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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkInteractiveArea.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 vtkInteractiveArea
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* @brief Implements zooming and panning in a vtkContextArea.
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*
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* Implements zooming and panning in a vtkContextArea.
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*/
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#ifndef vtkInteractiveArea_h
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#define vtkInteractiveArea_h
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#include "vtkChartsCoreModule.h" // For export macro
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#include "vtkContextArea.h"
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#include "vtkNew.h" // For vtkNew
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class vtkContextTransform;
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class vtkRectd;
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class VTKCHARTSCORE_EXPORT vtkInteractiveArea : public vtkContextArea
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{
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public:
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vtkTypeMacro(vtkInteractiveArea, vtkContextArea);
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static vtkInteractiveArea* New();
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void PrintSelf(ostream& os, vtkIndent indent) override;
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///@{
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/**
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* \brief vtkAbstractContextItem API
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*/
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bool Paint(vtkContext2D* painter) override;
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bool Hit(const vtkContextMouseEvent& mouse) override;
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bool MouseWheelEvent(const vtkContextMouseEvent& mouse, int delta) override;
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bool MouseMoveEvent(const vtkContextMouseEvent& mouse) override;
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bool MouseButtonPressEvent(const vtkContextMouseEvent& mouse) override;
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///@}
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protected:
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vtkInteractiveArea();
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~vtkInteractiveArea() override;
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///@{
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/**
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* \brief vtkContextArea API
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*/
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void SetAxisRange(vtkRectd const& data) override;
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private:
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/**
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* Re-scale axis when interacting.
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*/
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void RecalculateTickSpacing(vtkAxis* axis, int const numClicks);
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/**
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* Re-computes the transformation expressing the current zoom, panning, etc.
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*/
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void ComputeViewTransform() override;
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void ComputeZoom(
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vtkVector2d const& origin, vtkVector2d& scale, vtkVector2d& shift, vtkVector2d& factor);
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class MouseActions;
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MouseActions* Actions;
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vtkInteractiveArea(const vtkInteractiveArea&) = delete;
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void operator=(const vtkInteractiveArea&) = delete;
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};
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#endif // vtkInteractiveArea_h
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