q3canvas.h

奇趣公司比较新的qt/emd版本

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#ifndef Q3CANVAS_H
#define Q3CANVAS_H

#include <Qt3Support/q3scrollview.h>
#include <QtGui/qpixmap.h>
#include <Qt3Support/q3ptrlist.h>
#include <QtGui/qbrush.h>
#include <QtGui/qpen.h>
#include <Qt3Support/q3valuelist.h>
#include <Qt3Support/q3pointarray.h>

QT_BEGIN_HEADER

QT_MODULE(Qt3Support)

class Q3CanvasSprite;
class Q3CanvasPolygonalItem;
class Q3CanvasRectangle;
class Q3CanvasPolygon;
class Q3CanvasEllipse;
class Q3CanvasText;
class Q3CanvasLine;
class Q3CanvasChunk;
class Q3Canvas;
class Q3CanvasItem;
class Q3CanvasView;
class Q3CanvasPixmap;

class Q_COMPAT_EXPORT Q3CanvasItemList : public Q3ValueList<Q3CanvasItem*> {
public:
    void sort();
    void drawUnique(QPainter& painter);
    Q3CanvasItemList operator+(const Q3CanvasItemList &l) const;
};


class Q3CanvasItemExtra;

class Q_COMPAT_EXPORT Q3CanvasItem
{
public:
    Q3CanvasItem(Q3Canvas* canvas);
    virtual ~Q3CanvasItem();

    double x() const
	{ return myx; }
    double y() const
	{ return myy; }
    double z() const
	{ return myz; } // (depth)

    virtual void moveBy(double dx, double dy);
    void move(double x, double y);
    void setX(double a) { move(a,y()); }
    void setY(double a) { move(x(),a); }
    void setZ(double a) { myz=a; changeChunks(); }

    bool animated() const;
    virtual void setAnimated(bool y);
    virtual void setVelocity(double vx, double vy);
    void setXVelocity(double vx) { setVelocity(vx,yVelocity()); }
    void setYVelocity(double vy) { setVelocity(xVelocity(),vy); }
    double xVelocity() const;
    double yVelocity() const;
    virtual void advance(int stage);

    virtual bool collidesWith(const Q3CanvasItem*) const=0;

    Q3CanvasItemList collisions(bool exact /* NO DEFAULT */) const;

    virtual void setCanvas(Q3Canvas*);

    virtual void draw(QPainter&)=0;

    void show();
    void hide();

    virtual void setVisible(bool yes);
    bool isVisible() const
	{ return (bool)vis; }
    virtual void setSelected(bool yes);
    bool isSelected() const
	{ return (bool)sel; }
    virtual void setEnabled(bool yes);
    bool isEnabled() const
	{ return (bool)ena; }
    virtual void setActive(bool yes);
    bool isActive() const
	{ return (bool)act; }
    bool visible() const
	{ return (bool)vis; }
    bool selected() const
	{ return (bool)sel; }
    bool enabled() const
	{ return (bool)ena; }
    bool active() const
	{ return (bool)act; }

    enum RttiValues {
	Rtti_Item = 0,
	Rtti_Sprite = 1,
	Rtti_PolygonalItem = 2,
	Rtti_Text = 3,
	Rtti_Polygon = 4,
	Rtti_Rectangle = 5,
	Rtti_Ellipse = 6,
	Rtti_Line = 7,
	Rtti_Spline = 8
    };

    virtual int rtti() const;
    static int RTTI;

    virtual QRect boundingRect() const=0;
    virtual QRect boundingRectAdvanced() const;

    Q3Canvas* canvas() const
	{ return cnv; }

protected:
    void update() { changeChunks(); }

private:
    // For friendly subclasses...

    friend class Q3CanvasPolygonalItem;
    friend class Q3CanvasSprite;
    friend class Q3CanvasRectangle;
    friend class Q3CanvasPolygon;
    friend class Q3CanvasEllipse;
    friend class Q3CanvasText;
    friend class Q3CanvasLine;

    virtual Q3PointArray chunks() const;
    virtual void addToChunks();
    virtual void removeFromChunks();
    virtual void changeChunks();
    virtual bool collidesWith(const Q3CanvasSprite*,
			       const Q3CanvasPolygonalItem*,
			       const Q3CanvasRectangle*,
			       const Q3CanvasEllipse*,
			       const Q3CanvasText*) const = 0;
    // End of friend stuff

    Q3Canvas* cnv;
    static Q3Canvas* current_canvas;
    double myx,myy,myz;
    Q3CanvasItemExtra *ext;
    Q3CanvasItemExtra& extra();
    uint ani:1;
    uint vis:1;
    uint val:1;
    uint sel:1;
    uint ena:1;
    uint act:1;
};


class Q3CanvasData;

class Q_COMPAT_EXPORT Q3Canvas : public QObject
{
    Q_OBJECT
public:
    Q3Canvas(QObject* parent = 0, const char* name = 0);
    Q3Canvas(int w, int h);
    Q3Canvas(QPixmap p, int h, int v, int tilewidth, int tileheight);

    virtual ~Q3Canvas();

    virtual void setTiles(QPixmap tiles, int h, int v,
			   int tilewidth, int tileheight);
    virtual void setBackgroundPixmap(const QPixmap& p);
    QPixmap backgroundPixmap() const;

    virtual void setBackgroundColor(const QColor& c);
    QColor backgroundColor() const;

    virtual void setTile(int x, int y, int tilenum);
    int tile(int x, int y) const
	{ return grid[x+y*htiles]; }

    int tilesHorizontally() const
	{ return htiles; }
    int tilesVertically() const
	{ return vtiles; }

    int tileWidth() const
	{ return tilew; }
    int tileHeight() const
	{ return tileh; }

    virtual void resize(int width, int height);
    int width() const
	{ return awidth; }
    int height() const
	{ return aheight; }
    QSize size() const
	{ return QSize(awidth,aheight); }
    QRect rect() const
	{ return QRect(0, 0, awidth, aheight); }
    bool onCanvas(int x, int y) const
	{ return x>=0 && y>=0 && x<awidth && y<aheight; }
    bool onCanvas(const QPoint& p) const
	{ return onCanvas(p.x(),p.y()); }
    bool validChunk(int x, int y) const
	{ return x>=0 && y>=0 && x<chwidth && y<chheight; }
    bool validChunk(const QPoint& p) const
	{ return validChunk(p.x(),p.y()); }

    int chunkSize() const
	{ return chunksize; }
    virtual void retune(int chunksize, int maxclusters=100);

    bool sameChunk(int x1, int y1, int x2, int y2) const
	{ return x1/chunksize==x2/chunksize && y1/chunksize==y2/chunksize; }
    virtual void setChangedChunk(int i, int j);
    virtual void setChangedChunkContaining(int x, int y);
    virtual void setAllChanged();
    virtual void setChanged(const QRect& area);
    virtual void setUnchanged(const QRect& area);

    // These call setChangedChunk.
    void addItemToChunk(Q3CanvasItem*, int i, int j);
    void removeItemFromChunk(Q3CanvasItem*, int i, int j);
    void addItemToChunkContaining(Q3CanvasItem*, int x, int y);
    void removeItemFromChunkContaining(Q3CanvasItem*, int x, int y);

    Q3CanvasItemList allItems();
    Q3CanvasItemList collisions(const QPoint&) const;
    Q3CanvasItemList collisions(const QRect&) const;
    Q3CanvasItemList collisions(const Q3PointArray& pa, const Q3CanvasItem* item,
				bool exact) const;

    void drawArea(const QRect&, QPainter* p, bool double_buffer=false);

    // These are for Q3CanvasView to call
    virtual void addView(Q3CanvasView*);
    virtual void removeView(Q3CanvasView*);
    void drawCanvasArea(const QRect&, QPainter* p=0, bool double_buffer=true);
    void drawViewArea(Q3CanvasView* view, QPainter* p, const QRect& r, bool dbuf);

    // These are for Q3CanvasItem to call
    virtual void addItem(Q3CanvasItem*);
    virtual void addAnimation(Q3CanvasItem*);
    virtual void removeItem(Q3CanvasItem*);
    virtual void removeAnimation(Q3CanvasItem*);

    virtual void setAdvancePeriod(int ms);
    virtual void setUpdatePeriod(int ms);

    virtual void setDoubleBuffering(bool y);

Q_SIGNALS:
    void resized();

public Q_SLOTS:
    virtual void advance();
    virtual void update();

protected:
    virtual void drawBackground(QPainter&, const QRect& area);
    virtual void drawForeground(QPainter&, const QRect& area);

private:
    void init(int w, int h, int chunksze=16, int maxclust=100);

    Q3CanvasChunk& chunk(int i, int j) const;
    Q3CanvasChunk& chunkContaining(int x, int y) const;

    QRect changeBounds(const QRect& inarea);

    void ensureOffScrSize(int osw, int osh);
    QPixmap offscr;
    int awidth,aheight;
    int chunksize;
    int maxclusters;
    int chwidth,chheight;
    Q3CanvasChunk* chunks;

    Q3CanvasData* d;

    void initTiles(QPixmap p, int h, int v, int tilewidth, int tileheight);
    ushort *grid;
    ushort htiles;
    ushort vtiles;
    ushort tilew;
    ushort tileh;
    bool oneone;
    QPixmap pm;
    QTimer* update_timer;
    QColor bgcolor;
    bool debug_redraw_areas;
    bool dblbuf;

    friend void qt_unview(Q3Canvas* c);

    Q_DISABLE_COPY(Q3Canvas)
};

class Q3CanvasViewData;

class Q_COMPAT_EXPORT Q3CanvasView : public Q3ScrollView
{
    Q_OBJECT
public:

    Q3CanvasView(QWidget* parent=0, const char* name=0, Qt::WindowFlags f=0);
    Q3CanvasView(Q3Canvas* viewing, QWidget* parent=0, const char* name=0, Qt::WindowFlags f=0);
    ~Q3CanvasView();

    Q3Canvas* canvas() const
	{ return viewing; }
    void setCanvas(Q3Canvas* v);

    const QMatrix &worldMatrix() const;
    const QMatrix &inverseWorldMatrix() const;
    bool setWorldMatrix(const QMatrix &);

protected:
    void drawContents(QPainter *p, int cx, int cy, int cw, int ch);
    QSize sizeHint() const;

private:
    friend class Q3Canvas;
    void drawContents(QPainter*);
    Q3Canvas* viewing;
    Q3CanvasViewData* d;
    friend void qt_unview(Q3Canvas* c);

private Q_SLOTS:
    void updateContentsSize();

private:
    Q_DISABLE_COPY(Q3CanvasView)
};


class Q_COMPAT_EXPORT Q3CanvasPixmap : public QPixmap
{
public:
#ifndef QT_NO_IMAGEIO
    Q3CanvasPixmap(const QString& datafilename);
#endif
    Q3CanvasPixmap(const QImage& image);
    Q3CanvasPixmap(const QPixmap&, const QPoint& hotspot);
    ~Q3CanvasPixmap();

    int offsetX() const
	{ return hotx; }
    int offsetY() const
	{ return hoty; }
    void setOffset(int x, int y) { hotx = x; hoty = y; }