git.iko.soy/unity8
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unity8/plugins/Cursor/MousePointer.cpp
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1/*
2 * Copyright (C) 2015 Canonical, Ltd.
3 *
4 * This program is free software: you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License version 3, as published by
6 * the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
10 * SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
17#include "MousePointer.h"
18#include "CursorImageProvider.h"
20// Unity API
21#include <unity/shell/application/MirPlatformCursor.h>
23#include <QQuickWindow>
24#include <QGuiApplication>
26#include <qpa/qwindowsysteminterface.h>
28MousePointer::MousePointer(QQuickItem *parent)
29 : MirMousePointerInterface(parent)
30 , m_cursorName(QStringLiteral("left_ptr"))
31 , m_themeName(QStringLiteral("default"))
35void MousePointer::handleMouseEvent(ulong timestamp, QPointF movement, Qt::MouseButtons buttons,
36 Qt::KeyboardModifiers modifiers)
38 if (!parentItem()) {
39 return;
40 }
42 if (!movement.isNull()) {
43 Q_EMIT mouseMoved();
44 }
46 qreal newX = x() + movement.x();
47 if (newX < 0) {
48 Q_EMIT pushedLeftBoundary(qAbs(newX), buttons);
49 newX = 0;
50 } else if (newX > parentItem()->width()) {
51 Q_EMIT pushedRightBoundary(newX - parentItem()->width(), buttons);
52 newX = parentItem()->width();
53 }
54 setX(newX);
56 qreal newY = y() + movement.y();
57 if (newY < 0) {
58 newY = 0;
59 } else if (newY > parentItem()->height()) {
60 newY = parentItem()->height();
61 }
62 setY(newY);
64 QPointF scenePosition = mapToItem(nullptr, QPointF(0, 0));
65 QWindowSystemInterface::handleMouseEvent(window(), timestamp, scenePosition /*local*/, scenePosition /*global*/,
66 buttons, modifiers);
69void MousePointer::handleWheelEvent(ulong timestamp, QPoint angleDelta, Qt::KeyboardModifiers modifiers)
71 if (!parentItem()) {
72 return;
73 }
75 QPointF scenePosition = mapToItem(nullptr, QPointF(0, 0));
76 QWindowSystemInterface::handleWheelEvent(window(), timestamp, scenePosition /* local */, scenePosition /* global */,
77 QPoint() /* pixelDelta */, angleDelta, modifiers, Qt::ScrollUpdate);
80void MousePointer::itemChange(ItemChange change, const ItemChangeData &value)
82 if (change == ItemSceneChange) {
83 registerWindow(value.window);
84 }
87void MousePointer::registerWindow(QWindow *window)
89 if (window == m_registeredWindow) {
90 return;
91 }
93 if (m_registeredWindow) {
94 m_registeredWindow->disconnect(this);
95 }
97 m_registeredWindow = window;
99 if (m_registeredWindow) {
100 connect(window, &QWindow::screenChanged, this, &MousePointer::registerScreen);
101 registerScreen(window->screen());
102 } else {
103 registerScreen(nullptr);
104 }
107void MousePointer::registerScreen(QScreen *screen)
109 if (m_registeredScreen == screen) {
110 return;
111 }
113 if (m_registeredScreen) {
114 auto previousCursor = dynamic_cast<MirPlatformCursor*>(m_registeredScreen->handle()->cursor());
115 if (previousCursor) {
116 previousCursor->setMousePointer(nullptr);
117 } else {
118 qCritical("QPlatformCursor is not a MirPlatformCursor! Cursor module only works in a Mir server.");
119 }
120 }
122 m_registeredScreen = screen;
124 if (m_registeredScreen) {
125 auto cursor = dynamic_cast<MirPlatformCursor*>(m_registeredScreen->handle()->cursor());
126 if (cursor) {
127 cursor->setMousePointer(this);
128 } else {
129 qCritical("QPlaformCursor is not a MirPlatformCursor! Cursor module only works in Mir.");
130 }
131 }
134void MousePointer::setCursorName(const QString &cursorName)
136 if (cursorName != m_cursorName) {
137 m_cursorName = cursorName;
138 Q_EMIT cursorNameChanged(m_cursorName);
139 }
142void MousePointer::setThemeName(const QString &themeName)
144 if (m_themeName != themeName) {
145 m_themeName = themeName;
146 Q_EMIT themeNameChanged(m_themeName);
147 }
150void MousePointer::setCustomCursor(const QCursor &customCursor)
152 CursorImageProvider::instance()->setCustomCursor(customCursor);