1fb9f6f13a
The main advantage of SPDX license identifiers over the traditional license headers is that it's more difficult to overlook inappropriate licenses for kwin, for example GPL 3. We also don't have to copy a lot of boilerplate text. In order to create this change, I ran licensedigger -r -c from the toplevel source directory.
362 lines
13 KiB
C++
362 lines
13 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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SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*********************************************************************/
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#include "screenedgeeffect.h"
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// KWin
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#include <kwinglutils.h>
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#include <kwingltexture.h>
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#include <kwinxrenderutils.h>
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// KDE
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#include <Plasma/Svg>
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// Qt
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#include <QTimer>
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#include <QPainter>
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#include <QVector4D>
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// xcb
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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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namespace KWin {
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ScreenEdgeEffect::ScreenEdgeEffect()
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: Effect()
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, m_cleanupTimer(new QTimer(this))
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{
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connect(effects, &EffectsHandler::screenEdgeApproaching, this, &ScreenEdgeEffect::edgeApproaching);
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m_cleanupTimer->setInterval(5000);
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m_cleanupTimer->setSingleShot(true);
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connect(m_cleanupTimer, &QTimer::timeout, this, &ScreenEdgeEffect::cleanup);
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connect(effects, &EffectsHandler::screenLockingChanged, this,
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[this] (bool locked) {
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if (locked) {
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cleanup();
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}
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}
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);
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}
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ScreenEdgeEffect::~ScreenEdgeEffect()
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{
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cleanup();
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}
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void ScreenEdgeEffect::ensureGlowSvg()
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{
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if (!m_glow) {
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m_glow = new Plasma::Svg(this);
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m_glow->setImagePath(QStringLiteral("widgets/glowbar"));
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}
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}
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void ScreenEdgeEffect::cleanup()
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{
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for (QHash<ElectricBorder, Glow*>::iterator it = m_borders.begin();
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it != m_borders.end();
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++it) {
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effects->addRepaint((*it)->geometry);
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}
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qDeleteAll(m_borders);
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m_borders.clear();
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}
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void ScreenEdgeEffect::prePaintScreen(ScreenPrePaintData &data, int time)
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{
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effects->prePaintScreen(data, time);
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for (QHash<ElectricBorder, Glow*>::iterator it = m_borders.begin();
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it != m_borders.end();
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++it) {
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if ((*it)->strength == 0.0) {
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continue;
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}
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data.paint += (*it)->geometry;
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}
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}
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void ScreenEdgeEffect::paintScreen(int mask, const QRegion ®ion, ScreenPaintData &data)
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{
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effects->paintScreen(mask, region, data);
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for (QHash<ElectricBorder, Glow*>::iterator it = m_borders.begin();
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it != m_borders.end();
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++it) {
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const qreal opacity = (*it)->strength;
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if (opacity == 0.0) {
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continue;
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}
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if (effects->isOpenGLCompositing()) {
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GLTexture *texture = (*it)->texture.data();
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glEnable(GL_BLEND);
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glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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texture->bind();
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ShaderBinder binder(ShaderTrait::MapTexture | ShaderTrait::Modulate);
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const QVector4D constant(opacity, opacity, opacity, opacity);
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binder.shader()->setUniform(GLShader::ModulationConstant, constant);
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QMatrix4x4 mvp = data.projectionMatrix();
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mvp.translate((*it)->geometry.x(), (*it)->geometry.y());
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binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
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texture->render(infiniteRegion(), (*it)->geometry);
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texture->unbind();
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glDisable(GL_BLEND);
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} else if (effects->compositingType() == XRenderCompositing) {
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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const QRect &rect = (*it)->geometry;
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const QSize &size = (*it)->pictureSize;
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int x = rect.x();
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int y = rect.y();
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int width = rect.width();
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int height = rect.height();
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switch ((*it)->border) {
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case ElectricTopRight:
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x = rect.x() + rect.width() - size.width();
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break;
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case ElectricBottomRight:
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x = rect.x() + rect.width() - size.width();
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y = rect.y() + rect.height() - size.height();
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break;
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case ElectricBottomLeft:
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y = rect.y() + rect.height() - size.height();
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break;
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default:
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// nothing
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break;
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}
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xcb_render_composite(xcbConnection(), XCB_RENDER_PICT_OP_OVER, *(*it)->picture.data(),
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xRenderBlendPicture(opacity), effects->xrenderBufferPicture(),
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0, 0, 0, 0, x, y, width, height);
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#endif
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} else if (effects->compositingType() == QPainterCompositing) {
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QImage tmp((*it)->image->size(), QImage::Format_ARGB32_Premultiplied);
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tmp.fill(Qt::transparent);
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QPainter p(&tmp);
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p.drawImage(0, 0, *(*it)->image.data());
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QColor color(Qt::transparent);
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color.setAlphaF(opacity);
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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p.fillRect(QRect(QPoint(0, 0), tmp.size()), color);
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p.end();
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QPainter *painter = effects->scenePainter();
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const QRect &rect = (*it)->geometry;
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const QSize &size = (*it)->pictureSize;
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int x = rect.x();
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int y = rect.y();
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switch ((*it)->border) {
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case ElectricTopRight:
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x = rect.x() + rect.width() - size.width();
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break;
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case ElectricBottomRight:
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x = rect.x() + rect.width() - size.width();
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y = rect.y() + rect.height() - size.height();
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break;
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case ElectricBottomLeft:
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y = rect.y() + rect.height() - size.height();
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break;
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default:
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// nothing
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break;
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}
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painter->drawImage(QPoint(x, y), tmp);
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}
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}
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}
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void ScreenEdgeEffect::edgeApproaching(ElectricBorder border, qreal factor, const QRect &geometry)
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{
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QHash<ElectricBorder, Glow*>::iterator it = m_borders.find(border);
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if (it != m_borders.end()) {
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// need to update
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effects->addRepaint((*it)->geometry);
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(*it)->strength = factor;
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if ((*it)->geometry != geometry) {
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(*it)->geometry = geometry;
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effects->addRepaint((*it)->geometry);
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if (border == ElectricLeft || border == ElectricRight || border == ElectricTop || border == ElectricBottom) {
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if (effects->isOpenGLCompositing()) {
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(*it)->texture.reset(createEdgeGlow<GLTexture>(border, geometry.size()));
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} else if (effects->compositingType() == XRenderCompositing) {
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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(*it)->picture.reset(createEdgeGlow<XRenderPicture>(border, geometry.size()));
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#endif
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} else if (effects->compositingType() == QPainterCompositing) {
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(*it)->image.reset(createEdgeGlow<QImage>(border, geometry.size()));
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}
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}
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}
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if (factor == 0.0) {
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m_cleanupTimer->start();
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} else {
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m_cleanupTimer->stop();
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}
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} else if (factor != 0.0) {
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// need to generate new Glow
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Glow *glow = createGlow(border, factor, geometry);
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if (glow) {
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m_borders.insert(border, glow);
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effects->addRepaint(glow->geometry);
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}
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}
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}
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Glow *ScreenEdgeEffect::createGlow(ElectricBorder border, qreal factor, const QRect &geometry)
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{
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Glow *glow = new Glow();
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glow->border = border;
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glow->strength = factor;
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glow->geometry = geometry;
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// render the glow image
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if (effects->isOpenGLCompositing()) {
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effects->makeOpenGLContextCurrent();
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if (border == ElectricTopLeft || border == ElectricTopRight || border == ElectricBottomRight || border == ElectricBottomLeft) {
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glow->texture.reset(createCornerGlow<GLTexture>(border));
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} else {
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glow->texture.reset(createEdgeGlow<GLTexture>(border, geometry.size()));
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}
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if (!glow->texture.isNull()) {
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glow->texture->setWrapMode(GL_CLAMP_TO_EDGE);
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}
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if (glow->texture.isNull()) {
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delete glow;
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return nullptr;
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}
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} else if (effects->compositingType() == XRenderCompositing) {
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if (border == ElectricTopLeft || border == ElectricTopRight || border == ElectricBottomRight || border == ElectricBottomLeft) {
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glow->pictureSize = cornerGlowSize(border);
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glow->picture.reset(createCornerGlow<XRenderPicture>(border));
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} else {
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glow->pictureSize = geometry.size();
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glow->picture.reset(createEdgeGlow<XRenderPicture>(border, geometry.size()));
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}
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if (glow->picture.isNull()) {
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delete glow;
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return nullptr;
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}
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#endif
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} else if (effects->compositingType() == QPainterCompositing) {
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if (border == ElectricTopLeft || border == ElectricTopRight || border == ElectricBottomRight || border == ElectricBottomLeft) {
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glow->image.reset(createCornerGlow<QImage>(border));
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glow->pictureSize = cornerGlowSize(border);
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} else {
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glow->image.reset(createEdgeGlow<QImage>(border, geometry.size()));
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glow->pictureSize = geometry.size();
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}
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if (glow->image.isNull()) {
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delete glow;
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return nullptr;
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}
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}
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return glow;
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}
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template <typename T>
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T *ScreenEdgeEffect::createCornerGlow(ElectricBorder border)
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{
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ensureGlowSvg();
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switch (border) {
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case ElectricTopLeft:
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return new T(m_glow->pixmap(QStringLiteral("bottomright")).toImage());
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case ElectricTopRight:
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return new T(m_glow->pixmap(QStringLiteral("bottomleft")).toImage());
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case ElectricBottomRight:
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return new T(m_glow->pixmap(QStringLiteral("topleft")).toImage());
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case ElectricBottomLeft:
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return new T(m_glow->pixmap(QStringLiteral("topright")).toImage());
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default:
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return nullptr;
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}
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}
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QSize ScreenEdgeEffect::cornerGlowSize(ElectricBorder border)
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{
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ensureGlowSvg();
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switch (border) {
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case ElectricTopLeft:
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return m_glow->elementSize(QStringLiteral("bottomright"));
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case ElectricTopRight:
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return m_glow->elementSize(QStringLiteral("bottomleft"));
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case ElectricBottomRight:
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return m_glow->elementSize(QStringLiteral("topleft"));
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case ElectricBottomLeft:
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return m_glow->elementSize(QStringLiteral("topright"));
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default:
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return QSize();
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}
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}
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template <typename T>
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T *ScreenEdgeEffect::createEdgeGlow(ElectricBorder border, const QSize &size)
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{
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ensureGlowSvg();
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const bool stretchBorder = m_glow->hasElement(QStringLiteral("hint-stretch-borders"));
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QPoint pixmapPosition(0, 0);
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QPixmap l, r, c;
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switch (border) {
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case ElectricTop:
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l = m_glow->pixmap(QStringLiteral("bottomleft"));
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r = m_glow->pixmap(QStringLiteral("bottomright"));
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c = m_glow->pixmap(QStringLiteral("bottom"));
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break;
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case ElectricBottom:
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l = m_glow->pixmap(QStringLiteral("topleft"));
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r = m_glow->pixmap(QStringLiteral("topright"));
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c = m_glow->pixmap(QStringLiteral("top"));
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pixmapPosition = QPoint(0, size.height() - c.height());
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break;
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case ElectricLeft:
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l = m_glow->pixmap(QStringLiteral("topright"));
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r = m_glow->pixmap(QStringLiteral("bottomright"));
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c = m_glow->pixmap(QStringLiteral("right"));
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break;
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case ElectricRight:
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l = m_glow->pixmap(QStringLiteral("topleft"));
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r = m_glow->pixmap(QStringLiteral("bottomleft"));
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c = m_glow->pixmap(QStringLiteral("left"));
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pixmapPosition = QPoint(size.width() - c.width(), 0);
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break;
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default:
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return nullptr;
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}
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QPixmap image(size);
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image.fill(Qt::transparent);
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QPainter p;
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p.begin(&image);
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if (border == ElectricBottom || border == ElectricTop) {
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p.drawPixmap(pixmapPosition, l);
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const QRect cRect(l.width(), pixmapPosition.y(), size.width() - l.width() - r.width(), c.height());
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if (stretchBorder) {
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p.drawPixmap(cRect, c);
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} else {
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p.drawTiledPixmap(cRect, c);
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}
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p.drawPixmap(QPoint(size.width() - r.width(), pixmapPosition.y()), r);
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} else {
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p.drawPixmap(pixmapPosition, l);
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const QRect cRect(pixmapPosition.x(), l.height(), c.width(), size.height() - l.height() - r.height());
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if (stretchBorder) {
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p.drawPixmap(cRect, c);
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} else {
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p.drawTiledPixmap(cRect, c);
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}
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p.drawPixmap(QPoint(pixmapPosition.x(), size.height() - r.height()), r);
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}
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p.end();
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return new T(image.toImage());
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}
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bool ScreenEdgeEffect::isActive() const
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{
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return !m_borders.isEmpty() && !effects->isScreenLocked();
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}
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} // namespace
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