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39
40#ifndef QBLITTABLE_P_H
41#define QBLITTABLE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtGui/private/qtguiglobal_p.h>
55#include <QtCore/qsize.h>
56#include <QtGui/private/qpixmap_blitter_p.h>
57
58
59#ifndef QT_NO_BLITTABLE
60QT_BEGIN_NAMESPACE
61
62class QImage;
63class QBlittablePrivate;
64
65class Q_GUI_EXPORT QBlittable
66{
67 Q_DECLARE_PRIVATE(QBlittable)
68public:
69 enum Capability {
70
71 SolidRectCapability = 0x0001,
72 SourcePixmapCapability = 0x0002,
73 SourceOverPixmapCapability = 0x0004,
74 SourceOverScaledPixmapCapability = 0x0008,
75 AlphaFillRectCapability = 0x0010,
76 OpacityPixmapCapability = 0x0020,
77 DrawScaledCachedGlyphsCapability = 0x0040,
78 SubPixelGlyphsCapability = 0x0080,
79 ComplexClipCapability = 0x0100,
80
81 // Internal ones
82 OutlineCapability = 0x0001000
83 };
84 Q_DECLARE_FLAGS (Capabilities, Capability)
85
86 QBlittable(const QSize &size, Capabilities caps);
87 virtual ~QBlittable();
88
89 Capabilities capabilities() const;
90 QSize size() const;
91
92 virtual void fillRect(const QRectF &rect, const QColor &color) = 0;
93 virtual void drawPixmap(const QRectF &rect, const QPixmap &pixmap, const QRectF &subrect) = 0;
94 virtual void alphaFillRect(const QRectF &rect, const QColor &color, QPainter::CompositionMode cmode) {
95 Q_UNUSED(rect);
96 Q_UNUSED(color);
97 Q_UNUSED(cmode);
98 qWarning("Please implement alphaFillRect function in your platform or remove AlphaFillRectCapability from it");
99 }
100 virtual void drawPixmapOpacity(const QRectF &rect, const QPixmap &pixmap, const QRectF &subrect, QPainter::CompositionMode cmode, qreal opacity) {
101 Q_UNUSED(rect);
102 Q_UNUSED(pixmap);
103 Q_UNUSED(subrect);
104 Q_UNUSED(cmode);
105 Q_UNUSED(opacity);
106 qWarning("Please implement drawPixmapOpacity function in your platform or remove OpacityPixmapCapability from it");
107 }
108 virtual bool drawCachedGlyphs(const QPaintEngineState *state, QFontEngine::GlyphFormat glyphFormat, int numGlyphs, const glyph_t *glyphs, const QFixedPoint *positions, QFontEngine *fontEngine) {
109 Q_UNUSED(state);
110 Q_UNUSED(glyphFormat);
111 Q_UNUSED(numGlyphs);
112 Q_UNUSED(glyphs);
113 Q_UNUSED(positions);
114 Q_UNUSED(fontEngine);
115 qWarning("Please implement drawCachedGlyphs function in your platform or remove DrawCachedGlyphsCapability from it");
116 return true;
117 }
118
119
120 QImage *lock();
121 void unlock();
122
123 bool isLocked() const;
124
125protected:
126 virtual QImage *doLock() = 0;
127 virtual void doUnlock() = 0;
128 QBlittablePrivate *d_ptr;
129};
130
131QT_END_NAMESPACE
132#endif //QT_NO_BLITTABLE
133#endif //QBLITTABLE_P_H
134

source code of qtbase/src/gui/painting/qblittable_p.h