apps/size_constraints.cc

   1 // Copyright 2014 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 "apps/size_constraints.h"
   6
   7 #include <algorithm>
   8
   9 #include "ui/gfx/insets.h"
  10
  11 namespace apps {
  12
  13 SizeConstraints::SizeConstraints()
  14     : maximum_size_(kUnboundedSize, kUnboundedSize) {}
  15
  16 SizeConstraints::SizeConstraints(const gfx::Size& min_size,
  17                                  const gfx::Size& max_size)
  18     : minimum_size_(min_size), maximum_size_(max_size) {}
  19
  20 SizeConstraints::~SizeConstraints() {}
  21
  22 // static
  23 gfx::Size SizeConstraints::AddFrameToConstraints(
  24     const gfx::Size& size_constraints,
  25     const gfx::Insets& frame_insets) {
  26   return gfx::Size(
  27       size_constraints.width() == kUnboundedSize
  28           ? kUnboundedSize
  29           : size_constraints.width() + frame_insets.width(),
  30       size_constraints.height() == kUnboundedSize
  31           ? kUnboundedSize
  32           : size_constraints.height() + frame_insets.height());
  33 }
  34
  35 gfx::Size SizeConstraints::ClampSize(gfx::Size size) const {
  36   const gfx::Size max_size = GetMaximumSize();
  37   if (max_size.width() != kUnboundedSize)
  38     size.set_width(std::min(size.width(), max_size.width()));
  39   if (max_size.height() != kUnboundedSize)
  40     size.set_height(std::min(size.height(), max_size.height()));
  41   size.SetToMax(GetMinimumSize());
  42   return size;
  43 }
  44
  45 bool SizeConstraints::HasMinimumSize() const {
  46   const gfx::Size min_size = GetMinimumSize();
  47   return min_size.width() != kUnboundedSize ||
  48          min_size.height() != kUnboundedSize;
  49 }
  50
  51 bool SizeConstraints::HasMaximumSize() const {
  52   const gfx::Size max_size = GetMaximumSize();
  53   return max_size.width() != kUnboundedSize ||
  54          max_size.height() != kUnboundedSize;
  55 }
  56
  57 bool SizeConstraints::HasFixedSize() const {
  58   return !GetMinimumSize().IsEmpty() && GetMinimumSize() == GetMaximumSize();
  59 }
  60
  61 gfx::Size SizeConstraints::GetMinimumSize() const {
  62   return minimum_size_;
  63 }
  64
  65 gfx::Size SizeConstraints::GetMaximumSize() const {
  66   return gfx::Size(
  67       maximum_size_.width() == kUnboundedSize
  68           ? kUnboundedSize
  69           : std::max(maximum_size_.width(), minimum_size_.width()),
  70       maximum_size_.height() == kUnboundedSize
  71           ? kUnboundedSize
  72           : std::max(maximum_size_.height(), minimum_size_.height()));
  73 }
  74
  75 void SizeConstraints::set_minimum_size(const gfx::Size& min_size) {
  76   minimum_size_ = min_size;
  77 }
  78
  79 void SizeConstraints::set_maximum_size(const gfx::Size& max_size) {
  80   maximum_size_ = max_size;
  81 }
  82
  83 }  // namespace apps