diff options
Diffstat (limited to 'kcontrol/style/menupreview.cpp')
| -rw-r--r-- | kcontrol/style/menupreview.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/kcontrol/style/menupreview.cpp b/kcontrol/style/menupreview.cpp new file mode 100644 index 000000000..a8a74c981 --- /dev/null +++ b/kcontrol/style/menupreview.cpp @@ -0,0 +1,166 @@ +/* + * Menu Transparency Preview Widget + * Copyright (C) 2002 Karol Szwed <gallium@kde.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License version 2 as published by the Free Software Foundation. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "menupreview.h" + +#include <qpainter.h> +#include <qimage.h> + +#include <kpixmap.h> +#include <kpixmapeffect.h> +#include <klocale.h> +#include <kimageeffect.h> +#include <kiconloader.h> + + +MenuPreview::MenuPreview( QWidget* parent, int opacity, PreviewMode pvm ) + : QWidget( parent, 0, WStyle_Customize | WRepaintNoErase ), + pixBackground(NULL), pixOverlay(NULL), pixBlended(NULL) +{ + setFixedSize(150, 150); + setFocusPolicy( NoFocus ); + + mode = pvm; + if (opacity < 0) opacity = 0; + if (opacity > 100) opacity = 100; + menuOpacity = opacity/100.0; + + pixBackground = new KPixmap(); + pixOverlay = new KPixmap(); + pixBlended = new KPixmap(); + + createPixmaps(); + blendPixmaps(); +} + +MenuPreview::~MenuPreview() +{ + delete pixBackground; + delete pixOverlay; + delete pixBlended; +} + +void MenuPreview::createPixmaps() +{ + int w = width()-2; + int h = height()-2; + + if (pixBackground) + pixBackground->resize( w, h ); + if (pixOverlay) + pixOverlay->resize( w, h ); + if (pixBlended) + pixBlended->resize( w, h ); + + QColorGroup cg = colorGroup(); + QColor c1 = cg.background(); + QColor c2 = cg.mid(); + + if (pixBackground) { + // Paint checkerboard + QPainter p; + p.begin(pixBackground); + for(int x=0; x < pixBackground->width(); x+=5) + for(int y=0; y < pixBackground->height(); y+=5) + p.fillRect( x, y, 5, 5, + (x % 2) ? + ((y % 2) ? c2 : c1 ) : // See the grid? ;-) + ((y % 2) ? c1 : c2 ) ); + KIconLoader* icl = KGlobal::iconLoader(); + QPixmap pix = icl->loadIcon("go", KIcon::Desktop, KIcon::SizeLarge, KIcon::ActiveState); + p.drawPixmap( (width()-2-pix.width())/2, (height()-2-pix.height())/2, pix ); + } + + if (pixOverlay) { + c1 = cg.button().light(110); + c2 = cg.button().dark(110); + KPixmapEffect::gradient( *pixOverlay, c1, c2, KPixmapEffect::VerticalGradient ); + } +} + +void MenuPreview::blendPixmaps() +{ + // Rebuild pixmaps, and repaint + if (pixBlended && pixBackground) + { + if (mode == Blend && pixOverlay) { + QImage src = pixOverlay->convertToImage(); + QImage dst = pixBackground->convertToImage(); + KImageEffect::blend(src, dst, menuOpacity); + pixBlended->convertFromImage( dst ); + } else if (mode == Tint) { + QColor clr = colorGroup().button(); + QImage dst = pixBackground->convertToImage(); + KImageEffect::blend(clr, dst, menuOpacity); + pixBlended->convertFromImage( dst ); + } + } +} + +void MenuPreview::setOpacity( int opacity ) +{ + if (opacity < 0 || opacity > 100) + return; + + if ((int)(menuOpacity*100) != opacity) { + menuOpacity = opacity/100.0; + blendPixmaps(); + repaint( false ); + } +} + +void MenuPreview::setPreviewMode( PreviewMode pvm ) +{ + if (mode != pvm) { + mode = pvm; + blendPixmaps(); + repaint( false ); + } +} + +void MenuPreview::paintEvent( QPaintEvent* /* pe */ ) +{ + // Paint the frame and blended pixmap + QColorGroup cg = colorGroup(); + int x2 = width()-1; + int y2 = height()-1; + + QPainter p(this); + p.setPen(cg.dark()); + p.drawLine(0, 0, x2, 0); + p.drawLine(0, 0, 0, y2); + p.setPen(cg.light()); + p.drawLine(1, y2, x2, y2); + p.drawLine(x2, 1, x2, y2); + + if (mode == NoEffect) + p.fillRect(1, 1, --x2, --y2, cg.button()); + else if (mode != NoEffect && pixBlended) + p.drawPixmap(1, 1, *pixBlended, 0, 0, --x2, --y2); + + QRect r = rect(); + r.moveBy(6,3); + p.setPen( cg.text() ); + p.drawText( r, AlignTop | AlignLeft, QString::number((int)(menuOpacity*100))+i18n("%") ); +} + +#include "menupreview.moc" + +// vim: set noet ts=4: + |