summaryrefslogtreecommitdiffstats
path: root/src/gui/painting/qpaintengine_mac_p.h
blob: c9ab4192674ddf8d5b079021d8992f49909e8072 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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_MAC_P_H
#define QPAINTENGINE_MAC_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtGui/qpaintengine.h"
#include "private/qt_mac_p.h"
#include "private/qpaintengine_p.h"
#include "private/qpolygonclipper_p.h"
#include "QtCore/qhash.h"

typedef struct CGColorSpace *CGColorSpaceRef;
QT_BEGIN_NAMESPACE

extern int qt_defaultDpi();
extern int qt_defaultDpiX();
extern int qt_defaultDpiY();

class QCoreGraphicsPaintEnginePrivate;
class QCoreGraphicsPaintEngine : public QPaintEngine
{
    Q_DECLARE_PRIVATE(QCoreGraphicsPaintEngine)

public:
    QCoreGraphicsPaintEngine();
    ~QCoreGraphicsPaintEngine();

    bool begin(QPaintDevice *pdev);
    bool end();
    static CGColorSpaceRef macGenericColorSpace();
    static CGColorSpaceRef macDisplayColorSpace(const QWidget *widget = 0);

    void updateState(const QPaintEngineState &state);

    void updatePen(const QPen &pen);
    void updateBrush(const QBrush &brush, const QPointF &pt);
    void updateFont(const QFont &font);
    void updateOpacity(qreal opacity);
    void updateMatrix(const QTransform &matrix);
    void updateTransform(const QTransform &matrix);
    void updateClipRegion(const QRegion &region, Qt::ClipOperation op);
    void updateClipPath(const QPainterPath &path, Qt::ClipOperation op);
    void updateCompositionMode(QPainter::CompositionMode mode);
    void updateRenderHints(QPainter::RenderHints hints);

    void drawLines(const QLineF *lines, int lineCount);
    void drawRects(const QRectF *rects, int rectCount);
    void drawPoints(const QPointF *p, int pointCount);
    void drawEllipse(const QRectF &r);
    void drawPath(const QPainterPath &path);

    void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
    void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
    void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);

    void drawTextItem(const QPointF &pos, const QTextItem &item);
    void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
                   Qt::ImageConversionFlags flags = Qt::AutoColor);

    Type type() const { return QPaintEngine::CoreGraphics; }

    CGContextRef handle() const;

    static void initialize();
    static void cleanup();

    QPainter::RenderHints supportedRenderHints() const;

    //avoid partial shadowed overload warnings...
    void drawLines(const QLine *lines, int lineCount) { QPaintEngine::drawLines(lines, lineCount); }
    void drawRects(const QRect *rects, int rectCount) { QPaintEngine::drawRects(rects, rectCount); }
    void drawPoints(const QPoint *p, int pointCount) { QPaintEngine::drawPoints(p, pointCount); }
    void drawEllipse(const QRect &r) { QPaintEngine::drawEllipse(r); }
    void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode)
    { QPaintEngine::drawPolygon(points, pointCount, mode); }

protected:
    friend class QMacPrintEngine;
    friend class QMacPrintEnginePrivate;
    friend void qt_mac_display_change_callbk(CGDirectDisplayID, CGDisplayChangeSummaryFlags, void *);
    friend void qt_color_profile_changed(CFNotificationCenterRef center, void *,
                                         CFStringRef , const void *, CFDictionaryRef);
    QCoreGraphicsPaintEngine(QPaintEnginePrivate &dptr);

private:
    static bool m_postRoutineRegistered;
    static CGColorSpaceRef m_genericColorSpace;
    static QHash<CGDirectDisplayID, CGColorSpaceRef> m_displayColorSpaceHash;
    static void cleanUpMacColorSpaces();
    Q_DISABLE_COPY(QCoreGraphicsPaintEngine)
};

/*****************************************************************************
  Private data
 *****************************************************************************/
class QCoreGraphicsPaintEnginePrivate : public QPaintEnginePrivate
{
    Q_DECLARE_PUBLIC(QCoreGraphicsPaintEngine)
public:
    QCoreGraphicsPaintEnginePrivate()
        : hd(0), shading(0), stackCount(0), complexXForm(false)
    {
    }

    struct {
        QPen pen;
        QBrush brush;
        uint clipEnabled : 1;
        QRegion clip;
        QTransform transform;
   } current;

    //state info (shared with QD)
    CGAffineTransform orig_xform;

    //cg structures
    CGContextRef hd;
    CGShadingRef shading;
    int stackCount;
    bool complexXForm;
    enum { CosmeticNone, CosmeticTransformPath, CosmeticSetPenWidth } cosmeticPen;

    // pixel and cosmetic pen size in user coordinates.
    QPointF pixelSize;
    float cosmeticPenSize;

    //internal functions
    enum { CGStroke=0x01, CGEOFill=0x02, CGFill=0x04 };
    void drawPath(uchar ops, CGMutablePathRef path = 0);
    void setClip(const QRegion *rgn=0);
    void resetClip();
    void setFillBrush(const QPointF &origin=QPoint());
    void setStrokePen(const QPen &pen);
    inline void saveGraphicsState();
    inline void restoreGraphicsState();
    float penOffset();
    QPointF devicePixelSize(CGContextRef context);
    float adjustPenWidth(float penWidth);
    inline void setTransform(const QTransform *matrix=0)
    {
        CGContextConcatCTM(hd, CGAffineTransformInvert(CGContextGetCTM(hd)));
        CGAffineTransform xform = orig_xform;
        if(matrix) {
            extern CGAffineTransform qt_mac_convert_transform_to_cg(const QTransform &);
            xform = CGAffineTransformConcat(qt_mac_convert_transform_to_cg(*matrix), xform);
        }
        CGContextConcatCTM(hd, xform);
        CGContextSetTextMatrix(hd, xform);
    }
};

inline void QCoreGraphicsPaintEnginePrivate::saveGraphicsState()
{
    ++stackCount;
    CGContextSaveGState(hd);
}

inline void QCoreGraphicsPaintEnginePrivate::restoreGraphicsState()
{
    --stackCount;
    Q_ASSERT(stackCount >= 0);
    CGContextRestoreGState(hd);
}

class QMacQuartzPaintDevice : public QPaintDevice
{
public:
    QMacQuartzPaintDevice(CGContextRef cg, int width, int height, int bytesPerLine)
        : mCG(cg), mWidth(width), mHeight(height), mBytesPerLine(bytesPerLine)
    { }
    int devType() const { return QInternal::MacQuartz; }
    CGContextRef cgContext() const { return mCG; }
    int metric(PaintDeviceMetric metric) const {
        switch (metric) {
        case PdmWidth:
            return mWidth;
        case PdmHeight:
            return mHeight;
        case PdmWidthMM:
            return (qt_defaultDpiX() * mWidth) / 2.54;
        case PdmHeightMM:
            return (qt_defaultDpiY() * mHeight) / 2.54;
        case PdmNumColors:
            return 0;
        case PdmDepth:
            return 32;
        case PdmDpiX:
        case PdmPhysicalDpiX:
            return qt_defaultDpiX();
        case PdmDpiY:
        case PdmPhysicalDpiY:
            return qt_defaultDpiY();
        }
        return 0;
    }
    QPaintEngine *paintEngine() const { qWarning("This function should never be called."); return 0; }
private:
    CGContextRef mCG;
    int mWidth;
    int mHeight;
    int mBytesPerLine;
};

QT_END_NAMESPACE

#endif // QPAINTENGINE_MAC_P_H