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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 cascade_clip(uint32_t opv, css_style *style,
css_select_state *state)
{
uint16_t value = CSS_CLIP_INHERIT;
css_computed_clip_rect rect = { 0, 0, 0, 0,
UNIT_PX, UNIT_PX, UNIT_PX, UNIT_PX,
false, false, false, false };
if (isInherit(opv) == false) {
switch (getValue(opv) & CLIP_SHAPE_MASK) {
case CLIP_SHAPE_RECT:
if (getValue(opv) & CLIP_RECT_TOP_AUTO) {
rect.top_auto = true;
} else {
rect.top = *((css_fixed *) style->bytecode);
advance_bytecode(style, sizeof(css_fixed));
rect.tunit = *((uint32_t *) style->bytecode);
advance_bytecode(style, sizeof(uint32_t));
}
if (getValue(opv) & CLIP_RECT_RIGHT_AUTO) {
rect.right_auto = true;
} else {
rect.right = *((css_fixed *) style->bytecode);
advance_bytecode(style, sizeof(css_fixed));
rect.runit = *((uint32_t *) style->bytecode);
advance_bytecode(style, sizeof(uint32_t));
}
if (getValue(opv) & CLIP_RECT_BOTTOM_AUTO) {
rect.bottom_auto = true;
} else {
rect.bottom = *((css_fixed *) style->bytecode);
advance_bytecode(style, sizeof(css_fixed));
rect.bunit = *((uint32_t *) style->bytecode);
advance_bytecode(style, sizeof(uint32_t));
}
if (getValue(opv) & CLIP_RECT_LEFT_AUTO) {
rect.left_auto = true;
} else {
rect.left = *((css_fixed *) style->bytecode);
advance_bytecode(style, sizeof(css_fixed));
rect.lunit = *((uint32_t *) style->bytecode);
advance_bytecode(style, sizeof(uint32_t));
}
break;
case CLIP_AUTO:
value = CSS_CLIP_AUTO;
break;
}
}
rect.tunit = to_css_unit(rect.tunit);
rect.runit = to_css_unit(rect.runit);
rect.bunit = to_css_unit(rect.bunit);
rect.lunit = to_css_unit(rect.lunit);
if (outranks_existing(getOpcode(opv), isImportant(opv), state,
isInherit(opv))) {
return set_clip(state->computed, value, &rect);
}
return CSS_OK;
}
css_error set_clip_from_hint(const css_hint *hint,
css_computed_style *style)
{
return set_clip(style, hint->status, hint->data.clip);
}
css_error initial_clip(css_select_state *state)
{
css_computed_clip_rect rect = { 0, 0, 0, 0,
CSS_UNIT_PX, CSS_UNIT_PX, CSS_UNIT_PX, CSS_UNIT_PX,
false, false, false, false };
return set_clip(state->computed, CSS_CLIP_AUTO, &rect);
}
css_error compose_clip(const css_computed_style *parent,
const css_computed_style *child,
css_computed_style *result)
{
css_computed_clip_rect rect = { 0, 0, 0, 0,
CSS_UNIT_PX, CSS_UNIT_PX, CSS_UNIT_PX, CSS_UNIT_PX,
false, false, false, false };
uint8_t type = get_clip(child, &rect);
if ((child->uncommon == NULL && parent->uncommon != NULL) ||
type == CSS_CLIP_INHERIT ||
(child->uncommon != NULL && result != child)) {
if ((child->uncommon == NULL && parent->uncommon != NULL) ||
type == CSS_CLIP_INHERIT) {
type = get_clip(parent, &rect);
}
return set_clip(result, type, &rect);
}
return CSS_OK;
}
uint32_t destroy_clip(void *bytecode)
{
uint32_t value = getValue(*((uint32_t*)bytecode));
bool has_rect = value & CLIP_SHAPE_RECT;
int nonautos = 0;
if (has_rect) {
if ((value & CLIP_RECT_TOP_AUTO) == 0)
nonautos += 1;
if ((value & CLIP_RECT_RIGHT_AUTO) == 0)
nonautos += 1;
if ((value & CLIP_RECT_BOTTOM_AUTO) == 0)
nonautos += 1;
if ((value & CLIP_RECT_LEFT_AUTO) == 0)
nonautos += 1;
}
return sizeof(uint32_t) + ((sizeof(css_fixed) + sizeof(uint32_t)) * nonautos);
}
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