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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qfbscreen_p.h"
#include "qfbcursor_p.h"
#include "qfbwindow_p.h"
#include "qfbbackingstore_p.h"
#include <QtGui/QPainter>
#include <QtCore/QCoreApplication>
#include <qpa/qwindowsysteminterface.h>
#include <QtCore/QDebug>
#include <QtCore/QElapsedTimer>
QT_BEGIN_NAMESPACE
QFbScreen::QFbScreen()
: mUpdatePending(false),
mCursor(0),
mDepth(16),
mFormat(QImage::Format_RGB16),
mPainter(nullptr)
{
}
QFbScreen::~QFbScreen()
{
delete mPainter;
}
void QFbScreen::initializeCompositor()
{
mScreenImage = QImage(mGeometry.size(), mFormat);
scheduleUpdate();
}
bool QFbScreen::event(QEvent *event)
{
if (event->type() == QEvent::UpdateRequest) {
doRedraw();
mUpdatePending = false;
return true;
}
return QObject::event(event);
}
void QFbScreen::addWindow(QFbWindow *window)
{
mWindowStack.prepend(window);
if (!mPendingBackingStores.isEmpty()) {
//check if we have a backing store for this window
for (int i = 0; i < mPendingBackingStores.size(); ++i) {
QFbBackingStore *bs = mPendingBackingStores.at(i);
// this gets called during QWindow::create() at a point where the
// invariant (window->handle()->window() == window) is broken
if (bs->window() == window->window()) {
window->setBackingStore(bs);
mPendingBackingStores.removeAt(i);
break;
}
}
}
setDirty(window->geometry());
QWindow *w = topWindow();
QWindowSystemInterface::handleWindowActivated(w);
topWindowChanged(w);
}
void QFbScreen::removeWindow(QFbWindow *window)
{
mWindowStack.removeOne(window);
setDirty(window->geometry());
QWindow *w = topWindow();
QWindowSystemInterface::handleWindowActivated(w);
topWindowChanged(w);
}
void QFbScreen::raise(QFbWindow *window)
{
int index = mWindowStack.indexOf(window);
if (index <= 0)
return;
mWindowStack.move(index, 0);
setDirty(window->geometry());
QWindow *w = topWindow();
QWindowSystemInterface::handleWindowActivated(w);
topWindowChanged(w);
}
void QFbScreen::lower(QFbWindow *window)
{
int index = mWindowStack.indexOf(window);
if (index == -1 || index == (mWindowStack.size() - 1))
return;
mWindowStack.move(index, mWindowStack.size() - 1);
setDirty(window->geometry());
QWindow *w = topWindow();
QWindowSystemInterface::handleWindowActivated(w);
topWindowChanged(w);
}
QWindow *QFbScreen::topWindow() const
{
for (QFbWindow *fbw : mWindowStack) {
if (fbw->window()->type() == Qt::Window || fbw->window()->type() == Qt::Dialog)
return fbw->window();
}
return nullptr;
}
QWindow *QFbScreen::topLevelAt(const QPoint & p) const
{
for (QFbWindow *fbw : mWindowStack) {
if (fbw->geometry().contains(p, false) && fbw->window()->isVisible())
return fbw->window();
}
return nullptr;
}
int QFbScreen::windowCount() const
{
return mWindowStack.count();
}
void QFbScreen::setDirty(const QRect &rect)
{
const QRect intersection = rect.intersected(mGeometry);
const QPoint screenOffset = mGeometry.topLeft();
mRepaintRegion += intersection.translated(-screenOffset); // global to local translation
scheduleUpdate();
}
void QFbScreen::scheduleUpdate()
{
if (!mUpdatePending) {
mUpdatePending = true;
QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest));
}
}
void QFbScreen::setPhysicalSize(const QSize &size)
{
mPhysicalSize = size;
}
void QFbScreen::setGeometry(const QRect &rect)
{
delete mPainter;
mPainter = nullptr;
mGeometry = rect;
mScreenImage = QImage(mGeometry.size(), mFormat);
QWindowSystemInterface::handleScreenGeometryChange(QPlatformScreen::screen(), geometry(), availableGeometry());
resizeMaximizedWindows();
}
bool QFbScreen::initialize()
{
return true;
}
QRegion QFbScreen::doRedraw()
{
const QPoint screenOffset = mGeometry.topLeft();
QRegion touchedRegion;
if (mCursor && mCursor->isDirty() && mCursor->isOnScreen()) {
const QRect lastCursor = mCursor->dirtyRect();
mRepaintRegion += lastCursor;
}
if (mRepaintRegion.isEmpty() && (!mCursor || !mCursor->isDirty()))
return touchedRegion;
if (!mPainter)
mPainter = new QPainter(&mScreenImage);
const QRect screenRect = mGeometry.translated(-screenOffset);
for (QRect rect : mRepaintRegion) {
rect = rect.intersected(screenRect);
if (rect.isEmpty())
continue;
mPainter->setCompositionMode(QPainter::CompositionMode_Source);
mPainter->fillRect(rect, mScreenImage.hasAlphaChannel() ? Qt::transparent : Qt::black);
for (int layerIndex = mWindowStack.size() - 1; layerIndex != -1; layerIndex--) {
if (!mWindowStack[layerIndex]->window()->isVisible())
continue;
const QRect windowRect = mWindowStack[layerIndex]->geometry().translated(-screenOffset);
const QRect windowIntersect = rect.translated(-windowRect.left(), -windowRect.top());
QFbBackingStore *backingStore = mWindowStack[layerIndex]->backingStore();
if (backingStore) {
backingStore->lock();
mPainter->drawImage(rect, backingStore->image(), windowIntersect);
backingStore->unlock();
}
}
}
if (mCursor && (mCursor->isDirty() || mRepaintRegion.intersects(mCursor->lastPainted()))) {
mPainter->setCompositionMode(QPainter::CompositionMode_SourceOver);
touchedRegion += mCursor->drawCursor(*mPainter);
}
touchedRegion += mRepaintRegion;
mRepaintRegion = QRegion();
return touchedRegion;
}
QFbWindow *QFbScreen::windowForId(WId wid) const
{
for (int i = 0; i < mWindowStack.count(); ++i) {
if (mWindowStack[i]->winId() == wid)
return mWindowStack[i];
}
return nullptr;
}
QFbScreen::Flags QFbScreen::flags() const
{
return { };
}
QT_END_NAMESPACE
#include "moc_qfbscreen_p.cpp"
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