added glyph zone objects
This commit is contained in:
David Turner
parent
4ea18e5573
commit
cbfaedcefa
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@ -2409,46 +2409,50 @@
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FT_Error FT_Get_Outline_CBox( FT_Outline* outline,
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FT_BBox* cbox )
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{
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FT_Pos xMin, yMin, xMax, yMax;
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if ( outline && cbox )
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{
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if ( outline->n_points == 0 )
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{
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cbox->xMin = 0;
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cbox->yMin = 0;
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cbox->xMax = 0;
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cbox->yMax = 0;
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xMin = 0;
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yMin = 0;
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xMax = 0;
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yMax = 0;
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}
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else
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{
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FT_UShort k;
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FT_Vector* vec = outline->points;
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FT_Vector* vec = outline->points;
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FT_Vector* limit = vec + outline->n_points;
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cbox->xMin = cbox->xMax = vec->x;
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cbox->yMin = cbox->yMax = vec->y;
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xMin = xMax = vec->x;
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yMin = yMax = vec->y;
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vec++;
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for ( k = 1; k < outline->n_points; k++ )
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for ( ; vec < limit; vec++ )
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{
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FT_Pos x, y;
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x = vec->x;
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if ( x < cbox->xMin ) cbox->xMin = x;
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if ( x > cbox->xMax ) cbox->xMax = x;
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if ( x < xMin ) xMin = x;
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if ( x > xMax ) xMax = x;
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y = vec->y;
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if ( y < cbox->yMin ) cbox->yMin = y;
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if ( y > cbox->yMax ) cbox->yMax = y;
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vec++;
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if ( y < yMin ) yMin = y;
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if ( y > yMax ) yMax = y;
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}
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}
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cbox->xMin = xMin;
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cbox->xMax = xMax;
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cbox->yMin = yMin;
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cbox->yMax = yMax;
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return FT_Err_Ok;
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}
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else
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return FT_Err_Invalid_Argument;
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}
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/*************************************************************************/
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/* */
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@ -2474,7 +2478,6 @@
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FT_UShort n;
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FT_Vector* vec = outline->points;
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for ( n = 0; n < outline->n_points; n++ )
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{
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vec->x += xOffset;
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@ -2484,6 +2487,130 @@
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Done_GlyphZone */
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/* */
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/* <Description> */
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/* Deallocates a glyph zone. */
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/* */
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/* <Input> */
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/* zone :: pointer to the target glyph zone. */
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/* */
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BASE_FUNC
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void FT_Done_GlyphZone( FT_GlyphZone* zone )
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{
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FT_Memory memory = zone->memory;
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FREE( zone->contours );
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FREE( zone->flags );
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FREE( zone->cur );
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FREE( zone->org );
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zone->max_points = zone->n_points = 0;
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zone->max_contours = zone->n_contours = 0;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_New_GlyphZone */
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/* */
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/* <Description> */
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/* Allocates a new glyph zone. */
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/* */
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/* <Input> */
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/* memory :: A handle to the current memory object. */
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/* */
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/* maxPoints :: The capacity of glyph zone in points. */
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/* */
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/* maxContours :: The capacity of glyph zone in contours. */
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/* */
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/* <Output> */
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/* zone :: A pointer to the target glyph zone record. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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BASE_FUNC
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FT_Error FT_New_GlyphZone( FT_Memory memory,
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FT_UShort maxPoints,
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FT_Short maxContours,
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FT_GlyphZone* zone )
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{
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FT_Error error;
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if (maxPoints > 0)
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maxPoints += 2;
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MEM_Set( zone, 0, sizeof(*zone) );
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zone->memory = memory;
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if ( ALLOC_ARRAY( zone->org, maxPoints*2, FT_F26Dot6 ) ||
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ALLOC_ARRAY( zone->cur, maxPoints*2, FT_F26Dot6 ) ||
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ALLOC_ARRAY( zone->flags, maxPoints, FT_Byte ) ||
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ALLOC_ARRAY( zone->contours, maxContours, FT_UShort ) )
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{
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FT_Done_GlyphZone(zone);
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}
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return error;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Update_GlyphZone */
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/* */
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/* <Description> */
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/* Checks the size of a zone and reallocates it if necessary. */
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/* */
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/* <Input> */
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/* newPoints :: The new capacity for points. We add two slots for */
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/* phantom points. */
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/* */
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/* newContours :: The new capacity for contours. */
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/* */
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/* <InOut> */
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/* zone :: The address of the target zone. */
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/* */
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/* maxPoints :: The address of the zone's current capacity for */
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/* points. */
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/* */
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/* maxContours :: The address of the zone's current capacity for */
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/* contours. */
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/* */
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BASE_FUNC
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FT_Error FT_Update_GlyphZone( FT_GlyphZone* zone,
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FT_UShort newPoints,
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FT_Short newContours )
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{
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FT_Error error = FT_Err_Ok;
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FT_Memory memory = zone->memory;
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newPoints += 2;
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if ( zone->max_points < newPoints )
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{
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/* reallocate the points arrays */
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if ( REALLOC_ARRAY( zone->org, zone->max_points*2, newPoints*2, FT_F26Dot6 ) ||
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REALLOC_ARRAY( zone->cur, zone->max_points*2, newPoints*2, FT_F26Dot6 ) ||
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REALLOC_ARRAY( zone->flags, zone->max_points*2, newPoints, FT_Byte ) )
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goto Exit;
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zone->max_points = newPoints;
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}
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if ( zone->max_contours < newContours )
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{
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/* reallocate the contours array */
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if ( REALLOC_ARRAY( zone->contours, zone->max_contours, newContours, FT_UShort ) )
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goto Exit;
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zone->max_contours = newContours;
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}
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Exit:
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return error;
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}
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@ -319,6 +319,59 @@
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#ifdef FT_CONFIG_OPTION_ALTERNATE_GLYPH_FORMATS
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/************************************************************************
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*
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* <Struct>
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* FT_GlyphZone
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*
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* <Description>
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* A glyph zone is used to load, scale and hint glyph outline
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* coordinates.
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*
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* <Fields>
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* memory :: handle to memory manager
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* max_points :: max size in points of zone
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* max_contours :: max size in contours of zone
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* n_points :: current number of points in zone
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* n_contours :: current number of contours in zone
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* org :: original glyph coordinates (font units/scaled)
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* cur :: current glyph coordinates (scaled/hinted)
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* flags :: point control flags
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* contours :: contour end points
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*
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***********************************************************************/
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typedef struct FT_GlyphZone_
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{
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FT_Memory memory;
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FT_UShort max_points;
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FT_UShort max_contours;
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FT_UShort n_points; /* number of points in zone */
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FT_Short n_contours; /* number of contours */
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FT_Vector* org; /* original point coordinates */
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FT_Vector* cur; /* current point coordinates */
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FT_Byte* flags; /* current touch flags */
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FT_UShort* contours; /* contour end points */
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} FT_GlyphZone;
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BASE_DEF
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FT_Error FT_New_GlyphZone( FT_Memory memory,
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FT_UShort maxPoints,
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FT_Short maxContours,
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FT_GlyphZone* zone );
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BASE_DEF
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void FT_Done_GlyphZone( FT_GlyphZone* zone );
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BASE_DEF
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FT_Error FT_Update_GlyphZone( FT_GlyphZone* zone,
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FT_UShort num_points,
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FT_Short num_contours );
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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