Reland: Move TouchSelectionController from content to ui

ui/base/touch/selection_bound.cc

Index: ui/base/touch/selection_bound.cc
diff --git a/ui/base/touch/selection_bound.cc b/ui/base/touch/selection_bound.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2102ef24c094becd2e83126dbed4120b637e7e2c
--- /dev/null
+++ b/ui/base/touch/selection_bound.cc
@@ -0,0 +1,93 @@
+// 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 <algorithm>
+
+#include "base/macros.h"
+#include "cc/output/viewport_selection_bound.h"
+#include "ui/base/touch/selection_bound.h"
+#include "ui/gfx/geometry/point_conversions.h"
+#include "ui/gfx/rect.h"
+
+namespace ui {
+
+namespace {
+
+SelectionBound::Type ConvertToSelectionBoundType(cc::SelectionBoundType type) {
+  switch (type) {
+    case cc::SELECTION_BOUND_LEFT:
+      return SelectionBound::LEFT;
+    case cc::SELECTION_BOUND_RIGHT:
+      return SelectionBound::RIGHT;
+    case cc::SELECTION_BOUND_CENTER:
+      return SelectionBound::CENTER;
+    case cc::SELECTION_BOUND_EMPTY:
+      return SelectionBound::EMPTY;
+  }
+  NOTREACHED() << "Unknown selection bound type";
+  return SelectionBound::EMPTY;
+}
+
+}  // namespace
+
+SelectionBound::SelectionBound() : type_(EMPTY), visible_(false) {
+}
+
+SelectionBound::SelectionBound(const cc::ViewportSelectionBound& bound)
+    : type_(ConvertToSelectionBoundType(bound.type)),
+      visible_(bound.visible) {
+  if (type_ != EMPTY)
+    SetEdge(bound.edge_top, bound.edge_bottom);
+}
+
+SelectionBound::~SelectionBound() {
+}
+
+void SelectionBound::SetEdgeTop(const gfx::PointF& value) {
+  edge_top_ = value;
+  edge_top_rounded_ = gfx::ToRoundedPoint(value);
+}
+
+void SelectionBound::SetEdgeBottom(const gfx::PointF& value) {
+  edge_bottom_ = value;
+  edge_bottom_rounded_ = gfx::ToRoundedPoint(value);
+}
+
+void SelectionBound::SetEdge(const gfx::PointF& top,
+                             const gfx::PointF& bottom) {
+  SetEdgeTop(top);
+  SetEdgeBottom(bottom);
+}
+
+int SelectionBound::GetHeight() const {
+  return edge_bottom_rounded_.y() - edge_top_rounded_.y();
+}
+
+bool operator==(const SelectionBound& lhs, const SelectionBound& rhs) {
+  return lhs.type() == rhs.type() && lhs.visible() == rhs.visible() &&
+         lhs.edge_top() == rhs.edge_top() &&
+         lhs.edge_bottom() == rhs.edge_bottom();
+}
+
+bool operator!=(const SelectionBound& lhs, const SelectionBound& rhs) {
+  return !(lhs == rhs);
+}
+
+gfx::Rect RectBetweenSelectionBounds(const SelectionBound& b1,
+                                     const SelectionBound& b2) {
+  gfx::Point top_left(b1.edge_top_rounded());
+  top_left.SetToMin(b1.edge_bottom_rounded());
+  top_left.SetToMin(b2.edge_top_rounded());
+  top_left.SetToMin(b2.edge_bottom_rounded());
+
+  gfx::Point bottom_right(b1.edge_top_rounded());
+  bottom_right.SetToMax(b1.edge_bottom_rounded());
+  bottom_right.SetToMax(b2.edge_top_rounded());
+  bottom_right.SetToMax(b2.edge_bottom_rounded());
+
+  gfx::Vector2d diff = bottom_right - top_left;
+  return gfx::Rect(top_left, gfx::Size(diff.x(), diff.y()));
+}
+
+}  // namespace ui