diff options
Diffstat (limited to 'src/select/properties/z_index.c')
-rw-r--r-- | src/select/properties/z_index.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/select/properties/z_index.c b/src/select/properties/z_index.c new file mode 100644 index 0000000..aeb01db --- /dev/null +++ b/src/select/properties/z_index.c @@ -0,0 +1,73 @@ +/* + * 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 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 (outranks_existing(getOpcode(opv), isImportant(opv), state, + isInherit(opv))) { + return set_z_index(state->result, value, index); + } + + return CSS_OK; +} + +css_error 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 initial_z_index(css_select_state *state) +{ + return set_z_index(state->result, CSS_Z_INDEX_AUTO, 0); +} + +css_error 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); +} + +uint32_t destroy_z_index(void *bytecode) +{ + return generic_destroy_number(bytecode); +} |