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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPAINTENGINE_RASTER_P_H
#define QPAINTENGINE_RASTER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "private/qpaintengineex_p.h"
#include "QtGui/qpainterpath.h"
#include "private/qdatabuffer_p.h"
#include "private/qdrawhelper_p.h"
#include "private/qpaintengine_p.h"
#include "private/qrasterizer_p.h"
#include "private/qstroker_p.h"
#include "private/qpainter_p.h"
#include "private/qtextureglyphcache_p.h"
#include <stdlib.h>
QT_BEGIN_NAMESPACE
class QOutlineMapper;
class QRasterPaintEnginePrivate;
class QRasterBuffer;
class QClipData;
class QCustomRasterPaintDevice;
class QRasterPaintEngineState : public QPainterState
{
public:
QRasterPaintEngineState(QRasterPaintEngineState &other);
QRasterPaintEngineState();
~QRasterPaintEngineState();
QPen lastPen;
QSpanData penData;
QStrokerOps *stroker;
uint strokeFlags;
QBrush lastBrush;
QSpanData brushData;
uint fillFlags;
uint pixmapFlags;
int intOpacity;
qreal txscale;
QClipData *clip;
// QRect clipRect;
// QRegion clipRegion;
// QPainter::RenderHints hints;
// QPainter::CompositionMode compositionMode;
uint dirty;
struct Flags {
uint has_clip_ownership : 1; // should delete the clip member..
uint fast_pen : 1; // cosmetic 1-width pens, using midpoint drawlines
uint non_complex_pen : 1; // can use rasterizer, rather than stroker
uint antialiased : 1;
uint bilinear : 1;
uint fast_text : 1;
uint int_xform : 1;
uint tx_noshear : 1;
uint fast_images : 1;
};
union {
Flags flags;
uint flag_bits;
};
};
/*******************************************************************************
* QRasterPaintEngine
*/
class
#ifdef Q_WS_QWS
Q_GUI_EXPORT
#endif
QRasterPaintEngine : public QPaintEngineEx
{
Q_DECLARE_PRIVATE(QRasterPaintEngine)
public:
QRasterPaintEngine(QPaintDevice *device);
~QRasterPaintEngine();
bool begin(QPaintDevice *device);
bool end();
void penChanged();
void brushChanged();
void brushOriginChanged();
void opacityChanged();
void compositionModeChanged();
void renderHintsChanged();
void transformChanged();
void clipEnabledChanged();
void setState(QPainterState *s);
QPainterState *createState(QPainterState *orig) const;
inline QRasterPaintEngineState *state() {
return static_cast<QRasterPaintEngineState *>(QPaintEngineEx::state());
}
inline const QRasterPaintEngineState *state() const {
return static_cast<const QRasterPaintEngineState *>(QPaintEngineEx::state());
}
void updateBrush(const QBrush &brush);
void updatePen(const QPen &pen);
void updateMatrix(const QTransform &matrix);
void drawPath(const QPainterPath &path);
void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);
void fillPath(const QPainterPath &path, QSpanData *fillData);
void fillPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
void drawEllipse(const QRectF &rect);
void fillRect(const QRectF &rect, const QBrush &brush);
void fillRect(const QRectF &rect, const QColor &color);
void drawRects(const QRect *rects, int rectCount);
void drawRects(const QRectF *rects, int rectCount);
void drawPixmap(const QPointF &p, const QPixmap &pm);
void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
void drawImage(const QPointF &p, const QImage &img);
void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
Qt::ImageConversionFlags falgs = Qt::AutoColor);
void drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &sr);
void drawTextItem(const QPointF &p, const QTextItem &textItem);
void drawLines(const QLine *line, int lineCount);
void drawLines(const QLineF *line, int lineCount);
void drawPoints(const QPointF *points, int pointCount);
void drawPoints(const QPoint *points, int pointCount);
void stroke(const QVectorPath &path, const QPen &pen);
void fill(const QVectorPath &path, const QBrush &brush);
void strokePolygonCosmetic(const QPoint *pts, int pointCount, PolygonDrawMode mode);
void strokePolygonCosmetic(const QPointF *pt, int pointCount, PolygonDrawMode mode);
void clip(const QVectorPath &path, Qt::ClipOperation op);
void clip(const QRect &rect, Qt::ClipOperation op);
void clip(const QRegion ®ion, Qt::ClipOperation op);
void clip(const QPainterPath &path, Qt::ClipOperation op);
enum ClipType {
RectClip,
ComplexClip
};
ClipType clipType() const;
QRect clipBoundingRect() const;
#ifdef Q_NO_USING_KEYWORD
inline void drawEllipse(const QRect &rect) { QPaintEngineEx::drawEllipse(rect); }
#else
using QPaintEngineEx::drawPolygon;
using QPaintEngineEx::drawEllipse;
#endif
void releaseBuffer();
QSize size() const;
#ifndef QT_NO_DEBUG
void saveBuffer(const QString &s) const;
#endif
#ifdef Q_WS_MAC
void setCGContext(CGContextRef ref);
CGContextRef getCGContext() const;
#endif
#ifdef Q_WS_WIN
void setDC(HDC hdc);
HDC getDC() const;
void releaseDC(HDC hdc) const;
#endif
void alphaPenBlt(const void* src, int bpl, int depth, int rx,int ry,int w,int h);
Type type() const { return Raster; }
QPoint coordinateOffset() const;
#if defined(Q_WS_QWS) && !defined(QT_NO_RASTERCALLBACKS)
virtual void drawColorSpans(const QSpan *spans, int count, uint color);
virtual void drawBufferSpan(const uint *buffer, int bufsize,
int x, int y, int length, uint const_alpha);
#endif
protected:
QRasterPaintEngine(QRasterPaintEnginePrivate &d, QPaintDevice *);
private:
friend struct QSpanData;
void init();
void fillRect(const QRectF &rect, QSpanData *data);
void drawBitmap(const QPointF &pos, const QImage &image, QSpanData *fill);
void drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti);
inline void ensureBrush(const QBrush &brush) {
if (!qbrush_fast_equals(state()->lastBrush, brush) || state()->fillFlags)
updateBrush(brush);
}
inline void ensureBrush() { ensureBrush(state()->brush); }
inline void ensurePen(const QPen &pen) {
if (!qpen_fast_equals(state()->lastPen, pen) || state()->strokeFlags)
updatePen(pen);
}
inline void ensurePen() { ensurePen(state()->pen); }
void updateOutlineMapper();
inline void ensureOutlineMapper();
void updateState();
inline void ensureState() {
if (state()->dirty)
updateState();
}
};
/*******************************************************************************
* QRasterPaintEnginePrivate
*/
class
#ifdef Q_WS_QWS
Q_GUI_EXPORT
#endif
QRasterPaintEnginePrivate : public QPaintEngineExPrivate
{
Q_DECLARE_PUBLIC(QRasterPaintEngine)
public:
void rasterizeLine_dashed(QLineF line, qreal width,
int *dashIndex, qreal *dashOffset, bool *inDash);
void rasterize(QT_FT_Outline *outline, ProcessSpans callback, QSpanData *spanData, QRasterBuffer *rasterBuffer);
void rasterize(QT_FT_Outline *outline, ProcessSpans callback, void *userData, QRasterBuffer *rasterBuffer);
void updateMatrixData(QSpanData *spanData, const QBrush &brush, const QTransform &brushMatrix);
void systemStateChanged();
void drawImage(const QPointF &pt, const QImage &img, SrcOverBlendFunc func,
const QRect &clip, int alpha, const QRect &sr = QRect());
QTransform brushMatrix() const {
Q_Q(const QRasterPaintEngine);
const QRasterPaintEngineState *s = q->state();
QTransform m(s->matrix);
m.translate(s->brushOrigin.x(), s->brushOrigin.y());
return m;
}
bool isUnclipped_normalized(const QRect &rect) const;
bool isUnclipped(const QRect &rect, int penWidth) const;
bool isUnclipped(const QRectF &rect, int penWidth) const;
ProcessSpans getPenFunc(const QRect &rect, const QSpanData *data) const;
ProcessSpans getPenFunc(const QRectF &rect, const QSpanData *data) const;
ProcessSpans getBrushFunc(const QRect &rect, const QSpanData *data) const;
ProcessSpans getBrushFunc(const QRectF &rect, const QSpanData *data) const;
#ifdef Q_WS_QWS
void prepare(QCustomRasterPaintDevice *);
#endif
inline const QClipData *clip() const;
void strokeProjective(const QPainterPath &path);
void initializeRasterizer(QSpanData *data);
void recalculateFastImages();
QPaintDevice *device;
QOutlineMapper *outlineMapper;
QRasterBuffer *rasterBuffer;
#if defined (Q_WS_WIN)
HDC hdc;
#elif defined(Q_WS_MAC)
CGContextRef cgContext;
#endif
QRect deviceRect;
QStroker basicStroker;
QDashStroker *dashStroker;
QT_FT_Raster *grayRaster;
unsigned long rasterPoolSize;
unsigned char *rasterPoolBase;
QDataBuffer<QLineF> cachedLines;
QSpanData image_filler;
QSpanData image_filler_xform;
QSpanData solid_color_filler;
QFontEngineGlyphCache::Type glyphCacheType;
QClipData *baseClip;
int deviceDepth;
uint mono_surface : 1;
uint outlinemapper_xform_dirty : 1;
#ifdef Q_WS_WIN
uint isPlain45DegreeRotation : 1;
#endif
QRasterizer *rasterizer;
};
class QClipData {
public:
QClipData(int height);
~QClipData();
int clipSpanHeight;
struct ClipLine {
int count;
QSpan *spans;
} *m_clipLines;
void initialize();
inline ClipLine *clipLines() {
if (!m_clipLines)
initialize();
return m_clipLines;
}
inline QSpan *spans() {
if (!m_spans)
initialize();
return m_spans;
}
int allocated;
int count;
QSpan *m_spans;
int xmin, xmax, ymin, ymax;
QRect clipRect;
QRegion clipRegion;
uint enabled : 1;
uint hasRectClip : 1;
uint hasRegionClip : 1;
void appendSpan(int x, int length, int y, int coverage);
void appendSpans(const QSpan *s, int num);
// ### Should optimize and actually kill the QSpans if the rect is
// ### a subset of The current region. Thus the "fast" clipspan
// ### callback can be used
void setClipRect(const QRect &rect);
void setClipRegion(const QRegion ®ion);
void fixup();
};
inline void QClipData::appendSpan(int x, int length, int y, int coverage)
{
Q_ASSERT(m_spans); // initialize() has to be called prior to adding spans..
if (count == allocated) {
allocated *= 2;
m_spans = (QSpan *)realloc(m_spans, allocated*sizeof(QSpan));
}
m_spans[count].x = x;
m_spans[count].len = length;
m_spans[count].y = y;
m_spans[count].coverage = coverage;
++count;
}
inline void QClipData::appendSpans(const QSpan *s, int num)
{
Q_ASSERT(m_spans);
if (count + num > allocated) {
do {
allocated *= 2;
} while (count + num > allocated);
m_spans = (QSpan *)realloc(m_spans, allocated*sizeof(QSpan));
}
memcpy(m_spans+count, s, num*sizeof(QSpan));
count += num;
}
#ifdef Q_WS_QWS
class Q_GUI_EXPORT QCustomRasterPaintDevice : public QPaintDevice
{
public:
QCustomRasterPaintDevice(QWidget *w) : widget(w) {}
int devType() const { return QInternal::CustomRaster; }
virtual int metric(PaintDeviceMetric m) const;
virtual void* memory() const { return 0; }
virtual QImage::Format format() const {
return QImage::Format_ARGB32_Premultiplied;
}
virtual int bytesPerLine() const;
virtual QSize size() const {
return static_cast<QRasterPaintEngine*>(paintEngine())->size();
}
private:
QWidget *widget;
};
#endif // Q_WS_QWS
/*******************************************************************************
* QRasterBuffer
*/
class QRasterBuffer
{
public:
QRasterBuffer() : m_width(0), m_height(0), m_buffer(0) { init(); }
~QRasterBuffer();
void init();
QImage::Format prepare(QImage *image);
QImage::Format prepare(QPixmap *pix);
#ifdef Q_WS_QWS
void prepare(QCustomRasterPaintDevice *device);
#endif
void prepare(int w, int h);
void prepareBuffer(int w, int h);
void resetBuffer(int val=0);
uchar *scanLine(int y) { Q_ASSERT(y>=0); Q_ASSERT(y<m_height); return m_buffer + y * bytes_per_line; }
#ifndef QT_NO_DEBUG
QImage bufferImage() const;
#endif
void flushToARGBImage(QImage *image) const;
int width() const { return m_width; }
int height() const { return m_height; }
int bytesPerLine() const { return bytes_per_line; }
int bytesPerPixel() const { return bytes_per_pixel; }
uchar *buffer() const { return m_buffer; }
bool monoDestinationWithClut;
QRgb destColor0;
QRgb destColor1;
QPainter::CompositionMode compositionMode;
QImage::Format format;
DrawHelper *drawHelper;
QImage colorizeBitmap(const QImage &image, const QColor &color);
private:
int m_width;
int m_height;
int bytes_per_line;
int bytes_per_pixel;
uchar *m_buffer;
};
inline void QRasterPaintEngine::ensureOutlineMapper() {
if (d_func()->outlinemapper_xform_dirty)
updateOutlineMapper();
}
inline const QClipData *QRasterPaintEnginePrivate::clip() const {
Q_Q(const QRasterPaintEngine);
if (q->state() && q->state()->clip && q->state()->clip->enabled)
return q->state()->clip;
return baseClip;
}
QT_END_NAMESPACE
#endif // QPAINTENGINE_RASTER_P_H
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