Auto merge of #8795 - cheba:zero-rect, r=SimonSapin

Replace ZERO_RECT with Rect::zero()

This is a proposed in servo/servo#8792 clean up.

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components/gfx/display_list/mod.rs

@@ -43,7 +43,7 @@ use style::properties::ComputedValues;
 use text::TextRun;
 use text::glyph::CharIndex;
 use util::cursor::Cursor;
-use util::geometry::{self, MAX_RECT, ZERO_RECT};
+use util::geometry::{self, MAX_RECT};
 use util::linked_list::prepend_from;
 use util::mem::HeapSizeOf;
 use util::opts;
@@ -1043,7 +1043,7 @@ impl ClippingRegion {
     #[inline]
     pub fn empty() -> ClippingRegion {
         ClippingRegion {
-            main: ZERO_RECT,
+            main: Rect::zero(),
             complex: Vec::new(),
         }
     }
@@ -1073,7 +1073,7 @@ impl ClippingRegion {
     #[inline]
     pub fn intersect_rect(self, rect: &Rect<Au>) -> ClippingRegion {
         ClippingRegion {
-            main: self.main.intersection(rect).unwrap_or(ZERO_RECT),
+            main: self.main.intersection(rect).unwrap_or(Rect::zero()),
             complex: self.complex,
         }
     }

components/gfx/paint_context.rs

@@ -35,7 +35,7 @@ use std::{f32, mem, ptr};
 use style::computed_values::{border_style, filter, image_rendering, mix_blend_mode};
 use text::TextRun;
 use text::glyph::CharIndex;
-use util::geometry::{self, MAX_RECT, PagePx, ScreenPx, ZERO_POINT, ZERO_RECT};
+use util::geometry::{self, MAX_RECT, PagePx, ScreenPx, ZERO_POINT};
 use util::opts;
 use util::range::Range;
 
@@ -1580,7 +1580,7 @@ impl<'a> PaintContext<'a> {
         let side_inflation = blur_radius * BLUR_INFLATION_FACTOR;
         let tile_box_bounds =
             geometry::f32_rect_to_au_rect(self.page_rect.to_untyped()).intersection(box_bounds)
-                                                         .unwrap_or(ZERO_RECT)
+                                                         .unwrap_or(Rect::zero())
                                                          .inflate(side_inflation, side_inflation);
         TemporaryDrawTarget::from_bounds(&self.draw_target, &tile_box_bounds)
     }

components/layout/flow.rs

@@ -56,7 +56,6 @@ use table_colgroup::TableColGroupFlow;
 use table_row::TableRowFlow;
 use table_rowgroup::TableRowGroupFlow;
 use table_wrapper::TableWrapperFlow;
-use util::geometry::ZERO_RECT;
 use util::logical_geometry::{LogicalRect, LogicalSize, WritingMode};
 use util::print_tree::PrintTree;
 use wrapper::{PseudoElementType, ThreadSafeLayoutNode};
@@ -1054,7 +1053,7 @@ impl BaseFlow {
             children: FlowList::new(),
             intrinsic_inline_sizes: IntrinsicISizes::new(),
             position: LogicalRect::zero(writing_mode),
-            overflow: ZERO_RECT,
+            overflow: Rect::zero(),
             parallel: FlowParallelInfo::new(),
             floats: Floats::new(writing_mode),
             collapsible_margins: CollapsibleMargins::new(),

components/layout/inline.rs

@@ -31,7 +31,6 @@ use style::values::computed::LengthOrPercentage;
 use text;
 use unicode_bidi;
 use util;
-use util::geometry::ZERO_RECT;
 use util::logical_geometry::{LogicalRect, LogicalSize, WritingMode};
 use util::print_tree::PrintTree;
 use util::range::{Range, RangeIndex};
@@ -1749,7 +1748,7 @@ impl Flow for InlineFlow {
     fn repair_style(&mut self, _: &Arc<ComputedValues>) {}
 
     fn compute_overflow(&self) -> Rect<Au> {
-        let mut overflow = ZERO_RECT;
+        let mut overflow = Rect::zero();
         let flow_size = self.base.position.size.to_physical(self.base.writing_mode);
         let relative_containing_block_size =
             &self.base.early_absolute_position_info.relative_containing_block_size;

components/layout/table_colgroup.rs

@@ -17,7 +17,6 @@ use std::fmt;
 use std::sync::Arc;
 use style::properties::ComputedValues;
 use style::values::computed::LengthOrPercentageOrAuto;
-use util::geometry::ZERO_RECT;
 use util::logical_geometry::LogicalSize;
 
 /// A table formatting context.
@@ -96,7 +95,7 @@ impl Flow for TableColGroupFlow {
     fn repair_style(&mut self, _: &Arc<ComputedValues>) {}
 
     fn compute_overflow(&self) -> Rect<Au> {
-        ZERO_RECT
+        Rect::zero()
     }
 
     fn generated_containing_block_size(&self, _: OpaqueFlow) -> LogicalSize<Au> {

components/util/geometry.rs

@@ -64,17 +64,6 @@ pub static ZERO_POINT: Point2D<Au> = Point2D {
     y: Au(0),
 };
 
-pub static ZERO_RECT: Rect<Au> = Rect {
-    origin: Point2D {
-        x: Au(0),
-        y: Au(0),
-    },
-    size: Size2D {
-        width: Au(0),
-        height: Au(0),
-    }
-};
-
 pub static MAX_RECT: Rect<Au> = Rect {
     origin: Point2D {
         x: Au(i32::MIN / 2),