VTK
dox/Rendering/vtkLabelRenderStrategy.h
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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    vtkLabelRenderStrategy.h
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00022 #ifndef __vtkLabelRenderStrategy_h
00023 #define __vtkLabelRenderStrategy_h
00024 
00025 #include "vtkObject.h"
00026 
00027 #include "vtkStdString.h" // For string support
00028 #include "vtkUnicodeString.h" // For unicode string support
00029 
00030 class vtkRenderer;
00031 class vtkWindow;
00032 class vtkTextProperty;
00033 
00034 class VTK_RENDERING_EXPORT vtkLabelRenderStrategy : public vtkObject
00035 {
00036  public:
00037   void PrintSelf(ostream& os, vtkIndent indent);
00038   vtkTypeMacro(vtkLabelRenderStrategy, vtkObject);
00039 
00041 
00044   virtual bool SupportsRotation()
00045     { return true; }
00047 
00049 
00054   virtual bool SupportsBoundedSize()
00055     { return true; }
00057 
00059 
00060   virtual void SetRenderer(vtkRenderer* ren);
00061   vtkGetObjectMacro(Renderer, vtkRenderer);
00063 
00065 
00066   virtual void SetDefaultTextProperty(vtkTextProperty* tprop);
00067   vtkGetObjectMacro(DefaultTextProperty, vtkTextProperty);
00069 
00070   //BTX
00072 
00075   virtual void ComputeLabelBounds(vtkTextProperty* tprop, vtkStdString label, double bds[4])
00076     { this->ComputeLabelBounds(tprop, vtkUnicodeString::from_utf8(label.c_str()), bds); }
00077   virtual void ComputeLabelBounds(vtkTextProperty* tprop, vtkUnicodeString label, double bds[4]) = 0;
00079 
00081 
00088   virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label)
00089     { this->RenderLabel(x, tprop, vtkUnicodeString::from_utf8(label)); }
00090   virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label, int maxWidth)
00091     { this->RenderLabel(x, tprop, vtkUnicodeString::from_utf8(label), maxWidth); }
00092   virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label) = 0;
00093   virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label, int vtkNotUsed(maxWidth))
00094     { this->RenderLabel(x, tprop, label); }
00095   //ETX
00097 
00099   virtual void StartFrame() { }
00100 
00102   virtual void EndFrame() { }
00103 
00107   virtual void ReleaseGraphicsResources(vtkWindow *) { }
00108 
00109 protected:
00110   vtkLabelRenderStrategy();
00111   ~vtkLabelRenderStrategy();
00112 
00113   vtkRenderer* Renderer;
00114   vtkTextProperty* DefaultTextProperty;
00115 
00116 private:
00117   vtkLabelRenderStrategy(const vtkLabelRenderStrategy&);  // Not implemented.
00118   void operator=(const vtkLabelRenderStrategy&);  // Not implemented.
00119 };
00120 
00121 #endif
00122