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Don't coalesce UnscannedTextBoxes if their font styles differ.

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This commit is contained in:
Brian J. Burg 2012-11-19 15:17:51 -08:00
parent d76195757a
commit 0b37bdb332
2 changed files with 7 additions and 12 deletions
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12
src/servo/layout/box.rs
View file

@ -111,7 +111,8 @@ trait RenderBoxMethods {
pure fn is_replaced() -> bool;
pure fn can_split() -> bool;
pure fn is_whitespace_only() -> bool;
pure fn can_merge_with_box(@self, other: @RenderBox) -> bool;
// TODO(Issue #220): this should be a pure/const method
fn can_merge_with_box(@self, other: @RenderBox) -> bool;
pure fn content_box() -> Rect<Au>;
pure fn border_box() -> Rect<Au>;
pure fn margin_box() -> Rect<Au>;
@ -170,11 +171,13 @@ impl RenderBox : RenderBoxMethods {
}
}
pure fn can_merge_with_box(@self, other: @RenderBox) -> bool {
fn can_merge_with_box(@self, other: @RenderBox) -> bool {
assert !core::box::ptr_eq(self, other);
match (self, other) {
(@UnscannedTextBox(*), @UnscannedTextBox(*)) => true,
(@UnscannedTextBox(*), @UnscannedTextBox(*)) => {
self.font_style() == other.font_style()
},
(@TextBox(_,d1), @TextBox(_,d2)) => { core::box::ptr_eq(d1.run, d2.run) }
(_, _) => false
}
@ -524,9 +527,6 @@ impl RenderBox : RenderBoxMethods {
}
// Converts this node's ComputedStyle to a font style used in the graphics code.
//
// FIXME: Do we really need two structures here? Perhaps we can just use the structures from
// rust-css in the graphics code.
fn font_style(@self) -> FontStyle {
do self.with_style_of_nearest_element |my_style| {
let font_families = do my_style.font_family().map |family| {

7
src/servo/layout/inline.rs
View file

@ -186,14 +186,13 @@ priv impl TextRunScanner {
}
// helper functions
pure fn can_coalesce_text_nodes(boxes: &[@RenderBox], left_i: uint, right_i: uint) -> bool {
fn can_coalesce_text_nodes(boxes: &[@RenderBox], left_i: uint, right_i: uint) -> bool {
assert left_i < boxes.len();
assert right_i > 0 && right_i < boxes.len();
assert left_i != right_i;
let (left, right) = (boxes[left_i], boxes[right_i]);
match (left, right) {
// TODO(Issue #117): check whether text styles, fonts are the same.
(@UnscannedTextBox(*), @UnscannedTextBox(*)) => left.can_merge_with_box(right),
(_, _) => false
}
@ -239,8 +238,6 @@ priv impl TextRunScanner {
// TODO(Issue #115): use actual CSS 'white-space' property of relevant style.
let compression = CompressWhitespaceNewline;
let transformed_text = transform_text(text, compression);
// TODO(Issue #116): use actual font and style for corresponding
// DOM node to create text run.
// TODO(Issue #177): text run creation must account for text-renderability by fontgroup fonts.
// this is probably achieved by creating fontgroup above, and then letting FontGroup decide
// which Font to stick into the TextRun.
@ -278,11 +275,9 @@ priv impl TextRunScanner {
// create the run, then make new boxes with the run and adjusted text indices
// TODO(Issue #116): use actual font for corresponding DOM node to create text run.
// TODO(Issue #177): text run creation must account for text-renderability by fontgroup fonts.
// this is probably achieved by creating fontgroup above, and then letting FontGroup decide
// which Font to stick into the TextRun.
// FIXME: Is this right? --pcwalton
let font_style = in_boxes[self.clump.begin()].font_style();
let fontgroup = ctx.font_ctx.get_resolved_font_for_style(&font_style);
let run = @TextRun::new(fontgroup.fonts[0], move run_str);