cros/ash: If the partial magnifier is active, do not consume input events if over palette views.

ash/common/system/chromeos/palette/palette_utils.cc

 // Copyright 2016 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.
 
 #include "ash/common/system/chromeos/palette/palette_utils.h"
 
 #include "ash/common/ash_switches.h"
+#include "ash/common/shelf/shelf_widget.h"
+#include "ash/common/shelf/wm_shelf.h"
+#include "ash/common/system/chromeos/palette/palette_tray.h"
+#include "ash/common/system/status_area_widget.h"
+#include "ash/common/wm_root_window_controller.h"
+#include "ash/common/wm_shell.h"
+#include "ash/common/wm_window.h"
 #include "base/command_line.h"
+#include "ui/events/event.h"
+#include "ui/gfx/geometry/point.h"
 
 namespace ash {
 
 bool IsPaletteFeatureEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kAshEnablePalette);
 }
 
 bool ArePaletteExperimentalFeaturesEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kAshEnableExperimentalPaletteFeatures);
 }
 
+bool PaletteContainsEvent(ui::LocatedEvent* event) {
+  ash::WmWindow* primary = ash::WmShell::Get()->GetPrimaryRootWindow();

[James Cook, 2016/09/01 23:16:02]

no need for ash:: in this function

[jdufault, 2016/09/02 20:20:38]

Done.

+
+  for (ash::WmWindow* window : ash::WmShell::Get()->GetAllRootWindows()) {

[jdufault, 2016/09/01 22:31:31]

Is there a better way to figure out if an event is targeting a given view?

[James Cook, 2016/09/01 23:16:02]

This seems reasonable to me.

+    // Convert point so that it is relative to the primary display, which is how
+    // the view screen coordinates (for PaletteTray) are setup. Normally
+    // root_location() is relative to the window that generated it.
+    gfx::Point point =
+        window->ConvertPointToTarget(primary, event->root_location());
+
+    ash::WmShelf* shelf = window->GetRootWindowController()->GetShelf();

[James Cook, 2016/09/01 23:16:02]

WmShelf::ForWindow() is useful here, lets you skip wm_root_window_controller.h
include

[jdufault, 2016/09/02 20:20:38]

Done.

+    ash::PaletteTray* palette_tray =
+        shelf->shelf_widget()->status_area_widget()->palette_tray();

[James Cook, 2016/09/01 23:16:02]

nit: shelf->GetStatusAreaWidget() will let you skip a shelf_widget.h include

[jdufault, 2016/09/02 20:20:38]

Done.

+    if (palette_tray && palette_tray->ContainsPointInScreen(point))
+      return true;
+  }
+
+  return false;
+}
+
 }  // namespace ash