views: Make view::Views::GetPreferredSize() const.

ui/views/controls/label.cc

 // 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/views/controls/label.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <vector>
@@ skipping 200 matching lines @@
     insets += gfx::Insets(kFocusBorderPadding, kFocusBorderPadding,
                           kFocusBorderPadding, kFocusBorderPadding);
   }
   return insets;
 }
 
 int Label::GetBaseline() const {
   return GetInsets().top() + font_list_.GetBaseline();
 }
 
-gfx::Size Label::GetPreferredSize() {
+gfx::Size Label::GetPreferredSize() const {
   // Return a size of (0, 0) if the label is not visible and if the
   // collapse_when_hidden_ flag is set.
   // TODO(munjal): This logic probably belongs to the View class. But for now,
   // put it here since putting it in View class means all inheriting classes
   // need ot respect the collapse_when_hidden_ flag.
   if (!visible() && collapse_when_hidden_)
     return gfx::Size();
 
   gfx::Size size(GetTextSize());
   gfx::Insets insets = GetInsets();
   size.Enlarge(insets.width(), insets.height());
   return size;
 }
 
-gfx::Size Label::GetMinimumSize() {
+gfx::Size Label::GetMinimumSize() const {
   gfx::Size text_size(GetTextSize());
   if ((!visible() && collapse_when_hidden_) || text_size.IsEmpty())
     return gfx::Size();
 
   gfx::Size size(gfx::GetStringWidth(base::string16(gfx::kEllipsisUTF16),
                                      font_list_),
                  font_list_.GetHeight());
   size.SetToMin(text_size);  // The actual text may be shorter than an ellipsis.
   gfx::Insets insets = GetInsets();
   size.Enlarge(insets.width(), insets.height());
   return size;
 }
 
-int Label::GetHeightForWidth(int w) {
+int Label::GetHeightForWidth(int w) const {
   if (!is_multi_line_)
     return View::GetHeightForWidth(w);
 
   w = std::max(0, w - GetInsets().width());
 
   for (size_t i = 0; i < cached_heights_.size(); ++i) {
     const gfx::Size& s = cached_heights_[i];
     if (s.width() == w)
       return s.height() + GetInsets().height();
   }
@@ skipping 296 matching lines @@
     cached_heights_[i] = gfx::Size();
 }
 
 bool Label::ShouldShowDefaultTooltip() const {
   return !is_multi_line_ && !is_obscured_ &&
          gfx::GetStringWidth(layout_text(), font_list_) >
              GetAvailableRect().width();
 }
 
 }  // namespace views