2 * Copyright (c) 2023 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "canvas-view-impl.h"
22 #include <dali/devel-api/rendering/texture-devel.h>
23 #include <dali/devel-api/scripting/scripting.h>
24 #include <dali/integration-api/adaptor-framework/adaptor.h>
25 #include <dali/public-api/object/type-registry-helper.h>
26 #include <dali/public-api/object/type-registry.h>
29 #include <dali-toolkit/devel-api/controls/control-devel.h>
30 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
31 #include <dali-toolkit/internal/graphics/builtin-shader-extern-gen.h>
32 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
46 // Setup properties, signals and actions using the type-registry.
47 DALI_TYPE_REGISTRATION_BEGIN(Toolkit::CanvasView, Toolkit::Control, Create);
48 DALI_PROPERTY_REGISTRATION(Toolkit, CanvasView, "viewBox", VECTOR2, VIEW_BOX)
49 DALI_TYPE_REGISTRATION_END()
50 } // anonymous namespace
54 CanvasView::CanvasView(const Vector2& viewBox)
55 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT)),
56 mCanvasRenderer(CanvasRenderer::New(viewBox)),
63 CanvasView::~CanvasView()
65 if(Adaptor::IsAvailable())
67 Dali::AsyncTaskManager::Get().RemoveTask(mRasterizingTask);
68 mRasterizingTask.Reset();
69 Adaptor::Get().UnregisterProcessor(*this, true);
73 Toolkit::CanvasView CanvasView::New(const Vector2& viewBox)
75 CanvasView* impl = new CanvasView(viewBox);
77 Toolkit::CanvasView handle = Toolkit::CanvasView(*impl);
79 // Second-phase init of the implementation
80 // This can only be done after the CustomActor connection has been made...
86 /////////////////////////////////////////////////////////////
88 void CanvasView::OnInitialize()
90 // CanvasView can relayout in the OnImageReady, alternative to a signal would be to have a upcall from the Control to CanvasView
91 Dali::Toolkit::Control handle(GetOwner());
93 Self().SetProperty(DevelControl::Property::ACCESSIBILITY_ROLE, Dali::Accessibility::Role::IMAGE);
95 Adaptor::Get().RegisterProcessor(*this, true);
98 void CanvasView::OnRelayout(const Vector2& size, RelayoutContainer& container)
100 if(!mCanvasRenderer ||
101 !mCanvasRenderer.SetSize(size))
108 void CanvasView::OnSizeSet(const Vector3& targetSize)
110 Control::OnSizeSet(targetSize);
112 if(!mCanvasRenderer ||
113 !mCanvasRenderer.SetSize(Vector2(targetSize)))
117 mSize.width = targetSize.width;
118 mSize.height = targetSize.height;
121 void CanvasView::SetProperty(BaseObject* object, Property::Index propertyIndex, const Property::Value& value)
123 Toolkit::CanvasView canvasView = Toolkit::CanvasView::DownCast(Dali::BaseHandle(object));
126 CanvasView& canvasViewImpl(GetImpl(canvasView));
128 switch(propertyIndex)
130 case Toolkit::CanvasView::Property::VIEW_BOX:
132 Vector2 valueVector2;
133 if(value.Get(valueVector2))
135 canvasViewImpl.SetViewBox(valueVector2);
143 Property::Value CanvasView::GetProperty(BaseObject* object, Property::Index propertyIndex)
145 Property::Value value;
147 Toolkit::CanvasView canvasView = Toolkit::CanvasView::DownCast(Dali::BaseHandle(object));
151 CanvasView& canvasViewImpl(GetImpl(canvasView));
153 switch(propertyIndex)
155 case Toolkit::CanvasView::Property::VIEW_BOX:
157 value = canvasViewImpl.GetViewBox();
165 void CanvasView::Process(bool postProcessor)
167 if(mCanvasRenderer && mCanvasRenderer.IsCanvasChanged() && mSize.width > 0 && mSize.height > 0)
169 AddRasterizationTask();
173 void CanvasView::AddRasterizationTask()
175 mRasterizingTask = new CanvasRendererRasterizingTask(mCanvasRenderer, MakeCallback(this, &CanvasView::ApplyRasterizedImage));
177 if(mCanvasRenderer.Commit())
179 AsyncTaskManager::Get().AddTask(mRasterizingTask);
183 void CanvasView::ApplyRasterizedImage(CanvasRendererRasterizingTaskPtr task)
185 if(task->IsRasterized())
187 Texture rasterizedTexture = task->GetRasterizedTexture();
188 if(rasterizedTexture && rasterizedTexture.GetWidth() != 0 && rasterizedTexture.GetHeight() != 0)
192 std::string fragmentShader = SHADER_CANVAS_VIEW_FRAG.data();
193 DevelTexture::ApplyNativeFragmentShader(rasterizedTexture, fragmentShader);
195 mTextureSet = TextureSet::New();
196 Geometry geometry = VisualFactoryCache::CreateQuadGeometry();
197 Shader shader = Shader::New(SHADER_CANVAS_VIEW_VERT, fragmentShader);
198 Renderer renderer = Renderer::New(geometry, shader);
200 renderer.SetTextures(mTextureSet);
201 renderer.SetProperty(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA, true);
202 Self().AddRenderer(renderer);
204 mTextureSet.SetTexture(0, rasterizedTexture);
208 mRasterizingTask.Reset(); // We don't need it anymore
210 //If there are accumulated changes to CanvasRenderer during Rasterize, Rasterize once again.
211 if(mCanvasRenderer && mCanvasRenderer.IsCanvasChanged())
213 AddRasterizationTask();
217 bool CanvasView::AddDrawable(Dali::CanvasRenderer::Drawable& drawable)
219 if(mCanvasRenderer && mCanvasRenderer.AddDrawable(drawable))
226 bool CanvasView::RemoveDrawable(Dali::CanvasRenderer::Drawable& drawable)
228 if(mCanvasRenderer && mCanvasRenderer.RemoveDrawable(drawable))
235 bool CanvasView::RemoveAllDrawables()
237 if(mCanvasRenderer && mCanvasRenderer.RemoveAllDrawables())
244 bool CanvasView::SetViewBox(const Vector2& viewBox)
246 if(mCanvasRenderer && mCanvasRenderer.SetViewBox(viewBox))
253 const Vector2& CanvasView::GetViewBox()
257 return mCanvasRenderer.GetViewBox();
259 return Vector2::ZERO;
261 } // namespace Internal
262 } // namespace Toolkit