Mercurial > hg > orthanc-stone
diff Samples/Sdl/BasicScene.cpp @ 897:9c2f6d6b9f4a am-dev
Merge
author | Alain Mazy <alain@mazy.be> |
---|---|
date | Tue, 16 Jul 2019 12:37:29 +0200 |
parents | 56e4e9281076 0aff28f15ea2 |
children | 64e5f3ff6360 |
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--- a/Samples/Sdl/BasicScene.cpp Fri Jul 12 14:57:48 2019 +0200 +++ b/Samples/Sdl/BasicScene.cpp Tue Jul 16 12:37:29 2019 +0200 @@ -20,71 +20,243 @@ // From Stone -#include "../../Applications/Sdl/SdlOpenGLWindow.h" +#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 <boost/ref.hpp> #include <SDL.h> #include <stdio.h> - -#include "../Shared/SharedBasicScene.h" - -using namespace OrthancStone; +static const unsigned int FONT_SIZE = 32; +static const int LAYER_POSITION = 150; -boost::shared_ptr<BasicScene2DInteractor> interactor; -void HandleApplicationEvent(boost::shared_ptr<OrthancStone::ViewportController> controller, - const OrthancStone::OpenGLCompositor& compositor, - const SDL_Event& event) +void PrepareScene(OrthancStone::Scene2D& scene) { using namespace OrthancStone; - Scene2D& scene(*controller->GetScene()); - if (event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEMOTION) + + // 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::auto_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::auto_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 { - // TODO: this code is copy/pasted from GuiAdapter::Run() -> find the right place + std::auto_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::auto_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); - bool ctrlPressed(false); - bool shiftPressed(false); - bool altPressed(false); + + if (activeTracker.get() == NULL && + SDL_SCANCODE_LCTRL < scancodeCount && + keyboardState[SDL_SCANCODE_LCTRL]) + { + // The "left-ctrl" key is down, while no tracker is present - if (SDL_SCANCODE_LCTRL < scancodeCount && keyboardState[SDL_SCANCODE_LCTRL]) - ctrlPressed = true; - if (SDL_SCANCODE_RCTRL < scancodeCount && keyboardState[SDL_SCANCODE_RCTRL]) - ctrlPressed = true; - if (SDL_SCANCODE_LSHIFT < scancodeCount && keyboardState[SDL_SCANCODE_LSHIFT]) - shiftPressed = true; - if (SDL_SCANCODE_RSHIFT < scancodeCount && keyboardState[SDL_SCANCODE_RSHIFT]) - shiftPressed = true; - if (SDL_SCANCODE_LALT < scancodeCount && keyboardState[SDL_SCANCODE_LALT]) - altPressed = true; + 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()); - GuiAdapterMouseEvent guiEvent; - ConvertFromPlatform(guiEvent, ctrlPressed, shiftPressed, altPressed, event); - PointerEvent pointerEvent; - pointerEvent.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); - - interactor->OnMouseEvent(guiEvent, pointerEvent); - return; + 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::auto_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_KEYDOWN || event.type == SDL_KEYUP) && event.key.repeat == 0 /* Ignore key bounce */) + else if (event.type == SDL_MOUSEBUTTONDOWN) { - GuiAdapterKeyboardEvent guiEvent; - ConvertFromPlatform(guiEvent, event); + 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; - interactor->OnKeyboardEvent(guiEvent); + 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; + } + } } @@ -106,24 +278,24 @@ } -void Run(boost::shared_ptr<OrthancStone::ViewportController> controller) +void Run(OrthancStone::MessageBroker& broker, + OrthancStone::SdlViewport& viewport) { - SdlOpenGLWindow window("Hello", 1024, 768); - - controller->FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); + using namespace OrthancStone; + + boost::shared_ptr<ViewportController> controller( + new ViewportController(boost::make_shared<UndoStack>(), broker, viewport)); glEnable(GL_DEBUG_OUTPUT); glDebugMessageCallback(OpenGLMessageCallback, 0); - boost::shared_ptr<OpenGLCompositor> compositor(new OpenGLCompositor(window, *controller->GetScene())); - compositor->SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, - BASIC_SCENE_FONT_SIZE, Orthanc::Encoding_Latin1); - interactor->SetCompositor(compositor); + boost::shared_ptr<IFlexiblePointerTracker> tracker; + bool firstShown = true; bool stop = false; while (!stop) { - compositor->Refresh(); + viewport.Refresh(); SDL_Event event; while (!stop && @@ -134,10 +306,49 @@ stop = true; break; } - else if (event.type == SDL_WINDOWEVENT && - event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) + 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) { - compositor->UpdateSize(); + 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(); + 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 */) @@ -145,7 +356,7 @@ switch (event.key.keysym.sym) { case SDLK_f: - window.GetWindow().ToggleMaximize(); + viewport.GetContext().GetWindow().ToggleMaximize(); break; case SDLK_q: @@ -157,12 +368,11 @@ } } - HandleApplicationEvent(controller, *compositor, event); + HandleApplicationEvent(event, controller, tracker); } SDL_Delay(1); } - interactor.reset(); } @@ -175,26 +385,26 @@ **/ int main(int argc, char* argv[]) { - using namespace OrthancStone; - StoneInitialize(); + OrthancStone::StoneInitialize(); Orthanc::Logging::EnableInfoLevel(true); try { - MessageBroker broker; - boost::shared_ptr<UndoStack> undoStack(new UndoStack); - boost::shared_ptr<ViewportController> controller = boost::make_shared<ViewportController>( - undoStack, boost::ref(broker)); - interactor.reset(new BasicScene2DInteractor(controller)); - PrepareScene(controller); - Run(controller); + OrthancStone::SdlViewport viewport("Hello", 1024, 768); + 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(); } - StoneFinalize(); + OrthancStone::StoneFinalize(); return 0; }