| OLD | NEW |
|---|
| (Empty) |
| 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 #include "ui/views/examples/multiline_example.h" | |
| 6 | |
| 7 #include "base/strings/utf_string_conversions.h" | |
| 8 #include "ui/events/event.h" | |
| 9 #include "ui/gfx/render_text.h" | |
| 10 #include "ui/views/background.h" | |
| 11 #include "ui/views/border.h" | |
| 12 #include "ui/views/controls/button/checkbox.h" | |
| 13 #include "ui/views/controls/label.h" | |
| 14 #include "ui/views/controls/textfield/textfield.h" | |
| 15 #include "ui/views/layout/grid_layout.h" | |
| 16 #include "ui/views/view.h" | |
| 17 | |
| 18 using base::ASCIIToUTF16; | |
| 19 | |
| 20 namespace views { | |
| 21 namespace examples { | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 gfx::Range ClampRange(gfx::Range range, size_t max) { | |
| 26 range.set_start(std::min(range.start(), max)); | |
| 27 range.set_end(std::min(range.end(), max)); | |
| 28 return range; | |
| 29 } | |
| 30 | |
| 31 // A Label with a clamped preferred width to demonstrate wrapping. | |
| 32 class PreferredSizeLabel : public Label { | |
| 33 public: | |
| 34 PreferredSizeLabel() : Label() {} | |
| 35 virtual ~PreferredSizeLabel() {} | |
| 36 | |
| 37 // Label: | |
| 38 virtual gfx::Size GetPreferredSize() const override { | |
| 39 return gfx::Size(50, Label::GetPreferredSize().height()); | |
| 40 } | |
| 41 | |
| 42 private: | |
| 43 DISALLOW_COPY_AND_ASSIGN(PreferredSizeLabel); | |
| 44 }; | |
| 45 | |
| 46 } // namespace | |
| 47 | |
| 48 // A simple View that hosts a RenderText object. | |
| 49 class MultilineExample::RenderTextView : public View { | |
| 50 public: | |
| 51 RenderTextView() : render_text_(gfx::RenderText::CreateInstance()) { | |
| 52 render_text_->SetHorizontalAlignment(gfx::ALIGN_CENTER); | |
| 53 render_text_->SetColor(SK_ColorBLACK); | |
| 54 render_text_->SetMultiline(true); | |
| 55 SetBorder(Border::CreateSolidBorder(2, SK_ColorGRAY)); | |
| 56 } | |
| 57 | |
| 58 virtual void OnPaint(gfx::Canvas* canvas) override { | |
| 59 View::OnPaint(canvas); | |
| 60 render_text_->Draw(canvas); | |
| 61 } | |
| 62 | |
| 63 virtual gfx::Size GetPreferredSize() const override { | |
| 64 // Turn off multiline mode to get the single-line text size, which is the | |
| 65 // preferred size for this view. | |
| 66 render_text_->SetMultiline(false); | |
| 67 gfx::Size size(render_text_->GetContentWidth(), | |
| 68 render_text_->GetStringSize().height()); | |
| 69 size.Enlarge(GetInsets().width(), GetInsets().height()); | |
| 70 render_text_->SetMultiline(true); | |
| 71 return size; | |
| 72 } | |
| 73 | |
| 74 virtual int GetHeightForWidth(int w) const override { | |
| 75 // TODO(ckocagil): Why does this happen? | |
| 76 if (w == 0) | |
| 77 return View::GetHeightForWidth(w); | |
| 78 const gfx::Rect old_rect = render_text_->display_rect(); | |
| 79 gfx::Rect rect = old_rect; | |
| 80 rect.set_width(w - GetInsets().width()); | |
| 81 render_text_->SetDisplayRect(rect); | |
| 82 int height = render_text_->GetStringSize().height() + GetInsets().height(); | |
| 83 render_text_->SetDisplayRect(old_rect); | |
| 84 return height; | |
| 85 } | |
| 86 | |
| 87 void SetText(const base::string16& new_contents) { | |
| 88 // Color and style the text inside |test_range| to test colors and styles. | |
| 89 const size_t range_max = new_contents.length(); | |
| 90 gfx::Range color_range = ClampRange(gfx::Range(1, 21), range_max); | |
| 91 gfx::Range bold_range = ClampRange(gfx::Range(4, 10), range_max); | |
| 92 gfx::Range italic_range = ClampRange(gfx::Range(7, 13), range_max); | |
| 93 | |
| 94 render_text_->SetText(new_contents); | |
| 95 render_text_->SetColor(SK_ColorBLACK); | |
| 96 render_text_->ApplyColor(0xFFFF0000, color_range); | |
| 97 render_text_->SetStyle(gfx::DIAGONAL_STRIKE, false); | |
| 98 render_text_->ApplyStyle(gfx::DIAGONAL_STRIKE, true, color_range); | |
| 99 render_text_->SetStyle(gfx::UNDERLINE, false); | |
| 100 render_text_->ApplyStyle(gfx::UNDERLINE, true, color_range); | |
| 101 render_text_->ApplyStyle(gfx::BOLD, true, bold_range); | |
| 102 render_text_->ApplyStyle(gfx::ITALIC, true, italic_range); | |
| 103 InvalidateLayout(); | |
| 104 } | |
| 105 | |
| 106 private: | |
| 107 virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) override { | |
| 108 gfx::Rect bounds = GetLocalBounds(); | |
| 109 bounds.Inset(GetInsets()); | |
| 110 render_text_->SetDisplayRect(bounds); | |
| 111 } | |
| 112 | |
| 113 scoped_ptr<gfx::RenderText> render_text_; | |
| 114 | |
| 115 DISALLOW_COPY_AND_ASSIGN(RenderTextView); | |
| 116 }; | |
| 117 | |
| 118 MultilineExample::MultilineExample() | |
| 119 : ExampleBase("Multiline RenderText"), | |
| 120 render_text_view_(NULL), | |
| 121 label_(NULL), | |
| 122 textfield_(NULL), | |
| 123 label_checkbox_(NULL) { | |
| 124 } | |
| 125 | |
| 126 MultilineExample::~MultilineExample() { | |
| 127 } | |
| 128 | |
| 129 void MultilineExample::CreateExampleView(View* container) { | |
| 130 const base::string16 kTestString = base::WideToUTF16(L"qwerty" | |
| 131 L"\x627\x644\x631\x626\x64A\x633\x64A\x629" | |
| 132 L"asdfgh"); | |
| 133 | |
| 134 render_text_view_ = new RenderTextView(); | |
| 135 render_text_view_->SetText(kTestString); | |
| 136 | |
| 137 label_ = new PreferredSizeLabel(); | |
| 138 label_->SetText(kTestString); | |
| 139 label_->SetMultiLine(true); | |
| 140 label_->SetBorder(Border::CreateSolidBorder(2, SK_ColorCYAN)); | |
| 141 | |
| 142 label_checkbox_ = new Checkbox(ASCIIToUTF16("views::Label:")); | |
| 143 label_checkbox_->SetChecked(true); | |
| 144 label_checkbox_->set_listener(this); | |
| 145 label_checkbox_->set_request_focus_on_press(false); | |
| 146 | |
| 147 textfield_ = new Textfield(); | |
| 148 textfield_->set_controller(this); | |
| 149 textfield_->SetText(kTestString); | |
| 150 | |
| 151 GridLayout* layout = new GridLayout(container); | |
| 152 container->SetLayoutManager(layout); | |
| 153 | |
| 154 ColumnSet* column_set = layout->AddColumnSet(0); | |
| 155 column_set->AddColumn(GridLayout::LEADING, GridLayout::CENTER, | |
| 156 0.0f, GridLayout::USE_PREF, 0, 0); | |
| 157 column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, | |
| 158 1.0f, GridLayout::FIXED, 0, 0); | |
| 159 | |
| 160 layout->StartRow(0, 0); | |
| 161 layout->AddView(new Label(ASCIIToUTF16("gfx::RenderText:"))); | |
| 162 layout->AddView(render_text_view_); | |
| 163 | |
| 164 layout->StartRow(0, 0); | |
| 165 layout->AddView(label_checkbox_); | |
| 166 layout->AddView(label_); | |
| 167 | |
| 168 layout->StartRow(0, 0); | |
| 169 layout->AddView(new Label(ASCIIToUTF16("Sample Text:"))); | |
| 170 layout->AddView(textfield_); | |
| 171 } | |
| 172 | |
| 173 void MultilineExample::ContentsChanged(Textfield* sender, | |
| 174 const base::string16& new_contents) { | |
| 175 render_text_view_->SetText(new_contents); | |
| 176 if (label_checkbox_->checked()) | |
| 177 label_->SetText(new_contents); | |
| 178 container()->Layout(); | |
| 179 container()->SchedulePaint(); | |
| 180 } | |
| 181 | |
| 182 void MultilineExample::ButtonPressed(Button* sender, const ui::Event& event) { | |
| 183 DCHECK_EQ(sender, label_checkbox_); | |
| 184 label_->SetText(label_checkbox_->checked() ? textfield_->text() : | |
| 185 base::string16()); | |
| 186 container()->Layout(); | |
| 187 container()->SchedulePaint(); | |
| 188 } | |
| 189 | |
| 190 } // namespace examples | |
| 191 } // namespace views | |
| OLD | NEW |
|---|
Chromium Code Reviews
