org.jfree.pixie.wmf.records

Class MfCmdRestoreDc


public class MfCmdRestoreDc
extends MfCmd

The RestoreDC function restores a device context (DC) to the specified state. The DC is restored by popping state information off a stack created by earlier calls to the SaveDC function.

BOOL RestoreDC( HDC hdc, // handle to DC int nSavedDC // restore state );

Parameters nSavedDC [in] Specifies the saved state to be restored. If this parameter is positive, nSavedDC represents a specific instance of the state to be restored. If this parameter is negative, nSavedDC represents an instance relative to the current state. For example, 0x01 restores the most recently saved state.

Constructor Summary

MfCmdRestoreDc()
The default constructor, adjusts the scale to 1.

Method Summary

int
getFunction()
Reads the function identifier.
MfCmd
getInstance()
Creates a empty unintialized copy of this command implementation.
int
getNSavedDC()
MfRecord
getRecord()
Creates a new record based on the data stored in the MfCommand.
void
replay(WmfFile file)
Replays the command on the given WmfFile.
protected void
scaleXChanged()
A callback function to inform the object, that the x scale has changed and the internal coordinate values have to be adjusted.
protected void
scaleYChanged()
A callback function to inform the object, that the y scale has changed and the internal coordinate values have to be adjusted.
void
setNSavedDC(int id)
void
setRecord(MfRecord record)
Reads the command data from the given record and adjusts the internal parameters according to the data parsed.
String
toString()

Methods inherited from class org.jfree.pixie.wmf.records.MfCmd

applyScaleX, applyScaleY, getFunction, getInstance, getRecord, getScaledHeight, getScaledWidth, getScaledX, getScaledY, replay, scaleRect, scaleXChanged, scaleYChanged, setRecord, setScale

Constructor Details

MfCmdRestoreDc

public MfCmdRestoreDc()
The default constructor, adjusts the scale to 1.

Method Details

getFunction

public int getFunction()
Reads the function identifier. Every record type is identified by a function number corresponding to one of the Windows GDI functions used.
Overrides:
getFunction in interface MfCmd
Returns:
the function identifier.

getInstance

public MfCmd getInstance()
Creates a empty unintialized copy of this command implementation.
Overrides:
getInstance in interface MfCmd
Returns:
a new instance of the command.

getNSavedDC

public int getNSavedDC()

getRecord

public MfRecord getRecord()
            throws RecordCreationException
Creates a new record based on the data stored in the MfCommand.
Overrides:
getRecord in interface MfCmd
Returns:
the created record.

replay

public void replay(WmfFile file)
Replays the command on the given WmfFile.
Overrides:
replay in interface MfCmd
Parameters:
file - the meta file.

scaleXChanged

protected void scaleXChanged()
A callback function to inform the object, that the x scale has changed and the internal coordinate values have to be adjusted.
Overrides:
scaleXChanged in interface MfCmd

scaleYChanged

protected void scaleYChanged()
A callback function to inform the object, that the y scale has changed and the internal coordinate values have to be adjusted.
Overrides:
scaleYChanged in interface MfCmd

setNSavedDC

public void setNSavedDC(int id)

setRecord

public void setRecord(MfRecord record)
Reads the command data from the given record and adjusts the internal parameters according to the data parsed.

After the raw record was read from the datasource, the record is parsed by the concrete implementation.

Overrides:
setRecord in interface MfCmd
Parameters:
record - the raw data that makes up the record.

toString

public String toString()