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/*
* This file is part of LibCSS
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
*/
#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_z_index(uint32_t opv, css_style *style,
css_select_state *state)
{
uint16_t value = CSS_Z_INDEX_INHERIT;
css_fixed index = 0;
if (isInherit(opv) == false) {
switch (getValue(opv)) {
case Z_INDEX_SET:
value = CSS_Z_INDEX_SET;
index = *((css_fixed *) style->bytecode);
advance_bytecode(style, sizeof(index));
break;
case Z_INDEX_AUTO:
value = CSS_Z_INDEX_AUTO;
break;
}
}
if (css__outranks_existing(getOpcode(opv), isImportant(opv), state,
isInherit(opv))) {
return set_z_index(state->computed, value, index);
}
return CSS_OK;
}
css_error css__set_z_index_from_hint(const css_hint *hint,
css_computed_style *style)
{
return set_z_index(style, hint->status, hint->data.integer);
}
css_error css__initial_z_index(css_select_state *state)
{
return set_z_index(state->computed, CSS_Z_INDEX_AUTO, 0);
}
css_error css__compose_z_index(const css_computed_style *parent,
const css_computed_style *child,
css_computed_style *result)
{
int32_t index = 0;
uint8_t type = get_z_index(child, &index);
if (type == CSS_Z_INDEX_INHERIT) {
type = get_z_index(parent, &index);
}
return set_z_index(result, type, index);
}
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