Support for Adaptive Handle Orientation

content/browser/android/composited_touch_handle_drawable.cc

Index: content/browser/android/composited_touch_handle_drawable.cc
diff --git a/content/browser/android/composited_touch_handle_drawable.cc b/content/browser/android/composited_touch_handle_drawable.cc
index 91a019eba89157780bd68ed5d82c979b050d0c88..9ce0c08cd82588e37837fe2837a7da8fb46a3184 100644
--- a/content/browser/android/composited_touch_handle_drawable.cc
+++ b/content/browser/android/composited_touch_handle_drawable.cc
@@ -10,6 +10,7 @@
 #include "cc/layers/ui_resource_layer.h"
 #include "jni/HandleViewResources_jni.h"
 #include "ui/gfx/android/java_bitmap.h"
+#include "ui/gfx/skbitmap_operations.h"
 
 namespace content {
 
@@ -44,10 +45,19 @@ class HandleResources {
         Java_HandleViewResources_getRightHandleBitmap(env, context));
     center_bitmap_ = CreateSkBitmapFromJavaBitmap(
         Java_HandleViewResources_getCenterHandleBitmap(env, context));
+    left_inverted_bitmap_ = SkBitmapOperations::Rotate(
+        right_bitmap_, SkBitmapOperations::ROTATION_180_CW);
+    right_inverted_bitmap_ = SkBitmapOperations::Rotate(
+        left_bitmap_, SkBitmapOperations::ROTATION_180_CW);
+    center_inverted_bitmap_ = SkBitmapOperations::Rotate(
+        center_bitmap_, SkBitmapOperations::ROTATION_180_CW);
 
     left_bitmap_.setImmutable();
     right_bitmap_.setImmutable();
     center_bitmap_.setImmutable();
+    left_inverted_bitmap_.setImmutable();
+    right_inverted_bitmap_.setImmutable();
+    center_inverted_bitmap_.setImmutable();
   }
 
   const SkBitmap& GetBitmap(ui::TouchHandleOrientation orientation) {
@@ -59,6 +69,20 @@ class HandleResources {
         return right_bitmap_;
       case ui::TouchHandleOrientation::CENTER:
         return center_bitmap_;
+      case ui::TouchHandleOrientation::LEFT_INVERTED:
+        return left_inverted_bitmap_;
+      case ui::TouchHandleOrientation::RIGHT_INVERTED:
+        return right_inverted_bitmap_;
+      case ui::TouchHandleOrientation::LEFT_FLIPPED:
+        return right_bitmap_;
+      case ui::TouchHandleOrientation::RIGHT_FLIPPED:
+        return left_bitmap_;
+      case ui::TouchHandleOrientation::LEFT_FLIPPED_INVERTED:
+        return right_inverted_bitmap_;
+      case ui::TouchHandleOrientation::RIGHT_FLIPPED_INVERTED:
+        return left_inverted_bitmap_;
+      case ui::TouchHandleOrientation::CENTER_INVERTED:
+        return center_inverted_bitmap_;
       case ui::TouchHandleOrientation::UNDEFINED:
         NOTREACHED() << "Invalid touch handle orientation.";
     };
@@ -69,6 +93,9 @@ class HandleResources {
   SkBitmap left_bitmap_;
   SkBitmap right_bitmap_;
   SkBitmap center_bitmap_;
+  SkBitmap left_inverted_bitmap_;
+  SkBitmap right_inverted_bitmap_;
+  SkBitmap center_inverted_bitmap_;
   bool loaded_;
 
   DISALLOW_COPY_AND_ASSIGN(HandleResources);
@@ -120,6 +147,32 @@ void CompositedTouchHandleDrawable::SetOrientation(
     case ui::TouchHandleOrientation::CENTER:
       focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.5f, 0);
       break;
+    case ui::TouchHandleOrientation::LEFT_INVERTED:
+      focal_offset_from_origin_ =
+          gfx::Vector2dF(bitmap.width() * 0.75f, bitmap.height());
+      break;
+    case ui::TouchHandleOrientation::RIGHT_INVERTED:
+      focal_offset_from_origin_ =
+          gfx::Vector2dF(bitmap.width() * 0.25f, bitmap.height());
+      break;
+    case ui::TouchHandleOrientation::LEFT_FLIPPED:
+      focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.25f, 0);
+      break;
+    case ui::TouchHandleOrientation::RIGHT_FLIPPED:
+      focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.75f, 0);
+      break;
+    case ui::TouchHandleOrientation::LEFT_FLIPPED_INVERTED:
+      focal_offset_from_origin_ =
+          gfx::Vector2dF(bitmap.width() * 0.25f, bitmap.height());
+      break;
+    case ui::TouchHandleOrientation::RIGHT_FLIPPED_INVERTED:
+      focal_offset_from_origin_ =
+          gfx::Vector2dF(bitmap.width() * 0.75f, bitmap.height());
+      break;
+    case ui::TouchHandleOrientation::CENTER_INVERTED:
+      focal_offset_from_origin_ =
+          gfx::Vector2dF(bitmap.width() * 0.5f, bitmap.height());
+      break;
     case ui::TouchHandleOrientation::UNDEFINED:
       NOTREACHED() << "Invalid touch handle orientation.";
       break;