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//=========================================================
// MusE
// Linux Music Editor
// $Id: view.h,v 1.1.1.1 2003/10/29 10:06:31 wschweer Exp $
// (C) Copyright 1999 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __VIEW_H__
#define __VIEW_H__
#include <qwidget.h>
#include <qpixmap.h>
#include <qwmatrix.h>
#include <qpainter.h>
#include <qbrush.h>
//---------------------------------------------------------
// View
// horizontal View with double buffering
//---------------------------------------------------------
class View : public QWidget {
QPixmap pm; // for double buffering
bool pmValid;
QPixmap bgPixmap; // background Pixmap
QBrush brush;
bool _virt;
Q_OBJECT
protected:
int xorg;
int yorg;
int xpos, ypos;
int xmag, ymag;
virtual void keyPressEvent(QKeyEvent* event);
virtual void mousePressEvent(QMouseEvent* event);
virtual void mouseDoubleClickEvent(QMouseEvent* event);
virtual void mouseMoveEvent(QMouseEvent* event);
virtual void mouseReleaseEvent(QMouseEvent* event);
virtual void dropEvent(QDropEvent* event);
virtual void draw(QPainter&, const QRect&) {}
virtual void drawOverlay(QPainter&) {}
virtual QRect overlayRect() const { return QRect(0, 0, 0, 0); }
virtual void pdraw(QPainter&, const QRect&);
virtual void paintEvent(QPaintEvent* ev);
void redraw(const QRect&);
void paint(const QRect& r);
virtual void resizeEvent(QResizeEvent*);
virtual void viewKeyPressEvent(QKeyEvent*);
virtual void viewMousePressEvent(QMouseEvent*) {}
virtual void viewMouseDoubleClickEvent(QMouseEvent*) {}
virtual void viewMouseMoveEvent(QMouseEvent*) {}
virtual void viewMouseReleaseEvent(QMouseEvent*) {}
virtual void viewDropEvent(QDropEvent*) {}
QRect map(const QRect&) const;
QPoint map(const QPoint&) const;
QRect mapDev(const QRect&) const;
QPoint mapDev(const QPoint&) const;
int mapx(int x) const;
int mapy(int y) const;
int mapxDev(int x) const;
int mapyDev(int y) const;
int rmapx(int x) const;
int rmapy(int y) const;
int rmapxDev(int x) const;
int rmapyDev(int y) const;
void setPainter(QPainter& p);
public slots:
void setXPos(int);
void setYPos(int);
void setXMag(int xs);
void setYMag(int ys);
void redraw();
public:
View(QWidget*, int, int, const char* name = 0);
void setBg(const QPixmap& pm);
void setBg(const QColor& color) { brush.setColor(color); redraw(); }
void setXOffset(int v) { setXPos(mapx(v)); }
int xOffset() const { return mapxDev(xpos)-xorg; }
int xOffsetDev() const { return xpos-rmapx(xorg); }
int getXScale() const { return xmag; }
int getYScale() const { return ymag; }
void setOrigin(int x, int y);
void setVirt(bool flag) { _virt = flag; }
bool virt() const { return _virt; }
};
#endif
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