1 // Copyright 2013 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 #ifndef UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 6 #define UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 7 8 #include <list> 9 #include <map> 10 11 #include "base/memory/scoped_ptr.h" 12 #include "third_party/skia/include/core/SkColor.h" 13 #include "ui/message_center/message_center_export.h" 14 #include "ui/views/view.h" 15 16 namespace gfx { 17 class FontList; 18 } 19 20 namespace message_center { 21 22 class InnerBoundedLabel; 23 24 namespace test { 25 class BoundedLabelTest; 26 } 27 28 // BoundedLabels display left aligned text up to a maximum number of lines, with 29 // ellipsis at the end of the last line for any omitted text. BoundedLabel is a 30 // direct subclass of views::Views rather than a subclass of views::Label 31 // to avoid exposing some of views::Label's methods that can't be made to work 32 // with BoundedLabel. See the description of InnerBoundedLabel in the 33 // bounded_label.cc file for details. 34 class MESSAGE_CENTER_EXPORT BoundedLabel : public views::View { 35 public: 36 BoundedLabel(const string16& text, const gfx::FontList& font_list); 37 BoundedLabel(const string16& text); 38 virtual ~BoundedLabel(); 39 40 void SetColors(SkColor textColor, SkColor backgroundColor); 41 void SetLineHeight(int height); // Pass in 0 for default height. 42 void SetLineLimit(int lines); // Pass in -1 for no limit. 43 44 int GetLineHeight() const; 45 int GetLineLimit() const; 46 47 // Pass in a -1 width to use the preferred width, a -1 limit to skip limits. 48 int GetLinesForWidthAndLimit(int width, int limit); 49 gfx::Size GetSizeForWidthAndLines(int width, int lines); 50 51 // Overridden from views::View. 52 virtual int GetBaseline() const OVERRIDE; 53 virtual gfx::Size GetPreferredSize() OVERRIDE; 54 virtual int GetHeightForWidth(int width) OVERRIDE; 55 virtual void Paint(gfx::Canvas* canvas) OVERRIDE; 56 virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE; 57 virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE; 58 59 protected: 60 // Overridden from views::View. 61 virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE; 62 virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE; 63 64 private: 65 friend class test::BoundedLabelTest; 66 67 string16 GetWrappedTextForTest(int width, int lines); 68 69 scoped_ptr<InnerBoundedLabel> label_; 70 int line_limit_; 71 72 DISALLOW_COPY_AND_ASSIGN(BoundedLabel); 73 }; 74 75 } // namespace message_center 76 77 #endif // UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 78
