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39
40#ifndef QXCBSCREEN_H
41#define QXCBSCREEN_H
42
43#include <qpa/qplatformscreen.h>
44#include <QtCore/QString>
45
46#include <xcb/xcb.h>
47#include <xcb/randr.h>
48#include <xcb/xfixes.h>
49#include <xcb/xinerama.h>
50
51#include "qxcbobject.h"
52#include "qxcbscreen.h"
53
54#include <private/qfontengine_p.h>
55
56#include <QtEdidSupport/private/qedidparser_p.h>
57
58QT_BEGIN_NAMESPACE
59
60class QXcbConnection;
61class QXcbCursor;
62class QXcbXSettings;
63#ifndef QT_NO_DEBUG_STREAM
64class QDebug;
65#endif
66
67class QXcbVirtualDesktop : public QXcbObject
68{
69public:
70 QXcbVirtualDesktop(QXcbConnection *connection, xcb_screen_t *screen, int number);
71 ~QXcbVirtualDesktop();
72
73 xcb_screen_t *screen() const { return m_screen; }
74 int number() const { return m_number; }
75 QSize size() const { return QSize(m_screen->width_in_pixels, m_screen->height_in_pixels); }
76 QSize physicalSize() const { return QSize(m_screen->width_in_millimeters, m_screen->height_in_millimeters); }
77 QDpi dpi() const;
78 xcb_window_t root() const { return m_screen->root; }
79 QXcbScreen *screenAt(const QPoint &pos) const;
80
81 QList<QPlatformScreen *> screens() const { return m_screens; }
82 void setScreens(QList<QPlatformScreen *> &&sl) { m_screens = std::move(sl); }
83 void removeScreen(QPlatformScreen *s) { m_screens.removeOne(t: s); }
84 void addScreen(QPlatformScreen *s);
85 void setPrimaryScreen(QPlatformScreen *s);
86
87 QXcbXSettings *xSettings() const;
88
89 bool compositingActive() const;
90
91 void updateWorkArea();
92 QRect availableGeometry(const QRect &screenGeometry) const;
93
94 void handleXFixesSelectionNotify(xcb_xfixes_selection_notify_event_t *notify_event);
95 void subscribeToXFixesSelectionNotify();
96
97 void handleScreenChange(xcb_randr_screen_change_notify_event_t *change_event);
98
99 int forcedDpi() const { return m_forcedDpi; }
100 QFontEngine::HintStyle hintStyle() const { return m_hintStyle; }
101 QFontEngine::SubpixelAntialiasingType subpixelType() const { return m_subpixelType; }
102 int antialiasingEnabled() const { return m_antialiasingEnabled; }
103
104 QString windowManagerName() const { return m_windowManagerName; }
105
106 QSurfaceFormat surfaceFormatFor(const QSurfaceFormat &format) const;
107
108 const xcb_visualtype_t *visualForFormat(const QSurfaceFormat &format) const;
109 const xcb_visualtype_t *visualForId(xcb_visualid_t) const;
110 quint8 depthOfVisual(xcb_visualid_t) const;
111 xcb_colormap_t colormapForVisual(xcb_visualid_t) const;
112
113private:
114 QRect getWorkArea() const;
115
116 static bool xResource(const QByteArray &identifier,
117 const QByteArray &expectedIdentifier,
118 QByteArray &stringValue);
119 void readXResources();
120
121 bool setDpiFromXSettings(const QVariant &property);
122
123 xcb_screen_t *m_screen;
124 const int m_number;
125 QList<QPlatformScreen *> m_screens;
126
127 QXcbXSettings *m_xSettings = nullptr;
128 xcb_atom_t m_net_wm_cm_atom = 0;
129 bool m_compositingActive = false;
130
131 QRect m_workArea;
132
133 int m_forcedDpi = -1;
134 QFontEngine::HintStyle m_hintStyle = QFontEngine::HintStyle(-1);
135 QFontEngine::SubpixelAntialiasingType m_subpixelType = QFontEngine::SubpixelAntialiasingType(-1);
136 int m_antialiasingEnabled = -1;
137 QString m_windowManagerName;
138 QMap<xcb_visualid_t, xcb_visualtype_t> m_visuals;
139 QMap<xcb_visualid_t, quint8> m_visualDepths;
140 mutable QMap<xcb_visualid_t, xcb_colormap_t> m_visualColormaps;
141 uint16_t m_rotation = 0;
142};
143
144class Q_XCB_EXPORT QXcbScreen : public QXcbObject, public QPlatformScreen
145{
146public:
147 QXcbScreen(QXcbConnection *connection, QXcbVirtualDesktop *virtualDesktop,
148 xcb_randr_output_t outputId, xcb_randr_get_output_info_reply_t *outputInfo,
149 const xcb_xinerama_screen_info_t *xineramaScreenInfo = nullptr, int xineramaScreenIdx = -1);
150 ~QXcbScreen();
151
152 QString getOutputName(xcb_randr_get_output_info_reply_t *outputInfo);
153
154 QPixmap grabWindow(WId window, int x, int y, int width, int height) const override;
155
156 QWindow *topLevelAt(const QPoint &point) const override;
157
158 QString manufacturer() const override;
159 QString model() const override;
160 QString serialNumber() const override;
161
162 QRect geometry() const override { return m_geometry; }
163 QRect availableGeometry() const override;
164 int depth() const override { return screen()->root_depth; }
165 QImage::Format format() const override;
166 QSizeF physicalSize() const override { return m_sizeMillimeters; }
167 QDpi logicalDpi() const override;
168 QDpi logicalBaseDpi() const override { return QDpi(96, 96); };
169 QPlatformCursor *cursor() const override;
170 qreal refreshRate() const override { return m_refreshRate; }
171 Qt::ScreenOrientation orientation() const override { return m_orientation; }
172 QList<QPlatformScreen *> virtualSiblings() const override { return m_virtualDesktop->screens(); }
173 QXcbVirtualDesktop *virtualDesktop() const { return m_virtualDesktop; }
174
175 void setPrimary(bool primary) { m_primary = primary; }
176 bool isPrimary() const { return m_primary; }
177
178 int screenNumber() const { return m_virtualDesktop->number(); }
179 static int virtualDesktopNumberStatic(const QScreen *screen);
180
181 xcb_screen_t *screen() const { return m_virtualDesktop->screen(); }
182 xcb_window_t root() const { return screen()->root; }
183 xcb_randr_output_t output() const { return m_output; }
184 xcb_randr_crtc_t crtc() const { return m_crtc; }
185 xcb_randr_mode_t mode() const { return m_mode; }
186
187 void setOutput(xcb_randr_output_t outputId,
188 xcb_randr_get_output_info_reply_t *outputInfo);
189 void setCrtc(xcb_randr_crtc_t crtc) { m_crtc = crtc; }
190
191 void windowShown(QXcbWindow *window);
192 QString windowManagerName() const { return m_virtualDesktop->windowManagerName(); }
193
194 QSurfaceFormat surfaceFormatFor(const QSurfaceFormat &format) const;
195
196 const xcb_visualtype_t *visualForFormat(const QSurfaceFormat &format) const { return m_virtualDesktop->visualForFormat(format); }
197 const xcb_visualtype_t *visualForId(xcb_visualid_t visualid) const;
198 xcb_colormap_t colormapForVisual(xcb_visualid_t visualid) const { return m_virtualDesktop->colormapForVisual(visualid); }
199 quint8 depthOfVisual(xcb_visualid_t visualid) const { return m_virtualDesktop->depthOfVisual(visualid); }
200
201 QString name() const override { return m_outputName; }
202
203 void updateGeometry(const QRect &geometry, uint8_t rotation);
204 void updateGeometry(xcb_timestamp_t timestamp = XCB_TIME_CURRENT_TIME);
205 void updateAvailableGeometry();
206 void updateRefreshRate(xcb_randr_mode_t mode);
207
208 QFontEngine::HintStyle hintStyle() const { return m_virtualDesktop->hintStyle(); }
209 QFontEngine::SubpixelAntialiasingType subpixelType() const { return m_virtualDesktop->subpixelType(); }
210 int antialiasingEnabled() const { return m_virtualDesktop->antialiasingEnabled(); }
211
212 QXcbXSettings *xSettings() const;
213
214private:
215 void sendStartupMessage(const QByteArray &message) const;
216 int forcedDpi() const;
217
218 QByteArray getOutputProperty(xcb_atom_t atom) const;
219 QByteArray getEdid() const;
220
221 QXcbVirtualDesktop *m_virtualDesktop;
222 xcb_randr_output_t m_output;
223 xcb_randr_crtc_t m_crtc;
224 xcb_randr_mode_t m_mode = XCB_NONE;
225 bool m_primary = false;
226
227 QString m_outputName;
228 QSizeF m_outputSizeMillimeters;
229 QSizeF m_sizeMillimeters;
230 QRect m_geometry;
231 QRect m_availableGeometry;
232 Qt::ScreenOrientation m_orientation = Qt::PrimaryOrientation;
233 QXcbCursor *m_cursor;
234 qreal m_refreshRate = 60.0;
235 QEdidParser m_edid;
236};
237
238#ifndef QT_NO_DEBUG_STREAM
239Q_GUI_EXPORT QDebug operator<<(QDebug, const QXcbScreen *);
240#endif
241
242QT_END_NAMESPACE
243
244#endif
245

source code of qtbase/src/plugins/platforms/xcb/qxcbscreen.h