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40****************************************************************************/
41
42#ifndef QPAINTDEVICE_H
43#define QPAINTDEVICE_H
44
45#include <QtGui/qwindowdefs.h>
46#include <QtCore/qrect.h>
47
48QT_BEGIN_HEADER
49
50QT_BEGIN_NAMESPACE
51
52QT_MODULE(Gui)
53
54#if defined(Q_WS_QWS)
55class QWSDisplay;
56#endif
57
58class QPaintEngine;
59
60class Q_GUI_EXPORT QPaintDevice // device for QPainter
61{
62public:
63 enum PaintDeviceMetric {
64 PdmWidth = 1,
65 PdmHeight,
66 PdmWidthMM,
67 PdmHeightMM,
68 PdmNumColors,
69 PdmDepth,
70 PdmDpiX,
71 PdmDpiY,
72 PdmPhysicalDpiX,
73 PdmPhysicalDpiY
74 };
75
76 virtual ~QPaintDevice();
77
78 virtual int devType() const;
79 bool paintingActive() const;
80 virtual QPaintEngine *paintEngine() const = 0;
81
82#if defined(Q_WS_QWS)
83 static QWSDisplay *qwsDisplay();
84#endif
85
86#ifdef Q_WS_WIN
87 virtual HDC getDC() const;
88 virtual void releaseDC(HDC hdc) const;
89#endif
90
91 int width() const { return metric(PdmWidth); }
92 int height() const { return metric(PdmHeight); }
93 int widthMM() const { return metric(PdmWidthMM); }
94 int heightMM() const { return metric(PdmHeightMM); }
95 int logicalDpiX() const { return metric(PdmDpiX); }
96 int logicalDpiY() const { return metric(PdmDpiY); }
97 int physicalDpiX() const { return metric(PdmPhysicalDpiX); }
98 int physicalDpiY() const { return metric(PdmPhysicalDpiY); }
99#ifdef QT_DEPRECATED
100 QT_DEPRECATED int numColors() const { return metric(PdmNumColors); }
101#endif
102 int colorCount() const { return metric(PdmNumColors); }
103 int depth() const { return metric(PdmDepth); }
104
105protected:
106 QPaintDevice();
107 virtual int metric(PaintDeviceMetric metric) const;
108
109 ushort painters; // refcount
110
111private:
112 Q_DISABLE_COPY(QPaintDevice)
113
114#if defined(Q_WS_X11) && defined(QT3_SUPPORT)
115public:
116 QT3_SUPPORT Display *x11Display() const;
117 QT3_SUPPORT int x11Screen() const;
118 QT3_SUPPORT int x11Depth() const;
119 QT3_SUPPORT int x11Cells() const;
120 QT3_SUPPORT Qt::HANDLE x11Colormap() const;
121 QT3_SUPPORT bool x11DefaultColormap() const;
122 QT3_SUPPORT void *x11Visual() const;
123 QT3_SUPPORT bool x11DefaultVisual() const;
124
125 static QT3_SUPPORT Display *x11AppDisplay();
126 static QT3_SUPPORT int x11AppScreen();
127 static QT3_SUPPORT int x11AppDepth(int screen = -1);
128 static QT3_SUPPORT int x11AppCells(int screen = -1);
129 static QT3_SUPPORT Qt::HANDLE x11AppRootWindow(int screen = -1);
130 static QT3_SUPPORT Qt::HANDLE x11AppColormap(int screen = -1);
131 static QT3_SUPPORT void *x11AppVisual(int screen = -1);
132 static QT3_SUPPORT bool x11AppDefaultColormap(int screen =-1);
133 static QT3_SUPPORT bool x11AppDefaultVisual(int screen =-1);
134 static QT3_SUPPORT int x11AppDpiX(int screen = -1);
135 static QT3_SUPPORT int x11AppDpiY(int screen = -1);
136 static QT3_SUPPORT void x11SetAppDpiX(int, int);
137 static QT3_SUPPORT void x11SetAppDpiY(int, int);
138#endif
139
140 friend class QPainter;
141 friend class QFontEngineMac;
142 friend class QX11PaintEngine;
143 friend Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, PaintDeviceMetric metric);
144};
145
146#ifdef QT3_SUPPORT
147QT3_SUPPORT Q_GUI_EXPORT
148void bitBlt(QPaintDevice *dst, int dx, int dy,
149 const QPaintDevice *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
150 bool ignoreMask=false);
151
152QT3_SUPPORT Q_GUI_EXPORT
153void bitBlt(QPaintDevice *dst, int dx, int dy,
154 const QImage *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
155 int conversion_flags=0);
156
157QT3_SUPPORT Q_GUI_EXPORT
158void bitBlt(QPaintDevice *dst, const QPoint &dp,
159 const QPaintDevice *src, const QRect &sr=QRect(0,0,-1,-1),
160 bool ignoreMask=false);
161#endif
162
163/*****************************************************************************
164 Inline functions
165 *****************************************************************************/
166
167inline int QPaintDevice::devType() const
168{ return QInternal::UnknownDevice; }
169
170inline bool QPaintDevice::paintingActive() const
171{ return painters != 0; }
172
173QT_END_NAMESPACE
174
175QT_END_HEADER
176
177#endif // QPAINTDEVICE_H
178