chrome/browser/devtools/devtools_contents_resizing_strategy.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 "chrome/browser/devtools/devtools_contents_resizing_strategy.h"
   6
   7 #include <algorithm>
   8
   9 DevToolsContentsResizingStrategy::DevToolsContentsResizingStrategy() {
  10 }
  11
  12 DevToolsContentsResizingStrategy::DevToolsContentsResizingStrategy(
  13     const gfx::Insets& insets, const gfx::Size& min_size)
  14     : insets_(insets),
  15       min_size_(min_size) {
  16 }
  17
  18 void DevToolsContentsResizingStrategy::CopyFrom(
  19     const DevToolsContentsResizingStrategy& strategy) {
  20   insets_ = strategy.insets();
  21   min_size_ = strategy.min_size();
  22 }
  23
  24 bool DevToolsContentsResizingStrategy::Equals(
  25     const DevToolsContentsResizingStrategy& strategy) {
  26   return insets_ == strategy.insets() && min_size_ == strategy.min_size();
  27 }
  28
  29 void ApplyDevToolsContentsResizingStrategy(
  30     const DevToolsContentsResizingStrategy& strategy,
  31     const gfx::Size& container_size,
  32     const gfx::Rect& old_devtools_bounds,
  33     const gfx::Rect& old_contents_bounds,
  34     gfx::Rect* new_devtools_bounds,
  35     gfx::Rect* new_contents_bounds) {
  36   new_devtools_bounds->SetRect(
  37       0, 0, container_size.width(), container_size.height());
  38
  39   const gfx::Insets& insets = strategy.insets();
  40   const gfx::Size& min_size = strategy.min_size();
  41
  42   int width = std::max(0, container_size.width() - insets.width());
  43   int left = insets.left();
  44   if (width < min_size.width() && insets.width() > 0) {
  45     int min_width = std::min(min_size.width(), container_size.width());
  46     int insets_width = container_size.width() - min_width;
  47     int insets_decrease = insets.width() - insets_width;
  48     // Decrease both left and right insets proportionally.
  49     left -= insets_decrease * insets.left() / insets.width();
  50     width = min_width;
  51   }
  52   left = std::max(0, std::min(container_size.width(), left));
  53
  54   int height = std::max(0, container_size.height() - insets.height());
  55   int top = insets.top();
  56   if (height < min_size.height() && insets.height() > 0) {
  57     int min_height = std::min(min_size.height(), container_size.height());
  58     int insets_height = container_size.height() - min_height;
  59     int insets_decrease = insets.height() - insets_height;
  60     // Decrease both top and bottom insets proportionally.
  61     top -= insets_decrease * insets.top() / insets.height();
  62     height = min_height;
  63   }
  64   top = std::max(0, std::min(container_size.height(), top));
  65
  66   new_contents_bounds->SetRect(left, top, width, height);
  67 }