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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "utils.h"
#include "videooutput.h"
#include "videooutputobserver.h"
#ifdef _DEBUG
#include "objectdump.h"
#endif
#include <QPaintEvent>
#include <QPainter>
#include <QMoveEvent>
#include <QResizeEvent>
// Required for implementation of transparentFill
#include <QtGui/private/qwidget_p.h>
#include <QtGui/private/qdrawhelper_p.h>
#include <QtGui/private/qwindowsurface_p.h>
#include <QImage>
QT_BEGIN_NAMESPACE
using namespace Phonon;
using namespace Phonon::MMF;
//-----------------------------------------------------------------------------
// Constructor / destructor
//-----------------------------------------------------------------------------
MMF::VideoOutput::VideoOutput(QWidget* parent)
: QWidget(parent)
, m_observer(NULL)
{
TRACE_CONTEXT(VideoOutput::VideoOutput, EVideoInternal);
TRACE_ENTRY("parent 0x%08x", parent);
setPalette(QPalette(Qt::black));
setAttribute(Qt::WA_OpaquePaintEvent, true);
setAttribute(Qt::WA_NoSystemBackground, true);
setAutoFillBackground(false);
dump();
TRACE_EXIT_0();
}
MMF::VideoOutput::~VideoOutput()
{
TRACE_CONTEXT(VideoOutput::~VideoOutput, EVideoInternal);
TRACE_ENTRY_0();
TRACE_EXIT_0();
}
void MMF::VideoOutput::setFrameSize(const QSize& frameSize)
{
TRACE_CONTEXT(VideoOutput::setFrameSize, EVideoInternal);
TRACE("oldSize %d %d newSize %d %d",
m_frameSize.width(), m_frameSize.height(),
frameSize.width(), frameSize.height());
if (frameSize != m_frameSize) {
m_frameSize = frameSize;
updateGeometry();
}
}
void MMF::VideoOutput::setObserver(VideoOutputObserver* observer)
{
TRACE_CONTEXT(VideoOutput::setObserver, EVideoInternal);
TRACE("observer 0x%08x", observer);
m_observer = observer;
}
//-----------------------------------------------------------------------------
// QWidget
//-----------------------------------------------------------------------------
QSize MMF::VideoOutput::sizeHint() const
{
// TODO: replace this with a more sensible default
QSize result(320, 240);
if (!m_frameSize.isNull()) {
result = m_frameSize;
}
return result;
}
void MMF::VideoOutput::paintEvent(QPaintEvent* event)
{
TRACE_CONTEXT(VideoOutput::paintEvent, EVideoInternal);
TRACE("rect %d %d - %d %d",
event->rect().left(), event->rect().top(),
event->rect().right(), event->rect().bottom());
TRACE("regions %d", event->region().numRects());
TRACE("type %d", event->type());
dump();
#ifdef PHONON_MMF_DIRECT_WRITE_ALPHA
transparentFill(event->region().rects());
#else
// Note: composition mode code was a failed attempt to get transparent
// alpha values to be propagated to the (EColor16MU) window surface.
QPainter painter;
//const QPainter::CompositionMode compositionMode = painter.compositionMode();
//painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.begin(this);
painter.setBrush(QColor(0, 0, 0, 0));
painter.drawRects(event->region().rects());
painter.end();
//painter.setCompositionMode(compositionMode);
#endif
}
void MMF::VideoOutput::transparentFill(const QVector<QRect>& rects)
{
TRACE_CONTEXT(VideoOutput::transparentFill, EVideoInternal);
TRACE_ENTRY_0();
QImage *image = window()->windowSurface()->buffer(window());
QRgb *data = reinterpret_cast<QRgb *>(image->bits());
const int row_stride = image->bytesPerLine() / 4;
// Paint the entire surface
const int imageWidth = image->size().width();
const int imageHeight = image->size().height();
QRgb *row = data;
for(int y=0; y<imageHeight; ++y) {
QRgb *ptr = row;
for(int x=0; x<imageWidth; ++x)
*ptr++ = 0xff0000ff;
row += row_stride;
}
/*
// Paint the specified regions
for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
const QRect& rect = *it;
TRACE("%d %d size %d x %d", rect.x(), rect.y(), rect.width(), rect.height());
const int x_start = rect.x();
const int width = rect.width();
const int y_start = rect.y();
const int height = rect.height();
QRgb *row = data + row_stride * y_start;
for (int y = 0; y < height; ++y) {
// Note: not using the optimised qt_memfill function implemented in
// gui/painting/qdrawhelper.cpp - can we somehow link against this?
QRgb *ptr = row + x_start;
for(int x = 0; x < width; ++x)
*ptr++ = 0x00000000;
row += row_stride;
}
}
*/
TRACE_EXIT_0();
}
void MMF::VideoOutput::resizeEvent(QResizeEvent* event)
{
TRACE_CONTEXT(VideoOutput::resizeEvent, EVideoInternal);
TRACE("%d %d -> %d %d",
event->oldSize().width(), event->oldSize().height(),
event->size().width(), event->size().height());
QWidget::resizeEvent(event);
if (m_observer)
m_observer->videoOutputRegionChanged();
}
void MMF::VideoOutput::moveEvent(QMoveEvent* event)
{
TRACE_CONTEXT(VideoOutput::moveEvent, EVideoInternal);
TRACE("%d %d -> %d %d",
event->oldPos().x(), event->oldPos().y(),
event->pos().x(), event->pos().y());
QWidget::moveEvent(event);
if (m_observer)
m_observer->videoOutputRegionChanged();
}
//-----------------------------------------------------------------------------
// Private functions
//-----------------------------------------------------------------------------
void VideoOutput::dump() const
{
#ifdef _DEBUG
TRACE_CONTEXT(VideoOutput::dump, EVideoInternal);
QScopedPointer<ObjectDump::QVisitor> visitor(new ObjectDump::QVisitor);
visitor->setPrefix("Phonon::MMF"); // to aid searchability of logs
ObjectDump::addDefaultAnnotators(*visitor);
TRACE("Dumping tree from leaf 0x%08x:", this);
//ObjectDump::dumpAncestors(*this, *visitor);
ObjectDump::dumpTreeFromLeaf(*this, *visitor);
#endif
}
QT_END_NAMESPACE
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