b5279af212
Effect uses framebuffer blit to copy the zoomed are in a scaled way into an offscreen texture and render the texture after the rendering. This means instead of two rendering passes we now need only one pass, but require the blit extension.
64 lines
2 KiB
C++
64 lines
2 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) 2011 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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#ifndef KWIN_MAGNIFIER_H
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#define KWIN_MAGNIFIER_H
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#include <kwineffects.h>
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namespace KWin
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{
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class GLRenderTarget;
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class GLTexture;
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class MagnifierEffect
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: public Effect
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{
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Q_OBJECT
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public:
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MagnifierEffect();
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virtual ~MagnifierEffect();
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virtual void reconfigure(ReconfigureFlags);
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virtual void prePaintScreen(ScreenPrePaintData& data, int time);
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virtual void paintScreen(int mask, QRegion region, ScreenPaintData& data);
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virtual void postPaintScreen();
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static bool supported();
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private slots:
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void zoomIn();
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void zoomOut();
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void toggle();
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void slotMouseChanged(const QPoint& pos, const QPoint& old,
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Qt::MouseButtons buttons, Qt::MouseButtons oldbuttons,
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Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers oldmodifiers);
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private:
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QRect magnifierArea(QPoint pos = cursorPos()) const;
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double zoom;
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double target_zoom;
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bool polling; // Mouse polling
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QSize magnifier_size;
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GLTexture *m_texture;
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GLRenderTarget *m_fbo;
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};
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} // namespace
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#endif
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