Update tooltips and screenreader strings for Projector annotator

- Add tooltips to the marker colors. Render the colors as part of the
button instead of as a child view because the child view is exepcted to has a tool tip, but a tool tip cannot be set on the base class ui::View (as opposed to a Button)
- Update the marker tooltip to indicate the enabled state
- Add additional instruction for using the annotator to the screenreader
string

Tested:https://screencast.googleplex.com/cast/NTE5NTc3ODcxMzcxNDY4OHw3NDk3NzIzZi1hNQ

Bug: b/229292077
Bug: b/230110148
Change-Id: I129c50c180eba2c381272c88df9ce1400fd50e1a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3607444
Reviewed-by: Li Lin <llin@chromium.org>
Commit-Queue: Courtney Wong <courtneywong@chromium.org>
Cr-Commit-Position: refs/heads/main@{#999700}

ash/ash_strings.grd

@@ -1722,8 +1722,20 @@ This file contains the strings for ash.
         Stop screen recording
       </message>
 
-      <message name="IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TITLE" desc="The accessible name and title for the projector annotation button in the system tray.">
-        Screencast tools
+      <message name="IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TOOLTIP" desc="The tooltip for the projector marker button in the system tray, indicating whether the marker is enabled or not.">
+        Toggle marker. <ph name="STATE_TEXT">$1<ex>Marker is on.</ex></ph>
+      </message>
+
+      <message name="IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ACCESSIBLE_TITLE" desc="The accessible title for the projector marker button in the system tray, telling the user how to use the marker."> 
+        Toggle marker. <ph name="STATE_TEXT">$1<ex>Marker is on.</ex></ph> Use the trackpad, touchscreen, or stylus to draw onscreen.
+      </message>
+
+      <message name="IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ON_STATE" desc="Text indicating that the marker is on.">
+        Marker is on.
+      </message>
+
+      <message name="IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_OFF_STATE" desc="Text indicating that the marker is off.">
+        Marker is off.
       </message>
 
       <!-- Overview Mode -->

ash/ash_strings_grd/IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ACCESSIBLE_TITLE.png.sha1

@@ -0,0 +1 @@
+f8e710cf8a36f5b5fea864c51903293ef417b34a

ash/ash_strings_grd/IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_OFF_STATE.png.sha1

@@ -0,0 +1 @@
+46bb4c9f279dd1221f56effa0cabafd8e0a4b13f

ash/ash_strings_grd/IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ON_STATE.png.sha1

@@ -0,0 +1 @@
+cb0c8dcc4350a2dfc80e62778ceff2757340f639

ash/ash_strings_grd/IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TITLE.png.sha1

@@ -1 +0,0 @@
-9a1f2c91aadfd797e1aa2dddbb211968ff58bdc6

ash/ash_strings_grd/IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TOOLTIP.png.sha1

@@ -0,0 +1 @@
+f8e710cf8a36f5b5fea864c51903293ef417b34a

ash/projector/projector_annotation_tray.cc

@@ -96,7 +96,7 @@ ProjectorAnnotationTray::ProjectorAnnotationTray(Shelf* shelf)
       image_view_(
           tray_container()->AddChildView(std::make_unique<views::ImageView>())),
       pen_view_(nullptr) {
-  image_view_->SetTooltipText(GetAccessibleNameForTray());
+  image_view_->SetTooltipText(GetTooltip());
   image_view_->SetHorizontalAlignment(views::ImageView::Alignment::kCenter);
   image_view_->SetVerticalAlignment(views::ImageView::Alignment::kCenter);
   image_view_->SetPreferredSize(gfx::Size(kTrayItemSize, kTrayItemSize));
@@ -134,8 +134,13 @@ void ProjectorAnnotationTray::ClickedOutsideBubble() {
 }
 
 std::u16string ProjectorAnnotationTray::GetAccessibleNameForTray() {
-  return l10n_util::GetStringUTF16(
-      IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TITLE);
+  std::u16string enabled_state = l10n_util::GetStringUTF16(
+      GetCurrentTool() == kToolNone
+          ? IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_OFF_STATE
+          : IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ON_STATE);
+  return l10n_util::GetStringFUTF16(
+      IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ACCESSIBLE_TITLE,
+      enabled_state);
 }
 
 void ProjectorAnnotationTray::HandleLocaleChange() {}
@@ -199,13 +204,13 @@ void ProjectorAnnotationTray::ShowBubble() {
     marker_view_container->SetLayoutManager(std::move(box_layout));
 
     for (SkColor color : kPenColors) {
-      auto* colorButton = marker_view_container->AddChildView(
+      auto* color_button = marker_view_container->AddChildView(
           std::make_unique<ProjectorColorButton>(
               base::BindRepeating(&ProjectorAnnotationTray::OnPenColorPressed,
                                   base::Unretained(this), color),
               color, kColorButtonColorViewSize, kColorButtonViewRadius,
               l10n_util::GetStringUTF16(GetAccessibleNameForColor(color))));
-      colorButton->SetToggled(current_pen_color_ == color);
+      color_button->SetToggled(current_pen_color_ == color);
     }
     setup_layered_view(marker_view_container);
   }
@@ -264,6 +269,7 @@ void ProjectorAnnotationTray::UpdateIcon() {
       GetIconForTool(tool, current_pen_color_),
       AshColorProvider::Get()->GetContentLayerColor(
           AshColorProvider::ContentLayerType::kIconColorPrimary)));
+  image_view_->SetTooltipText(GetTooltip());
   SetIsActive(tool != kToolNone);
 }
 
@@ -300,4 +306,13 @@ void ProjectorAnnotationTray::ResetTray() {
   SetEnabled(false);
 }
 
+std::u16string ProjectorAnnotationTray::GetTooltip() {
+  std::u16string enabled_state = l10n_util::GetStringUTF16(
+      GetCurrentTool() == kToolNone
+          ? IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_OFF_STATE
+          : IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_ON_STATE);
+  return l10n_util::GetStringFUTF16(
+      IDS_ASH_STATUS_AREA_PROJECTOR_ANNOTATION_TRAY_TOOLTIP, enabled_state);
+}
+
 }  // namespace ash

ash/projector/projector_annotation_tray.h

@@ -62,6 +62,8 @@ class ProjectorAnnotationTray : public TrayBackgroundView {
   // Resets the tray to its default state.
   void ResetTray();
 
+  std::u16string GetTooltip();
+
   // Image view of the tray icon.
   views::ImageView* const image_view_;
 

ash/projector/ui/projector_color_button.cc

@@ -5,6 +5,7 @@
 #include "ash/projector/ui/projector_color_button.h"
 
 #include "ash/resources/vector_icons/vector_icons.h"
+#include "ui/gfx/canvas.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/background.h"
 
@@ -16,13 +17,16 @@ ProjectorColorButton::ProjectorColorButton(
     int size,
     float radius,
     const std::u16string& name)
-    : ProjectorButton(callback, name) {
-  // Add the color view.
-  auto* color_view = AddChildView(std::make_unique<View>());
-  color_view->SetBounds((kProjectorButtonSize - size) / 2,
-                        (kProjectorButtonSize - size) / 2, size, size);
-  color_view->SetBackground(CreateBackgroundFromPainter(
-      views::Painter::CreateSolidRoundRectPainter(color, radius)));
+    : ProjectorButton(callback, name), color_(color), size_(size) {}
+
+void ProjectorColorButton::PaintButtonContents(gfx::Canvas* canvas) {
+  cc::PaintFlags flags;
+  flags.setAntiAlias(true);
+  flags.setStyle(cc::PaintFlags::kFill_Style);
+  flags.setColor(color_);
+  const gfx::RectF bounds(GetContentsBounds());
+  canvas->DrawCircle(bounds.CenterPoint(), (kProjectorButtonSize - size_) / 2,
+                     flags);
 }
 
 }  // namespace ash

ash/projector/ui/projector_color_button.h

@@ -24,6 +24,12 @@ class ASH_EXPORT ProjectorColorButton : public ProjectorButton {
   ProjectorColorButton(const ProjectorColorButton&) = delete;
   ProjectorColorButton& operator=(const ProjectorColorButton&) = delete;
   ~ProjectorColorButton() override = default;
+
+  void PaintButtonContents(gfx::Canvas* canvas) override;
+
+ private:
+  SkColor color_;
+  int size_;
 };
 
 }  // namespace ash