mirror
/
OpenTTD
mirror of https://github.com/OpenTTD/OpenTTD
1
0
Fork 0
Code Issues

(svn r18096) -Fix (r5079/r7158??): Use free type ascender/descender metrics to position font offset correctly.

release/1.0
peter1138 2009-11-15 14:39:37 +00:00
parent f6ec2fa5b9
commit f28d32943d
1 changed files with 21 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
src/fontcache.cpp
View File

@ -36,6 +36,7 @@ static FT_Library _library = NULL;
static FT_Face _face_small = NULL;
static FT_Face _face_medium = NULL;
static FT_Face _face_large = NULL;
static int _ascender[FS_END];
FreeTypeSettings _freetype;
@ -707,6 +708,22 @@ FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) {return FT_Err_
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, const char *str) { return false; }
#endif /* WITH_FONTCONFIG */
static void SetFontGeometry(FT_Face face, FontSize size, int pixels)
{
FT_Set_Pixel_Sizes(face, 0, pixels);
if (FT_IS_SCALABLE(face)) {
int asc = face->ascender * pixels / face->units_per_EM;
int dec = face->descender * pixels / face->units_per_EM;
_ascender[size] = asc;
_font_height[size] = asc - dec;
} else {
_ascender[size] = pixels;
_font_height[size] = pixels;
}
}
/**
* Loads the freetype font.
* First type to load the fontname as if it were a path. If that fails,
@ -781,16 +798,13 @@ void InitFreeType()
/* Set each font size */
if (_face_small != NULL) {
FT_Set_Pixel_Sizes(_face_small, 0, _freetype.small_size);
_font_height[FS_SMALL] = _freetype.small_size;
SetFontGeometry(_face_small, FS_SMALL, _freetype.small_size);
}
if (_face_medium != NULL) {
FT_Set_Pixel_Sizes(_face_medium, 0, _freetype.medium_size);
_font_height[FS_NORMAL] = _freetype.medium_size;
SetFontGeometry(_face_medium, FS_NORMAL, _freetype.medium_size);
}
if (_face_large != NULL) {
FT_Set_Pixel_Sizes(_face_large, 0, _freetype.large_size);
_font_height[FS_LARGE] = _freetype.large_size;
SetFontGeometry(_face_large, FS_LARGE, _freetype.large_size);
}
}
@ -934,7 +948,6 @@ const Sprite *GetGlyph(FontSize size, WChar key)
int height;
int x;
int y;
int y_adj;
assert(IsPrintable(key));
@ -968,9 +981,7 @@ const Sprite *GetGlyph(FontSize size, WChar key)
sprite.width = width;
sprite.height = height;
sprite.x_offs = slot->bitmap_left;
/* XXX 2 should be determined somehow... it's right for the normal face */
y_adj = (size == FS_NORMAL) ? 2 : 0;
sprite.y_offs = GetCharacterHeight(size) - slot->bitmap_top - y_adj;
sprite.y_offs = _ascender[size] - slot->bitmap_top;
/* Draw shadow for medium size */
if (size == FS_NORMAL) {