VTK  9.3.0
vtkContextTransform.h
Go to the documentation of this file.
1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
3 
26 #ifndef vtkContextTransform_h
27 #define vtkContextTransform_h
28 
29 #include "vtkAbstractContextItem.h"
30 #include "vtkRenderingContext2DModule.h" // For export macro
31 #include "vtkSmartPointer.h" // Needed for SP ivars.
32 #include "vtkVector.h" // Needed for ivars.
33 
34 VTK_ABI_NAMESPACE_BEGIN
35 class vtkTransform2D;
36 
37 class VTKRENDERINGCONTEXT2D_EXPORT vtkContextTransform : public vtkAbstractContextItem
38 {
39 public:
41  void PrintSelf(ostream& os, vtkIndent indent) override;
42 
47 
53  void Update() override;
54 
58  bool Paint(vtkContext2D* painter) override;
59 
63  virtual void Identity();
64 
69  virtual void Translate(float dx, float dy);
70 
75  virtual void Scale(float dx, float dy);
76 
80  virtual void Rotate(float angle);
81 
86 
91 
96 
98 
102  vtkSetMacro(PanMouseButton, int);
103  vtkGetMacro(PanMouseButton, int);
105 
107 
111  vtkSetMacro(PanModifier, int);
112  vtkGetMacro(PanModifier, int);
114 
116 
120  vtkSetMacro(SecondaryPanMouseButton, int);
121  vtkGetMacro(SecondaryPanMouseButton, int);
123 
125 
129  vtkSetMacro(SecondaryPanModifier, int);
130  vtkGetMacro(SecondaryPanModifier, int);
132 
134 
138  vtkSetMacro(ZoomMouseButton, int);
139  vtkGetMacro(ZoomMouseButton, int);
141 
143 
147  vtkSetMacro(ZoomModifier, int);
148  vtkGetMacro(ZoomModifier, int);
150 
152 
156  vtkSetMacro(SecondaryZoomMouseButton, int);
157  vtkGetMacro(SecondaryZoomMouseButton, int);
159 
161 
165  vtkSetMacro(SecondaryZoomModifier, int);
166  vtkGetMacro(SecondaryZoomModifier, int);
168 
170 
173  vtkSetMacro(ZoomOnMouseWheel, bool);
174  vtkGetMacro(ZoomOnMouseWheel, bool);
175  vtkBooleanMacro(ZoomOnMouseWheel, bool);
177 
179 
182  vtkSetMacro(PanYOnMouseWheel, bool);
183  vtkGetMacro(PanYOnMouseWheel, bool);
184  vtkBooleanMacro(PanYOnMouseWheel, bool);
186 
190  bool Hit(const vtkContextMouseEvent& mouse) override;
191 
195  bool MouseButtonPressEvent(const vtkContextMouseEvent& mouse) override;
196 
200  bool MouseMoveEvent(const vtkContextMouseEvent& mouse) override;
201 
205  bool MouseWheelEvent(const vtkContextMouseEvent& mouse, int delta) override;
206 
207 protected:
210 
212 
221 
224 
226 
227 private:
228  vtkContextTransform(const vtkContextTransform&) = delete;
229  void operator=(const vtkContextTransform&) = delete;
230 };
231 
232 VTK_ABI_NAMESPACE_END
233 #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:59
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:38
describes linear transformations via a 3x3 matrix
@ point
Definition: vtkX3D.h:236