| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2011 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/scroll_view_example.h" | |
| 6 | |
| 7 #include "base/strings/stringprintf.h" | |
| 8 #include "base/strings/utf_string_conversions.h" | |
| 9 #include "ui/views/background.h" | |
| 10 #include "ui/views/controls/button/label_button.h" | |
| 11 #include "ui/views/controls/button/radio_button.h" | |
| 12 #include "ui/views/layout/grid_layout.h" | |
| 13 #include "ui/views/view.h" | |
| 14 | |
| 15 using base::ASCIIToUTF16; | |
| 16 | |
| 17 namespace views { | |
| 18 namespace examples { | |
| 19 | |
| 20 // ScrollView's content, which draws gradient color on background. | |
| 21 // TODO(oshima): add child views as well. | |
| 22 class ScrollViewExample::ScrollableView : public View { | |
| 23 public: | |
| 24 ScrollableView() { | |
| 25 SetColor(SK_ColorRED, SK_ColorCYAN); | |
| 26 AddChildView(new LabelButton(NULL, ASCIIToUTF16("Button"))); | |
| 27 AddChildView(new RadioButton(ASCIIToUTF16("Radio Button"), 0)); | |
| 28 } | |
| 29 | |
| 30 virtual gfx::Size GetPreferredSize() const override { | |
| 31 return gfx::Size(width(), height()); | |
| 32 } | |
| 33 | |
| 34 void SetColor(SkColor from, SkColor to) { | |
| 35 set_background(Background::CreateVerticalGradientBackground(from, to)); | |
| 36 } | |
| 37 | |
| 38 void PlaceChildY(int index, int y) { | |
| 39 View* view = child_at(index); | |
| 40 gfx::Size size = view->GetPreferredSize(); | |
| 41 view->SetBounds(0, y, size.width(), size.height()); | |
| 42 } | |
| 43 | |
| 44 virtual void Layout() override { | |
| 45 PlaceChildY(0, 0); | |
| 46 PlaceChildY(1, height() / 2); | |
| 47 SizeToPreferredSize(); | |
| 48 } | |
| 49 | |
| 50 private: | |
| 51 DISALLOW_COPY_AND_ASSIGN(ScrollableView); | |
| 52 }; | |
| 53 | |
| 54 ScrollViewExample::ScrollViewExample() : ExampleBase("Scroll View") { | |
| 55 } | |
| 56 | |
| 57 ScrollViewExample::~ScrollViewExample() { | |
| 58 } | |
| 59 | |
| 60 void ScrollViewExample::CreateExampleView(View* container) { | |
| 61 wide_ = new LabelButton(this, ASCIIToUTF16("Wide")); | |
| 62 tall_ = new LabelButton(this, ASCIIToUTF16("Tall")); | |
| 63 big_square_ = new LabelButton(this, ASCIIToUTF16("Big Square")); | |
| 64 small_square_ = new LabelButton(this, ASCIIToUTF16("Small Square")); | |
| 65 scroll_to_ = new LabelButton(this, ASCIIToUTF16("Scroll to")); | |
| 66 scrollable_ = new ScrollableView(); | |
| 67 scroll_view_ = new ScrollView(); | |
| 68 scroll_view_->SetContents(scrollable_); | |
| 69 scrollable_->SetBounds(0, 0, 1000, 100); | |
| 70 scrollable_->SetColor(SK_ColorYELLOW, SK_ColorCYAN); | |
| 71 | |
| 72 GridLayout* layout = new GridLayout(container); | |
| 73 container->SetLayoutManager(layout); | |
| 74 | |
| 75 // Add scroll view. | |
| 76 ColumnSet* column_set = layout->AddColumnSet(0); | |
| 77 column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1, | |
| 78 GridLayout::USE_PREF, 0, 0); | |
| 79 layout->StartRow(1, 0); | |
| 80 layout->AddView(scroll_view_); | |
| 81 | |
| 82 // Add control buttons. | |
| 83 column_set = layout->AddColumnSet(1); | |
| 84 for (int i = 0; i < 5; i++) { | |
| 85 column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1, | |
| 86 GridLayout::USE_PREF, 0, 0); | |
| 87 } | |
| 88 layout->StartRow(0, 1); | |
| 89 layout->AddView(wide_); | |
| 90 layout->AddView(tall_); | |
| 91 layout->AddView(big_square_); | |
| 92 layout->AddView(small_square_); | |
| 93 layout->AddView(scroll_to_); | |
| 94 } | |
| 95 | |
| 96 void ScrollViewExample::ButtonPressed(Button* sender, const ui::Event& event) { | |
| 97 if (sender == wide_) { | |
| 98 scrollable_->SetBounds(0, 0, 1000, 100); | |
| 99 scrollable_->SetColor(SK_ColorYELLOW, SK_ColorCYAN); | |
| 100 } else if (sender == tall_) { | |
| 101 scrollable_->SetBounds(0, 0, 100, 1000); | |
| 102 scrollable_->SetColor(SK_ColorRED, SK_ColorCYAN); | |
| 103 } else if (sender == big_square_) { | |
| 104 scrollable_->SetBounds(0, 0, 1000, 1000); | |
| 105 scrollable_->SetColor(SK_ColorRED, SK_ColorGREEN); | |
| 106 } else if (sender == small_square_) { | |
| 107 scrollable_->SetBounds(0, 0, 100, 100); | |
| 108 scrollable_->SetColor(SK_ColorYELLOW, SK_ColorGREEN); | |
| 109 } else if (sender == scroll_to_) { | |
| 110 scroll_view_->contents()->ScrollRectToVisible( | |
| 111 gfx::Rect(20, 500, 1000, 500)); | |
| 112 } | |
| 113 scroll_view_->Layout(); | |
| 114 } | |
| 115 | |
| 116 } // namespace examples | |
| 117 } // namespace views | |
| OLD | NEW |
|---|
Chromium Code Reviews
