mirror of https://github.com/OpenMW/openmw.git
Readded HW cursor manager (no image rotation yet)
scrawl
10 years ago
parent
4825744a03
commit
9ea416b852
@ -0,0 +1,182 @@
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#include "sdlcursormanager.hpp"
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#include <cassert>
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#include <SDL_mouse.h>
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#include <SDL_endian.h>
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#include <osg/GraphicsContext>
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#include <osg/Geometry>
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#include <osg/Texture2D>
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#include "imagetosurface.hpp"
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namespace
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{
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class MyGraphicsContext {
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public:
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MyGraphicsContext(int w, int h)
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = 0;
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traits->y = 0;
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traits->width = 1;//w;
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traits->height = 1;//h;
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traits->windowDecoration = false;
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traits->doubleBuffer = false;
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traits->sharedContext = 0;
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traits->pbuffer = true;
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_gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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if (!_gc)
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{
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osg::notify(osg::NOTICE)<<"Failed to create pbuffer, failing back to normal graphics window."<<std::endl;
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traits->pbuffer = false;
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_gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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}
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if (_gc.valid())
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{
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_gc->realize();
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_gc->makeCurrent();
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}
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}
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osg::ref_ptr<osg::GraphicsContext> getContext()
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{
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return _gc;
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}
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bool valid() const { return _gc.valid() && _gc->isRealized(); }
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private:
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osg::ref_ptr<osg::GraphicsContext> _gc;
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};
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osg::ref_ptr<osg::Image> decompress (osg::ref_ptr<osg::Image> source)
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{
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int width = source->s();
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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;
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texture->setImage(source);
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state->applyTextureAttribute(0, texture);
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osg::ref_ptr<osg::Image> resultImage = new osg::Image;
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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?)
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glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, resultImage->data());
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source->releaseGLObjects();
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texture->releaseGLObjects();
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return resultImage;
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}
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}
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namespace SDLUtil
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{
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SDLCursorManager::SDLCursorManager() :
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mEnabled(false),
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mInitialized(false)
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{
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}
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SDLCursorManager::~SDLCursorManager()
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{
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CursorMap::const_iterator curs_iter = mCursorMap.begin();
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while(curs_iter != mCursorMap.end())
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{
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SDL_FreeCursor(curs_iter->second);
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++curs_iter;
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}
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mCursorMap.clear();
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}
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void SDLCursorManager::setEnabled(bool enabled)
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{
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if(mInitialized && enabled == mEnabled)
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return;
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mInitialized = true;
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mEnabled = enabled;
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//turn on hardware cursors
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if(enabled)
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{
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_setGUICursor(mCurrentCursor);
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}
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//turn off hardware cursors
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else
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{
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SDL_ShowCursor(SDL_FALSE);
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}
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}
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bool SDLCursorManager::cursorChanged(const std::string& name)
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{
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mCurrentCursor = name;
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CursorMap::const_iterator curs_iter = mCursorMap.find(name);
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//we have this cursor
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if(curs_iter != mCursorMap.end())
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{
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_setGUICursor(name);
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return false;
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}
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else
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{
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//they should get back to us with more info
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return true;
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}
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}
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void SDLCursorManager::_setGUICursor(const std::string &name)
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{
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SDL_SetCursor(mCursorMap.find(name)->second);
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}
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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)
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{
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_createCursorFromResource(name, rotDegrees, image, size_x, size_y, hotspot_x, hotspot_y);
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}
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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)
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{
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if (mCursorMap.find(name) != mCursorMap.end())
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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
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SDL_Cursor* curs = SDL_CreateColorCursor(surf, hotspot_x, hotspot_y);
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mCursorMap.insert(CursorMap::value_type(std::string(name), curs));
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//clean up
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SDL_FreeSurface(surf);
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_setGUICursor(name);
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}
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}
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@ -0,0 +1,51 @@
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#ifndef OPENMW_COMPONENTS_SDLUTIL_SDLCURSORMANAGER_H
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#define OPENMW_COMPONENTS_SDLUTIL_SDLCURSORMANAGER_H
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#include <map>
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#include <string>
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#include <SDL_types.h>
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struct SDL_Cursor;
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struct SDL_Surface;
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namespace osg
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{
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class Image;
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}
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namespace SDLUtil
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{
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class SDLCursorManager
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{
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public:
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SDLCursorManager();
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virtual ~SDLCursorManager();
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/// \brief sets whether to actively manage cursors or not
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virtual void setEnabled(bool enabled);
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/// \brief Tell the manager that the cursor has changed, giving the
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/// name of the cursor we changed to ("arrow", "ibeam", etc)
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/// \return Whether the manager is interested in more information about the cursor
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virtual bool cursorChanged(const std::string &name);
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/// \brief Follow up a cursorChanged() call with enough info to create an cursor.
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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:
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void _createCursorFromResource(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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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;
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CursorMap mCursorMap;
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std::string mCurrentCursor;
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bool mEnabled;
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bool mInitialized;
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};
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}
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#endif
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@ -1,27 +0,0 @@
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set(SDL4OGRE_LIBRARY "sdl4ogre")
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# Sources
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set(SDL4OGRE_SOURCE_FILES
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sdlinputwrapper.cpp
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sdlcursormanager.cpp
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sdlwindowhelper.cpp
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imagerotate.cpp
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)
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if (APPLE)
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set(SDL4OGRE_SOURCE_FILES ${SDL4OGRE_SOURCE_FILES} osx_utils.mm)
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endif ()
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set(SDL4OGRE_HEADER_FILES
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OISCompat.h
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cursormanager.hpp
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events.h
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)
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add_library(${SDL4OGRE_LIBRARY} STATIC ${SDL4OGRE_SOURCE_FILES} ${SDL4OGRE_HEADER_FILES})
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link_directories(${CMAKE_CURRENT_BINARY_DIR})
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target_link_libraries(${SDL4OGRE_LIBRARY} ${SDL2_LIBRARY})
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@ -1,30 +0,0 @@
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#ifndef SDL4OGRE_CURSOR_MANAGER_H
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#define SDL4OGRE_CURSOR_MANAGER_H
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#include <SDL_types.h>
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#include <string>
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#include <OgreTexture.h>
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#include <OgrePrerequisites.h>
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namespace SFO
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{
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class CursorManager
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{
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public:
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virtual ~CursorManager(){}
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/// \brief Tell the manager that the cursor has changed, giving the
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/// name of the cursor we changed to ("arrow", "ibeam", etc)
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/// \return Whether the manager is interested in more information about the cursor
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virtual bool cursorChanged(const std::string &name) = 0;
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/// \brief Follow up a cursorChanged() call with enough info to create an cursor.
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virtual void receiveCursorInfo(const std::string &name, int rotDegrees, Ogre::TexturePtr tex, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y) = 0;
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/// \brief sets whether to actively manage cursors or not
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virtual void setEnabled(bool enabled) = 0;
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};
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}
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#endif
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@ -1,161 +0,0 @@
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#include "sdlcursormanager.hpp"
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#include <OgreHardwarePixelBuffer.h>
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#include <OgreTextureManager.h>
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#include <OgreRoot.h>
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#include <SDL_mouse.h>
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#include <SDL_endian.h>
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#include "imagerotate.hpp"
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namespace SFO
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{
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SDLCursorManager::SDLCursorManager() :
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mEnabled(false),
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mInitialized(false)
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{
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}
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SDLCursorManager::~SDLCursorManager()
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{
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CursorMap::const_iterator curs_iter = mCursorMap.begin();
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while(curs_iter != mCursorMap.end())
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{
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SDL_FreeCursor(curs_iter->second);
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++curs_iter;
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}
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mCursorMap.clear();
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}
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void SDLCursorManager::setEnabled(bool enabled)
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{
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if(mInitialized && enabled == mEnabled)
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return;
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mInitialized = true;
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mEnabled = enabled;
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//turn on hardware cursors
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if(enabled)
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{
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_setGUICursor(mCurrentCursor);
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}
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//turn off hardware cursors
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else
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{
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SDL_ShowCursor(SDL_FALSE);
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}
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}
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bool SDLCursorManager::cursorChanged(const std::string &name)
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{
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mCurrentCursor = name;
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CursorMap::const_iterator curs_iter = mCursorMap.find(name);
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//we have this cursor
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if(curs_iter != mCursorMap.end())
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{
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_setGUICursor(name);
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return false;
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}
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else
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{
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//they should get back to us with more info
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return true;
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}
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}
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void SDLCursorManager::_setGUICursor(const std::string &name)
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{
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SDL_SetCursor(mCursorMap.find(name)->second);
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}
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void SDLCursorManager::receiveCursorInfo(const std::string& name, int rotDegrees, Ogre::TexturePtr tex, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y)
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{
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_createCursorFromResource(name, rotDegrees, tex, size_x, size_y, hotspot_x, hotspot_y);
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}
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/// \brief creates an SDL cursor from an Ogre texture
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void SDLCursorManager::_createCursorFromResource(const std::string& name, int rotDegrees, Ogre::TexturePtr tex, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y)
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{
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if (mCursorMap.find(name) != mCursorMap.end())
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return;
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std::string tempName = tex->getName() + "_rotated";
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// we use a render target to uncompress the DDS texture
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// just blitting doesn't seem to work on D3D9
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ImageRotate::rotate(tex->getName(), tempName, static_cast<float>(-rotDegrees));
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Ogre::TexturePtr resultTexture = Ogre::TextureManager::getSingleton().getByName(tempName);
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// now blit to memory
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Ogre::Image destImage;
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resultTexture->convertToImage(destImage);
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SDL_Surface* surf = SDL_CreateRGBSurface(0,size_x,size_y,32,0xFF000000,0x00FF0000,0x0000FF00,0x000000FF);
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//copy the Ogre texture to an SDL surface
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for(size_t x = 0; x < size_x; ++x)
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{
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for(size_t y = 0; y < size_y; ++y)
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{
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Ogre::ColourValue clr = destImage.getColourAt(x, y, 0);
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//set the pixel on the SDL surface to the same value as the Ogre texture's
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_putPixel(surf, x, y, SDL_MapRGBA(surf->format, static_cast<Uint8>(clr.r * 255),
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static_cast<Uint8>(clr.g * 255), static_cast<Uint8>(clr.b * 255), static_cast<Uint8>(clr.a * 255)));
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}
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}
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//set the cursor and store it for later
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SDL_Cursor* curs = SDL_CreateColorCursor(surf, hotspot_x, hotspot_y);
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mCursorMap.insert(CursorMap::value_type(std::string(name), curs));
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//clean up
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SDL_FreeSurface(surf);
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Ogre::TextureManager::getSingleton().remove(tempName);
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_setGUICursor(name);
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}
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void SDLCursorManager::_putPixel(SDL_Surface *surface, int x, int y, Uint32 pixel)
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{
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int bpp = surface->format->BytesPerPixel;
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/* Here p is the address to the pixel we want to set */
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Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
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switch(bpp) {
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case 1:
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*p = pixel;
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break;
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case 2:
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*(Uint16 *)p = pixel;
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break;
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case 3:
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if(SDL_BYTEORDER == SDL_BIG_ENDIAN) {
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p[0] = (pixel >> 16) & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = pixel & 0xff;
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} else {
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p[0] = pixel & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = (pixel >> 16) & 0xff;
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}
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break;
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case 4:
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*(Uint32 *)p = pixel;
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break;
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}
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}
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}
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@ -1,39 +0,0 @@
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#ifndef SDL4OGRE_CURSORMANAGER_H
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#define SDL4OGRE_CURSORMANAGER_H
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#include "cursormanager.hpp"
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#include <map>
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struct SDL_Cursor;
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struct SDL_Surface;
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namespace SFO
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{
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class SDLCursorManager :
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public CursorManager
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{
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public:
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SDLCursorManager();
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virtual ~SDLCursorManager();
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virtual void setEnabled(bool enabled);
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virtual bool cursorChanged(const std::string &name);
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virtual void receiveCursorInfo(const std::string &name, int rotDegrees, Ogre::TexturePtr tex, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y);
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private:
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void _createCursorFromResource(const std::string &name, int rotDegrees, Ogre::TexturePtr tex, Uint8 size_x, Uint8 size_y, Uint8 hotspot_x, Uint8 hotspot_y);
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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;
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CursorMap mCursorMap;
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std::string mCurrentCursor;
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bool mEnabled;
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bool mInitialized;
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};
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}
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#endif
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