| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "SDL_config.h" |
| |
| #if SDL_VIDEO_DRIVER_ANDROID |
| |
| /* We're going to do this by default */ |
| #define SDL_ANDROID_BLOCK_ON_PAUSE 1 |
| |
| #include "SDL_androidevents.h" |
| #include "SDL_events.h" |
| |
| void |
| Android_PumpEvents(_THIS) |
| { |
| static int isPaused = 0; |
| #if SDL_ANDROID_BLOCK_ON_PAUSE |
| static int isPausing = 0; |
| #endif |
| /* No polling necessary */ |
| |
| /* |
| * Android_ResumeSem and Android_PauseSem are signaled from Java_org_libsdl_app_SDLActivity_nativePause and Java_org_libsdl_app_SDLActivity_nativeResume |
| * When the pause semaphore is signaled, if SDL_ANDROID_BLOCK_ON_PAUSE is defined the event loop will block until the resume signal is emitted. |
| * When the resume semaphore is signaled, SDL_GL_CreateContext is called which in turn calls Java code |
| * SDLActivity::createGLContext -> SDLActivity:: initEGL -> SDLActivity::createEGLSurface -> SDLActivity::createEGLContext |
| */ |
| |
| #if SDL_ANDROID_BLOCK_ON_PAUSE |
| if (isPaused && !isPausing) { |
| if(SDL_SemWait(Android_ResumeSem) == 0) { |
| #else |
| if (isPaused) { |
| if(SDL_SemTryWait(Android_ResumeSem) == 0) { |
| #endif |
| isPaused = 0; |
| /* TODO: Should we double check if we are on the same thread as the one that made the original GL context? |
| * This call will go through the following chain of calls in Java: |
| * SDLActivity::createGLContext -> SDLActivity:: initEGL -> SDLActivity::createEGLSurface -> SDLActivity::createEGLContext |
| * SDLActivity::createEGLContext will attempt to restore the GL context first, and if that fails it will create a new one |
| * If a new GL context is created, the user needs to restore the textures manually (TODO: notify the user that this happened with a message) |
| */ |
| SDL_GL_CreateContext(Android_Window); |
| } |
| } |
| else { |
| #if SDL_ANDROID_BLOCK_ON_PAUSE |
| if( isPausing || SDL_SemTryWait(Android_PauseSem) == 0 ) { |
| /* We've been signaled to pause, but before we block ourselves, we need to make sure that |
| SDL_WINDOWEVENT_FOCUS_LOST and SDL_WINDOWEVENT_MINIMIZED have reached the app */ |
| if (SDL_HasEvent(SDL_WINDOWEVENT)) { |
| isPausing = 1; |
| } |
| else { |
| isPausing = 0; |
| isPaused = 1; |
| } |
| } |
| #else |
| if(SDL_SemTryWait(Android_PauseSem) == 0) { |
| /* If we fall in here, the system is/was paused */ |
| isPaused = 1; |
| } |
| #endif |
| } |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_ANDROID */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |