[Remoting Android] Use floating point coords for rendering the cursor

remoting/client/jni/jni_gl_display_handler.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/jni/jni_gl_display_handler.h"
 
 #include <android/native_window_jni.h>
 #include <array>
 
 #include "base/android/jni_android.h"
@@ skipping 97 matching lines @@
   DCHECK(env->GetArrayLength(jmatrix.obj()) == 9);
   std::array<float, 9> matrix;
   env->GetFloatArrayRegion(jmatrix.obj(), 0, 9, matrix.data());
   ui_task_poster_->AddTask(base::Bind(&GlRenderer::OnPixelTransformationChanged,
                                       renderer_.GetWeakPtr(), matrix));
 }
 
 void JniGlDisplayHandler::OnCursorPixelPositionChanged(
     JNIEnv* env,
     const base::android::JavaParamRef<jobject>& caller,
-    int x,
-    int y) {
+    float x,
+    float y) {
   DCHECK(runtime_->ui_task_runner()->BelongsToCurrentThread());
   ui_task_poster_->AddTask(base::Bind(&GlRenderer::OnCursorMoved,
                                       renderer_.GetWeakPtr(), x, y));
 }
 
 void JniGlDisplayHandler::OnCursorVisibilityChanged(
     JNIEnv* env,
     const base::android::JavaParamRef<jobject>& caller,
     bool visible) {
   DCHECK(runtime_->ui_task_runner()->BelongsToCurrentThread());
   ui_task_poster_->AddTask(base::Bind(&GlRenderer::OnCursorVisibilityChanged,
                                       renderer_.GetWeakPtr(), visible));
 }
 
 void JniGlDisplayHandler::OnCursorInputFeedback(
     JNIEnv* env,
     const base::android::JavaParamRef<jobject>& caller,
-    int x,
-    int y,
+    float x,
+    float y,
     float diameter) {
   DCHECK(runtime_->ui_task_runner()->BelongsToCurrentThread());
   ui_task_poster_->AddTask(base::Bind(&GlRenderer::OnCursorInputFeedback,
                                       renderer_.GetWeakPtr(), x, y, diameter));
 }
 
 bool JniGlDisplayHandler::CanRenderFrame() {
   DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
   return egl_context_ && egl_context_->IsWindowBound();
 }
@@ skipping 50 matching lines @@
 // static
 void JniGlDisplayHandler::ChangeCanvasSizeOnUiThread(
     base::android::ScopedJavaGlobalRef<jobject> java_display,
     int width,
     int height) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_GlDisplay_changeCanvasSize(env, java_display, width, height);
 }
 
 }  // namespace remoting