blimp: Add support for input handling

content/browser/renderer_host/input/motion_event_android.cc

Index: content/browser/renderer_host/input/motion_event_android.cc
diff --git a/content/browser/renderer_host/input/motion_event_android.cc b/content/browser/renderer_host/input/motion_event_android.cc
deleted file mode 100644
index 4d30a3f13bb4a268aa419e104c4eda0afda4ef16..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/input/motion_event_android.cc
+++ /dev/null
@@ -1,348 +0,0 @@
-// 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/renderer_host/input/motion_event_android.h"
-
-#include <android/input.h>
-
-#include <cmath>
-
-#include "base/android/jni_android.h"
-#include "jni/MotionEvent_jni.h"
-#include "ui/events/base_event_utils.h"
-#include "ui/events/event_constants.h"
-
-using base::android::AttachCurrentThread;
-using namespace JNI_MotionEvent;
-
-namespace content {
-namespace {
-
-MotionEventAndroid::Action FromAndroidAction(int android_action) {
-  switch (android_action) {
-    case ACTION_DOWN:
-      return MotionEventAndroid::ACTION_DOWN;
-    case ACTION_UP:
-      return MotionEventAndroid::ACTION_UP;
-    case ACTION_MOVE:
-      return MotionEventAndroid::ACTION_MOVE;
-    case ACTION_CANCEL:
-      return MotionEventAndroid::ACTION_CANCEL;
-    case ACTION_POINTER_DOWN:
-      return MotionEventAndroid::ACTION_POINTER_DOWN;
-    case ACTION_POINTER_UP:
-      return MotionEventAndroid::ACTION_POINTER_UP;
-    default:
-      NOTREACHED() << "Invalid Android MotionEvent type for gesture detection: "
-                   << android_action;
-  };
-  return MotionEventAndroid::ACTION_CANCEL;
-}
-
-MotionEventAndroid::ToolType FromAndroidToolType(int android_tool_type) {
-  switch (android_tool_type) {
-    case TOOL_TYPE_UNKNOWN:
-      return MotionEventAndroid::TOOL_TYPE_UNKNOWN;
-    case TOOL_TYPE_FINGER:
-      return MotionEventAndroid::TOOL_TYPE_FINGER;
-    case TOOL_TYPE_STYLUS:
-      return MotionEventAndroid::TOOL_TYPE_STYLUS;
-    case TOOL_TYPE_MOUSE:
-      return MotionEventAndroid::TOOL_TYPE_MOUSE;
-    case TOOL_TYPE_ERASER:
-      return MotionEventAndroid::TOOL_TYPE_ERASER;
-    default:
-      NOTREACHED() << "Invalid Android MotionEvent tool type: "
-                   << android_tool_type;
-  };
-  return MotionEventAndroid::TOOL_TYPE_UNKNOWN;
-}
-
-int FromAndroidButtonState(int button_state) {
-  int result = 0;
-  if ((button_state & BUTTON_BACK) != 0)
-    result |= MotionEventAndroid::BUTTON_BACK;
-  if ((button_state & BUTTON_FORWARD) != 0)
-    result |= MotionEventAndroid::BUTTON_FORWARD;
-  if ((button_state & BUTTON_PRIMARY) != 0)
-    result |= MotionEventAndroid::BUTTON_PRIMARY;
-  if ((button_state & BUTTON_SECONDARY) != 0)
-    result |= MotionEventAndroid::BUTTON_SECONDARY;
-  if ((button_state & BUTTON_TERTIARY) != 0)
-    result |= MotionEventAndroid::BUTTON_TERTIARY;
-  if ((button_state & BUTTON_STYLUS_PRIMARY) != 0)
-    result |= MotionEventAndroid::BUTTON_STYLUS_PRIMARY;
-  if ((button_state & BUTTON_STYLUS_SECONDARY) != 0)
-    result |= MotionEventAndroid::BUTTON_STYLUS_SECONDARY;
-  return result;
-}
-
-int FromAndroidMetaState(int meta_state) {
-  int flags = ui::EF_NONE;
-  if ((meta_state & AMETA_SHIFT_ON) != 0)
-    flags |= ui::EF_SHIFT_DOWN;
-  if ((meta_state & AMETA_CTRL_ON) != 0)
-    flags |= ui::EF_CONTROL_DOWN;
-  if ((meta_state & AMETA_ALT_ON) != 0)
-    flags |= ui::EF_ALT_DOWN;
-  if ((meta_state & AMETA_META_ON) != 0)
-    flags |= ui::EF_COMMAND_DOWN;
-  if ((meta_state & AMETA_CAPS_LOCK_ON) != 0)
-    flags |= ui::EF_CAPS_LOCK_DOWN;
-  return flags;
-}
-
-base::TimeTicks FromAndroidTime(int64 time_ms) {
-  return base::TimeTicks() + base::TimeDelta::FromMilliseconds(time_ms);
-}
-
-float ToValidFloat(float x) {
-  if (std::isnan(x))
-    return 0.f;
-
-  // Wildly large orientation values have been observed in the wild after device
-  // rotation. There's not much we can do in that case other than simply
-  // sanitize results beyond an absurd and arbitrary threshold.
-  if (std::abs(x) > 1e5f)
-    return 0.f;
-
-  return x;
-}
-
-size_t ToValidHistorySize(jint history_size, ui::MotionEvent::Action action) {
-  DCHECK_GE(history_size, 0);
-  // While the spec states that only ACTION_MOVE events should contain
-  // historical entries, it's possible that an embedder could repurpose an
-  // ACTION_MOVE event into a different kind of event. In that case, the
-  // historical values are meaningless, and should not be exposed.
-  if (action != ui::MotionEvent::ACTION_MOVE)
-    return 0;
-  return history_size;
-}
-
-}  // namespace
-
-MotionEventAndroid::Pointer::Pointer(jint id,
-                                     jfloat pos_x_pixels,
-                                     jfloat pos_y_pixels,
-                                     jfloat touch_major_pixels,
-                                     jfloat touch_minor_pixels,
-                                     jfloat orientation_rad,
-                                     jint tool_type)
-    : id(id),
-      pos_x_pixels(pos_x_pixels),
-      pos_y_pixels(pos_y_pixels),
-      touch_major_pixels(touch_major_pixels),
-      touch_minor_pixels(touch_minor_pixels),
-      orientation_rad(orientation_rad),
-      tool_type(tool_type) {
-}
-
-MotionEventAndroid::CachedPointer::CachedPointer()
-    : id(0),
-      touch_major(0),
-      touch_minor(0),
-      orientation(0),
-      tool_type(TOOL_TYPE_UNKNOWN) {
-}
-
-MotionEventAndroid::MotionEventAndroid(float pix_to_dip,
-                                       JNIEnv* env,
-                                       jobject event,
-                                       jlong time_ms,
-                                       jint android_action,
-                                       jint pointer_count,
-                                       jint history_size,
-                                       jint action_index,
-                                       jint android_button_state,
-                                       jint meta_state,
-                                       jfloat raw_offset_x_pixels,
-                                       jfloat raw_offset_y_pixels,
-                                       const Pointer& pointer0,
-                                       const Pointer& pointer1)
-    : pix_to_dip_(pix_to_dip),
-      cached_time_(FromAndroidTime(time_ms)),
-      cached_action_(FromAndroidAction(android_action)),
-      cached_pointer_count_(pointer_count),
-      cached_history_size_(ToValidHistorySize(history_size, cached_action_)),
-      cached_action_index_(action_index),
-      cached_button_state_(FromAndroidButtonState(android_button_state)),
-      cached_flags_(FromAndroidMetaState(meta_state)),
-      cached_raw_position_offset_(ToDips(raw_offset_x_pixels),
-                                  ToDips(raw_offset_y_pixels)),
-      unique_event_id_(ui::GetNextTouchEventId()) {
-  DCHECK_GT(pointer_count, 0);
-
-  event_.Reset(env, event);
-  if (cached_pointer_count_ > MAX_POINTERS_TO_CACHE || cached_history_size_ > 0)
-    DCHECK(event_.obj());
-
-  cached_pointers_[0] = FromAndroidPointer(pointer0);
-  cached_pointers_[1] = FromAndroidPointer(pointer1);
-}
-
-MotionEventAndroid::~MotionEventAndroid() {
-}
-
-uint32 MotionEventAndroid::GetUniqueEventId() const {
-  return unique_event_id_;
-}
-
-MotionEventAndroid::Action MotionEventAndroid::GetAction() const {
-  return cached_action_;
-}
-
-int MotionEventAndroid::GetActionIndex() const {
-  DCHECK(cached_action_ == ACTION_POINTER_UP ||
-         cached_action_ == ACTION_POINTER_DOWN)
-      << "Invalid action for GetActionIndex(): " << cached_action_;
-  DCHECK_GE(cached_action_index_, 0);
-  DCHECK_LT(cached_action_index_, static_cast<int>(cached_pointer_count_));
-  return cached_action_index_;
-}
-
-size_t MotionEventAndroid::GetPointerCount() const {
-  return cached_pointer_count_;
-}
-
-int MotionEventAndroid::GetPointerId(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].id;
-  return Java_MotionEvent_getPointerId(
-      AttachCurrentThread(), event_.obj(), pointer_index);
-}
-
-float MotionEventAndroid::GetX(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].position.x();
-  return ToDips(Java_MotionEvent_getXF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-float MotionEventAndroid::GetY(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].position.y();
-  return ToDips(Java_MotionEvent_getYF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-float MotionEventAndroid::GetRawX(size_t pointer_index) const {
-  return GetX(pointer_index) + cached_raw_position_offset_.x();
-}
-
-float MotionEventAndroid::GetRawY(size_t pointer_index) const {
-  return GetY(pointer_index) + cached_raw_position_offset_.y();
-}
-
-float MotionEventAndroid::GetTouchMajor(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].touch_major;
-  return ToDips(Java_MotionEvent_getTouchMajorF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-float MotionEventAndroid::GetTouchMinor(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].touch_minor;
-  return ToDips(Java_MotionEvent_getTouchMinorF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-float MotionEventAndroid::GetOrientation(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].orientation;
-  return ToValidFloat(Java_MotionEvent_getOrientationF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-float MotionEventAndroid::GetPressure(size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  // Note that this early return is a special case exercised only in testing, as
-  // caching the pressure values is not a worthwhile optimization (they're
-  // accessed at most once per event instance).
-  if (!event_.obj())
-    return 0.f;
-  return Java_MotionEvent_getPressureF_I(
-      AttachCurrentThread(), event_.obj(), pointer_index);
-}
-
-base::TimeTicks MotionEventAndroid::GetEventTime() const {
-  return cached_time_;
-}
-
-size_t MotionEventAndroid::GetHistorySize() const {
-  return cached_history_size_;
-}
-
-base::TimeTicks MotionEventAndroid::GetHistoricalEventTime(
-    size_t historical_index) const {
-  return FromAndroidTime(Java_MotionEvent_getHistoricalEventTime(
-      AttachCurrentThread(), event_.obj(), historical_index));
-}
-
-float MotionEventAndroid::GetHistoricalTouchMajor(
-    size_t pointer_index,
-    size_t historical_index) const {
-  return ToDips(Java_MotionEvent_getHistoricalTouchMajorF_I_I(
-      AttachCurrentThread(), event_.obj(), pointer_index, historical_index));
-}
-
-float MotionEventAndroid::GetHistoricalX(size_t pointer_index,
-                                         size_t historical_index) const {
-  return ToDips(Java_MotionEvent_getHistoricalXF_I_I(
-      AttachCurrentThread(), event_.obj(), pointer_index, historical_index));
-}
-
-float MotionEventAndroid::GetHistoricalY(size_t pointer_index,
-                                         size_t historical_index) const {
-  return ToDips(Java_MotionEvent_getHistoricalYF_I_I(
-      AttachCurrentThread(), event_.obj(), pointer_index, historical_index));
-}
-
-ui::MotionEvent::ToolType MotionEventAndroid::GetToolType(
-    size_t pointer_index) const {
-  DCHECK_LT(pointer_index, cached_pointer_count_);
-  if (pointer_index < MAX_POINTERS_TO_CACHE)
-    return cached_pointers_[pointer_index].tool_type;
-  return FromAndroidToolType(Java_MotionEvent_getToolType(
-      AttachCurrentThread(), event_.obj(), pointer_index));
-}
-
-int MotionEventAndroid::GetButtonState() const {
-  return cached_button_state_;
-}
-
-int MotionEventAndroid::GetFlags() const {
-  return cached_flags_;
-}
-
-float MotionEventAndroid::ToDips(float pixels) const {
-  return pixels * pix_to_dip_;
-}
-
-MotionEventAndroid::CachedPointer MotionEventAndroid::FromAndroidPointer(
-    const Pointer& pointer) const {
-  CachedPointer result;
-  result.id = pointer.id;
-  result.position =
-      gfx::PointF(ToDips(pointer.pos_x_pixels), ToDips(pointer.pos_y_pixels));
-  result.touch_major = ToDips(pointer.touch_major_pixels);
-  result.touch_minor = ToDips(pointer.touch_minor_pixels);
-  result.orientation = ToValidFloat(pointer.orientation_rad);
-  result.tool_type = FromAndroidToolType(pointer.tool_type);
-  return result;
-}
-
-// static
-bool MotionEventAndroid::RegisterMotionEventAndroid(JNIEnv* env) {
-  return JNI_MotionEvent::RegisterNativesImpl(env);
-}
-
-}  // namespace content