File indexing completed on 2024-11-10 04:57:13 

0001 /*
0002     KWin - the KDE window manager
0003     This file is part of the KDE project.
0004 
0005     SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
0006     SPDX-FileCopyrightText: 2010 Sebastian Sauer <sebsauer@kdab.com>
0007 
0008     SPDX-License-Identifier: GPL-2.0-or-later
0009 */
0010 
0011 #pragma once
0012 
0013 #include <config-kwin.h>
0014 
0015 #include "effect/effect.h"
0016 #include <QTime>
0017 #include <QTimeLine>
0018 
0019 namespace KWin
0020 {
0021 
0022 #if HAVE_ACCESSIBILITY
0023 class ZoomAccessibilityIntegration;
0024 #endif
0025 
0026 class GLFramebuffer;
0027 class GLTexture;
0028 class GLVertexBuffer;
0029 
0030 class ZoomEffect
0031     : public Effect
0032 {
0033     Q_OBJECT
0034     Q_PROPERTY(qreal zoomFactor READ configuredZoomFactor)
0035     Q_PROPERTY(int mousePointer READ configuredMousePointer)
0036     Q_PROPERTY(int mouseTracking READ configuredMouseTracking)
0037     Q_PROPERTY(bool focusTrackingEnabled READ isFocusTrackingEnabled)
0038     Q_PROPERTY(bool textCaretTrackingEnabled READ isTextCaretTrackingEnabled)
0039     Q_PROPERTY(int focusDelay READ configuredFocusDelay)
0040     Q_PROPERTY(qreal moveFactor READ configuredMoveFactor)
0041     Q_PROPERTY(qreal targetZoom READ targetZoom)
0042 public:
0043     ZoomEffect();
0044     ~ZoomEffect() override;
0045     void reconfigure(ReconfigureFlags flags) override;
0046     void prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime) override;
0047     void paintScreen(const RenderTarget &renderTarget, const RenderViewport &viewport, int mask, const QRegion &region, Output *screen) override;
0048     void postPaintScreen() override;
0049     bool isActive() const override;
0050     int requestedEffectChainPosition() const override;
0051     // for properties
0052     qreal configuredZoomFactor() const;
0053     int configuredMousePointer() const;
0054     int configuredMouseTracking() const;
0055     bool isFocusTrackingEnabled() const;
0056     bool isTextCaretTrackingEnabled() const;
0057     int configuredFocusDelay() const;
0058     qreal configuredMoveFactor() const;
0059     qreal targetZoom() const;
0060 private Q_SLOTS:
0061     inline void zoomIn()
0062     {
0063         zoomIn(-1.0);
0064     };
0065     void zoomIn(double to);
0066     void zoomOut();
0067     void actualSize();
0068     void moveZoomLeft();
0069     void moveZoomRight();
0070     void moveZoomUp();
0071     void moveZoomDown();
0072     void moveMouseToFocus();
0073     void moveMouseToCenter();
0074     void timelineFrameChanged(int frame);
0075     void moveFocus(const QPoint &point);
0076     void slotMouseChanged(const QPointF &pos, const QPointF &old,
0077                           Qt::MouseButtons buttons, Qt::MouseButtons oldbuttons,
0078                           Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers oldmodifiers);
0079     void slotWindowAdded(EffectWindow *w);
0080     void slotWindowDamaged();
0081     void slotScreenRemoved(Output *screen);
0082 
0083 private:
0084     void showCursor();
0085     void hideCursor();
0086     void moveZoom(int x, int y);
0087 
0088 private:
0089     struct OffscreenData
0090     {
0091         std::unique_ptr<GLTexture> texture;
0092         std::unique_ptr<GLFramebuffer> framebuffer;
0093         QRect viewport;
0094     };
0095 
0096     GLTexture *ensureCursorTexture();
0097     OffscreenData *ensureOffscreenData(const RenderTarget &renderTarget, const RenderViewport &viewport, Output *screen);
0098     void markCursorTextureDirty();
0099 
0100 #if HAVE_ACCESSIBILITY
0101     ZoomAccessibilityIntegration *m_accessibilityIntegration = nullptr;
0102 #endif
0103     double zoom;
0104     double target_zoom;
0105     double source_zoom;
0106     bool polling; // Mouse polling
0107     double zoomFactor;
0108     enum MouseTrackingType {
0109         MouseTrackingProportional = 0,
0110         MouseTrackingCentred = 1,
0111         MouseTrackingPush = 2,
0112         MouseTrackingDisabled = 3,
0113     };
0114     MouseTrackingType mouseTracking;
0115     enum MousePointerType {
0116         MousePointerScale = 0,
0117         MousePointerKeep = 1,
0118         MousePointerHide = 2,
0119     };
0120     MousePointerType mousePointer;
0121     int focusDelay;
0122     QPoint cursorPoint;
0123     QPoint focusPoint;
0124     QPoint prevPoint;
0125     QTime lastMouseEvent;
0126     QTime lastFocusEvent;
0127     std::unique_ptr<GLTexture> m_cursorTexture;
0128     bool m_cursorTextureDirty = false;
0129     bool isMouseHidden;
0130     QTimeLine timeline;
0131     int xMove, yMove;
0132     double moveFactor;
0133     std::chrono::milliseconds lastPresentTime;
0134     std::map<Output *, OffscreenData> m_offscreenData;
0135 };
0136 
0137 } // namespace