s/FT_PALETTE_USABLE_WITH_/FT_PALETTE_FOR_/.

* include/freetype/ftcolor.h, include/freetype/internal/sfnt.h,
src/sfnt/ttcolr.c: Do it.

ChangeLog

@@ -1,3 +1,10 @@
+2018-06-21  Werner Lemberg  <wl@gnu.org>
+
+	s/FT_PALETTE_USABLE_WITH_/FT_PALETTE_FOR_/.
+
+	* include/freetype/ftcolor.h, include/freetype/internal/sfnt.h,
+	src/sfnt/ttcolr.c: Do it.
+
 2018-06-19  Werner Lemberg  <wl@gnu.org>
 
 	[sfnt] Fix CPAL heap buffer overflow.

include/freetype/ftcolor.h

@@ -97,19 +97,19 @@ FT_BEGIN_HEADER
    *   palette with a given index is usable.
    *
    * @values:
-   *   FT_PALETTE_USABLE_WITH_LIGHT_BACKGROUND ::
+   *   FT_PALETTE_FOR_LIGHT_BACKGROUND ::
    *     The palette is appropriate to use when displaying the font on a
    *     light background such as white.
    *
-   *   FT_PALETTE_USABLE_WITH_DARK_BACKGROUND ::
+   *   FT_PALETTE_FOR_DARK_BACKGROUND ::
    *     The palette is appropriate to use when displaying the font on a
    *     dark background such as black.
    *
    * @since:
    *   2.10
    */
-#define FT_PALETTE_USABLE_WITH_LIGHT_BACKGROUND  0x01
-#define FT_PALETTE_USABLE_WITH_DARK_BACKGROUND   0x02
+#define FT_PALETTE_FOR_LIGHT_BACKGROUND  0x01
+#define FT_PALETTE_FOR_DARK_BACKGROUND   0x02
 
 
   /**************************************************************************
@@ -137,8 +137,8 @@ FT_BEGIN_HEADER
    *   palette_types ::
    *     A read-only array of palette types with `num_palettes' elements.
    *     Possible values are an ORed combination of
-   *     @FT_PALETTE_USABLE_WITH_LIGHT_BACKGROUND and
-   *     @FT_PALETTE_USABLE_WITH_DARK_BACKGROUND.
+   *     @FT_PALETTE_FOR_LIGHT_BACKGROUND and
+   *     @FT_PALETTE_FOR_DARK_BACKGROUND.
    *
    *     NULL if the font's `CPAL' table doesn't contain appropriate data.
    *
@@ -289,7 +289,7 @@ FT_BEGIN_HEADER
    * @note:
    *   If this function isn't called, the text foreground color is set to
    *   white opaque (BGRA value 0xFFFFFFFF) if
-   *   @FT_PALETTE_USABLE_WITH_DARK_BACKGROUND is present for the current
+   *   @FT_PALETTE_FOR_DARK_BACKGROUND is present for the current
    *   palette, and black opaque (BGRA value 0x000000FF) otherwise,
    *   including the case that no palette types are available in the `CPAL'
    *   table.

include/freetype/internal/sfnt.h

@@ -542,9 +542,8 @@ FT_BEGIN_HEADER
    *   specified by `color_index'.  If `color_index' is 0xFFFF, use
    *   `face->foreground_color' if `face->have_foreground_color' is set.
    *   Otherwise check `face->palette_data.palette_type': If present and
-   *   @FT_PALETTE_USABLE_WITH_DARK_BACKGROUND is set, use BGRA value
-   *   0xFFFFFFFF (white opaque).  Otherwise use BGRA value 0x000000FF
-   *   (black opaque).
+   *   @FT_PALETTE_FOR_DARK_BACKGROUND is set, use BGRA value 0xFFFFFFFF
+   *   (white opaque).  Otherwise use BGRA value 0x000000FF (black opaque).
    *
    * @input:
    *   face ::

src/sfnt/ttcolr.c

@@ -377,7 +377,7 @@
       {
         if ( face->palette_data.palette_types                          &&
              ( face->palette_data.palette_types[face->palette_index] &
-                 FT_PALETTE_USABLE_WITH_DARK_BACKGROUND              ) )
+                 FT_PALETTE_FOR_DARK_BACKGROUND                      ) )
         {
           /* white opaque */
           b     = 0xFF;