Added old abandoned KDE3 version of gwenview

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/gwenview@1088034 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 190 insertions, 0 deletions

diff --git a/src/gvcore/imageview.h b/src/gvcore/imageview.h
new file mode 100644
index 0000000..74e3c66
--- /dev/null
+++ b/src/gvcore/imageview.h
@@ -0,0 +1,190 @@
+// vim: set tabstop=4 shiftwidth=4 noexpandtab
+/*
+Gwenview - A simple image viewer for KDE
+Copyright 2000-2004 Aurélien Gâteau
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+
+#ifndef IMAGEVIEW_H
+#define IMAGEVIEW_H
+
+// Qt
+#include <qmap.h>
+#include <qscrollview.h>
+#include <qtimer.h>
+#include <qvaluelist.h>
+
+// Local
+#include "busylevelmanager.h"
+#include "imageutils/imageutils.h"
+#include "libgwenview_export.h"
+class QEvent;
+class QLabel;
+class QMouseEvent;
+class QPainter;
+class QTimer;
+class QWheelEvent;
+class KAction;
+class KActionCollection;
+class KToggleAction;
+typedef QValueList<KAction *> KActionPtrList;
+
+namespace Gwenview {
+class Document;
+
+class LIBGWENVIEW_EXPORT ImageView : public QScrollView {
+Q_OBJECT
+
+public:
+	class ToolBase;
+	class ZoomTool;
+	class ScrollTool;
+	class EventFilter;
+#if __GNUC__ < 3
+	friend class ToolBase;
+	friend class ZoomTool;
+	friend class ScrollTool;
+#endif
+	friend class EventFilter;
+
+	enum ToolID { SCROLL, ZOOM };
+	enum ZoomMode { ZOOM_FIT, ZOOM_FIT_WIDTH, ZOOM_FIT_HEIGHT, ZOOM_FREE };
+	typedef QMap<ToolID,ToolBase*> Tools;
+
+	ImageView(QWidget* parent,Document*,KActionCollection*);
+	~ImageView();
+
+	// Properties
+	double zoom() const; 
+	void setZoom(double zoom, int centerX=-1, int centerY=-1);
+	bool fullScreen() const; 
+	void setFullScreen(bool);
+
+	int brightness() const;
+	int contrast() const;
+	int gamma() const;
+
+public slots:
+	void setBrightness(int);
+	void setContrast(int);
+	void setGamma(int);
+	void updateFromSettings();
+
+signals:
+	void selectPrevious();
+	void selectNext();
+    void doubleClicked();
+	void requestContextMenu(const QPoint&);
+
+    // Emitted whenever an hint should be displayed
+    void requestHintDisplay(const QString& hint);
+
+	// Emitted whenever brightness, contrast or gamma changes
+	void bcgChanged();
+
+protected:
+	virtual void contentsDragEnterEvent(QDragEnterEvent*);
+	virtual void contentsDropEvent(QDropEvent*);
+	virtual void keyPressEvent(QKeyEvent*);
+	
+private:
+	struct Private;
+	Private* d;
+
+	struct PendingPaint {
+		PendingPaint( bool s, const QRect& r ) : rect( r ), smooth( s ) {};
+		PendingPaint() {}; // stupid Qt containers
+		QRect rect;
+		bool smooth;
+	};
+	enum Operation { CHECK_OPERATIONS = 0, SMOOTH_PASS = 1 << 0 };
+
+	void addPendingPaint( bool smooth, QRect rect = QRect());
+	void addPendingPaintInternal( bool smooth, QRect rect = QRect());
+	void performPaint( QPainter* painter, int clipx, int clipy, int clipw, int cliph, bool smooth );
+	void limitPaintSize( PendingPaint& paint );
+	void fullRepaint();
+	void cancelPending();
+	void scheduleOperation( Operation operation );
+	void checkPendingOperationsInternal();
+	void updateBusyLevels();
+
+	void updateZoom(ZoomMode, double value=0, int centerX=-1, int centerY=-1);
+	double computeZoom(bool in) const;
+	double computeZoomToFit() const;
+	double computeZoomToWidth() const;
+	double computeZoomToHeight() const;
+	
+	void updateImageOffset();
+	void updateScrollBarMode();
+	void updateContentSize();
+	void updateFullScreenLabel();
+	void updateZoomActions();
+	void selectTool(ButtonState, bool force);
+	void restartAutoHideTimer();
+
+	void emitRequestHintDisplay();
+
+	// Used by the scroll tool
+	void emitSelectPrevious() { emit selectPrevious(); }
+	void emitSelectNext() { emit selectNext(); }
+
+	// Used by the zoom tool
+	QPoint offset() const;
+	bool canZoom(bool in) const;
+	KToggleAction* zoomToFit() const;
+
+private slots:
+	void slotLoaded();
+	void slotModified();
+	void slotZoomIn();
+	void slotZoomOut();
+	void slotResetZoom();
+	void slotSelectZoom();
+	void setZoomToFit(bool);
+	void setZoomToWidth(bool);
+	void setZoomToHeight(bool);
+	void setLockZoom(bool);
+	void increaseGamma();
+	void decreaseGamma();
+	void increaseBrightness();
+	void decreaseBrightness();
+	void increaseContrast();
+	void decreaseContrast();
+	void slotImageSizeUpdated();
+	void slotImageRectUpdated(const QRect&);
+	void checkPendingOperations();
+	void loadingStarted();
+	void slotBusyLevelChanged(BusyLevel);
+	void showBCGDialog();
+	
+protected:
+	// Overloaded methods
+	bool eventFilter(QObject*, QEvent*);
+	void viewportMousePressEvent(QMouseEvent*);
+	void viewportMouseMoveEvent(QMouseEvent*);
+	void viewportMouseReleaseEvent(QMouseEvent*);
+	bool viewportKeyEvent(QKeyEvent*); // This one is not inherited, it's called from the eventFilter
+	void wheelEvent(QWheelEvent* event);
+	void resizeEvent(QResizeEvent* event);
+	void drawContents(QPainter* p,int clipx,int clipy,int clipw,int cliph);
+};
+
+} // namespace
+#endif
+