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Diffstat (limited to 'kwin-styles/glow/glowbutton.cpp')
| -rw-r--r-- | kwin-styles/glow/glowbutton.cpp | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/kwin-styles/glow/glowbutton.cpp b/kwin-styles/glow/glowbutton.cpp new file mode 100644 index 00000000..41f53386 --- /dev/null +++ b/kwin-styles/glow/glowbutton.cpp @@ -0,0 +1,339 @@ +/*************************************************************************** + glowbutton.cpp - description + ------------------- + begin : Thu Sep 6 2001 + copyright : (C) 2001 by Henning Burchardt + email : h_burchardt@gmx.net + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include <math.h> +#include <iostream> +#include <vector> +#include <qmap.h> +#include <qpixmap.h> +#include <qpixmapcache.h> +#include <qbitmap.h> +#include <qpainter.h> +#include <qimage.h> +#include <qtimer.h> +#include <qtooltip.h> +#include <kdecoration.h> +#include <kiconeffect.h> +#include "glowbutton.h" + +namespace Glow +{ + +//----------------------------------------------------------------------------- +// PixmapCache +//----------------------------------------------------------------------------- + +QMap<QString, const QPixmap*> PixmapCache::m_pixmapMap; + +const QPixmap* PixmapCache::find(const QString& key) +{ + QMap<QString, const QPixmap*>::const_iterator it = + m_pixmapMap.find(key); + if( it != m_pixmapMap.end() ) + return *it; + else + return 0; +} + +void PixmapCache::insert(const QString& key, const QPixmap *pixmap) +{ + m_pixmapMap[key] = pixmap; +} + +void PixmapCache::erase(const QString& key) +{ + QMap<QString, const QPixmap*>::iterator it = + m_pixmapMap.find(key); + if (it != m_pixmapMap.end()) + { + delete *it; + m_pixmapMap.erase(it); + } +} + +void PixmapCache::clear() +{ + // delete all pixmaps in the cache + QMap<QString, const QPixmap*>::const_iterator it + = m_pixmapMap.begin(); + for(; it != m_pixmapMap.end(); ++it) + delete *it; + m_pixmapMap.clear(); +} + +//----------------------------------------------------------------------------- +// GlowButton +//----------------------------------------------------------------------------- + +GlowButton::GlowButton(QWidget *parent, const char *name, + const QString& tip, const int realizeBtns) + : QButton(parent, name) +{ + m_realizeButtons = realizeBtns; + + _steps = 0; + m_updateTime = 50; + m_pixmapName = QString::null; + + m_timer = new QTimer(this); + connect(m_timer, SIGNAL(timeout()), this, SLOT(slotTimeout())); + m_pos = 0; + m_timerStatus = Stop; + + setTipText (tip); + setCursor(arrowCursor); +} + +GlowButton::~GlowButton() +{ +} + +void GlowButton::setTipText( const QString& tip ) +{ + if (KDecoration::options()->showTooltips()) + { + QToolTip::remove( this ); + QToolTip::add( this, tip ); + } +} + +QString GlowButton::getPixmapName() const +{ + return m_pixmapName; +} + +Qt::ButtonState GlowButton::lastButton() const +{ + return _last_button; +} + +void GlowButton::setPixmapName(const QString& pixmapName) +{ + m_pixmapName = pixmapName; + + const QPixmap *pixmap = PixmapCache::find(pixmapName); + if( ! pixmap ) + return; + + // set steps + _steps = pixmap->height()/pixmap->width() - 1; + + repaint(false); +} + +void GlowButton::paintEvent( QPaintEvent *e ) +{ + QWidget::paintEvent(e); + const QPixmap *pixmap = PixmapCache::find(m_pixmapName); + if( pixmap != 0 ) + { + int pos = m_pos>=0?m_pos:-m_pos; + QPainter p; + QPixmap pm (pixmap->size()); + p.begin(&pm); + const QPixmap * bg_pixmap = PixmapCache::find( + QString::number(parentWidget()->winId())); + p.drawPixmap (0, 0, *bg_pixmap, x(), y(), width(), height()); + p.drawPixmap (0, 0, *pixmap, 0, pos*height(), width(), height()); + p.end(); + p.begin(this); + p.drawPixmap (0, 0, pm); + p.end(); + } +} + +void GlowButton::enterEvent( QEvent *e ) +{ + if( m_pos<0 ) + m_pos=-m_pos; + m_timerStatus = Run; + if( ! m_timer->isActive() ) + m_timer->start(m_updateTime); + QButton::enterEvent(e); +} + +void GlowButton::leaveEvent( QEvent *e ) +{ + m_timerStatus = Stop; + if( ! m_timer->isActive() ) + m_timer->start(m_updateTime); + QButton::leaveEvent(e); +} + +void GlowButton::mousePressEvent( QMouseEvent *e ) +{ + _last_button = e->button(); + if( m_timer->isActive() ) + m_timer->stop(); + m_pos = _steps; + repaint(false); + // without pretending LeftButton, clicking on the button with MidButton + // or RightButton would cause unwanted titlebar action + QMouseEvent me (e->type(), e->pos(), e->globalPos(), + (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state()); + QButton::mousePressEvent(&me); +} + +void GlowButton::mouseReleaseEvent( QMouseEvent *e ) +{ + _last_button = e->button(); + QPoint p = mapToParent(mapFromGlobal(e->globalPos())); + if( ! m_timer->isActive() ) { + m_timer->start(m_updateTime); + } + if( ! geometry().contains(p) ) { + m_timerStatus = Stop; + } + QMouseEvent me (e->type(), e->pos(), e->globalPos(), + (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state()); + QButton::mouseReleaseEvent(&me); +} + +void GlowButton::slotTimeout() +{ + repaint(false); + + if( m_pos>=_steps-1 ) { + m_pos = -m_pos; + } + if( m_timerStatus==Stop ) { + if( m_pos==0 ) { + m_timer->stop(); + return; + } else if( m_pos>0 ) { + m_pos = -m_pos; + } + } + + m_pos++; +} + +//----------------------------------------------------------------------------- +// GlowButtonFactory +//----------------------------------------------------------------------------- + +GlowButtonFactory::GlowButtonFactory() +{ + _steps = 20; +} + +int GlowButtonFactory::getSteps() +{ + return _steps; +} + +void GlowButtonFactory::setSteps(int steps) +{ + _steps = steps; +} + +QPixmap * GlowButtonFactory::createGlowButtonPixmap( + const QImage & bg_image, + const QImage & fg_image, + const QImage & glow_image, + const QColor & color, + const QColor & glow_color) +{ + if (bg_image.size() != fg_image.size() + || fg_image.size() != glow_image.size()) { + std::cerr << "Image size error" << std::endl; + return new QPixmap(); + } + + QImage colorized_bg_image = bg_image.copy(); + KIconEffect::colorize (colorized_bg_image, color, 1.0); + + int w = colorized_bg_image.width(); + int h = colorized_bg_image.height(); + + QImage image (w, (_steps+1)*h, 32); + image.setAlphaBuffer (true); + for (int i=0; i<_steps+1; ++i) { + for (int y=0; y<h; ++y) { + uint * src1_line = (uint*) colorized_bg_image.scanLine (y); + uint * src2_line = (uint*) fg_image.scanLine (y); + uint * dst_line = (uint*) image.scanLine (i*h+y); + for (int x=0; x<w; ++x) { + int r = qRed (*(src1_line+x)); + int g = qGreen (*(src1_line+x)); + int b = qBlue (*(src1_line+x)); + int a = QMAX (qAlpha(*(src1_line+x)),qGray(*(src2_line+x))); + *(dst_line+x) = qRgba (r, g, b, a); + } + } + } + QPixmap * pixmap = new QPixmap (image); + QPainter painter (pixmap); + + bool dark = (qGray(color.rgb()) <= 127); + QImage fg_img (w, h, 32); + fg_img.setAlphaBuffer (true); + for (int y=0; y<h; ++y) { + uint * src_line = (uint*) fg_image.scanLine (y); + uint * dst_line = (uint*) fg_img.scanLine (y); + for (int x=0; x<w; ++x) { + int alpha = qGray (*(src_line+x)); + if (dark) + *(dst_line+x) = qRgba (255, 255, 255, alpha); + else + *(dst_line+x) = qRgba (0, 0, 0, alpha); + } + } + + int r = glow_color.red(); + int g = glow_color.green(); + int b = glow_color.blue(); + QImage glow_img (w, h, 32); + glow_img.setAlphaBuffer (true); + for (int i=0; i<_steps; ++i) { + painter.drawImage (0, i*h, fg_img); + for (int y=0; y<h; ++y) { + uint * src_line = (uint*) glow_image.scanLine(y); + uint * dst_line = (uint*) glow_img.scanLine(y); + for (int x=0; x<w; ++x) { + int alpha = + (int) (qGray (*(src_line+x)) * ((double) i/_steps)); + *(dst_line+x) = qRgba (r, g, b, alpha); + } + } + painter.drawImage (0, i*h, glow_img); + } + painter.drawImage (0, _steps*h, fg_img); + for (int y=0; y<h; ++y) { + uint * src_line = (uint*) glow_image.scanLine (y); + uint * dst_line = (uint*) glow_img.scanLine (y); + for (int x=0; x<w; ++x) { + int alpha = qGray (*(src_line+x)); + *(dst_line+x) = qRgba (r, g, b, alpha); + } + } + painter.drawImage (0, _steps*h, glow_img); + + return pixmap; +} + +GlowButton* GlowButtonFactory::createGlowButton( + QWidget *parent, const char* name, const QString& tip, const int realizeBtns) +{ + GlowButton *glowButton = new GlowButton(parent, name, tip, realizeBtns); + return glowButton; +} + +} + +#include "glowbutton.moc" + |