Mercurial > hg > orthanc-stone
view OrthancStone/Sources/Viewport/SdlWindow.cpp @ 1584:bd180f97c734
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 21 Oct 2020 17:33:17 +0200 |
parents | 244ad1e4e76a |
children |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2020 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 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 * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "SdlWindow.h" #if ORTHANC_ENABLE_SDL == 1 #include <Logging.h> #include <OrthancException.h> #ifdef WIN32 #include <windows.h> // for SetProcessDpiAware #endif // WIN32 #include <SDL_render.h> #include <SDL_video.h> #include <SDL.h> namespace OrthancStone { SdlWindow::SdlWindow(const char* title, unsigned int width, unsigned int height, bool enableOpenGl, bool allowDpiScaling) : maximized_(false) { // TODO Understand why, with SDL_WINDOW_OPENGL + MinGW32 + Release // build mode, the application crashes whenever the SDL window is // resized or maximized uint32_t windowFlags, rendererFlags; if (enableOpenGl) { windowFlags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE; rendererFlags = SDL_RENDERER_ACCELERATED; } else { windowFlags = SDL_WINDOW_RESIZABLE; rendererFlags = SDL_RENDERER_SOFTWARE; } // TODO: probably required on MacOS X, too #if defined(WIN32) && (_WIN32_WINNT >= 0x0600) if (!allowDpiScaling) { // if we do NOT allow DPI scaling, it means an SDL pixel will be a real // monitor pixel. This is needed for high-DPI applications // Enable high-DPI support on Windows // THE FOLLOWING HAS BEEN COMMENTED OUT BECAUSE IT WILL CRASH UNDER // OLD WINDOWS VERSIONS // ADD THIS AT THE TOP TO ENABLE IT: // //#pragma comment(lib, "Shcore.lib") THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness //#include <windows.h> //#include <ShellScalingAPI.h> THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness //#include <comdef.h> THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness // SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE); // This is supported on Vista+ SetProcessDPIAware(); windowFlags |= SDL_WINDOW_ALLOW_HIGHDPI; } #endif // WIN32 window_ = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, windowFlags); if (window_ == NULL) { LOG(ERROR) << "Cannot create the SDL window: " << SDL_GetError(); throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } renderer_ = SDL_CreateRenderer(window_, -1, rendererFlags); if (!renderer_) { LOG(ERROR) << "Cannot create the SDL renderer: " << SDL_GetError(); SDL_DestroyWindow(window_); throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } } SdlWindow::~SdlWindow() { if (renderer_ != NULL) { SDL_DestroyRenderer(renderer_); } if (window_ != NULL) { SDL_DestroyWindow(window_); } } unsigned int SdlWindow::GetWidth() const { int w = -1; SDL_GetWindowSize(window_, &w, NULL); if (w < 0) { throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } else { return static_cast<unsigned int>(w); } } unsigned int SdlWindow::GetHeight() const { int h = -1; SDL_GetWindowSize(window_, NULL, &h); if (h < 0) { throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } else { return static_cast<unsigned int>(h); } } void SdlWindow::Render(SDL_Surface* surface) { /** * "You are strongly encouraged to call SDL_RenderClear() to * initialize the backbuffer before starting each new frame's * drawing, even if you plan to overwrite every pixel." * https://wiki.libsdl.org/SDL_RenderPresent **/ SDL_SetRenderDrawColor(renderer_, 0, 0, 0, 255); SDL_RenderClear(renderer_); // Clear the entire screen to our selected color SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer_, surface); if (texture != NULL) { SDL_RenderCopy(renderer_, texture, NULL, NULL); SDL_DestroyTexture(texture); } SDL_RenderPresent(renderer_); } void SdlWindow::ToggleMaximize() { if (maximized_) { SDL_RestoreWindow(window_); maximized_ = false; } else { SDL_MaximizeWindow(window_); maximized_ = true; } } void SdlWindow::GlobalInitialize() { if (SDL_Init(SDL_INIT_VIDEO) != 0) { LOG(ERROR) << "Cannot initialize SDL"; throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } } void SdlWindow::GlobalFinalize() { SDL_Quit(); } } #endif