summaryrefslogtreecommitdiffstats
path: root/src/plugins/platforms/xcb/qxcbscreen.h
blob: 79698b4ef3ef6758cdfe8c044e7add3906e4579c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QXCBSCREEN_H
#define QXCBSCREEN_H

#include <qpa/qplatformscreen.h>
#include <QtCore/QString>

#include <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/xfixes.h>
#include <xcb/xinerama.h>

#include "qxcbobject.h"
#include "qxcbscreen.h"

#include <private/qfontengine_p.h>

#include <QtEdidSupport/private/qedidparser_p.h>

QT_BEGIN_NAMESPACE

class QXcbConnection;
class QXcbCursor;
class QXcbXSettings;
#ifndef QT_NO_DEBUG_STREAM
class QDebug;
#endif

class QXcbVirtualDesktop : public QXcbObject
{
public:
    QXcbVirtualDesktop(QXcbConnection *connection, xcb_screen_t *screen, int number);
    ~QXcbVirtualDesktop();

    xcb_screen_t *screen() const { return m_screen; }
    int number() const { return m_number; }
    QSize size() const { return QSize(m_screen->width_in_pixels, m_screen->height_in_pixels); }
    QSize physicalSize() const { return QSize(m_screen->width_in_millimeters, m_screen->height_in_millimeters); }
    QDpi dpi() const;
    xcb_window_t root() const { return m_screen->root; }
    QXcbScreen *screenAt(const QPoint &pos) const;

    QList<QPlatformScreen *> screens() const { return m_screens; }
    void setScreens(QList<QPlatformScreen *> &&sl) { m_screens = std::move(sl); }
    void removeScreen(QPlatformScreen *s) { m_screens.removeOne(s); }
    void addScreen(QPlatformScreen *s);
    void setPrimaryScreen(QPlatformScreen *s);

    QXcbXSettings *xSettings() const;

    bool compositingActive() const;

    QRect workArea() const { return m_workArea; }
    void updateWorkArea();

    void handleXFixesSelectionNotify(xcb_xfixes_selection_notify_event_t *notify_event);
    void subscribeToXFixesSelectionNotify();

    void handleScreenChange(xcb_randr_screen_change_notify_event_t *change_event);

    int forcedDpi() const { return m_forcedDpi; }
    QFontEngine::HintStyle hintStyle() const { return m_hintStyle; }
    QFontEngine::SubpixelAntialiasingType subpixelType() const { return m_subpixelType; }
    int antialiasingEnabled() const { return m_antialiasingEnabled; }

    QString windowManagerName() const { return m_windowManagerName; }

    QSurfaceFormat surfaceFormatFor(const QSurfaceFormat &format) const;

    const xcb_visualtype_t *visualForFormat(const QSurfaceFormat &format) const;
    const xcb_visualtype_t *visualForId(xcb_visualid_t) const;
    quint8 depthOfVisual(xcb_visualid_t) const;

private:
    QRect getWorkArea() const;

    static bool xResource(const QByteArray &identifier,
                          const QByteArray &expectedIdentifier,
                          QByteArray &stringValue);
    void readXResources();

    xcb_screen_t *m_screen;
    const int m_number;
    QList<QPlatformScreen *> m_screens;

    QXcbXSettings *m_xSettings = nullptr;
    xcb_atom_t m_net_wm_cm_atom = 0;
    bool m_compositingActive = false;

    QRect m_workArea;

    int m_forcedDpi = -1;
    QFontEngine::HintStyle m_hintStyle = QFontEngine::HintStyle(-1);
    QFontEngine::SubpixelAntialiasingType m_subpixelType = QFontEngine::SubpixelAntialiasingType(-1);
    int m_antialiasingEnabled = -1;
    QString m_windowManagerName;
    QMap<xcb_visualid_t, xcb_visualtype_t> m_visuals;
    QMap<xcb_visualid_t, quint8> m_visualDepths;
    uint16_t m_rotation = 0;
};

class Q_XCB_EXPORT QXcbScreen : public QXcbObject, public QPlatformScreen
{
public:
    QXcbScreen(QXcbConnection *connection, QXcbVirtualDesktop *virtualDesktop,
               xcb_randr_output_t outputId, xcb_randr_get_output_info_reply_t *outputInfo,
               const xcb_xinerama_screen_info_t *xineramaScreenInfo = nullptr, int xineramaScreenIdx = -1);
    ~QXcbScreen();

    QString getOutputName(xcb_randr_get_output_info_reply_t *outputInfo);

    QPixmap grabWindow(WId window, int x, int y, int width, int height) const override;

    QWindow *topLevelAt(const QPoint &point) const override;

    QString manufacturer() const override;
    QString model() const override;
    QString serialNumber() const override;

    QRect geometry() const override { return m_geometry; }
    QRect availableGeometry() const override;
    int depth() const override { return screen()->root_depth; }
    QImage::Format format() const override;
    QSizeF physicalSize() const override { return m_sizeMillimeters; }
    QDpi logicalDpi() const override;
    QDpi logicalBaseDpi() const override { return QDpi(96, 96); };
    QPlatformCursor *cursor() const override;
    qreal refreshRate() const override { return m_refreshRate; }
    Qt::ScreenOrientation orientation() const override { return m_orientation; }
    QList<QPlatformScreen *> virtualSiblings() const override { return m_virtualDesktop->screens(); }
    QXcbVirtualDesktop *virtualDesktop() const { return m_virtualDesktop; }

    void setPrimary(bool primary) { m_primary = primary; }
    bool isPrimary() const { return m_primary; }

    int screenNumber() const { return m_virtualDesktop->number(); }
    static int virtualDesktopNumberStatic(const QScreen *screen);

    xcb_screen_t *screen() const { return m_virtualDesktop->screen(); }
    xcb_window_t root() const { return screen()->root; }
    xcb_randr_output_t output() const { return m_output; }
    xcb_randr_crtc_t crtc() const { return m_crtc; }
    xcb_randr_mode_t mode() const { return m_mode; }

    void setOutput(xcb_randr_output_t outputId,
                   xcb_randr_get_output_info_reply_t *outputInfo);
    void setCrtc(xcb_randr_crtc_t crtc) { m_crtc = crtc; }

    void windowShown(QXcbWindow *window);
    QString windowManagerName() const { return m_virtualDesktop->windowManagerName(); }

    QSurfaceFormat surfaceFormatFor(const QSurfaceFormat &format) const;

    const xcb_visualtype_t *visualForFormat(const QSurfaceFormat &format) const { return m_virtualDesktop->visualForFormat(format); }
    const xcb_visualtype_t *visualForId(xcb_visualid_t visualid) const;
    quint8 depthOfVisual(xcb_visualid_t visualid) const { return m_virtualDesktop->depthOfVisual(visualid); }

    QString name() const override { return m_outputName; }

    void updateGeometry(const QRect &geometry, uint8_t rotation);
    void updateGeometry(xcb_timestamp_t timestamp = XCB_TIME_CURRENT_TIME);
    void updateAvailableGeometry();
    void updateRefreshRate(xcb_randr_mode_t mode);

    QFontEngine::HintStyle hintStyle() const { return m_virtualDesktop->hintStyle(); }
    QFontEngine::SubpixelAntialiasingType subpixelType() const { return m_virtualDesktop->subpixelType(); }
    int antialiasingEnabled() const { return m_virtualDesktop->antialiasingEnabled(); }

    QXcbXSettings *xSettings() const;

private:
    void sendStartupMessage(const QByteArray &message) const;
    int forcedDpi() const;

    QByteArray getOutputProperty(xcb_atom_t atom) const;
    QByteArray getEdid() const;

    QXcbVirtualDesktop *m_virtualDesktop;
    xcb_randr_output_t m_output;
    xcb_randr_crtc_t m_crtc;
    xcb_randr_mode_t m_mode = XCB_NONE;
    bool m_primary = false;

    QString m_outputName;
    QSizeF m_outputSizeMillimeters;
    QSizeF m_sizeMillimeters;
    QRect m_geometry;
    QRect m_availableGeometry;
    Qt::ScreenOrientation m_orientation = Qt::PrimaryOrientation;
    QXcbCursor *m_cursor;
    qreal m_refreshRate = 60.0;
    QEdidParser m_edid;
};

#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug, const QXcbScreen *);
#endif

QT_END_NAMESPACE

#endif