Refactor VR Shell Input. Locks input to click/scroll targets.

chrome/browser/android/vr_shell/textures/close_button_texture.cc

+// Copyright 2017 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 "chrome/browser/android/vr_shell/textures/close_button_texture.h"
+
+#include "cc/paint/skia_paint_canvas.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/vector2d.h"
+#include "ui/gfx/paint_vector_icon.h"
+#include "ui/gfx/vector_icon_types.h"
+#include "ui/vector_icons/vector_icons.h"
+
+namespace vr_shell {
+
+namespace {
+
+const SkColor kBackgroundColor = SK_ColorWHITE;
+const SkColor kBackgroundColorHover = 0xFFE5E5E5;
+const SkColor kBackgroundColorDown = 0xFFD5D5D5;
+const SkColor kForegroundColor = 0xFF444444;
+constexpr float kIconScaleFactor = 0.75;
+
+}  // namespace
+
+CloseButtonTexture::CloseButtonTexture() = default;
+
+CloseButtonTexture::~CloseButtonTexture() = default;
+
+void CloseButtonTexture::Draw(SkCanvas* sk_canvas,
+                              const gfx::Size& texture_size) {
+  DCHECK_EQ(texture_size.height(), texture_size.width());
+  cc::SkiaPaintCanvas paint_canvas(sk_canvas);
+  gfx::Canvas gfx_canvas(&paint_canvas, 1.0f);
+  gfx::Canvas* canvas = &gfx_canvas;
+
+  size_.set_height(texture_size.height());
+  size_.set_width(texture_size.width());
+
+  cc::PaintFlags flags;
+  SkColor color =
+      (GetDrawFlags() & FLAG_HOVER) ? kBackgroundColorHover : kBackgroundColor;
+  color = (GetDrawFlags() & FLAG_DOWN) ? kBackgroundColorDown : color;
+  flags.setColor(color);
+  canvas->DrawCircle(gfx::PointF(size_.width() / 2, size_.height() / 2),
+                     size_.width() / 2, flags);
+
+  canvas->Save();
+  canvas->Translate(gfx::Vector2d(size_.height() * (1 - kIconScaleFactor) / 2,
+                                  size_.height() * (1 - kIconScaleFactor) / 2));
+  PaintVectorIcon(canvas, ui::kCloseIcon, size_.height() * kIconScaleFactor,
+                  kForegroundColor);
+  canvas->Restore();
+}
+
+gfx::Size CloseButtonTexture::GetPreferredTextureSize(int maximum_width) const {
+  return gfx::Size(maximum_width, maximum_width);
+}
+
+gfx::SizeF CloseButtonTexture::GetDrawnSize() const {
+  return size_;
+}
+
+}  // namespace vr_shell