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Implement fill and stroke functions for all pattern types and check the zero size gradient.

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This commit is contained in:
Hyowon Kim 2015-06-17 08:56:35 +09:00
parent ee22ae2635
commit 2e230bdb93
6 changed files with 49 additions and 36 deletions
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66
components/canvas/canvas_paint_task.rs
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@ -250,6 +250,10 @@ impl<'a> CanvasPaintTask<'a> {
}
fn fill_rect(&self, rect: &Rect<f32>) {
if is_zero_size_gradient(&self.state.fill_style) {
return; // Paint nothing if gradient size is zero.
}
let draw_rect = Rect::new(rect.origin,
match self.state.fill_style {
Pattern::Surface(ref surface) => {
@ -281,14 +285,19 @@ impl<'a> CanvasPaintTask<'a> {
}
fn stroke_rect(&self, rect: &Rect<f32>) {
match self.state.stroke_style {
Pattern::Color(ref color) => {
self.drawtarget.stroke_rect(rect, color, &self.state.stroke_opts, &self.state.draw_options)
}
_ => {
// TODO(pcwalton)
}
};
if is_zero_size_gradient(&self.state.stroke_style) {
return; // Paint nothing if gradient size is zero.
}
if self.need_to_draw_shadow() {
self.draw_with_shadow(&rect, |new_draw_target: &DrawTarget| {
new_draw_target.stroke_rect(rect, self.state.stroke_style.to_pattern_ref(),
&self.state.stroke_opts, &self.state.draw_options);
});
} else {
self.drawtarget.stroke_rect(rect, self.state.stroke_style.to_pattern_ref(),
&self.state.stroke_opts, &self.state.draw_options);
}
}
fn begin_path(&mut self) {
@ -300,26 +309,24 @@ impl<'a> CanvasPaintTask<'a> {
}
fn fill(&self) {
match self.state.fill_style {
Pattern::Color(ref color) => {
self.drawtarget.fill(&self.path_builder.finish(), color, &self.state.draw_options);
}
_ => {
// TODO(pcwalton)
}
};
if is_zero_size_gradient(&self.state.fill_style) {
return; // Paint nothing if gradient size is zero.
}
self.drawtarget.fill(&self.path_builder.finish(),
self.state.fill_style.to_pattern_ref(),
&self.state.draw_options);
}
fn stroke(&self) {
match self.state.stroke_style {
Pattern::Color(ref color) => {
self.drawtarget.stroke(&self.path_builder.finish(),
color, &self.state.stroke_opts, &self.state.draw_options);
}
_ => {
// TODO
}
};
if is_zero_size_gradient(&self.state.stroke_style) {
return; // Paint nothing if gradient size is zero.
}
self.drawtarget.stroke(&self.path_builder.finish(),
self.state.stroke_style.to_pattern_ref(),
&self.state.stroke_opts,
&self.state.draw_options);
}
fn clip(&self) {
@ -733,6 +740,15 @@ fn write_pixels(draw_target: &DrawTarget,
draw_options);
}
fn is_zero_size_gradient(pattern: &Pattern) -> bool {
if let &Pattern::LinearGradient(ref gradient) = pattern {
if gradient.is_zero_size() {
return true;
}
}
return false;
}
pub trait SizeToi32 {
fn to_i32(&self) -> Size2D<i32>;
}