Colors in views::StyledLabel.

ui/views/controls/styled_label.cc

 // Copyright 2013 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/styled_label.h"
 
 #include <vector>
 
 #include "base/strings/string_util.h"
 #include "ui/base/text/text_elider.h"
+#include "ui/native_theme/native_theme.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/link.h"
 #include "ui/views/controls/styled_label_listener.h"
 
 namespace views {
 
 namespace {
 
 // Calculates the height of a line of text. Currently returns the height of
 // a label.
 int CalculateLineHeight() {
   Label label;
   return label.GetPreferredSize().height();
 }
 
-scoped_ptr<View> CreateLabelRange(const string16& text,
-                                  const StyledLabel::RangeStyleInfo& style_info,
-                                  views::LinkListener* link_listener) {
+scoped_ptr<Label> CreateLabelRange(
+    const string16& text,
+    const StyledLabel::RangeStyleInfo& style_info,
+    views::LinkListener* link_listener) {
   scoped_ptr<Label> result;
 
   if (style_info.is_link) {
     Link* link = new Link(text);
     link->set_listener(link_listener);
     link->SetUnderline((style_info.font_style & gfx::Font::UNDERLINE) != 0);
     result.reset(link);
   } else {
     Label* label = new Label(text);
     // Give the label a focus border so that its preferred size matches
     // links' preferred sizes
     label->SetHasFocusBorder(true);
 
     result.reset(label);
   }
 
+  result->SetEnabledColor(style_info.color);
+
   if (!style_info.tooltip.empty())
     result->SetTooltipText(style_info.tooltip);
   if (style_info.font_style != gfx::Font::NORMAL)
     result->SetFont(result->font().DeriveFont(0, style_info.font_style));
 
-  return scoped_ptr<View>(result.release());
+  return scoped_ptr<Label>(result.release());
 }
 
 }  // namespace
 
 
 StyledLabel::RangeStyleInfo::RangeStyleInfo()
     : font_style(gfx::Font::NORMAL),
+      color(ui::NativeTheme::instance()->GetSystemColor(
+          ui::NativeTheme::kColorId_LabelEnabledColor)),
       disable_line_wrapping(false),
       is_link(false) {
 }
 
 StyledLabel::RangeStyleInfo::~RangeStyleInfo() {}
 
 // static
 StyledLabel::RangeStyleInfo StyledLabel::RangeStyleInfo::CreateForLink() {
   RangeStyleInfo result;
   result.disable_line_wrapping = true;
   result.is_link = true;
   result.font_style = gfx::Font::UNDERLINE;
+  result.color = Link::GetDefaultEnabledColor();
   return result;
 }
 
 bool StyledLabel::StyleRange::operator<(
     const StyledLabel::StyleRange& other) const {
   // Intentionally reversed so the priority queue is sorted by smallest first.
   return range.start() > other.range.start();
 }
 
 StyledLabel::StyledLabel(const string16& text, StyledLabelListener* listener)
-    : listener_(listener) {
+    : listener_(listener),
+      auto_color_readability_(true),
+      background_color_set_(false) {
   TrimWhitespace(text, TRIM_TRAILING, &text_);
 }
 
 StyledLabel::~StyledLabel() {}
 
 void StyledLabel::SetText(const string16& text) {
   text_ = text;
   calculated_size_ = gfx::Size();
   style_ranges_ = std::priority_queue<StyleRange>();
   RemoveAllChildViews(true);
   PreferredSizeChanged();
 }
 
 void StyledLabel::AddStyleRange(const ui::Range& range,
                                 const RangeStyleInfo& style_info) {
   DCHECK(!range.is_reversed());
   DCHECK(!range.is_empty());
   DCHECK(ui::Range(0, text_.size()).Contains(range));
 
   style_ranges_.push(StyleRange(range, style_info));
 
   calculated_size_ = gfx::Size();
   PreferredSizeChanged();
 }
 
+void StyledLabel::SetAutoColorReadabilityEnabled(bool enabled) {
+  auto_color_readability_ = enabled;
+}
+
+void StyledLabel::SetBackgroundColor(SkColor color) {
+  background_color_ = color;
+  background_color_set_ = true;
+}
+
 gfx::Insets StyledLabel::GetInsets() const {
   gfx::Insets insets = View::GetInsets();
   const gfx::Insets focus_border_padding(1, 1, 1, 1);
   insets += focus_border_padding;
   return insets;
 }
 
 int StyledLabel::GetHeightForWidth(int w) {
   if (w != calculated_size_.width())
     calculated_size_ = gfx::Size(w, CalculateAndDoLayout(w, true));
@@ skipping 73 matching lines @@
           continue;
         }
         break;
       }
 
       x = 0;
       line++;
       continue;
     }
 
-    scoped_ptr<View> view;
+    scoped_ptr<Label> label;
     if (position >= range.start()) {
       const RangeStyleInfo& style_info = style_ranges.top().style_info;
 
       if (style_info.disable_line_wrapping && chunk.size() < range.length() &&
           position == range.start() && x != 0) {
         // If the chunk should not be wrapped, try to fit it entirely on the
         // next line.
         x = 0;
         line++;
         continue;
       }
 
       chunk = chunk.substr(0, std::min(chunk.size(), range.end() - position));
 
-      view = CreateLabelRange(chunk, style_info, this);
+      label = CreateLabelRange(chunk, style_info, this);
 
       if (style_info.is_link && !dry_run)
-        link_targets_[view.get()] = range;
+        link_targets_[label.get()] = range;
 
       if (position + chunk.size() >= range.end())
         style_ranges.pop();
     } else {
       // This chunk is normal text.
       if (position + chunk.size() > range.start())
         chunk = chunk.substr(0, range.start() - position);
-      view = CreateLabelRange(chunk, RangeStyleInfo(), this);
+      label = CreateLabelRange(chunk, RangeStyleInfo(), this);
     }
 
+    label->SetAutoColorReadabilityEnabled(auto_color_readability_);
+    if (background_color_set_)
+      label->SetBackgroundColor(background_color_);
+
     // Lay out the views to overlap by 1 pixel to compensate for their border
     // spacing. Otherwise, "<a>link</a>," will render as "link ,".
     const int overlap = 1;
-    const gfx::Size view_size = view->GetPreferredSize();
+    const gfx::Size view_size = label->GetPreferredSize();
     DCHECK_EQ(line_height, view_size.height() - 2 * overlap);
     if (!dry_run) {
-      view->SetBoundsRect(gfx::Rect(
+      label->SetBoundsRect(gfx::Rect(
           gfx::Point(GetInsets().left() + x - overlap,
                      GetInsets().top() + line * line_height - overlap),
           view_size));
-      AddChildView(view.release());
+      AddChildView(label.release());
     }
     x += view_size.width() - 2 * overlap;
 
     remaining_string = remaining_string.substr(chunk.size());
   }
 
   return (line + 1) * line_height + GetInsets().height();
 }
 
 }  // namespace views