| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Copied with modifications from ash/accessibility, refactored for use in |
| // chromecast. |
| |
| #include "chromecast/graphics/accessibility/accessibility_highlight_layer.h" |
| |
| #include "third_party/skia/include/core/SkPaint.h" |
| #include "third_party/skia/include/core/SkPath.h" |
| #include "ui/aura/window.h" |
| #include "ui/compositor/layer.h" |
| #include "ui/compositor/paint_recorder.h" |
| #include "ui/display/display.h" |
| #include "ui/display/screen.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/wm/core/coordinate_conversion.h" |
| |
| namespace chromecast { |
| |
| namespace { |
| |
| // Extra margin to add to the layer in DIP. |
| const int kLayerMargin = 1; |
| |
| } // namespace |
| |
| AccessibilityHighlightLayer::AccessibilityHighlightLayer( |
| aura::Window* root_window, |
| AccessibilityLayerDelegate* delegate) |
| : AccessibilityLayer(root_window, delegate) {} |
| |
| AccessibilityHighlightLayer::~AccessibilityHighlightLayer() = default; |
| |
| void AccessibilityHighlightLayer::Set(const std::vector<gfx::Rect>& rects, |
| SkColor color) { |
| rects_ = rects; |
| highlight_color_ = color; |
| |
| // Calculate the bounds of all the rects together, that represents |
| // the bounds of the full layer. |
| gfx::Rect bounds; |
| for (const gfx::Rect rect : rects_) { |
| bounds.Union(rect); |
| } |
| |
| int inset = kLayerMargin; |
| bounds.Inset(-inset, -inset, -inset, -inset); |
| |
| display::Display display = |
| display::Screen::GetScreen()->GetDisplayMatching(bounds); |
| ::wm::ConvertRectFromScreen(root_window(), &bounds); |
| CreateOrUpdateLayer(root_window(), "AccessibilityHighlight", bounds); |
| } |
| |
| bool AccessibilityHighlightLayer::CanAnimate() const { |
| return false; |
| } |
| |
| int AccessibilityHighlightLayer::GetInset() const { |
| return kLayerMargin; |
| } |
| |
| void AccessibilityHighlightLayer::OnPaintLayer( |
| const ui::PaintContext& context) { |
| ui::PaintRecorder recorder(context, layer_->size()); |
| |
| cc::PaintFlags flags; |
| flags.setAntiAlias(true); |
| flags.setStyle(cc::PaintFlags::kFill_Style); |
| flags.setColor(highlight_color_); |
| |
| gfx::Rect r = layer_->bounds(); |
| |
| for (gfx::Rect rect : rects_) { |
| // Offset the rect based on where the layer is on the screen. |
| rect.Offset(-r.OffsetFromOrigin()); |
| // Add a little bit of margin to the drawn box. |
| rect.Inset(-kLayerMargin, -kLayerMargin, -kLayerMargin, -kLayerMargin); |
| recorder.canvas()->DrawRect(rect, flags); |
| } |
| } |
| |
| } // namespace chromecast |