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font: log freetype errors

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This commit is contained in:
Daniel Eklöf 2019-11-30 12:35:07 +01:00
parent a87b39f6eb
commit 62a239bcd1
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GPG key ID: 5BBD4992C116573F
1 changed files with 19 additions and 3 deletions
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22
font.c
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@ -48,6 +48,17 @@ fini(void)
FcFini(); FcFini();
} }
static const char *
ft_error_string(FT_Error err)
{
#undef FTERRORS_H_
#undef __FTERRORS_H__
#define FT_ERRORDEF( e, v, s ) case e: return s;
#define FT_ERROR_START_LIST switch (err) {
#define FT_ERROR_END_LIST }
#include FT_ERRORS_H
return "unknown error";
}
static void static void
underline_strikeout_metrics(struct font *font) underline_strikeout_metrics(struct font *font)
{ {
@ -441,8 +452,10 @@ glyph_for_wchar(const struct font *font, wchar_t wc, struct glyph *glyph)
* (FT_CONFIG_OPTION_SUBPIXEL_RENDERING must be defined, and isn't * (FT_CONFIG_OPTION_SUBPIXEL_RENDERING must be defined, and isn't
* by default) */ * by default) */
FT_Error err = FT_Library_SetLcdFilter(ft_lib, font->lcd_filter); FT_Error err = FT_Library_SetLcdFilter(ft_lib, font->lcd_filter);
if (err != 0 && err != FT_Err_Unimplemented_Feature) if (err != 0 && err != FT_Err_Unimplemented_Feature) {
LOG_ERR("failed to set LCD filter: %s", ft_error_string(err));
goto err; goto err;
}
FT_UInt idx = FT_Get_Char_Index(font->face, wc); FT_UInt idx = FT_Get_Char_Index(font->face, wc);
if (idx == 0) { if (idx == 0) {
@ -504,13 +517,16 @@ glyph_for_wchar(const struct font *font, wchar_t wc, struct glyph *glyph)
err = FT_Load_Glyph(font->face, idx, font->load_flags); err = FT_Load_Glyph(font->face, idx, font->load_flags);
if (err != 0) { if (err != 0) {
LOG_ERR("load failed"); LOG_ERR("%s: failed to load glyph #%d: %s",
font->name, idx, ft_error_string(err));
goto err; goto err;
} }
err = FT_Render_Glyph(font->face->glyph, font->render_flags); err = FT_Render_Glyph(font->face->glyph, font->render_flags);
if (err != 0) if (err != 0) {
LOG_ERR("%s: failed to render glyph: %s", font->name, ft_error_string(err));
goto err; goto err;
}
assert(font->face->glyph->format == FT_GLYPH_FORMAT_BITMAP); assert(font->face->glyph->format == FT_GLYPH_FORMAT_BITMAP);