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Allow overflow:hidden to scroll via script

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This commit is contained in:
Martin Robinson 2017-07-24 14:36:42 +02:00 • committed by Glenn Watson
parent 316878b489
commit 537025800f
13 changed files with 20 additions and 63 deletions
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38
components/layout/display_list_builder.rs
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@ -71,7 +71,7 @@ use style_traits::CSSPixel;
use style_traits::cursor::Cursor;
use table_cell::CollapsedBordersForCell;
use webrender_api::{ClipId, ColorF, ComplexClipRegion, GradientStop, LocalClip, RepeatMode};
use webrender_api::{LineStyle, ScrollPolicy, TransformStyle};
use webrender_api::{LineStyle, ScrollPolicy, ScrollSensitivity, TransformStyle};
use webrender_helpers::{ToBorderRadius, ToMixBlendMode, ToRectF, ToTransformStyle};
trait ResolvePercentage {
@ -2257,7 +2257,6 @@ pub trait BlockFlowDisplayListBuilding {
-> ClipId;
fn setup_scroll_root_for_overflow(&mut self,
state: &mut DisplayListBuildState,
preserved_state: &mut PreservedDisplayListState,
border_box: &Rect<Au>);
fn setup_scroll_root_for_css_clip(&mut self,
state: &mut DisplayListBuildState,
@ -2483,7 +2482,7 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
self.transform_clip_to_coordinate_space(state, preserved_state);
}
self.setup_scroll_root_for_overflow(state, preserved_state, &stacking_relative_border_box);
self.setup_scroll_root_for_overflow(state, &stacking_relative_border_box);
self.setup_scroll_root_for_css_clip(state, preserved_state, &stacking_relative_border_box);
self.base.clip = state.clip_stack.last().cloned().unwrap_or_else(max_rect);
@ -2498,7 +2497,6 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
fn setup_scroll_root_for_overflow(&mut self,
state: &mut DisplayListBuildState,
preserved_state: &mut PreservedDisplayListState,
border_box: &Rect<Au>) {
if !self.overflow_style_may_require_scroll_root() {
return;
@ -2526,27 +2524,12 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
return;
}
let overflow_x = self.fragment.style.get_box().overflow_x;
let overflow_y = self.fragment.style.get_box().overflow_y;
let content_size = self.base.overflow.scroll.origin + self.base.overflow.scroll.size;
let mut content_size = Size2D::new(content_size.x, content_size.y);
if overflow_x::T::hidden == overflow_x {
content_size.width = content_box.size.width;
}
if overflow_x::T::hidden == overflow_y {
content_size.height = content_box.size.height;
}
if overflow_x::T::hidden == overflow_y || overflow_x::T::hidden == overflow_x {
preserved_state.push_clip(state, &border_box, self.positioning());
}
let mut root_type = ScrollRootType::ScrollFrame;
if overflow_x::T::hidden == overflow_y && overflow_x::T::hidden == overflow_x {
root_type = ScrollRootType::Clip;
}
let sensitivity = if overflow_x::T::hidden == self.fragment.style.get_box().overflow_x &&
overflow_x::T::hidden == self.fragment.style.get_box().overflow_y {
ScrollSensitivity::Script
} else {
ScrollSensitivity::ScriptAndInputEvents
};
let clip_rect = build_inner_border_box_for_border_rect(&border_box, &self.fragment.style);
let mut clip = ClippingRegion::from_rect(&clip_rect);
@ -2555,6 +2538,9 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
clip.intersect_with_rounded_rect(&clip_rect, &radii)
}
let content_size = self.base.overflow.scroll.origin + self.base.overflow.scroll.size;
let content_size = Size2D::new(content_size.x, content_size.y);
let parent_id = self.scroll_root_id(state.layout_context.id);
state.add_scroll_root(
ScrollRoot {
@ -2562,7 +2548,7 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
parent_id: parent_id,
clip: clip,
content_rect: Rect::new(content_box.origin, content_size),
root_type,
root_type: ScrollRootType::ScrollFrame(sensitivity),
},
self.base.stacking_context_id
);