Index: core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2font.c |
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2font.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2font.c |
deleted file mode 100644 |
index 479d9125d150d948815227784621aa49d57a7b4d..0000000000000000000000000000000000000000 |
--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2font.c |
+++ /dev/null |
@@ -1,403 +0,0 @@ |
-/***************************************************************************/ |
-/* */ |
-/* cf2font.c */ |
-/* */ |
-/* Adobe's code for font instances (body). */ |
-/* */ |
-/* Copyright 2007-2013 Adobe Systems Incorporated. */ |
-/* */ |
-/* This software, and all works of authorship, whether in source or */ |
-/* object code form as indicated by the copyright notice(s) included */ |
-/* herein (collectively, the "Work") is made available, and may only be */ |
-/* used, modified, and distributed under the FreeType Project License, */ |
-/* LICENSE.TXT. Additionally, subject to the terms and conditions of the */ |
-/* FreeType Project License, each contributor to the Work hereby grants */ |
-/* to any individual or legal entity exercising permissions granted by */ |
-/* the FreeType Project License and this section (hereafter, "You" or */ |
-/* "Your") a perpetual, worldwide, non-exclusive, no-charge, */ |
-/* royalty-free, irrevocable (except as stated in this section) patent */ |
-/* license to make, have made, use, offer to sell, sell, import, and */ |
-/* otherwise transfer the Work, where such license applies only to those */ |
-/* patent claims licensable by such contributor that are necessarily */ |
-/* infringed by their contribution(s) alone or by combination of their */ |
-/* contribution(s) with the Work to which such contribution(s) was */ |
-/* submitted. If You institute patent litigation against any entity */ |
-/* (including a cross-claim or counterclaim in a lawsuit) alleging that */ |
-/* the Work or a contribution incorporated within the Work constitutes */ |
-/* direct or contributory patent infringement, then any patent licenses */ |
-/* granted to You under this License for that Work shall terminate as of */ |
-/* the date such litigation is filed. */ |
-/* */ |
-/* By using, modifying, or distributing the Work you indicate that you */ |
-/* have read and understood the terms and conditions of the */ |
-/* FreeType Project License as well as those provided in this section, */ |
-/* and you accept them fully. */ |
-/* */ |
-/***************************************************************************/ |
- |
- |
-#include "cf2ft.h" |
- |
-#include "cf2glue.h" |
-#include "cf2font.h" |
-#include "cf2error.h" |
-#include "cf2intrp.h" |
- |
- |
- /* Compute a stem darkening amount in character space. */ |
- static void |
- cf2_computeDarkening( CF2_Fixed emRatio, |
- CF2_Fixed ppem, |
- CF2_Fixed stemWidth, |
- CF2_Fixed* darkenAmount, |
- CF2_Fixed boldenAmount, |
- FT_Bool stemDarkened ) |
- { |
- /* Internal calculations are done in units per thousand for */ |
- /* convenience. */ |
- CF2_Fixed stemWidthPer1000, scaledStem; |
- |
- |
- *darkenAmount = 0; |
- |
- if ( boldenAmount == 0 && !stemDarkened ) |
- return; |
- |
- /* protect against range problems and divide by zero */ |
- if ( emRatio < cf2_floatToFixed( .01 ) ) |
- return; |
- |
- if ( stemDarkened ) |
- { |
- /* convert from true character space to 1000 unit character space; */ |
- /* add synthetic emboldening effect */ |
- |
- /* we have to assure that the computation of `scaledStem' */ |
- /* and `stemWidthPer1000' don't overflow */ |
- |
- stemWidthPer1000 = FT_MulFix( stemWidth + boldenAmount, emRatio ); |
- |
- if ( emRatio > CF2_FIXED_ONE && |
- stemWidthPer1000 <= ( stemWidth + boldenAmount ) ) |
- { |
- stemWidthPer1000 = 0; /* to pacify compiler */ |
- scaledStem = cf2_intToFixed( 2333 ); |
- } |
- else |
- { |
- scaledStem = FT_MulFix( stemWidthPer1000, ppem ); |
- |
- if ( ppem > CF2_FIXED_ONE && |
- scaledStem <= stemWidthPer1000 ) |
- scaledStem = cf2_intToFixed( 2333 ); |
- } |
- |
- /* |
- * Total darkening amount is computed in 1000 unit character space |
- * using the modified 5 part curve as Avalon rasterizer. |
- * The darkening amount is smaller for thicker stems. |
- * It becomes zero when the stem is thicker than 2.333 pixels. |
- * |
- * In Avalon rasterizer, |
- * |
- * darkenAmount = 0.5 pixels if scaledStem <= 0.5 pixels, |
- * darkenAmount = 0.333 pixels if 1 <= scaledStem <= 1.667 pixels, |
- * darkenAmount = 0 pixel if scaledStem >= 2.333 pixels, |
- * |
- * and piecewise linear in-between. |
- * |
- */ |
- if ( scaledStem < cf2_intToFixed( 500 ) ) |
- *darkenAmount = FT_DivFix( cf2_intToFixed( 400 ), ppem ); |
- |
- else if ( scaledStem < cf2_intToFixed( 1000 ) ) |
- *darkenAmount = FT_DivFix( cf2_intToFixed( 525 ), ppem ) - |
- FT_MulFix( stemWidthPer1000, |
- cf2_floatToFixed( .25 ) ); |
- |
- else if ( scaledStem < cf2_intToFixed( 1667 ) ) |
- *darkenAmount = FT_DivFix( cf2_intToFixed( 275 ), ppem ); |
- |
- else if ( scaledStem < cf2_intToFixed( 2333 ) ) |
- *darkenAmount = FT_DivFix( cf2_intToFixed( 963 ), ppem ) - |
- FT_MulFix( stemWidthPer1000, |
- cf2_floatToFixed( .413 ) ); |
- |
- /* use half the amount on each side and convert back to true */ |
- /* character space */ |
- *darkenAmount = FT_DivFix( *darkenAmount, 2 * emRatio ); |
- } |
- |
- /* add synthetic emboldening effect in character space */ |
- *darkenAmount += boldenAmount / 2; |
- } |
- |
- |
- /* set up values for the current FontDict and matrix */ |
- |
- /* caller's transform is adjusted for subpixel positioning */ |
- static void |
- cf2_font_setup( CF2_Font font, |
- const CF2_Matrix* transform ) |
- { |
- /* pointer to parsed font object */ |
- CFF_Decoder* decoder = font->decoder; |
- |
- FT_Bool needExtraSetup; |
- |
- /* character space units */ |
- CF2_Fixed boldenX = font->syntheticEmboldeningAmountX; |
- CF2_Fixed boldenY = font->syntheticEmboldeningAmountY; |
- |
- CF2_Fixed ppem; |
- |
- |
- /* clear previous error */ |
- font->error = FT_Err_Ok; |
- |
- /* if a CID fontDict has changed, we need to recompute some cached */ |
- /* data */ |
- needExtraSetup = |
- (FT_Bool)( font->lastSubfont != cf2_getSubfont( decoder ) ); |
- |
- /* if ppem has changed, we need to recompute some cached data */ |
- /* note: because of CID font matrix concatenation, ppem and transform */ |
- /* do not necessarily track. */ |
- ppem = cf2_getPpemY( decoder ); |
- if ( font->ppem != ppem ) |
- { |
- font->ppem = ppem; |
- needExtraSetup = TRUE; |
- } |
- |
- /* copy hinted flag on each call */ |
- font->hinted = (FT_Bool)( font->renderingFlags & CF2_FlagsHinted ); |
- |
- /* determine if transform has changed; */ |
- /* include Fontmatrix but ignore translation */ |
- if ( ft_memcmp( transform, |
- &font->currentTransform, |
- 4 * sizeof ( CF2_Fixed ) ) != 0 ) |
- { |
- /* save `key' information for `cache of one' matrix data; */ |
- /* save client transform, without the translation */ |
- font->currentTransform = *transform; |
- font->currentTransform.tx = |
- font->currentTransform.ty = cf2_intToFixed( 0 ); |
- |
- /* TODO: FreeType transform is simple scalar; for now, use identity */ |
- /* for outer */ |
- font->innerTransform = *transform; |
- font->outerTransform.a = |
- font->outerTransform.d = cf2_intToFixed( 1 ); |
- font->outerTransform.b = |
- font->outerTransform.c = cf2_intToFixed( 0 ); |
- |
- needExtraSetup = TRUE; |
- } |
- |
- /* |
- * font->darkened is set to true if there is a stem darkening request or |
- * the font is synthetic emboldened. |
- * font->darkened controls whether to adjust blue zones, winding order, |
- * and hinting. |
- * |
- */ |
- if ( font->stemDarkened != ( font->renderingFlags & CF2_FlagsDarkened ) ) |
- { |
- font->stemDarkened = |
- (FT_Bool)( font->renderingFlags & CF2_FlagsDarkened ); |
- |
- /* blue zones depend on darkened flag */ |
- needExtraSetup = TRUE; |
- } |
- |
- /* recompute variables that are dependent on transform or FontDict or */ |
- /* darken flag */ |
- if ( needExtraSetup ) |
- { |
- /* StdVW is found in the private dictionary; */ |
- /* recompute darkening amounts whenever private dictionary or */ |
- /* transform change */ |
- /* Note: a rendering flag turns darkening on or off, so we want to */ |
- /* store the `on' amounts; */ |
- /* darkening amount is computed in character space */ |
- /* TODO: testing size-dependent darkening here; */ |
- /* what to do for rotations? */ |
- |
- CF2_Fixed emRatio; |
- CF2_Fixed stdHW; |
- CF2_Int unitsPerEm = font->unitsPerEm; |
- |
- |
- if ( unitsPerEm == 0 ) |
- unitsPerEm = 1000; |
- |
- ppem = FT_MAX( cf2_intToFixed( 4 ), |
- font->ppem ); /* use minimum ppem of 4 */ |
- |
-#if 0 |
- /* since vstem is measured in the x-direction, we use the `a' member */ |
- /* of the fontMatrix */ |
- emRatio = cf2_fixedFracMul( cf2_intToFixed( 1000 ), fontMatrix->a ); |
-#endif |
- |
- /* Freetype does not preserve the fontMatrix when parsing; use */ |
- /* unitsPerEm instead. */ |
- /* TODO: check precision of this */ |
- emRatio = cf2_intToFixed( 1000 ) / unitsPerEm; |
- font->stdVW = cf2_getStdVW( decoder ); |
- |
- if ( font->stdVW <= 0 ) |
- font->stdVW = FT_DivFix( cf2_intToFixed( 75 ), emRatio ); |
- |
- if ( boldenX > 0 ) |
- { |
- /* Ensure that boldenX is at least 1 pixel for synthetic bold font */ |
- /* (similar to what Avalon does) */ |
- boldenX = FT_MAX( boldenX, |
- FT_DivFix( cf2_intToFixed( unitsPerEm ), ppem ) ); |
- |
- /* Synthetic emboldening adds at least 1 pixel to darkenX, while */ |
- /* stem darkening adds at most half pixel. Since the purpose of */ |
- /* stem darkening (readability at small sizes) is met with */ |
- /* synthetic emboldening, no need to add stem darkening for a */ |
- /* synthetic bold font. */ |
- cf2_computeDarkening( emRatio, |
- ppem, |
- font->stdVW, |
- &font->darkenX, |
- boldenX, |
- FALSE ); |
- } |
- else |
- cf2_computeDarkening( emRatio, |
- ppem, |
- font->stdVW, |
- &font->darkenX, |
- 0, |
- font->stemDarkened ); |
- |
-#if 0 |
- /* since hstem is measured in the y-direction, we use the `d' member */ |
- /* of the fontMatrix */ |
- /* TODO: use the same units per em as above; check this */ |
- emRatio = cf2_fixedFracMul( cf2_intToFixed( 1000 ), fontMatrix->d ); |
-#endif |
- |
- /* set the default stem width, because it must be the same for all */ |
- /* family members; */ |
- /* choose a constant for StdHW that depends on font contrast */ |
- stdHW = cf2_getStdHW( decoder ); |
- |
- if ( stdHW > 0 && font->stdVW > 2 * stdHW ) |
- font->stdHW = FT_DivFix( cf2_intToFixed( 75 ), emRatio ); |
- else |
- { |
- /* low contrast font gets less hstem darkening */ |
- font->stdHW = FT_DivFix( cf2_intToFixed( 110 ), emRatio ); |
- } |
- |
- cf2_computeDarkening( emRatio, |
- ppem, |
- font->stdHW, |
- &font->darkenY, |
- boldenY, |
- font->stemDarkened ); |
- |
- if ( font->darkenX != 0 || font->darkenY != 0 ) |
- font->darkened = TRUE; |
- else |
- font->darkened = FALSE; |
- |
- font->reverseWinding = FALSE; /* initial expectation is CCW */ |
- |
- /* compute blue zones for this instance */ |
- cf2_blues_init( &font->blues, font ); |
- } |
- } |
- |
- |
- /* equivalent to AdobeGetOutline */ |
- FT_LOCAL_DEF( FT_Error ) |
- cf2_getGlyphOutline( CF2_Font font, |
- CF2_Buffer charstring, |
- const CF2_Matrix* transform, |
- CF2_F16Dot16* glyphWidth ) |
- { |
- FT_Error lastError = FT_Err_Ok; |
- |
- FT_Vector translation; |
- |
-#if 0 |
- FT_Vector advancePoint; |
-#endif |
- |
- CF2_Fixed advWidth = 0; |
- FT_Bool needWinding; |
- |
- |
- /* Note: use both integer and fraction for outlines. This allows bbox */ |
- /* to come out directly. */ |
- |
- translation.x = transform->tx; |
- translation.y = transform->ty; |
- |
- /* set up values based on transform */ |
- cf2_font_setup( font, transform ); |
- if ( font->error ) |
- goto exit; /* setup encountered an error */ |
- |
- /* reset darken direction */ |
- font->reverseWinding = FALSE; |
- |
- /* winding order only affects darkening */ |
- needWinding = font->darkened; |
- |
- while ( 1 ) |
- { |
- /* reset output buffer */ |
- cf2_outline_reset( &font->outline ); |
- |
- /* build the outline, passing the full translation */ |
- cf2_interpT2CharString( font, |
- charstring, |
- (CF2_OutlineCallbacks)&font->outline, |
- &translation, |
- FALSE, |
- 0, |
- 0, |
- &advWidth ); |
- |
- if ( font->error ) |
- goto exit; |
- |
- if ( !needWinding ) |
- break; |
- |
- /* check winding order */ |
- if ( font->outline.root.windingMomentum >= 0 ) /* CFF is CCW */ |
- break; |
- |
- /* invert darkening and render again */ |
- /* TODO: this should be a parameter to getOutline-computeOffset */ |
- font->reverseWinding = TRUE; |
- |
- needWinding = FALSE; /* exit after next iteration */ |
- } |
- |
- /* finish storing client outline */ |
- cf2_outline_close( &font->outline ); |
- |
- exit: |
- /* FreeType just wants the advance width; there is no translation */ |
- *glyphWidth = advWidth; |
- |
- /* free resources and collect errors from objects we've used */ |
- cf2_setError( &font->error, lastError ); |
- |
- return font->error; |
- } |
- |
- |
-/* END */ |