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39
40 #ifndef QSTYLE_P_H
41 #define QSTYLE_P_H
42
43 #include "private/qobject_p.h"
44 #include <QtGui/qguiapplication.h>
45 #include <QtWidgets/qstyle.h>
46
47 QT_BEGIN_NAMESPACE
48
49 //
50 // W A R N I N G
51 // -------------
52 //
53 // This file is not part of the Qt API. It exists for the convenience
54 // of qstyle_*.cpp. This header file may change from version to version
55 // without notice, or even be removed.
56 //
57 // We mean it.
58 //
59
60 // Private class
61
62 class QStyle;
63
64 class QStylePrivate: public QObjectPrivate
65 {
Q_DECLARE_PUBLIC(QStyle)66 Q_DECLARE_PUBLIC(QStyle)
67 public:
68 inline QStylePrivate()
69 : layoutSpacingIndex(-1), proxyStyle(nullptr) {}
70
71 static bool useFullScreenForPopup();
72
73 mutable int layoutSpacingIndex;
74 QStyle *proxyStyle;
75 };
76
styleCacheImage(const QSize & size)77 inline QImage styleCacheImage(const QSize &size)
78 {
79 const qreal pixelRatio = qApp->devicePixelRatio();
80 QImage cacheImage = QImage(size * pixelRatio, QImage::Format_ARGB32_Premultiplied);
81 cacheImage.setDevicePixelRatio(pixelRatio);
82 return cacheImage;
83 }
84
styleCachePixmap(const QSize & size)85 inline QPixmap styleCachePixmap(const QSize &size)
86 {
87 const qreal pixelRatio = qApp->devicePixelRatio();
88 QPixmap cachePixmap = QPixmap(size * pixelRatio);
89 cachePixmap.setDevicePixelRatio(pixelRatio);
90 return cachePixmap;
91 }
92
93 #define BEGIN_STYLE_PIXMAPCACHE(a) \
94 QRect rect = option->rect; \
95 QPixmap internalPixmapCache; \
96 QImage imageCache; \
97 QPainter *p = painter; \
98 QString unique = QStyleHelper::uniqueName((a), option, option->rect.size()); \
99 int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \
100 bool doPixmapCache = (!option->rect.isEmpty()) \
101 && ((txType <= QTransform::TxTranslate) || (painter->deviceTransform().type() == QTransform::TxScale)); \
102 if (doPixmapCache && QPixmapCache::find(unique, &internalPixmapCache)) { \
103 painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
104 } else { \
105 if (doPixmapCache) { \
106 rect.setRect(0, 0, option->rect.width(), option->rect.height()); \
107 imageCache = styleCacheImage(option->rect.size()); \
108 imageCache.fill(0); \
109 p = new QPainter(&imageCache); \
110 }
111
112
113
114 #define END_STYLE_PIXMAPCACHE \
115 if (doPixmapCache) { \
116 p->end(); \
117 delete p; \
118 internalPixmapCache = QPixmap::fromImage(imageCache); \
119 painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
120 QPixmapCache::insert(unique, internalPixmapCache); \
121 } \
122 }
123
124 QT_END_NAMESPACE
125
126 #endif //QSTYLE_P_H
127