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[util] List supported output formats in hb-view

This commit is contained in:
Behdad Esfahbod 2012-12-21 16:35:28 -05:00
parent 6bad092aa8
commit f95a87b7b8
2 changed files with 29 additions and 2 deletions
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1
TODO
View File

@ -71,7 +71,6 @@ API additions
hb-view / hb-shape enhancements:
===============================
- --output-format should list available formats.
- Add --width, --height, --auto-size, --align, etc?
- --features="init=medi=isol=fina=0"

30
util/helper-cairo.cc
View File

@ -246,6 +246,25 @@ stdio_write_func (void *closure,
return CAIRO_STATUS_SUCCESS;
}
static const char helper_cairo_supported_formats[] =
"ansi"
#ifdef CAIRO_HAS_PNG_FUNCTIONS
"/png"
#endif
#ifdef CAIRO_HAS_SVG_SURFACE
"/svg"
#endif
#ifdef CAIRO_HAS_PDF_SURFACE
"/pdf"
#endif
#ifdef CAIRO_HAS_PS_SURFACE
"/ps"
#ifdef HAS_EPS
"/eps"
#endif
#endif
;
cairo_t *
helper_cairo_create_context (double w, double h,
view_options_t *view_opts,
@ -268,7 +287,13 @@ helper_cairo_create_context (double w, double h,
extension = "ansi";
else
#endif
{
#ifdef CAIRO_HAS_PNG_FUNCTIONS
extension = "png";
#else
extension = "ansi";
#endif
}
}
if (0)
;
@ -317,7 +342,10 @@ helper_cairo_create_context (double w, double h,
else if (constructor2)
surface = constructor2 (stdio_write_func, f, w, h, content);
else
fail (false, "Unknown output format `%s'", extension);
fail (false, "Unknown output format `%s'; supported formats are: %s%s",
extension, helper_cairo_supported_formats,
out_opts->explicit_output_format ? "" :
"\nTry setting format using --output-format");
cairo_t *cr = cairo_create (surface);
content = cairo_surface_get_content (surface);