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osg::TextPixmapGlyph

osg::TextPixmapGlyph Class Reference

#include <OSGTextPixmapGlyph.h>

Inheritance diagram for osg::TextPixmapGlyph:

osg::TextGlyph List of all members.

Public Types

typedef Int32 Index
enum  { INVALID_INDEX = -1 }

Public Member Functions

virtual ~TextPixmapGlyph ()
virtual Real32 getWidth () const
virtual Real32 getHeight () const
virtual Real32 getHoriBearingX () const
virtual Real32 getHoriBearingY () const
virtual Real32 getVertBearingX () const
virtual Real32 getVertBearingY () const
UInt32 getPixmapWidth () const
UInt32 getPixmapPitch () const
UInt32 getPixmapHeight () const
const UInt8 * getPixmap () const
void putPixmap (Int32 x, Int32 y, UInt8 *tex, UInt32 width, UInt32 height) const
Index getGlyphIndex () const
Real32 getHoriAdvance () const
Real32 getVertAdvance () const

Protected Member Functions

 TextPixmapGlyph ()
void flipPixmap ()

Protected Attributes

UInt32 _width
UInt32 _pitch
UInt32 _height
Int32 _horiBearingX
Int32 _horiBearingY
Int32 _vertBearingX
Int32 _vertBearingY
UInt8 * _pixmap
Index _glyphIndex
Real32 _horiAdvance
Real32 _vertAdvance

Private Member Functions

 TextPixmapGlyph (const TextPixmapGlyph &)
const TextPixmapGlyph & operator= (const TextPixmapGlyph &)

Friends

class TextPixmapFace

Detailed Description

Defines a pixmap glyph.
Author:
Patrick Dähne

Definition at line 61 of file OSGTextPixmapGlyph.h.

Member Typedef Documentation

typedef Int32 osg::TextGlyph::Index [inherited]
 

Defines the glyph index

Definition at line 65 of file OSGTextGlyph.h.

Member Enumeration Documentation

anonymous enum [inherited]
 

Defines the invalid glyph index

Enumerator:
INVALID_INDEX 

Definition at line 68 of file OSGTextGlyph.h.

00068 { INVALID_INDEX = -1 };

Constructor & Destructor Documentation

osg::TextPixmapGlyph::~TextPixmapGlyph (   )  [virtual]
 

Destroys the TextPixmapGlyph object.

Definition at line 52 of file OSGTextPixmapGlyph.cpp.

References _pixmap.

00053 { delete [] _pixmap; }

osg::TextPixmapGlyph::TextPixmapGlyph (   )  [inline, protected]
 

Creates a new TextPixmapGlyph object.

Definition at line 68 of file OSGTextPixmapGlyph.inl.

00069 : TextGlyph(), _width(0), _pitch(0), _height(0), _horiBearingX(0), _horiBearingY(0), _vertBearingX(0), _vertBearingY(0), _pixmap(0)
00070 {}

osg::TextPixmapGlyph::TextPixmapGlyph (  const TextPixmapGlyph &   )  [private]
 

Copy constructor (not implemented!)

Member Function Documentation

Real32 osg::TextPixmapGlyph::getWidth (   )  const [virtual]
 

Returns the width of the glyph.

Returns:
The width of the glyph

Implements osg::TextGlyph.

Definition at line 60 of file OSGTextPixmapGlyph.cpp.

References _width.

00061 { return static_cast<Real32>(_width); }

Real32 osg::TextPixmapGlyph::getHeight (   )  const [virtual]
 

Returns the height of the glyph.

Returns:
The height of the glyph

Implements osg::TextGlyph.

Definition at line 68 of file OSGTextPixmapGlyph.cpp.

References _height.

00069 { return static_cast<Real32>(_height); }

Real32 osg::TextPixmapGlyph::getHoriBearingX (   )  const [virtual]
 

Returns the x bearing of the glyph for horizontal layout. The x bearing is the distance from the origin to the left border of the glyph.

Returns:
The x bearing of the glyph for horizontal layout

Implements osg::TextGlyph.

Definition at line 76 of file OSGTextPixmapGlyph.cpp.

References _horiBearingX.

00077 { return static_cast<Real32>(_horiBearingX); }

Real32 osg::TextPixmapGlyph::getHoriBearingY (   )  const [virtual]
 

Returns the y bearing of the glyph for horizontal layout. The y bearing is the distance from the origin to the top border of the glyph.

Returns:
The y bearing of the glyph for horizontal layout

Implements osg::TextGlyph.

Definition at line 84 of file OSGTextPixmapGlyph.cpp.

References _horiBearingY.

00085 { return static_cast<Real32>(_horiBearingY); }

Real32 osg::TextPixmapGlyph::getVertBearingX (   )  const [virtual]
 

Returns the x bearing of the glyph for vertical layout. The x bearing is the distance from the origin to the left border of the glyph.

Returns:
The x bearing of the glyph for vertical layout

Implements osg::TextGlyph.

Definition at line 92 of file OSGTextPixmapGlyph.cpp.

References _vertBearingX.

00093 { return static_cast<Real32>(_vertBearingX); }

Real32 osg::TextPixmapGlyph::getVertBearingY (   )  const [virtual]
 

Returns the y bearing of the glyph for vertical layout. The y bearing is the distance from the origin to the top border of the glyph.

Returns:
The y bearing of the glyph for vertical layout

Implements osg::TextGlyph.

Definition at line 100 of file OSGTextPixmapGlyph.cpp.

References _vertBearingY.

00101 { return static_cast<Real32>(_vertBearingY); }

UInt32 osg::TextPixmapGlyph::getPixmapWidth (   )  const [inline]
 

Returns the width of the pixmap in pixels.

Returns:
The width of the pixmap in pixels

Definition at line 43 of file OSGTextPixmapGlyph.inl.

References _width.

00043 { return _width; }

UInt32 osg::TextPixmapGlyph::getPixmapPitch (   )  const [inline]
 

Returns the pitch of the pixmap (the number of bytes per row).

Returns:
The pitch of the pixmap

Definition at line 46 of file OSGTextPixmapGlyph.inl.

References _pitch.

00046 { return _pitch; }

UInt32 osg::TextPixmapGlyph::getPixmapHeight (   )  const [inline]
 

Returns the height of the pixmap in pixels.

Returns:
The height of the pixmap in pixels

Definition at line 49 of file OSGTextPixmapGlyph.inl.

References _height.

00049 { return _height; }

const UInt8 * osg::TextPixmapGlyph::getPixmap (   )  const [inline]
 

Returns the pixmap.

Returns:
The pixmap

Definition at line 65 of file OSGTextPixmapGlyph.inl.

References _pixmap.

00065 { return _pixmap; }

void osg::TextPixmapGlyph::putPixmap (  Int32  x,
Int32  y,
UInt8 *  tex,
UInt32  width,
UInt32  height
)  const
 

Copies the glyph pixmap into a texture.

Parameters:
x The x position in the texture in pixels
y The y position in the texture in pixels
tex The texture
width The width of the texture in pixels
height The height of the texture in pixels

Definition at line 108 of file OSGTextPixmapGlyph.cpp.

References _height, _pitch, _pixmap, _width, and p.

Referenced by osg::TextPixmapFace::makeImage().

00110 {
00111     if (_pixmap != 0)
00112     {
00113         // Clip the glyph at the left border of the texture
00114         int left = 0;
00115         int glyphWidth = _width;
00116         int src = 0;
00117         int dst = 0;
00118         int delta = x;
00119         if (delta < left)
00120         {
00121             delta = left - delta;
00122             src += delta;
00123             glyphWidth -= delta;
00124             delta = left;
00125         }
00126         dst += delta;
00127 
00128         // Clip the glyph at the right border of the texture
00129         int right = width;
00130         delta = right - dst;
00131         if (delta < glyphWidth)
00132             glyphWidth =  delta;
00133 
00134         // Clip the glyph at the bottom border of the texture
00135         int bottom  = 0;
00136         int glyphHeight = _height;
00137         delta = y - _height;
00138         if (delta < bottom)
00139         {
00140             delta = bottom - delta;
00141             src += delta * _pitch;
00142             glyphHeight -= delta;
00143             delta = bottom;
00144         }
00145         dst += delta * width;
00146 
00147         // Clip the glyph at the top border of the texture
00148         int top = height;
00149         delta = top - y /*- _horiBearingY*/;
00150         if (delta < 0)
00151             glyphHeight += delta;
00152 
00153         int xi, yi;
00154         for (yi = glyphHeight; yi > 0; --yi)
00155         {
00156             unsigned char *srcPtr = &(_pixmap[src]);
00157             unsigned char *dstPtr = &(tex[dst]);
00158             for (xi = glyphWidth; xi > 0; --xi)
00159             {
00160                 unsigned char p = 255 - ((255 - *dstPtr) * (255 - *srcPtr) / 255);
00161                 *dstPtr++ = p;
00162                 srcPtr++;
00163             }
00164             src += _pitch;
00165             dst += width;
00166         }
00167     }
00168 }

void osg::TextPixmapGlyph::flipPixmap (   )  [protected]
 

Flips the glyph pixmap around the x axis.

Definition at line 175 of file OSGTextPixmapGlyph.cpp.

References _height, _pitch, _pixmap, and _width.

00176 {
00177     if (_pixmap == 0)
00178         return;
00179     unsigned char *ptr1 = _pixmap;
00180     unsigned char *ptr2 = _pixmap + _pitch * (_height - 1);
00181     unsigned int x, y;
00182     for (y = _height >> 1; y > 0; --y)
00183     {
00184         for (x = 0; x < _width; ++x)
00185         {
00186             unsigned char h = ptr1[x];
00187             ptr1[x] = ptr2[x];
00188             ptr2[x] = h;
00189         }
00190         ptr1 += _pitch;
00191         ptr2 -= _pitch;
00192     }
00193 }

const TextPixmapGlyph& osg::TextPixmapGlyph::operator= (  const TextPixmapGlyph &   )  [private]
 

Copy operator (not implemented!)

TextGlyph::Index osg::TextGlyph::getGlyphIndex (   )  const [inline, inherited]
 

Returns the index of the glyph.

Returns:
The index of the glyph

Definition at line 43 of file OSGTextGlyph.inl.

References osg::TextGlyph::_glyphIndex.

00043 { return _glyphIndex; }

Real32 osg::TextGlyph::getHoriAdvance (   )  const [inline, inherited]
 

Returns the advance of the glyph for horizontal layout. The advance is the distance to the next character on the base line.

Returns:
The advance for horizontal layout

Definition at line 46 of file OSGTextGlyph.inl.

References osg::TextGlyph::_horiAdvance.

00046 { return _horiAdvance; }

Real32 osg::TextGlyph::getVertAdvance (   )  const [inline, inherited]
 

Returns the advance of the glyph for vertical layout. The advance is the distance to the next character on the base line. This value is usually negative!

Returns:
The advance for vertical layout

Definition at line 49 of file OSGTextGlyph.inl.

References osg::TextGlyph::_vertAdvance.

00049 { return _vertAdvance; }

Friends And Related Function Documentation

friend class TextPixmapFace [friend]
 

Needs access to constructor

Definition at line 65 of file OSGTextPixmapGlyph.h.

Member Data Documentation

UInt32 osg::TextPixmapGlyph::_width [protected]
 

The width of the pixmap in pixels

Definition at line 195 of file OSGTextPixmapGlyph.h.

Referenced by flipPixmap(), getPixmapWidth(), getWidth(), and putPixmap().

UInt32 osg::TextPixmapGlyph::_pitch [protected]
 

The pitch of the pixmap (number of bytes per row)

Definition at line 198 of file OSGTextPixmapGlyph.h.

Referenced by flipPixmap(), getPixmapPitch(), and putPixmap().

UInt32 osg::TextPixmapGlyph::_height [protected]
 

The height of the pixmap in pixels

Definition at line 201 of file OSGTextPixmapGlyph.h.

Referenced by flipPixmap(), getHeight(), getPixmapHeight(), and putPixmap().

Int32 osg::TextPixmapGlyph::_horiBearingX [protected]
 

The x bearing of the pixmap in pixels for horizontal layout

Definition at line 204 of file OSGTextPixmapGlyph.h.

Referenced by getHoriBearingX().

Int32 osg::TextPixmapGlyph::_horiBearingY [protected]
 

The y bearing of the pixmap in pixels for horizontal layout

Definition at line 207 of file OSGTextPixmapGlyph.h.

Referenced by getHoriBearingY().

Int32 osg::TextPixmapGlyph::_vertBearingX [protected]
 

The x bearing of the pixmap in pixels for vertical layout

Definition at line 210 of file OSGTextPixmapGlyph.h.

Referenced by getVertBearingX().

Int32 osg::TextPixmapGlyph::_vertBearingY [protected]
 

The y bearing of the pixmap in pixels for vertical layout

Definition at line 213 of file OSGTextPixmapGlyph.h.

Referenced by getVertBearingY().

UInt8* osg::TextPixmapGlyph::_pixmap [protected]
 

The pixmap

Definition at line 216 of file OSGTextPixmapGlyph.h.

Referenced by flipPixmap(), getPixmap(), putPixmap(), and ~TextPixmapGlyph().

Index osg::TextGlyph::_glyphIndex [protected, inherited]
 

The index of the glyph

Definition at line 145 of file OSGTextGlyph.h.

Referenced by osg::TextGlyph::getGlyphIndex().

Real32 osg::TextGlyph::_horiAdvance [protected, inherited]
 

The advance of the glyph for horizontal layout

Definition at line 148 of file OSGTextGlyph.h.

Referenced by osg::TextGlyph::getHoriAdvance().

Real32 osg::TextGlyph::_vertAdvance [protected, inherited]
 

The advance of the glyph for vertical layout

Definition at line 151 of file OSGTextGlyph.h.

Referenced by osg::TextGlyph::getVertAdvance().

The documentation for this class was generated from the following files:
Generated on Thu Aug 25 04:23:06 2005 for OpenSG by  doxygen 1.4.3