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      1 // Copyright (c) 2012 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 "ui/views/examples/label_example.h"
      6 
      7 #include "base/strings/utf_string_conversions.h"
      8 #include "ui/views/border.h"
      9 #include "ui/views/controls/label.h"
     10 #include "ui/views/layout/box_layout.h"
     11 #include "ui/views/view.h"
     12 
     13 namespace views {
     14 namespace examples {
     15 
     16 namespace {
     17 
     18 // A Label with a constrained preferred size to demonstrate eliding or wrapping.
     19 class PreferredSizeLabel : public Label {
     20  public:
     21   PreferredSizeLabel();
     22   virtual ~PreferredSizeLabel();
     23 
     24   // Overridden from Label:
     25   virtual gfx::Size GetPreferredSize() OVERRIDE;
     26 
     27  private:
     28   DISALLOW_COPY_AND_ASSIGN(PreferredSizeLabel);
     29 };
     30 
     31 PreferredSizeLabel::PreferredSizeLabel() : Label() {
     32   set_border(Border::CreateSolidBorder(2, SK_ColorCYAN));
     33 }
     34 
     35 PreferredSizeLabel::~PreferredSizeLabel() {}
     36 
     37 gfx::Size PreferredSizeLabel::GetPreferredSize() { return gfx::Size(100, 40); }
     38 
     39 }  // namespace
     40 
     41 LabelExample::LabelExample() : ExampleBase("Label") {}
     42 
     43 LabelExample::~LabelExample() {}
     44 
     45 void LabelExample::CreateExampleView(View* container) {
     46   // A very simple label example, followed by additional helpful examples.
     47   container->SetLayoutManager(new BoxLayout(BoxLayout::kVertical, 0, 0, 10));
     48   Label* label = new Label(ASCIIToUTF16("Hello world!"));
     49   container->AddChildView(label);
     50 
     51   const wchar_t hello_world_hebrew[] =
     52       L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd!";
     53   label = new Label(WideToUTF16(hello_world_hebrew));
     54   label->SetHorizontalAlignment(gfx::ALIGN_RIGHT);
     55   container->AddChildView(label);
     56 
     57   label = new Label(WideToUTF16(L"A UTF16 surrogate pair: \x5d0\x5b0"));
     58   label->SetHorizontalAlignment(gfx::ALIGN_RIGHT);
     59   container->AddChildView(label);
     60 
     61   label = new Label(ASCIIToUTF16("A left-aligned blue label."));
     62   label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
     63   label->SetEnabledColor(SK_ColorBLUE);
     64   container->AddChildView(label);
     65 
     66   label = new Label(ASCIIToUTF16("A Courier-18 label with a shadow."));
     67   label->SetFont(gfx::Font("Courier", 18));
     68   label->SetShadowColors(SK_ColorGRAY, SK_ColorLTGRAY);
     69   label->SetShadowOffset(1, 1);
     70   container->AddChildView(label);
     71 
     72   label = new PreferredSizeLabel();
     73   label->SetText(ASCIIToUTF16("A long label will elide toward its logical end "
     74       "if the text's width exceeds the label's available width."));
     75   container->AddChildView(label);
     76 
     77   label = new PreferredSizeLabel();
     78   label->SetText(ASCIIToUTF16("A multi-line label will wrap onto subsequent "
     79       "lines if the text's width exceeds the label's available width."));
     80   label->SetMultiLine(true);
     81   container->AddChildView(label);
     82 }
     83 
     84 }  // namespace examples
     85 }  // namespace views
     86