diff options
Diffstat (limited to 'src/select/properties/clip.c')
| -rw-r--r-- | src/select/properties/clip.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/select/properties/clip.c b/src/select/properties/clip.c new file mode 100644 index 0000000..e2ebdca --- /dev/null +++ b/src/select/properties/clip.c @@ -0,0 +1,136 @@ +/* + * 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->result, 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->result, 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); +} |