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/****************************************************************************
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qoffscreencommon.h"
#include "qoffscreenwindow.h"
#include <QtGui/private/qpixmap_raster_p.h>
#include <QtGui/private/qguiapplication_p.h>
#include <qpa/qplatformcursor.h>
#include <qpa/qplatformwindow.h>
QT_BEGIN_NAMESPACE
QPlatformWindow *QOffscreenScreen::windowContainingCursor = 0;
class QOffscreenCursor : public QPlatformCursor
{
public:
QOffscreenCursor() : m_pos(10, 10) {}
QPoint pos() const Q_DECL_OVERRIDE { return m_pos; }
void setPos(const QPoint &pos) Q_DECL_OVERRIDE
{
m_pos = pos;
QWindowList wl = QGuiApplication::topLevelWindows();
QWindow *containing = 0;
foreach (QWindow *w, wl) {
if (w->type() != Qt::Desktop && w->isExposed() && w->geometry().contains(pos)) {
containing = w;
break;
}
}
QPoint local = pos;
if (containing)
local -= containing->position();
QWindow *previous = QOffscreenScreen::windowContainingCursor ? QOffscreenScreen::windowContainingCursor->window() : 0;
if (containing != previous)
QWindowSystemInterface::handleEnterLeaveEvent(containing, previous, local, pos);
QWindowSystemInterface::handleMouseEvent(containing, local, pos, QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers());
QOffscreenScreen::windowContainingCursor = containing ? containing->handle() : 0;
}
#ifndef QT_NO_CURSOR
void changeCursor(QCursor *windowCursor, QWindow *window) Q_DECL_OVERRIDE
{
Q_UNUSED(windowCursor);
Q_UNUSED(window);
}
#endif
private:
QPoint m_pos;
};
QOffscreenScreen::QOffscreenScreen()
: m_geometry(0, 0, 800, 600)
, m_cursor(new QOffscreenCursor)
{
}
QPixmap QOffscreenScreen::grabWindow(WId id, int x, int y, int width, int height) const
{
QRect rect(x, y, width, height);
QOffscreenWindow *window = QOffscreenWindow::windowForWinId(id);
if (!window || window->window()->type() == Qt::Desktop) {
QWindowList wl = QGuiApplication::topLevelWindows();
QWindow *containing = 0;
foreach (QWindow *w, wl) {
if (w->type() != Qt::Desktop && w->isExposed() && w->geometry().contains(rect)) {
containing = w;
break;
}
}
if (!containing)
return QPixmap();
id = containing->winId();
rect = rect.translated(-containing->geometry().topLeft());
}
QOffscreenBackingStore *store = QOffscreenBackingStore::backingStoreForWinId(id);
if (store)
return store->grabWindow(id, rect);
return QPixmap();
}
QOffscreenBackingStore::QOffscreenBackingStore(QWindow *window)
: QPlatformBackingStore(window)
{
}
QOffscreenBackingStore::~QOffscreenBackingStore()
{
clearHash();
}
QPaintDevice *QOffscreenBackingStore::paintDevice()
{
return &m_image;
}
void QOffscreenBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset)
{
Q_UNUSED(region);
if (m_image.size().isEmpty())
return;
QSize imageSize = m_image.size();
QRegion clipped = QRect(0, 0, window->width(), window->height());
clipped &= QRect(0, 0, imageSize.width(), imageSize.height()).translated(-offset);
QRect bounds = clipped.boundingRect().translated(offset);
if (bounds.isNull())
return;
WId id = window->winId();
m_windowAreaHash[id] = bounds;
m_backingStoreForWinIdHash[id] = this;
}
void QOffscreenBackingStore::resize(const QSize &size, const QRegion &)
{
QImage::Format format = QGuiApplication::primaryScreen()->handle()->format();
if (m_image.size() != size)
m_image = QImage(size, format);
clearHash();
}
extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset);
bool QOffscreenBackingStore::scroll(const QRegion &area, int dx, int dy)
{
if (m_image.isNull())
return false;
for (const QRect &rect : area)
qt_scrollRectInImage(m_image, rect, QPoint(dx, dy));
return true;
}
QPixmap QOffscreenBackingStore::grabWindow(WId window, const QRect &rect) const
{
QRect area = m_windowAreaHash.value(window, QRect());
if (area.isNull())
return QPixmap();
QRect adjusted = rect;
if (adjusted.width() <= 0)
adjusted.setWidth(area.width());
if (adjusted.height() <= 0)
adjusted.setHeight(area.height());
adjusted = adjusted.translated(area.topLeft()) & area;
if (adjusted.isEmpty())
return QPixmap();
return QPixmap::fromImage(m_image.copy(adjusted));
}
QOffscreenBackingStore *QOffscreenBackingStore::backingStoreForWinId(WId id)
{
return m_backingStoreForWinIdHash.value(id, 0);
}
void QOffscreenBackingStore::clearHash()
{
QList<WId> ids = m_windowAreaHash.keys();
foreach (WId id, ids) {
QHash<WId, QOffscreenBackingStore *>::iterator it = m_backingStoreForWinIdHash.find(id);
if (it.value() == this)
m_backingStoreForWinIdHash.remove(id);
}
m_windowAreaHash.clear();
}
QHash<WId, QOffscreenBackingStore *> QOffscreenBackingStore::m_backingStoreForWinIdHash;
QT_END_NAMESPACE
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