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Port ash's accessibility focus ring to chromecast.
- Copies ash's AccessibilityFocusRing and friends into
chromecast/graphics/accessibility. See patchset chromium#1 for the pure
copy operation without modifications.
- Modify the above to work without ash: explicit configuration of
the CastWindowManagerAura's root window and window activation
client (ash has global singletons for these).
- Add AccessibilityManager class which delegates to the above,
roughly analogous to the equivalent in chromeos. Configured as a
browser process singleton in CastBrowserProcess.
- Call AccessibilityManager from the accessibilityPrivate
extensionsion API, so that ChromeVox can use it.
Bug: internal b/73383411
Test: manual test
Change-Id: I0019c56e7be84abc2a97b429b3820f8d8f69ffbf
Reviewed-on: https://chromium-review.googlesource.com/1071720
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Alex Sakhartchouk <alexst@chromium.org>
Reviewed-by: Albert Chaulk <achaulk@chromium.org>
Commit-Queue: Ryan Daum <rdaum@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563299}- Loading branch information
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May 31, 2018
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84 changes: 84 additions & 0 deletions
84
chromecast/graphics/accessibility/accessibility_cursor_ring_layer.cc
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // 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. | ||
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| // Copied with modifications from ash/accessibility, refactored for use in | ||
| // chromecast. | ||
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| #include "chromecast/graphics/accessibility/accessibility_cursor_ring_layer.h" | ||
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| #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/wm/core/coordinate_conversion.h" | ||
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| namespace chromecast { | ||
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| namespace { | ||
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| // The number of pixels in the color gradient that fades to transparent. | ||
| const int kGradientWidth = 8; | ||
|
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| // The radius of the ring in pixels. | ||
| const int kCursorRingRadius = 24; | ||
|
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| // Extra margin to add to the layer in pixels. | ||
| const int kLayerMargin = 8; | ||
|
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| } // namespace | ||
|
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| AccessibilityCursorRingLayer::AccessibilityCursorRingLayer( | ||
| aura::Window* root_window, | ||
| AccessibilityLayerDelegate* delegate, | ||
| int red, | ||
| int green, | ||
| int blue) | ||
| : FocusRingLayer(root_window, delegate), | ||
| red_(red), | ||
| green_(green), | ||
| blue_(blue) {} | ||
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| AccessibilityCursorRingLayer::~AccessibilityCursorRingLayer() = default; | ||
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| void AccessibilityCursorRingLayer::Set(const gfx::Point& location) { | ||
| location_ = location; | ||
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| gfx::Rect bounds = gfx::Rect(location.x(), location.y(), 0, 0); | ||
| int inset = kGradientWidth + kCursorRingRadius + kLayerMargin; | ||
| bounds.Inset(-inset, -inset, -inset, -inset); | ||
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| DCHECK(root_window()); | ||
| display::Display display = | ||
| display::Screen::GetScreen()->GetDisplayMatching(bounds); | ||
| ::wm::ConvertRectFromScreen(root_window(), &bounds); | ||
| CreateOrUpdateLayer(root_window(), "AccessibilityCursorRing", bounds); | ||
| } | ||
|
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| void AccessibilityCursorRingLayer::OnPaintLayer( | ||
| const ui::PaintContext& context) { | ||
| ui::PaintRecorder recorder(context, layer()->size()); | ||
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| cc::PaintFlags flags; | ||
| flags.setAntiAlias(true); | ||
| flags.setStyle(cc::PaintFlags::kStroke_Style); | ||
| flags.setStrokeWidth(2); | ||
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| gfx::Rect r = layer()->bounds(); | ||
| r.Offset(-r.OffsetFromOrigin()); | ||
| r.Inset(kLayerMargin, kLayerMargin, kLayerMargin, kLayerMargin); | ||
| const int w = kGradientWidth; | ||
| for (int i = 0; i < w; ++i) { | ||
| flags.setColor(SkColorSetARGB(255 * i * i / (w * w), red_, green_, blue_)); | ||
| SkPath path; | ||
| path.addOval(SkRect::MakeXYWH(r.x(), r.y(), r.width(), r.height())); | ||
| r.Inset(1, 1, 1, 1); | ||
| recorder.canvas()->DrawPath(path, flags); | ||
| } | ||
| } | ||
|
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| } // namespace chromecast |
46 changes: 46 additions & 0 deletions
46
chromecast/graphics/accessibility/accessibility_cursor_ring_layer.h
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| // 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. | ||
|
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| // Copied with modifications from ash/accessibility, refactored for use in | ||
| // chromecast. | ||
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| #ifndef CHROMECAST_GRAPHICS_ACCESSIBILITY_ACCESSIBILITY_CURSOR_RING_LAYER_H_ | ||
| #define CHROMECAST_GRAPHICS_ACCESSIBILITY_ACCESSIBILITY_CURSOR_RING_LAYER_H_ | ||
|
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| #include "chromecast/graphics/accessibility/accessibility_focus_ring.h" | ||
| #include "chromecast/graphics/accessibility/focus_ring_layer.h" | ||
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| namespace chromecast { | ||
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| // A subclass of FocusRingLayer that highlights the mouse cursor while it's | ||
| // moving, to make it easier to find visually. | ||
| class AccessibilityCursorRingLayer : public FocusRingLayer { | ||
| public: | ||
| AccessibilityCursorRingLayer(aura::Window* root_window, | ||
| AccessibilityLayerDelegate* delegate, | ||
| int red, | ||
| int green, | ||
| int blue); | ||
| ~AccessibilityCursorRingLayer() override; | ||
|
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| // Create the layer and update its bounds and position in the hierarchy. | ||
| void Set(const gfx::Point& location); | ||
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| private: | ||
| // ui::LayerDelegate overrides: | ||
| void OnPaintLayer(const ui::PaintContext& context) override; | ||
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| // The current location. | ||
| gfx::Point location_; | ||
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| int red_; | ||
| int green_; | ||
| int blue_; | ||
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| DISALLOW_COPY_AND_ASSIGN(AccessibilityCursorRingLayer); | ||
| }; | ||
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| } // namespace chromecast | ||
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| #endif // CHROMECAST_GRAPHICS_ACCESSIBILITY_ACCESSIBILITY_CURSOR_RING_LAYER_H_ |
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