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// Copyright (c) 2012 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 "ui/gfx/geometry/rect_conversions.h"
#include <algorithm>
#include <cmath>
#include "base/check.h"
#include "base/numerics/safe_conversions.h"
namespace gfx {
namespace {
int FloorIgnoringError(float f, float error) {
int rounded = base::ClampRound(f);
return std::abs(rounded - f) < error ? rounded : base::ClampFloor(f);
}
int CeilIgnoringError(float f, float error) {
int rounded = base::ClampRound(f);
return std::abs(rounded - f) < error ? rounded : base::ClampCeil(f);
}
} // anonymous namespace
Rect ToEnclosingRect(const RectF& r) {
int left = base::ClampFloor(r.x());
int right = r.width() ? base::ClampCeil(r.right()) : left;
int top = base::ClampFloor(r.y());
int bottom = r.height() ? base::ClampCeil(r.bottom()) : top;
Rect result;
result.SetByBounds(left, top, right, bottom);
return result;
}
Rect ToEnclosingRectIgnoringError(const RectF& r, float error) {
int left = FloorIgnoringError(r.x(), error);
int right = r.width() ? CeilIgnoringError(r.right(), error) : left;
int top = FloorIgnoringError(r.y(), error);
int bottom = r.height() ? CeilIgnoringError(r.bottom(), error) : top;
Rect result;
result.SetByBounds(left, top, right, bottom);
return result;
}
Rect ToEnclosedRect(const RectF& rect) {
Rect result;
result.SetByBounds(base::ClampCeil(rect.x()), base::ClampCeil(rect.y()),
base::ClampFloor(rect.right()),
base::ClampFloor(rect.bottom()));
return result;
}
Rect ToEnclosedRectIgnoringError(const RectF& r, float error) {
int left = CeilIgnoringError(r.x(), error);
int right = r.width() ? FloorIgnoringError(r.right(), error) : left;
int top = CeilIgnoringError(r.y(), error);
int bottom = r.height() ? FloorIgnoringError(r.bottom(), error) : top;
Rect result;
result.SetByBounds(left, top, right, bottom);
return result;
}
Rect ToNearestRect(const RectF& rect) {
float float_min_x = rect.x();
float float_min_y = rect.y();
float float_max_x = rect.right();
float float_max_y = rect.bottom();
int min_x = base::ClampRound(float_min_x);
int min_y = base::ClampRound(float_min_y);
int max_x = base::ClampRound(float_max_x);
int max_y = base::ClampRound(float_max_y);
// If these DCHECKs fail, you're using the wrong method, consider using
// ToEnclosingRect or ToEnclosedRect instead.
DCHECK(std::abs(min_x - float_min_x) < 0.01f);
DCHECK(std::abs(min_y - float_min_y) < 0.01f);
DCHECK(std::abs(max_x - float_max_x) < 0.01f);
DCHECK(std::abs(max_y - float_max_y) < 0.01f);
Rect result;
result.SetByBounds(min_x, min_y, max_x, max_y);
return result;
}
bool IsNearestRectWithinDistance(const gfx::RectF& rect, float distance) {
float float_min_x = rect.x();
float float_min_y = rect.y();
float float_max_x = rect.right();
float float_max_y = rect.bottom();
int min_x = base::ClampRound(float_min_x);
int min_y = base::ClampRound(float_min_y);
int max_x = base::ClampRound(float_max_x);
int max_y = base::ClampRound(float_max_y);
return (std::abs(min_x - float_min_x) < distance) &&
(std::abs(min_y - float_min_y) < distance) &&
(std::abs(max_x - float_max_x) < distance) &&
(std::abs(max_y - float_max_y) < distance);
}
gfx::Rect ToRoundedRect(const gfx::RectF& rect) {
int left = base::ClampRound(rect.x());
int top = base::ClampRound(rect.y());
int right = base::ClampRound(rect.right());
int bottom = base::ClampRound(rect.bottom());
gfx::Rect result;
result.SetByBounds(left, top, right, bottom);
return result;
}
Rect ToFlooredRectDeprecated(const RectF& rect) {
return Rect(base::ClampFloor(rect.x()), base::ClampFloor(rect.y()),
base::ClampFloor(rect.width()), base::ClampFloor(rect.height()));
}
} // namespace gfx
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