VTK  9.3.0
vtkFreeTypeLabelRenderStrategy.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
12 #ifndef vtkFreeTypeLabelRenderStrategy_h
13 #define vtkFreeTypeLabelRenderStrategy_h
14 
15 #include "vtkLabelRenderStrategy.h"
16 #include "vtkRenderingLabelModule.h" // For export macro
17 
18 VTK_ABI_NAMESPACE_BEGIN
19 class vtkActor2D;
20 class vtkTextRenderer;
21 class vtkTextMapper;
22 
23 class VTKRENDERINGLABEL_EXPORT vtkFreeTypeLabelRenderStrategy : public vtkLabelRenderStrategy
24 {
25 public:
26  void PrintSelf(ostream& os, vtkIndent indent) override;
29 
33  bool SupportsRotation() override { return false; }
34 
38  bool SupportsBoundedSize() override { return false; }
39 
43  void ComputeLabelBounds(vtkTextProperty* tprop, vtkStdString label, double bds[4]) override;
44 
49  void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label) override;
50 
56  void ReleaseGraphicsResources(vtkWindow* window) override;
57 
58 protected:
61 
65 
66 private:
68  void operator=(const vtkFreeTypeLabelRenderStrategy&) = delete;
69 };
70 
71 VTK_ABI_NAMESPACE_END
72 #endif
a actor that draws 2D data
Definition: vtkActor2D.h:44
bool SupportsBoundedSize() override
The free type render strategy currently does not support bounded size labels.
bool SupportsRotation() override
The free type render strategy currently does not support rotation.
void ReleaseGraphicsResources(vtkWindow *window) override
Release any graphics resources that are being consumed by this strategy.
~vtkFreeTypeLabelRenderStrategy() override
void RenderLabel(int x[2], vtkTextProperty *tprop, vtkStdString label) override
Render a label at a location in world coordinates.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
static vtkFreeTypeLabelRenderStrategy * New()
void ComputeLabelBounds(vtkTextProperty *tprop, vtkStdString label, double bds[4]) override
Compute the bounds of a label.
a simple class to control print indentation
Definition: vtkIndent.h:38
Superclass for label rendering implementations.
Wrapper around std::string to keep symbols short.
Definition: vtkStdString.h:38
2D text annotation
Definition: vtkTextMapper.h:49
represent text properties.
Interface for generating images and path data from string data, using multiple backends.
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37