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166 lines
3.3 KiB
166 lines
3.3 KiB
/***************************************************************************
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* Copyright Sean Meiners 2004 <Sean.Meiners@LinspireInc.com> *
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* Copyright (C) by *
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* - 2005: Christian Leh <moodwrod@web.de> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License (version 2) as *
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* published by the Free Software Foundation. (The original KSplash/ML *
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* codebase (upto version 0.95.3) is BSD-licensed.) *
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* *
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***************************************************************************/
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#include <tqwidget.h>
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#include <tqstyle.h>
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#include <tqtimer.h>
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#include <tqpainter.h>
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#include <tqimage.h>
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#include "effectwidget.h"
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TQImage* EffectWidget::bgImage = 0;
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EffectWidget::EffectWidget(TQWidget* parent, const char* name)
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:TQWidget(parent, name)
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{
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timer = 0;
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delayMS = 20;
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currentStep = 0;
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totalSteps = 0;
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playing = false;
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loop = false;
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beginOpacity = 20.0;
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endOpacity = 80.0;
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setBackgroundMode(NoBackground);
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setBackgroundOrigin(TQWidget::ParentOrigin);
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updateCache();
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}
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void EffectWidget::setImage(TQImage *i)
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{
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image = i;
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}
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void EffectWidget::setDelay(int delayInMS)
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{
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delayMS = delayInMS;
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if (timer)
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timer->changeInterval(delayMS);
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}
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void EffectWidget::setLoop(bool loop)
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{
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this->loop = loop;
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}
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void EffectWidget::setSteps(int steps)
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{
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totalSteps = steps;
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}
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void EffectWidget::start()
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{
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if ((playing) || (!image) || (totalSteps < 1) || (image->isNull()))
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return;
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if (!timer)
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{
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timer = new TQTimer(this);
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connect(timer,TQ_SIGNAL(timeout()),this,TQ_SLOT(timerTick()));
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}
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playing = true;
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update();
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timer->start(delayMS);
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}
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void EffectWidget::stop()
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{
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if ((!playing) || (!timer))
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return;
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timer->stop();
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playing = false;
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}
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void EffectWidget::setStart(float begin, float end, bool reverse)
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{
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beginOpacity = begin;
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endOpacity = end - beginOpacity;
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if (reverse)
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{
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float h = beginOpacity;
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beginOpacity = endOpacity;
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endOpacity = h;
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}
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}
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void EffectWidget::rewind()
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{
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stop();
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currentStep = 0;
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}
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void EffectWidget::timerTick()
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{
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if (loop)
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{
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currentStep ++;
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currentStep %= totalSteps;
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}
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else if (currentStep + 1 < totalSteps)
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currentStep ++;
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else
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timer->stop();
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update();
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}
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void EffectWidget::moveEvent(TQMoveEvent *)
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{
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updateCache();
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}
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void EffectWidget::resizeEvent(TQResizeEvent *)
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{
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updateCache();
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}
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void EffectWidget::updateCache()
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{
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if (!bgImage)
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return;
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TQPoint pos(mapToParent(TQPoint(0, 0)));
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background = bgImage->copy(pos.x(), pos.y(), width(), height());
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bitBlt(this, 0, 0, &background);
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}
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void EffectWidget::paintEvent(TQPaintEvent *)
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{
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if (background.isNull())
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return;
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TQImage upper = image->copy();
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TQImage lower = background.copy();
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KImageEffect::blendOnLower(upper, lower, KImageEffect::Centered, (currentStep + 1 == totalSteps) ? 1.0 : endOpacity / float(totalSteps) * float(currentStep) + beginOpacity);
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bitBlt(this, 0, 0, &lower);
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}
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#include "effectwidget.moc"
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