Add new cairo_user_scaled_font_get_foreground_source() function

The previous approach using foreground colors in user fonts does not
work for gradients since the foreground color is not available at the
time of recording.

Add a new function cairo_user_scaled_font_get_foreground_source() that
can be called by the color render function to retrieve the foreground
pattern. Calling this function signals to cairo that the foreground
color is used. In this case cairo will call the render function
whenever the foreground color has changed.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/cairo-scaled-font-private.h b/src/cairo-scaled-font-private.h
index bcc13bdc8..8c10b60c7 100644
--- a/src/cairo-scaled-font-private.h
+++ b/src/cairo-scaled-font-private.h
@@ -149,8 +149,12 @@ struct _cairo_scaled_glyph {
     cairo_list_t            dev_privates;
 
     cairo_color_t           foreground_color;   /* only used for color glyphs */
+
+    /* TRUE if the recording_surface required the foreground_color to render. */
+    unsigned                recording_uses_foreground_color : 1;
+
     /* TRUE if the color_surface required the foreground_color to render. */
-    unsigned                uses_foreground_color : 1;
+    unsigned                image_uses_foreground_color : 1;
 
     /* TRUE if color_glyph specifies if glyph is color or non color, FALSE if glyph color type unknown. */
     unsigned                color_glyph_set : 1;