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fix older FreeType versions support

This commit is contained in:
Vadim Lopatin 2015-11-11 10:08:53 +03:00
parent 3f4fa96cb7
commit 1526901157
1 changed files with 12 additions and 0 deletions
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12
src/dlangui/graphics/ftfonts.d
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@ -461,6 +461,17 @@ class FreeTypeFont : Font {
@property override bool isNull() { return _files.length == 0; }
}
private derelict.util.exception.ShouldThrow missingSymFunc( string symName ) {
import std.algorithm : equal;
foreach(s; ["FT_New_Face", "FT_Attach_File", "FT_Set_Pixel_Sizes",
"FT_Get_Char_Index", "FT_Load_Glyph", "FT_Done_Face",
"FT_Init_FreeType", "FT_Done_FreeType"]) {
if (symName.equal(s)) // Symbol is used
return derelict.util.exception.ShouldThrow.Yes;
}
// Don't throw for unused symbol
return derelict.util.exception.ShouldThrow.No;
}
/// FreeType based font manager.
class FreeTypeFontManager : FontManager {
@ -513,6 +524,7 @@ class FreeTypeFontManager : FontManager {
this() {
// load dynaic library
try {
DerelictFT.missingSymbolCallback = &missingSymFunc;
DerelictFT.load();
} catch (Exception e) {
Log.e("Derelict: cannot load freetype shared library: ", e.msg);