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91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkContextItem.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 vtkContextClip
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* @brief all children of this item are clipped
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* by the specified area.
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*
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*
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* This class can be used to clip the rendering of an item inside a rectangular
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* area.
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*/
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#ifndef vtkContextClip_h
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#define vtkContextClip_h
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#include "vtkAbstractContextItem.h"
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#include "vtkRenderingContext2DModule.h" // For export macro
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#include "vtkSmartPointer.h" // Needed for SP ivars.
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class VTKRENDERINGCONTEXT2D_EXPORT vtkContextClip : public vtkAbstractContextItem
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{
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public:
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vtkTypeMacro(vtkContextClip, vtkAbstractContextItem);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Creates a vtkContextClip object.
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*/
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static vtkContextClip* New();
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/**
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* Perform any updates to the item that may be necessary before rendering.
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* The scene should take care of calling this on all items before their
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* Paint function is invoked.
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*/
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void Update() override;
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/**
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* Paint event for the item, called whenever the item needs to be drawn.
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*/
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bool Paint(vtkContext2D* painter) override;
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/**
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* Set the origin, width and height of the clipping rectangle. These are in
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* pixel coordinates.
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*/
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virtual void SetClip(float x, float y, float width, float height);
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/**
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* Get the clipping rectangle parameters in pixel coordinates:
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*/
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virtual void GetRect(float rect[4]);
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virtual float GetX() { return Dims[0]; }
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virtual float GetY() { return Dims[1]; }
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virtual float GetWidth() { return Dims[2]; }
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virtual float GetHeight() { return Dims[3]; }
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protected:
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vtkContextClip();
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~vtkContextClip() override;
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float Dims[4];
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private:
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vtkContextClip(const vtkContextClip&) = delete;
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void operator=(const vtkContextClip&) = delete;
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};
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inline void vtkContextClip::GetRect(float rect[4])
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{
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rect[0] = this->Dims[0];
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rect[1] = this->Dims[1];
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rect[2] = this->Dims[2];
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rect[3] = this->Dims[3];
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}
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#endif // vtkContextClip_h
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