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add RareFlowFlags

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This commit is contained in:
patrick kim 2014-01-22 16:29:23 +09:00
parent dac1176d15
commit baad6e3963
2 changed files with 111 additions and 12 deletions
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6
src/components/main/layout/box_.rs
View file

@ -778,9 +778,9 @@ impl Box {
text_run: text_box.run.clone(),
range: text_box.range,
text_color: text_color,
overline_color: flow_flags.overline_color,
underline_color: flow_flags.underline_color,
line_through_color: flow_flags.line_through_color,
overline_color: flow_flags.overline_color(text_color),
underline_color: flow_flags.underline_color(text_color),
line_through_color: flow_flags.line_through_color(text_color),
flags: text_flags,
};

117
src/components/main/layout/flow.rs
View file

@ -263,6 +263,11 @@ pub struct FlowFlagsInfo{
flags: FlowFlags,
/// text-decoration colors
rare_flow_flags: Option<RareFlowFlags>,
}
#[deriving(Clone)]
pub struct RareFlowFlags {
underline_color: Color,
overline_color: Color,
line_through_color: Color,
@ -296,27 +301,116 @@ impl FlowFlagsInfo {
flags.set_override_line_through(text_decoration.line_through);
// TODO(ksh8281) compute text-decoration-color,style,line
let underline_color = style.Color.color.to_gfx_color();
let overline_color = style.Color.color.to_gfx_color();
let line_through_color = style.Color.color.to_gfx_color();
let rare_flow_flags = if flags.is_text_decoration_enable() {
Some(RareFlowFlags {
underline_color: style.Color.color.to_gfx_color(),
overline_color: style.Color.color.to_gfx_color(),
line_through_color: style.Color.color.to_gfx_color(),
})
} else {
None
};
FlowFlagsInfo {
flags: flags,
underline_color: underline_color,
overline_color: overline_color,
line_through_color: line_through_color,
rare_flow_flags: rare_flow_flags,
}
}
pub fn underline_color(&self, default_color: Color) -> Color {
match self.rare_flow_flags {
Some(ref data) => {
data.underline_color
},
None => {
default_color
}
}
}
pub fn overline_color(&self, default_color: Color) -> Color {
match self.rare_flow_flags {
Some(ref data) => {
data.overline_color
},
None => {
default_color
}
}
}
pub fn line_through_color(&self, default_color: Color) -> Color {
match self.rare_flow_flags {
Some(ref data) => {
data.line_through_color
},
None => {
default_color
}
}
}
/// Propagates text decoration flags from an appropriate parent flow per CSS 2.1 § 16.3.1.
pub fn propagate_text_decoration_from_parent(&mut self, parent: FlowFlagsInfo) {
if !parent.flags.is_text_decoration_enable() {
return ;
}
if !self.flags.is_text_decoration_enable() && parent.flags.is_text_decoration_enable() {
self.rare_flow_flags = parent.rare_flow_flags.clone();
return ;
}
if !self.flags.override_underline() && parent.flags.override_underline() {
self.underline_color = parent.underline_color;
match parent.rare_flow_flags {
Some(ref parent_data) => {
match self.rare_flow_flags {
Some(ref mut data) => {
data.underline_color = parent_data.underline_color;
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
}
if !self.flags.override_overline() && parent.flags.override_overline() {
self.overline_color = parent.overline_color;
match parent.rare_flow_flags {
Some(ref parent_data) => {
match self.rare_flow_flags {
Some(ref mut data) => {
data.overline_color = parent_data.overline_color;
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
}
if !self.flags.override_line_through() && parent.flags.override_line_through() {
self.line_through_color = parent.line_through_color;
match parent.rare_flow_flags {
Some(ref parent_data) => {
match self.rare_flow_flags {
Some(ref mut data) => {
data.line_through_color = parent_data.line_through_color;
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
},
None => {
fail!("if flow has text-decoration, it must have rare_flow_flags");
}
}
}
self.flags.set_text_decoration_override(parent.flags);
}
@ -366,6 +460,11 @@ impl FlowFlags {
pub fn set_text_decoration_override(&mut self, parent: FlowFlags) {
*self = FlowFlags(**self | (*parent & TEXT_DECORATION_OVERRIDE_BITMASK));
}
#[inline]
pub fn is_text_decoration_enable(&self) -> bool {
(**self & TEXT_DECORATION_OVERRIDE_BITMASK) != 0
}
}
/// Data common to all flows.