[Remoting Android] New touch feedback texture

remoting/client/gl_cursor_feedback_texture.cc

 // Copyright 2016 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 "remoting/client/gl_cursor_feedback_texture.h"
 
 #include "remoting/client/gl_render_layer.h"
 
 namespace remoting {
 
 namespace {
 
-const int kColorRingsCount = 4;
+const int kColorRingsCount = 5;
 const int kFeedbackTexturePixelDiameter = 512;
 const int kFeedbackTexturePixelRadius = kFeedbackTexturePixelDiameter / 2;
 
 // RGBA8888 colors. From inside to outside.
 const uint8_t kFeedbackRingColors[kColorRingsCount]
                                  [GlRenderLayer::kBytesPerPixel] = {
-                                     {0, 0, 0, 0},  // transparent black
-                                     {0xff, 0xff, 0xff, 0xff},  // white
-                                     {0, 0, 0, 0xff},           // black
-                                     {0, 0, 0, 0}  // transparent black
+                                     {0x0, 0x0, 0x0, 0x7f},  // Black
+                                     {0x0, 0x0, 0x0, 0x7f},  // Black
+                                     {0xff, 0xff, 0xff, 0x7f},  // White
+                                     {0xff, 0xff, 0xff, 0x7f},  // White
+                                     {0xff, 0xff, 0xff, 0}  // Transparent White
 };
 
-const float kFeedbackRadiusStops[kColorRingsCount] = {0.0f, 0.8f, 0.9f, 1.0f};
+const float kFeedbackRadiusStops[kColorRingsCount] =
+    {0.0f, 0.85f, 0.9f, 0.95f, 1.0f};
 
 uint32_t GetColorByRadius(float radius) {
   int ring_index = kColorRingsCount - 1;
   // Find first radius stop that is not smaller than current radius.
   while (radius < kFeedbackRadiusStops[ring_index] && ring_index >= 0) {
     ring_index--;
   }
 
   if (ring_index < 0) {
     NOTREACHED();
@@ skipping 61 matching lines @@
 
 GlCursorFeedbackTexture::GlCursorFeedbackTexture() {
   texture_.resize(kTextureWidth * kTextureWidth *
                   GlRenderLayer::kBytesPerPixel);
   FillFeedbackTexture(reinterpret_cast<uint32_t*>(texture_.data()));
 }
 
 GlCursorFeedbackTexture::~GlCursorFeedbackTexture() {}
 
 }  // namespace remoting