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layout: Store containing block inline-size separately rather than
writing it to a temporary location and overwriting it. This makes layout more idempotent, which is important for incremental layout. Also converts `is_root` to a set of flags and fixes a `TODO` concerning percentage inline heights of images.
This commit is contained in:
Patrick Walton
parent
6e3c776387
commit
423f5f0ebf
9 changed files with 141 additions and 106 deletions
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@ -215,8 +215,8 @@ pub struct ImageFragmentInfo {
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impl ImageFragmentInfo {
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/// Creates a new image fragment from the given URL and local image cache.
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///
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/// FIXME(pcwalton): The fact that image fragments store the cache in the fragment makes little sense to
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/// me.
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/// FIXME(pcwalton): The fact that image fragments store the cache in the fragment makes little
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/// sense to me.
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pub fn new(node: &ThreadSafeLayoutNode,
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image_url: Url,
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local_image_cache: Arc<Mutex<LocalImageCache<UntrustedNodeAddress>>>)
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@ -1041,7 +1041,9 @@ impl Fragment {
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StackingLevel::from_background_and_border_level(background_and_border_level);
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// Add a pseudo-display item for content box queries. This is a very bogus thing to do.
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let base_display_item = box BaseDisplayItem::new(absolute_fragment_bounds, self.node, level);
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let base_display_item = box BaseDisplayItem::new(absolute_fragment_bounds,
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self.node,
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level);
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display_list.push(PseudoDisplayItemClass(base_display_item));
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// Add the background to the list, if applicable.
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@ -1061,11 +1063,12 @@ impl Fragment {
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match self.specific {
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ScannedTextFragment(_) => {},
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_ => {
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self.build_display_list_for_background_if_applicable(&*self.style,
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display_list,
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layout_context,
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level,
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&absolute_fragment_bounds);
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self.build_display_list_for_background_if_applicable(
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&*self.style,
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display_list,
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layout_context,
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level,
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&absolute_fragment_bounds);
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}
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}
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@ -1075,10 +1078,11 @@ impl Fragment {
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match self.inline_context {
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Some(ref inline_context) => {
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for style in inline_context.styles.iter().rev() {
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self.build_display_list_for_borders_if_applicable(&**style,
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display_list,
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&absolute_fragment_bounds,
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level);
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self.build_display_list_for_borders_if_applicable(
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&**style,
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display_list,
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&absolute_fragment_bounds,
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level);
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}
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}
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None => {}
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@ -1187,42 +1191,37 @@ impl Fragment {
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// should have a real `SERVO_DEBUG` system.
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debug!("{:?}", self.build_debug_borders_around_fragment(display_list, flow_origin))
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}
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ImageFragment(_) => {
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match self.specific {
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ImageFragment(ref mut image_fragment) => {
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let image_ref = &mut image_fragment.image;
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match image_ref.get_image(self.node.to_untrusted_node_address()) {
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Some(image) => {
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debug!("(building display list) building image fragment");
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ImageFragment(ref mut image_fragment) => {
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let image_ref = &mut image_fragment.image;
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match image_ref.get_image(self.node.to_untrusted_node_address()) {
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Some(image) => {
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debug!("(building display list) building image fragment");
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// Place the image into the display list.
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let image_display_item = box ImageDisplayItem {
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base: BaseDisplayItem::new(absolute_content_box,
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self.node,
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ContentStackingLevel),
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image: image.clone(),
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stretch_size: absolute_content_box.size,
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};
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accumulator.push(display_list,
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ImageDisplayItemClass(image_display_item))
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}
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None => {
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// No image data at all? Do nothing.
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//
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// TODO: Add some kind of placeholder image.
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debug!("(building display list) no image :(");
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}
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}
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// Place the image into the display list.
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let image_display_item = box ImageDisplayItem {
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base: BaseDisplayItem::new(absolute_content_box,
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self.node,
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ContentStackingLevel),
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image: image.clone(),
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stretch_size: absolute_content_box.size,
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};
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accumulator.push(display_list, ImageDisplayItemClass(image_display_item))
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}
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None => {
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// No image data at all? Do nothing.
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//
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// TODO: Add some kind of placeholder image.
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debug!("(building display list) no image :(");
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}
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_ => fail!("shouldn't get here"),
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}
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// FIXME(pcwalton): This is a bit of an abuse of the logging
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// infrastructure. We should have a real `SERVO_DEBUG` system.
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debug!("{:?}", self.build_debug_borders_around_fragment(display_list, flow_origin))
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}
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}
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// FIXME(pcwalton): This is a bit of an abuse of the logging
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// infrastructure. We should have a real `SERVO_DEBUG` system.
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debug!("{:?}", self.build_debug_borders_around_fragment(display_list, flow_origin))
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// If this is an iframe, then send its position and size up to the constellation.
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//
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// FIXME(pcwalton): Doing this during display list construction seems potentially
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@ -1538,7 +1537,7 @@ impl Fragment {
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match self.specific {
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InlineAbsoluteHypotheticalFragment(ref mut info) => {
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let block_flow = info.flow_ref.get_mut().as_block();
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block_flow.base.position.size.inline =
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block_flow.base.block_container_inline_size =
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block_flow.base.intrinsic_inline_sizes.preferred_inline_size +
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block_flow.base.intrinsic_inline_sizes.surround_inline_size;
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@ -1549,18 +1548,19 @@ impl Fragment {
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let block_flow = info.flow_ref.get_mut().as_block();
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self.border_box.size.inline = block_flow.base.intrinsic_inline_sizes.preferred_inline_size +
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block_flow.base.intrinsic_inline_sizes.surround_inline_size;
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block_flow.base.position.size.inline = self.border_box.size.inline;
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block_flow.base.block_container_inline_size = self.border_box.size.inline;
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}
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ScannedTextFragment(_) => {
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// Scanned text fragments will have already had their content inline-sizes assigned by this
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// point.
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// Scanned text fragments will have already had their content inline-sizes assigned
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// by this point.
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self.border_box.size.inline = self.border_box.size.inline + noncontent_inline_size
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}
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ImageFragment(ref mut image_fragment_info) => {
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// TODO(ksh8281): compute border,margin
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let inline_size = ImageFragmentInfo::style_length(style_inline_size,
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image_fragment_info.dom_inline_size,
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container_inline_size);
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let inline_size = ImageFragmentInfo::style_length(
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style_inline_size,
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image_fragment_info.dom_inline_size,
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container_inline_size);
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let inline_size = match inline_size {
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Auto => {
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@ -1573,18 +1573,20 @@ impl Fragment {
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let ratio = intrinsic_width.to_f32().unwrap() /
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intrinsic_height.to_f32().unwrap();
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let specified_height = ImageFragmentInfo::style_length(style_block_size,
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image_fragment_info.dom_block_size,
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Au(0));
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let specified_height = ImageFragmentInfo::style_length(
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style_block_size,
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image_fragment_info.dom_block_size,
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Au(0));
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let specified_height = match specified_height {
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Auto => intrinsic_height,
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Specified(h) => h,
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};
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let specified_height = ImageFragmentInfo::clamp_size(specified_height,
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style_min_block_size,
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style_max_block_size,
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Au(0));
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Au::new((specified_height.to_f32().unwrap() * ratio) as i32)
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let specified_height = ImageFragmentInfo::clamp_size(
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specified_height,
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style_min_block_size,
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style_max_block_size,
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Au(0));
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Au((specified_height.to_f32().unwrap() * ratio) as i32)
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}
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},
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Specified(w) => w,
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@ -1606,7 +1608,7 @@ impl Fragment {
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/// been assigned first.
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///
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/// Ideally, this should follow CSS 2.1 § 10.6.2.
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pub fn assign_replaced_block_size_if_necessary(&mut self) {
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pub fn assign_replaced_block_size_if_necessary(&mut self, containing_block_block_size: Au) {
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match self.specific {
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GenericFragment | IframeFragment(_) | TableFragment | TableCellFragment |
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TableRowFragment | TableWrapperFragment | InputFragment(_) => return,
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@ -1627,17 +1629,17 @@ impl Fragment {
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ImageFragment(ref mut image_fragment_info) => {
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// TODO(ksh8281): compute border,margin,padding
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let inline_size = image_fragment_info.computed_inline_size();
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// FIXME(ksh8281): we shouldn't assign block-size this way
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// we don't know about size of parent's block-size
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let block_size = ImageFragmentInfo::style_length(style_block_size,
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image_fragment_info.dom_block_size,
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Au(0));
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let block_size = ImageFragmentInfo::style_length(
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style_block_size,
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image_fragment_info.dom_block_size,
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containing_block_block_size);
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let block_size = match block_size {
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Auto => {
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let scale = image_fragment_info.image_inline_size().to_f32().unwrap()
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/ inline_size.to_f32().unwrap();
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Au::new((image_fragment_info.image_block_size().to_f32().unwrap() / scale) as i32)
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Au((image_fragment_info.image_block_size().to_f32().unwrap() / scale)
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as i32)
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},
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Specified(h) => {
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h
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@ -1652,8 +1654,8 @@ impl Fragment {
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self.border_box.size.block = block_size + noncontent_block_size
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}
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ScannedTextFragment(_) => {
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// Scanned text fragments' content block-sizes are calculated by the text run scanner
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// during flow construction.
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// Scanned text fragments' content block-sizes are calculated by the text run
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// scanner during flow construction.
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self.border_box.size.block = self.border_box.size.block + noncontent_block_size
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}
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InlineBlockFragment(ref mut info) => {
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