rad-vec[a][0];
                }
        }
        else {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= minx;
                        vert[tot][1]= miny;
                }
        }
        
        if(roundboxalign & 4) {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= maxx-rad+vec[a][0];
                        vert[tot][1]= miny+vec[a][1];
                }
        }
        else {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= maxx;
                        vert[tot][1]= miny;
                }
        }
        
        if(roundboxalign & 2) {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= maxx-vec[a][1];
                        vert[tot][1]= maxy-rad+vec[a][0];
                }
        }
        else {
                for(a=0; a<9; a++, tot++) {
                        vert[tot][0]= maxx;
                        vert[tot][1]= maxy;
                }
        }
        return tot;
}

/* this call has 1 extra arg to allow mask outline */
static void round_box__edges(uiWidgetBase *wt, int roundboxalign, rcti *rect, float rad, float radi)
{
        float vec[9][2], veci[9][2];
        float minx= rect->xmin, miny= rect->ymin, maxx= rect->xmax, maxy= rect->ymax;
        float minxi= minx + 1.0f; /* boundbox inner */
        float maxxi= maxx - 1.0f;
        float minyi= miny + 1.0f;
        float maxyi= maxy - 1.0f;
        float facxi= (maxxi!=minxi) ? 1.0f/(maxxi-minxi) : 0.0f; /* for uv, can divide by zero */
        float facyi= (maxyi!=minyi) ? 1.0f/(maxyi-minyi) : 0.0f;
        int a, tot= 0, minsize;
        const int hnum= ((roundboxalign & (1|2))==(1|2) || (roundboxalign & (4|8))==(4|8)) ? 1 : 2;
        const int vnum= ((roundboxalign & (1|8))==(1|8) || (roundboxalign & (2|4))==(2|4)) ? 1 : 2;

        minsize= MIN2((rect->xmax-rect->xmin)*hnum, (rect->ymax-rect->ymin)*vnum);
        
        if(2.0f*rad > minsize)
                rad= 0.5f*minsize;

        if(2.0f*(radi+1.0f) > minsize)
                radi= 0.5f*minsize - 1.0f;
        
        /* mult */
        for(a=0; a<9; a++) {
                veci[a][0]= radi*cornervec[a][0]; 
                veci[a][1]= radi*cornervec[a][1]; 
                vec[a][0]= rad*cornervec[a][0]; 
                vec[a][1]= rad*cornervec[a][1]; 
        }
        
        /* corner left-bottom */
        if(roundboxalign & 8) {
                
                for(a=0; a<9; a++, tot++) {
                        wt->inner_v[tot][0]= minxi+veci[a][1];
                        wt->inner_v[tot][1]= minyi+radi-veci[a][0];
                        
                        wt->outer_v[tot][0]= minx+vec[a][1];
                        wt->outer_v[tot][1]= miny+rad-vec[a][0];
                        
                        wt->inner_uv[tot][0]= facxi*(wt->inner_v[tot][0] - minxi);
                        wt->inner_uv[tot][1]= facyi*(wt->inner_v[tot][1] - minyi);
                }
        }
        else {
                wt->inner_v[tot][0]= minxi;
                wt->inner_v[tot][1]= minyi;
                
                wt->outer_v[tot][0]= minx;
                wt->outer_v[tot][1]= miny;

                wt->inner_uv[tot][0]= 0.0f;
                wt->inner_uv[tot][1]= 0.0f;
                
                tot++;
        }
        
        /* corner right-bottom */
        if(roundboxalign & 4) {
                
                for(a=0; a<9; a++, tot++) {
                        wt->inner_v[tot][0]= maxxi-radi+veci[a][0];
                        wt->inner_v[tot][1]= minyi+veci[a][1];
                        
                        wt->outer_v[tot][0]= maxx-rad+vec[a][0];
                        wt->outer_v[tot][1]= miny+vec[a][1];
                        
                        wt->inner_uv[tot][0]= facxi*(wt->inner_v[tot][0] - minxi);
                        wt->inner_uv[tot][1]= facyi*(wt->inner_v[tot][1] - minyi);
                }
        }
        else {
                wt->inner_v[tot][0]= maxxi;
                wt->inner_v[tot][1]= minyi;
                
                wt->outer_v[tot][0]= maxx;
                wt->outer_v[tot][1]= miny;

                wt->inner_uv[tot][0]= 1.0f;
                wt->inner_uv[tot][1]= 0.0f;
                
                tot++;
        }
        
        wt->halfwayvert= tot;
        
        /* corner right-top */
        if(roundboxalign & 2) {
                
                for(a=0; a<9; a++, tot++) {
                        wt->inner_v[tot][0]= maxxi-veci[a][1];
                        wt->inner_v[tot][1]= maxyi-radi+veci[a][0];
                        
                        wt->outer_v[tot][0]= maxx-vec[a][1];
                        wt->outer_v[tot][1]= maxy-rad+vec[a][0];
                        
                        wt->inner_uv[tot][0]= facxi*(wt->inner_v[tot][0] - minxi);
                        wt->inner_uv[tot][1]= facyi*(wt->inner_v[tot][1] - minyi);
                }
        }
        else {
                wt->inner_v[tot][0]= maxxi;
                wt->inner_v[tot][1]= maxyi;
                
                wt->outer_v[tot][0]= maxx;
                wt->outer_v[tot][1]= maxy;
                
                wt->inner_uv[tot][0]= 1.0f;
                wt->inner_uv[tot][1]= 1.0f;
                
                tot++;
        }
        
        /* corner left-top */
        if(roundboxalign & 1) {
                
                for(a=0; a<9; a++, tot++) {
                        wt->inner_v[tot][0]= minxi+radi-veci[a][0];
                        wt->inner_v[tot][1]= maxyi-veci[a][1];
                        
                        wt->outer_v[tot][0]= minx+rad-vec[a][0];
                        wt->outer_v[tot][1]= maxy-vec[a][1];
                        
                        wt->inner_uv[tot][0]= facxi*(wt->inner_v[tot][0] - minxi);
                        wt->inner_uv[tot][1]= facyi*(wt->inner_v[tot][1] - minyi);
                }
                
        }
        else {
                
                wt->inner_v[tot][0]= minxi;
                wt->inner_v[tot][1]= maxyi;
                
                wt->outer_v[tot][0]= minx;
                wt->outer_v[tot][1]= maxy;
                
                wt->inner_uv[tot][0]= 0.0f;
                wt->inner_uv[tot][1]= 1.0f;
                
                tot++;
        }
                
        wt->totvert= tot;
}

static void round_box_edges(uiWidgetBase *wt, int roundboxalign, rcti *rect, float rad)
{
        round_box__edges(wt, roundboxalign, rect, rad, rad-1.0f);
}


/* based on button rect, return scaled array of triangles */
static void widget_num_tria(uiWidgetTrias *tria, rcti *rect, float triasize, char where)
{
        float centx, centy, sizex, sizey, minsize;
        int a, i1=0, i2=1;
        
        minsize= MIN2(rect->xmax-rect->xmin, rect->ymax-rect->ymin);
        
        /* center position and size */
        centx= (float)rect->xmin + 0.5f*minsize;
        centy= (float)rect->ymin + 0.5f*minsize;
        sizex= sizey= -0.5f*triasize*minsize;

        if(where=='r') {
                centx= (float)rect->xmax - 0.5f*minsize;
                sizex= -sizex;
        }       
        else if(where=='t') {
                centy= (float)rect->ymax - 0.5f*minsize;
                sizey= -sizey;
                i2=0; i1= 1;
        }       
        else if(where=='b') {
                sizex= -sizex;
                i2=0; i1= 1;
        }       
        
        for(a=0; a<3; a++) {
                tria->vec[a][0]= sizex*num_tria_vert[a][i1] + centx;
                tria->vec[a][1]= sizey*num_tria_vert[a][i2] + centy;
        }
        
        tria->tot= 1;
        tria->index= num_tria_face;
}

static void widget_scroll_circle(uiWidgetTrias *tria, rcti *rect, float triasize, char where)
{
        float centx, centy, sizex, sizey, minsize;
        int a, i1=0, i2=1;
        
        minsize= MIN2(rect->xmax-rect->xmin, rect->ymax-rect->ymin);
        
        /* center position and size */
        centx= (float)rect->xmin + 0.5f*minsize;
        centy= (float)rect->ymin + 0.5f*minsize;
        sizex= sizey= -0.5f*triasize*minsize;

        if(where=='r') {
                centx= (float)rect->xmax - 0.5f*minsize;
                sizex= -sizex;
        }       
        else if(where=='t') {
                centy= (float)rect->ymax - 0.5f*minsize;
                sizey= -sizey;
                i2=0; i1= 1;
        }       
        else if(where=='b') {
                sizex= -sizex;
                i2=0; i1= 1;
        }       
        
        for(a=0; a<16; a++) {
                tria->vec[a][0]= sizex*scroll_circle_vert[a][i1] + centx;
                tria->vec[a][1]= sizey*scroll_circle_vert[a][i2] + centy;
        }
        
        tria->tot= 14;
        tria->index= scroll_circle_face;
}

static void widget_trias_draw(uiWidgetTrias *tria)
{
        int a;
        
        glBegin(GL_TRIANGLES);
        for(a=0; a<tria->tot; a++) {
                glVertex2fv(tria->vec[ tria->index[a][0] ]);
                glVertex2fv(tria->vec[ tria->index[a][1] ]);
                glVertex2fv(tria->vec[ tria->index[a][2] ]);
        }
        glEnd();
        
}

static void widget_menu_trias(uiWidgetTrias *tria, rcti *rect)
{
        float centx, centy, size, asp;
        int a;
                
        /* center position and size */
        centx= rect->xmax - 0.5f*(rect->ymax-rect->ymin);
        centy= rect->ymin + 0.5f*(rect->ymax-rect->ymin);
        size= 0.4f*(rect->ymax-rect->ymin);
        
        /* XXX exception */
        asp= ((float)rect->xmax-rect->xmin)/((float)rect->ymax-rect->ymin);
        if(asp > 1.2f && asp < 2.6f)
                centx= rect->xmax - 0.3f*(rect->ymax-rect->ymin);
        
        for(a=0; a<6; a++) {
                tria->vec[a][0]= size*menu_tria_vert[a][0] + centx;
                tria->vec[a][1]= size*menu_tria_vert[a][1] + centy;
        }

        tria->tot= 2;
        tria->index= menu_tria_face;
}

static void widget_check_trias(uiWidgetTrias *tria, rcti *rect)
{
        float centx, centy, size;
        int a;
        
        /* center position and size */
        centx= rect->xmin + 0.5f*(rect->ymax-rect->ymin);
        centy= rect->ymin + 0.5f*(rect->ymax-rect->ymin);
        size= 0.5f*(rect->ymax-rect->ymin);
        
        for(a=0; a<6; a++) {
                tria->vec[a][0]= size*check_tria_vert[a][0] + centx;
                tria->vec[a][1]= size*check_tria_vert[a][1] + centy;
        }
        
        tria->tot= 4;
        tria->index= check_tria_face;
}


/* prepares shade colors */
static void shadecolors4(char *coltop, char *coldown, const char *color, short shadetop, short shadedown)
{
        
        coltop[0]= CLAMPIS(color[0]+shadetop, 0, 255);
        coltop[1]= CLAMPIS(color[1]+shadetop, 0, 255);
        coltop[2]= CLAMPIS(color[2]+shadetop, 0, 255);
        coltop[3]= color[3];

        coldown[0]= CLAMPIS(color[0]+shadedown, 0, 255);
        coldown[1]= CLAMPIS(color[1]+shadedown, 0, 255);
        coldown[2]= CLAMPIS(color[2]+shadedown, 0, 255);
        coldown[3]= color[3];   
}

static void round_box_shade_col4(const char col1[4], const char col2[4], const float fac)
{
        unsigned char col[4];
        const int faci= FTOCHAR(fac);
        const int facm= 255-faci;

        col[0]= (faci*col1[0] + facm*col2[0])>>8;
        col[1]= (faci*col1[1] + facm*col2[1])>>8;
        col[2]= (faci*col1[2] + facm*col2[2])>>8;
        col[3]= (faci*col1[3] + facm*col2[3])>>8;

        glColor4ubv(col);
}

static void widgetbase_outline(uiWidgetBase *wtb)
{
        int a;
        
        /* outline */
        glBegin(GL_QUAD_STRIP);
        for(a=0; a<wtb->totvert; a++) {
                glVertex2fv(wtb->outer_v[a]);
                glVertex2fv(wtb->inner_v[a]);
        }
        glVertex2fv(wtb->outer_v[0]);
        glVertex2fv(wtb->inner_v[0]);
        glEnd();
}

static void widgetbase_draw(uiWidgetBase *wtb, uiWidgetColors *wcol)
{
        int j, a;
        
        glEnable(GL_BLEND);

        /* backdrop non AA */
        if(wtb->inner) {
                if(wcol->shaded==0) {
                        if (wcol->alpha_check) {
                                float x_mid= 0.0f; /* used for dumb clamping of values */

                                /* dark checkers */
                                glColor4ub(UI_TRANSP_DARK, UI_TRANSP_DARK, UI_TRANSP_DARK, 255);
                                glBegin(GL_POLYGON);
                                for(a=0; a<wtb->totvert; a++) {
                                        glVertex2fv(wtb->inner_v[a]);
                                }
                                glEnd();

                                /* light checkers */
                                glEnable(GL_POLYGON_STIPPLE);
                                glColor4ub(UI_TRANSP_LIGHT, UI_TRANSP_LIGHT, UI_TRANSP_LIGHT, 255);
                                glPolygonStipple(checker_stipple_sml);
                                glBegin(GL_POLYGON);
                                for(a=0; a<wtb->totvert; a++) {
                                        glVertex2fv(wtb->inner_v[a]);
                                }
                                glEnd();
                                glDisable(GL_POLYGON_STIPPLE);

                                /* alpha fill */
                                glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

                                glColor4ubv((unsigned char*)wcol->inner);
                                glBegin(GL_POLYGON);
                                for(a=0; a<wtb->totvert; a++) {
                                        glVertex2fv(wtb->inner_v[a]);
                                        x_mid += wtb->inner_v[a][0];
                                }
                                x_mid /= wtb->totvert;
                                glEnd();

                                /* 1/2 solid color */
                                glColor4ub(wcol->inner[0], wcol->inner[1], wcol->inner[2], 255);
                                glBegin(GL_POLYGON);
                                for(a=0; a<wtb->totvert; a++)
                                        glVertex2f(MIN2(wtb->inner_v[a][0], x_mid), wtb->inner_v[a][1]);
                                glEnd();
                        }
                        else {
                                /* simple fill */
                                glColor4ubv((unsigned char*)wcol->inner);
                                glBegin(GL_POLYGON);
                                for(a=0; a<wtb->totvert; a++)
                                        glVertex2fv(wtb->inner_v[a]);
                                glEnd();
                        }
                }
                else {
                        char col1[4], col2[4];
                        
                        shadecolors4(col1, col2, wcol->inner, wcol->shadetop, wcol->shadedown);
                        
                        glShadeModel(GL_SMOOTH);
                        glBegin(GL_POLYGON);
                        for(a=0; a<wtb->totvert; a++) {
                                round_box_shade_col4(col1, col2, wtb->inner_uv[a][wtb->shadedir]);
                                glVertex2fv(wtb->inner_v[a]);
                        }
                        glEnd();
                        glShadeModel(GL_FLAT);
                }
        }
        
        /* for each AA step */
        if(wtb->outline) {
                for(j=0; j<8; j++) {
                        glTranslatef(1.0f * jit[j][0], 1.0f * jit[j][1], 0.0f);
                        
                        /* outline */
                        glColor4ub(wcol->outline[0], wcol->outline[1], wcol->outline[2], 32);
                        glBegin(GL_QUAD_STRIP);
                        for(a=0; a<wtb->totvert; a++) {
                                glVertex2fv(wtb->outer_v[a]);
                                glVertex2fv(wtb->inner_v[a]);
                        }
                        glVertex2fv(wtb->outer_v[0]);
                        glVertex2fv(wtb->inner_v[0]);
                        glEnd();
                
                        /* emboss bottom shadow */
                        if(wtb->emboss) {
                                glColor4f(1.0f, 1.0f, 1.0f, 0.02f);
                                glBegin(GL_QUAD_STRIP);
                                for(a=0; a<wtb->halfwayvert; a++) {
                                        glVertex2fv(wtb->outer_v[a]);
                                        glVertex2f(wtb->outer_v[a][0], wtb->outer_v[a][1]-1.0f);
                                }
                                glEnd();
                        }
                        
                        glTranslatef(-1.0f * jit[j][0], -1.0f * jit[j][1], 0.0f);
                }
        }
        
        /* decoration */
        if(wtb->tria1.tot || wtb->tria2.tot) {
                /* for each AA step */
                for(j=0; j<8; j++) {
                        glTranslatef(1.0f * jit[j][0], 1.0f * jit[j][1], 0.0f);

                        if(wtb->tria1.tot) {
                                glColor4ub(wcol->item[0], wcol->item[1], wcol->item[2], 32);
                                widget_trias_draw(&wtb->tria1);
                        }
                        if(wtb->tria2.tot) {
                                glColor4ub(wcol->item[0], wcol->item[1], wcol->item[2], 32);
                                widget_trias_draw(&wtb->tria2);
                        }
                
                        glTranslatef(-1.0f * jit[j][0], -1.0f * jit[j][1], 0.0f);
                }
        }

        glDisable(GL_BLEND);
        
}

/* *********************** text/icon ************************************** */

#define PREVIEW_PAD     4

static void widget_draw_preview(BIFIconID icon, float UNUSED(alpha), rcti *rect)
{
        int w, h, size;

        if(icon==ICON_NONE)
                return;

        w = rect->xmax - rect->xmin;
        h = rect->ymax - rect->ymin;
        size = MIN2(w, h);
        size -= PREVIEW_PAD*2;  /* padding */

        if(size > 0) {
                int x = rect->xmin + w/2 - size/2;
                int y = rect->ymin + h/2 - size/2;

                UI_icon_draw_preview_aspect_size(x, y, icon, 1.0f, size);
        }
}


/* icons have been standardized... and this call draws in untransformed coordinates */

static void widget_draw_icon(uiBut *but, BIFIconID icon, float alpha, rcti *rect)
{
        int xs=0, ys=0;
        float aspect, height;
        
        if (but->flag & UI_ICON_PREVIEW) {
                widget_draw_preview(icon, alpha, rect);
                return;
        }
        
        /* this icon doesn't need draw... */
        if(icon==ICON_BLANK1 && (but->flag & UI_ICON_SUBMENU)==0) return;
        
        /* we need aspect from block, for menus... these buttons are scaled in uiPositionBlock() */
        aspect= but->block->aspect;
        if(aspect != but->aspect) {
                /* prevent scaling up icon in pupmenu */
                if (aspect < 1.0f) {                    
                        height= UI_DPI_ICON_SIZE;
                        aspect = 1.0f;
                        
                }
                else 
                        height= UI_DPI_ICON_SIZE/aspect;
        }
        else
                height= UI_DPI_ICON_SIZE;
        
        /* calculate blend color */
        if ELEM4(but->type, TOG, ROW, TOGN, LISTROW) {
                if(but->flag & UI_SELECT);
                else if(but->flag & UI_ACTIVE);
                else alpha= 0.5f;
        }
        
        /* extra feature allows more alpha blending */
        if(but->type==LABEL && but->a1==1.0f) alpha *= but->a2;
        
        glEnable(GL_BLEND);
        
        if(icon && icon!=ICON_BLANK1) {
                if(but->flag & UI_ICON_LEFT) {
                        if (but->type==BUT_TOGDUAL) {
                                if (but->drawstr[0]) {
                                        xs= rect->xmin-1;
                                } else {
                                        xs= (rect->xmin+rect->xmax- height)/2;
                                }
                        }
                        else if (but->block->flag & UI_BLOCK_LOOP) {
                                if(but->type==SEARCH_MENU)
                                        xs= rect->xmin+4;
                                else
                                        xs= rect->xmin+1;
                        }
                        else if ((but->type==ICONROW) || (but->type==ICONTEXTROW)) {
                                xs= rect->xmin+3;
                        }
                        else {
                                xs= rect->xmin+4;
                        }
                        ys= (rect->ymin+rect->ymax- height)/2;
                }
                else {
                        xs= (rect->xmin+rect->xmax- height)/2;
                        ys= (rect->ymin+rect->ymax- height)/2;
                }
                
                /* to indicate draggable */
                if(but->dragpoin && (but->flag & UI_ACTIVE)) {
                        float rgb[3]= {1.25f, 1.25f, 1.25f};
                        UI_icon_draw_aspect_color(xs, ys, icon, aspect, rgb);
                }
                else
                        UI_icon_draw_aspect(xs, ys, icon, aspect, alpha);
        }
        
        if(but->flag & UI_ICON_SUBMENU) {
                xs= rect->xmax-17;
                ys= (rect->ymin+rect->ymax- height)/2;
                
                UI_icon_draw_aspect(xs, ys, ICON_RIGHTARROW_THIN, aspect, alpha);
        }
        
        glDisable(GL_BLEND);
}

/* sets but->ofs to make sure text is correctly visible */
static void ui_text_leftclip(uiFontStyle *fstyle, uiBut *but, rcti *rect)
{
        int border= (but->flag & UI_BUT_ALIGN_RIGHT)? 8: 10;
        int okwidth= rect->xmax-rect->xmin - border;
        
        if (but->flag & UI_HAS_ICON) okwidth -= UI_DPI_ICON_SIZE;
        
        /* need to set this first */
        uiStyleFontSet(fstyle);
        
        if (fstyle->kerning==1) /* for BLF_width */
                BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);

        /* if text editing we define ofs dynamically */
        if(but->editstr && but->pos >= 0) {
                if(but->ofs > but->pos)
                        but->ofs= but->pos;
        }
        else but->ofs= 0;
        
        but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr + but->ofs);
        
        while(but->strwidth > okwidth) {
                
                /* textbut exception, clip right when... */
                if(but->editstr && but->pos >= 0) {
                        float width;
                        char buf[UI_MAX_DRAW_STR];
                        
                        /* copy draw string */
                        BLI_strncpy(buf, but->drawstr, sizeof(buf));
                        /* string position of cursor */
                        buf[but->pos]= 0;
                        width= BLF_width(fstyle->uifont_id, buf+but->ofs);
                        
                        /* if cursor is at 20 pixels of right side button we clip left */
                        if(width > okwidth-20)
                                but->ofs++;
                        else {
                                /* shift string to the left */
                                if(width < 20 && but->ofs > 0)
                                        but->ofs--;
                                but->drawstr[ strlen(but->drawstr)-1 ]= 0;
                        }
                }
                else
                        but->ofs++;

                but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                
                if(but->strwidth < 10) break;
        }
        
        if (fstyle->kerning==1)
                BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
}

static void ui_text_label_rightclip(uiFontStyle *fstyle, uiBut *but, rcti *rect)
{
        int border= (but->flag & UI_BUT_ALIGN_RIGHT)? 8: 10;
        int okwidth= rect->xmax-rect->xmin - border;
        char *cpoin=NULL;
        char *cpend = but->drawstr + strlen(but->drawstr);
        
        /* need to set this first */
        uiStyleFontSet(fstyle);
        
        if (fstyle->kerning==1) /* for BLF_width */
                BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
        
        but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr);
        but->ofs= 0;
        
        /* find the space after ':' separator */
        cpoin= strrchr(but->drawstr, ':');
        
        if (cpoin && (cpoin < cpend-2)) {
                char *cp2 = cpoin;
                
                /* chop off the leading text, starting from the right */
                while (but->strwidth > okwidth && cp2 > but->drawstr) {
                        /* shift the text after and including cp2 back by 1 char, +1 to include null terminator */
                        memmove(cp2-1, cp2, strlen(cp2)+1);
                        cp2--;
                        
                        but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                        if(but->strwidth < 10) break;
                }
        
        
                /* after the leading text is gone, chop off the : and following space, with ofs */
                while ((but->strwidth > okwidth) && (but->ofs < 2))
                {
                        but->ofs++;
                        but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                        if(but->strwidth < 10) break;
                }
                
        }

        /* once the label's gone, chop off the least significant digits */
        while(but->strwidth > okwidth ) {
                int pos= strlen(but->drawstr);
                
                but->drawstr[ pos-1 ] = 0;
                pos--;
                
                but->strwidth= BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                if(but->strwidth < 10) break;
        }
        
        if (fstyle->kerning==1)
                BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
}


static void widget_draw_text(uiFontStyle *fstyle, uiWidgetColors *wcol, uiBut *but, rcti *rect)
{
//      int transopts;
        char *cpoin = NULL;
        
        /* for underline drawing */
        float font_xofs, font_yofs;

        uiStyleFontSet(fstyle);
        
        if(but->editstr || (but->flag & UI_TEXT_LEFT))
                fstyle->align= UI_STYLE_TEXT_LEFT;
        else
                fstyle->align= UI_STYLE_TEXT_CENTER;                    
        
        if (fstyle->kerning==1) /* for BLF_width */
                BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
        
        /* text button selection and cursor */
        if(but->editstr && but->pos != -1) {
                short t=0, pos=0, ch;
                short selsta_tmp, selend_tmp, selsta_draw, selwidth_draw;

                if ((but->selend - but->selsta) > 0) {
                        /* text button selection */
                        selsta_tmp = but->selsta;
                        selend_tmp = but->selend;
                        
                        if(but->drawstr[0]!=0) {

                                if (but->selsta >= but->ofs) {
                                        ch= but->drawstr[selsta_tmp];
                                        but->drawstr[selsta_tmp]= 0;
                                        
                                        selsta_draw = BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                                        
                                        but->drawstr[selsta_tmp]= ch;
                                } else
                                        selsta_draw = 0;
                                
                                ch= but->drawstr[selend_tmp];
                                but->drawstr[selend_tmp]= 0;
                                
                                selwidth_draw = BLF_width(fstyle->uifont_id, but->drawstr+but->ofs);
                                
                                but->drawstr[selend_tmp]= ch;

                                glColor3ubv((unsigned char*)wcol->item);
                                glRects(rect->xmin+selsta_draw, rect->ymin+2, rect->xmin+selwidth_draw, rect->ymax-2);
                        }
                } else {
                        /* text cursor */
                        pos= but->pos;
                        if(pos >= but->ofs) {
                                if(but->drawstr[0]!=0) {
                                        ch= but->drawstr[pos];
                                        but->drawstr[pos]= 0;
                                        
                                        t= BLF_width(fstyle->uifont_id, but->drawstr+but->ofs) / but->aspect;
                                        
                                        but->drawstr[pos]= ch;
                                }

                                glColor3f(0.20, 0.6, 0.9);
                                glRects(rect->xmin+t, rect->ymin+2, rect->xmin+t+2, rect->ymax-2);
                        }
                }
        }
        
        if (fstyle->kerning == 1)
                BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
        
        //      ui_rasterpos_safe(x, y, but->aspect);
//      if(but->type==IDPOIN) transopts= 0;     // no translation, of course!
//      else transopts= ui_translate_buttons();
        
        /* cut string in 2 parts - only for menu entries */
        if((but->block->flag & UI_BLOCK_LOOP)) {
                if(ELEM5(but->type, SLI, NUM, TEX, NUMSLI, NUMABS)==0) {
                        cpoin= strchr(but->drawstr, '|');
                        if(cpoin) *cpoin= 0;            
                }
        }
        
        glColor3ubv((unsigned char*)wcol->text);

        uiStyleFontDrawExt(fstyle, rect, but->drawstr+but->ofs, &font_xofs, &font_yofs);

        if(but->menu_key != '\0') {
                char fixedbuf[128];
                char *str;

                BLI_strncpy(fixedbuf, but->drawstr + but->ofs, sizeof(fixedbuf));

                str= strchr(fixedbuf, but->menu_key-32); /* upper case */
                if(str==NULL)
                        str= strchr(fixedbuf, but->menu_key);

                if(str) {
                        int ul_index= -1;
                        float ul_advance;

                        ul_index= (int)(str - fixedbuf);

                        if (fstyle->kerning == 1) {
                                BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
                        }

                        fixedbuf[ul_index]= '\0';
                        ul_advance= BLF_width(fstyle->uifont_id, fixedbuf);

                        BLF_position(fstyle->uifont_id, rect->xmin+font_xofs + ul_advance, rect->ymin+font_yofs, 0.0f);
                        BLF_draw(fstyle->uifont_id, "_", 2);

                        if (fstyle->kerning == 1) {
                                BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
                        }
                }
        }

        /* part text right aligned */
        if(cpoin) {
                fstyle->align= UI_STYLE_TEXT_RIGHT;
                rect->xmax-=5;
                uiStyleFontDraw(fstyle, rect, cpoin+1);
                *cpoin= '|';
        }
}

/* draws text and icons for buttons */
static void widget_draw_text_icon(uiFontStyle *fstyle, uiWidgetColors *wcol, uiBut *but, rcti *rect)
{
        
        if(but==NULL) return;

        /* clip but->drawstr to fit in available space */
        if (but->editstr && but->pos >= 0) {
                ui_text_leftclip(fstyle, but, rect);
        }
        else if (ELEM4(but->type, NUM, NUMABS, NUMSLI, SLI)) {
                ui_text_label_rightclip(fstyle, but, rect);
        }
        else if (ELEM(but->type, TEX, SEARCH_MENU)) {
                ui_text_leftclip(fstyle, but, rect);
        }
        else if ((but->block->flag & UI_BLOCK_LOOP) && (but->type == BUT)) {
                ui_text_leftclip(fstyle, but, rect);
        }
        else but->ofs= 0;
        
        /* check for button text label */
        if (but->type == ICONTEXTROW) {
                widget_draw_icon(but, (BIFIconID) (but->icon+but->iconadd), 1.0f, rect);
        }
        else {
                                
                if(but->type==BUT_TOGDUAL) {
                        int dualset= 0;
                        if(but->pointype==SHO)
                                dualset= BTST( *(((short *)but->poin)+1), but->bitnr);
                        else if(but->pointype==INT)
                                dualset= BTST( *(((int *)but->poin)+1), but->bitnr);
                        
                        widget_draw_icon(but, ICON_DOT, dualset?1.0f:0.25f, rect);
                }
                
                /* If there's an icon too (made with uiDefIconTextBut) then draw the icon
                and offset the text label to accommodate it */
                
                if (but->flag & UI_HAS_ICON) {
                        widget_draw_icon(but, but->icon+but->iconadd, 1.0f, rect);
                        
                        rect->xmin += (int)((float)UI_icon_get_width(but->icon+but->iconadd) * UI_DPI_ICON_FAC);
                        
                        if(but->editstr || (but->flag & UI_TEXT_LEFT)) 
                                rect->xmin += 5;
                }
                else if((but->flag & UI_TEXT_LEFT)) 
                        rect->xmin += 5;
                
                /* always draw text for textbutton cursor */
                widget_draw_text(fstyle, wcol, but, rect);

        }
}



/* *********************** widget types ************************************* */


/*   uiWidgetStateColors
        char inner_anim[4];
        char inner_anim_sel[4];
        char inner_key[4];
        char inner_key_sel[4];
        char inner_driven[4];
        char inner_driven_sel[4];
        float blend;
 
*/

static struct uiWidgetStateColors wcol_state_colors= {
        {115, 190, 76, 255},
        {90, 166, 51, 255},
        {240, 235, 100, 255},
        {215, 211, 75, 255},
        {180, 0, 255, 255},
        {153, 0, 230, 255},
        0.5f, 0.0f
};

/*  uiWidgetColors
        float outline[3];
        float inner[4];
        float inner_sel[4];
        float item[3];
        float text[3];
        float text_sel[3];

        short shaded;
        float shadetop, shadedown;
*/      

static struct uiWidgetColors wcol_num= {
        {25, 25, 25, 255},
        {180, 180, 180, 255},
        {153, 153, 153, 255},
        {90, 90, 90, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        -20, 0
};

static struct uiWidgetColors wcol_numslider= {
        {25, 25, 25, 255},
        {180, 180, 180, 255},
        {153, 153, 153, 255},
        {128, 128, 128, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        -20, 0
};

static struct uiWidgetColors wcol_text= {
        {25, 25, 25, 255},
        {153, 153, 153, 255},
        {153, 153, 153, 255},
        {90, 90, 90, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        0, 25
};

static struct uiWidgetColors wcol_option= {
        {0, 0, 0, 255},
        {70, 70, 70, 255},
        {70, 70, 70, 255},
        {255, 255, 255, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        15, -15
};

/* button that shows popup */
static struct uiWidgetColors wcol_menu= {
        {0, 0, 0, 255},
        {70, 70, 70, 255},
        {70, 70, 70, 255},
        {255, 255, 255, 255},
        
        {255, 255, 255, 255},
        {204, 204, 204, 255},
        
        1,
        15, -15
};

/* button that starts pulldown */
static struct uiWidgetColors wcol_pulldown= {
        {0, 0, 0, 255},
        {63, 63, 63, 255},
        {86, 128, 194, 255},
        {255, 255, 255, 255},
        
        {0, 0, 0, 255},
        {0, 0, 0, 255},
        
        0,
        25, -20
};

/* button inside menu */
static struct uiWidgetColors wcol_menu_item= {
        {0, 0, 0, 255},
        {0, 0, 0, 0},
        {86, 128, 194, 255},
        {255, 255, 255, 255},
        
        {255, 255, 255, 255},
        {0, 0, 0, 255},
        
        1,
        38, 0
};

/* backdrop menu + title text color */
static struct uiWidgetColors wcol_menu_back= {
        {0, 0, 0, 255},
        {25, 25, 25, 230},
        {45, 45, 45, 230},
        {100, 100, 100, 255},
        
        {160, 160, 160, 255},
        {255, 255, 255, 255},
        
        0,
        25, -20
};


static struct uiWidgetColors wcol_radio= {
        {0, 0, 0, 255},
        {70, 70, 70, 255},
        {86, 128, 194, 255},
        {255, 255, 255, 255},
        
        {255, 255, 255, 255},
        {0, 0, 0, 255},
        
        1,
        15, -15
};

static struct uiWidgetColors wcol_regular= {
        {25, 25, 25, 255},
        {153, 153, 153, 255},
        {100, 100, 100, 255},
        {25, 25, 25, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        0,
        0, 0
};

static struct uiWidgetColors wcol_tool= {
        {25, 25, 25, 255},
        {153, 153, 153, 255},
        {100, 100, 100, 255},
        {25, 25, 25, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        15, -15
};

static struct uiWidgetColors wcol_box= {
        {25, 25, 25, 255},
        {128, 128, 128, 255},
        {100, 100, 100, 255},
        {25, 25, 25, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        0,
        0, 0
};

static struct uiWidgetColors wcol_toggle= {
        {25, 25, 25, 255},
        {153, 153, 153, 255},
        {100, 100, 100, 255},
        {25, 25, 25, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        0,
        0, 0
};

static struct uiWidgetColors wcol_scroll= {
        {50, 50, 50, 180},
        {80, 80, 80, 180},
        {100, 100, 100, 180},
        {128, 128, 128, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        1,
        5, -5
};

static struct uiWidgetColors wcol_progress= {
        {0, 0, 0, 255},
        {190, 190, 190, 255},
        {100, 100, 100, 180},
        {68, 68, 68, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        0,
        0, 0
};

static struct uiWidgetColors wcol_list_item= {
        {0, 0, 0, 255},
        {0, 0, 0, 0},
        {86, 128, 194, 255},
        {0, 0, 0, 255},
        
        {0, 0, 0, 255},
        {0, 0, 0, 255},
        
        0,
        0, 0
};

/* free wcol struct to play with */
static struct uiWidgetColors wcol_tmp= {
        {0, 0, 0, 255},
        {128, 128, 128, 255},
        {100, 100, 100, 255},
        {25, 25, 25, 255},
        
        {0, 0, 0, 255},
        {255, 255, 255, 255},
        
        0,
        0, 0
};


/* called for theme init (new theme) and versions */
void ui_widget_color_init(ThemeUI *tui)
{
        tui->wcol_regular= wcol_regular;
        tui->wcol_tool= wcol_tool;
        tui->wcol_text= wcol_text;
        tui->wcol_radio= wcol_radio;
        tui->wcol_option= wcol_option;
        tui->wcol_toggle= wcol_toggle;
        tui->wcol_num= wcol_num;
        tui->wcol_numslider= wcol_numslider;
        tui->wcol_menu= wcol_menu;
        tui->wcol_pulldown= wcol_pulldown;
        tui->wcol_menu_back= wcol_menu_back;
        tui->wcol_menu_item= wcol_menu_item;
        tui->wcol_box= wcol_box;
        tui->wcol_scroll= wcol_scroll;
        tui->wcol_list_item= wcol_list_item;
        tui->wcol_progress= wcol_progress;

        tui->wcol_state= wcol_state_colors;
}

/* ************ button callbacks, state ***************** */

static void widget_state_blend(char *cp, const char *cpstate, const float fac)
{
        if(fac != 0.0f) {
                cp[0]= (int)((1.0f-fac)*cp[0] + fac*cpstate[0]);
                cp[1]= (int)((1.0f-fac)*cp[1] + fac*cpstate[1]);
                cp[2]= (int)((1.0f-fac)*cp[2] + fac*cpstate[2]);
        }
}

/* copy colors from theme, and set changes in it based on state */
static void widget_state(uiWidgetType *wt, int state)
{
        uiWidgetStateColors *wcol_state= wt->wcol_state;

        wt->wcol= *(wt->wcol_theme);
        
        if(state & UI_SELECT) {
                QUATCOPY(wt->wcol.inner, wt->wcol.inner_sel)

                if(state & UI_BUT_ANIMATED_KEY)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_key_sel, wcol_state->blend);
                else if(state & UI_BUT_ANIMATED)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_anim_sel, wcol_state->blend);
                else if(state & UI_BUT_DRIVEN)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_driven_sel, wcol_state->blend);

                VECCOPY(wt->wcol.text, wt->wcol.text_sel);
                
                if(state & UI_SELECT)
                        SWAP(short, wt->wcol.shadetop, wt->wcol.shadedown);
        }
        else {
                if(state & UI_BUT_ANIMATED_KEY)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_key, wcol_state->blend);
                else if(state & UI_BUT_ANIMATED)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_anim, wcol_state->blend);
                else if(state & UI_BUT_DRIVEN)
                        widget_state_blend(wt->wcol.inner, wcol_state->inner_driven, wcol_state->blend);

                if(state & UI_ACTIVE) { /* mouse over? */
                        wt->wcol.inner[0]= wt->wcol.inner[0]>=240? 255 : wt->wcol.inner[0]+15;
                        wt->wcol.inner[1]= wt->wcol.inner[1]>=240? 255 : wt->wcol.inner[1]+15;
                        wt->wcol.inner[2]= wt->wcol.inner[2]>=240? 255 : wt->wcol.inner[2]+15;
                }
        }

        if(state & UI_BUT_REDALERT) {
                char red[4]= {255, 0, 0};
                widget_state_blend(wt->wcol.inner, red, 0.4f);
        }
}

/* sliders use special hack which sets 'item' as inner when drawing filling */
static void widget_state_numslider(uiWidgetType *wt, int state)
{
        uiWidgetStateColors *wcol_state= wt->wcol_state;
        float blend= wcol_state->blend - 0.2f; // XXX special tweak to make sure that bar will still be visible

        /* call this for option button */
        widget_state(wt, state);
        
        /* now, set the inner-part so that it reflects state settings too */
        // TODO: maybe we should have separate settings for the blending colors used for this case?
        if(state & UI_SELECT) {
                
                if(state & UI_BUT_ANIMATED_KEY)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_key_sel, blend);
                else if(state & UI_BUT_ANIMATED)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_anim_sel, blend);
                else if(state & UI_BUT_DRIVEN)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_driven_sel, blend);
                
                if(state & UI_SELECT)
                        SWAP(short, wt->wcol.shadetop, wt->wcol.shadedown);
        }
        else {
                if(state & UI_BUT_ANIMATED_KEY)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_key, blend);
                else if(state & UI_BUT_ANIMATED)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_anim, blend);
                else if(state & UI_BUT_DRIVEN)
                        widget_state_blend(wt->wcol.item, wcol_state->inner_driven, blend);
        }
}

/* labels use theme colors for text */
static void widget_state_label(uiWidgetType *wt, int state)
{
        /* call this for option button */
        widget_state(wt, state);

        if(state & UI_SELECT)
                UI_GetThemeColor4ubv(TH_TEXT_HI, (unsigned char *)wt->wcol.text);
        else
                UI_GetThemeColor4ubv(TH_TEXT, (unsigned char *)wt->wcol.text);
        
}

/* labels use theme colors for text */
static void widget_state_option_menu(uiWidgetType *wt, int state)
{
        
        /* call this for option button */
        widget_state(wt, state);
        
        /* if not selected we get theme from menu back */
        if(state & UI_SELECT)
                UI_GetThemeColor4ubv(TH_TEXT_HI, (unsigned char *)wt->wcol.text);
        else {
                bTheme *btheme= U.themes.first; /* XXX */

                VECCOPY(wt->wcol.text, btheme->tui.wcol_menu_back.text);
        }
}


static void widget_state_nothing(uiWidgetType *wt, int UNUSED(state))
{
        wt->wcol= *(wt->wcol_theme);
}       

/* special case, button that calls pulldown */
static void widget_state_pulldown(uiWidgetType *wt, int state)
{
        wt->wcol= *(wt->wcol_theme);
        
        QUATCOPY(wt->wcol.inner, wt->wcol.inner_sel);
        VECCOPY(wt->wcol.outline, wt->wcol.inner);

        if(state & UI_ACTIVE)
                VECCOPY(wt->wcol.text, wt->wcol.text_sel);
}

/* special case, menu items */
static void widget_state_menu_item(uiWidgetType *wt, int state)
{
        wt->wcol= *(wt->wcol_theme);
        
        if(state & (UI_BUT_DISABLED|UI_BUT_INACTIVE)) {
                wt->wcol.text[0]= 0.5f*(wt->wcol.text[0]+wt->wcol.text_sel[0]);
                wt->wcol.text[1]= 0.5f*(wt->wcol.text[1]+wt->wcol.text_sel[1]);
                wt->wcol.text[2]= 0.5f*(wt->wcol.text[2]+wt->wcol.text_sel[2]);
        }
        else if(state & UI_ACTIVE) {
                QUATCOPY(wt->wcol.inner, wt->wcol.inner_sel);
                VECCOPY(wt->wcol.text, wt->wcol.text_sel);
        }
}


/* ************ menu backdrop ************************* */

/* outside of rect, rad to left/bottom/right */
static void widget_softshadow(rcti *rect, int roundboxalign, float radin, float radout)
{
        uiWidgetBase wtb;
        rcti rect1= *rect;
        float alpha, alphastep;
        int step, tot, a;
        
        /* prevent tooltips to not show round shadow */
        if( 2.0f*radout > 0.2f*(rect1.ymax-rect1.ymin) )
                rect1.ymax -= 0.2f*(rect1.ymax-rect1.ymin);
        else
                rect1.ymax -= 2.0f*radout;
        
        /* inner part */
        tot= round_box_shadow_edges(wtb.inner_v, &rect1, radin, roundboxalign & 12, 0.0f);
        
        /* inverse linear shadow alpha */
        alpha= 0.15;
        alphastep= 0.67;
        
        for(step= 1; step<=radout; step++, alpha*=alphastep) {
                round_box_shadow_edges(wtb.outer_v, &rect1, radin, 15, (float)step);
                
                glColor4f(0.0f, 0.0f, 0.0f, alpha);
                
                glBegin(GL_QUAD_STRIP);
                for(a=0; a<tot; a++) {
                        glVertex2fv(wtb.outer_v[a]);
                        glVertex2fv(wtb.inner_v[a]);
                }
                glEnd();
        }
        
}

static void widget_menu_back(uiWidgetColors *wcol, rcti *rect, int flag, int direction)
{
        uiWidgetBase wtb;
        int roundboxalign= 15;
        
        widget_init(&wtb);
        
        /* menu is 2nd level or deeper */
        if (flag & UI_BLOCK_POPUP) {
                //rect->ymin -= 4.0;
                //rect->ymax += 4.0;
        }
        else if (direction == UI_DOWN) {
                roundboxalign= 12;
                rect->ymin -= 4.0;
        } 
        else if (direction == UI_TOP) {
                roundboxalign= 3;
                rect->ymax += 4.0;
        }
        
        glEnable(GL_BLEND);
        widget_softshadow(rect, roundboxalign, 5.0f, 8.0f);
        
        round_box_edges(&wtb, roundboxalign, rect, 5.0f);
        wtb.emboss= 0;
        widgetbase_draw(&wtb, wcol);
        
        glDisable(GL_BLEND);
}


static void ui_hsv_cursor(float x, float y)
{
        
        glPushMatrix();
        glTranslatef(x, y, 0.0f);
        
        glColor3f(1.0f, 1.0f, 1.0f);
        glutil_draw_filled_arc(0.0f, M_PI*2.0, 3.0f, 8);
        
        glEnable(GL_BLEND);
        glEnable(GL_LINE_SMOOTH );
        glColor3f(0.0f, 0.0f, 0.0f);
        glutil_draw_lined_arc(0.0f, M_PI*2.0, 3.0f, 12);
        glDisable(GL_BLEND);
        glDisable(GL_LINE_SMOOTH );
        
        glPopMatrix();
        
}

void ui_hsvcircle_vals_from_pos(float *valrad, float *valdist, rcti *rect, float mx, float my)
{
        /* duplication of code... well, simple is better now */
        float centx= (float)(rect->xmin + rect->xmax)/2;
        float centy= (float)(rect->ymin + rect->ymax)/2;
        float radius, dist;
        
        if( rect->xmax-rect->xmin > rect->ymax-rect->ymin )
                radius= (float)(rect->ymax - rect->ymin)/2; 
        else
                radius= (float)(rect->xmax - rect->xmin)/2; 

        mx-= centx;
        my-= centy;
        dist= sqrt( mx*mx + my*my);
        if(dist < radius)
                *valdist= dist/radius;
        else
                *valdist= 1.0f;
        
        *valrad= atan2f(mx, my)/(2.0f*(float)M_PI) + 0.5f;
}

static void ui_draw_but_HSVCIRCLE(uiBut *but, uiWidgetColors *wcol, rcti *rect)
{
        /* gouraud triangle fan */
        float radstep, ang= 0.0f;
        float centx, centy, radius;
        float rgb[3], hsvo[3], hsv[3], col[3], colcent[3];
        int a, tot= 32;
        int color_profile = but->block->color_profile;
        
        if (but->rnaprop && RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
                color_profile = BLI_PR_NONE;
        
        radstep= 2.0f*(float)M_PI/(float)tot;
        centx= (float)(rect->xmin + rect->xmax)/2;
        centy= (float)(rect->ymin + rect->ymax)/2;
        
        if( rect->xmax-rect->xmin > rect->ymax-rect->ymin )
                radius= (float)(rect->ymax - rect->ymin)/2; 
        else
                radius= (float)(rect->xmax - rect->xmin)/2; 
        
        /* color */
        ui_get_but_vectorf(but, rgb);
        copy_v3_v3(hsv, ui_block_hsv_get(but->block));
        rgb_to_hsv_compat(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
        copy_v3_v3(hsvo, hsv);
        
        /* exception: if 'lock' is set
         * lock the value of the color wheel to 1.
         * Useful for color correction tools where you're only interested in hue. */
        if (but->flag & UI_BUT_COLOR_LOCK)
                hsv[2] = 1.f;
        else if (color_profile)
                hsv[2] = linearrgb_to_srgb(hsv[2]);
        
        hsv_to_rgb(0.f, 0.f, hsv[2], colcent, colcent+1, colcent+2);
        
        glShadeModel(GL_SMOOTH);

        glBegin(GL_TRIANGLE_FAN);
        glColor3fv(colcent);
        glVertex2f( centx, centy);
        
        for(a=0; a<=tot; a++, ang+=radstep) {
                float si= sin(ang);
                float co= cos(ang);
                
                ui_hsvcircle_vals_from_pos(hsv, hsv+1, rect, centx + co*radius, centy + si*radius);
                CLAMP(hsv[2], 0.0f, 1.0f); /* for display only */

                hsv_to_rgb(hsv[0], hsv[1], hsv[2], col, col+1, col+2);
                glColor3fv(col);
                glVertex2f( centx + co*radius, centy + si*radius);
        }
        glEnd();
        
        glShadeModel(GL_FLAT);
        
        /* fully rounded outline */
        glPushMatrix();
        glTranslatef(centx, centy, 0.0f);
        glEnable(GL_BLEND);
        glEnable(GL_LINE_SMOOTH );
        glColor3ubv((unsigned char*)wcol->outline);
        glutil_draw_lined_arc(0.0f, M_PI*2.0, radius, tot + 1);
        glDisable(GL_BLEND);
        glDisable(GL_LINE_SMOOTH );
        glPopMatrix();

        /* cursor */
        ang= 2.0f*(float)M_PI*hsvo[0] + 0.5f*(float)M_PI;

        if(but->flag & UI_BUT_COLOR_CUBIC)
                radius= (1.0f - powf(1.0f - hsvo[1], 3.0f)) *radius;
        else
                radius= hsvo[1] * radius;

        ui_hsv_cursor(centx + cosf(-ang)*radius, centy + sinf(-ang)*radius);
        
}

/* ************ custom buttons, old stuff ************** */

/* draws in resolution of 20x4 colors */
void ui_draw_gradient(rcti *rect, float *hsv, int type, float alpha)
{
        int a;
        float h= hsv[0], s= hsv[1], v= hsv[2];
        float dx, dy, sx1, sx2, sy;
        float col0[4][3];       // left half, rect bottom to top
        float col1[4][3];       // right half, rect bottom to top

        /* draw series of gouraud rects */
        glShadeModel(GL_SMOOTH);
        
        switch(type) {
                case UI_GRAD_SV:
                        hsv_to_rgb(h, 0.0, 0.0,   &col1[0][0], &col1[0][1], &col1[0][2]);
                        hsv_to_rgb(h, 0.333, 0.0, &col1[1][0], &col1[1][1], &col1[1][2]);
                        hsv_to_rgb(h, 0.666, 0.0, &col1[2][0], &col1[2][1], &col1[2][2]);
                        hsv_to_rgb(h, 1.0, 0.0,   &col1[3][0], &col1[3][1], &col1[3][2]);
                        break;
                case UI_GRAD_HV:
                        hsv_to_rgb(0.0, s, 0.0,   &col1[0][0], &col1[0][1], &col1[0][2]);
                        hsv_to_rgb(0.0, s, 0.333, &col1[1][0], &col1[1][1], &col1[1][2]);
                        hsv_to_rgb(0.0, s, 0.666, &col1[2][0], &col1[2][1], &col1[2][2]);
                        hsv_to_rgb(0.0, s, 1.0,   &col1[3][0], &col1[3][1], &col1[3][2]);
                        break;
                case UI_GRAD_HS:
                        hsv_to_rgb(0.0, 0.0, v,   &col1[0][0], &col1[0][1], &col1[0][2]);
                        hsv_to_rgb(0.0, 0.333, v, &col1[1][0], &col1[1][1], &col1[1][2]);
                        hsv_to_rgb(0.0, 0.666, v, &col1[2][0], &col1[2][1], &col1[2][2]);
                        hsv_to_rgb(0.0, 1.0, v,   &col1[3][0], &col1[3][1], &col1[3][2]);
                        break;
                case UI_GRAD_H:
                        hsv_to_rgb(0.0, 1.0, 1.0,   &col1[0][0], &col1[0][1], &col1[0][2]);
                        VECCOPY(col1[1], col1[0]);
                        VECCOPY(col1[2], col1[0]);
                        VECCOPY(col1[3], col1[0]);
                        break;
                case UI_GRAD_S:
                        hsv_to_rgb(1.0, 0.0, 1.0,   &col1[1][0], &col1[1][1], &col1[1][2]);
                        VECCOPY(col1[0], col1[1]);
                        VECCOPY(col1[2], col1[1]);
                        VECCOPY(col1[3], col1[1]);
                        break;
                case UI_GRAD_V:
                        hsv_to_rgb(1.0, 1.0, 0.0,   &col1[2][0], &col1[2][1], &col1[2][2]);
                        VECCOPY(col1[0], col1[2]);
                        VECCOPY(col1[1], col1[2]);
                        VECCOPY(col1[3], col1[2]);
                        break;
                default:
                        assert(!"invalid 'type' argument");
                        hsv_to_rgb(1.0, 1.0, 1.0,   &col1[2][0], &col1[2][1], &col1[2][2]);
                        VECCOPY(col1[0], col1[2]);
                        VECCOPY(col1[1], col1[2]);
                        VECCOPY(col1[3], col1[2]);                      
        }
        
        /* old below */
        
        for(dx=0.0f; dx<1.0f; dx+= 0.05f) {
                // previous color
                VECCOPY(col0[0], col1[0]);
                VECCOPY(col0[1], col1[1]);
                VECCOPY(col0[2], col1[2]);
                VECCOPY(col0[3], col1[3]);
                
                // new color
                switch(type) {
                        case UI_GRAD_SV:
                                hsv_to_rgb(h, 0.0, dx,   &col1[0][0], &col1[0][1], &col1[0][2]);
                                hsv_to_rgb(h, 0.333, dx, &col1[1][0], &col1[1][1], &col1[1][2]);
                                hsv_to_rgb(h, 0.666, dx, &col1[2][0], &col1[2][1], &col1[2][2]);
                                hsv_to_rgb(h, 1.0, dx,   &col1[3][0], &col1[3][1], &col1[3][2]);
                                break;
                        case UI_GRAD_HV:
                                hsv_to_rgb(dx, s, 0.0,   &col1[0][0], &col1[0][1], &col1[0][2]);
                                hsv_to_rgb(dx, s, 0.333, &col1[1][0], &col1[1][1], &col1[1][2]);
                                hsv_to_rgb(dx, s, 0.666, &col1[2][0], &col1[2][1], &col1[2][2]);
                                hsv_to_rgb(dx, s, 1.0,   &col1[3][0], &col1[3][1], &col1[3][2]);
                                break;
                        case UI_GRAD_HS:
                                hsv_to_rgb(dx, 0.0, v,   &col1[0][0], &col1[0][1], &col1[0][2]);
                                hsv_to_rgb(dx, 0.333, v, &col1[1][0], &col1[1][1], &col1[1][2]);
                                hsv_to_rgb(dx, 0.666, v, &col1[2][0], &col1[2][1], &col1[2][2]);
                                hsv_to_rgb(dx, 1.0, v,   &col1[3][0], &col1[3][1], &col1[3][2]);
                                break;
                        case UI_GRAD_H:
                                hsv_to_rgb(dx, 1.0, 1.0,   &col1[0][0], &col1[0][1], &col1[0][2]);
                                VECCOPY(col1[1], col1[0]);
                                VECCOPY(col1[2], col1[0]);
                                VECCOPY(col1[3], col1[0]);
                                break;
                        case UI_GRAD_S:
                                hsv_to_rgb(h, dx, 1.0,   &col1[1][0], &col1[1][1], &col1[1][2]);
                                VECCOPY(col1[0], col1[1]);
                                VECCOPY(col1[2], col1[1]);
                                VECCOPY(col1[3], col1[1]);
                                break;
                        case UI_GRAD_V:
                                hsv_to_rgb(h, 1.0, dx,   &col1[2][0], &col1[2][1], &col1[2][2]);
                                VECCOPY(col1[0], col1[2]);
                                VECCOPY(col1[1], col1[2]);
                                VECCOPY(col1[3], col1[2]);
                                break;
                }
                
                // rect
                sx1= rect->xmin + dx*(rect->xmax-rect->xmin);
                sx2= rect->xmin + (dx+0.05f)*(rect->xmax-rect->xmin);
                sy= rect->ymin;
                dy= (rect->ymax-rect->ymin)/3.0;
                
                glBegin(GL_QUADS);
                for(a=0; a<3; a++, sy+=dy) {
                        glColor4f(col0[a][0], col0[a][1], col0[a][2], alpha);
                        glVertex2f(sx1, sy);
                        
                        glColor4f(col1[a][0], col1[a][1], col1[a][2], alpha);
                        glVertex2f(sx2, sy);

                        glColor4f(col1[a+1][0], col1[a+1][1], col1[a+1][2], alpha);
                        glVertex2f(sx2, sy+dy);
                        
                        glColor4f(col0[a+1][0], col0[a+1][1], col0[a+1][2], alpha);
                        glVertex2f(sx1, sy+dy);
                }
                glEnd();
        }
        
        glShadeModel(GL_FLAT);
        
}



static void ui_draw_but_HSVCUBE(uiBut *but, rcti *rect)
{
        float rgb[3], h,s,v;
        float x=0.0f, y=0.0f;
        float *hsv= ui_block_hsv_get(but->block);
        float hsvn[3];
        
        h= hsv[0];
        s= hsv[1];
        v= hsv[2];
        
        ui_get_but_vectorf(but, rgb);
        rgb_to_hsv_compat(rgb[0], rgb[1], rgb[2], &h, &s, &v);

        hsvn[0]= h;
        hsvn[1]= s;
        hsvn[2]= v;
        
        ui_draw_gradient(rect, hsvn, but->a1, 1.f);
        
        switch((int)but->a1) {
                case UI_GRAD_SV:
                        x= v; y= s; break;
                case UI_GRAD_HV:
                        x= h; y= v; break;
                case UI_GRAD_HS:
                        x= h; y= s; break;
                case UI_GRAD_H:
                        x= h; y= 0.5; break;
                case UI_GRAD_S:
                        x= s; y= 0.5; break;
                case UI_GRAD_V:
                        x= v; y= 0.5; break;
        }
        
        /* cursor */
        x= rect->xmin + x*(rect->xmax-rect->xmin);
        y= rect->ymin + y*(rect->ymax-rect->ymin);
        CLAMP(x, rect->xmin+3.0f, rect->xmax-3.0f);
        CLAMP(y, rect->ymin+3.0f, rect->ymax-3.0f);
        
        ui_hsv_cursor(x, y);
        
        /* outline */
        glColor3ub(0,  0,  0);
        fdrawbox((rect->xmin), (rect->ymin), (rect->xmax), (rect->ymax));
}

/* vertical 'value' slider, using new widget code */
static void ui_draw_but_HSV_v(uiBut *but, rcti *rect)
{
        uiWidgetBase wtb;
        float rad= 0.5f*(rect->xmax - rect->xmin);
        float x, y;
        float rgb[3], hsv[3], v, range;
        int color_profile = but->block->color_profile;
        
        if (but->rnaprop && RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
                color_profile = BLI_PR_NONE;

        ui_get_but_vectorf(but, rgb);
        rgb_to_hsv(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
        v = hsv[2];
        
        if (color_profile)
                v = linearrgb_to_srgb(v);

        /* map v from property range to [0,1] */
        range = but->softmax - but->softmin;
        v =     (v - but->softmin)/range;
        
        widget_init(&wtb);
        
        /* fully rounded */
        round_box_edges(&wtb, 15, rect, rad);
        
        /* setup temp colors */
        wcol_tmp.outline[0]= wcol_tmp.outline[1]= wcol_tmp.outline[2]= 0;
        wcol_tmp.inner[0]= wcol_tmp.inner[1]= wcol_tmp.inner[2]= 128;
        wcol_tmp.shadetop= 127;
        wcol_tmp.shadedown= -128;
        wcol_tmp.shaded= 1;
        
        widgetbase_draw(&wtb, &wcol_tmp);

        /* cursor */
        x= rect->xmin + 0.5f * (rect->xmax-rect->xmin);
        y= rect->ymin + v * (rect->ymax-rect->ymin);
        CLAMP(y, rect->ymin+3.0f, rect->ymax-3.0f);
        
        ui_hsv_cursor(x, y);
        
}


/* ************ separator, for menus etc ***************** */
static void ui_draw_separator(rcti *rect,  uiWidgetColors *wcol)
{
        int y = rect->ymin + (rect->ymax - rect->ymin)/2 - 1;
        unsigned char col[4];
        
        col[0] = wcol->text[0];
        col[1] = wcol->text[1];
        col[2] = wcol->text[2];
        col[3] = 7;
        
        glEnable(GL_BLEND);
        glColor4ubv(col);
        sdrawline(rect->xmin, y, rect->xmax, y);
        glDisable(GL_BLEND);
}

/* ************ button callbacks, draw ***************** */

static void widget_numbut(uiWidgetColors *wcol, rcti *rect, int state, int roundboxalign)
{
        uiWidgetBase wtb;
        float rad= 0.5f*(rect->ymax - rect->ymin);
        float textofs = rad*0.75f;

        if(state & UI_SELECT)
                SWAP(short, wcol->shadetop, wcol->shadedown);
        
        widget_init(&wtb);
        
        /* fully rounded */
        round_box_edges(&wtb, roundboxalign, rect, rad);
        
        /* decoration */
        if(!(state & UI_TEXTINPUT)) {
                widget_num_tria(&wtb.tria1, rect, 0.6f, 'l');
                widget_num_tria(&wtb.tria2, rect, 0.6f, 'r');
        }

        widgetbase_draw(&wtb, wcol);
        
        /* text space */
        rect->xmin += textofs;
        rect->xmax -= textofs;
}

//static int ui_link_bezier_points(rcti *rect, float coord_array[][2], int resol)
int ui_link_bezier_points(rcti *rect, float coord_array[][2], int resol)
{
        float dist, vec[4][2];

        vec[0][0]= rect->xmin;
        vec[0][1]= rect->ymin;
        vec[3][0]= rect->xmax;
        vec[3][1]= rect->ymax;
        
        dist= 0.5f*ABS(vec[0][0] - vec[3][0]);
        
        vec[1][0]= vec[0][0]+dist;
        vec[1][1]= vec[0][1];
        
        vec[2][0]= vec[3][0]-dist;
        vec[2][1]= vec[3][1];
        
        forward_diff_bezier(vec[0][0], vec[1][0], vec[2][0], vec[3][0], coord_array[0], resol, sizeof(float)*2);
        forward_diff_bezier(vec[0][1], vec[1][1], vec[2][1], vec[3][1], coord_array[0]+1, resol, sizeof(float)*2);
        
        return 1;
}

#define LINK_RESOL      24
void ui_draw_link_bezier(rcti *rect)
{
        float coord_array[LINK_RESOL+1][2];
        
        if(ui_link_bezier_points(rect, coord_array, LINK_RESOL)) {
                /* we can reuse the dist variable here to increment the GL curve eval amount*/
                // const float dist= 1.0f/(float)LINK_RESOL; // UNUSED
                int i;

                glEnable(GL_BLEND);
                glEnable(GL_LINE_SMOOTH);
                
                glBegin(GL_LINE_STRIP);
                for(i=0; i<=LINK_RESOL; i++) {
                        glVertex2fv(coord_array[i]);
                }
                glEnd();
                
                glDisable(GL_BLEND);
                glDisable(GL_LINE_SMOOTH);

        }
}

/* function in use for buttons and for view2d sliders */
void uiWidgetScrollDraw(uiWidgetColors *wcol, rcti *rect, rcti *slider, int state)
{
        uiWidgetBase wtb;
        float rad;
        int horizontal;
        short outline=0;

        widget_init(&wtb);

        /* determine horizontal/vertical */
        horizontal= (rect->xmax - rect->xmin > rect->ymax - rect->ymin);
        
        if(horizontal)
                rad= 0.5f*(rect->ymax - rect->ymin);
        else
                rad= 0.5f*(rect->xmax - rect->xmin);
        
        wtb.shadedir= (horizontal)? 1: 0;
        
        /* draw back part, colors swapped and shading inverted */
        if(horizontal)
                SWAP(short, wcol->shadetop, wcol->shadedown);
        
        round_box_edges(&wtb, 15, rect, rad); 
        widgetbase_draw(&wtb, wcol);
        
        /* slider */
        if(slider->xmax-slider->xmin<2 || slider->ymax-slider->ymin<2);
        else {
                
                SWAP(short, wcol->shadetop, wcol->shadedown);
                
                QUATCOPY(wcol->inner, wcol->item);
                
                if(wcol->shadetop>wcol->shadedown)
                        wcol->shadetop+= 20;    /* XXX violates themes... */
                else wcol->shadedown+= 20;
                
                if(state & UI_SCROLL_PRESSED) {
                        wcol->inner[0]= wcol->inner[0]>=250? 255 : wcol->inner[0]+5;
                        wcol->inner[1]= wcol->inner[1]>=250? 255 : wcol->inner[1]+5;
                        wcol->inner[2]= wcol->inner[2]>=250? 255 : wcol->inner[2]+5;
                }

                /* draw */
                wtb.emboss= 0; /* only emboss once */
                
                /* exception for progress bar */
                if (state & UI_SCROLL_NO_OUTLINE)       
                        SWAP(short, outline, wtb.outline);
                
                round_box_edges(&wtb, 15, slider, rad); 
                
                if(state & UI_SCROLL_ARROWS) {
                        if(wcol->item[0] > 48) wcol->item[0]-= 48;
                        if(wcol->item[1] > 48) wcol->item[1]-= 48;
                        if(wcol->item[2] > 48) wcol->item[2]-= 48;
                        wcol->item[3]= 255;
                        
                        if(horizontal) {
                                widget_scroll_circle(&wtb.tria1, slider, 0.6f, 'l');
                                widget_scroll_circle(&wtb.tria2, slider, 0.6f, 'r');
                        }
                        else {
                                widget_scroll_circle(&wtb.tria1, slider, 0.6f, 'b');
                                widget_scroll_circle(&wtb.tria2, slider, 0.6f, 't');
                        }
                }
                widgetbase_draw(&wtb, wcol);
                
                if (state & UI_SCROLL_NO_OUTLINE)
                        SWAP(short, outline, wtb.outline);
        }       
}

static void widget_scroll(uiBut *but, uiWidgetColors *wcol, rcti *rect, int state, int UNUSED(roundboxalign))
{
        rcti rect1;
        double value;
        float fac, size, min;
        int horizontal;

        /* calculate slider part */
        value= ui_get_but_val(but);

        size= (but->softmax + but->a1 - but->softmin);
        size= MAX2(size, 2);
        
        /* position */
        rect1= *rect;

        /* determine horizontal/vertical */
        horizontal= (rect->xmax - rect->xmin > rect->ymax - rect->ymin);
        
        if(horizontal) {
                fac= (rect->xmax - rect->xmin)/(size);
                rect1.xmin= rect1.xmin + ceilf(fac*((float)value - but->softmin));
                rect1.xmax= rect1.xmin + ceilf(fac*(but->a1 - but->softmin));

                /* ensure minimium size */
                min= rect->ymax - rect->ymin;

                if(rect1.xmax - rect1.xmin < min) {
                        rect1.xmax= rect1.xmin + min;

                        if(rect1.xmax > rect->xmax) {
                                rect1.xmax= rect->xmax;
                                rect1.xmin= MAX2(rect1.xmax - min, rect->xmin);
                        }
                }
        }
        else {
                fac= (rect->ymax - rect->ymin)/(size);
                rect1.ymax= rect1.ymax - ceilf(fac*((float)value - but->softmin));
                rect1.ymin= rect1.ymax - ceilf(fac*(but->a1 - but->softmin));

                /* ensure minimium size */
                min= rect->xmax - rect->xmin;

                if(rect1.ymax - rect1.ymin < min) {
                        rect1.ymax= rect1.ymin + min;

                        if(rect1.ymax > rect->ymax) {
                                rect1.ymax= rect->ymax;
                                rect1.ymin= MAX2(rect1.ymax - min, rect->ymin);
                        }
                }
        }

        if(state & UI_SELECT)
                state= UI_SCROLL_PRESSED;
        else
                state= 0;
        uiWidgetScrollDraw(wcol, rect, &rect1, state);
}

static void widget_progressbar(uiBut *but, uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int UNUSED(roundboxalign))
{
        rcti rect_prog = *rect, rect_bar = *rect;
        float value = but->a1;
        float w, min;
        
        /* make the progress bar a proportion of the original height */
        /* hardcoded 4px high for now */
        rect_prog.ymax = rect_prog.ymin + 4;
        rect_bar.ymax = rect_bar.ymin + 4;
        
        w = value * (rect_prog.xmax - rect_prog.xmin);
        
        /* ensure minimium size */
        min= rect_prog.ymax - rect_prog.ymin;
        w = MAX2(w, min);
        
        rect_bar.xmax = rect_bar.xmin + w;
                
        uiWidgetScrollDraw(wcol, &rect_prog, &rect_bar, UI_SCROLL_NO_OUTLINE);
        
        /* raise text a bit */
        rect->ymin += 6;
        rect->xmin -= 6;
}

static void widget_link(uiBut *but, uiWidgetColors *UNUSED(wcol), rcti *rect, int UNUSED(state), int UNUSED(roundboxalign))
{
        
        if(but->flag & UI_SELECT) {
                rcti rectlink;
                
                UI_ThemeColor(TH_TEXT_HI);
                
                rectlink.xmin= (rect->xmin+rect->xmax)/2;
                rectlink.ymin= (rect->ymin+rect->ymax)/2;
                rectlink.xmax= but->linkto[0];
                rectlink.ymax= but->linkto[1];
                
                ui_draw_link_bezier(&rectlink);
        }
}

static void widget_numslider(uiBut *but, uiWidgetColors *wcol, rcti *rect, int state, int roundboxalign)
{
        uiWidgetBase wtb, wtb1;
        rcti rect1;
        double value;
        float offs, toffs, fac;
        char outline[3];

        widget_init(&wtb);
        widget_init(&wtb1);
        
        /* backdrop first */
        
        /* fully rounded */
        offs= 0.5f*(rect->ymax - rect->ymin);
        toffs = offs*0.75f;
        round_box_edges(&wtb, roundboxalign, rect, offs);

        wtb.outline= 0;
        widgetbase_draw(&wtb, wcol);
        
        /* draw left/right parts only when not in text editing */
        if(!(state & UI_TEXTINPUT)) {
                
                        /* slider part */
                VECCOPY(outline, wcol->outline);
                VECCOPY(wcol->outline, wcol->item);
                VECCOPY(wcol->inner, wcol->item);

                if(!(state & UI_SELECT))
                        SWAP(short, wcol->shadetop, wcol->shadedown);
                
                rect1= *rect;
                
                value= ui_get_but_val(but);
                fac= ((float)value-but->softmin)*(rect1.xmax - rect1.xmin - offs)/(but->softmax - but->softmin);
                
                /* left part of slider, always rounded */
                rect1.xmax= rect1.xmin + ceil(offs+1.0f);
                round_box_edges(&wtb1, roundboxalign & ~6, &rect1, offs);
                wtb1.outline= 0;
                widgetbase_draw(&wtb1, wcol);
                
                /* right part of slider, interpolate roundness */
                rect1.xmax= rect1.xmin + fac + offs;
                rect1.xmin+=  floor(offs-1.0f);
                if(rect1.xmax + offs > rect->xmax)
                        offs*= (rect1.xmax + offs - rect->xmax)/offs;
                else 
                        offs= 0.0f;
                round_box_edges(&wtb1, roundboxalign & ~9, &rect1, offs);
                
                widgetbase_draw(&wtb1, wcol);
                VECCOPY(wcol->outline, outline);
                
                if(!(state & UI_SELECT))
                        SWAP(short, wcol->shadetop, wcol->shadedown);
        }
        
        /* outline */
        wtb.outline= 1;
        wtb.inner= 0;
        widgetbase_draw(&wtb, wcol);
        
        /* text space */
        rect->xmin += toffs;
        rect->xmax -= toffs;
}

/* I think 3 is sufficient border to indicate keyed status */
#define SWATCH_KEYED_BORDER 3

static void widget_swatch(uiBut *but, uiWidgetColors *wcol, rcti *rect, int state, int roundboxalign)
{
        uiWidgetBase wtb;
        float col[4];
        int color_profile = but->block->color_profile;
        
        col[3]= 1.0f;

        if (but->rnaprop) {
                if (RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
                        color_profile = BLI_PR_NONE;

                if(RNA_property_array_length(&but->rnapoin, but->rnaprop)==4) {
                        col[3]= RNA_property_float_get_index(&but->rnapoin, but->rnaprop, 3);
                }
        }
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 5.0f);
                
        ui_get_but_vectorf(but, col);
        
        if(state & (UI_BUT_ANIMATED|UI_BUT_ANIMATED_KEY|UI_BUT_DRIVEN|UI_BUT_REDALERT)) {
                // draw based on state - color for keyed etc
                widgetbase_draw(&wtb, wcol);
                
                // inset to draw swatch color
                rect->xmin+= SWATCH_KEYED_BORDER;
                rect->xmax-= SWATCH_KEYED_BORDER;
                rect->ymin+= SWATCH_KEYED_BORDER;
                rect->ymax-= SWATCH_KEYED_BORDER;
                
                round_box_edges(&wtb, roundboxalign, rect, 5.0f);
        }
        
        if (color_profile)
                linearrgb_to_srgb_v3_v3(col, col);
        
        wcol->inner[0]= FTOCHAR(col[0]);
        wcol->inner[1]= FTOCHAR(col[1]);
        wcol->inner[2]= FTOCHAR(col[2]);
        wcol->inner[3]= FTOCHAR(col[3]);
        wcol->shaded = 0;
        wcol->alpha_check = (wcol->inner[3] < 255);

        widgetbase_draw(&wtb, wcol);
        
}

static void widget_icon_has_anim(uiBut *UNUSED(but), uiWidgetColors *wcol, rcti *rect, int state, int UNUSED(roundboxalign))
{
        if(state & (UI_BUT_ANIMATED|UI_BUT_ANIMATED_KEY|UI_BUT_DRIVEN|UI_BUT_REDALERT)) {
                uiWidgetBase wtb;
        
                widget_init(&wtb);
                wtb.outline= 0;
                
                /* rounded */
                round_box_edges(&wtb, 15, rect, 10.0f);
                widgetbase_draw(&wtb, wcol);
        }       
}


static void widget_textbut(uiWidgetColors *wcol, rcti *rect, int state, int roundboxalign)
{
        uiWidgetBase wtb;
        
        if(state & UI_SELECT)
                SWAP(short, wcol->shadetop, wcol->shadedown);
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
        
        widgetbase_draw(&wtb, wcol);

}


static void widget_menubut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
        
        /* decoration */
        widget_menu_trias(&wtb.tria1, rect);
        
        widgetbase_draw(&wtb, wcol);
        
        /* text space */
        rect->xmax -= (rect->ymax-rect->ymin);
}

static void widget_menuiconbut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
        
        /* decoration */
        widgetbase_draw(&wtb, wcol);
}

static void widget_pulldownbut(uiWidgetColors *wcol, rcti *rect, int state, int UNUSED(roundboxalign))
{
        if(state & UI_ACTIVE) {
                uiWidgetBase wtb;
                float rad= 0.5f*(rect->ymax - rect->ymin); // 4.0f
                
                widget_init(&wtb);
                
                /* half rounded */
                round_box_edges(&wtb, 15, rect, rad);
                
                widgetbase_draw(&wtb, wcol);
        }
}

static void widget_menu_itembut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int UNUSED(roundboxalign))
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* not rounded, no outline */
        wtb.outline= 0;
        round_box_edges(&wtb, 0, rect, 0.0f);
        
        widgetbase_draw(&wtb, wcol);
}

static void widget_list_itembut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int UNUSED(roundboxalign))
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* rounded, but no outline */
        wtb.outline= 0;
        round_box_edges(&wtb, 15, rect, 4.0f);
        
        widgetbase_draw(&wtb, wcol);
}

static void widget_optionbut(uiWidgetColors *wcol, rcti *rect, int state, int UNUSED(roundboxalign))
{
        uiWidgetBase wtb;
        rcti recttemp= *rect;
        int delta;
        
        widget_init(&wtb);
        
        /* square */
        recttemp.xmax= recttemp.xmin + (recttemp.ymax-recttemp.ymin);
        
        /* smaller */
        delta= 1 + (recttemp.ymax-recttemp.ymin)/8;
        recttemp.xmin+= delta;
        recttemp.ymin+= delta;
        recttemp.xmax-= delta;
        recttemp.ymax-= delta;
        
        /* half rounded */
        round_box_edges(&wtb, 15, &recttemp, 4.0f);
        
        /* decoration */
        if(state & UI_SELECT) {
                widget_check_trias(&wtb.tria1, &recttemp);
        }
        
        widgetbase_draw(&wtb, wcol);
        
        /* text space */
        rect->xmin += (rect->ymax-rect->ymin)*0.7 + delta;
}


static void widget_radiobut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
        
        widgetbase_draw(&wtb, wcol);

}

static void widget_box(uiBut *but, uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        char old_col[3];
        
        widget_init(&wtb);
        
        VECCOPY(old_col, wcol->inner);
        
        /* abuse but->hsv - if it's non-zero, use this color as the box's background */
        if (but->col[3]) {
                wcol->inner[0] = but->col[0];
                wcol->inner[1] = but->col[1];
                wcol->inner[2] = but->col[2];
        }
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
        
        widgetbase_draw(&wtb, wcol);
        
        /* store the box bg as gl clearcolor, to retrieve later when drawing semi-transparent rects
         * over the top to indicate disabled buttons */
        /* XXX, this doesnt work right since the color applies to buttons outside the box too. */
        glClearColor(wcol->inner[0]/255.0, wcol->inner[1]/255.0, wcol->inner[2]/255.0, 1.0);
        
        VECCOPY(wcol->inner, old_col);
}

static void widget_but(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, 4.0f);
                
        widgetbase_draw(&wtb, wcol);

}

static void widget_roundbut(uiWidgetColors *wcol, rcti *rect, int UNUSED(state), int roundboxalign)
{
        uiWidgetBase wtb;
        float rad= 5.0f; //0.5f*(rect->ymax - rect->ymin);
        
        widget_init(&wtb);
        
        /* half rounded */
        round_box_edges(&wtb, roundboxalign, rect, rad);

        widgetbase_draw(&wtb, wcol);
}

static void widget_draw_extra_mask(const bContext *C, uiBut *but, uiWidgetType *wt, rcti *rect)
{
        uiWidgetBase wtb;
        unsigned char col[4];
        
        /* state copy! */
        wt->wcol= *(wt->wcol_theme);
        
        widget_init(&wtb);
        
        if(but->block->drawextra) {
                /* note: drawextra can change rect +1 or -1, to match round errors of existing previews */
                but->block->drawextra(C, but->poin, but->block->drawextra_arg1, but->block->drawextra_arg2, rect);
                
                /* make mask to draw over image */
                UI_GetThemeColor3ubv(TH_BACK, col);
                glColor3ubv(col);
                
                round_box__edges(&wtb, 15, rect, 0.0f, 4.0);
                widgetbase_outline(&wtb);
        }
        
        /* outline */
        round_box_edges(&wtb, 15, rect, 5.0f);
        wtb.outline= 1;
        wtb.inner= 0;
        widgetbase_draw(&wtb, &wt->wcol);
        
}


static void widget_disabled(rcti *rect)
{
        float col[4];
        
        glEnable(GL_BLEND);
        
        /* can't use theme TH_BACK or TH_PANEL... undefined */
        glGetFloatv(GL_COLOR_CLEAR_VALUE, col);
        glColor4f(col[0], col[1], col[2], 0.5f);

        /* need -1 and +1 to make it work right for aligned buttons,
         * but problem may be somewhere else? */
        glRectf(rect->xmin-1, rect->ymin-1, rect->xmax, rect->ymax+1);
        
        glDisable(GL_BLEND);
}

static uiWidgetType *widget_type(uiWidgetTypeEnum type)
{
        bTheme *btheme= U.themes.first;
        static uiWidgetType wt;
        
        /* defaults */
        wt.wcol_theme= &btheme->tui.wcol_regular;
        wt.wcol_state= &btheme->tui.wcol_state;
        wt.state= widget_state;
        wt.draw= widget_but;
        wt.custom= NULL;
        wt.text= widget_draw_text_icon;
        
        switch(type) {
                case UI_WTYPE_REGULAR:
                        break;

                case UI_WTYPE_LABEL:
                        wt.draw= NULL;
                        wt.state= widget_state_label;
                        break;
                        
                case UI_WTYPE_TOGGLE:
                        wt.wcol_theme= &btheme->tui.wcol_toggle;
                        break;
                        
                case UI_WTYPE_OPTION:
                        wt.wcol_theme= &btheme->tui.wcol_option;
                        wt.draw= widget_optionbut;
                        break;
                        
                case UI_WTYPE_RADIO:
                        wt.wcol_theme= &btheme->tui.wcol_radio;
                        wt.draw= widget_radiobut;
                        break;

                case UI_WTYPE_NUMBER:
                        wt.wcol_theme= &btheme->tui.wcol_num;
                        wt.draw= widget_numbut;
                        break;
                        
                case UI_WTYPE_SLIDER:
                        wt.wcol_theme= &btheme->tui.wcol_numslider;
                        wt.custom= widget_numslider;
                        wt.state= widget_state_numslider;
                        break;
                        
                case UI_WTYPE_EXEC:
                        wt.wcol_theme= &btheme->tui.wcol_tool;
                        wt.draw= widget_roundbut;
                        break;
                        
                        
                        /* strings */
                case UI_WTYPE_NAME:
                        wt.wcol_theme= &btheme->tui.wcol_text;
                        wt.draw= widget_textbut;
                        break;
                        
                case UI_WTYPE_NAME_LINK:
                        break;
                        
                case UI_WTYPE_POINTER_LINK:
                        break;
                        
                case UI_WTYPE_FILENAME:
                        break;
                        
                        
                        /* start menus */
                case UI_WTYPE_MENU_RADIO:
                        wt.wcol_theme= &btheme->tui.wcol_menu;
                        wt.draw= widget_menubut;
                        break;

                case UI_WTYPE_MENU_ICON_RADIO:
                        wt.wcol_theme= &btheme->tui.wcol_menu;
                        wt.draw= widget_menuiconbut;
                        break;
                        
                case UI_WTYPE_MENU_POINTER_LINK:
                        wt.wcol_theme= &btheme->tui.wcol_menu;
                        wt.draw= widget_menubut;
                        break;
                        
                case UI_WTYPE_PULLDOWN:
                        wt.wcol_theme= &btheme->tui.wcol_pulldown;
                        wt.draw= widget_pulldownbut;
                        wt.state= widget_state_pulldown;
                        break;
                        
                        /* in menus */
                case UI_WTYPE_MENU_ITEM:
                        wt.wcol_theme= &btheme->tui.wcol_menu_item;
                        wt.draw= widget_menu_itembut;
                        wt.state= widget_state_menu_item;
                        break;
                        
                case UI_WTYPE_MENU_BACK:
                        wt.wcol_theme= &btheme->tui.wcol_menu_back;
                        wt.draw= widget_menu_back;
                        break;
                        
                        /* specials */
                case UI_WTYPE_ICON:
                        wt.custom= widget_icon_has_anim;
                        break;
                        
                case UI_WTYPE_SWATCH:
                        wt.custom= widget_swatch;
                        break;
                        
                case UI_WTYPE_BOX:
                        wt.custom= widget_box;
                        wt.wcol_theme= &btheme->tui.wcol_box;
                        break;
                        
                case UI_WTYPE_RGB_PICKER:
                        break;
                        
                case UI_WTYPE_NORMAL:
                        break;

                case UI_WTYPE_SCROLL:
                        wt.wcol_theme= &btheme->tui.wcol_scroll;
                        wt.state= widget_state_nothing;
                        wt.custom= widget_scroll;
                        break;

                case UI_WTYPE_LISTITEM:
                        wt.wcol_theme= &btheme->tui.wcol_list_item;
                        wt.draw= widget_list_itembut;
                        break;
                        
                case UI_WTYPE_PROGRESSBAR:
                        wt.wcol_theme= &btheme->tui.wcol_progress;
                        wt.custom= widget_progressbar;
                        break;
        }
        
        return &wt;
}


static int widget_roundbox_set(uiBut *but, rcti *rect)
{
        /* alignment */
        if(but->flag & UI_BUT_ALIGN) {
                
                if(but->flag & UI_BUT_ALIGN_TOP)
                        rect->ymax+= 1;
                if(but->flag & UI_BUT_ALIGN_LEFT)
                        rect->xmin-= 1;
                
                switch(but->flag & UI_BUT_ALIGN) {
                        case UI_BUT_ALIGN_TOP:
                                return (12);
                                break;
                        case UI_BUT_ALIGN_DOWN:
                                return (3);
                                break;
                        case UI_BUT_ALIGN_LEFT:
                                return (6);
                                break;
                        case UI_BUT_ALIGN_RIGHT:
                                return (9);
                                break;
                                
                        case UI_BUT_ALIGN_DOWN|UI_BUT_ALIGN_RIGHT:
                                return (1);
                                break;
                        case UI_BUT_ALIGN_DOWN|UI_BUT_ALIGN_LEFT:
                                return (2);
                                break;
                        case UI_BUT_ALIGN_TOP|UI_BUT_ALIGN_RIGHT:
                                return (8);
                                break;
                        case UI_BUT_ALIGN_TOP|UI_BUT_ALIGN_LEFT:
                                return (4);
                                break;
                                
                        default:
                                return (0);
                                break;
                }
        } 
        return 15;
}

/* conversion from old to new buttons, so still messy */
void ui_draw_but(const bContext *C, ARegion *ar, uiStyle *style, uiBut *but, rcti *rect)
{
        bTheme *btheme= U.themes.first;
        ThemeUI *tui= &btheme->tui;
        uiFontStyle *fstyle= &style->widget;
        uiWidgetType *wt= NULL;

        /* handle menus separately */
        if(but->dt==UI_EMBOSSP) {
                switch (but->type) {
                        case LABEL:
                                widget_draw_text_icon(&style->widgetlabel, &tui->wcol_menu_back, but, rect);
                                break;
                        case SEPR:
                                ui_draw_separator(rect, &tui->wcol_menu_item);
                                break;
                                
                        default:
                                wt= widget_type(UI_WTYPE_MENU_ITEM);
                }
        }
        else if(but->dt==UI_EMBOSSN) {
                /* "nothing" */
                wt= widget_type(UI_WTYPE_ICON);
        }
        else {
                
                switch (but->type) {
                        case LABEL:
                                if(but->block->flag & UI_BLOCK_LOOP)
                                        widget_draw_text_icon(&style->widgetlabel, &tui->wcol_menu_back, but, rect);
                                else {
                                        wt= widget_type(UI_WTYPE_LABEL);
                                        fstyle= &style->widgetlabel;
                                }
                                break;
                                
                        case SEPR:
                                break;
                                
                        case BUT:
                                wt= widget_type(UI_WTYPE_EXEC);
                                break;

                        case NUM:
                                wt= widget_type(UI_WTYPE_NUMBER);
                                break;
                                
                        case NUMSLI:
                        case HSVSLI:
                                wt= widget_type(UI_WTYPE_SLIDER);
                                break;
                                
                        case ROW:
                                wt= widget_type(UI_WTYPE_RADIO);
                                break;

                        case LISTROW:
                                wt= widget_type(UI_WTYPE_LISTITEM);
                                break;
                                
                        case TEX:
                                wt= widget_type(UI_WTYPE_NAME);
                                break;
                                
                        case SEARCH_MENU:
                                wt= widget_type(UI_WTYPE_NAME);
                                if(but->block->flag & UI_BLOCK_LOOP)
                                        wt->wcol_theme= &btheme->tui.wcol_menu_back;
                                break;
                                
                        case TOGBUT:
                        case TOG:
                        case TOGN:
                        case TOG3:
                                wt= widget_type(UI_WTYPE_TOGGLE);
                                break;
                                
                        case OPTION:
                        case OPTIONN:
                                if (!(but->flag & UI_HAS_ICON)) {
                                        wt= widget_type(UI_WTYPE_OPTION);
                                        but->flag |= UI_TEXT_LEFT;
                                }
                                else
                                        wt= widget_type(UI_WTYPE_TOGGLE);
                                
                                /* option buttons have strings outside, on menus use different colors */
                                if(but->block->flag & UI_BLOCK_LOOP)
                                        wt->state= widget_state_option_menu;
                                
                                break;
                                
                        case MENU:
                        case BLOCK:
                        case ICONTEXTROW:
                                if(!but->str[0] && but->icon)
                                        wt= widget_type(UI_WTYPE_MENU_ICON_RADIO);
                                else
                                        wt= widget_type(UI_WTYPE_MENU_RADIO);
                                break;
                                
                        case PULLDOWN:
                                wt= widget_type(UI_WTYPE_PULLDOWN);
                                break;
                        
                        case BUTM:
                                wt= widget_type(UI_WTYPE_MENU_ITEM);
                                break;
                                
                        case COL:
                                wt= widget_type(UI_WTYPE_SWATCH);
                                break;
                                
                        case ROUNDBOX:
                        case LISTBOX:
                                wt= widget_type(UI_WTYPE_BOX);
                                break;
                                
                        case LINK:
                        case INLINK:
                                wt= widget_type(UI_WTYPE_ICON);
                                wt->custom= widget_link;
                                
                                break;
                        
                        case BUT_EXTRA:
                                widget_draw_extra_mask(C, but, widget_type(UI_WTYPE_BOX), rect);
                                break;
                                
                        case HSVCUBE:
                                if(but->a1 == UI_GRAD_V_ALT) // vertical V slider, uses new widget draw now
                                        ui_draw_but_HSV_v(but, rect);
                                else  // other HSV pickers...
                                        ui_draw_but_HSVCUBE(but, rect);
                                break;
                                
                        case HSVCIRCLE:
                                ui_draw_but_HSVCIRCLE(but, &tui->wcol_regular, rect);
                                break;
                                
                        case BUT_COLORBAND:
                                ui_draw_but_COLORBAND(but, &tui->wcol_regular, rect);
                                break;
                                
                        case BUT_NORMAL:
                                ui_draw_but_NORMAL(but, &tui->wcol_regular, rect);
                                break;
                                
                        case BUT_IMAGE:
                                ui_draw_but_IMAGE(ar, but, &tui->wcol_regular, rect);
                                break;
                        
                        case HISTOGRAM:
                                ui_draw_but_HISTOGRAM(ar, but, &tui->wcol_regular, rect);
                                break;
                                
                        case WAVEFORM:
                                ui_draw_but_WAVEFORM(ar, but, &tui->wcol_regular, rect);
                                break;
                                
                        case VECTORSCOPE:
                                ui_draw_but_VECTORSCOPE(ar, but, &tui->wcol_regular, rect);
                                break;
                                        
                        case BUT_CURVE:
                                ui_draw_but_CURVE(ar, but, &tui->wcol_regular, rect);
                                break;
                                
                        case PROGRESSBAR:
                                wt= widget_type(UI_WTYPE_PROGRESSBAR);
                                fstyle= &style->widgetlabel;
                                break;

                        case SCROLL:
                                wt= widget_type(UI_WTYPE_SCROLL);
                                break;

                        default:
                                wt= widget_type(UI_WTYPE_REGULAR);
                }
        }
        
        if(wt) {
                rcti disablerect= *rect; /* rect gets clipped smaller for text */
                int roundboxalign, state;
                
                roundboxalign= widget_roundbox_set(but, rect);

                state= but->flag;
                if(but->editstr) state |= UI_TEXTINPUT;
                
                wt->state(wt, state);
                if(wt->custom)
                        wt->custom(but, &wt->wcol, rect, state, roundboxalign);
                else if(wt->draw)
                        wt->draw(&wt->wcol, rect, state, roundboxalign);
                wt->text(fstyle, &wt->wcol, but, rect);
                
                if(state & (UI_BUT_DISABLED|UI_BUT_INACTIVE))
                        if(but->dt!=UI_EMBOSSP)
                                widget_disabled(&disablerect);
        }
}

void ui_draw_menu_back(uiStyle *UNUSED(style), uiBlock *block, rcti *rect)
{
        uiWidgetType *wt= widget_type(UI_WTYPE_MENU_BACK);
        
        wt->state(wt, 0);
        if(block)
                wt->draw(&wt->wcol, rect, block->flag, block->direction);
        else
                wt->draw(&wt->wcol, rect, 0, 0);
        
        if(block) {
                if(block->flag & UI_BLOCK_CLIPTOP) {
                        /* XXX no scaling for UI here yet */
                        glColor3ubv((unsigned char*)wt->wcol.text);
                        UI_DrawTriIcon((rect->xmax+rect->xmin)/2, rect->ymax-8, 't');
                }
                if(block->flag & UI_BLOCK_CLIPBOTTOM) {
                        /* XXX no scaling for UI here yet */
                        glColor3ubv((unsigned char*)wt->wcol.text);
                        UI_DrawTriIcon((rect->xmax+rect->xmin)/2, rect->ymin+10, 'v');
                }
        }       
}

void ui_draw_search_back(uiStyle *UNUSED(style), uiBlock *block, rcti *rect)
{
        uiWidgetType *wt= widget_type(UI_WTYPE_BOX);
        
        glEnable(GL_BLEND);
        widget_softshadow(rect, 15, 5.0f, 8.0f);
        glDisable(GL_BLEND);

        wt->state(wt, 0);
        if(block)
                wt->draw(&wt->wcol, rect, block->flag, 15);
        else
                wt->draw(&wt->wcol, rect, 0, 15);
        
}


/* helper call to draw a menu item without button */
/* state: UI_ACTIVE or 0 */
void ui_draw_menu_item(uiFontStyle *fstyle, rcti *rect, const char *name, int iconid, int state)
{
        uiWidgetType *wt= widget_type(UI_WTYPE_MENU_ITEM);
        rcti _rect= *rect;
        char *cpoin;
        
        wt->state(wt, state);
        wt->draw(&wt->wcol, rect, 0, 0);
        
        uiStyleFontSet(fstyle);
        fstyle->align= UI_STYLE_TEXT_LEFT;
        
        /* text location offset */
        rect->xmin+=5;
        if(iconid) rect->xmin+= UI_DPI_ICON_SIZE;

        /* cut string in 2 parts? */
        cpoin= strchr(name, '|');
        if(cpoin) {
                *cpoin= 0;
                rect->xmax -= BLF_width(fstyle->uifont_id, cpoin+1) + 10;
        }
        
        glColor3ubv((unsigned char*)wt->wcol.text);
        uiStyleFontDraw(fstyle, rect, name);
        
        /* part text right aligned */
        if(cpoin) {
                fstyle->align= UI_STYLE_TEXT_RIGHT;
                rect->xmax= _rect.xmax - 5;
                uiStyleFontDraw(fstyle, rect, cpoin+1);
                *cpoin= '|';
        }
        
        /* restore rect, was messed with */
        *rect= _rect;

        if(iconid) {
                int xs= rect->xmin+4;
                int ys= 1 + (rect->ymin+rect->ymax- UI_DPI_ICON_SIZE)/2;
                glEnable(GL_BLEND);
                UI_icon_draw_aspect(xs, ys, iconid, 1.2f, 0.5f); /* XXX scale weak get from fstyle? */
                glDisable(GL_BLEND);
        }
}

void ui_draw_preview_item(uiFontStyle *fstyle, rcti *rect, const char *name, int iconid, int state)
{
        rcti trect = *rect;
        
        uiWidgetType *wt= widget_type(UI_WTYPE_MENU_ITEM);
        
        wt->state(wt, state);
        wt->draw(&wt->wcol, rect, 0, 0);
        
        widget_draw_preview(iconid, 1.0f, rect);
        
        if (state == UI_ACTIVE)
                glColor3ubv((unsigned char*)wt->wcol.text);
        else
                glColor3ubv((unsigned char*)wt->wcol.text_sel);
        
        trect.xmin += 0;
        trect.xmax = trect.xmin + BLF_width(fstyle->uifont_id, name) + 10;
        trect.ymin += 10;
        trect.ymax = trect.ymin + BLF_height(fstyle->uifont_id, name);
        uiStyleFontDraw(fstyle, &trect, name);
}