From 97449b2e23ef5252cb4f766d9215d14e763a0732 Mon Sep 17 00:00:00 2001 From: Vincent Sanders Date: Sun, 5 Dec 2010 17:22:06 +0000 Subject: Split up properties selectors svn path=/trunk/libcss/; revision=11011 --- src/select/properties/font_family.c | 215 ++++++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 src/select/properties/font_family.c (limited to 'src/select/properties/font_family.c') diff --git a/src/select/properties/font_family.c b/src/select/properties/font_family.c new file mode 100644 index 0000000..fd2fa3c --- /dev/null +++ b/src/select/properties/font_family.c @@ -0,0 +1,215 @@ +/* + * This file is part of LibCSS + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2009 John-Mark Bell + */ + +#include "bytecode/bytecode.h" +#include "bytecode/opcodes.h" +#include "select/propset.h" +#include "select/propget.h" +#include "utils/utils.h" + +#include "select/properties/properties.h" +#include "select/properties/helpers.h" + +css_error cascade_font_family(uint32_t opv, css_style *style, + css_select_state *state) +{ + uint16_t value = CSS_FONT_FAMILY_INHERIT; + lwc_string **fonts = NULL; + uint32_t n_fonts = 0; + + if (isInherit(opv) == false) { + uint32_t v = getValue(opv); + + while (v != FONT_FAMILY_END) { + lwc_string *font = NULL; + lwc_string **temp; + + switch (v) { + case FONT_FAMILY_STRING: + case FONT_FAMILY_IDENT_LIST: + font = *((lwc_string **) + style->bytecode); + advance_bytecode(style, sizeof(font)); + break; + case FONT_FAMILY_SERIF: + if (value == CSS_FONT_FAMILY_INHERIT) + value = CSS_FONT_FAMILY_SERIF; + break; + case FONT_FAMILY_SANS_SERIF: + if (value == CSS_FONT_FAMILY_INHERIT) + value = CSS_FONT_FAMILY_SANS_SERIF; + break; + case FONT_FAMILY_CURSIVE: + if (value == CSS_FONT_FAMILY_INHERIT) + value = CSS_FONT_FAMILY_CURSIVE; + break; + case FONT_FAMILY_FANTASY: + if (value == CSS_FONT_FAMILY_INHERIT) + value = CSS_FONT_FAMILY_FANTASY; + break; + case FONT_FAMILY_MONOSPACE: + if (value == CSS_FONT_FAMILY_INHERIT) + value = CSS_FONT_FAMILY_MONOSPACE; + break; + } + + /* Only use family-names which occur before the first + * generic-family. Any values which occur after the + * first generic-family are ignored. */ + /** \todo Do this at bytecode generation time? */ + if (value == CSS_FONT_FAMILY_INHERIT && font != NULL) { + temp = state->result->alloc(fonts, + (n_fonts + 1) * sizeof(lwc_string *), + state->result->pw); + if (temp == NULL) { + if (fonts != NULL) { + state->result->alloc(fonts, 0, + state->result->pw); + } + return CSS_NOMEM; + } + + fonts = temp; + + fonts[n_fonts] = font; + + n_fonts++; + } + + v = *((uint32_t *) style->bytecode); + advance_bytecode(style, sizeof(v)); + } + } + + /* Terminate array with blank entry, if needed */ + if (n_fonts > 0) { + lwc_string **temp; + + temp = state->result->alloc(fonts, + (n_fonts + 1) * sizeof(lwc_string *), + state->result->pw); + if (temp == NULL) { + state->result->alloc(fonts, 0, state->result->pw); + return CSS_NOMEM; + } + + fonts = temp; + + fonts[n_fonts] = NULL; + } + + if (outranks_existing(getOpcode(opv), isImportant(opv), state, + isInherit(opv))) { + css_error error; + + error = set_font_family(state->result, value, fonts); + if (error != CSS_OK && n_fonts > 0) + state->result->alloc(fonts, 0, state->result->pw); + + return error; + } else { + if (n_fonts > 0) + state->result->alloc(fonts, 0, state->result->pw); + } + + return CSS_OK; +} + +css_error set_font_family_from_hint(const css_hint *hint, + css_computed_style *style) +{ + lwc_string **item; + css_error error; + + error = set_font_family(style, hint->status, hint->data.strings); + + for (item = hint->data.strings; + item != NULL && (*item) != NULL; item++) { + lwc_string_unref(*item); + } + + if (error != CSS_OK && hint->data.strings != NULL) + style->alloc(hint->data.strings, 0, style->pw); + + return error; +} + +css_error initial_font_family(css_select_state *state) +{ + css_hint hint; + css_error error; + + error = state->handler->ua_default_for_property(state->pw, + CSS_PROP_FONT_FAMILY, &hint); + if (error != CSS_OK) + return error; + + return set_font_family_from_hint(&hint, state->result); +} + +css_error compose_font_family(const css_computed_style *parent, + const css_computed_style *child, + css_computed_style *result) +{ + css_error error; + lwc_string **urls = NULL; + uint8_t type = get_font_family(child, &urls); + + if (type == CSS_FONT_FAMILY_INHERIT || result != child) { + size_t n_urls = 0; + lwc_string **copy = NULL; + + if (type == CSS_FONT_FAMILY_INHERIT) + type = get_font_family(parent, &urls); + + if (urls != NULL) { + lwc_string **i; + + for (i = urls; (*i) != NULL; i++) + n_urls++; + + copy = result->alloc(NULL, (n_urls + 1) * + sizeof(lwc_string *), + result->pw); + if (copy == NULL) + return CSS_NOMEM; + + memcpy(copy, urls, (n_urls + 1) * + sizeof(lwc_string *)); + } + + error = set_font_family(result, type, copy); + if (error != CSS_OK && copy != NULL) + result->alloc(copy, 0, result->pw); + + return error; + } + + return CSS_OK; +} + +uint32_t destroy_font_family(void *bytecode) +{ + uint32_t consumed = sizeof(uint32_t); + uint32_t value = getValue(*((uint32_t*)bytecode)); + bytecode = ((uint8_t*)bytecode) + sizeof(uint32_t); + + while (value != FONT_FAMILY_END) { + if (value == FONT_FAMILY_STRING || value == FONT_FAMILY_IDENT_LIST) { + lwc_string *str = *((lwc_string **)bytecode); + consumed += sizeof(lwc_string*); + bytecode = ((uint8_t*)bytecode) + sizeof(lwc_string*); + lwc_string_unref(str); + } + + consumed += sizeof(uint32_t); + value = *((uint32_t*)bytecode); + bytecode = ((uint8_t*)bytecode) + sizeof(uint32_t); + } + + return consumed; +} -- cgit v1.2.3