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111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkQtLabelRenderStrategy.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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/**
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* @class vtkQtLabelRenderStrategy
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* @brief Renders labels with Qt
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*
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*
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* This class uses Qt to render labels and compute sizes. The labels are
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* rendered to a QImage, then EndFrame() converts that image to a vtkImageData
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* and textures the image onto a quad spanning the render area.
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*/
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#ifndef vtkQtLabelRenderStrategy_h
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#define vtkQtLabelRenderStrategy_h
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#include "vtkLabelRenderStrategy.h"
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#include "vtkRenderingQtModule.h" // For export macro
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class vtkLabelSizeCalculator;
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class vtkLabeledDataMapper;
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class vtkPlaneSource;
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class vtkPolyDataMapper2D;
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class vtkQImageToImageSource;
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class vtkTexture;
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class vtkTexturedActor2D;
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class vtkTextureMapToPlane;
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class VTKRENDERINGQT_EXPORT vtkQtLabelRenderStrategy : public vtkLabelRenderStrategy
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{
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public:
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void PrintSelf(ostream& os, vtkIndent indent) override;
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vtkTypeMacro(vtkQtLabelRenderStrategy, vtkLabelRenderStrategy);
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static vtkQtLabelRenderStrategy* New();
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/**
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* Compute the bounds of a label. Must be performed after the renderer is set.
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*/
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void ComputeLabelBounds(vtkTextProperty* tprop, vtkStdString label, double bds[4]) override
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{
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this->Superclass::ComputeLabelBounds(tprop, label, bds);
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}
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void ComputeLabelBounds(vtkTextProperty* tprop, vtkUnicodeString label, double bds[4]) override;
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//@{
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/**
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* Render a label at a location in world coordinates.
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* Must be performed between StartFrame() and EndFrame() calls.
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*/
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void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label) override
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{
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this->Superclass::RenderLabel(x, tprop, label);
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}
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void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label, int maxWidth) override
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{
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this->Superclass::RenderLabel(x, tprop, label, maxWidth);
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}
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void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label) override;
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void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label, int maxWidth) override;
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//@}
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/**
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* Start a rendering frame. Renderer must be set.
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*/
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void StartFrame() override;
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/**
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* End a rendering frame.
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*/
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void EndFrame() override;
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/**
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* Release any graphics resources that are being consumed by this strategy.
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* The parameter window could be used to determine which graphic
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* resources to release.
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*/
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void ReleaseGraphicsResources(vtkWindow* window) override;
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protected:
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vtkQtLabelRenderStrategy();
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~vtkQtLabelRenderStrategy() override;
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class Internals;
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Internals* Implementation;
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vtkQImageToImageSource* QImageToImage;
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vtkPlaneSource* PlaneSource;
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vtkTextureMapToPlane* TextureMapToPlane;
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vtkTexture* Texture;
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vtkPolyDataMapper2D* Mapper;
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vtkTexturedActor2D* Actor;
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bool AntialiasText; // Should the text be antialiased, inherited from render window.
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private:
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vtkQtLabelRenderStrategy(const vtkQtLabelRenderStrategy&) = delete;
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void operator=(const vtkQtLabelRenderStrategy&) = delete;
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};
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#endif
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