Mercurial > hg > orthanc-stone
diff Deprecated/Samples/Sdl/BasicScene.cpp @ 1402:65e1e4b08302
moved deprecated samples into Deprecated
author | Alain Mazy <alain@mazy.be> |
---|---|
date | Wed, 29 Apr 2020 20:50:53 +0200 |
parents | Samples/Deprecated/Sdl/BasicScene.cpp@eac254fb6791 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Deprecated/Samples/Sdl/BasicScene.cpp Wed Apr 29 20:50:53 2020 +0200 @@ -0,0 +1,418 @@ +/** + * 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; +}