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158 lines
4.6 KiB
158 lines
4.6 KiB
/*
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* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
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*
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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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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_OPENGL_IMAGE_CONTEXT_H_
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#define KIS_OPENGL_IMAGE_CONTEXT_H_
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_GL
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#include <map>
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#include <tqgl.h>
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#include <tqobject.h>
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#include <tqvaluevector.h>
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#include <koffice_export.h>
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#include "kis_types.h"
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class TQRegion;
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class KisOpenGLImageContext;
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typedef KSharedPtr<KisOpenGLImageContext> KisOpenGLImageContextSP;
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class KisColorSpace;
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class KRITACORE_EXPORT KisOpenGLImageContext : public TQObject , public KShared {
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Q_OBJECT
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public:
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static KisOpenGLImageContextSP getImageContext(KisImageSP image, KisProfile *monitorProfile);
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KisOpenGLImageContext();
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virtual ~KisOpenGLImageContext();
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public:
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// In order to use the image textures, the caller must pass
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// the sharedContextWidget() as the shareWidget argument to the
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// TQGLWidget constructor.
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TQGLWidget *sharedContextWidget() const;
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void setMonitorProfile(KisProfile *profile);
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void setHDRExposure(float exposure);
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GLuint backgroundTexture() const;
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static const int BACKGROUND_TEXTURE_WIDTH = 32;
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static const int BACKGROUND_TEXTURE_HEIGHT = 32;
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// Get the image texture tile containing the point (pixelX, pixelY).
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GLuint imageTextureTile(int pixelX, int pixelY) const;
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int imageTextureTileWidth() const;
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int imageTextureTileHeight() const;
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/**
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* Select selection visualisation rendering.
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*
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* @param enable Set to true to enable selection visualisation rendering.
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*/
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void setSelectionDisplayEnabled(bool enable);
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/**
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* Update the image textures for the given image rectangle.
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*
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* @param imageRect The rectangle to update in image coordinates.
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*/
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void update(const TQRect& imageRect);
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signals:
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/**
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* Clients using the KisOpenGLImageContext should connect to the
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* following signals rather than to the KisImage's own equivalent
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* signals. This ensures that the image textures are always up to date
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* when used.
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*/
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/**
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* Emitted whenever an action has caused the image to be recomposited.
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*
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* @param rc The rect that has been recomposited.
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*/
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void sigImageUpdated(TQRect rc);
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/**
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* Emitted whenever the image size changes.
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*
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* @param width New image width
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* @param height New image height
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*/
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void sigSizeChanged(TQ_INT32 width, TQ_INT32 height);
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protected:
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KisOpenGLImageContext(KisImageSP image, KisProfile *monitorProfile);
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void generateBackgroundTexture();
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void createImageTextureTiles();
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void destroyImageTextureTiles();
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int imageTextureTileIndex(int x, int y) const;
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void updateImageTextureTiles(const TQRect& rect);
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static KisColorSpace* textureColorSpaceForImageColorSpace(KisColorSpace *imageColorSpace);
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static bool imageCanShareImageContext(KisImageSP image);
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protected slots:
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void slotImageUpdated(TQRect r);
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void slotImageSizeChanged(TQ_INT32 w, TQ_INT32 h);
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private:
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KisImageSP m_image;
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KisProfile *m_monitorProfile;
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float m_exposure;
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bool m_displaySelection;
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GLuint m_backgroundTexture;
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static const int PREFERRED_IMAGE_TEXTURE_WIDTH = 256;
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static const int PREFERRED_IMAGE_TEXTURE_HEIGHT = 256;
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TQValueVector<GLuint> m_imageTextureTiles;
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int m_imageTextureTileWidth;
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int m_imageTextureTileHeight;
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int m_numImageTextureTileColumns;
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// We create a single OpenGL context and share it between all views
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// in the process. Apparently with some OpenGL implementations, only
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// one context will be hardware accelerated.
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static TQGLWidget *SharedContextWidget;
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static int SharedContextWidgetRefCount;
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typedef std::map<KisImageSP, KisOpenGLImageContext*> ImageContextMap;
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static ImageContextMap imageContextMap;
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};
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#endif // HAVE_GL
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#endif // KIS_OPENGL_IMAGE_CONTEXT_H_
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