content/browser/android/popup_touch_handle_drawable.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/android/popup_touch_handle_drawable.h"
   6
   7 #include "jni/PopupTouchHandleDrawable_jni.h"
   8
   9 namespace content {
  10
  11 PopupTouchHandleDrawable::PopupTouchHandleDrawable(
  12     base::android::ScopedJavaLocalRef<jobject> drawable,
  13     float dpi_scale)
  14     : dpi_scale_(dpi_scale), drawable_(drawable) {
  15   DCHECK(drawable.obj());
  16 }
  17
  18 PopupTouchHandleDrawable::~PopupTouchHandleDrawable() {
  19   // Explicitly disabling ensures that any external references to the Java
  20   // object are cleared, allowing it to be GC'ed in a timely fashion.
  21   SetEnabled(false);
  22 }
  23
  24 void PopupTouchHandleDrawable::SetEnabled(bool enabled) {
  25   JNIEnv* env = base::android::AttachCurrentThread();
  26   if (enabled)
  27     Java_PopupTouchHandleDrawable_show(env, drawable_.obj());
  28   else
  29     Java_PopupTouchHandleDrawable_hide(env, drawable_.obj());
  30 }
  31
  32 void PopupTouchHandleDrawable::SetOrientation(
  33     ui::TouchHandleOrientation orientation) {
  34   JNIEnv* env = base::android::AttachCurrentThread();
  35   jobject obj = drawable_.obj();
  36   Java_PopupTouchHandleDrawable_setOrientation(env, obj,
  37                                                static_cast<int>(orientation));
  38 }
  39
  40 void PopupTouchHandleDrawable::SetAlpha(float alpha) {
  41   JNIEnv* env = base::android::AttachCurrentThread();
  42   bool visible = alpha > 0;
  43   Java_PopupTouchHandleDrawable_setVisible(env, drawable_.obj(), visible);
  44 }
  45
  46 void PopupTouchHandleDrawable::SetFocus(const gfx::PointF& position) {
  47   const gfx::PointF position_pix = gfx::ScalePoint(position, dpi_scale_);
  48   JNIEnv* env = base::android::AttachCurrentThread();
  49   Java_PopupTouchHandleDrawable_setFocus(
  50       env, drawable_.obj(), position_pix.x(), position_pix.y());
  51 }
  52
  53 gfx::RectF PopupTouchHandleDrawable::GetVisibleBounds() const {
  54   JNIEnv* env = base::android::AttachCurrentThread();
  55   gfx::RectF unscaled_rect(
  56       Java_PopupTouchHandleDrawable_getPositionX(env, drawable_.obj()),
  57       Java_PopupTouchHandleDrawable_getPositionY(env, drawable_.obj()),
  58       Java_PopupTouchHandleDrawable_getVisibleWidth(env, drawable_.obj()),
  59       Java_PopupTouchHandleDrawable_getVisibleHeight(env, drawable_.obj()));
  60   return gfx::ScaleRect(unscaled_rect, 1.f / dpi_scale_);
  61 }
  62
  63 // static
  64 bool PopupTouchHandleDrawable::RegisterPopupTouchHandleDrawable(JNIEnv* env) {
  65   return RegisterNativesImpl(env);
  66 }
  67
  68 }  // namespace content