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Diffstat (limited to 'kuickshow/src/imlibwidget.cpp')
| -rw-r--r-- | kuickshow/src/imlibwidget.cpp | 715 |
1 files changed, 715 insertions, 0 deletions
diff --git a/kuickshow/src/imlibwidget.cpp b/kuickshow/src/imlibwidget.cpp new file mode 100644 index 00000000..5b5cb84b --- /dev/null +++ b/kuickshow/src/imlibwidget.cpp @@ -0,0 +1,715 @@ +/* This file is part of the KDE project + Copyright (C) 1998-2002 Carsten Pfeiffer <pfeiffer@kde.org> + + 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, version 2. + + 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 "kuickdata.h" + +#include <sys/time.h> +#include <unistd.h> + +#include <stdlib.h> +#include <assert.h> + +#include <qcolor.h> +#include <qfile.h> +#include <qglobal.h> +#include <qimage.h> +#include <qobject.h> +#include <qpalette.h> + +#include <kcursor.h> +#include <kdebug.h> +#include <kfilemetainfo.h> +#include <kimageio.h> + +#include "filecache.h" +#include "kuickfile.h" +#include "kuickimage.h" +#include "imlibwidget.h" + +const int ImlibWidget::ImlibOffset = 256; + +ImlibWidget::ImlibWidget( ImData *_idata, QWidget *parent, const char *name ) : + QWidget( parent, name, WDestructiveClose ) +{ + idata = _idata; + deleteImData = false; + deleteImlibData = true; + + if ( !idata ) { // if no imlib configuration was given, create one ourself + idata = new ImData; + deleteImData = true; + } + + ImlibInitParams par; + + // PARAMS_PALETTEOVERRIDE taken out because of segfault in imlib :o( + par.flags = ( PARAMS_REMAP | PARAMS_VISUALID | + PARAMS_FASTRENDER | PARAMS_HIQUALITY | PARAMS_DITHER | + PARAMS_IMAGECACHESIZE | PARAMS_PIXMAPCACHESIZE ); + + Visual* defaultvis = DefaultVisual(x11Display(), x11Screen()); + + par.paletteoverride = idata->ownPalette ? 1 : 0; + par.remap = idata->fastRemap ? 1 : 0; + par.fastrender = idata->fastRender ? 1 : 0; + par.hiquality = idata->dither16bit ? 1 : 0; + par.dither = idata->dither8bit ? 1 : 0; + par.visualid = defaultvis->visualid; + uint maxcache = idata->maxCache; + + // 0 == no cache + par.imagecachesize = maxcache * 1024; + par.pixmapcachesize = maxcache * 1024; + + id = Imlib_init_with_params( x11Display(), &par ); + + init(); +} + + +ImlibWidget::ImlibWidget( ImData *_idata, ImlibData *_id, QWidget *parent, + const char *name ) + : QWidget( parent, name, WDestructiveClose ) +{ + id = _id; + idata = _idata; + deleteImData = false; + deleteImlibData = false; + + if ( !idata ) { + idata = new ImData; + deleteImData = true; + } + + init(); +} + + +void ImlibWidget::init() +{ + int w = 1; // > 0 for XCreateWindow + int h = 1; + myBackgroundColor = Qt::black; + m_kuim = 0L; + m_kuickFile = 0L; + + if ( !id ) + qFatal("ImlibWidget: Imlib not initialized, aborting."); + + setAutoRender( true ); + + setPalette( QPalette( myBackgroundColor )); + setBackgroundMode( PaletteBackground ); + + imageCache = new ImageCache( id, 4 ); // cache 4 images (FIXME?) + connect( imageCache, SIGNAL( sigBusy() ), SLOT( setBusyCursor() )); + connect( imageCache, SIGNAL( sigIdle() ), SLOT( restoreCursor() )); + + win = XCreateSimpleWindow(x11Display(), winId(), 0,0,w,h,0,0,0); +} + +ImlibWidget::~ImlibWidget() +{ + delete imageCache; + if ( deleteImlibData && id ) free ( id ); + if ( win ) XDestroyWindow( x11Display(), win ); + if ( deleteImData ) delete idata; +} + +KURL ImlibWidget::url() const +{ + if ( m_kuickFile ) + return m_kuickFile->url(); + + return KURL(); +} + +KuickFile * ImlibWidget::currentFile() const +{ + return m_kuickFile; +} + +// tries to load "file" and returns the according KuickImage * +// or 0L if unsuccessful +// Note that the given file MUST already be downloaded prior to calling this function +KuickImage * ImlibWidget::loadImageInternal( KuickFile * file ) +{ + assert( file->isAvailable() ); + + // apply default image modifications + mod.brightness = idata->brightness + ImlibOffset; + mod.contrast = idata->contrast + ImlibOffset; + mod.gamma = idata->gamma + ImlibOffset; + + KuickImage *kuim = imageCache->getKuimage( file, mod ); + if ( !kuim ) {// couldn't load file, maybe corrupt or wrong format + kdWarning() << "ImlibWidget: can't load image " << file->url().prettyURL() << endl; + return 0L; + } + + loaded( kuim ); // maybe upscale/downscale/rotate in subclasses + + return kuim; +} + +// overridden in subclass +void ImlibWidget::loaded( KuickImage * ) +{ +} + +bool ImlibWidget::loadImage( const KURL& url ) +{ + return loadImage( FileCache::self()->getFile( url )); +} + +bool ImlibWidget::loadImage( KuickFile * file ) +{ + if ( file->waitForDownload( this ) != KuickFile::OK) + return false; + + KuickImage *kuim = loadImageInternal( file ); + // FIXME - check everywhere if we have a kuim or not! + + if ( kuim ) { + m_kuim = kuim; + autoUpdate( true ); // -> updateWidget() -> updateGeometry() + m_kuickFile = file; + return true; + } + + return false; +} + + +bool ImlibWidget::cacheImage( const KURL& url ) +{ +// qDebug("cache image: %s", url.url().latin1()); + KuickFile *file = FileCache::self()->getFile( url ); + if ( file->isAvailable() ) + return cacheImage( file ); + else { + if ( !file->download() ) { + return false; + } + connect( file, SIGNAL( downloaded( KuickFile * )), SLOT( cacheImage( KuickFile * )) ); + return true; // optimistic + } +} + +bool ImlibWidget::cacheImage( KuickFile * file ) +{ +// qDebug("cache image: %s", file->url().url().latin1()); + KuickImage *kuim = loadImageInternal( file ); + if ( kuim ) { + kuim->renderPixmap(); + return true; + } + return false; +} + + +void ImlibWidget::showImage() +{ + XMapWindow( x11Display(), win ); + XSync( x11Display(), False ); +} + + +// -256..256 +void ImlibWidget::setBrightness( int factor ) +{ + mod.brightness = factor + ImlibOffset; + setImageModifier(); + + autoUpdate(); +} + + +// -256..256 +void ImlibWidget::setContrast( int factor ) +{ + mod.contrast = factor + ImlibOffset; + setImageModifier(); + + autoUpdate(); +} + + +// -256..256 +void ImlibWidget::setGamma( int factor ) +{ + mod.gamma = factor + ImlibOffset; + setImageModifier(); + + autoUpdate(); +} + + +Rotation ImlibWidget::rotation() const +{ + return m_kuim ? m_kuim->absRotation() : ROT_0; +} + +FlipMode ImlibWidget::flipMode() const +{ + return m_kuim ? m_kuim->flipMode() : FlipNone; +} + +void ImlibWidget::zoomImage( float factor ) +{ + if ( factor == 1 || factor == 0 || !m_kuim ) + return; + + int newWidth = (int) (factor * (float) m_kuim->width()); + int newHeight = (int) (factor * (float) m_kuim->height()); + + if ( canZoomTo( newWidth, newHeight ) ) + { + m_kuim->resize( newWidth, newHeight, idata->smoothScale ? KuickImage::SMOOTH : KuickImage::FAST ); + autoUpdate( true ); + } +} + +bool ImlibWidget::canZoomTo( int newWidth, int newHeight ) +{ + if ( newWidth <= 2 || newHeight <= 2 ) // minimum size for an image is 2x2 pixels + return false; + + return true; +} + + +void ImlibWidget::showImageOriginalSize() +{ + if ( !m_kuim ) + return; + + m_kuim->restoreOriginalSize(); + autoUpdate( true ); + + showImage(); +} + +bool ImlibWidget::autoRotate( KuickImage *kuim ) +{ + KFileMetaInfo metadatas( kuim->file().localFile() ); + if ( !metadatas.isValid() ) + return false; + + KFileMetaInfoItem metaitem = metadatas.item("Orientation"); + if ( !metaitem.isValid() +#if QT_VERSION >= 0x030100 + || metaitem.value().isNull() +#endif + ) + return false; + + + switch ( metaitem.value().toInt() ) + { + // Orientation: + // 1: normal + // 2: flipped horizontally + // 3: ROT 180 + // 4: flipped vertically + // 5: ROT 90 -> flip horizontally + // 6: ROT 90 + // 7: ROT 90 -> flip vertically + // 8: ROT 270 + + case 1: + default: + kuim->rotateAbs( ROT_0 ); + break; + case 2: + kuim->flipAbs( FlipHorizontal ); + break; + case 3: + kuim->rotateAbs( ROT_180 ); + break; + case 4: + kuim->flipAbs( FlipVertical ); + break; + case 5: + kuim->rotateAbs( ROT_90 ); + kuim->flipAbs( FlipHorizontal ); + break; + case 6: + kuim->rotateAbs( ROT_90 ); + break; + case 7: + kuim->rotateAbs( ROT_90 ); + kuim->flipAbs( FlipVertical ); + break; + case 8: + kuim->rotateAbs( ROT_270 ); + break; + } + + return true; +} + + +void ImlibWidget::setRotation( Rotation rot ) +{ + if ( m_kuim ) + { + if ( m_kuim->rotateAbs( rot ) ) + autoUpdate( true ); + } +} + + +// slots connected to Accels and popupmenu +void ImlibWidget::rotate90() +{ + if ( !m_kuim ) + return; + + m_kuim->rotate( ROT_90 ); + rotated( m_kuim, ROT_90 ); + autoUpdate( true ); +} + +void ImlibWidget::rotate180() +{ + if ( !m_kuim ) + return; + + m_kuim->rotate( ROT_180 ); + rotated( m_kuim, ROT_180 ); + autoUpdate(); +} + +void ImlibWidget::rotate270() +{ + if ( !m_kuim ) + return; + + m_kuim->rotate( ROT_270 ); + rotated( m_kuim, ROT_270 ); + autoUpdate( true ); +} + + +// should this go into a subclass? +void ImlibWidget::flipHoriz() +{ + if ( !m_kuim ) + return; + + m_kuim->flip( FlipHorizontal ); + autoUpdate(); +} + +void ImlibWidget::flipVert() +{ + if ( !m_kuim ) + return; + + m_kuim->flip( FlipVertical ); + autoUpdate(); +} +// end slots + + +void ImlibWidget::setFlipMode( int mode ) +{ + if ( !m_kuim ) + return; + + if ( m_kuim->flipAbs( mode ) ) + autoUpdate(); +} + + +void ImlibWidget::updateWidget( bool geometryUpdate ) +{ + if ( !m_kuim ) + return; + +// if ( geometryUpdate ) +// XUnmapWindow( x11Display(), win );// remove the old image -> no flicker + + XSetWindowBackgroundPixmap( x11Display(), win, m_kuim->pixmap() ); + + if ( geometryUpdate ) + updateGeometry( m_kuim->width(), m_kuim->height() ); + + XClearWindow( x11Display(), win ); + + showImage(); +} + + +// here we just use the size of m_kuim, may be overridden in subclass +void ImlibWidget::updateGeometry( int w, int h ) +{ + XMoveWindow( x11Display(), win, 0, 0 ); // center? + XResizeWindow( x11Display(), win, w, h ); + resize( w, h ); +} + + +void ImlibWidget::closeEvent( QCloseEvent *e ) +{ + e->accept(); + QWidget::closeEvent( e ); +} + + +void ImlibWidget::setBackgroundColor( const QColor& color ) +{ + myBackgroundColor = color; + setPalette( QPalette( myBackgroundColor )); + repaint( false); // FIXME - false? necessary at all? +} + +const QColor& ImlibWidget::backgroundColor() const +{ + return myBackgroundColor; +} + + +void ImlibWidget::setImageModifier() +{ + if ( !m_kuim ) + return; + + Imlib_set_image_modifier( id, m_kuim->imlibImage(), &mod ); + m_kuim->setDirty( true ); +} + +int ImlibWidget::imageWidth() const +{ + return m_kuim ? m_kuim->width() : 0; +} + +int ImlibWidget::imageHeight() const +{ + return m_kuim ? m_kuim->height() : 0; +} + +void ImlibWidget::setBusyCursor() +{ + if ( ownCursor() ) + m_oldCursor = cursor(); + else + m_oldCursor = QCursor(); + + setCursor( KCursor::waitCursor() ); +} + +void ImlibWidget::restoreCursor() +{ + if ( cursor().shape() == KCursor::waitCursor().shape() ) // only if nobody changed the cursor in the meantime! + setCursor( m_oldCursor ); +} + +// Reparenting a widget in Qt in fact means destroying the old X window of the widget +// and creating a new one. And since the X window used for the Imlib image is a child +// of this widget's X window, destroying this widget's X window would mean also +// destroying the Imlib image X window. Therefore it needs to be temporarily reparented +// away and reparented back to the new X window. +// Reparenting may happen e.g. when doing the old-style (non-NETWM) fullscreen changes. +void ImlibWidget::reparent( QWidget* parent, WFlags f, const QPoint& p, bool showIt ) +{ + XWindowAttributes attr; + XGetWindowAttributes( x11Display(), win, &attr ); + XUnmapWindow( x11Display(), win ); + XReparentWindow( x11Display(), win, attr.root, 0, 0 ); + QWidget::reparent( parent, f, p, showIt ); + XReparentWindow( x11Display(), win, winId(), attr.x, attr.y ); + if( attr.map_state != IsUnmapped ) + XMapWindow( x11Display(), win ); +} + +void ImlibWidget::rotated( KuickImage *, int ) +{ +} + +//---------- + + +// uhh ugly, we have two lists to map from filename to KuickImage :-/ +ImageCache::ImageCache( ImlibData *id, int maxImages ) +{ + myId = id; + idleCount = 0; + myMaxImages = maxImages; + kuickList.setAutoDelete( true ); + fileList.clear(); + kuickList.clear(); +} + + +ImageCache::~ImageCache() +{ + kuickList.clear(); + fileList.clear(); +} + + +void ImageCache::setMaxImages( int maxImages ) +{ + myMaxImages = maxImages; + int count = kuickList.count(); + while ( count > myMaxImages ) { + kuickList.removeLast(); + fileList.remove( fileList.fromLast() ); + count--; + } +} + +void ImageCache::slotBusy() +{ + if ( idleCount == 0 ) + emit sigBusy(); + + idleCount++; +} + +void ImageCache::slotIdle() +{ + idleCount--; + + if ( idleCount == 0 ) + emit sigIdle(); +} + + +KuickImage * ImageCache::getKuimage( KuickFile * file, + ImlibColorModifier mod ) +{ + if ( !file ) + return 0L; + + assert( file->isAvailable() ); // debug build + if ( file->waitForDownload( 0L ) != KuickFile::OK ) // and for users + return 0L; + + KuickImage *kuim = 0L; + int index = fileList.findIndex( file ); + if ( index != -1 ) { + if ( index == 0 ) + kuim = kuickList.at( 0 ); + + // need to reorder the lists, otherwise we might delete the current + // image when a new one is cached and the current one is the last! + else { + kuim = kuickList.take( index ); + kuickList.insert( 0, kuim ); + fileList.remove( file ); + fileList.prepend( file ); + } + + return kuim; + } + + if ( !kuim ) { + slotBusy(); + +// #ifndef NDEBUG +// struct timeval tms1, tms2; +// gettimeofday( &tms1, NULL ); +// #endif + + ImlibImage *im = Imlib_load_image( myId, + QFile::encodeName( file->localFile() ).data() ); + +// #ifndef NDEBUG +// gettimeofday( &tms2, NULL ); +// qDebug("*** LOADING image: %s, took %ld ms", file.latin1(), +// (tms2.tv_usec - tms1.tv_usec)/1000); +// #endif + + slotIdle(); + if ( !im ) { + slotBusy(); + im = loadImageWithQt( file->localFile() ); + slotIdle(); + if ( !im ) + return 0L; + } + + Imlib_set_image_modifier( myId, im, &mod ); + kuim = new KuickImage( file, im, myId ); + connect( kuim, SIGNAL( startRendering() ), SLOT( slotBusy() )); + connect( kuim, SIGNAL( stoppedRendering() ), SLOT( slotIdle() )); + + kuickList.insert( 0, kuim ); + fileList.prepend( file ); + } + + if ( kuickList.count() > (uint) myMaxImages ) { +// qDebug(":::: now removing from cache: %s", (*fileList.fromLast()).latin1()); + kuickList.removeLast(); + fileList.remove( fileList.fromLast() ); + } + + return kuim; +} + + +// Note: the returned image's filename will not be the real filename (which it usually +// isn't anyway, according to Imlib's sources). +ImlibImage * ImageCache::loadImageWithQt( const QString& fileName ) const +{ + kdDebug() << "Trying to load " << fileName << " with KImageIO..." << endl; + + KImageIO::registerFormats(); + + QImage image( fileName ); + if ( image.isNull() ) + return 0L; + if ( image.depth() != 32 ) { + image.setAlphaBuffer(false); + image = image.convertDepth(32); + + if ( image.isNull() ) + return 0L; + } + + // convert to 24 bpp (discard alpha) + int numPixels = image.width() * image.height(); + const int NUM_BYTES_NEW = 3; // 24 bpp + uchar *newImageData = new uchar[numPixels * NUM_BYTES_NEW]; + uchar *newData = newImageData; + + int w = image.width(); + int h = image.height(); + + for (int y = 0; y < h; y++) { + QRgb *scanLine = reinterpret_cast<QRgb *>( image.scanLine(y) ); + for (int x = 0; x < w; x++) { + const QRgb& pixel = scanLine[x]; + *(newData++) = qRed(pixel); + *(newData++) = qGreen(pixel); + *(newData++) = qBlue(pixel); + } + } + + ImlibImage *im = Imlib_create_image_from_data( myId, newImageData, NULL, + image.width(), image.height() ); + + delete[] newImageData; + + return im; +} + +#include "imlibwidget.moc" |