[Android] Select text when stylus first button is pressed.

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 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/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/sys_utils.h"
 #include "base/basictypes.h"
@@ skipping 524 matching lines @@
 void RenderWidgetHostViewAndroid::OnSmartClipDataExtracted(
     const base::string16& result) {
   // Custom serialization over IPC isn't allowed normally for security reasons.
   // Since this feature is only used in (single-process) WebView, there are no
   // security issues. Enforce that it's only called in single process mode.
   CHECK(RenderProcessHost::run_renderer_in_process());
   if (content_view_core_)
     content_view_core_->OnSmartClipDataExtracted(result);
 }
 
+bool RenderWidgetHostViewAndroid::ShouldConvertToMouseEvent(
+    const ui::MotionEvent& event) {
+  // TODO(changwan)
+  return true;
+}
+
 bool RenderWidgetHostViewAndroid::OnTouchEvent(
     const ui::MotionEvent& event) {
   if (!host_)
     return false;
 
   if (!gesture_provider_.OnTouchEvent(event))
     return false;
 
+  if (ShouldConvertToMouseEvent(event)) {

[jdduke (slow), 2014/06/19 15:10:11]

Ah, yeah, so we would definitely need to move this check *before* the call to
|if (!gesture_provider_.OnTouchEvent(event))|, and use a separate gesture
detector altogether.

[jdduke (slow), 2014/06/20 02:14:27]

We'll probably want logic along the lines of:

if (event.GetAction() == ACTION_DOWN && ShouldConvertToMouseEvent(event))
  convert_touch_sequence_to_mouse_ = true;

if (convert_touch_sequence_to_mouse_) {
  SendMouseEvent(CreateWebMouseEventFromMotionEvent(event));
  gesture_provider_.OnTouchEventAck(false);
  if (event.GetAction() == ACTION_UP || event.GetAction() == ACTION_CANCEL)
    convert_touch_sequence_to_mouse_ = false;
  return true;
}

[jdduke (slow), 2014/06/20 02:23:39]

Actually this should probably be:

if (event.GetAction() == ACTION_DOWN)
  convert_touch_sequence_to_mouse_ = ShouldConvertToMouseEvent(event);

[Changwan Ryu, 2014/06/20 08:19:53]

Done.

[Changwan Ryu, 2014/06/20 08:19:53]

Done.

[Changwan Ryu, 2014/06/20 08:19:53]

Moved it up and added a TODO.

+    SendMouseEvent(CreateWebMouseEventFromMotionEvent(event));
+    return true;
+  }
+
   // Short-circuit touch forwarding if no touch handlers exist.
   if (!host_->ShouldForwardTouchEvent()) {
     const bool event_consumed = false;
     gesture_provider_.OnTouchEventAck(event_consumed);
     return true;
   }
 
   SendTouchEvent(CreateWebTouchEventFromMotionEvent(event));
   return true;
 }
@@ skipping 709 matching lines @@
 
 void RenderWidgetHostViewAndroid::RunAckCallbacks() {
   while (!ack_callbacks_.empty()) {
     ack_callbacks_.front().Run();
     ack_callbacks_.pop();
   }
 }
 
 void RenderWidgetHostViewAndroid::OnGestureEvent(
     const ui::GestureEventData& gesture) {
   SendGestureEvent(CreateWebGestureEventFromGestureEventData(gesture));

[jdduke (slow), 2014/06/20 02:14:27]

Then you can add a check here to drop all gestures except for long press:

if (convert_touch_sequence_to_mouse_ && gesture.type() != ET_GESTURE_LONG_PRESS)
  return;
SendGestureEvent(...);

[Changwan Ryu, 2014/06/20 08:19:53]

I don't have access to gesture variable. Let me handle this in the next CL.

 }
 
 void RenderWidgetHostViewAndroid::OnCompositingDidCommit() {
   RunAckCallbacks();
 }
 
 void RenderWidgetHostViewAndroid::OnDetachCompositor() {
   DCHECK(content_view_core_);
   DCHECK(!using_synchronous_compositor_);
   RunAckCallbacks();
@@ skipping 143 matching lines @@
   results->availableRect = display.work_area();
   results->deviceScaleFactor = display.device_scale_factor();
   results->orientationAngle = display.RotationAsDegree();
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content