130 lines
3.9 KiB
C++
130 lines
3.9 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) 2007 Lubos Lunak <l.lunak@kde.org>
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Copyright (C) 2010 Martin Gräßlin <mgraesslin@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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#include "showpaint.h"
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#include <kwinconfig.h>
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#include <kwinglutils.h>
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <xcb/render.h>
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#endif
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#include <math.h>
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#include <qcolor.h>
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#include <QPainter>
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namespace KWin
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{
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static QColor colors[] = { Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta,
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Qt::yellow, Qt::gray
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};
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ShowPaintEffect::ShowPaintEffect()
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: color_index(0)
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{
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}
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ShowPaintEffect::~ShowPaintEffect()
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{
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}
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void ShowPaintEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
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{
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painted = QRegion();
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effects->paintScreen(mask, region, data);
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if (effects->isOpenGLCompositing())
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paintGL();
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if (effects->compositingType() == XRenderCompositing)
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paintXrender();
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#endif
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if (effects->compositingType() == QPainterCompositing) {
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paintQPainter();
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}
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if (++color_index == sizeof(colors) / sizeof(colors[ 0 ]))
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color_index = 0;
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}
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void ShowPaintEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
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{
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painted |= region;
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effects->paintWindow(w, mask, region, data);
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}
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void ShowPaintEffect::paintGL()
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{
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GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
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vbo->reset();
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vbo->setUseColor(true);
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ShaderBinder binder(ShaderManager::ColorShader);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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QColor color = colors[ color_index ];
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color.setAlphaF(0.2);
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vbo->setColor(color);
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QVector<float> verts;
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verts.reserve(painted.rects().count() * 12);
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foreach (const QRect & r, painted.rects()) {
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verts << r.x() + r.width() << r.y();
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verts << r.x() << r.y();
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verts << r.x() << r.y() + r.height();
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verts << r.x() << r.y() + r.height();
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verts << r.x() + r.width() << r.y() + r.height();
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verts << r.x() + r.width() << r.y();
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}
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vbo->setData(verts.count() / 2, 2, verts.data(), NULL);
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vbo->render(GL_TRIANGLES);
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glDisable(GL_BLEND);
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}
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void ShowPaintEffect::paintXrender()
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{
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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xcb_render_color_t col;
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float alpha = 0.2;
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const QColor& color = colors[ color_index ];
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col.alpha = int(alpha * 0xffff);
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col.red = int(alpha * 0xffff * color.red() / 255);
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col.green = int(alpha * 0xffff * color.green() / 255);
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col.blue = int(alpha * 0xffff * color.blue() / 255);
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QVector<xcb_rectangle_t> rects;
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foreach (const QRect & r, painted.rects()) {
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xcb_rectangle_t rect = {int16_t(r.x()), int16_t(r.y()), uint16_t(r.width()), uint16_t(r.height())};
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rects << rect;
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}
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xcb_render_fill_rectangles(xcbConnection(), XCB_RENDER_PICT_OP_OVER, effects->xrenderBufferPicture(), col, rects.count(), rects.constData());
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#endif
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}
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void ShowPaintEffect::paintQPainter()
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{
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QColor color = colors[ color_index ];
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color.setAlphaF(0.2);
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foreach (const QRect & r, painted.rects()) {
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effects->scenePainter()->fillRect(r, color);
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}
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}
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} // namespace
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