VTK  9.3.0
vtkContextTransform.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
3 
17 #ifndef vtkContextTransform_h
18 #define vtkContextTransform_h
19 
20 #include "vtkAbstractContextItem.h"
21 #include "vtkRenderingContext2DModule.h" // For export macro
22 #include "vtkSmartPointer.h" // Needed for SP ivars.
23 #include "vtkVector.h" // Needed for ivars.
24 
25 VTK_ABI_NAMESPACE_BEGIN
26 class vtkTransform2D;
27 
28 class VTKRENDERINGCONTEXT2D_EXPORT vtkContextTransform : public vtkAbstractContextItem
29 {
30 public:
32  void PrintSelf(ostream& os, vtkIndent indent) override;
33 
38 
44  void Update() override;
45 
49  bool Paint(vtkContext2D* painter) override;
50 
54  virtual void Identity();
55 
60  virtual void Translate(float dx, float dy);
61 
66  virtual void Scale(float dx, float dy);
67 
71  virtual void Rotate(float angle);
72 
77 
82 
87 
89 
93  vtkSetMacro(PanMouseButton, int);
94  vtkGetMacro(PanMouseButton, int);
96 
98 
102  vtkSetMacro(PanModifier, int);
103  vtkGetMacro(PanModifier, int);
105 
107 
111  vtkSetMacro(SecondaryPanMouseButton, int);
112  vtkGetMacro(SecondaryPanMouseButton, int);
114 
116 
120  vtkSetMacro(SecondaryPanModifier, int);
121  vtkGetMacro(SecondaryPanModifier, int);
123 
125 
129  vtkSetMacro(ZoomMouseButton, int);
130  vtkGetMacro(ZoomMouseButton, int);
132 
134 
138  vtkSetMacro(ZoomModifier, int);
139  vtkGetMacro(ZoomModifier, int);
141 
143 
147  vtkSetMacro(SecondaryZoomMouseButton, int);
148  vtkGetMacro(SecondaryZoomMouseButton, int);
150 
152 
156  vtkSetMacro(SecondaryZoomModifier, int);
157  vtkGetMacro(SecondaryZoomModifier, int);
159 
161 
164  vtkSetMacro(ZoomOnMouseWheel, bool);
165  vtkGetMacro(ZoomOnMouseWheel, bool);
166  vtkBooleanMacro(ZoomOnMouseWheel, bool);
168 
170 
173  vtkSetMacro(PanYOnMouseWheel, bool);
174  vtkGetMacro(PanYOnMouseWheel, bool);
175  vtkBooleanMacro(PanYOnMouseWheel, bool);
177 
181  bool Hit(const vtkContextMouseEvent& mouse) override;
182 
186  bool MouseButtonPressEvent(const vtkContextMouseEvent& mouse) override;
187 
191  bool MouseMoveEvent(const vtkContextMouseEvent& mouse) override;
192 
196  bool MouseWheelEvent(const vtkContextMouseEvent& mouse, int delta) override;
197 
198 protected:
201 
203 
212 
215 
217 
218 private:
219  vtkContextTransform(const vtkContextTransform&) = delete;
220  void operator=(const vtkContextTransform&) = delete;
221 };
222 
223 VTK_ABI_NAMESPACE_END
224 #endif // vtkContextTransform_h
base class for items that are part of a vtkContextScene.
Class for drawing 2D primitives to a graphical context.
Definition: vtkContext2D.h:50
data structure to represent mouse events.
all children of this item are transformed by the vtkTransform2D of this item.
bool MouseWheelEvent(const vtkContextMouseEvent &mouse, int delta) override
Mouse wheel event.
bool Paint(vtkContext2D *painter) override
Paint event for the item, called whenever the item needs to be drawn.
virtual void Identity()
Reset the transform to the identity transformation.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
virtual vtkTransform2D * GetTransform()
Access the vtkTransform2D that controls object transformation.
virtual void Translate(float dx, float dy)
Translate the item by the specified amounts dx and dy in the x and y directions.
bool MouseMoveEvent(const vtkContextMouseEvent &mouse) override
Mouse move event.
bool MouseButtonPressEvent(const vtkContextMouseEvent &mouse) override
Mouse press event.
vtkVector2f MapToParent(const vtkVector2f &point) override
Transforms a point to the parent coordinate system.
static vtkContextTransform * New()
Creates a vtkContextTransform object.
bool Hit(const vtkContextMouseEvent &mouse) override
Returns true if the transform is interactive, false otherwise.
~vtkContextTransform() override
void Update() override
Perform any updates to the item that may be necessary before rendering.
vtkVector2f MapFromParent(const vtkVector2f &point) override
Transforms a point from the parent coordinate system.
virtual void Scale(float dx, float dy)
Scale the item by the specified amounts dx and dy in the x and y directions.
vtkSmartPointer< vtkTransform2D > Transform
virtual void Rotate(float angle)
Rotate the item by the specified angle.
a simple class to control print indentation
Definition: vtkIndent.h:29
describes linear transformations via a 3x3 matrix
@ point
Definition: vtkX3D.h:236