237 lines
8.8 KiB
C++
237 lines
8.8 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) 2009 Lucas Murray <lmurray@undefinedfire.com>
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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 "snaphelper.h"
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#include <kwinglutils.h>
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <kwinxrenderutils.h>
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#include <xcb/render.h>
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#endif
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#include <QPainter>
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namespace KWin
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{
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SnapHelperEffect::SnapHelperEffect()
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: m_active(false)
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, m_window(NULL)
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{
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m_timeline.setCurveShape(QTimeLine::LinearCurve);
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reconfigure(ReconfigureAll);
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connect(effects, SIGNAL(windowClosed(KWin::EffectWindow*)), this, SLOT(slotWindowClosed(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowStartUserMovedResized(KWin::EffectWindow*)), this, SLOT(slotWindowStartUserMovedResized(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowFinishUserMovedResized(KWin::EffectWindow*)), this, SLOT(slotWindowFinishUserMovedResized(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowGeometryShapeChanged(KWin::EffectWindow*,QRect)), this, SLOT(slotWindowResized(KWin::EffectWindow*,QRect)));
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}
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SnapHelperEffect::~SnapHelperEffect()
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{
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}
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void SnapHelperEffect::reconfigure(ReconfigureFlags)
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{
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m_timeline.setDuration(animationTime(250));
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}
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void SnapHelperEffect::prePaintScreen(ScreenPrePaintData &data, int time)
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{
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double oldValue = m_timeline.currentValue();
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if (m_active)
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m_timeline.setCurrentTime(m_timeline.currentTime() + time);
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else
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m_timeline.setCurrentTime(m_timeline.currentTime() - time);
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if (oldValue != m_timeline.currentValue())
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effects->addRepaintFull();
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effects->prePaintScreen(data, time);
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}
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void SnapHelperEffect::postPaintScreen()
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{
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effects->postPaintScreen();
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if (m_timeline.currentValue() != 0.0) {
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// Display the guide
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if (effects->isOpenGLCompositing()) {
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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;
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color.setRedF(0.5);
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color.setGreenF(0.5);
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color.setBlueF(0.5);
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color.setAlphaF(m_timeline.currentValue() * 0.5);
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vbo->setColor(color);
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glLineWidth(4.0);
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QVector<float> verts;
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verts.reserve(effects->numScreens() * 24);
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for (int i = 0; i < effects->numScreens(); ++i) {
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const QRect& rect = effects->clientArea(ScreenArea, i, 0);
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int midX = rect.x() + rect.width() / 2;
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int midY = rect.y() + rect.height() / 2 ;
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int halfWidth = m_window->width() / 2;
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int halfHeight = m_window->height() / 2;
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// Center lines
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verts << rect.x() + rect.width() / 2 << rect.y();
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verts << rect.x() + rect.width() / 2 << rect.y() + rect.height();
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verts << rect.x() << rect.y() + rect.height() / 2;
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verts << rect.x() + rect.width() << rect.y() + rect.height() / 2;
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// Window outline
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// The +/- 2 is to prevent line overlap
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verts << midX - halfWidth + 2 << midY - halfHeight;
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verts << midX + halfWidth + 2 << midY - halfHeight;
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verts << midX + halfWidth << midY - halfHeight + 2;
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verts << midX + halfWidth << midY + halfHeight + 2;
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verts << midX + halfWidth - 2 << midY + halfHeight;
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verts << midX - halfWidth - 2 << midY + halfHeight;
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verts << midX - halfWidth << midY + halfHeight - 2;
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verts << midX - halfWidth << midY - halfHeight - 2;
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}
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vbo->setData(verts.count() / 2, 2, verts.data(), NULL);
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vbo->render(GL_LINES);
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glDisable(GL_BLEND);
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glLineWidth(1.0);
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}
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if ( effects->compositingType() == XRenderCompositing ) {
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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for (int i = 0; i < effects->numScreens(); ++i) {
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const QRect& rect = effects->clientArea( ScreenArea, i, 0 );
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int midX = rect.x() + rect.width() / 2;
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int midY = rect.y() + rect.height() / 2 ;
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int halfWidth = m_window->width() / 2;
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int halfHeight = m_window->height() / 2;
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xcb_rectangle_t rects[6];
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// Center lines
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rects[0].x = rect.x() + rect.width() / 2 - 2;
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rects[0].y = rect.y();
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rects[0].width = 4;
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rects[0].height = rect.height();
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rects[1].x = rect.x();
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rects[1].y = rect.y() + rect.height() / 2 - 2;
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rects[1].width = rect.width();
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rects[1].height = 4;
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// Window outline
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// The +/- 4 is to prevent line overlap
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rects[2].x = midX - halfWidth + 4;
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rects[2].y = midY - halfHeight;
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rects[2].width = 2*halfWidth - 4;
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rects[2].height = 4;
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rects[3].x = midX + halfWidth - 4;
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rects[3].y = midY - halfHeight + 4;
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rects[3].width = 4;
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rects[3].height = 2*halfHeight - 4;
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rects[4].x = midX - halfWidth;
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rects[4].y = midY + halfHeight - 4;
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rects[4].width = 2*halfWidth - 4;
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rects[4].height = 4;
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rects[5].x = midX - halfWidth;
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rects[5].y = midY - halfHeight;
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rects[5].width = 4;
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rects[5].height = 2*halfHeight - 4;
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xcb_render_fill_rectangles(xcbConnection(), XCB_RENDER_PICT_OP_OVER, effects->xrenderBufferPicture(),
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preMultiply(QColor(128, 128, 128, m_timeline.currentValue()*128)), 6, rects);
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}
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#endif
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}
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if (effects->compositingType() == QPainterCompositing) {
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QPainter *painter = effects->scenePainter();
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painter->save();
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QColor color;
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color.setRedF(0.5);
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color.setGreenF(0.5);
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color.setBlueF(0.5);
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color.setAlphaF(m_timeline.currentValue() * 0.5);
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QPen pen(color);
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pen.setWidth(4);
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painter->setPen(pen);
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painter->setBrush(Qt::NoBrush);
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for (int i = 0; i < effects->numScreens(); ++i) {
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const QRect &rect = effects->clientArea(ScreenArea, i, 0);
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// Center lines
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painter->drawLine(rect.center().x(), rect.y(), rect.center().x(), rect.y() + rect.height());
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painter->drawLine(rect.x(), rect.center().y(), rect.x() + rect.width(), rect.center().y());
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// window outline
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QRect windowRect(rect.center(), m_window->geometry().size());
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painter->drawRect(windowRect.translated(-windowRect.width()/2, -windowRect.height()/2));
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}
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painter->restore();
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}
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} else if (m_window && !m_active) {
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if (m_window->isDeleted())
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m_window->unrefWindow();
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m_window = NULL;
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}
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}
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void SnapHelperEffect::slotWindowClosed(EffectWindow* w)
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{
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if (m_window == w) {
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m_window->refWindow();
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m_active = false;
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}
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}
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void SnapHelperEffect::slotWindowStartUserMovedResized(EffectWindow *w)
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{
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if (w->isMovable()) {
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m_active = true;
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m_window = w;
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effects->addRepaintFull();
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}
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}
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void SnapHelperEffect::slotWindowFinishUserMovedResized(EffectWindow *w)
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{
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Q_UNUSED(w)
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if (m_active) {
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m_active = false;
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effects->addRepaintFull();
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}
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}
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void SnapHelperEffect::slotWindowResized(KWin::EffectWindow *w, const QRect &oldRect)
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{
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if (w == m_window) {
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QRect r(oldRect);
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for (int i = 0; i < effects->numScreens(); ++i) {
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r.moveCenter(effects->clientArea( ScreenArea, i, 0 ).center());
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effects->addRepaint(r);
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}
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}
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}
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bool SnapHelperEffect::isActive() const
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{
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return m_active || m_timeline.currentValue() != 0.0;
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}
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} // namespace
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