2007-11-27 22:40:25 +03:00
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/********************************************************************
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2007-07-13 17:22:09 +04:00
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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 Rivo Laks <rivolaks@hot.ee>
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2007-11-13 19:20:52 +03:00
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Copyright (C) 2007 Christian Nitschkowski <christian.nitschkowski@kdemail.net>
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2007-07-13 17:22:09 +04:00
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2007-11-27 22:40:25 +03:00
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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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2007-07-13 17:22:09 +04:00
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2007-11-27 22:40:25 +03:00
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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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2007-07-13 17:22:09 +04:00
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#include "lookingglass.h"
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2012-09-14 12:47:50 +04:00
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// KConfigSkeleton
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#include "lookingglassconfig.h"
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2007-07-13 17:22:09 +04:00
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#include <kwinglutils.h>
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2011-02-19 13:08:43 +03:00
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#include <kwinglplatform.h>
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2007-07-13 17:22:09 +04:00
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#include <kactioncollection.h>
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#include <kaction.h>
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2013-03-07 15:55:39 +04:00
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#include <KDE/KLocalizedString>
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2007-07-13 17:22:09 +04:00
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#include <kdebug.h>
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2011-01-06 19:18:27 +03:00
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#include <KDE/KGlobal>
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#include <KDE/KStandardDirs>
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#include <QVector2D>
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2007-07-13 17:22:09 +04:00
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2007-11-13 19:20:52 +03:00
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#include <kmessagebox.h>
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2007-07-13 17:22:09 +04:00
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namespace KWin
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{
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2011-01-30 17:34:42 +03:00
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KWIN_EFFECT(lookingglass, LookingGlassEffect)
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KWIN_EFFECT_SUPPORTED(lookingglass, LookingGlassEffect::supported())
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2007-07-13 17:22:09 +04:00
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2011-01-06 19:18:27 +03:00
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LookingGlassEffect::LookingGlassEffect()
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2011-02-25 22:25:21 +03:00
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: zoom(1.0f)
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2011-01-30 17:34:42 +03:00
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, target_zoom(1.0f)
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, polling(false)
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, m_texture(NULL)
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, m_fbo(NULL)
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, m_vbo(NULL)
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, m_shader(NULL)
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, m_enabled(false)
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, m_valid(false)
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{
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actionCollection = new KActionCollection(this);
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2007-11-13 19:20:52 +03:00
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actionCollection->setConfigGlobal(true);
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2013-07-23 09:02:52 +04:00
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actionCollection->setConfigGroup(QStringLiteral("LookingGlass"));
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2007-11-13 19:20:52 +03:00
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2007-07-13 17:22:09 +04:00
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KAction* a;
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2011-01-30 17:34:42 +03:00
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a = static_cast< KAction* >(actionCollection->addAction(KStandardAction::ZoomIn, this, SLOT(zoomIn())));
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2007-07-13 17:22:09 +04:00
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Plus));
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2011-01-30 17:34:42 +03:00
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a = static_cast< KAction* >(actionCollection->addAction(KStandardAction::ZoomOut, this, SLOT(zoomOut())));
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2007-07-13 17:22:09 +04:00
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Minus));
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2011-01-30 17:34:42 +03:00
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a = static_cast< KAction* >(actionCollection->addAction(KStandardAction::ActualSize, this, SLOT(toggle())));
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2007-07-13 17:22:09 +04:00
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_0));
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2011-03-12 16:37:30 +03:00
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connect(effects, SIGNAL(mouseChanged(QPoint,QPoint,Qt::MouseButtons,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::KeyboardModifiers)),
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this, SLOT(slotMouseChanged(QPoint,QPoint,Qt::MouseButtons,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::KeyboardModifiers)));
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2011-01-30 17:34:42 +03:00
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reconfigure(ReconfigureAll);
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}
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2007-11-13 19:20:52 +03:00
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LookingGlassEffect::~LookingGlassEffect()
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2011-01-30 17:34:42 +03:00
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{
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2011-01-06 19:18:27 +03:00
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delete m_texture;
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delete m_fbo;
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delete m_shader;
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delete m_vbo;
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2011-01-30 17:34:42 +03:00
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}
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2007-07-13 17:22:09 +04:00
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2011-01-06 19:18:27 +03:00
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bool LookingGlassEffect::supported()
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{
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2012-09-20 13:33:32 +04:00
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return effects->compositingType() == OpenGL2Compositing;
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2011-01-06 19:18:27 +03:00
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}
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2011-01-30 17:34:42 +03:00
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void LookingGlassEffect::reconfigure(ReconfigureFlags)
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{
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2012-09-14 12:47:50 +04:00
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LookingGlassConfig::self()->readConfig();
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initialradius = LookingGlassConfig::radius();
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2008-10-02 13:27:32 +04:00
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radius = initialradius;
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2013-07-23 09:02:52 +04:00
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kDebug(1212) << QStringLiteral("Radius from config: %1").arg(radius) << endl;
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2008-10-02 13:27:32 +04:00
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actionCollection->readSettings();
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2011-01-06 19:18:27 +03:00
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m_valid = loadData();
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2011-01-30 17:34:42 +03:00
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}
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2011-01-06 19:18:27 +03:00
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bool LookingGlassEffect::loadData()
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{
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// If NPOT textures are not supported, use nearest power-of-two sized
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// texture. It wastes memory, but it's possible to support systems without
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// NPOT textures that way
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int texw = displayWidth();
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int texh = displayHeight();
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if (!GLTexture::NPOTTextureSupported()) {
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2011-01-30 17:34:42 +03:00
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kWarning(1212) << "NPOT textures not supported, wasting some memory" ;
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2011-01-06 19:18:27 +03:00
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texw = nearestPowerOfTwo(texw);
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texh = nearestPowerOfTwo(texh);
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2008-10-02 13:27:32 +04:00
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}
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2011-01-06 19:18:27 +03:00
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// Create texture and render target
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m_texture = new GLTexture(texw, texh);
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m_texture->setFilter(GL_LINEAR_MIPMAP_LINEAR);
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m_texture->setWrapMode(GL_CLAMP_TO_EDGE);
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2011-07-17 19:57:30 +04:00
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m_fbo = new GLRenderTarget(*m_texture);
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2011-01-06 19:18:27 +03:00
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if (!m_fbo->valid()) {
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return false;
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}
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2013-07-23 09:02:52 +04:00
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QString shadersDir = QStringLiteral("kwin/shaders/1.10/");
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2013-05-23 11:55:16 +04:00
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#ifdef KWIN_HAVE_OPENGLES
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const qint64 coreVersionNumber = kVersionNumber(3, 0);
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#else
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const qint64 coreVersionNumber = kVersionNumber(1, 40);
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2013-05-21 12:56:10 +04:00
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#endif
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2013-05-23 11:55:16 +04:00
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if (GLPlatform::instance()->glslVersion() >= coreVersionNumber)
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2013-07-23 09:02:52 +04:00
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shadersDir = QStringLiteral("kwin/shaders/1.40/");
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const QString fragmentshader = KGlobal::dirs()->findResource("data", shadersDir + QStringLiteral("lookingglass.frag"));
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2011-01-06 19:18:27 +03:00
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m_shader = ShaderManager::instance()->loadFragmentShader(ShaderManager::SimpleShader, fragmentshader);
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if (m_shader->isValid()) {
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2012-09-21 13:25:08 +04:00
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ShaderBinder binder(m_shader);
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2011-01-06 19:18:27 +03:00
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m_shader->setUniform("u_textureSize", QVector2D(displayWidth(), displayHeight()));
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} else {
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kError(1212) << "The shader failed to load!" << endl;
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return false;
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}
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m_vbo = new GLVertexBuffer(GLVertexBuffer::Static);
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QVector<float> verts;
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QVector<float> texcoords;
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texcoords << displayWidth() << 0.0;
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verts << displayWidth() << 0.0;
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texcoords << 0.0 << 0.0;
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verts << 0.0 << 0.0;
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texcoords << 0.0 << displayHeight();
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verts << 0.0 << displayHeight();
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texcoords << 0.0 << displayHeight();
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verts << 0.0 << displayHeight();
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texcoords << displayWidth() << displayHeight();
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verts << displayWidth() << displayHeight();
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texcoords << displayWidth() << 0.0;
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verts << displayWidth() << 0.0;
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m_vbo->setData(6, 2, verts.constData(), texcoords.constData());
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return true;
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}
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2008-10-02 13:27:32 +04:00
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2007-07-13 17:22:09 +04:00
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void LookingGlassEffect::toggle()
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2011-01-30 17:34:42 +03:00
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{
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if (target_zoom == 1.0f) {
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2007-07-13 17:22:09 +04:00
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target_zoom = 2.0f;
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2011-01-30 17:34:42 +03:00
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if (!polling) {
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2009-04-28 00:20:05 +04:00
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polling = true;
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effects->startMousePolling();
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}
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2011-01-30 17:34:42 +03:00
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m_enabled = true;
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} else {
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2007-07-13 17:22:09 +04:00
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target_zoom = 1.0f;
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2011-01-30 17:34:42 +03:00
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if (polling) {
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2009-04-28 00:20:05 +04:00
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polling = false;
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effects->stopMousePolling();
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}
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2011-09-07 11:40:57 +04:00
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if (zoom == target_zoom) {
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m_enabled = false;
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}
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2007-07-13 17:22:09 +04:00
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}
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2011-09-07 11:40:57 +04:00
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effects->addRepaint(cursorPos().x() - radius, cursorPos().y() - radius, 2 * radius, 2 * radius);
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2011-01-30 17:34:42 +03:00
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}
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2007-07-13 17:22:09 +04:00
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void LookingGlassEffect::zoomIn()
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2011-01-30 17:34:42 +03:00
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{
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2007-09-03 19:00:43 +04:00
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target_zoom = qMin(7.0, target_zoom + 0.5);
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2011-01-06 19:18:27 +03:00
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m_enabled = true;
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2011-01-30 17:34:42 +03:00
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if (!polling) {
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2009-02-01 18:16:52 +03:00
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polling = true;
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effects->startMousePolling();
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2007-07-13 17:22:09 +04:00
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}
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2011-01-30 17:34:42 +03:00
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effects->addRepaint(cursorPos().x() - radius, cursorPos().y() - radius, 2 * radius, 2 * radius);
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}
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2007-07-13 17:22:09 +04:00
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void LookingGlassEffect::zoomOut()
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2011-01-30 17:34:42 +03:00
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{
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2007-07-13 17:22:09 +04:00
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target_zoom -= 0.5;
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2011-01-30 17:34:42 +03:00
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if (target_zoom < 1) {
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2007-07-13 17:22:09 +04:00
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target_zoom = 1;
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2011-01-30 17:34:42 +03:00
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if (polling) {
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2009-04-28 00:20:05 +04:00
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polling = false;
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effects->stopMousePolling();
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2009-02-01 18:16:52 +03:00
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}
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2011-09-07 11:40:57 +04:00
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if (zoom == target_zoom) {
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m_enabled = false;
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}
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2007-07-13 17:22:09 +04:00
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}
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2011-01-30 17:34:42 +03:00
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effects->addRepaint(cursorPos().x() - radius, cursorPos().y() - radius, 2 * radius, 2 * radius);
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}
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2007-07-13 17:22:09 +04:00
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2011-01-30 17:34:42 +03:00
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void LookingGlassEffect::prePaintScreen(ScreenPrePaintData& data, int time)
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{
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if (zoom != target_zoom) {
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double diff = time / animationTime(500.0);
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if (target_zoom > zoom)
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zoom = qMin(zoom * qMax(1.0 + diff, 1.2), target_zoom);
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2007-07-13 17:22:09 +04:00
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else
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2011-01-30 17:34:42 +03:00
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zoom = qMax(zoom * qMin(1.0 - diff, 0.8), target_zoom);
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2008-11-17 18:04:52 +03:00
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kDebug(1212) << "zoom is now " << zoom;
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2011-01-30 17:34:42 +03:00
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radius = qBound((double)initialradius, initialradius * zoom, 3.5 * initialradius);
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2007-07-13 17:22:09 +04:00
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2011-01-30 17:34:42 +03:00
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if (zoom <= 1.0f) {
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2011-01-06 19:18:27 +03:00
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m_enabled = false;
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}
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2007-07-13 17:22:09 +04:00
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2011-01-30 17:34:42 +03:00
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effects->addRepaint(cursorPos().x() - radius, cursorPos().y() - radius, 2 * radius, 2 * radius);
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}
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2011-01-06 19:18:27 +03:00
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if (m_valid && m_enabled) {
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data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
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// Start rendering to texture
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2011-03-13 16:34:30 +03:00
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GLRenderTarget::pushRenderTarget(m_fbo);
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2011-01-06 19:18:27 +03:00
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}
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2007-07-13 17:22:09 +04:00
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2011-01-30 17:34:42 +03:00
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effects->prePaintScreen(data, time);
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}
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2007-07-13 17:22:09 +04:00
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2011-03-12 16:37:30 +03:00
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void LookingGlassEffect::slotMouseChanged(const QPoint& pos, const QPoint& old, Qt::MouseButtons,
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2011-01-30 17:34:42 +03:00
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Qt::MouseButtons, Qt::KeyboardModifiers, Qt::KeyboardModifiers)
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{
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if (pos != old && m_enabled) {
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effects->addRepaint(pos.x() - radius, pos.y() - radius, 2 * radius, 2 * radius);
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effects->addRepaint(old.x() - radius, old.y() - radius, 2 * radius, 2 * radius);
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2007-07-13 17:22:09 +04:00
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}
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2011-01-30 17:34:42 +03:00
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}
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2007-07-13 17:22:09 +04:00
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2011-01-06 19:18:27 +03:00
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void LookingGlassEffect::postPaintScreen()
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{
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// Call the next effect.
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effects->postPaintScreen();
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if (m_valid && m_enabled) {
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// Disable render texture
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2011-03-13 16:34:30 +03:00
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GLRenderTarget* target = GLRenderTarget::popRenderTarget();
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2011-01-30 17:34:42 +03:00
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assert(target == m_fbo);
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Q_UNUSED(target);
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2011-01-06 19:18:27 +03:00
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m_texture->bind();
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// Use the shader
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2012-09-21 13:25:08 +04:00
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ShaderBinder binder(m_shader);
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2011-01-06 19:18:27 +03:00
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m_shader->setUniform("u_zoom", (float)zoom);
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m_shader->setUniform("u_radius", (float)radius);
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m_shader->setUniform("u_cursor", QVector2D(cursorPos().x(), cursorPos().y()));
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m_vbo->render(GL_TRIANGLES);
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m_texture->unbind();
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}
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}
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2011-08-27 13:21:31 +04:00
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bool LookingGlassEffect::isActive() const
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{
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return m_valid && m_enabled;
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}
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2007-07-13 17:22:09 +04:00
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} // namespace
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#include "lookingglass.moc"
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