172 lines
4.5 KiB
C++
172 lines
4.5 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2008 Lubos Lunak <l.lunak@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_XRENDERUTILS_H
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#define KWIN_XRENDERUTILS_H
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#include <kwinconfig.h>
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <QtCore/QSharedData>
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#include <QtGui/QColor>
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#include <ksharedptr.h>
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#include <kwinglobals.h>
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#include <X11/extensions/Xfixes.h>
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#include <X11/extensions/Xrender.h>
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/** @addtogroup kwineffects */
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/** @{ */
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namespace KWin
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{
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/**
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* Convert QRegion to XserverRegion.
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*/
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KWIN_EXPORT XserverRegion toXserverRegion(QRegion region);
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/**
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* draws a round box on the renderscene
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*/
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KWIN_EXPORT void xRenderRoundBox(Picture pict, const QRect &rect, int round, const QColor &c);
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/**
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* dumps a QColor into a XRenderColor
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*/
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KWIN_EXPORT XRenderColor preMultiply(const QColor &c, float opacity = 1.0);
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/** @internal */
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class KWIN_EXPORT XRenderPictureData
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: public QSharedData
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{
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public:
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XRenderPictureData(Picture pic = None);
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~XRenderPictureData();
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Picture value();
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private:
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Picture picture;
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Q_DISABLE_COPY(XRenderPictureData)
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};
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/**
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* @short Wrapper around XRender Picture.
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*
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* This class wraps XRender's Picture, providing proper initialization,
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* convenience constructors and freeing of resources.
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* It should otherwise act exactly like the Picture type.
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*/
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class KWIN_EXPORT XRenderPicture
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{
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public:
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XRenderPicture(Picture pic = None);
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XRenderPicture(QPixmap pix);
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XRenderPicture(Pixmap pix, int depth);
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operator Picture();
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private:
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KSharedPtr< XRenderPictureData > d;
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};
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inline
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XRenderPictureData::XRenderPictureData(Picture pic)
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: picture(pic)
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{
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}
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inline
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XRenderPictureData::~XRenderPictureData()
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{
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if (picture != None)
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XRenderFreePicture(display(), picture);
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}
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inline
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Picture XRenderPictureData::value()
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{
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return picture;
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}
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inline
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XRenderPicture::XRenderPicture(Picture pic)
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: d(new XRenderPictureData(pic))
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{
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}
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inline
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XRenderPicture::operator Picture()
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{
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return d->value();
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}
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/**
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* Static 1x1 picture used to deliver a black pixel with given opacity (for blending performance)
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* Call and Use, the PixelPicture will stay, but may change it's opacity meanwhile. It's NOT threadsafe either
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*/
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KWIN_EXPORT XRenderPicture xRenderBlendPicture(double opacity);
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/**
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* Creates a 1x1 Picture filled with c
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*/
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KWIN_EXPORT XRenderPicture xRenderFill(const XRenderColor *c);
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KWIN_EXPORT XRenderPicture xRenderFill(const QColor &c);
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/**
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* Allows to render a window into a (transparent) pixmap
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* NOTICE: the result can be queried as xRenderWindowOffscreenTarget()
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* NOTICE: it may be 0
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* NOTICE: when done call setXRenderWindowOffscreen(false) to continue normal render process
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*/
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KWIN_EXPORT void setXRenderOffscreen(bool b);
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/**
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* Allows to define a persistent effect member as render target
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* The window (including shadows) is rendered into the top left corner
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* NOTICE: do NOT call setXRenderOffscreen(true) in addition!
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* NOTICE: do not forget to xRenderPopTarget once you're done to continue the normal render process
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*/
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KWIN_EXPORT void xRenderPushTarget(XRenderPicture *pic);
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KWIN_EXPORT void xRenderPopTarget();
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/**
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* Whether windows are currently rendered into an offscreen target buffer
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*/
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KWIN_EXPORT bool xRenderOffscreen();
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/**
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* The offscreen buffer as set by the renderer because of setXRenderWindowOffscreen(true)
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*/
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KWIN_EXPORT QPixmap *xRenderOffscreenTarget();
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/**
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* NOTICE: HANDS OFF!!!
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* scene_setXRenderWindowOffscreenTarget() is ONLY to be used by the renderer - DO NOT TOUCH!
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*/
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KWIN_EXPORT void scene_setXRenderOffscreenTarget(QPixmap *pix);
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/**
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* scene_xRenderWindowOffscreenTarget() is used by the scene to figure the target set by an effect
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*/
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KWIN_EXPORT XRenderPicture *scene_xRenderOffscreenTarget();
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} // namespace
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#endif
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/** @} */
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#endif
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