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/*
* 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 <tqpainter.h>
#include <tqimage.h>
#include <kpixmap.h>
#include <kpixmapeffect.h>
#include <klocale.h>
#include <kimageeffect.h>
#include <kiconloader.h>
MenuPreview::MenuPreview( TQWidget* parent, int opacity, PreviewMode pvm )
: TQWidget( parent, 0, (WFlags)(WStyle_Customize | WRepaintNoErase) ),
pixBackground(NULL), pixOverlay(NULL), pixBlended(NULL)
{
setFixedSize(150, 150);
setFocusPolicy( TQ_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 );
TQColorGroup cg = colorGroup();
TQColor c1 = cg.background();
TQColor c2 = cg.mid();
if (pixBackground) {
// Paint checkerboard
TQPainter 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();
TQPixmap 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) {
TQImage src = pixOverlay->convertToImage();
TQImage dst = pixBackground->convertToImage();
KImageEffect::blend(src, dst, menuOpacity);
pixBlended->convertFromImage( dst );
} else if (mode == Tint) {
TQColor clr = colorGroup().button();
TQImage 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( TQPaintEvent* /* pe */ )
{
// Paint the frame and blended pixmap
TQColorGroup cg = colorGroup();
int x2 = width()-1;
int y2 = height()-1;
TQPainter 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);
TQRect r = rect();
r.moveBy(6,3);
p.setPen( cg.text() );
p.drawText( r, AlignTop | AlignLeft, TQString::number((int)(menuOpacity*100))+i18n("%") );
}
#include "menupreview.moc"
// vim: set noet ts=4:
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