ui/gfx/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/rect_conversions.h"
   6
   7 #include <algorithm>
   8 #include <cmath>
   9
  10 #include "base/logging.h"
  11 #include "ui/gfx/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 = rect.width() == 0 ? 0 : std::max(ToCeiledInt(max_x) - min_x, 0);
  21   int height = rect.height() == 0 ? 0 : std::max(ToCeiledInt(max_y) - min_y, 0);
  22   return Rect(min_x, min_y, width, height);
  23 }
  24
  25 Rect ToEnclosedRect(const RectF& rect) {
  26   int min_x = ToCeiledInt(rect.x());
  27   int min_y = ToCeiledInt(rect.y());
  28   float max_x = rect.right();
  29   float max_y = rect.bottom();
  30   int width = std::max(ToFlooredInt(max_x) - min_x, 0);
  31   int height = std::max(ToFlooredInt(max_y) - min_y, 0);
  32   return Rect(min_x, min_y, width, height);
  33 }
  34
  35 Rect ToNearestRect(const RectF& rect) {
  36   float float_min_x = rect.x();
  37   float float_min_y = rect.y();
  38   float float_max_x = rect.right();
  39   float float_max_y = rect.bottom();
  40
  41   int min_x = ToRoundedInt(float_min_x);
  42   int min_y = ToRoundedInt(float_min_y);
  43   int max_x = ToRoundedInt(float_max_x);
  44   int max_y = ToRoundedInt(float_max_y);
  45
  46   // If these DCHECKs fail, you're using the wrong method, consider using
  47   // ToEnclosingRect or ToEnclosedRect instead.
  48   DCHECK(std::abs(min_x - float_min_x) < 0.01f);
  49   DCHECK(std::abs(min_y - float_min_y) < 0.01f);
  50   DCHECK(std::abs(max_x - float_max_x) < 0.01f);
  51   DCHECK(std::abs(max_y - float_max_y) < 0.01f);
  52
  53   return Rect(min_x, min_y, max_x - min_x, max_y - min_y);
  54 }
  55
  56 bool IsNearestRectWithinDistance(const gfx::RectF& rect, float distance) {
  57   float float_min_x = rect.x();
  58   float float_min_y = rect.y();
  59   float float_max_x = rect.right();
  60   float float_max_y = rect.bottom();
  61
  62   int min_x = ToRoundedInt(float_min_x);
  63   int min_y = ToRoundedInt(float_min_y);
  64   int max_x = ToRoundedInt(float_max_x);
  65   int max_y = ToRoundedInt(float_max_y);
  66
  67   return
  68       (std::abs(min_x - float_min_x) < distance) &&
  69       (std::abs(min_y - float_min_y) < distance) &&
  70       (std::abs(max_x - float_max_x) < distance) &&
  71       (std::abs(max_y - float_max_y) < distance);
  72 }
  73
  74 Rect ToFlooredRectDeprecated(const RectF& rect) {
  75   return Rect(ToFlooredInt(rect.x()),
  76               ToFlooredInt(rect.y()),
  77               ToFlooredInt(rect.width()),
  78               ToFlooredInt(rect.height()));
  79 }
  80
  81 }  // namespace gfx
  82