mirror of
https://github.com/servo/servo.git
synced 2025-08-16 02:45:36 +01:00
gfx: Refactor the border drawing code and split out fragment display
list building into multiple functions. This should have no functional changes; it's just code cleanup.
This commit is contained in:
Patrick Walton
parent
20b961493a
commit
dea8375613
8 changed files with 519 additions and 372 deletions
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@ -77,25 +77,20 @@ impl<'a> PaintContext<'a> {
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pub fn draw_border(&self,
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bounds: &Rect<Au>,
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border: SideOffsets2D<Au>,
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border: &SideOffsets2D<Au>,
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radius: &BorderRadii<Au>,
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color: SideOffsets2D<Color>,
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style: SideOffsets2D<border_style::T>) {
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color: &SideOffsets2D<Color>,
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style: &SideOffsets2D<border_style::T>) {
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let border = border.to_float_px();
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let radius = radius.to_radii_px();
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self.draw_target.make_current();
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self.draw_border_segment(Direction::Top, bounds, border, &radius, color, style);
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self.draw_border_segment(Direction::Right, bounds, border, &radius, color, style);
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self.draw_border_segment(Direction::Bottom, bounds, border, &radius, color, style);
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self.draw_border_segment(Direction::Left, bounds, border, &radius, color, style);
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self.draw_border_segment(Direction::Top, bounds, &border, &radius, color, style);
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self.draw_border_segment(Direction::Right, bounds, &border, &radius, color, style);
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self.draw_border_segment(Direction::Bottom, bounds, &border, &radius, color, style);
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self.draw_border_segment(Direction::Left, bounds, &border, &radius, color, style);
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}
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pub fn draw_line(&self,
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bounds: &Rect<Au>,
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color: Color,
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style: border_style::T) {
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pub fn draw_line(&self, bounds: &Rect<Au>, color: Color, style: border_style::T) {
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self.draw_target.make_current();
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self.draw_line_segment(bounds, &Default::default(), color, style);
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@ -108,7 +103,8 @@ impl<'a> PaintContext<'a> {
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let left_top = Point2D(rect.origin.x, rect.origin.y);
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let right_top = Point2D(rect.origin.x + rect.size.width, rect.origin.y);
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let left_bottom = Point2D(rect.origin.x, rect.origin.y + rect.size.height);
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let right_bottom = Point2D(rect.origin.x + rect.size.width, rect.origin.y + rect.size.height);
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let right_bottom = Point2D(rect.origin.x + rect.size.width,
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rect.origin.y + rect.size.height);
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path_builder.move_to(left_top);
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path_builder.line_to(right_top);
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@ -166,10 +162,10 @@ impl<'a> PaintContext<'a> {
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fn draw_border_segment(&self,
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direction: Direction,
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bounds: &Rect<Au>,
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border: SideOffsets2D<f32>,
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border: &SideOffsets2D<f32>,
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radius: &BorderRadii<AzFloat>,
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color: SideOffsets2D<Color>,
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style: SideOffsets2D<border_style::T>) {
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color: &SideOffsets2D<Color>,
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style: &SideOffsets2D<border_style::T>) {
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let (style_select, color_select) = match direction {
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Direction::Top => (style.top, color.top),
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Direction::Left => (style.left, color.left),
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@ -177,59 +173,111 @@ impl<'a> PaintContext<'a> {
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Direction::Bottom => (style.bottom, color.bottom)
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};
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match style_select{
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border_style::none => {
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match style_select {
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border_style::none | border_style::hidden => {}
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border_style::dotted => {
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// FIXME(sammykim): This doesn't work well with dash_pattern and cap_style.
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self.draw_dashed_border_segment(direction,
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bounds,
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border,
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color_select,
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DashSize::DottedBorder);
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}
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border_style::hidden => {
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border_style::dashed => {
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self.draw_dashed_border_segment(direction,
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bounds,
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border,
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color_select,
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DashSize::DashedBorder);
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}
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//FIXME(sammykim): This doesn't work with dash_pattern and cap_style well. I referred firefox code.
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border_style::dotted => {
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self.draw_dashed_border_segment(direction, bounds, border, color_select, DashSize::DottedBorder);
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border_style::solid => {
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self.draw_solid_border_segment(direction, bounds, border, radius, color_select);
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}
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border_style::dashed => {
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self.draw_dashed_border_segment(direction, bounds, border, color_select, DashSize::DashedBorder);
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}
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border_style::solid => {
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self.draw_solid_border_segment(direction,bounds,border,radius,color_select);
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}
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border_style::double => {
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border_style::double => {
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self.draw_double_border_segment(direction, bounds, border, radius, color_select);
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}
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border_style::groove | border_style::ridge => {
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self.draw_groove_ridge_border_segment(direction, bounds, border, radius, color_select, style_select);
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self.draw_groove_ridge_border_segment(direction,
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bounds,
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border,
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radius,
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color_select,
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style_select);
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}
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border_style::inset | border_style::outset => {
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self.draw_inset_outset_border_segment(direction, bounds, border, radius, color_select, style_select);
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self.draw_inset_outset_border_segment(direction,
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bounds,
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border,
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radius,
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color_select,
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style_select);
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}
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}
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}
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fn draw_line_segment(&self, bounds: &Rect<Au>, radius: &BorderRadii<AzFloat>, color: Color, style: border_style::T) {
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fn draw_line_segment(&self,
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bounds: &Rect<Au>,
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radius: &BorderRadii<AzFloat>,
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color: Color,
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style: border_style::T) {
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let border = SideOffsets2D::new_all_same(bounds.size.width).to_float_px();
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match style {
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border_style::none | border_style::hidden => {}
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border_style::dotted => {
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self.draw_dashed_border_segment(Direction::Right, bounds, border, color, DashSize::DottedBorder);
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border_style::none | border_style::hidden => {}
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border_style::dotted => {
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self.draw_dashed_border_segment(Direction::Right,
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bounds,
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&border,
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color,
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DashSize::DottedBorder);
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}
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border_style::dashed => {
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self.draw_dashed_border_segment(Direction::Right, bounds, border, color, DashSize::DashedBorder);
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border_style::dashed => {
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self.draw_dashed_border_segment(Direction::Right,
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bounds,
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&border,
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color,
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DashSize::DashedBorder);
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}
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border_style::solid => {
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self.draw_solid_border_segment(Direction::Right, bounds, border, radius, color);
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border_style::solid => {
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self.draw_solid_border_segment(Direction::Right, bounds, &border, radius, color)
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}
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border_style::double => {
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self.draw_double_border_segment(Direction::Right, bounds, border, radius, color);
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border_style::double => {
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self.draw_double_border_segment(Direction::Right, bounds, &border, radius, color)
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}
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border_style::groove | border_style::ridge => {
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self.draw_groove_ridge_border_segment(Direction::Right, bounds, border, radius, color, style);
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self.draw_groove_ridge_border_segment(Direction::Right,
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bounds,
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&border,
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radius,
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color,
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style);
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}
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border_style::inset | border_style::outset => {
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self.draw_inset_outset_border_segment(Direction::Right, bounds, border, radius, color, style);
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self.draw_inset_outset_border_segment(Direction::Right,
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bounds,
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&border,
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radius,
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color,
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style);
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}
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}
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}
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fn draw_border_path(&self,
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bounds: &Rect<f32>,
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direction: Direction,
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border: &SideOffsets2D<f32>,
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radii: &BorderRadii<AzFloat>,
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color: Color) {
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let mut path_builder = self.draw_target.create_path_builder();
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self.create_border_path_segment(&mut path_builder,
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bounds,
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direction,
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border,
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radii);
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let draw_options = DrawOptions::new(1.0, 0);
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self.draw_target.fill(&path_builder.finish(), &ColorPattern::new(color), &draw_options);
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}
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// The following comment is wonderful, and stolen from
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// gecko:gfx/thebes/gfxContext.cpp:RoundedRectangle for reference.
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//
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@ -310,14 +358,13 @@ impl<'a> PaintContext<'a> {
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// For the various corners and for each axis, the sign of this
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// constant changes, or it might be 0 -- it's multiplied by the
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// appropriate multiplier from the list before using.
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#[allow(non_snake_case)]
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fn draw_border_path(&self,
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bounds: &Rect<f32>,
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direction: Direction,
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border: SideOffsets2D<f32>,
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radius: &BorderRadii<AzFloat>,
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color: Color) {
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fn create_border_path_segment(&self,
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path_builder: &mut PathBuilder,
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bounds: &Rect<f32>,
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direction: Direction,
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border: &SideOffsets2D<f32>,
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radius: &BorderRadii<AzFloat>) {
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// T = top, B = bottom, L = left, R = right
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let box_TL = bounds.origin;
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@ -325,9 +372,6 @@ impl<'a> PaintContext<'a> {
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let box_BL = box_TL + Point2D(0.0, bounds.size.height);
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let box_BR = box_TL + Point2D(bounds.size.width, bounds.size.height);
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let draw_opts = DrawOptions::new(1.0, 0);
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let path_builder = self.draw_target.create_path_builder();
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let rad_R: AzFloat = 0.;
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let rad_BR = rad_R + Float::frac_pi_4();
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let rad_B = rad_BR + Float::frac_pi_4();
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@ -354,9 +398,9 @@ impl<'a> PaintContext<'a> {
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}
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match direction {
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Direction::Top => {
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let edge_TL = box_TL + dx(radius.top_left.max(border.left));
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let edge_TR = box_TR + dx(-radius.top_right.max(border.right));
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Direction::Top => {
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let edge_TL = box_TL + dx(radius.top_left.max(border.left));
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let edge_TR = box_TR + dx(-radius.top_right.max(border.right));
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let edge_BR = edge_TR + dy(border.top);
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let edge_BL = edge_TL + dy(border.top);
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@ -368,7 +412,8 @@ impl<'a> PaintContext<'a> {
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if radius.top_right != 0. {
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// the origin is the center of the arcs we're about to draw.
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let origin = edge_TR + Point2D((border.right - radius.top_right).max(0.), radius.top_right);
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let origin = edge_TR + Point2D((border.right - radius.top_right).max(0.),
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radius.top_right);
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// the elbow is the inside of the border's curve.
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let distance_to_elbow = (radius.top_right - border.top).max(0.);
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@ -380,16 +425,17 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(edge_BL);
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if radius.top_left != 0. {
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let origin = edge_TL + Point2D(-(border.left - radius.top_left).max(0.), radius.top_left);
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let origin = edge_TL + Point2D(-(border.left - radius.top_left).max(0.),
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radius.top_left);
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let distance_to_elbow = (radius.top_left - border.top).max(0.);
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path_builder.arc(origin, distance_to_elbow, rad_T, rad_TL, true);
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path_builder.arc(origin, radius.top_left, rad_TL, rad_T, false);
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}
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}
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Direction::Left => {
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let edge_TL = box_TL + dy(radius.top_left.max(border.top));
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let edge_BL = box_BL + dy(-radius.bottom_left.max(border.bottom));
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Direction::Left => {
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let edge_TL = box_TL + dy(radius.top_left.max(border.top));
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let edge_BL = box_BL + dy(-radius.bottom_left.max(border.bottom));
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let edge_TR = edge_TL + dx(border.left);
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let edge_BR = edge_BL + dx(border.left);
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@ -400,7 +446,8 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(corner_TL);
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if radius.top_left != 0. {
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let origin = edge_TL + Point2D(radius.top_left, -(border.top - radius.top_left).max(0.));
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let origin = edge_TL + Point2D(radius.top_left,
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-(border.top - radius.top_left).max(0.));
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let distance_to_elbow = (radius.top_left - border.left).max(0.);
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path_builder.arc(origin, radius.top_left, rad_L, rad_TL, false);
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@ -411,16 +458,18 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(edge_BR);
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if radius.bottom_left != 0. {
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let origin = edge_BL + Point2D(radius.bottom_left, (border.bottom - radius.bottom_left).max(0.));
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let origin = edge_BL +
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Point2D(radius.bottom_left,
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(border.bottom - radius.bottom_left).max(0.));
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let distance_to_elbow = (radius.bottom_left - border.left).max(0.);
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path_builder.arc(origin, distance_to_elbow, rad_L, rad_BL, true);
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path_builder.arc(origin, radius.bottom_left, rad_BL, rad_L, false);
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}
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}
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Direction::Right => {
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let edge_TR = box_TR + dy(radius.top_right.max(border.top));
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let edge_BR = box_BR + dy(-radius.bottom_right.max(border.bottom));
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Direction::Right => {
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let edge_TR = box_TR + dy(radius.top_right.max(border.top));
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let edge_BR = box_BR + dy(-radius.bottom_right.max(border.bottom));
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let edge_TL = edge_TR + dx(-border.right);
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let edge_BL = edge_BR + dx(-border.right);
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@ -431,7 +480,8 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(edge_TL);
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if radius.top_right != 0. {
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let origin = edge_TR + Point2D(-radius.top_right, -(border.top - radius.top_right).max(0.));
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let origin = edge_TR + Point2D(-radius.top_right,
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-(border.top - radius.top_right).max(0.));
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let distance_to_elbow = (radius.top_right - border.right).max(0.);
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path_builder.arc(origin, distance_to_elbow, rad_R, rad_TR, true);
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@ -442,7 +492,9 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(corner_BR);
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if radius.bottom_right != 0. {
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let origin = edge_BR + Point2D(-radius.bottom_right, (border.bottom - radius.bottom_right).max(0.));
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let origin = edge_BR +
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Point2D(-radius.bottom_right,
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(border.bottom - radius.bottom_right).max(0.));
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let distance_to_elbow = (radius.bottom_right - border.right).max(0.);
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path_builder.arc(origin, radius.bottom_right, rad_R, rad_BR, false);
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@ -450,8 +502,8 @@ impl<'a> PaintContext<'a> {
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}
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}
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Direction::Bottom => {
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let edge_BL = box_BL + dx(radius.bottom_left.max(border.left));
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let edge_BR = box_BR + dx(-radius.bottom_right.max(border.right));
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let edge_BL = box_BL + dx(radius.bottom_left.max(border.left));
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let edge_BR = box_BR + dx(-radius.bottom_right.max(border.right));
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let edge_TL = edge_BL + dy(-border.bottom);
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let edge_TR = edge_BR + dy(-border.bottom);
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@ -462,7 +514,8 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(edge_TR);
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if radius.bottom_right != 0. {
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let origin = edge_BR + Point2D((border.right - radius.bottom_right).max(0.), -radius.bottom_right);
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let origin = edge_BR + Point2D((border.right - radius.bottom_right).max(0.),
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-radius.bottom_right);
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let distance_to_elbow = (radius.bottom_right - border.bottom).max(0.);
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path_builder.arc(origin, distance_to_elbow, rad_B, rad_BR, true);
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@ -473,7 +526,8 @@ impl<'a> PaintContext<'a> {
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path_builder.line_to(corner_BL);
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if radius.bottom_left != 0. {
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let origin = edge_BL - Point2D((border.left - radius.bottom_left).max(0.), radius.bottom_left);
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let origin = edge_BL - Point2D((border.left - radius.bottom_left).max(0.),
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radius.bottom_left);
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let distance_to_elbow = (radius.bottom_left - border.bottom).max(0.);
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path_builder.arc(origin, radius.bottom_left, rad_B, rad_BL, false);
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@ -481,6 +535,7 @@ impl<'a> PaintContext<'a> {
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}
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}
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}
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}
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let path = path_builder.finish();
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self.draw_target.fill(&path, &ColorPattern::new(color), &draw_opts);
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@ -488,9 +543,9 @@ impl<'a> PaintContext<'a> {
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fn draw_dashed_border_segment(&self,
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direction: Direction,
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bounds: &Rect<Au>,
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border: SideOffsets2D<f32>,
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color: Color,
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bounds: &Rect<Au>,
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border: &SideOffsets2D<f32>,
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color: Color,
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dash_size: DashSize) {
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let rect = bounds.to_azure_rect();
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let draw_opts = DrawOptions::new(1u as AzFloat, 0 as uint16_t);
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@ -546,14 +601,19 @@ impl<'a> PaintContext<'a> {
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&draw_opts);
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}
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fn draw_solid_border_segment(&self, direction: Direction, bounds: &Rect<Au>, border: SideOffsets2D<f32>, radius: &BorderRadii<AzFloat>, color: Color) {
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fn draw_solid_border_segment(&self,
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direction: Direction,
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bounds: &Rect<Au>,
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border: &SideOffsets2D<f32>,
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radius: &BorderRadii<AzFloat>,
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color: Color) {
|
||||
let rect = bounds.to_azure_rect();
|
||||
self.draw_border_path(&rect, direction, border, radius, color);
|
||||
}
|
||||
|
||||
fn get_scaled_bounds(&self,
|
||||
bounds: &Rect<Au>,
|
||||
border: SideOffsets2D<f32>,
|
||||
bounds: &Rect<Au>,
|
||||
border: &SideOffsets2D<f32>,
|
||||
shrink_factor: f32) -> Rect<f32> {
|
||||
let rect = bounds.to_azure_rect();
|
||||
let scaled_border = SideOffsets2D::new(shrink_factor * border.top,
|
||||
|
|
@ -571,25 +631,30 @@ impl<'a> PaintContext<'a> {
|
|||
return Color::new(color.r * scale_factor, color.g * scale_factor, color.b * scale_factor, color.a);
|
||||
}
|
||||
|
||||
fn draw_double_border_segment(&self, direction: Direction, bounds: &Rect<Au>, border: SideOffsets2D<f32>, radius: &BorderRadii<AzFloat>, color: Color) {
|
||||
let scaled_border = SideOffsets2D::new((1.0/3.0) * border.top,
|
||||
(1.0/3.0) * border.right,
|
||||
(1.0/3.0) * border.bottom,
|
||||
(1.0/3.0) * border.left);
|
||||
fn draw_double_border_segment(&self,
|
||||
direction: Direction,
|
||||
bounds: &Rect<Au>,
|
||||
border: &SideOffsets2D<f32>,
|
||||
radius: &BorderRadii<AzFloat>,
|
||||
color: Color) {
|
||||
let scaled_border = SideOffsets2D::new((1.0/3.0) * border.top,
|
||||
(1.0/3.0) * border.right,
|
||||
(1.0/3.0) * border.bottom,
|
||||
(1.0/3.0) * border.left);
|
||||
let inner_scaled_bounds = self.get_scaled_bounds(bounds, border, 2.0/3.0);
|
||||
// draw the outer portion of the double border.
|
||||
self.draw_solid_border_segment(direction, bounds, scaled_border, radius, color);
|
||||
self.draw_solid_border_segment(direction, bounds, &scaled_border, radius, color);
|
||||
// draw the inner portion of the double border.
|
||||
self.draw_border_path(&inner_scaled_bounds, direction, scaled_border, radius, color);
|
||||
self.draw_border_path(&inner_scaled_bounds, direction, &scaled_border, radius, color);
|
||||
}
|
||||
|
||||
fn draw_groove_ridge_border_segment(&self,
|
||||
direction: Direction,
|
||||
bounds: &Rect<Au>,
|
||||
border: SideOffsets2D<f32>,
|
||||
radius: &BorderRadii<AzFloat>,
|
||||
color: Color,
|
||||
style: border_style::T) {
|
||||
bounds: &Rect<Au>,
|
||||
border: &SideOffsets2D<f32>,
|
||||
radius: &BorderRadii<AzFloat>,
|
||||
color: Color,
|
||||
style: border_style::T) {
|
||||
// original bounds as a Rect<f32>, with no scaling.
|
||||
let original_bounds = self.get_scaled_bounds(bounds, border, 0.0);
|
||||
// shrink the bounds by 1/2 of the border, leaving the innermost 1/2 of the border
|
||||
|
|
@ -617,44 +682,65 @@ impl<'a> PaintContext<'a> {
|
|||
}
|
||||
|
||||
let (outer_color, inner_color) = match (direction, is_groove) {
|
||||
(Direction::Top, true) | (Direction::Left, true) |
|
||||
(Direction::Right, false) | (Direction::Bottom, false) => (darker_color, lighter_color),
|
||||
(Direction::Top, true) | (Direction::Left, true) |
|
||||
(Direction::Right, false) | (Direction::Bottom, false) => {
|
||||
(darker_color, lighter_color)
|
||||
}
|
||||
(Direction::Top, false) | (Direction::Left, false) |
|
||||
(Direction::Right, true) | (Direction::Bottom, true) => (lighter_color, darker_color)
|
||||
(Direction::Right, true) | (Direction::Bottom, true) => (lighter_color, darker_color),
|
||||
};
|
||||
// outer portion of the border
|
||||
self.draw_border_path(&original_bounds, direction, scaled_border, radius, outer_color);
|
||||
self.draw_border_path(&original_bounds, direction, &scaled_border, radius, outer_color);
|
||||
// inner portion of the border
|
||||
self.draw_border_path(&inner_scaled_bounds, direction, scaled_border, radius, inner_color);
|
||||
self.draw_border_path(&inner_scaled_bounds,
|
||||
direction,
|
||||
&scaled_border,
|
||||
radius,
|
||||
inner_color);
|
||||
}
|
||||
|
||||
fn draw_inset_outset_border_segment(&self,
|
||||
direction: Direction,
|
||||
bounds: &Rect<Au>,
|
||||
border: SideOffsets2D<f32>,
|
||||
radius: &BorderRadii<AzFloat>,
|
||||
color: Color,
|
||||
style: border_style::T) {
|
||||
bounds: &Rect<Au>,
|
||||
border: &SideOffsets2D<f32>,
|
||||
radius: &BorderRadii<AzFloat>,
|
||||
color: Color,
|
||||
style: border_style::T) {
|
||||
let is_inset = match style {
|
||||
border_style::inset => true,
|
||||
border_style::outset => false,
|
||||
_ => panic!("invalid border style")
|
||||
border_style::inset => true,
|
||||
border_style::outset => false,
|
||||
_ => panic!("invalid border style")
|
||||
};
|
||||
// original bounds as a Rect<f32>
|
||||
let original_bounds = self.get_scaled_bounds(bounds, border, 0.0);
|
||||
|
||||
let mut scaled_color;
|
||||
|
||||
// You can't scale black color (i.e. 'scaled = 0 * scale', equals black).
|
||||
let mut scaled_color;
|
||||
if color.r != 0.0 || color.g != 0.0 || color.b != 0.0 {
|
||||
scaled_color = match direction {
|
||||
Direction::Top | Direction::Left => self.scale_color(color, if is_inset { 2.0/3.0 } else { 1.0 }),
|
||||
Direction::Right | Direction::Bottom => self.scale_color(color, if is_inset { 1.0 } else { 2.0/3.0 })
|
||||
Direction::Top | Direction::Left => {
|
||||
self.scale_color(color, if is_inset { 2.0/3.0 } else { 1.0 })
|
||||
}
|
||||
Direction::Right | Direction::Bottom => {
|
||||
self.scale_color(color, if is_inset { 1.0 } else { 2.0/3.0 })
|
||||
}
|
||||
};
|
||||
} else {
|
||||
scaled_color = match direction {
|
||||
Direction::Top | Direction::Left => if is_inset { Color::new(0.3, 0.3, 0.3, color.a) } else { Color::new(0.7, 0.7, 0.7, color.a) },
|
||||
Direction::Right | Direction::Bottom => if is_inset { Color::new(0.7, 0.7, 0.7, color.a) } else { Color::new(0.3, 0.3, 0.3, color.a) }
|
||||
Direction::Top | Direction::Left => {
|
||||
if is_inset {
|
||||
Color::new(0.3, 0.3, 0.3, color.a)
|
||||
} else {
|
||||
Color::new(0.7, 0.7, 0.7, color.a)
|
||||
}
|
||||
}
|
||||
Direction::Right | Direction::Bottom => {
|
||||
if is_inset {
|
||||
Color::new(0.7, 0.7, 0.7, color.a)
|
||||
} else {
|
||||
Color::new(0.3, 0.3, 0.3, color.a)
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
|
|
@ -852,9 +938,8 @@ impl<'a> PaintContext<'a> {
|
|||
}
|
||||
|
||||
pub fn push_clip_if_applicable(&self) {
|
||||
match self.clip_rect {
|
||||
None => {}
|
||||
Some(ref clip_rect) => self.draw_push_clip(clip_rect),
|
||||
if let Some(ref clip_rect) = self.clip_rect {
|
||||
self.draw_push_clip(clip_rect)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue