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# irr::gui::IGUIFont Class Reference

Font interface. More...

`#include <IGUIFont.h>`

Inheritance diagram for irr::gui::IGUIFont:

List of all members.

## Public Member Functions
virtual void | draw (const core::stringw &text, const core::rect< s32 > &position, video::SColor color, bool hcenter=false, bool vcenter=false, const core::rect< s32 > *clip=0)=0
| Draws some text and clips it to the specified rectangle if wanted.
virtual s32 | getCharacterFromPos (const wchar_t *text, s32 pixel_x) const =0
| Calculates the index of the character in the text which is on a specific position.
virtual core::dimension2d< u32 > | getDimension (const wchar_t *text) const =0
| Calculates the width and height of a given string of text.
virtual s32 | getKerningHeight () const =0
| Returns the distance between letters.
virtual s32 | getKerningWidth (const wchar_t *thisLetter=0, const wchar_t *previousLetter=0) const =0
| Gets kerning values (distance between letters) for the font. If no parameters are provided,.
virtual EGUI_FONT_TYPE | getType () const
| Returns the type of this font.
virtual void | setInvisibleCharacters (const wchar_t *s)=0
| Define which characters should not be drawn by the font.
virtual void | setKerningHeight (s32 kerning)=0
| Sets global kerning height for the font.
virtual void | setKerningWidth (s32 kerning)=0
| Sets global kerning width for the font.

## Detailed Description

Font interface.

Definition at line 39 of file IGUIFont.h.

## Member Function Documentation

virtual void irr::gui::IGUIFont::draw | ( | const core::stringw & | text,
|  | const core::rect< s32 > & | position,
|  | video::SColor | color,
|  | bool | hcenter = `false`,
|  | bool | vcenter = `false`,
|  | const core::rect< s32 > * | clip = `0` |
| ) |  |  | `[pure virtual]`

Draws some text and clips it to the specified rectangle if wanted.

Parameters:

  | text,: | Text to draw
  | position,: | Rectangle specifying position where to draw the text.
  | color,: | Color of the text
  | hcenter,: | Specifies if the text should be centered horizontally into the rectangle.
  | vcenter,: | Specifies if the text should be centered vertically into the rectangle.
  | clip,: | Optional pointer to a rectangle against which the text will be clipped. If the pointer is null, no clipping will be done.

virtual s32 irr::gui::IGUIFont::getCharacterFromPos | ( | const wchar_t * | text,
|  | s32 | pixel_x |
| ) |  |  | const`[pure virtual]`

Calculates the index of the character in the text which is on a specific position.

Parameters:

  | text,: | Text string.
  | pixel_x,: | X pixel position of which the index of the character will be returned.

Returns:
  Returns zero based index of the character in the text, and -1 if no no character is on this position. (=the text is too short).

virtual core::dimension2d<u32> irr::gui::IGUIFont::getDimension | ( | const wchar_t * | text | ) | const`[pure virtual]`

Calculates the width and height of a given string of text.

Returns:
  Returns width and height of the area covered by the text if it would be drawn.

virtual s32 irr::gui::IGUIFont::getKerningHeight | ( |  | ) | const`[pure virtual]`

Returns the distance between letters.

virtual s32 irr::gui::IGUIFont::getKerningWidth | ( | const wchar_t * | thisLetter = `0`,
|  | const wchar_t * | previousLetter = `0` |
| ) |  |  | const`[pure virtual]`

Gets kerning values (distance between letters) for the font. If no parameters are provided,.

the global kerning distance is returned.

Parameters:

  | thisLetter,: | If this parameter is provided, the left side kerning for this letter is added to the global kerning value. For example, a space might only be one pixel wide, but it may be displayed as several pixels.
  | previousLetter,: | If provided, kerning is calculated for both letters and added to the global kerning value. For example, in a font which supports kerning pairs a string such as 'Wo' may have the 'o' tucked neatly under the 'W'.

Implemented in irr::gui::IGUIFontBitmap.

virtual EGUI_FONT_TYPE irr::gui::IGUIFont::getType | ( |  | ) | const`[inline, virtual]`

Returns the type of this font.

Reimplemented in irr::gui::IGUIFontBitmap.

Definition at line 68 of file IGUIFont.h.

References irr::gui::EGFT_CUSTOM.

virtual void irr::gui::IGUIFont::setInvisibleCharacters | ( | const wchar_t * | s | ) | `[pure virtual]`

Define which characters should not be drawn by the font.

For example " " would not draw any space which is usually blank in most fonts.

Parameters:

  | s | String of symbols which are not send down to the videodriver

virtual void irr::gui::IGUIFont::setKerningHeight | ( | s32 | kerning | ) | `[pure virtual]`

Sets global kerning height for the font.

virtual void irr::gui::IGUIFont::setKerningWidth | ( | s32 | kerning | ) | `[pure virtual]`

Sets global kerning width for the font.

The documentation for this class was generated from the following file:

- IGUIFont.h

| The Irrlicht Engine Documentation © 2003-2010 by Nikolaus Gebhardt. Generated on Sun Oct 24 12:42:04 2010 by Doxygen (1.6.2)