From 6ba000db056d7e9b70a7e154a003644046bf7e98 Mon Sep 17 00:00:00 2001 From: John Mark Bell Date: Sat, 29 Jan 2011 21:51:45 +0000 Subject: Add support for opacity property svn path=/trunk/libcss/; revision=11527 --- src/select/properties/opacity.c | 62 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 src/select/properties/opacity.c (limited to 'src/select/properties/opacity.c') diff --git a/src/select/properties/opacity.c b/src/select/properties/opacity.c new file mode 100644 index 0000000..9ef0998 --- /dev/null +++ b/src/select/properties/opacity.c @@ -0,0 +1,62 @@ +/* + * This file is part of LibCSS + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2011 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 css__cascade_opacity(uint32_t opv, css_style *style, + css_select_state *state) +{ + uint16_t value = CSS_OPACITY_INHERIT; + css_fixed opacity = 0; + + if (isInherit(opv) == false) { + value = CSS_Z_INDEX_SET; + + opacity = *((css_fixed *) style->bytecode); + advance_bytecode(style, sizeof(opacity)); + } + + if (css__outranks_existing(getOpcode(opv), isImportant(opv), state, + isInherit(opv))) { + return set_opacity(state->computed, value, opacity); + } + + return CSS_OK; +} + +css_error css__set_opacity_from_hint(const css_hint *hint, + css_computed_style *style) +{ + return set_opacity(style, hint->status, hint->data.fixed); +} + +css_error css__initial_opacity(css_select_state *state) +{ + return set_opacity(state->computed, CSS_OPACITY_SET, INTTOFIX(1)); +} + +css_error css__compose_opacity(const css_computed_style *parent, + const css_computed_style *child, + css_computed_style *result) +{ + css_fixed opacity = 0; + uint8_t type = get_opacity(child, &opacity); + + if (type == CSS_OPACITY_INHERIT) { + type = get_opacity(parent, &opacity); + } + + return set_opacity(result, type, opacity); +} + -- cgit v1.2.3