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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qcanvas.h</h1>
<p>This is the verbatim text of the qcanvas.h include file. It is provided only for illustration; the copyright remains with Trolltech.
<hr>
<pre>
/**********************************************************************
** $Id: qt/qcanvas.h 3.3.8 edited Jan 11 14:46 $
**
** Definition of QCanvas classes
**
** Created : 991211
**
** Copyright (C) 1999-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the canvas module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef QCANVAS_H
#define QCANVAS_H
#ifndef QT_H
#include "qscrollview.h"
#include "qpixmap.h"
#include "qptrlist.h"
#include "qbrush.h"
#include "qpen.h"
#include "qvaluelist.h"
#include "qpointarray.h"
#endif // QT_H
#if !defined( QT_MODULE_CANVAS ) || defined( QT_LICENSE_PROFESSIONAL ) || defined( QT_INTERNAL_CANVAS )
#define QM_EXPORT_CANVAS
#define QM_TEMPLATE_EXTERN_CANVAS
#else
#define QM_EXPORT_CANVAS Q_EXPORT
#define QM_TEMPLATE_EXTERN_CANVAS Q_TEMPLATE_EXTERN
#endif
#ifndef QT_NO_CANVAS
class QCanvasSprite;
class QCanvasPolygonalItem;
class QCanvasRectangle;
class QCanvasPolygon;
class QCanvasEllipse;
class QCanvasText;
class QCanvasLine;
class QCanvasChunk;
class QCanvas;
class QCanvasItem;
class QCanvasView;
class QCanvasPixmap;
#if defined(Q_TEMPLATEDLL) &amp;&amp; ( !defined(Q_CC_BOR) || !defined(QT_MAKEDLL) || defined(Q_EXPORT_TEMPLATES) )
// MOC_SKIP_BEGIN
QM_TEMPLATE_EXTERN_CANVAS template class QM_EXPORT_CANVAS QValueListIterator&lt; QCanvasItem* &gt;;
QM_TEMPLATE_EXTERN_CANVAS template class QM_EXPORT_CANVAS QValueList&lt; QCanvasItem* &gt;;
// MOC_SKIP_END
#endif
class QM_EXPORT_CANVAS QCanvasItemList : public QValueList&lt;QCanvasItem*&gt; {
public:
void sort();
void drawUnique( QPainter&amp; painter );
QCanvasItemList operator+(const QCanvasItemList &amp;l) const;
};
class QCanvasItemExtra;
class QM_EXPORT_CANVAS QCanvasItem : public Qt
{
public:
QCanvasItem(QCanvas* canvas);
virtual ~QCanvasItem();
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 QCanvasItem* ) const=0;
QCanvasItemList collisions(bool exact /* NO DEFAULT */ ) const;
virtual void setCanvas(QCanvas*);
virtual void draw(QPainter&amp;)=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; }
#ifndef QT_NO_COMPAT
bool visible() const
{ return (bool)vis; }
bool selected() const
{ return (bool)sel; }
bool enabled() const
{ return (bool)ena; }
bool active() const
{ return (bool)act; }
#endif
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;
QCanvas* canvas() const
{ return cnv; }
protected:
void update() { changeChunks(); }
private:
// For friendly subclasses...
friend class QCanvasPolygonalItem;
friend class QCanvasSprite;
friend class QCanvasRectangle;
friend class QCanvasPolygon;
friend class QCanvasEllipse;
friend class QCanvasText;
friend class QCanvasLine;
virtual QPointArray chunks() const;
virtual void addToChunks();
virtual void removeFromChunks();
virtual void changeChunks();
virtual bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const = 0;
// End of friend stuff
QCanvas* cnv;
static QCanvas* current_canvas;
double myx,myy,myz;
QCanvasItemExtra *ext;
QCanvasItemExtra&amp; extra();
uint ani:1;
uint vis:1;
uint val:1;
uint sel:1;
uint ena:1;
uint act:1;
};
class QCanvasData;
class QM_EXPORT_CANVAS QCanvas : public QObject
{
Q_OBJECT
public:
QCanvas( QObject* parent = 0, const char* name = 0 );
QCanvas(int w, int h);
QCanvas( QPixmap p, int h, int v, int tilewidth, int tileheight );
virtual ~QCanvas();
virtual void setTiles( QPixmap tiles, int h, int v,
int tilewidth, int tileheight );
virtual void setBackgroundPixmap( const QPixmap&amp; p );
QPixmap backgroundPixmap() const;
virtual void setBackgroundColor( const QColor&amp; 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&gt;=0 &amp;&amp; y&gt;=0 &amp;&amp; x&lt;awidth &amp;&amp; y&lt;aheight; }
bool onCanvas( const QPoint&amp; p ) const
{ return onCanvas(p.x(),p.y()); }
bool validChunk( int x, int y ) const
{ return x&gt;=0 &amp;&amp; y&gt;=0 &amp;&amp; x&lt;chwidth &amp;&amp; y&lt;chheight; }
bool validChunk( const QPoint&amp; 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 &amp;&amp; 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&amp; area);
virtual void setUnchanged(const QRect&amp; area);
// These call setChangedChunk.
void addItemToChunk(QCanvasItem*, int i, int j);
void removeItemFromChunk(QCanvasItem*, int i, int j);
void addItemToChunkContaining(QCanvasItem*, int x, int y);
void removeItemFromChunkContaining(QCanvasItem*, int x, int y);
QCanvasItemList allItems();
QCanvasItemList collisions( const QPoint&amp;) const;
QCanvasItemList collisions( const QRect&amp;) const;
QCanvasItemList collisions( const QPointArray&amp; pa, const QCanvasItem* item,
bool exact) const;
void drawArea(const QRect&amp;, QPainter* p, bool double_buffer=FALSE);
// These are for QCanvasView to call
virtual void addView(QCanvasView*);
virtual void removeView(QCanvasView*);
void drawCanvasArea(const QRect&amp;, QPainter* p=0, bool double_buffer=TRUE);
void drawViewArea( QCanvasView* view, QPainter* p, const QRect&amp; r, bool dbuf );
// These are for QCanvasItem to call
virtual void addItem(QCanvasItem*);
virtual void addAnimation(QCanvasItem*);
virtual void removeItem(QCanvasItem*);
virtual void removeAnimation(QCanvasItem*);
virtual void setAdvancePeriod(int ms);
virtual void setUpdatePeriod(int ms);
virtual void setDoubleBuffering(bool y);
signals:
void resized();
public slots:
virtual void advance();
virtual void update();
protected:
virtual void drawBackground(QPainter&amp;, const QRect&amp; area);
virtual void drawForeground(QPainter&amp;, const QRect&amp; area);
private:
void init(int w, int h, int chunksze=16, int maxclust=100);
QCanvasChunk&amp; chunk(int i, int j) const;
QCanvasChunk&amp; chunkContaining(int x, int y) const;
QRect changeBounds(const QRect&amp; inarea);
void drawChanges(const QRect&amp; inarea);
QPixmap offscr;
int awidth,aheight;
int chunksize;
int maxclusters;
int chwidth,chheight;
QCanvasChunk* chunks;
QCanvasData* 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(QCanvas* c);
#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=
QCanvas( const QCanvas &amp; );
QCanvas &amp;operator=( const QCanvas &amp; );
#endif
};
class QCanvasViewData;
class QM_EXPORT_CANVAS QCanvasView : public QScrollView
{
Q_OBJECT
public:
QCanvasView(QWidget* parent=0, const char* name=0, WFlags f=0);
QCanvasView(QCanvas* viewing, QWidget* parent=0, const char* name=0, WFlags f=0);
~QCanvasView();
QCanvas* canvas() const
{ return viewing; }
void setCanvas(QCanvas* v);
const QWMatrix &amp;worldMatrix() const;
const QWMatrix &amp;inverseWorldMatrix() const;
bool setWorldMatrix( const QWMatrix &amp; );
protected:
void drawContents( QPainter*, int cx, int cy, int cw, int ch );
QSize sizeHint() const;
private:
void drawContents( QPainter* );
QCanvas* viewing;
QCanvasViewData* d;
friend void qt_unview(QCanvas* c);
private slots:
void cMoving(int,int);
void updateContentsSize();
private:
#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=
QCanvasView( const QCanvasView &amp; );
QCanvasView &amp;operator=( const QCanvasView &amp; );
#endif
};
class QM_EXPORT_CANVAS QCanvasPixmap : public QPixmap
{
public:
#ifndef QT_NO_IMAGEIO
QCanvasPixmap(const QString&amp; datafilename);
#endif
QCanvasPixmap(const QImage&amp; image);
QCanvasPixmap(const QPixmap&amp;, const QPoint&amp; hotspot);
~QCanvasPixmap();
int offsetX() const
{ return hotx; }
int offsetY() const
{ return hoty; }
void setOffset(int x, int y) { hotx = x; hoty = y; }
private:
#if defined(Q_DISABLE_COPY)
QCanvasPixmap( const QCanvasPixmap &amp; );
QCanvasPixmap &amp;operator=( const QCanvasPixmap &amp; );
#endif
void init(const QImage&amp;);
void init(const QPixmap&amp; pixmap, int hx, int hy);
friend class QCanvasSprite;
friend class QCanvasPixmapArray;
friend bool qt_testCollision(const QCanvasSprite* s1, const QCanvasSprite* s2);
int hotx,hoty;
QImage* collision_mask;
};
class QM_EXPORT_CANVAS QCanvasPixmapArray
{
public:
QCanvasPixmapArray();
#ifndef QT_NO_IMAGEIO
QCanvasPixmapArray(const QString&amp; datafilenamepattern, int framecount=0);
#endif
// this form is deprecated
QCanvasPixmapArray(QPtrList&lt;QPixmap&gt;, QPtrList&lt;QPoint&gt; hotspots);
QCanvasPixmapArray(QValueList&lt;QPixmap&gt;, QPointArray hotspots = QPointArray() );
~QCanvasPixmapArray();
#ifndef QT_NO_IMAGEIO
bool readPixmaps(const QString&amp; datafilenamepattern, int framecount=0);
bool readCollisionMasks(const QString&amp; filenamepattern);
#endif
// deprecated
bool operator!(); // Failure check.
bool isValid() const;
QCanvasPixmap* image(int i) const
{ return img ? img[i] : 0; }
void setImage(int i, QCanvasPixmap* p);
uint count() const
{ return (uint)framecount; }
private:
#if defined(Q_DISABLE_COPY)
QCanvasPixmapArray( const QCanvasPixmapArray &amp; );
QCanvasPixmapArray &amp;operator=( const QCanvasPixmapArray &amp; );
#endif
#ifndef QT_NO_IMAGEIO
bool readPixmaps(const QString&amp; datafilenamepattern, int framecount, bool maskonly);
#endif
void reset();
int framecount;
QCanvasPixmap** img;
};
class QM_EXPORT_CANVAS QCanvasSprite : public QCanvasItem
{
public:
QCanvasSprite(QCanvasPixmapArray* array, QCanvas* canvas);
void setSequence(QCanvasPixmapArray* seq);
virtual ~QCanvasSprite();
void move(double x, double y);
virtual void move(double x, double y, int frame);
void setFrame(int);
enum FrameAnimationType { Cycle, Oscillate };
virtual void setFrameAnimation(FrameAnimationType=Cycle, int step=1, int state=0);
int frame() const
{ return frm; }
int frameCount() const
{ return images-&gt;count(); }
int rtti() const;
static int RTTI;
bool collidesWith( const QCanvasItem* ) const;
QRect boundingRect() const;
// is there a reason for these to be protected? Lars
//protected:
int width() const;
int height() const;
int leftEdge() const;
int topEdge() const;
int rightEdge() const;
int bottomEdge() const;
int leftEdge(int nx) const;
int topEdge(int ny) const;
int rightEdge(int nx) const;
int bottomEdge(int ny) const;
QCanvasPixmap* image() const
{ return images-&gt;image(frm); }
virtual QCanvasPixmap* imageAdvanced() const;
QCanvasPixmap* image(int f) const
{ return images-&gt;image(f); }
virtual void advance(int stage);
public:
void draw(QPainter&amp; painter);
private:
#if defined(Q_DISABLE_COPY)
QCanvasSprite( const QCanvasSprite &amp; );
QCanvasSprite &amp;operator=( const QCanvasSprite &amp; );
#endif
void addToChunks();
void removeFromChunks();
void changeChunks();
int frm;
ushort anim_val;
uint anim_state:2;
uint anim_type:14;
bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const;
friend bool qt_testCollision( const QCanvasSprite* s1,
const QCanvasSprite* s2 );
QCanvasPixmapArray* images;
};
class QPolygonalProcessor;
class QM_EXPORT_CANVAS QCanvasPolygonalItem : public QCanvasItem
{
public:
QCanvasPolygonalItem(QCanvas* canvas);
virtual ~QCanvasPolygonalItem();
bool collidesWith( const QCanvasItem* ) const;
virtual void setPen(QPen p);
virtual void setBrush(QBrush b);
QPen pen() const
{ return pn; }
QBrush brush() const
{ return br; }
virtual QPointArray areaPoints() const=0;
virtual QPointArray areaPointsAdvanced() const;
QRect boundingRect() const;
int rtti() const;
static int RTTI;
protected:
void draw(QPainter &amp;);
virtual void drawShape(QPainter &amp;) = 0;
bool winding() const;
void setWinding(bool);
void invalidate();
bool isValid() const
{ return (bool)val; }
private:
void scanPolygon( const QPointArray&amp; pa, int winding,
QPolygonalProcessor&amp; process ) const;
QPointArray chunks() const;
bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const;
QBrush br;
QPen pn;
uint wind:1;
};
class QM_EXPORT_CANVAS QCanvasRectangle : public QCanvasPolygonalItem
{
public:
QCanvasRectangle(QCanvas* canvas);
QCanvasRectangle(const QRect&amp;, QCanvas* canvas);
QCanvasRectangle(int x, int y, int width, int height, QCanvas* canvas);
~QCanvasRectangle();
int width() const;
int height() const;
void setSize(int w, int h);
QSize size() const
{ return QSize(w,h); }
QPointArray areaPoints() const;
QRect rect() const
{ return QRect(int(x()),int(y()),w,h); }
bool collidesWith( const QCanvasItem* ) const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &amp;);
QPointArray chunks() const;
private:
bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const;
int w, h;
};
class QM_EXPORT_CANVAS QCanvasPolygon : public QCanvasPolygonalItem
{
public:
QCanvasPolygon(QCanvas* canvas);
~QCanvasPolygon();
void setPoints(QPointArray);
QPointArray points() const;
void moveBy(double dx, double dy);
QPointArray areaPoints() const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &amp;);
QPointArray poly;
};
class QM_EXPORT_CANVAS QCanvasSpline : public QCanvasPolygon
{
public:
QCanvasSpline(QCanvas* canvas);
~QCanvasSpline();
void setControlPoints(QPointArray, bool closed=TRUE);
QPointArray controlPoints() const;
bool closed() const;
int rtti() const;
static int RTTI;
private:
void recalcPoly();
QPointArray bez;
bool cl;
};
class QM_EXPORT_CANVAS QCanvasLine : public QCanvasPolygonalItem
{
public:
QCanvasLine(QCanvas* canvas);
~QCanvasLine();
void setPoints(int x1, int y1, int x2, int y2);
QPoint startPoint() const
{ return QPoint(x1,y1); }
QPoint endPoint() const
{ return QPoint(x2,y2); }
int rtti() const;
static int RTTI;
void setPen(QPen p);
void moveBy(double dx, double dy);
protected:
void drawShape(QPainter &amp;);
QPointArray areaPoints() const;
private:
int x1,y1,x2,y2;
};
class QM_EXPORT_CANVAS QCanvasEllipse : public QCanvasPolygonalItem
{
public:
QCanvasEllipse( QCanvas* canvas );
QCanvasEllipse( int width, int height, QCanvas* canvas );
QCanvasEllipse( int width, int height, int startangle, int angle,
QCanvas* canvas );
~QCanvasEllipse();
int width() const;
int height() const;
void setSize(int w, int h);
void setAngles(int start, int length);
int angleStart() const
{ return a1; }
int angleLength() const
{ return a2; }
QPointArray areaPoints() const;
bool collidesWith( const QCanvasItem* ) const;
int rtti() const;
static int RTTI;
protected:
void drawShape(QPainter &amp;);
private:
bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const;
int w, h;
int a1, a2;
};
class QCanvasTextExtra;
class QM_EXPORT_CANVAS QCanvasText : public QCanvasItem
{
public:
QCanvasText(QCanvas* canvas);
QCanvasText(const QString&amp;, QCanvas* canvas);
QCanvasText(const QString&amp;, QFont, QCanvas* canvas);
virtual ~QCanvasText();
void setText( const QString&amp; );
void setFont( const QFont&amp; );
void setColor( const QColor&amp; );
QString text() const;
QFont font() const;
QColor color() const;
void moveBy(double dx, double dy);
int textFlags() const
{ return flags; }
void setTextFlags(int);
QRect boundingRect() const;
bool collidesWith( const QCanvasItem* ) const;
int rtti() const;
static int RTTI;
protected:
virtual void draw(QPainter&amp;);
private:
#if defined(Q_DISABLE_COPY)
QCanvasText( const QCanvasText &amp; );
QCanvasText &amp;operator=( const QCanvasText &amp; );
#endif
void addToChunks();
void removeFromChunks();
void changeChunks();
void setRect();
QRect brect;
QString txt;
int flags;
QFont fnt;
QColor col;
QCanvasTextExtra* extra;
bool collidesWith( const QCanvasSprite*,
const QCanvasPolygonalItem*,
const QCanvasRectangle*,
const QCanvasEllipse*,
const QCanvasText* ) const;
};
#define Q_DEFINED_QCANVAS
#include "qwinexport.h"
#endif // QT_NO_CANVAS
#endif // QCANVAS_H
</pre>
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<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt 3.3.8</div>
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