[Android] Composited selection handle rendering

content/browser/android/popup_touch_handle_drawable.cc

+// Copyright 2014 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 "content/browser/android/popup_touch_handle_drawable.h"
+
+#include "jni/PopupTouchHandleDrawable_jni.h"
+
+namespace content {
+
+PopupTouchHandleDrawable::PopupTouchHandleDrawable(
+    base::android::ScopedJavaLocalRef<jobject> drawable,
+    float dpi_scale)
+    : dpi_scale_(dpi_scale), drawable_(drawable) {
+  DCHECK(drawable.obj());
+}
+
+PopupTouchHandleDrawable::~PopupTouchHandleDrawable() {
+}
+
+void PopupTouchHandleDrawable::SetEnabled(bool enabled) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  if (enabled)
+    Java_PopupTouchHandleDrawable_show(env, drawable_.obj());
+  else
+    Java_PopupTouchHandleDrawable_hide(env, drawable_.obj());
+}
+
+void PopupTouchHandleDrawable::SetOrientation(
+    TouchHandleOrientation orientation) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  jobject obj = drawable_.obj();
+  switch (orientation) {
+    case TOUCH_HANDLE_LEFT:
+      Java_PopupTouchHandleDrawable_setLeftOrientation(env, obj);
+      break;
+
+    case TOUCH_HANDLE_RIGHT:
+      Java_PopupTouchHandleDrawable_setRightOrientation(env, obj);
+      break;
+
+    case TOUCH_HANDLE_CENTER:
+      Java_PopupTouchHandleDrawable_setCenterOrientation(env, obj);
+      break;
+
+    case TOUCH_HANDLE_ORIENTATION_UNDEFINED:
+      NOTREACHED() << "Invalid touch handle orientation.";
+  };
+}
+
+void PopupTouchHandleDrawable::SetAlpha(float alpha) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_PopupTouchHandleDrawable_setOpacity(env, drawable_.obj(), alpha);
+}
+
+void PopupTouchHandleDrawable::SetFocus(const gfx::PointF& position) {
+  const gfx::PointF position_pix = gfx::ScalePoint(position, dpi_scale_);
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_PopupTouchHandleDrawable_setFocus(
+      env, drawable_.obj(), position_pix.x(), position_pix.y());
+}
+
+void PopupTouchHandleDrawable::SetVisible(bool visible) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_PopupTouchHandleDrawable_setVisible(env, drawable_.obj(), visible);
+}
+
+bool PopupTouchHandleDrawable::ContainsPoint(const gfx::PointF& point) const {
+  const gfx::PointF point_pix = gfx::ScalePoint(point, dpi_scale_);
+  JNIEnv* env = base::android::AttachCurrentThread();
+  return Java_PopupTouchHandleDrawable_containsPoint(
+      env, drawable_.obj(), point_pix.x(), point_pix.y());
+}
+
+// static
+bool PopupTouchHandleDrawable::RegisterPopupTouchHandleDrawable(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace content