/usr/include/qgis/qgscomposermultiframecommand.h is in libqgis-dev 2.14.11+dfsg-3+deb9u1.
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qgscomposermultiframecommand.h
------------------------------
begin : 2012-08-02
copyright : (C) 2012 by Marco Hugentobler
email : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef QGSCOMPOSERMULTIFRAMECOMMAND_H
#define QGSCOMPOSERMULTIFRAMECOMMAND_H
#include <QUndoCommand>
#include <QDomDocument>
class QgsComposerMultiFrame;
class CORE_EXPORT QgsComposerMultiFrameCommand: public QUndoCommand
{
public:
QgsComposerMultiFrameCommand( QgsComposerMultiFrame* multiFrame, const QString& text, QUndoCommand* parent = nullptr );
~QgsComposerMultiFrameCommand();
void undo() override;
void redo() override;
void savePreviousState();
void saveAfterState();
QDomDocument previousState() const { return mPreviousState.cloneNode().toDocument(); }
QDomDocument afterState() const { return mAfterState.cloneNode().toDocument(); }
/** Returns true if previous state and after state are valid and different*/
bool containsChange() const;
const QgsComposerMultiFrame* multiFrame() const { return mMultiFrame; }
protected:
QgsComposerMultiFrame* mMultiFrame;
QDomDocument mPreviousState;
QDomDocument mAfterState;
bool mFirstRun;
QgsComposerMultiFrameCommand(); //forbidden
void saveState( QDomDocument& stateDoc );
void restoreState( QDomDocument& stateDoc );
bool checkFirstRun();
};
/** A composer command that merges together with other commands having the same context (=id)
* for multi frame items. Keeps the oldest previous state and uses the newest after state.
* The purpose is to avoid too many micro changes in the history*/
class CORE_EXPORT QgsComposerMultiFrameMergeCommand: public QgsComposerMultiFrameCommand
{
public:
enum Context
{
Unknown = 0,
//composer html
HtmlSource,
HtmlStylesheet,
HtmlBreakDistance,
//attribute table
TableMaximumFeatures,
TableMargin,
TableGridStrokeWidth,
TableCellStyle
};
QgsComposerMultiFrameMergeCommand( Context c, QgsComposerMultiFrame* multiFrame, const QString& text );
~QgsComposerMultiFrameMergeCommand();
bool mergeWith( const QUndoCommand * command ) override;
int id() const override { return static_cast< int >( mContext ); }
private:
Context mContext;
};
#endif // QGSCOMPOSERMULTIFRAMECOMMAND_H
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