Mercurial > hg > orthanc-stone
view Samples/Deprecated/Sdl/BasicScene.cpp @ 1368:33da5d02885f broker
SdlSimpleViewer rename
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Sat, 18 Apr 2020 14:45:22 +0200 |
parents | eac254fb6791 |
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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/>. **/ // From Stone #include "../../Framework/Viewport/SdlViewport.h" #include "../../Framework/Scene2D/CairoCompositor.h" #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" #include "../../Framework/Scene2D/OpenGLCompositor.h" #include "../../Framework/Scene2D/PanSceneTracker.h" #include "../../Framework/Scene2D/RotateSceneTracker.h" #include "../../Framework/Scene2D/ZoomSceneTracker.h" #include "../../Framework/Scene2DViewport/ViewportController.h" #include "../../Framework/Scene2DViewport/UndoStack.h" #include "../../Framework/StoneInitialization.h" #include "../../Framework/Messages/MessageBroker.h" // From Orthanc framework #include <Core/Logging.h> #include <Core/OrthancException.h> #include <Core/Images/Image.h> #include <Core/Images/ImageProcessing.h> #include <Core/Images/PngWriter.h> #include <boost/make_shared.hpp> #include <SDL.h> #include <stdio.h> static const unsigned int FONT_SIZE = 32; static const int LAYER_POSITION = 150; #define OPENGL_ENABLED 0 void PrepareScene(OrthancStone::Scene2D& scene) { using namespace OrthancStone; // Texture of 2x2 size { Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); p[0] = 255; p[1] = 0; p[2] = 0; p[3] = 0; p[4] = 255; p[5] = 0; p = reinterpret_cast<uint8_t*>(i.GetRow(1)); p[0] = 0; p[1] = 0; p[2] = 255; p[3] = 255; p[4] = 0; p[5] = 0; scene.SetLayer(12, new ColorTextureSceneLayer(i)); std::unique_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); l->SetOrigin(-3, 2); l->SetPixelSpacing(1.5, 1); l->SetAngle(20.0 / 180.0 * M_PI); scene.SetLayer(14, l.release()); } // Texture of 1x1 size { Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); p[0] = 255; p[1] = 0; p[2] = 0; std::unique_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); l->SetOrigin(-2, 1); l->SetAngle(20.0 / 180.0 * M_PI); scene.SetLayer(13, l.release()); } // Some lines { std::unique_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); layer->SetThickness(10); PolylineSceneLayer::Chain chain; chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); layer->AddChain(chain, true, 255, 0, 0); chain.clear(); chain.push_back(ScenePoint2D(-5, -5)); chain.push_back(ScenePoint2D(5, -5)); chain.push_back(ScenePoint2D(5, 5)); chain.push_back(ScenePoint2D(-5, 5)); layer->AddChain(chain, true, 0, 255, 0); double dy = 1.01; chain.clear(); chain.push_back(ScenePoint2D(-4, -4)); chain.push_back(ScenePoint2D(4, -4 + dy)); chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); chain.push_back(ScenePoint2D(4, 2)); layer->AddChain(chain, false, 0, 0, 255); scene.SetLayer(50, layer.release()); } // Some text { std::unique_ptr<TextSceneLayer> layer(new TextSceneLayer); layer->SetText("Hello"); scene.SetLayer(100, layer.release()); } } void TakeScreenshot(const std::string& target, const OrthancStone::Scene2D& scene, unsigned int canvasWidth, unsigned int canvasHeight) { using namespace OrthancStone; // Take a screenshot, then save it as PNG file CairoCompositor compositor(scene, canvasWidth, canvasHeight); compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); compositor.Refresh(); Orthanc::ImageAccessor canvas; compositor.GetCanvas().GetReadOnlyAccessor(canvas); Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); Orthanc::ImageProcessing::Convert(png, canvas); Orthanc::PngWriter writer; writer.WriteToFile(target, png); } void HandleApplicationEvent(const SDL_Event& event, boost::shared_ptr<OrthancStone::ViewportController>& controller, boost::shared_ptr<OrthancStone::IFlexiblePointerTracker>& activeTracker) { using namespace OrthancStone; Scene2D& scene = controller->GetScene(); IViewport& viewport = controller->GetViewport(); if (event.type == SDL_MOUSEMOTION) { int scancodeCount = 0; const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); if (activeTracker.get() == NULL && SDL_SCANCODE_LCTRL < scancodeCount && keyboardState[SDL_SCANCODE_LCTRL]) { // The "left-ctrl" key is down, while no tracker is present PointerEvent e; e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); char buf[64]; sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); if (scene.HasLayer(LAYER_POSITION)) { TextSceneLayer& layer = dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); layer.SetText(buf); layer.SetPosition(p.GetX(), p.GetY()); } else { std::unique_ptr<TextSceneLayer> layer(new TextSceneLayer); layer->SetColor(0, 255, 0); layer->SetText(buf); layer->SetBorder(20); layer->SetAnchor(BitmapAnchor_BottomCenter); layer->SetPosition(p.GetX(), p.GetY()); scene.SetLayer(LAYER_POSITION, layer.release()); } } else { scene.DeleteLayer(LAYER_POSITION); } } else if (event.type == SDL_MOUSEBUTTONDOWN) { PointerEvent e; e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); switch (event.button.button) { case SDL_BUTTON_MIDDLE: activeTracker = boost::make_shared<PanSceneTracker>(controller, e); break; case SDL_BUTTON_RIGHT: activeTracker = boost::make_shared<ZoomSceneTracker> (controller, e, viewport.GetCanvasHeight()); break; case SDL_BUTTON_LEFT: activeTracker = boost::make_shared<RotateSceneTracker>(controller, e); break; default: break; } } else if (event.type == SDL_KEYDOWN && event.key.repeat == 0 /* Ignore key bounce */) { switch (event.key.keysym.sym) { case SDLK_s: controller->FitContent(viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); break; case SDLK_c: TakeScreenshot("screenshot.png", scene, viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); break; default: break; } } } #if OPENGL_ENABLED==1 static void GLAPIENTRY OpenGLMessageCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam ) { if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) { fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), type, severity, message ); } } #endif void Run(OrthancStone::MessageBroker& broker, OrthancStone::SdlViewport& viewport) { using namespace OrthancStone; boost::shared_ptr<ViewportController> controller( new ViewportController(boost::make_shared<UndoStack>(), broker, viewport)); #if OPENGL_ENABLED==1 glEnable(GL_DEBUG_OUTPUT); glDebugMessageCallback(OpenGLMessageCallback, 0); #endif boost::shared_ptr<IFlexiblePointerTracker> tracker; bool firstShown = true; bool stop = false; while (!stop) { viewport.Refresh(); SDL_Event event; while (!stop && SDL_PollEvent(&event)) { if (event.type == SDL_QUIT) { stop = true; break; } else if (event.type == SDL_MOUSEMOTION) { if (tracker) { PointerEvent e; e.AddPosition(viewport.GetPixelCenterCoordinates( event.button.x, event.button.y)); tracker->PointerMove(e); } } else if (event.type == SDL_MOUSEBUTTONUP) { if (tracker) { PointerEvent e; e.AddPosition(viewport.GetPixelCenterCoordinates( event.button.x, event.button.y)); tracker->PointerUp(e); if(!tracker->IsAlive()) tracker.reset(); } } else if (event.type == SDL_WINDOWEVENT) { switch (event.window.event) { case SDL_WINDOWEVENT_SIZE_CHANGED: tracker.reset(); viewport.UpdateSize(event.window.data1, event.window.data2); break; case SDL_WINDOWEVENT_SHOWN: if (firstShown) { // Once the window is first shown, fit the content to its size controller->FitContent(viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); firstShown = false; } break; default: break; } } else if (event.type == SDL_KEYDOWN && event.key.repeat == 0 /* Ignore key bounce */) { switch (event.key.keysym.sym) { case SDLK_f: viewport.GetWindow().ToggleMaximize(); break; case SDLK_q: stop = true; break; default: break; } } HandleApplicationEvent(event, controller, tracker); } SDL_Delay(1); } } /** * IMPORTANT: The full arguments to "main()" are needed for SDL on * Windows. Otherwise, one gets the linking error "undefined reference * to `SDL_main'". https://wiki.libsdl.org/FAQWindows **/ int main(int argc, char* argv[]) { OrthancStone::StoneInitialize(); Orthanc::Logging::EnableInfoLevel(true); try { #if OPENGL_ENABLED==1 OrthancStone::SdlOpenGLViewport viewport("Hello", 1024, 768); #else OrthancStone::SdlCairoViewport viewport("Hello", 1024, 768); #endif PrepareScene(viewport.GetScene()); viewport.GetCompositor().SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); OrthancStone::MessageBroker broker; Run(broker, viewport); } catch (Orthanc::OrthancException& e) { LOG(ERROR) << "EXCEPTION: " << e.What(); } OrthancStone::StoneFinalize(); return 0; }