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127 lines
2.6 KiB
127 lines
2.6 KiB
/* ============================================================
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*
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* This file is a part of digiKam project
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* http://www.digikam.org
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*
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* Date : 2007-01-08
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* Description : Hue/Saturation preview widget
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*
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* Copyright (C) 2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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// TQt includes.
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#include <tqdrawutil.h>
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#include <tqimage.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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// KDE includes.
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#include <tdeapplication.h>
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#include <tdelocale.h>
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#include <kimageeffect.h>
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// Local includes.
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#include "hslmodifier.h"
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#include "dimg.h"
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#include "hspreviewwidget.h"
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#include "hspreviewwidget.moc"
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namespace DigikamImagesPluginCore
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{
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class HSPreviewWidgetPrivate
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{
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public:
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HSPreviewWidgetPrivate()
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{
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hue = 0.0;
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sat = 0.0;
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}
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int xBorder;
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double hue;
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double sat;
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TQPixmap pixmap;
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};
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HSPreviewWidget::HSPreviewWidget(TQWidget *parent, int xBorder)
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: TQWidget(parent, 0, TQt::WDestructiveClose)
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{
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d = new HSPreviewWidgetPrivate;
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d->xBorder = xBorder;
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}
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HSPreviewWidget::~HSPreviewWidget()
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{
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delete d;
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}
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void HSPreviewWidget::setHS(double hue, double sat)
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{
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d->hue = hue;
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d->sat = sat;
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updatePixmap();
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update();
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}
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void HSPreviewWidget::resizeEvent( TQResizeEvent * )
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{
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updatePixmap();
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}
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void HSPreviewWidget::paintEvent( TQPaintEvent * )
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{
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bitBlt(this, 0+d->xBorder, 0, &d->pixmap);
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}
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void HSPreviewWidget::updatePixmap()
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{
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int xSize = width()-2*d->xBorder;
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int ySize = height();
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Digikam::DImg image(xSize, ySize, false, false, 0, false);
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TQColor col;
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uint *p;
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for ( int s = ySize-1; s >= 0; s-- )
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{
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p = (uint *)image.scanLine(ySize - s - 1);
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for( int h = 0 ; h < xSize ; h++ )
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{
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col.setHsv( 359*h/(xSize-1), 255, 192 );
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*p = col.rgb();
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p++;
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}
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}
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Digikam::HSLModifier cmod;
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cmod.setHue(d->hue);
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cmod.setSaturation(d->sat);
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cmod.setLightness(0.0);
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cmod.applyHSL(image);
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d->pixmap = image.convertToPixmap();
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}
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} // NameSpace DigikamImagesPluginCore
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