284 lines
9 KiB
C++
284 lines
9 KiB
C++
//////////////////////////////////////////////////////////////////////////////
|
|
// oxygentransitionwidget.cpp
|
|
// stores event filters and maps widgets to transitions for transitions
|
|
// -------------------
|
|
//
|
|
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo.pereira@free.fr>
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "transitionwidget.h"
|
|
|
|
#include <cassert>
|
|
|
|
//________________________________________________
|
|
bool TransitionWidget::paintEnabled_ = true;
|
|
bool TransitionWidget::paintEnabled( void ) {
|
|
return paintEnabled_;
|
|
}
|
|
|
|
//________________________________________________
|
|
TransitionWidget::TransitionWidget( QWidget* parent, int duration ):
|
|
QWidget( parent ),
|
|
flags_( None ),
|
|
animation_( new Animation( duration, this ) ),
|
|
opacity_(0) {
|
|
|
|
// background flags
|
|
setAttribute(Qt::WA_NoSystemBackground );
|
|
setAutoFillBackground( false );
|
|
|
|
// setup animation
|
|
animation_.data()->setStartValue( 0 );
|
|
animation_.data()->setEndValue( 1.0 );
|
|
animation_.data()->setTargetObject( this );
|
|
animation_.data()->setPropertyName( "opacity" );
|
|
|
|
// setup connections
|
|
connect( animation_.data(), SIGNAL( finished( void ) ), SIGNAL( finished( void ) ) );
|
|
|
|
}
|
|
|
|
//________________________________________________
|
|
QPixmap TransitionWidget::grab( QWidget* widget, QRect rect ) {
|
|
|
|
// change rect
|
|
if ( !rect.isValid() ) rect = widget->rect();
|
|
if ( !rect.isValid() ) return QPixmap();
|
|
|
|
// initialize pixmap
|
|
QPixmap out( rect.size() );
|
|
out.fill( Qt::transparent );
|
|
paintEnabled_ = false;
|
|
|
|
if ( testFlag( GrabFromWindow ) ) {
|
|
|
|
rect = rect.translated( widget->mapTo( widget->window(), widget->rect().topLeft() ) );
|
|
widget = widget->window();
|
|
out = widget->grab(rect);
|
|
// out = QPixmap::grabWidget( widget, rect );
|
|
|
|
}
|
|
else {
|
|
|
|
if ( !testFlag( Transparent ) ) {
|
|
grabBackground( out, widget, rect );
|
|
}
|
|
grabWidget( out, widget, rect );
|
|
|
|
}
|
|
|
|
paintEnabled_ = true;
|
|
|
|
return out;
|
|
|
|
}
|
|
|
|
//________________________________________________
|
|
void TransitionWidget::paintEvent( QPaintEvent* event ) {
|
|
|
|
// fully transparent case
|
|
if ( opacity() >= 1.0 && endPixmap().isNull() ) return;
|
|
if ( !paintEnabled_ ) return;
|
|
|
|
// get rect
|
|
QRect rect = event->rect();
|
|
if ( !rect.isValid() ) rect = this->rect();
|
|
|
|
// local pixmap
|
|
const bool paintOnWidget( testFlag( PaintOnWidget ) && !testFlag( Transparent ) );
|
|
if ( !paintOnWidget ) {
|
|
|
|
if ( currentPixmap_.isNull() || currentPixmap_.size() != size() ) {
|
|
currentPixmap_ = QPixmap( size() );
|
|
}
|
|
|
|
}
|
|
|
|
// fill
|
|
currentPixmap_.fill( Qt::transparent );
|
|
|
|
// copy local pixmap to current
|
|
{
|
|
|
|
QPainter p;
|
|
|
|
// draw end pixmap first, provided that opacity is small enough
|
|
if ( opacity() >= 0.004 && !endPixmap_.isNull() ) {
|
|
|
|
// faded endPixmap if parent target is transparent and opacity is
|
|
if ( opacity() <= 0.996 && testFlag( Transparent ) ) {
|
|
|
|
fade( endPixmap_, currentPixmap_, opacity(), rect );
|
|
p.begin( ¤tPixmap_ );
|
|
p.setClipRect( event->rect() );
|
|
|
|
}
|
|
else {
|
|
|
|
if ( paintOnWidget ) p.begin( this );
|
|
else p.begin( ¤tPixmap_ );
|
|
p.setClipRect( event->rect() );
|
|
p.drawPixmap( QPoint(), endPixmap_ );
|
|
|
|
}
|
|
|
|
}
|
|
else {
|
|
|
|
if ( paintOnWidget ) p.begin( this );
|
|
else p.begin( ¤tPixmap_ );
|
|
p.setClipRect( event->rect() );
|
|
|
|
}
|
|
|
|
// draw fading start pixmap
|
|
if ( opacity() <= 0.996 && !startPixmap_.isNull() ) {
|
|
if ( opacity() >= 0.004 ) {
|
|
|
|
fade( startPixmap_, localStartPixmap_, 1.0 - opacity(), rect );
|
|
p.drawPixmap( QPoint(), localStartPixmap_ );
|
|
|
|
}
|
|
else p.drawPixmap( QPoint(), startPixmap_ );
|
|
|
|
}
|
|
|
|
p.end();
|
|
}
|
|
|
|
// copy current pixmap on widget
|
|
if ( !paintOnWidget ) {
|
|
QPainter p( this );
|
|
p.setClipRect( event->rect() );
|
|
p.drawPixmap( QPoint(0, 0), currentPixmap_ );
|
|
p.end();
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// grabBackground
|
|
//---------------------------------------------------------
|
|
|
|
void TransitionWidget::grabBackground(QPixmap& pixmap, QWidget* widget, QRect& rect) const
|
|
{
|
|
if (!widget)
|
|
return;
|
|
|
|
QWidgetList widgets;
|
|
if( widget->autoFillBackground() )
|
|
{ widgets.push_back( widget ); }
|
|
|
|
QWidget* parent(0);
|
|
|
|
// get highest level parent
|
|
for ( parent = widget->parentWidget(); parent; parent = parent->parentWidget() ) {
|
|
|
|
if ( !( parent->isVisible() && parent->rect().isValid() ) ) continue;
|
|
|
|
// store in list
|
|
widgets.push_back( parent );
|
|
|
|
// stop at topLevel
|
|
if ( parent->isTopLevel() || parent->autoFillBackground() ) break;
|
|
|
|
}
|
|
|
|
if ( !parent ) parent = widget;
|
|
|
|
// painting
|
|
QPainter p(&pixmap);
|
|
p.setClipRect( rect );
|
|
const QBrush backgroundBrush = parent->palette().brush( parent->backgroundRole());
|
|
if ( backgroundBrush.style() == Qt::TexturePattern) {
|
|
|
|
p.drawTiledPixmap( rect, backgroundBrush.texture(), widget->mapTo( parent, rect.topLeft() ) );
|
|
|
|
}
|
|
else {
|
|
|
|
p.fillRect( pixmap.rect(), backgroundBrush );
|
|
|
|
}
|
|
|
|
if ( parent->isTopLevel() && parent->testAttribute(Qt::WA_StyledBackground)) {
|
|
QStyleOption option;
|
|
option.initFrom(parent);
|
|
option.rect = rect;
|
|
option.rect.translate( widget->mapTo( parent, rect.topLeft() ) );
|
|
p.translate(-option.rect.topLeft());
|
|
parent->style()->drawPrimitive ( QStyle::PE_Widget, &option, &p, parent );
|
|
}
|
|
|
|
p.end();
|
|
|
|
// draw all widgets in parent list
|
|
// backward
|
|
QPaintEvent event(rect);
|
|
for (int i = widgets.size() - 1; i>=0; i--) {
|
|
QWidget* w = widgets.at(i);
|
|
w->render(&pixmap, rect.topLeft());
|
|
// QPainter::setRedirected(w, &pixmap, widget->mapTo(w, rect.topLeft()));
|
|
// event = QPaintEvent(QRect(QPoint(), rect.size()));
|
|
// QCoreApplication::sendEvent(w, &event);
|
|
// QPainter::restoreRedirected(w);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// grabWidget
|
|
//---------------------------------------------------------
|
|
|
|
void TransitionWidget::grabWidget( QPixmap& pixmap, QWidget* widget, QRect& rect ) const
|
|
{
|
|
widget->render( &pixmap, pixmap.rect().topLeft(), rect, QWidget::DrawChildren );
|
|
}
|
|
|
|
//________________________________________________
|
|
void TransitionWidget::fade( const QPixmap& source, QPixmap& target, qreal opacity, const QRect& rect ) const
|
|
{
|
|
if ( target.isNull() || target.size() != size() ) {
|
|
target = QPixmap( size() );
|
|
}
|
|
|
|
// erase target
|
|
target.fill( Qt::transparent );
|
|
|
|
// check opacity
|
|
if ( opacity * 255 < 1 ) return;
|
|
|
|
QPainter p( &target );
|
|
p.setClipRect( rect );
|
|
|
|
// draw pixmap
|
|
p.drawPixmap( QPoint(0, 0), source );
|
|
|
|
// opacity mask (0.996 corresponds to 254/255)
|
|
if ( opacity <= 0.996 ) {
|
|
p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
|
|
QColor color( Qt::black );
|
|
color.setAlphaF( opacity );
|
|
p.fillRect(rect, color );
|
|
}
|
|
|
|
p.end();
|
|
return;
|
|
}
|
|
|