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86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkQWidgetTexture.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#ifndef vtkQWidgetTexture_h
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#define vtkQWidgetTexture_h
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#include "vtkGUISupportQtModule.h" // For export macro
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#include "vtkTextureObject.h"
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#include <functional> // for ivar
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class QGraphicsScene;
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class QOffscreenSurface;
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class QOpenGLFramebufferObject;
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class QWidget;
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/**
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* @class vtkQWidgetTexture
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* @brief Allows a QWidget to be used as a texture in VTK with OpenGL
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*
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* This class works by rendering the QWidget into a Framebuffer
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* and then sending the OpenGL texture handle to VTK for rendering.
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*/
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class VTKGUISUPPORTQT_EXPORT vtkQWidgetTexture : public vtkTextureObject
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{
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public:
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static vtkQWidgetTexture* New();
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vtkTypeMacro(vtkQWidgetTexture, vtkTextureObject);
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//@{
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/**
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* Set/Get the QWidget that this TextureObject will render/use
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*/
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void SetWidget(QWidget* w);
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QWidget* GetWidget() { return this->Widget; }
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//@}
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/**
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* get the QScene used for rendering, this is where events will
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* be forwarded to.
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*/
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QGraphicsScene* GetScene() { return this->Scene; }
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/**
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* Activate and Bind the texture. Ovrloaded to handle the opengl related
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* setup at the same time. as We know the context will be active then.
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*/
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void Activate() override;
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/**
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* Free resources
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*/
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void ReleaseGraphicsResources(vtkWindow* win) override;
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protected:
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vtkQWidgetTexture();
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~vtkQWidgetTexture() override;
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QGraphicsScene* Scene;
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QOffscreenSurface* OffscreenSurface;
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QOpenGLFramebufferObject* Framebuffer;
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QWidget* Widget;
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// method called when the widget needs repainting
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std::function<void()> RedrawMethod;
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// internal method to setup the scene/framebuffer/etc
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void AllocateFromWidget();
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private:
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vtkQWidgetTexture(const vtkQWidgetTexture&) = delete;
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void operator=(const vtkQWidgetTexture&) = delete;
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};
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#endif
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