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Diffstat (limited to 'src/komposeimage.cpp')
| -rw-r--r-- | src/komposeimage.cpp | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/komposeimage.cpp b/src/komposeimage.cpp new file mode 100644 index 0000000..c542796 --- /dev/null +++ b/src/komposeimage.cpp @@ -0,0 +1,256 @@ +// +// C++ Implementation: komposeimage +// +// Description: +// +// +// Author: Hans Oischinger <oisch@sourceforge.net>, (C) 2004 +// +// Copyright: See COPYING file that comes with this distribution +// +// +#include "komposeimage.h" +#include "komposesettings.h" +#include <kdebug.h> + + + +KomposeImage::KomposeImage( Imlib_Image& im ) + : QObject( 0L, 0L ), + bhasImage(true), + bhasSourcePixmap(false), + lasteffect( IEFFECT_NONE ), + myWidth(-1), + myHeight(-1) +{ + myIm = im; + imlib_context_set_image( myIm ); + myWidth = imlib_image_get_width(); + myHeight = imlib_image_get_height(); + myIsDirty = true; + + init(); +} + + +KomposeImage::KomposeImage() + : QObject( 0L, 0L ), + bhasImage(false), + bhasSourcePixmap(false), + lasteffect( IEFFECT_NONE ), + myWidth(-1), + myHeight(-1) +{ + myIsDirty = false; + init(); +} + +KomposeImage::~KomposeImage() +{ + clearCached(); +} + +/* + * Call this function when the Imlib image and the qpixmap that is drawn is not needed anymore + * (normally when Komposé view is closed) + */ +void KomposeImage::clearCached() +{ + if ( bhasSourcePixmap && bhasImage) + { + // Delete image as it takes a lot of ram + bhasImage = false; + imlib_context_set_image( myIm ); + imlib_free_image(); + } + + if ( !KomposeSettings::instance()->getCacheScaledPixmaps() ) + { + myQPixmap.resize(0,0); + myIsDirty = true; + } +} + +void KomposeImage::init() +{ + myOrigWidth = myWidth; + myOrigHeight = myHeight; + + myQPixmap.setOptimization( QPixmap::BestOptim ); + + // Create highlight color modifier + cmHighlight = imlib_create_color_modifier(); + imlib_context_set_color_modifier(cmHighlight); + imlib_modify_color_modifier_brightness(0.13); + + cmMinimized = imlib_create_color_modifier(); + imlib_context_set_color_modifier(cmMinimized); + imlib_modify_color_modifier_brightness(-0.13); + imlib_context_set_color_modifier(0); +} + +void KomposeImage::setImage( Imlib_Image &im ) +{ + if (bhasImage) + { + imlib_context_set_image( myIm ); + imlib_free_image(); + } + + myIm = im; + if ( !bhasSourcePixmap ) // SourcePixmap overrides Image + { + imlib_context_set_image( myIm ); + myOrigWidth = imlib_image_get_width(); + myOrigHeight = imlib_image_get_height(); + qDebug("KomposeTask::setImage() - Set Image: size:" << myWidth << "x" << myHeight << endl; + } + + myIsDirty = true; + bhasImage = true; +} + +void KomposeImage::setImage( QPixmap &pm ) +{ + mySourceQPixmap = pm; + bhasSourcePixmap = true; + + myOrigWidth = pm.width(); + myOrigHeight = pm.height(); + + myIsDirty = true; +} + +void KomposeImage::createImageFromPixmap() +{ + if ( !bhasSourcePixmap ) + return; + + qDebug("KomposeImage::createImageFromPixmap()"); + imlib_context_set_drawable( mySourceQPixmap.handle() ); + + if ( !KomposeSettings::instance()->getImageEffects() ) + { + Imlib_Image img = imlib_create_image_from_drawable((Pixmap)0, 0, 0, mySourceQPixmap.width(), mySourceQPixmap.height(), 1); + + setImage( img ); + } + else + { + Imlib_Image imgOrig = imlib_create_image_from_drawable((Pixmap)0, 0, 0, mySourceQPixmap.width(), mySourceQPixmap.height(), 1); + + imlib_context_set_anti_alias(1); + + imlib_context_set_image( imgOrig ); + Imlib_Image img = imlib_create_cropped_scaled_image(0, 0, mySourceQPixmap.width(), mySourceQPixmap.height(), myWidth, myHeight); + imlib_free_image(); + + setImage( img ); + } +} + +void KomposeImage::resize( int width, int height ) +{ + if ( myWidth == width && myHeight == height ) + return; + + if (bhasImage) + { + bhasImage = false; + imlib_context_set_image( myIm ); + imlib_free_image(); + } + + myWidth = width; + myHeight = height; + myIsDirty = true; +} + +QPixmap* KomposeImage::qpixmap( int effect ) +{ + if ( KomposeSettings::instance()->getImageEffects() && (lasteffect != effect ) ) + { + myIsDirty = true; + lasteffect = effect; + } + + if ( myIsDirty) + renderPixmap(); + + return &myQPixmap; +} + + +void KomposeImage::renderPixmap() +{ + // Is image dirty? has a width been set? + if ( !myIsDirty || myWidth==-1 ) + return; + + emit startRendering(); + + if ( !bhasImage && bhasSourcePixmap ) + createImageFromPixmap(); + else if ( !bhasImage && !bhasSourcePixmap ) + return; + + qDebug("KomposeImage::renderPixmap() - Creating %dx%d pixmap", myWidth, myHeight); + + imlib_context_set_image( myIm ); + imlib_image_set_has_alpha(0); + + if ( KomposeSettings::instance()->getImageEffects() ) + applyEffect(); + + myQPixmap.resize( myWidth, myHeight); + + imlib_context_set_drawable(myQPixmap.handle()); + imlib_context_set_anti_alias(1); + imlib_render_image_on_drawable_at_size(0, 0, myWidth, myHeight); + + emit stoppedRendering(); + + myIsDirty = false; +} + +void KomposeImage::applyEffect() +{ + imlib_context_set_color_modifier(0); + + if ( lasteffect == IEFFECT_MINIMIZED || lasteffect == IEFFECT_MINIMIZED_AND_TITLE ) + { + //FIXME: maybe there is a faster tint filter?! + imlib_context_set_color_modifier(cmMinimized); + } + + if ( lasteffect == IEFFECT_HIGHLIGHT ) + { + //FIXME: maybe there is a faster tint filter?! + imlib_context_set_color_modifier(cmHighlight); + } + + if ( lasteffect == IEFFECT_TITLE || lasteffect == IEFFECT_MINIMIZED_AND_TITLE ) + { + /* we can blend stuff now */ + imlib_context_set_blend(1); + /* our color range */ + Imlib_Color_Range range; + + /* draw a gradient on top of things at the top left of the window */ + /* create a range */ + range = imlib_create_color_range(); + imlib_context_set_color_range(range); + imlib_context_set_color(255, 255, 255, 0); + imlib_add_color_to_color_range(0); + imlib_context_set_color(255, 255, 255, 255); + imlib_add_color_to_color_range(1000); + /* draw the range */ + imlib_context_set_image(myIm); + imlib_image_fill_color_range_rectangle(0, 0, myWidth, KomposeSettings::instance()->getWindowTitleFontAscent() * 3, -180.0); + /* free it */ + imlib_free_color_range(); + } + +} + +#include "komposeimage.moc" |