ui/gfx/geometry/rect_conversions.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gfx/geometry/rect_conversions.h"
   6
   7 #include <algorithm>
   8 #include <cmath>
   9
  10 #include "base/logging.h"
  11 #include "ui/gfx/geometry/safe_integer_conversions.h"
  12
  13 namespace gfx {
  14
  15 Rect ToEnclosingRect(const RectF& rect) {
  16   int min_x = ToFlooredInt(rect.x());
  17   int min_y = ToFlooredInt(rect.y());
  18   float max_x = rect.right();
  19   float max_y = rect.bottom();
  20   int width =
  21       rect.width() == 0
  22           ? 0
  23           : std::max(
  24                 ToCeiledInt(static_cast<float>(ToCeiledInt(max_x)) - min_x), 0);
  25   int height =
  26       rect.height() == 0
  27           ? 0
  28           : std::max(
  29                 ToCeiledInt(static_cast<float>(ToCeiledInt(max_y)) - min_y), 0);
  30   return Rect(min_x, min_y, width, height);
  31 }
  32
  33 Rect ToEnclosedRect(const RectF& rect) {
  34   int min_x = ToCeiledInt(rect.x());
  35   int min_y = ToCeiledInt(rect.y());
  36   float max_x = rect.right();
  37   float max_y = rect.bottom();
  38   int width = std::max(
  39       ToFlooredInt(static_cast<float>(ToFlooredInt(max_x)) - min_x), 0);
  40   int height = std::max(
  41       ToFlooredInt(static_cast<float>(ToFlooredInt(max_y)) - min_y), 0);
  42   return Rect(min_x, min_y, width, height);
  43 }
  44
  45 Rect ToNearestRect(const RectF& rect) {
  46   float float_min_x = rect.x();
  47   float float_min_y = rect.y();
  48   float float_max_x = rect.right();
  49   float float_max_y = rect.bottom();
  50
  51   int min_x = ToRoundedInt(float_min_x);
  52   int min_y = ToRoundedInt(float_min_y);
  53   int max_x = ToRoundedInt(float_max_x);
  54   int max_y = ToRoundedInt(float_max_y);
  55
  56   // If these DCHECKs fail, you're using the wrong method, consider using
  57   // ToEnclosingRect or ToEnclosedRect instead.
  58   DCHECK(std::abs(min_x - float_min_x) < 0.01f);
  59   DCHECK(std::abs(min_y - float_min_y) < 0.01f);
  60   DCHECK(std::abs(max_x - float_max_x) < 0.01f);
  61   DCHECK(std::abs(max_y - float_max_y) < 0.01f);
  62
  63   return Rect(min_x, min_y, max_x - min_x, max_y - min_y);
  64 }
  65
  66 bool IsNearestRectWithinDistance(const gfx::RectF& rect, float distance) {
  67   float float_min_x = rect.x();
  68   float float_min_y = rect.y();
  69   float float_max_x = rect.right();
  70   float float_max_y = rect.bottom();
  71
  72   int min_x = ToRoundedInt(float_min_x);
  73   int min_y = ToRoundedInt(float_min_y);
  74   int max_x = ToRoundedInt(float_max_x);
  75   int max_y = ToRoundedInt(float_max_y);
  76
  77   return
  78       (std::abs(min_x - float_min_x) < distance) &&
  79       (std::abs(min_y - float_min_y) < distance) &&
  80       (std::abs(max_x - float_max_x) < distance) &&
  81       (std::abs(max_y - float_max_y) < distance);
  82 }
  83
  84 Rect ToFlooredRectDeprecated(const RectF& rect) {
  85   return Rect(ToFlooredInt(rect.x()),
  86               ToFlooredInt(rect.y()),
  87               ToFlooredInt(rect.width()),
  88               ToFlooredInt(rect.height()));
  89 }
  90
  91 }  // namespace gfx
  92