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Diffstat (limited to 'kcontrol/background/bgrender.cpp')
| -rw-r--r-- | kcontrol/background/bgrender.cpp | 1359 |
1 files changed, 1359 insertions, 0 deletions
diff --git a/kcontrol/background/bgrender.cpp b/kcontrol/background/bgrender.cpp new file mode 100644 index 000000000..f17892dce --- /dev/null +++ b/kcontrol/background/bgrender.cpp @@ -0,0 +1,1359 @@ +/* vi: ts=8 sts=4 sw=4 + * kate: space-indent on; tab-width 8; indent-width 4; indent-mode cstyle; + * + * This file is part of the KDE project, module kdesktop. + * Copyright (C) 1999 Geert Jansen <g.t.jansen@stud.tue.nl> + * + * You can Freely distribute this program under the GNU Library General + * Public License. See the file "COPYING.LIB" for the exact licensing terms. + */ + +#include <config.h> + +#include <time.h> +#include <stdlib.h> +#include <utime.h> + +#include <qtimer.h> +#include <qpainter.h> +#include <qimage.h> +#include <qfileinfo.h> +#include <qdir.h> + +#include <dcopclient.h> +#include <kapplication.h> +#include <kdebug.h> +#include <kstandarddirs.h> +#include <kimageeffect.h> +#include <kprocess.h> +#include <kpixmapio.h> +#include <ktempfile.h> +#include <kcursor.h> +#include <kmimetype.h> +#include <kfilemetainfo.h> + +#ifdef HAVE_LIBART +#include <ksvgiconengine.h> +#endif + +#include "bgdefaults.h" +#include "bghash.h" +#include "bgrender.h" + +#include <X11/Xlib.h> + +#include <config.h> + +/**** KBackgroundRenderer ****/ + + +KBackgroundRenderer::KBackgroundRenderer(int desk, int screen, bool drawBackgroundPerScreen, KConfig *config) + : KBackgroundSettings(desk, screen, drawBackgroundPerScreen, config) +{ + m_State = 0; + m_isBusyCursor = false; + m_enableBusyCursor = false; + m_pDirs = KGlobal::dirs(); + m_rSize = m_Size = drawBackgroundPerScreen ? + QApplication::desktop()->screenGeometry(screen).size() : QApplication::desktop()->size(); + m_pProc = 0L; + m_Tempfile = 0L; + m_bPreview = false; + m_Cached = false; + m_TilingEnabled = false; + + m_pTimer = new QTimer(this); + connect(m_pTimer, SIGNAL(timeout()), SLOT(render())); +} + + +KBackgroundRenderer::~KBackgroundRenderer() +{ + cleanup(); + delete m_Tempfile; + m_Tempfile = 0; +} + + +void KBackgroundRenderer::setSize(const QSize &size) +{ + m_rSize = m_Size = size; +} + +/* + * Re-configure because the desktop has been resized. + */ +void KBackgroundRenderer::desktopResized() +{ + m_State = 0; + m_rSize = drawBackgroundPerScreen() ? + QApplication::desktop()->screenGeometry(screen()).size() : QApplication::desktop()->size(); + if( !m_bPreview ) + m_Size = m_rSize; +} + + +void KBackgroundRenderer::tile(QImage& dest, QRect rect, const QImage& src) +{ + rect &= dest.rect(); + + int x, y; + int h = rect.height(), w = rect.width(); + int offx = rect.x(), offy = rect.y(); + int sw = src.width(), sh = src.height(); + + for (y=offy; y<offy+h; y++) + for (x=offx; x<offx+w; x++) + dest.setPixel(x, y, src.pixel(x%sw, y%sh)); +} + + +/* + * Build a command line to run the program. + */ + +QString KBackgroundRenderer::buildCommand() +{ + QString num; + int pos = 0; + + QString cmd; + if (m_bPreview) + cmd = previewCommand(); + else + cmd = command(); + + if (cmd.isEmpty()) + return QString(); + + while ((pos = cmd.find('%', pos)) != -1) { + + if (pos == (int) (cmd.length() - 1)) + break; + + switch (cmd.at(pos+1).latin1()) { + case 'f': + createTempFile(); + cmd.replace(pos, 2, KShellProcess::quote(m_Tempfile->name())); + pos += m_Tempfile->name().length() - 2; + break; + + case 'x': + num.setNum(m_Size.width()); + cmd.replace(pos, 2, num); + pos += num.length() - 2; + break; + + case 'y': + num.setNum(m_Size.height()); + cmd.replace(pos, 2, num); + pos += num.length() - 2; + break; + + case '%': + cmd.replace(pos, 2, "%"); + pos--; + break; + default: + ++pos; // avoid infinite loop + break; + } + + } + return cmd; +} + + +/* + * Create a background tile. If the background mode is `Program', + * this is asynchronous. + */ +int KBackgroundRenderer::doBackground(bool quit) +{ + if (m_State & BackgroundDone) + return Done; + int bgmode = backgroundMode(); + + if (!enabled()) + bgmode= Flat; + + if (quit) { + if (bgmode == Program && m_pProc) + m_pProc->kill(); + return Done; + } + + int retval = Done; + QString file; + + static unsigned int tileWidth = 0; + static unsigned int tileHeight = 0; + if( tileWidth == 0 ) + { + int tile_val = QPixmap::defaultDepth() >= 24 ? 1 : 2; + // some dithering may be needed even with bpb==15/16, so don't use tileWidth==1 + // for them + // with tileWidth>2, repainting the desktop causes nasty effect (XFree86 4.1.0 ) + if( XQueryBestTile( qt_xdisplay(), qt_xrootwin(), tile_val, tile_val, + &tileWidth, &tileHeight ) != Success ) + tileWidth = tileHeight = tile_val; // some defaults + } + switch (bgmode) { + + case Flat: + // this can be tiled correctly without problems + m_Background.create( tileWidth, tileHeight, 32); + m_Background.fill(colorA().rgb()); + break; + + case Pattern: + { + if (pattern().isEmpty()) + break; + file = m_pDirs->findResource("dtop_pattern", pattern()); + if (file.isEmpty()) + break; + + m_Background.load(file); + if (m_Background.isNull()) + break; + int w = m_Background.width(); + int h = m_Background.height(); + if ((w > m_Size.width()) || (h > m_Size.height())) { + w = QMIN(w, m_Size.width()); + h = QMIN(h, m_Size.height()); + m_Background = m_Background.copy(0, 0, w, h); + } + KImageEffect::flatten(m_Background, colorA(), colorB(), 0); + break; + } + case Program: + if (m_State & BackgroundStarted) + break; + m_State |= BackgroundStarted; + createTempFile(); + + file = buildCommand(); + if (file.isEmpty()) + break; + + delete m_pProc; + m_pProc = new KShellProcess; + *m_pProc << file; + connect(m_pProc, SIGNAL(processExited(KProcess *)), + SLOT(slotBackgroundDone(KProcess *))); + m_pProc->start(KShellProcess::NotifyOnExit); + retval = Wait; + break; + + case HorizontalGradient: + { + QSize size = m_Size; + // on <16bpp displays the gradient sucks when tiled because of dithering + if( canTile()) + size.setHeight( tileHeight ); + m_Background = KImageEffect::gradient(size, colorA(), colorB(), + KImageEffect::HorizontalGradient, 0); + break; + } + case VerticalGradient: + { + QSize size = m_Size; + // on <16bpp displays the gradient sucks when tiled because of dithering + if( canTile()) + size.setWidth( tileWidth ); + m_Background = KImageEffect::gradient(size, colorA(), colorB(), + KImageEffect::VerticalGradient, 0); + break; + } + case PyramidGradient: + m_Background = KImageEffect::gradient(m_Size, colorA(), colorB(), + KImageEffect::PyramidGradient, 0); + break; + + case PipeCrossGradient: + m_Background = KImageEffect::gradient(m_Size, colorA(), colorB(), + KImageEffect::PipeCrossGradient, 0); + break; + + case EllipticGradient: + m_Background = KImageEffect::gradient(m_Size, colorA(), colorB(), + KImageEffect::EllipticGradient, 0); + break; + } + + if (retval == Done) + m_State |= BackgroundDone; + + return retval; +} + + +int KBackgroundRenderer::doWallpaper(bool quit) +{ + if (m_State & WallpaperDone) + return Done; + + if (quit) + // currently no asynch. wallpapers + return Done; + + int wpmode= enabled()?wallpaperMode():NoWallpaper; + + m_Wallpaper = QImage(); + if (wpmode != NoWallpaper) { +wp_load: + if (currentWallpaper().isEmpty()) { + wpmode = NoWallpaper; + goto wp_out; + } + QString file = m_pDirs->findResource("wallpaper", currentWallpaper()); + if (file.isEmpty()) { + wpmode = NoWallpaper; + goto wp_out; + } + + // _Don't_ use KMimeType, as it relies on ksycoca which we really + // don't want in krootimage (kdm context). + //if ( KMimeType::findByPath( file )->is( "image/svg+xml" ) ) { + if (file.endsWith(".svg") || file.endsWith(".svgz")) { +#ifdef HAVE_LIBART + // Special stuff for SVG icons + KSVGIconEngine* svgEngine = new KSVGIconEngine(); + + //FIXME + //ksvgiconloader doesn't seem to let us find out the + //ratio of width to height so for the most part we just + //assume it's a square + int svgWidth; + int svgHeight; + switch (wpmode) + { + case Centred: + case CentredAutoFit: + svgHeight = (int)(m_Size.height() * 0.8); + svgWidth = svgHeight; + break; + case Tiled: + case CenterTiled: + svgHeight = (int)(m_Size.height() * 0.5); + svgWidth = svgHeight; + break; + case Scaled: + svgHeight = m_Size.height(); + svgWidth = m_Size.width(); + break; + case CentredMaxpect: + case ScaleAndCrop: + case TiledMaxpect: + svgHeight = m_Size.height(); + svgWidth = svgHeight; + break; + case NoWallpaper: + default: + kdWarning() << k_funcinfo << "unknown diagram type" << endl; + svgHeight = m_Size.height(); + svgWidth = svgHeight; + break; + } + //FIXME hack due to strangeness with + //background control modules + if ( svgHeight < 200 ) { + svgHeight *= 6; + svgWidth *= 6; + } + + if (svgEngine->load(svgWidth, svgHeight, file )) { + QImage *image = svgEngine->image(); + m_Wallpaper = *image; + delete image; + } else { + kdWarning() << "failed to load SVG file " << file << endl; + } + + delete svgEngine; +#else //not libart + kdWarning() << k_funcinfo + << "tried to load SVG file but libart not installed" << endl; +#endif + } else { + m_Wallpaper.load(file); + } + if (m_Wallpaper.isNull()) { + if (discardCurrentWallpaper()) + goto wp_load; + wpmode = NoWallpaper; + goto wp_out; + } + m_Wallpaper = m_Wallpaper.convertDepth(32, DiffuseAlphaDither); + + // If we're previewing, scale the wallpaper down to make the preview + // look more like the real desktop. + if (m_bPreview) { + int xs = m_Wallpaper.width() * m_Size.width() / m_rSize.width(); + int ys = m_Wallpaper.height() * m_Size.height() / m_rSize.height(); + if ((xs < 1) || (ys < 1)) + { + xs = ys = 1; + } + if( m_Wallpaper.size() != QSize( xs, ys )) + m_Wallpaper = m_Wallpaper.smoothScale(xs, ys); + } + + // HACK: Use KFileMetaInfo only when we're attached to DCOP. + // KFileMetaInfo needs ksycoca and so on, but this code is + // used also in krootimage (which in turn is used by kdm). + if( kapp->dcopClient()->isAttached()) { + KFileMetaInfo metaInfo(file); + if (metaInfo.isValid() && metaInfo.item("Orientation").isValid()) { + switch (metaInfo.item("Orientation").string().toInt()) { + case 2: + // Flipped horizontally + m_Wallpaper = m_Wallpaper.mirror(true, false); + break; + case 3: + // Rotated 180 degrees + m_Wallpaper = KImageEffect::rotate(m_Wallpaper, KImageEffect::Rotate180); + break; + case 4: + // Flipped vertically + m_Wallpaper = m_Wallpaper.mirror(false, true); + break; + case 5: + // Rotated 90 degrees & flipped horizontally + m_Wallpaper = KImageEffect::rotate(m_Wallpaper, KImageEffect::Rotate90).mirror(true, false); + break; + case 6: + // Rotated 90 degrees + m_Wallpaper = KImageEffect::rotate(m_Wallpaper, KImageEffect::Rotate90); + break; + case 7: + // Rotated 90 degrees & flipped vertically + m_Wallpaper = KImageEffect::rotate(m_Wallpaper, KImageEffect::Rotate90).mirror(false, true); + break; + case 8: + // Rotated 270 degrees + m_Wallpaper = KImageEffect::rotate(m_Wallpaper, KImageEffect::Rotate270); + break; + case 1: + default: + // Normal or invalid orientation + break; + } + } + } + } +wp_out: + + if (m_Background.isNull()) { + m_Background.create(8, 8, 32); + m_Background.fill(colorA().rgb()); + } + + int retval = Done; + + int w = m_Size.width(); // desktop width/height + int h = m_Size.height(); + + int ww = m_Wallpaper.width(); // wallpaper width/height + int wh = m_Wallpaper.height(); + + m_WallpaperRect = QRect(); // to be filled destination rectangle; may exceed desktop! + + switch (wpmode) + { + case NoWallpaper: + break; + case Centred: + m_WallpaperRect.setRect((w - ww) / 2, (h - wh) / 2, ww, wh); + break; + case Tiled: + m_WallpaperRect.setRect(0, 0, w, h); + break; + case CenterTiled: + m_WallpaperRect.setCoords(-ww + ((w - ww) / 2) % ww, -wh + ((h - wh) / 2) % wh, w-1, h-1); + break; + case Scaled: + ww = w; + wh = h; + if( m_WallpaperRect.size() != QSize( w, h )) + m_Wallpaper = m_Wallpaper.smoothScale( w, h ); + m_WallpaperRect.setRect(0, 0, w, h); + break; + case CentredAutoFit: + if( ww <= w && wh <= h ) { + m_WallpaperRect.setRect((w - ww) / 2, (h - wh) / 2, ww, wh); // like Centred + break; + } + // fall through + case CentredMaxpect: + { + double sx = (double) w / ww; + double sy = (double) h / wh; + if (sx > sy) { + ww = (int)(sy * ww); + wh = h; + } else { + wh = (int)(sx * wh); + ww = w; + } + if( m_WallpaperRect.size() != QSize( ww, wh )) + m_Wallpaper = m_Wallpaper.smoothScale(ww, wh); + m_WallpaperRect.setRect((w - ww) / 2, (h - wh) / 2, ww, wh); + break; + } + case TiledMaxpect: + { + double sx = (double) w / ww; + double sy = (double) h / wh; + if (sx > sy) { + ww = (int)(sy * ww); + wh = h; + } else { + wh = (int)(sx * wh); + ww = w; + } + if( m_WallpaperRect.size() != QSize( ww, wh )) + m_Wallpaper = m_Wallpaper.smoothScale(ww, wh); + m_WallpaperRect.setRect(0, 0, w, h); + break; + } + case ScaleAndCrop: + { + double sx = (double) w / ww; + double sy = (double) h / wh; + if (sx > sy) { + //Case 1: x needs bigger scaling. Lets increase x and leave part of y offscreen + ww = w; + wh=(int)(sx * wh); + } else { + //Case 2: y needs bigger scaling. Lets increase y and leave part of x offscreen + wh = h; + ww = (int)(sy*ww); + } + if( m_WallpaperRect.size() != QSize( ww, wh )) + m_Wallpaper = m_Wallpaper.smoothScale(ww, wh); + m_WallpaperRect.setRect((w - ww) / 2, (h - wh) / 2,w, h); + break; + } + } + + wallpaperBlend(); + + if (retval == Done) + m_State |= WallpaperDone; + + return retval; +} + +bool KBackgroundRenderer::canTile() const +{ + return m_TilingEnabled && optimize(); +} + +extern bool qt_use_xrender; // in Qt ( qapplication_x11.cpp ) + +void KBackgroundRenderer::wallpaperBlend() +{ + if( !enabled() || wallpaperMode() == NoWallpaper + || (blendMode() == NoBlending && ( qt_use_xrender || !m_Wallpaper.hasAlphaBuffer()))) { + fastWallpaperBlend(); + } + else { + fullWallpaperBlend(); + } +} + +// works only for NoBlending and no alpha in wallpaper +// but is much faster than QImage fidling +void KBackgroundRenderer::fastWallpaperBlend() +{ + m_Image = QImage(); + // copy background to m_pPixmap + if( !enabled() || (wallpaperMode() == NoWallpaper && canTile())) { + // if there's no wallpaper, no need to tile the pixmap to the size of desktop, as X does + // that automatically and using a smaller pixmap should save some memory + m_Pixmap.convertFromImage( m_Background ); + return; + } + else if( wallpaperMode() == Tiled && !m_Wallpaper.hasAlphaBuffer() && canTile() && !m_bPreview ) { + // tiles will be tiled by X automatically + if( useShm()) { + KPixmapIO io; + m_Pixmap = io.convertToPixmap( m_Wallpaper ); + } + else + m_Pixmap.convertFromImage( m_Wallpaper ); + return; + } + else if( m_WallpaperRect.contains( QRect( QPoint( 0, 0 ), m_Size )) + && !m_Wallpaper.hasAlphaBuffer()) // wallpaper covers all and no blending + m_Pixmap = QPixmap( m_Size ); + else if (m_Background.size() == m_Size) + m_Pixmap.convertFromImage( m_Background ); + else { + m_Pixmap = QPixmap( m_Size ); + QPainter p( &m_Pixmap ); + QPixmap pm; + pm.convertFromImage( m_Background ); + p.drawTiledPixmap( 0, 0, m_Size.width(), m_Size.height(), pm ); + } + + // paint/alpha-blend wallpaper to destination rectangle of m_pPixmap + if (m_WallpaperRect.isValid()) { + QPixmap wp_pixmap; + if( useShm() && !m_Wallpaper.hasAlphaBuffer()) { + KPixmapIO io; + wp_pixmap = io.convertToPixmap( m_Wallpaper ); + } + else + wp_pixmap.convertFromImage( m_Wallpaper ); + int ww = m_Wallpaper.width(); + int wh = m_Wallpaper.height(); + for (int y = m_WallpaperRect.top(); y < m_WallpaperRect.bottom(); y += wh) { + for (int x = m_WallpaperRect.left(); x < m_WallpaperRect.right(); x += ww) { + bitBlt( &m_Pixmap, x, y, &wp_pixmap, 0, 0, ww, wh ); + } + } + } +} + + +void KBackgroundRenderer::fullWallpaperBlend() +{ + m_Pixmap = QPixmap(); + int w = m_Size.width(); // desktop width/height + int h = m_Size.height(); + // copy background to m_pImage + if (m_Background.size() == m_Size) { + m_Image = m_Background.copy(); + + if (m_Image.depth() < 32) + m_Image = m_Image.convertDepth(32, DiffuseAlphaDither); + + } else { + m_Image.create(w, h, 32); + tile(m_Image, QRect(0, 0, w, h), m_Background); + } + + // blend wallpaper to destination rectangle of m_pImage + if (m_WallpaperRect.isValid()) + { + int blendFactor = 100; + if (blendMode() == FlatBlending) + blendFactor = (blendBalance()+200)/4; + int ww = m_Wallpaper.width(); + int wh = m_Wallpaper.height(); + for (int y = m_WallpaperRect.top(); y < m_WallpaperRect.bottom(); y += wh) { + for (int x = m_WallpaperRect.left(); x < m_WallpaperRect.right(); x += ww) { + blend(m_Image, QRect(x, y, ww, wh), m_Wallpaper, + QPoint(-QMIN(x, 0), -QMIN(y, 0)), blendFactor); + } + } + } + + + // blend whole desktop + if ( wallpaperMode() != NoWallpaper) { + int bal = blendBalance(); + + switch( blendMode() ) { + case HorizontalBlending: + KImageEffect::blend( m_Image, m_Background, + KImageEffect::HorizontalGradient, + bal, 100 ); + break; + + case VerticalBlending: + KImageEffect::blend( m_Image, m_Background, + KImageEffect::VerticalGradient, + 100, bal ); + break; + + case PyramidBlending: + KImageEffect::blend( m_Image, m_Background, + KImageEffect::PyramidGradient, + bal, bal ); + break; + + case PipeCrossBlending: + KImageEffect::blend( m_Image, m_Background, + KImageEffect::PipeCrossGradient, + bal, bal ); + break; + + case EllipticBlending: + KImageEffect::blend( m_Image, m_Background, + KImageEffect::EllipticGradient, + bal, bal ); + break; + + case IntensityBlending: + KImageEffect::modulate( m_Image, m_Background, reverseBlending(), + KImageEffect::Intensity, bal, KImageEffect::All ); + break; + + case SaturateBlending: + KImageEffect::modulate( m_Image, m_Background, reverseBlending(), + KImageEffect::Saturation, bal, KImageEffect::Gray ); + break; + + case ContrastBlending: + KImageEffect::modulate( m_Image, m_Background, reverseBlending(), + KImageEffect::Contrast, bal, KImageEffect::All ); + break; + + case HueShiftBlending: + KImageEffect::modulate( m_Image, m_Background, reverseBlending(), + KImageEffect::HueShift, bal, KImageEffect::Gray ); + break; + + case FlatBlending: + // Already handled + break; + } + } +} + +/* Alpha blend an area from <src> with offset <soffs> to rectangle <dr> of <dst> + * Default offset is QPoint(0, 0). + * blendfactor = [0, 100%] + */ +void KBackgroundRenderer::blend(QImage& dst, QRect dr, const QImage& src, QPoint soffs, int blendFactor) +{ + int x, y, a; + dr &= dst.rect(); + + for (y = 0; y < dr.height(); y++) { + if (dst.scanLine(dr.y() + y) && src.scanLine(soffs.y() + y)) { + QRgb *b, *d; + for (x = 0; x < dr.width(); x++) { + b = reinterpret_cast<QRgb*>(dst.scanLine(dr.y() + y) + + (dr.x() + x) * sizeof(QRgb)); + d = reinterpret_cast<QRgb*>(src.scanLine(soffs.y() + y) + + (soffs.x() + x) * sizeof(QRgb)); + a = (qAlpha(*d) * blendFactor) / 100; + *b = qRgb(qRed(*b) - (((qRed(*b) - qRed(*d)) * a) >> 8), + qGreen(*b) - (((qGreen(*b) - qGreen(*d)) * a) >> 8), + qBlue(*b) - (((qBlue(*b) - qBlue(*d)) * a) >> 8)); + } + } + } +} + + + +void KBackgroundRenderer::slotBackgroundDone(KProcess *process) +{ + Q_ASSERT(process == m_pProc); + m_State |= BackgroundDone; + + if (m_pProc->normalExit() && !m_pProc->exitStatus()) { + m_Background.load(m_Tempfile->name()); + m_State |= BackgroundDone; + } + + m_Tempfile->unlink(); + delete m_Tempfile; m_Tempfile = 0; + m_pTimer->start(0, true); + setBusyCursor(false); +} + + + +/* + * Starts the rendering process. + */ +void KBackgroundRenderer::start(bool enableBusyCursor) +{ + m_enableBusyCursor = enableBusyCursor; + setBusyCursor(true); + + m_Cached = false; + + m_State = Rendering; + m_pTimer->start(0, true); +} + + +/* + * This slot is connected to a timer event. It is called repeatedly until + * the rendering is done. + */ +void KBackgroundRenderer::render() +{ + setBusyCursor(true); + if (!(m_State & Rendering)) + return; + + if( !(m_State & InitCheck)) { + QString f = cacheFileName(); + if( useCacheFile()) { + QString w = m_pDirs->findResource("wallpaper", currentWallpaper()); + QFileInfo wi( w ); + QFileInfo fi( f ); + if( wi.lastModified().isValid() && fi.lastModified().isValid() + && wi.lastModified() < fi.lastModified()) { + QImage im; + if( im.load( f, "PNG" )) { + m_Image = im; + m_Pixmap = QPixmap( m_Size ); + m_Pixmap.convertFromImage( m_Image ); + m_Cached = true; + m_State |= InitCheck | BackgroundDone | WallpaperDone; + } + } + } + m_pTimer->start(0, true); + m_State |= InitCheck; + return; + } + + int ret; + + if (!(m_State & BackgroundDone)) { + ret = doBackground(); + if (ret != Wait) + m_pTimer->start(0, true); + return; + } + + // No async wallpaper + doWallpaper(); + + done(); + setBusyCursor(false); +} + + +/* + * Rendering is finished. + */ +void KBackgroundRenderer::done() +{ + setBusyCursor(false); + m_State |= AllDone; + emit imageDone(desk(), screen()); + if(backgroundMode() == Program && m_pProc && + m_pProc->normalExit() && m_pProc->exitStatus()) { + emit programFailure(desk(), m_pProc->exitStatus()); + } else if(backgroundMode() == Program && m_pProc && + !m_pProc->normalExit()) { + emit programFailure(desk(), -1); + } else if(backgroundMode() == Program) { + emit programSuccess(desk()); + } + +} + +/* + * This function toggles a busy cursor on and off, for use in rendering. + * It is useful because of the ASYNC nature of the rendering - it is hard + * to make sure we don't set the busy cursor twice, but only restore + * once. + */ +void KBackgroundRenderer::setBusyCursor(bool isBusy) { + if(m_isBusyCursor == isBusy) + return; + if (isBusy && !m_enableBusyCursor) + return; + m_isBusyCursor = isBusy; + if(isBusy) + QApplication::setOverrideCursor( KCursor::workingCursor() ); + else + QApplication::restoreOverrideCursor(); +} + +/* + * Stop the rendering. + */ +void KBackgroundRenderer::stop() +{ + if (!(m_State & Rendering)) + return; + + doBackground(true); + doWallpaper(true); + m_State = 0; +} + + +/* + * Cleanup after rendering. + */ +void KBackgroundRenderer::cleanup() +{ + setBusyCursor(false); + m_Background = QImage(); + m_Image = QImage(); + m_Pixmap = QPixmap(); + m_Wallpaper = QImage(); + delete m_pProc; m_pProc = 0L; + m_State = 0; + m_WallpaperRect = QRect(); + m_Cached = false; +} + + +void KBackgroundRenderer::setPreview(const QSize &size) +{ + if (size.isNull()) + m_bPreview = false; + else { + m_bPreview = true; + m_Size = size; + } +} + + +QPixmap KBackgroundRenderer::pixmap() +{ + if (m_State & AllDone) { + if( m_Pixmap.isNull()) + m_Pixmap.convertFromImage( m_Image ); + return m_Pixmap; + } + return QPixmap(); +} + +QImage KBackgroundRenderer::image() +{ + if (m_State & AllDone) { + if( m_Image.isNull()) + fullWallpaperBlend(); // create from m_Pixmap + return m_Image; + } + return QImage(); +} + + +void KBackgroundRenderer::load(int desk, int screen, bool drawBackgroundPerScreen, bool reparseConfig) +{ + if (m_State & Rendering) + stop(); + + cleanup(); + m_bPreview = false; + m_Size = m_rSize; + + KBackgroundSettings::load(desk, screen, drawBackgroundPerScreen, reparseConfig); +} + +void KBackgroundRenderer::createTempFile() +{ + if( !m_Tempfile ) + m_Tempfile = new KTempFile(); +} + +QString KBackgroundRenderer::cacheFileName() +{ + QString f = fingerprint(); + f.replace ( ':', '_' ); // avoid characters that shouldn't be in filenames + f.replace ( '/', '#' ); + f = locateLocal( "cache", QString( "background/%1x%2_%3.png" ) + .arg( m_Size.width()).arg( m_Size.height()).arg( f )); + return f; +} + +bool KBackgroundRenderer::useCacheFile() const +{ + if( !enabled()) + return false; + if( backgroundMode() == Program ) + return false; // don't cache these at all + if( wallpaperMode() == NoWallpaper ) + return false; // generating only background patterns should be always faster + QString file = currentWallpaper(); + if( file.endsWith(".svg") || file.endsWith(".svgz")) + return true; // cache these, they can be bloody slow + switch( backgroundMode()) + { + case NoWallpaper: + case Centred: + case Tiled: + case CenterTiled: + return false; // these don't need scaling + case CentredMaxpect: + case TiledMaxpect: + case Scaled: + case CentredAutoFit: + case ScaleAndCrop: + default: + return true; + } +} + +void KBackgroundRenderer::saveCacheFile() +{ + if( !( m_State & AllDone )) + return; + if( !useCacheFile()) + return; + if( m_Image.isNull()) + fullWallpaperBlend(); // generate from m_Pixmap + QString f = cacheFileName(); + if( KStandardDirs::exists( f ) || m_Cached ) + utime( QFile::encodeName( f ), NULL ); + else { + m_Image.save( f, "PNG" ); + // remove old entries from the cache + QDir dir( locateLocal( "cache", "background/" )); + if( const QFileInfoList* list = dir.entryInfoList( "*.png", QDir::Files, QDir::Time | QDir::Reversed )) { + int size = 0; + for( QFileInfoListIterator it( *list ); + QFileInfo* info = it.current(); + ++it ) + size += info->size(); + for( QFileInfoListIterator it( *list ); + QFileInfo* info = it.current(); + ++it ) { + if( size < 8 * 1024 * 1024 ) + break; + // keep everything newer than 10 minutes if the total size is less than 50M (just in case) + if( size < 50 * 1024 * 1024 + && ( time_t ) info->lastModified().toTime_t() >= time( NULL ) - 10 * 60 ) + break; + size -= info->size(); + QFile::remove( info->absFilePath()); + } + } + } +} + +//BEGIN class KVirtualBGRenderer +KVirtualBGRenderer::KVirtualBGRenderer( int desk, KConfig *config ) +{ + m_pPixmap = 0l; + m_desk = desk; + m_numRenderers = 0; + m_scaleX = 1; + m_scaleY = 1; + + // The following code is borrowed from KBackgroundSettings::KBackgroundSettings + if (!config) { + int screen_number = 0; + if (qt_xdisplay()) + screen_number = DefaultScreen(qt_xdisplay()); + QCString configname; + if (screen_number == 0) + configname = "kdesktoprc"; + else + configname.sprintf("kdesktop-screen-%drc", screen_number); + + m_pConfig = new KConfig(configname, false, false); + m_bDeleteConfig = true; + } else { + m_pConfig = config; + m_bDeleteConfig = false; + } + + initRenderers(); + m_size = QApplication::desktop()->size(); +} + +KVirtualBGRenderer::~KVirtualBGRenderer() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + delete m_renderer[i]; + + delete m_pPixmap; + + if (m_bDeleteConfig) + delete m_pConfig; +} + + +KBackgroundRenderer * KVirtualBGRenderer::renderer(unsigned screen) +{ + return m_renderer[screen]; +} + + +QPixmap KVirtualBGRenderer::pixmap() +{ + if (m_numRenderers == 1) + return m_renderer[0]->pixmap(); + + return *m_pPixmap; +} + + +bool KVirtualBGRenderer::needProgramUpdate() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + { + if ( m_renderer[i]->backgroundMode() == KBackgroundSettings::Program && + m_renderer[i]->KBackgroundProgram::needUpdate() ) + return true; + } + return false; +} + + +void KVirtualBGRenderer::programUpdate() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + { + if ( m_renderer[i]->backgroundMode() == KBackgroundSettings::Program && + m_renderer[i]->KBackgroundProgram::needUpdate() ) + { + m_renderer[i]->KBackgroundProgram::update(); + } + } +} + + +bool KVirtualBGRenderer::needWallpaperChange() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + { + if ( m_renderer[i]->needWallpaperChange() ) + return true; + } + return false; +} + + +void KVirtualBGRenderer::changeWallpaper() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + { + m_renderer[i]->changeWallpaper(); + } +} + + +int KVirtualBGRenderer::hash() +{ + QString fp; + for (unsigned i=0; i<m_numRenderers; ++i) + { + fp += m_renderer[i]->fingerprint(); + } + //kdDebug() << k_funcinfo << " fp=\""<<fp<<"\" h="<<QHash(fp)<<endl; + return QHash(fp); +} + + +bool KVirtualBGRenderer::isActive() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + { + if ( m_renderer[i]->isActive() ) + return true; + } + return false; +} + + +void KVirtualBGRenderer::setEnabled(bool enable) +{ + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->setEnabled(enable); +} + + +void KVirtualBGRenderer::desktopResized() +{ + m_size = QApplication::desktop()->size(); + + if (m_pPixmap) + { + delete m_pPixmap; + m_pPixmap = new QPixmap(m_size); + m_pPixmap->fill(Qt::black); + } + + initRenderers(); +} + + +void KVirtualBGRenderer::setPreview(const QSize & size) +{ + if (m_size == size) + return; + + m_size = size; + + if (m_pPixmap) + m_pPixmap->resize(m_size); + + // Scaling factors + m_scaleX = float(m_size.width()) / float(QApplication::desktop()->size().width()); + m_scaleY = float(m_size.height()) / float(QApplication::desktop()->size().height()); + + // Scale renderers appropriately + for (unsigned i=0; i<m_renderer.size(); ++i) + { + QSize unscaledRendererSize = renderSize(i); + + m_renderer[i]->setPreview( QSize( + int(unscaledRendererSize.width() * m_scaleX), + int(unscaledRendererSize.height() * m_scaleY) ) ); + } +} + + +QSize KVirtualBGRenderer::renderSize(int screen) +{ + return m_bDrawBackgroundPerScreen ? + QApplication::desktop()->screenGeometry(screen).size() : QApplication::desktop()->size(); +} + + +void KVirtualBGRenderer::initRenderers() +{ + m_pConfig->setGroup("Background Common"); + m_bDrawBackgroundPerScreen = m_pConfig->readBoolEntry( QString("DrawBackgroundPerScreen_%1").arg(m_desk), _defDrawBackgroundPerScreen ); + + m_bCommonScreen = m_pConfig->readBoolEntry("CommonScreen", _defCommonScreen); + + m_numRenderers = m_bDrawBackgroundPerScreen ? QApplication::desktop()->numScreens() : 1; + + m_bFinished.resize(m_numRenderers); + m_bFinished.fill(false); + + if (m_numRenderers == m_renderer.size()) + return; + + for (unsigned i=0; i<m_renderer.size(); ++i) + delete m_renderer[i]; + + m_renderer.resize(m_numRenderers); + for (unsigned i=0; i<m_numRenderers; ++i) + { + int eScreen = m_bCommonScreen ? 0 : i; + KBackgroundRenderer * r = new KBackgroundRenderer( m_desk, eScreen, m_bDrawBackgroundPerScreen, m_pConfig ); + m_renderer.insert( i, r ); + r->setSize(renderSize(i)); + connect( r, SIGNAL(imageDone(int,int)), this, SLOT(screenDone(int,int)) ); + } +} + + +void KVirtualBGRenderer::load(int desk, bool reparseConfig) +{ + m_desk = desk; + + m_pConfig->setGroup("Background Common"); + m_bCommonScreen = m_pConfig->readBoolEntry("CommonScreen", _defCommonScreen); + + initRenderers(); + + for (unsigned i=0; i<m_numRenderers; ++i) + { + unsigned eScreen = m_bCommonScreen ? 0 : i; + m_renderer[i]->load(desk, eScreen, m_bDrawBackgroundPerScreen, reparseConfig); + } +} + + +void KVirtualBGRenderer::screenDone(int _desk, int _screen) +{ + Q_UNUSED(_desk); + Q_UNUSED(_screen); + + const KBackgroundRenderer * sender = dynamic_cast<const KBackgroundRenderer*>(this->sender()); + int screen = m_renderer.find(sender); + if (screen == -1) + //?? + return; + + m_bFinished[screen] = true; + + + if (m_pPixmap) + { + // There's more than one renderer, so we are drawing each output to our own pixmap + + QRect overallGeometry; + for (int i=0; i < QApplication::desktop()->numScreens(); ++i) + overallGeometry |= QApplication::desktop()->screenGeometry(i); + + QPoint drawPos = QApplication::desktop()->screenGeometry(screen).topLeft() - overallGeometry.topLeft(); + drawPos.setX( int(drawPos.x() * m_scaleX) ); + drawPos.setY( int(drawPos.y() * m_scaleY) ); + + QPixmap source = m_renderer[screen]->pixmap(); + QSize renderSize = this->renderSize(screen); + renderSize.setWidth( int(renderSize.width() * m_scaleX) ); + renderSize.setHeight( int(renderSize.height() * m_scaleY) ); + + QPainter p(m_pPixmap); + + if (renderSize == source.size()) + p.drawPixmap( drawPos, source ); + + else + p.drawTiledPixmap( drawPos.x(), drawPos.y(), renderSize.width(), renderSize.height(), source ); + + p.end(); + } + + for (unsigned i=0; i<m_bFinished.size(); ++i) + { + if (!m_bFinished[i]) + return; + } + + emit imageDone(m_desk); +} + + +void KVirtualBGRenderer::start() +{ + if (m_pPixmap) + { + delete m_pPixmap; + m_pPixmap = 0l; + } + + if (m_numRenderers > 1) + { + m_pPixmap = new QPixmap(m_size); + // If are screen sizes do not properly tile the overall virtual screen + // size, then we want the untiled parts to be black for use in desktop + // previews, etc + m_pPixmap->fill(Qt::black); + } + + m_bFinished.fill(false); + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->start(); +} + + +void KVirtualBGRenderer::stop() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->stop(); +} + + +void KVirtualBGRenderer::cleanup() +{ + m_bFinished.fill(false); + + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->cleanup(); + + delete m_pPixmap; + m_pPixmap = 0l; +} + +void KVirtualBGRenderer::saveCacheFile() +{ + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->saveCacheFile(); +} + +void KVirtualBGRenderer::enableTiling( bool enable ) +{ + for (unsigned i=0; i<m_numRenderers; ++i) + m_renderer[i]->enableTiling( enable ); +} + +//END class KVirtualBGRenderer + + +#include "bgrender.moc" |