Lomiri
DebuggingController.cpp
1 /*
2  * Copyright (C) 2016 - Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License, as
6  * published by the Free Software Foundation; either version 2.1 or 3.0
7  * of the License.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranties of
11  * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
12  * PURPOSE. See the applicable version of the GNU Lesser General Public
13  * License for more details.
14  *
15  * You should have received a copy of both the GNU Lesser General Public
16  * License along with this program. If not, see <http://www.gnu.org/licenses/>
17  */
18 
19 #include "DebuggingController.h"
20 
21 #include <QGuiApplication>
22 #include <QWindow>
23 #include <private/qquickwindow_p.h>
24 #include <private/qabstractanimationjob_p.h>
25 #include <private/qquickitem_p.h>
26 #include <private/qsgrenderer_p.h>
27 
28 
29 class ApplySceneGraphVisualizationJob : public QRunnable
30 {
31 public:
32  ApplySceneGraphVisualizationJob(QQuickWindow *window, QByteArray renderMode)
33  : m_window(window), m_renderMode(renderMode){}
34  void run() override
35  {
36  qDebug() << "Setting custom render mode to:" << m_renderMode;
37 
38  QQuickWindowPrivate *winPriv = QQuickWindowPrivate::get(m_window);
39 
40  winPriv->customRenderMode = m_renderMode;
41  delete winPriv->renderer;
42  winPriv->renderer = nullptr;
43 
44  QTimer::singleShot(10, m_window, &QQuickWindow::update); // force another frame
45  }
46 
47  QQuickWindow *m_window;
48  QByteArray m_renderMode;
49 };
50 
51 DebuggingController::DebuggingController(QObject *parent):
52  LomiriDBusObject(QStringLiteral("/com/lomiri/Shell/Debugging"), QStringLiteral("com.lomiri.Shell"), true, parent)
53 {
54 }
55 
56 void DebuggingController::SetSceneGraphVisualizer(const QString &visualizer)
57 {
58  QByteArray pendingRenderMode;
59  QStringList supportedRenderModes = {"clip", "overdraw", "changes", "batches"};
60  if (supportedRenderModes.contains(visualizer)) {
61  pendingRenderMode = visualizer.toLatin1();
62  }
63 
64  Q_FOREACH (QWindow *window, QGuiApplication::allWindows()) {
65  QQuickWindow* qquickWindow = qobject_cast<QQuickWindow*>(window);
66  if (qquickWindow) {
67 
68 #if QT_VERSION >= QT_VERSION_CHECK(5, 5, 0)
69  // Qt does some performance optimizations that break custom render modes.
70  // Thus the optimizations are only applied if there is no custom render mode set.
71  // So we need to make the scenegraph recheck whether a custom render mode is set.
72  // We do this by simply recreating the renderer.
73  qquickWindow->scheduleRenderJob(new ApplySceneGraphVisualizationJob(qquickWindow, pendingRenderMode),
74  QQuickWindow::AfterSwapStage);
75 #else
76  QQuickWindowPrivate *winPriv = QQuickWindowPrivate::get(qquickWindow);
77  winPriv->customRenderMode = visualizer.toLatin1();
78 #endif
79  qquickWindow->update();
80  }
81  }
82 }
83 
84 void DebuggingController::SetSlowAnimations(bool slowAnimations)
85 {
86  QUnifiedTimer::instance()->setSlowModeEnabled(slowAnimations);
87 }
88 
89 void DebuggingController::SetLoggingFilterRules(const QString &filterRules)
90 {
91  QLoggingCategory::setFilterRules(filterRules);
92 }