Qt 4.8
qstyle_p.h
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41 
42 #ifndef QSTYLE_P_H
43 #define QSTYLE_P_H
44 
45 #include "private/qobject_p.h"
46 #include <QtGui/qstyle.h>
47 
49 
50 //
51 // W A R N I N G
52 // -------------
53 //
54 // This file is not part of the Qt API. It exists for the convenience
55 // of qstyle_*.cpp. This header file may change from version to version
56 // without notice, or even be removed.
57 //
58 // We mean it.
59 //
60 
61 // Private class
62 
63 class QStyle;
64 
66 {
68 public:
69  inline QStylePrivate()
70  : layoutSpacingIndex(-1), proxyStyle(0) {}
71  mutable int layoutSpacingIndex;
73 };
74 
75 
76 #define BEGIN_STYLE_PIXMAPCACHE(a) \
77  QRect rect = option->rect; \
78  QPixmap internalPixmapCache; \
79  QImage imageCache; \
80  QPainter *p = painter; \
81  QString unique = QStyleHelper::uniqueName((a), option, option->rect.size()); \
82  int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \
83  bool doPixmapCache = txType <= QTransform::TxTranslate; \
84  if (doPixmapCache && QPixmapCache::find(unique, internalPixmapCache)) { \
85  painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
86  } else { \
87  if (doPixmapCache) { \
88  rect.setRect(0, 0, option->rect.width(), option->rect.height()); \
89  imageCache = QImage(option->rect.size(), QImage::Format_ARGB32_Premultiplied); \
90  imageCache.fill(0); \
91  p = new QPainter(&imageCache); \
92  }
93 
94 
95 
96 #define END_STYLE_PIXMAPCACHE \
97  if (doPixmapCache) { \
98  p->end(); \
99  delete p; \
100  internalPixmapCache = QPixmap::fromImage(imageCache); \
101  painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
102  QPixmapCache::insert(unique, internalPixmapCache); \
103  } \
104  }
105 
107 
108 #endif //QSTYLE_P_H
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
int layoutSpacingIndex
Definition: qstyle_p.h:71
QStyle * proxyStyle
Definition: qstyle_p.h:72
#define Q_DECLARE_PUBLIC(Class)
Definition: qglobal.h:2477
The QStyle class is an abstract base class that encapsulates the look and feel of a GUI...
Definition: qstyle.h:68