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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_SELECTION_BOUND_H_
#define UI_GFX_SELECTION_BOUND_H_
#include "base/component_export.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
namespace gfx {
class Rect;
class RectF;
// Bound of a selection end-point.
class COMPONENT_EXPORT(GFX) SelectionBound {
public:
enum Type {
// The LEFT and RIGHT hand side of a selection bound.
LEFT,
RIGHT,
// Used when a selection is zero width (a caret) and the selection handle
// should be shown.
CENTER,
// Used when a selection is zero width (a caret), but the selection handle
// should not be shown.
HIDDEN,
// No selection.
EMPTY,
LAST = EMPTY
};
SelectionBound();
SelectionBound(const SelectionBound& other);
~SelectionBound();
Type type() const { return type_; }
void set_type(Type value) { type_ = value; }
const gfx::PointF& edge_start() const { return edge_start_; }
const gfx::PointF& visible_edge_start() const { return visible_edge_start_; }
const gfx::Point& edge_start_rounded() const { return edge_start_rounded_; }
void SetEdgeStart(const gfx::PointF& value);
void SetVisibleEdgeStart(const gfx::PointF& value);
const gfx::PointF& edge_end() const { return edge_end_; }
const gfx::PointF& visible_edge_end() const { return visible_edge_end_; }
const gfx::Point& edge_end_rounded() const { return edge_end_rounded_; }
void SetEdgeEnd(const gfx::PointF& value);
void SetVisibleEdgeEnd(const gfx::PointF& value);
void SetEdge(const gfx::PointF& start, const gfx::PointF& end);
void SetVisibleEdge(const gfx::PointF& start, const gfx::PointF& end);
bool visible() const { return visible_; }
void set_visible(bool value) { visible_ = value; }
// Returns the vertical difference between rounded start and end.
int GetHeight() const;
// Returns whether the type is one that should show a selection handle.
bool HasHandle() const { return !(type_ == EMPTY || type_ == HIDDEN); }
std::string ToString() const;
private:
Type type_;
// The actual bounds of a selection end-point mgiht be invisible for
// occlusion.
gfx::PointF edge_start_;
gfx::PointF edge_end_;
// The visible bounds of a selection, which are equal to the above, when there
// is no occlusion.
gfx::PointF visible_edge_start_;
gfx::PointF visible_edge_end_;
gfx::Point edge_start_rounded_;
gfx::Point edge_end_rounded_;
bool visible_;
};
COMPONENT_EXPORT(GFX)
bool operator==(const SelectionBound& lhs, const SelectionBound& rhs);
COMPONENT_EXPORT(GFX)
gfx::Rect RectBetweenSelectionBounds(const SelectionBound& b1,
const SelectionBound& b2);
COMPONENT_EXPORT(GFX)
gfx::RectF RectFBetweenSelectionBounds(const SelectionBound& b1,
const SelectionBound& b2);
COMPONENT_EXPORT(GFX)
gfx::RectF RectFBetweenVisibleSelectionBounds(const SelectionBound& b1,
const SelectionBound& b2);
// This is declared here for use in gtest-based unit tests but is defined in
// the //ui/gfx:test_support target. Depend on that to use this in your unit
// test. This should not be used in production code - call ToString() instead.
void PrintTo(const SelectionBound& bound, ::std::ostream* os);
} // namespace gfx
#endif // UI_GFX_SELECTION_BOUND_H_
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