117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
/******************************************************************************
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QtAV: Multimedia framework based on Qt and FFmpeg
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Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
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* This file is part of QtAV
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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******************************************************************************/
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#include "WidgetRenderer.h"
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#include "../QPainterRenderer_p.h"
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#include <QtGui/QFont>
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#include <QtGui/QPainter>
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#include <QApplication>
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#include <QResizeEvent>
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#include "../Filter.h"
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namespace FAV {
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class WidgetRendererPrivate : public QPainterRendererPrivate
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{
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public:
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virtual ~WidgetRendererPrivate(){}
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};
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VideoRendererId WidgetRenderer::id() const
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{
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return VideoRendererId_Widget;
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}
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WidgetRenderer::WidgetRenderer(QWidget *parent, Qt::WindowFlags f) :
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QWidget(parent, f),QPainterRenderer(*new WidgetRendererPrivate())
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{
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DPTR_D(WidgetRenderer);
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d.painter = new QPainter();
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setAcceptDrops(true);
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setFocusPolicy(Qt::StrongFocus);
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/* To rapidly update custom widgets that constantly paint over their entire areas with
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* opaque content, e.g., video streaming widgets, it is better to set the widget's
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* Qt::WA_OpaquePaintEvent, avoiding any unnecessary overhead associated with repainting the
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* widget's background
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*/
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setAttribute(Qt::WA_OpaquePaintEvent);
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setAutoFillBackground(false);
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QPainterFilterContext *ctx = static_cast<QPainterFilterContext*>(d.filter_context);
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if (ctx) {
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ctx->painter = d.painter;
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} else {
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qWarning("FilterContext not available!");
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}
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}
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WidgetRenderer::WidgetRenderer(WidgetRendererPrivate &d, QWidget *parent, Qt::WindowFlags f)
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:QWidget(parent, f),QPainterRenderer(d)
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{
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d.painter = new QPainter();
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setAcceptDrops(true);
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setFocusPolicy(Qt::StrongFocus);
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setAutoFillBackground(false);
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QPainterFilterContext *ctx = static_cast<QPainterFilterContext*>(d.filter_context);
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if (ctx) {
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ctx->painter = d.painter;
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} else {
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qWarning("FilterContext not available!");
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}
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}
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bool WidgetRenderer::receiveFrame(const VideoFrame &frame)
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{
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preparePixmap(frame);
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updateUi();
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/*
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* workaround for the widget not updated if has parent. don't know why it works and why update() can't
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* Thanks to Vito Covito and Carlo Scarpato
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* Now it's fixed by posting a QUpdateLaterEvent
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*/
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Q_EMIT imageReady();
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return true;
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}
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void WidgetRenderer::resizeEvent(QResizeEvent *e)
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{
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DPTR_D(WidgetRenderer);
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d.update_background = true;
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resizeRenderer(e->size());
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update();
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}
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void WidgetRenderer::paintEvent(QPaintEvent *)
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{
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DPTR_D(WidgetRenderer);
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d.painter->begin(this); //Widget painting can only begin as a result of a paintEvent
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handlePaintEvent();
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if (d.painter->isActive())
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d.painter->end();
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}
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bool WidgetRenderer::onSetOrientation(int value)
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{
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Q_UNUSED(value);
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update();
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return true;
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}
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} //namespace QtAV
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