diff options
Diffstat (limited to 'chalk/plugins/filters/embossfilter/kis_emboss_filter.cpp')
| -rw-r--r-- | chalk/plugins/filters/embossfilter/kis_emboss_filter.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/chalk/plugins/filters/embossfilter/kis_emboss_filter.cpp b/chalk/plugins/filters/embossfilter/kis_emboss_filter.cpp new file mode 100644 index 000000000..0d6974e0c --- /dev/null +++ b/chalk/plugins/filters/embossfilter/kis_emboss_filter.cpp @@ -0,0 +1,179 @@ +/* + * This file is part of Chalk + * + * Copyright (c) 2004 Michael Thaler <michael.thaler@physik.tu-muenchen.de> + * + * ported from digikam, Copyright 2004 by Gilles Caulier, + * Original Emboss algorithm copyrighted 2004 by + * Pieter Z. Voloshyn <pieter_voloshyn at ame.com.br>. + * + * 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. + * + * 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; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <stdlib.h> +#include <vector> + +#include <tqpoint.h> +#include <tqspinbox.h> + +#include <tdelocale.h> +#include <kiconloader.h> +#include <kinstance.h> +#include <tdemessagebox.h> +#include <kstandarddirs.h> +#include <tdetempfile.h> +#include <kdebug.h> +#include <kgenericfactory.h> +#include <knuminput.h> + +#include <kis_doc.h> +#include <kis_image.h> +#include <kis_iterators_pixel.h> +#include <kis_layer.h> +#include <kis_filter_registry.h> +#include <kis_global.h> +#include <kis_types.h> +#include <kis_view.h> + +#include "kis_multi_integer_filter_widget.h" +#include "kis_emboss_filter.h" + +KisEmbossFilter::KisEmbossFilter() : KisFilter(id(), "emboss", i18n("&Emboss with Variable Depth...")) +{ +} + +void KisEmbossFilter::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* configuration, const TQRect& rect) +{ + Q_UNUSED(dst); + + + //read the filter configuration values from the KisFilterConfiguration object + TQ_UINT32 embossdepth = ((KisEmbossFilterConfiguration*)configuration)->depth(); + + //the actual filter function from digikam. It needs a pointer to a TQ_UINT8 array + //with the actual pixel data. + + Emboss(src, dst, rect, embossdepth); +} + +// This method have been ported from Pieter Z. Voloshyn algorithm code. + +/* Function to apply the Emboss effect + * + * data => The image data in RGBA mode. + * Width => Width of image. + * Height => Height of image. + * d => Emboss value + * + * Theory => This is an amazing effect. And the theory is very simple to + * understand. You get the diference between the colors and + * increase it. After this, get the gray tone + */ + +void KisEmbossFilter::Emboss(KisPaintDeviceSP src, KisPaintDeviceSP dst, const TQRect& rect, int d) +{ + float Depth = d / 10.0; + int R = 0, G = 0, B = 0; + uchar Gray = 0; + int Width = rect.width(); + int Height = rect.height(); + + setProgressTotalSteps(Height); + setProgressStage(i18n("Applying emboss filter..."),0); + + KisHLineIteratorPixel it = src->createHLineIterator(rect.x(), rect.y(), rect.width(), false); + KisHLineIteratorPixel dstIt = dst->createHLineIterator(rect.x(), rect.y(), rect.width(), true); + TQColor color1; + TQColor color2; + TQ_UINT8 opacity; + TQ_UINT8 opacity2; + + for (int y = 0 ; !cancelRequested() && (y < Height) ; ++y) + { + + for (int x = 0 ; !cancelRequested() && (x < Width) ; ++x, ++it, ++dstIt) + { + if (it.isSelected()) { + +// XXX: COLORSPACE_INDEPENDENCE + opacity = 0; + opacity2 = 0; + + src->colorSpace()->toTQColor(it.rawData(), &color1, &opacity); + + src->pixel(rect.x() + x + Lim_Max(x, 1, Width), rect.y() + y + Lim_Max(y, 1, Height), &color2, &opacity2); + + R = abs((int)((color1.red() - color2.red()) * Depth + (TQ_UINT8_MAX / 2))); + G = abs((int)((color1.green() - color2.green()) * Depth + (TQ_UINT8_MAX / 2))); + B = abs((int)((color1.blue() - color2.blue()) * Depth + (TQ_UINT8_MAX / 2))); + + Gray = CLAMP((R + G + B) / 3, 0, TQ_UINT8_MAX); + + dst->colorSpace()->fromTQColor(TQColor(Gray, Gray, Gray), opacity, dstIt.rawData()); + } + } + + it.nextRow(); + dstIt.nextRow(); + setProgress(y); + } + + setProgressDone(); +} + +// This method have been ported from Pieter Z. Voloshyn algorithm code. + +/* This function limits the max and min values + * defined by the developer + * + * Now => Original value + * Up => Increments + * Max => Maximum value + * + * Theory => This function is used in some functions to limit the + * "for step". E.g. I have a picture with 309 pixels (width), and + * my "for step" is 5. All the code go alright until reachs the + * w = 305, because in the next step w will go to 310, but we want + * to analize all the pixels. So, this function will reduce the + * "for step", when necessary, until reach the last possible value + */ + +int KisEmbossFilter::Lim_Max (int Now, int Up, int Max) +{ + --Max; + while (Now > Max - Up) + --Up; + return (Up); +} + +KisFilterConfigWidget * KisEmbossFilter::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP) +{ + vKisIntegerWidgetParam param; + param.push_back( KisIntegerWidgetParam( 10, 300, 30, i18n("Depth"), "depth" ) ); + KisFilterConfigWidget * w = new KisMultiIntegerFilterWidget(parent, id().id().ascii(), id().id().ascii(), param ); + TQ_CHECK_PTR(w); + return w; +} + +KisFilterConfiguration* KisEmbossFilter::configuration(TQWidget* nwidget) +{ + KisMultiIntegerFilterWidget* widget = (KisMultiIntegerFilterWidget*) nwidget; + if( widget == 0 ) + { + return new KisEmbossFilterConfiguration( 30 ); + } else { + return new KisEmbossFilterConfiguration( widget->valueAt( 0 ) ); + } +} |