Make `FT_Get_Color_Glyph_Layer' return FT_Bool.
* include/freetype/freetype.h, src/base/ftobjs.c (FT_Get_Color_Glyph_Layer, FT_Render_Glyph_Internal): Updated. * include/freetype/internal/sfnt.h (TT_Get_Colr_Layer_Func), src/sfnt/ttcolr.h, src/sfnt/ttcolr.c (tt_face_get_colr_layer): Updated.
This commit is contained in:
Werner Lemberg
parent
f6ccb524af
commit
4e3b2473d8
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2018-07-02 Werner Lemberg <wl@gnu.org>
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Make `FT_Get_Color_Glyph_Layer' return FT_Bool.
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* include/freetype/freetype.h, src/base/ftobjs.c
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(FT_Get_Color_Glyph_Layer, FT_Render_Glyph_Internal): Updated.
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* include/freetype/internal/sfnt.h (TT_Get_Colr_Layer_Func),
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src/sfnt/ttcolr.h, src/sfnt/ttcolr.c (tt_face_get_colr_layer):
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Updated.
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2018-07-01 Werner Lemberg <wl@gnu.org>
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* src/base/ftobjs.c (FT_Get_Color_Glyph_Layer): Guard SFNT function.
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@ -4255,6 +4255,9 @@ FT_BEGIN_HEADER
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* same object again.
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*
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* @output:
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* aglyph_index ::
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* The glyph index of the current layer.
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*
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* acolor_index ::
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* The color index into the font face's color palette of the current
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* layer. The value 0xFFFF is special; it doesn't reference a palette
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@ -4264,9 +4267,9 @@ FT_BEGIN_HEADER
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* The color palette can be retrieved with @FT_Palette_Select.
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*
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* @return:
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* The glyph index of the current layer. If there are no more layers
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* (or if there are no layers at all), value~0 gets returned. In case
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* of an error, value~0 is returned also.
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* Value~1 if everything is OK. If there are no more layers (or if
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* there are no layers at all), value~0 gets returned. In case of an
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* error, value~0 is returned also.
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*
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* @note:
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* This function is necessary if you want to handle glyph layers by
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@ -4282,6 +4285,7 @@ FT_BEGIN_HEADER
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* FT_Color* palette;
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* FT_LayerIterator iterator;
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*
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* FT_Bool have_layers;
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* FT_UInt layer_glyph_index;
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* FT_UInt layer_color_index;
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*
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@ -4290,33 +4294,41 @@ FT_BEGIN_HEADER
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* if ( error )
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* palette = NULL;
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*
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* iterator.p = NULL;
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* layer_glyph_index = FT_Get_Color_Glyph_Layer( face,
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* glyph_index,
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* &layer_color_index,
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* &iterator );
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* iterator.p = NULL;
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* have_layers = FT_Get_Color_Glyph_Layer( face,
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* glyph_index,
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* &layer_glyph_index,
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* &layer_color_index,
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* &iterator );
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*
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* if ( palette && layer_glyph_index )
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* if ( palette && have_layers )
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* {
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* do
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* {
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* FT_Color layer_color = palette[layer_color_index];
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* FT_Color layer_color;
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*
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*
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* if ( layer_color_index == 0xFFFF )
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* layer_color = text_foreground_color;
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* else
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* layer_color = palette[layer_color_index];
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*
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* // Load and render glyph `layer_glyph_index', then
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* // blend resulting pixmap with previously created pixmaps.
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* // blend resulting pixmap (using color `layer_color')
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* // with previously created pixmaps.
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*
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* } while ( ( layer_glyph_index =
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* FT_Get_Color_Glyph_Layer( face,
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* glyph_index,
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* &layer_color_index,
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* &iterator ) ) != 0 );
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* } while ( FT_Get_Color_Glyph_Layer( face,
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* glyph_index,
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* &layer_glyph_index,
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* &layer_color_index,
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* &iterator ) );
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* }
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* }
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*/
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FT_EXPORT( FT_UInt )
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FT_EXPORT( FT_Bool )
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FT_Get_Color_Glyph_Layer( FT_Face face,
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FT_UInt base_glyph,
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FT_UInt *aglyph_index,
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FT_UInt *acolor_index,
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FT_LayerIterator* iterator );
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@ -514,6 +514,9 @@ FT_BEGIN_HEADER
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* same object again.
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*
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* @output:
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* aglyph_index ::
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* The glyph index of the current layer.
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*
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* acolor_index ::
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* The color index into the font face's color palette of the current
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* layer. The value 0xFFFF is special; it doesn't reference a palette
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@ -521,13 +524,14 @@ FT_BEGIN_HEADER
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* instead (to be set up by the application outside of FreeType).
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*
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* @return:
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* The glyph index of the current layer. If there are no more layers
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* (or if there are no layers at all), value~0 gets returned. In case
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* of an error, value~0 is returned also.
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* Value~1 if everything is OK. If there are no more layers (or if
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* there are no layers at all), value~0 gets returned. In case of an
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* error, value~0 is returned also.
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*/
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typedef FT_UInt
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typedef FT_Bool
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(*TT_Get_Colr_Layer_Func)( TT_Face face,
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FT_UInt base_glyph,
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FT_UInt *aglyph_index,
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FT_UInt *acolor_index,
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FT_LayerIterator* iterator );
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@ -4517,17 +4517,19 @@
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FT_UInt base_glyph = slot->glyph_index;
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FT_Bool have_layers;
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FT_UInt glyph_index;
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FT_UInt color_index;
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/* check whether we have colored glyph layers */
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iterator.p = NULL;
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glyph_index = FT_Get_Color_Glyph_Layer( face,
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have_layers = FT_Get_Color_Glyph_Layer( face,
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base_glyph,
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&glyph_index,
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&color_index,
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&iterator );
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if ( glyph_index )
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if ( have_layers )
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{
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error = FT_New_GlyphSlot( face, NULL );
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if ( !error )
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@ -4546,7 +4548,7 @@
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load_flags &= ~FT_LOAD_COLOR;
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/* render into the new `face->glyph' glyph slot */
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load_flags |= FT_LOAD_RENDER;
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load_flags |= FT_LOAD_RENDER;
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error = FT_Load_Glyph( face, glyph_index, load_flags );
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if ( error )
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@ -4561,11 +4563,11 @@
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if ( error )
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break;
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} while ( ( glyph_index =
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FT_Get_Color_Glyph_Layer( face,
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base_glyph,
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&color_index,
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&iterator ) ) != 0 );
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} while ( FT_Get_Color_Glyph_Layer( face,
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base_glyph,
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&glyph_index,
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&color_index,
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&iterator ) );
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if ( !error )
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slot->format = FT_GLYPH_FORMAT_BITMAP;
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@ -5471,9 +5473,10 @@
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/* documentation is in freetype.h */
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FT_EXPORT_DEF( FT_UInt )
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FT_EXPORT_DEF( FT_Bool )
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FT_Get_Color_Glyph_Layer( FT_Face face,
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FT_UInt base_glyph,
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FT_UInt *aglyph_index,
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FT_UInt *acolor_index,
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FT_LayerIterator* iterator )
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{
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@ -5482,6 +5485,7 @@
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if ( !face ||
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!aglyph_index ||
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!acolor_index ||
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!iterator ||
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base_glyph >= (FT_UInt)face->num_glyphs )
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@ -5496,14 +5500,11 @@
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if ( sfnt->get_colr_layer )
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return sfnt->get_colr_layer( ttface,
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base_glyph,
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aglyph_index,
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acolor_index,
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iterator );
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else
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{
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*acolor_index = 0;
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return 0;
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}
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}
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@ -209,15 +209,15 @@
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}
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FT_LOCAL_DEF( FT_UInt )
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FT_LOCAL_DEF( FT_Bool )
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tt_face_get_colr_layer( TT_Face face,
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FT_UInt base_glyph,
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FT_UInt *aglyph_index,
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FT_UInt *acolor_index,
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FT_LayerIterator* iterator )
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{
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Colr* colr = (Colr*)face->colr;
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Colr* colr = (Colr*)face->colr;
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BaseGlyphRecord glyph_record;
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FT_UInt glyph_index;
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if ( !colr )
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@ -252,17 +252,17 @@
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if ( iterator->layer >= iterator->num_layers )
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return 0;
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glyph_index = FT_NEXT_USHORT( iterator->p );
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*aglyph_index = FT_NEXT_USHORT( iterator->p );
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*acolor_index = FT_NEXT_USHORT( iterator->p );
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if ( glyph_index >= FT_FACE( face )->num_glyphs ||
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if ( *aglyph_index >= FT_FACE( face )->num_glyphs ||
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( *acolor_index != 0xFFFF &&
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*acolor_index >= face->palette_data.num_palette_entries ) )
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return 0;
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iterator->layer++;
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return glyph_index;
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return 1;
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}
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@ -36,9 +36,10 @@ FT_BEGIN_HEADER
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FT_LOCAL( void )
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tt_face_free_colr( TT_Face face );
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FT_LOCAL( FT_UInt )
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FT_LOCAL( FT_Bool )
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tt_face_get_colr_layer( TT_Face face,
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FT_UInt base_glyph,
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FT_UInt *aglyph_index,
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FT_UInt *acolor_index,
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FT_LayerIterator* iterator );
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