forked from enlightenment/efl
Evas font-engine: handle invisible chars in font query.
SVN revision: 56429
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@ -5,12 +5,6 @@
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#include "evas_bidi_utils.h" /*defines BIDI_SUPPORT if possible */
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#include "evas_font_private.h" /* for Frame-Queuing support */
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#define EVAS_FONT_CHARACTER_IS_INVISIBLE(x) ( \
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((0x200C <= (x)) && ((x) <= 0x200D)) || /* ZWNJ..ZWH */ \
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((0x200E <= (x)) && ((x) <= 0x200F)) || /* BIDI stuff */ \
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((0x202A <= (x)) && ((x) <= 0x202E)) /* BIDI stuff */ \
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)
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#define WORD_CACHE_MAXLEN 50
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/* How many to cache */
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#define WORD_CACHE_NWORDS 40
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@ -29,6 +29,13 @@ void evas_common_font_int_use_trim(void);
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void evas_common_font_int_unload(RGBA_Font_Int *fi);
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void evas_common_font_int_reload(RGBA_Font_Int *fi);
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/* Macros for text walking */
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#define EVAS_FONT_CHARACTER_IS_INVISIBLE(x) ( \
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((0x200C <= (x)) && ((x) <= 0x200D)) || /* ZWNJ..ZWH */ \
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((0x200E <= (x)) && ((x) <= 0x200F)) || /* BIDI stuff */ \
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((0x202A <= (x)) && ((x) <= 0x202E)) /* BIDI stuff */ \
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)
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/**
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* @def EVAS_FONT_UPDATE_KERN()
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* @internal
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@ -106,6 +113,7 @@ void evas_common_font_int_reload(RGBA_Font_Int *fi);
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do \
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{ \
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int adv; \
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int visible; \
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prev_index = 0; \
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last_adv = 0; \
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for (char_index = 0 ; *text ; text++, char_index++) \
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@ -136,10 +144,19 @@ void evas_common_font_int_reload(RGBA_Font_Int *fi);
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continue; \
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} \
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kern = 0; \
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bear_x = fg->glyph_out->left; \
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bear_y = fg->glyph_out->top; \
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adv = fg->glyph->advance.x >> 16; \
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width = fg->glyph_out->bitmap.width; \
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if (EVAS_FONT_CHARACTER_IS_INVISIBLE(gl)) \
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{ \
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adv = width = bear_x = bear_y = 0; \
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visible = 0; \
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} \
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else \
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{ \
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bear_x = fg->glyph_out->left; \
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bear_y = fg->glyph_out->top; \
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adv = fg->glyph->advance.x >> 16; \
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width = fg->glyph_out->bitmap.width; \
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visible = 1; \
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} \
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/* hmmm kerning means i can't sanely do my own cached metric */ \
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/* tables! grrr - this means font face sharing is kinda... not */ \
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/* an option if you want performance */ \
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@ -153,8 +170,11 @@ void evas_common_font_int_reload(RGBA_Font_Int *fi);
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LKU(fi->ft_mutex); \
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/* If the current one is not a compositing char, do the */ \
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/* previous advance and set the current advance as the next */ \
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/* advance to do */ \
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if (adv > 0) \
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/* advance to do. If it's an invisible char (i.e one that shouldn't
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* be printed anyhow, we want to advance everything as if it's
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* a visible char. FIXME: use a proper way to detect diacritic
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* instead. */ \
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if ((adv > 0) || !visible) \
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{ \
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pen_x += last_adv; \
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last_adv = adv; \
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