forked from KolibriOS/kolibrios
47 lines
2.3 KiB
Plaintext
47 lines
2.3 KiB
Plaintext
SDL_bdf version 1.2
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http://www.geocities.com/andre_leiradella/
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For copyright information see the source files.
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SDL_bdf is a small library that renders BDF fonts. As of version 1.2, SDL_bdf
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doesn't depend on SDL anymore, you can use it with any graphics library throgh
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it's API, but the bundled exampled uses SDL to show a text with a BDF font on
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the screen.
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The library has been tested with SDL under Windows but should work on any
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platform/graphics library. The functions provided are:
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. BDF_Font *BDF_OpenFont(BDF_ReadByte getbyte, void *info, int *error): Opens a
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BDF font, it receives the function that will produce the stream of bytes, the
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user defined void pointer that will be passed to getbyte and a pointer to an
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int that will receive the error code. Returns the BDF font.
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. void BDF_CloseFont(BDF_Font *font): Closes the font and frees all associated
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memory.
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. void BDF_SizeH(BDF_Font *font, char *text, int *x0, int *y0, int *width,
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int *height): Determines the size of the horizontal text, returns the width
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and height of the smallest rectangle that can acomodate the rendered text and
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the start position in x0 and y0 on where the text must be rendered to exactly
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fit the rectangle. This is because the render functions take the y parameter
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as the baseline of the text to allow different fonts (e.g. normal and italic)
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to be mixed in the same line. It handles NULL pointers for pieces of
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information you don't want.
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. void BDF_SizeEntitiesH(BDF_Font *font, char *text, int *x0, int *y0,
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int *width, int *height): Same as above but accepts entities in the
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form &...; (e.g. André)
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. int BDF_DrawH(void *surface, BDF_PutPixel putpixel, BDF_Font *font,
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char *text, int x, int y, unsigned int color): Draws the text at the given
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surface starting at position (x, y). It calls putpixel with the surface,
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coordinates and color to draw the pixel (doesn't clip). Returns the next x
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coordinate to continue to render more text. Only accepts characters in the
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range [0..255].
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. int BDF_DrawEntitiesH(void *, BDF_PutPixel, BDF_Font *, char *, int, int,
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unsigned int): Same as above but accepts entities in the form &...;
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TODO:
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. Handle vertical writing.
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. Use a hash table instead of an ordered array to access the glyphs by name.
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. What else? Tell me: leiradella@bigfoot.com
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