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//=========================================================
// MusE
// Linux Music Editor
// $Id: canvas.h,v 1.1.1.1 2003/10/29 10:06:28 wschweer Exp $
// (C) Copyright 1999 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __CANVAS_H__
#define __CANVAS_H__
#include "citem.h"
#include "view.h"
#include "tools.h"
class QPopupMenu;
//---------------------------------------------------------
// Canvas
//---------------------------------------------------------
class Canvas : public View {
Q_OBJECT
int canvasTools;
protected:
enum DragMode {
DRAG_OFF, DRAG_NEW,
DRAG_MOVE_START, DRAG_MOVE,
DRAG_COPY_START, DRAG_COPY,
DRAG_CLONE_START, DRAG_CLONE,
DRAGX_MOVE, DRAGY_MOVE,
DRAGX_COPY, DRAGY_COPY,
DRAGX_CLONE, DRAGY_CLONE,
DRAG_DELETE,
DRAG_RESIZE, DRAG_LASSO_START, DRAG_LASSO,
};
enum DragType {
MOVE_MOVE, MOVE_COPY, MOVE_CLONE
};
CItemList items;
CItemList moving;
CItem* curItem;
Part* curPart;
int curPartId;
DragMode drag;
QRect lasso;
QPoint start;
Tool _tool;
int pos[3];
int yOffset;
int keyState;
QPopupMenu* itemPopupMenu;
QPopupMenu* canvasPopupMenu;
void setCursor();
virtual void viewKeyPressEvent(QKeyEvent* event);
virtual void viewMousePressEvent(QMouseEvent* event);
virtual void viewMouseMoveEvent(QMouseEvent*);
virtual void viewMouseReleaseEvent(QMouseEvent*);
virtual void draw(QPainter&, const QRect&);
virtual void mousePress(QMouseEvent*) {}
virtual void keyPress(QKeyEvent*);
virtual void mouseMove(const QPoint&) = 0;
virtual void mouseRelease(const QPoint&) {}
virtual void drawCanvas(QPainter&, const QRect&) = 0;
virtual void drawItem(QPainter&, const CItem*, const QRect&) const = 0;
virtual void updateSelection() = 0;
virtual QPoint raster(const QPoint&) const = 0;
virtual int y2pitch(int) const = 0; //CDW
virtual int pitch2y(int) const = 0; //CDW
virtual bool moveItem(CItem*, const QPoint&, DragType) = 0;
virtual CItem* newItem(const QPoint&, int state) = 0;
virtual void resizeItem(CItem*, bool noSnap=false) = 0;
virtual void newItem(CItem*, bool noSnap=false) = 0;
virtual bool deleteItem(CItem*) = 0;
virtual void startUndo(DragType) = 0;
virtual void endUndo(DragType) = 0;
virtual QPopupMenu* genItemPopup(CItem*) { return 0; }
QPopupMenu* genCanvasPopup();
virtual void itemPopup(CItem*, int, const QPoint&) {}
void canvasPopup(int);
virtual void startDrag(CItem*, bool) {}
// selection
virtual void deselectAll();
virtual void selectItem(CItem* e, bool);
virtual void deleteItem(const QPoint&);
// moving
void startMoving(const QPoint&, DragType);
void moveItems(const QPoint&, int dir);
void endMoveItems(const QPoint&, DragType, int dir);
virtual void selectLasso(bool toggle);
virtual void itemPressed(const CItem*) {}
virtual void itemReleased(const CItem*, const QPoint&) {}
virtual void itemMoved(const CItem*, const QPoint&) {}
virtual void curPartChanged() {}
public slots:
void setTool(int t);
void setPos(int, int, bool adjustScrollbar);
signals:
void followEvent(int);
void toolChanged(int);
public:
Canvas(QWidget* parent, int sx, int sy, const char* name = 0);
bool isSingleSelection();
int selectionSize();
Tool tool() const { return _tool; }
Part* part() const { return curPart; }
void setCanvasTools(int n) { canvasTools = n; }
};
#endif
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