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Add a flag to dump the computed style values

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I used this to trace #11818 to a style bug, rather than a layout bug.
This commit is contained in:
Michael Howell 2016-08-12 11:11:23 -07:00
parent a22913569c
commit 748a573917
4 changed files with 48 additions and 0 deletions
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10
components/util/opts.rs
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@ -155,6 +155,9 @@ pub struct Opts {
/// used for testing the hardening of the constellation.
pub random_pipeline_closure_seed: Option<usize>,
/// Dumps the DOM after restyle.
pub dump_style_tree: bool,
/// Dumps the flow tree after a layout.
pub dump_flow_tree: bool,
@ -231,6 +234,9 @@ pub struct DebugOptions {
/// Disable antialiasing of rendered text on the HTML canvas element.
pub disable_canvas_aa: bool,
/// Print the DOM after each restyle.
pub dump_style_tree: bool,
/// Print the flow tree after each layout.
pub dump_flow_tree: bool,
@ -314,6 +320,7 @@ impl DebugOptions {
"bubble-widths" => debug_options.bubble_widths = true,
"disable-text-aa" => debug_options.disable_text_aa = true,
"disable-canvas-aa" => debug_options.disable_text_aa = true,
"dump-style-tree" => debug_options.dump_style_tree = true,
"dump-flow-tree" => debug_options.dump_flow_tree = true,
"dump-display-list" => debug_options.dump_display_list = true,
"dump-display-list-json" => debug_options.dump_display_list_json = true,
@ -357,6 +364,7 @@ pub fn print_debug_usage(app: &str) -> ! {
print_option("bubble-widths", "Bubble intrinsic widths separately like other engines.");
print_option("disable-text-aa", "Disable antialiasing of rendered text.");
print_option("disable-canvas-aa", "Disable antialiasing on the HTML canvas element.");
print_option("dump-style-tree", "Print the DOM with computed styles after each restyle.");
print_option("dump-flow-tree", "Print the flow tree after each layout.");
print_option("dump-display-list", "Print the display list after each layout.");
print_option("dump-display-list-json", "Print the display list in JSON form.");
@ -500,6 +508,7 @@ pub fn default_opts() -> Opts {
random_pipeline_closure_probability: None,
random_pipeline_closure_seed: None,
sandbox: false,
dump_style_tree: false,
dump_flow_tree: false,
dump_display_list: false,
dump_display_list_json: false,
@ -807,6 +816,7 @@ pub fn from_cmdline_args(args: &[String]) -> ArgumentParsingResult {
paint_flashing: debug_options.paint_flashing,
enable_text_antialiasing: !debug_options.disable_text_aa,
enable_canvas_antialiasing: !debug_options.disable_canvas_aa,
dump_style_tree: debug_options.dump_style_tree,
dump_flow_tree: debug_options.dump_flow_tree,
dump_display_list: debug_options.dump_display_list,
dump_display_list_json: debug_options.dump_display_list_json,