forked from minhngoc25a/freetype2
166 lines
5.2 KiB
C
166 lines
5.2 KiB
C
/***************************************************************************/
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/* */
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/* ftcimage.c */
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/* */
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/* XXX */
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/* */
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/* Copyright 2000 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <cache/ftcimage.h>
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static
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void ftc_done_glyph_image( FTC_Image_Queue queue,
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FTC_ImageNode node )
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{
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FT_UNUSED( queue );
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FT_Done_Glyph( FTC_IMAGENODE_GET_GLYPH( node ) );
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}
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static
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FT_ULong ftc_size_bitmap_image( FTC_Image_Queue queue,
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FTC_ImageNode node )
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{
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FT_Long pitch;
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FT_BitmapGlyph glyph;
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FT_UNUSED( queue );
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glyph = (FT_BitmapGlyph)FTC_IMAGENODE_GET_GLYPH(node);
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pitch = glyph->bitmap.pitch;
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if ( pitch < 0 )
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pitch = -pitch;
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return (FT_ULong)(pitch * glyph->bitmap->rows + sizeof ( *glyph ) );
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}
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static
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FT_ULong ftc_size_outline_image( FTC_Image_Queue queue,
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FTC_ImageNode node )
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{
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FT_Long pitch;
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FT_OutlineGlyph glyph;
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FT_Outline* outline;
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FT_UNUSED( queue );
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glyph = (FT_OutlineGlyph)FTC_IMAGENODE_GET_GLYPH( node );
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outline = &glyph->outline;
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return (FT_ULong)(
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outline->n_points * ( sizeof ( FT_Vector ) + sizeof ( FT_Byte ) ) +
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outline->n_contours * sizeof ( FT_Short ) +
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sizeof( *glyph ) );
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}
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** MONOCHROME BITMAP CALLBACKS *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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static
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FT_Error ftc_init_mono_image( FTC_Image_Queue queue,
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FTC_ImageNode node )
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{
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FT_Face face;
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FT_Size size;
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FT_Error error;
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error = FTC_Manager_Lookup_Size( queue->manager,
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&queue->size_rec,
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&face, &size );
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if ( !error )
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{
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FT_UInt glyph_index = FTC_IMAGENODE_GINDEX( node );
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error = FT_Load_Glyph( face, glyph_index,
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FT_LOAD_RENDER | FT_LOAD_MONOCHROME );
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if ( !error )
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{
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if ( face->glyph->format != ft_image_format_bitmap ||
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face->glyph->bitmap.pixel_mode != ft_pixel_mode_mono )
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{
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/* there is no monochrome glyph for this font! */
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error = FT_Err_Invalid_Glyph_Index;
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}
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else
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{
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/* ok, copy it */
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FT_Glyph glyph;
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error = FT_Get_Glyph( face->glyph, &glyph );
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if ( !error )
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FTC_IMAGENODE_SET_GLYPH( node, glyph );
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}
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}
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}
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return error;
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}
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static
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FT_Error ftc_init_gray_image( FTC_Image_Queue queue,
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FTC_ImageNode node )
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{
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FT_Face face;
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FT_Size size;
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FT_Error error;
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error = FTC_Manager_Lookup_Size( queue->manager,
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&queue->size_rec,
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&face, &size );
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if ( !error )
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{
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FT_UInt glyph_index = FTC_IMAGENODE_GINDEX( node );
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error = FT_Load_Glyph( face, glyph_index,
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FT_LOAD_RENDER );
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if ( !error )
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{
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if ( face->glyph->format != ft_image_format_bitmap ||
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face->glyph->bitmap.pixel_mode != ft_pixel_mode_grays )
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{
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/* there is no monochrome glyph for this font! */
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error = FT_Err_Invalid_Glyph_Index;
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}
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else
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{
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/* ok, copy it */
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FT_Glyph glyph;
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error = FT_Get_Glyph( face->glyph, &glyph );
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if ( !error )
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FTC_IMAGENODE_SET_GLYPH( node, glyph );
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}
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}
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}
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return error;
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}
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/* END */
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