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MousePointer.cpp
/*
* Copyright (C) 2015-2016 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License version 3, as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
* SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "MousePointer.h"
#include "CursorImageProvider.h"
#include "InputDispatcherFilter.h"
#include <QQuickWindow>
// Lomiri API
#include <lomiri/shell/application/MirPlatformCursor.h>
MousePointer::MousePointer(QQuickItem *parent)
: MirMousePointerInterface(parent)
, m_cursorName(QStringLiteral("left_ptr"))
, m_themeName(QStringLiteral("default"))
{
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedLeftBoundary,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedLeftBoundary(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedRightBoundary,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedRightBoundary(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedTopBoundary,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedTopBoundary(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedTopLeftCorner,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedTopLeftCorner(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedTopRightCorner,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedTopRightCorner(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedBottomLeftCorner,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedBottomLeftCorner(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushedBottomRightCorner,
this, [this](QScreen* screen, qreal amount, Qt::MouseButtons buttons) {
if (window() && window()->screen() == screen) {
Q_EMIT pushedBottomRightCorner(amount, buttons);
}
});
connect(InputDispatcherFilter::instance(), &InputDispatcherFilter::pushStopped,
this, [this](QScreen* screen) {
if (window() && window()->screen() == screen) {
Q_EMIT pushStopped();
}
});
InputDispatcherFilter::instance()->registerPointer(this);
}
MousePointer::~MousePointer()
{
registerScreen(nullptr);
InputDispatcherFilter::instance()->unregisterPointer(this);
}
void MousePointer::applyItemConfinement(qreal &newX, qreal &newY)
{
Q_ASSERT(parentItem() != nullptr);
if (m_confiningItem.isNull()) {
return;
}
QRectF confiningItemGeometry(0, 0, m_confiningItem->width(), m_confiningItem->height());
QRectF confiningRect = m_confiningItem->mapRectToItem(parentItem(), confiningItemGeometry);
if (newX < confiningRect.x()) {
newX = confiningRect.x();
} else if (newX > confiningRect.right()) {
newX = confiningRect.right();
}
if (newY < confiningRect.y()) {
newY = confiningRect.y();
} else if (newY > confiningRect.bottom()) {
newY = confiningRect.bottom();
}
}
int MousePointer::topBoundaryOffset() const
{
return m_topBoundaryOffset;
}
void MousePointer::setTopBoundaryOffset(int topBoundaryOffset)
{
if (m_topBoundaryOffset == topBoundaryOffset)
return;
m_topBoundaryOffset = topBoundaryOffset;
Q_EMIT topBoundaryOffsetChanged(topBoundaryOffset);
}
void MousePointer::itemChange(ItemChange change, const ItemChangeData &value)
{
if (change == ItemSceneChange) {
registerWindow(value.window);
}
}
void MousePointer::registerWindow(QWindow *window)
{
if (window == m_registeredWindow) {
return;
}
if (m_registeredWindow) {
m_registeredWindow->disconnect(this);
}
m_registeredWindow = window;
if (m_registeredWindow) {
connect(window, &QWindow::screenChanged, this, &MousePointer::registerScreen);
registerScreen(window->screen());
} else {
registerScreen(nullptr);
}
}
void MousePointer::registerScreen(QScreen *screen)
{
if (m_registeredScreen == screen) {
return;
}
if (m_registeredScreen) {
auto previousCursor = dynamic_cast<MirPlatformCursor*>(m_registeredScreen->handle()->cursor());
if (previousCursor) {
previousCursor->unregisterMousePointer(this);
} else {
qCritical("QPlatformCursor is not a MirPlatformCursor! Cursor module only works in a Mir server.");
}
}
m_registeredScreen = screen;
if (m_registeredScreen) {
auto cursor = dynamic_cast<MirPlatformCursor*>(m_registeredScreen->handle()->cursor());
if (cursor) {
cursor->registerMousePointer(this);
} else {
qCritical("QPlaformCursor is not a MirPlatformCursor! Cursor module only works in Mir.");
}
}
}
void MousePointer::setCursorName(const QString &cursorName)
{
if (cursorName != m_cursorName) {
m_cursorName = cursorName;
Q_EMIT cursorNameChanged(m_cursorName);
}
}
void MousePointer::setThemeName(const QString &themeName)
{
if (m_themeName != themeName) {
m_themeName = themeName;
Q_EMIT themeNameChanged(m_themeName);
}
}
void MousePointer::moveTo(const QPoint &position)
{
setPosition(position);
Q_EMIT mouseMoved();
}
void MousePointer::setCustomCursor(const QCursor &customCursor)
{
CursorImageProvider::instance()->setCustomCursor(customCursor);
}
QQuickItem* MousePointer::confiningItem() const
{
return m_confiningItem.data();
}
void MousePointer::setConfiningItem(QQuickItem *item)
{
if (item != m_confiningItem) {
m_confiningItem = item;
Q_EMIT confiningItemChanged();
}
}