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   switch (orientation) {
  37     case ui::TOUCH_HANDLE_LEFT:
  38       Java_PopupTouchHandleDrawable_setLeftOrientation(env, obj);
  39       break;
  40
  41     case ui::TOUCH_HANDLE_RIGHT:
  42       Java_PopupTouchHandleDrawable_setRightOrientation(env, obj);
  43       break;
  44
  45     case ui::TOUCH_HANDLE_CENTER:
  46       Java_PopupTouchHandleDrawable_setCenterOrientation(env, obj);
  47       break;
  48
  49     case ui::TOUCH_HANDLE_ORIENTATION_UNDEFINED:
  50       NOTREACHED() << "Invalid touch handle orientation.";
  51   };
  52 }
  53
  54 void PopupTouchHandleDrawable::SetAlpha(float alpha) {
  55   JNIEnv* env = base::android::AttachCurrentThread();
  56   bool visible = alpha > 0;
  57   Java_PopupTouchHandleDrawable_setVisible(env, drawable_.obj(), visible);
  58 }
  59
  60 void PopupTouchHandleDrawable::SetFocus(const gfx::PointF& position) {
  61   const gfx::PointF position_pix = gfx::ScalePoint(position, dpi_scale_);
  62   JNIEnv* env = base::android::AttachCurrentThread();
  63   Java_PopupTouchHandleDrawable_setFocus(
  64       env, drawable_.obj(), position_pix.x(), position_pix.y());
  65 }
  66
  67 bool PopupTouchHandleDrawable::IntersectsWith(const gfx::RectF& rect) const {
  68   const gfx::RectF rect_pix = gfx::ScaleRect(rect, dpi_scale_);
  69   JNIEnv* env = base::android::AttachCurrentThread();
  70   return Java_PopupTouchHandleDrawable_intersectsWith(env,
  71                                                       drawable_.obj(),
  72                                                       rect_pix.x(),
  73                                                       rect_pix.y(),
  74                                                       rect_pix.width(),
  75                                                       rect_pix.height());
  76 }
  77
  78 // static
  79 bool PopupTouchHandleDrawable::RegisterPopupTouchHandleDrawable(JNIEnv* env) {
  80   return RegisterNativesImpl(env);
  81 }
  82
  83 }  // namespace content