This is the extended version of mlGL2DFont (from MLOpenGL). More...
#include <View2DFont.h>
Public Types | |
| enum | AlignXMode { ALIGN_LEFT, ALIGN_RIGHT, ALIGN_CENTER } |
| align mode of multi-line text More... | |
Public Member Functions | |
| View2DFont () | |
| virtual | ~View2DFont () |
| virtual bool | init (const char *fontname=NULL)=0 |
| init with given font (either just a font name without .ttf or an absolute path) requires a valid GL context! | |
| virtual int | getFontHeight (float fontSize) const =0 |
| get height of font (ascender + descender) | |
| virtual int | getFontAscender (float fontSize) const =0 |
| get ascender of font | |
| virtual int | getFontDescender (float fontSize) const =0 |
| get descender of font | |
| virtual int | getStringWidth (float fontSize, const char *string, int len) const =0 |
| get width of simple string | |
| virtual void | drawString (float dx, float dy, float fontSize, const float *color, const char *string, int length, bool shadow=true)=0 |
| draws a simple string with no linefeeds, the drawing starts at the top-left corner | |
| virtual void | getTextSize (float fontSize, const char *text, int &width, int &height, float lineSpacing=0.0f) const |
| returns size of the box spanned by text box | |
| virtual void | drawText (float dx, float dy, float fontSize, const float *color, const char *text, AlignXMode mode, bool shadow=true, float lineSpacing=0.0f) |
| draws a multi-line text, lines are separated by , the drawing starts at the top-left corner | |
Detailed Description
This is the extended version of mlGL2DFont (from MLOpenGL).
Most calls are bridged towards mlGL2DFont, but it additionally features rendering of larger text blocks including line feeds. All strings are expected to be in UTF8 encoding.
The above figure illustrates how the fonts are rendered. The rendering starts at the top-left (x,y). The height of the font is given by the sum of ascender and descender.
Definition at line 26 of file View2DFont.h.
Member Enumeration Documentation
align mode of multi-line text
Definition at line 33 of file View2DFont.h.
Constructor & Destructor Documentation
| View2DFont::View2DFont | ( | ) |
| virtual View2DFont::~View2DFont | ( | ) | [virtual] |
Member Function Documentation
| virtual void View2DFont::drawString | ( | float | dx, |
| float | dy, | ||
| float | fontSize, | ||
| const float * | color, | ||
| const char * | string, | ||
| int | length, | ||
| bool | shadow = true |
||
| ) | [pure virtual] |
draws a simple string with no linefeeds, the drawing starts at the top-left corner
Implemented in View2DFontFTGL, and View2DFontQt.
| virtual void View2DFont::drawText | ( | float | dx, |
| float | dy, | ||
| float | fontSize, | ||
| const float * | color, | ||
| const char * | text, | ||
| AlignXMode | mode, | ||
| bool | shadow = true, |
||
| float | lineSpacing = 0.0f |
||
| ) | [virtual] |
draws a multi-line text, lines are separated by
, the drawing starts at the top-left corner
| virtual int View2DFont::getFontAscender | ( | float | fontSize | ) | const [pure virtual] |
get ascender of font
Implemented in View2DFontFTGL, and View2DFontQt.
| virtual int View2DFont::getFontDescender | ( | float | fontSize | ) | const [pure virtual] |
get descender of font
Implemented in View2DFontFTGL, and View2DFontQt.
| virtual int View2DFont::getFontHeight | ( | float | fontSize | ) | const [pure virtual] |
get height of font (ascender + descender)
Implemented in View2DFontFTGL, and View2DFontQt.
| virtual int View2DFont::getStringWidth | ( | float | fontSize, |
| const char * | string, | ||
| int | len | ||
| ) | const [pure virtual] |
get width of simple string
Implemented in View2DFontFTGL, and View2DFontQt.
| virtual void View2DFont::getTextSize | ( | float | fontSize, |
| const char * | text, | ||
| int & | width, | ||
| int & | height, | ||
| float | lineSpacing = 0.0f |
||
| ) | const [virtual] |
returns size of the box spanned by text box
| virtual bool View2DFont::init | ( | const char * | fontname = NULL | ) | [pure virtual] |
init with given font (either just a font name without .ttf or an absolute path) requires a valid GL context!
Implemented in View2DFontFTGL, and View2DFontQt.
The documentation for this class was generated from the following file:
- MeVisLab/Standard/Sources/Inventor/SoView2D/View2DFont.h
