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Readded HW cursor manager (no image rotation yet)
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May 13, 2015
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| #include "sdlcursormanager.hpp" | ||
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| #include <cassert> | ||
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| #include <SDL_mouse.h> | ||
| #include <SDL_endian.h> | ||
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| #include <osg/GraphicsContext> | ||
| #include <osg/Geometry> | ||
| #include <osg/Texture2D> | ||
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| #include "imagetosurface.hpp" | ||
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| namespace | ||
| { | ||
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| class MyGraphicsContext { | ||
| public: | ||
| MyGraphicsContext(int w, int h) | ||
| { | ||
| osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits; | ||
| traits->x = 0; | ||
| traits->y = 0; | ||
| traits->width = 1;//w; | ||
| traits->height = 1;//h; | ||
| traits->windowDecoration = false; | ||
| traits->doubleBuffer = false; | ||
| traits->sharedContext = 0; | ||
| traits->pbuffer = true; | ||
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| _gc = osg::GraphicsContext::createGraphicsContext(traits.get()); | ||
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| if (!_gc) | ||
| { | ||
| osg::notify(osg::NOTICE)<<"Failed to create pbuffer, failing back to normal graphics window."<<std::endl; | ||
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| traits->pbuffer = false; | ||
| _gc = osg::GraphicsContext::createGraphicsContext(traits.get()); | ||
| } | ||
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| if (_gc.valid()) | ||
| { | ||
| _gc->realize(); | ||
| _gc->makeCurrent(); | ||
| } | ||
| } | ||
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| osg::ref_ptr<osg::GraphicsContext> getContext() | ||
| { | ||
| return _gc; | ||
| } | ||
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| bool valid() const { return _gc.valid() && _gc->isRealized(); } | ||
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| private: | ||
| osg::ref_ptr<osg::GraphicsContext> _gc; | ||
| }; | ||
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| osg::ref_ptr<osg::Image> decompress (osg::ref_ptr<osg::Image> source) | ||
| { | ||
| int width = source->s(); | ||
| int height = source->t(); | ||
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| MyGraphicsContext context(width, height); | ||
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| osg::ref_ptr<osg::State> state = context.getContext()->getState(); | ||
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| osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D; | ||
| texture->setImage(source); | ||
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| state->applyTextureAttribute(0, texture); | ||
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| osg::ref_ptr<osg::Image> resultImage = new osg::Image; | ||
| resultImage->allocateImage(width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE); | ||
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| assert(resultImage->isDataContiguous()); | ||
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| // FIXME: implement for GL ES (PBO & glMapBufferRange?) | ||
| glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, resultImage->data()); | ||
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| source->releaseGLObjects(); | ||
| texture->releaseGLObjects(); | ||
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| return resultImage; | ||
| } | ||
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| } | ||
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| namespace SDLUtil | ||
| { | ||
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| SDLCursorManager::SDLCursorManager() : | ||
| mEnabled(false), | ||
| mInitialized(false) | ||
| { | ||
| } | ||
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| SDLCursorManager::~SDLCursorManager() | ||
| { | ||
| CursorMap::const_iterator curs_iter = mCursorMap.begin(); | ||
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| while(curs_iter != mCursorMap.end()) | ||
| { | ||
| SDL_FreeCursor(curs_iter->second); | ||
| ++curs_iter; | ||
| } | ||
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| mCursorMap.clear(); | ||
| } | ||
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| void SDLCursorManager::setEnabled(bool enabled) | ||
| { | ||
| if(mInitialized && enabled == mEnabled) | ||
| return; | ||
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| mInitialized = true; | ||
| mEnabled = enabled; | ||
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| //turn on hardware cursors | ||
| if(enabled) | ||
| { | ||
| _setGUICursor(mCurrentCursor); | ||
| } | ||
| //turn off hardware cursors | ||
| else | ||
| { | ||
| SDL_ShowCursor(SDL_FALSE); | ||
| } | ||
| } | ||
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| bool SDLCursorManager::cursorChanged(const std::string& name) | ||
| { | ||
| mCurrentCursor = name; | ||
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| CursorMap::const_iterator curs_iter = mCursorMap.find(name); | ||
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| //we have this cursor | ||
| if(curs_iter != mCursorMap.end()) | ||
| { | ||
| _setGUICursor(name); | ||
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| return false; | ||
| } | ||
| else | ||
| { | ||
| //they should get back to us with more info | ||
| return true; | ||
| } | ||
| } | ||
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| void SDLCursorManager::_setGUICursor(const std::string &name) | ||
| { | ||
| SDL_SetCursor(mCursorMap.find(name)->second); | ||
| } | ||
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| void SDLCursorManager::receiveCursorInfo(const std::string& name, int rotDegrees, osg::Image* image, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y) | ||
| { | ||
| _createCursorFromResource(name, rotDegrees, image, size_x, size_y, hotspot_x, hotspot_y); | ||
| } | ||
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| void SDLCursorManager::_createCursorFromResource(const std::string& name, int rotDegrees, osg::Image* image, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y) | ||
| { | ||
| if (mCursorMap.find(name) != mCursorMap.end()) | ||
| return; | ||
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| osg::ref_ptr<osg::Image> decompressed = decompress(image); | ||
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| // TODO: rotate | ||
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| SDL_Surface* surf = SDLUtil::imageToSurface(decompressed, false); | ||
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| //set the cursor and store it for later | ||
| SDL_Cursor* curs = SDL_CreateColorCursor(surf, hotspot_x, hotspot_y); | ||
| mCursorMap.insert(CursorMap::value_type(std::string(name), curs)); | ||
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| //clean up | ||
| SDL_FreeSurface(surf); | ||
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| _setGUICursor(name); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| #ifndef OPENMW_COMPONENTS_SDLUTIL_SDLCURSORMANAGER_H | ||
| #define OPENMW_COMPONENTS_SDLUTIL_SDLCURSORMANAGER_H | ||
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| #include <map> | ||
| #include <string> | ||
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| #include <SDL_types.h> | ||
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| struct SDL_Cursor; | ||
| struct SDL_Surface; | ||
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| namespace osg | ||
| { | ||
| class Image; | ||
| } | ||
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| namespace SDLUtil | ||
| { | ||
| class SDLCursorManager | ||
| { | ||
| public: | ||
| SDLCursorManager(); | ||
| virtual ~SDLCursorManager(); | ||
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| /// \brief sets whether to actively manage cursors or not | ||
| virtual void setEnabled(bool enabled); | ||
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| /// \brief Tell the manager that the cursor has changed, giving the | ||
| /// name of the cursor we changed to ("arrow", "ibeam", etc) | ||
| /// \return Whether the manager is interested in more information about the cursor | ||
| virtual bool cursorChanged(const std::string &name); | ||
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| /// \brief Follow up a cursorChanged() call with enough info to create an cursor. | ||
| virtual void receiveCursorInfo(const std::string &name, int rotDegrees, osg::Image* image, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y); | ||
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| private: | ||
| void _createCursorFromResource(const std::string &name, int rotDegrees, osg::Image* image, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y); | ||
| void _putPixel(SDL_Surface *surface, int x, int y, Uint32 pixel); | ||
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| void _setGUICursor(const std::string& name); | ||
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| typedef std::map<std::string, SDL_Cursor*> CursorMap; | ||
| CursorMap mCursorMap; | ||
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| std::string mCurrentCursor; | ||
| bool mEnabled; | ||
| bool mInitialized; | ||
| }; | ||
| } | ||
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| #endif |
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