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| 1 // Copyright 2014 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 EXAMPLES_KEYBOARD_KEYBOARD_VIEW_H_ | |
| 6 #define EXAMPLES_KEYBOARD_KEYBOARD_VIEW_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "ui/gfx/font_list.h" | |
| 12 #include "ui/views/controls/button/button.h" | |
| 13 #include "ui/views/view.h" | |
| 14 | |
| 15 namespace views { | |
| 16 class LabelButton; | |
| 17 } | |
| 18 | |
| 19 namespace mojo { | |
| 20 namespace examples { | |
| 21 | |
| 22 class KeyboardDelegate; | |
| 23 struct Key; | |
| 24 struct Row; | |
| 25 | |
| 26 // Shows a keyboard the user can interact with. The delegate is notified any | |
| 27 // time the user presses a button. | |
| 28 class KeyboardView : public views::View, public views::ButtonListener { | |
| 29 public: | |
| 30 explicit KeyboardView(KeyboardDelegate* delegate); | |
| 31 virtual ~KeyboardView(); | |
| 32 | |
| 33 // views::View: | |
| 34 virtual void Layout() override; | |
| 35 | |
| 36 private: | |
| 37 // The type of keys that are shown. | |
| 38 enum KeyboardLayout { | |
| 39 KEYBOARD_LAYOUT_ALPHA, | |
| 40 | |
| 41 // Uppercase characters. | |
| 42 KEYBOARD_LAYOUT_SHIFT, | |
| 43 | |
| 44 // Numeric characters. | |
| 45 KEYBOARD_LAYOUT_NUMERIC, | |
| 46 }; | |
| 47 | |
| 48 int event_flags() const { | |
| 49 return (keyboard_layout_ == KEYBOARD_LAYOUT_SHIFT) ? | |
| 50 ui::EF_SHIFT_DOWN : ui::EF_NONE; | |
| 51 } | |
| 52 | |
| 53 void SetLayout(KeyboardLayout layout); | |
| 54 | |
| 55 // Lays out the buttons for the specified row. | |
| 56 void LayoutRow(const Row& row, | |
| 57 int row_index, | |
| 58 int initial_x, | |
| 59 int button_width, | |
| 60 int button_height); | |
| 61 | |
| 62 // Sets the rows to show. | |
| 63 void SetRows(const std::vector<const Row*>& rows); | |
| 64 | |
| 65 // Configures the button in a row. | |
| 66 void ConfigureButtonsInRow(int row_index, const Row& row); | |
| 67 | |
| 68 // Creates a new button. | |
| 69 views::View* CreateButton(); | |
| 70 | |
| 71 // Returns the button corresponding to a key at the specified row/column. | |
| 72 views::LabelButton* GetButton(int row, int column); | |
| 73 | |
| 74 const Key& GetKeyForButton(views::Button* button) const; | |
| 75 | |
| 76 // Reset the fonts of all the buttons. |special_font| is used for the buttons | |
| 77 // that toggle the layout. | |
| 78 void ResetFonts(const gfx::FontList& button_font, | |
| 79 const gfx::FontList& special_font); | |
| 80 | |
| 81 // views::ButtonListener: | |
| 82 virtual void ButtonPressed(views::Button* sender, | |
| 83 const ui::Event& event) override; | |
| 84 | |
| 85 KeyboardDelegate* delegate_; | |
| 86 | |
| 87 // Maximium number of keys in a row. Determined from |rows_|. | |
| 88 int max_keys_in_row_; | |
| 89 | |
| 90 KeyboardLayout keyboard_layout_; | |
| 91 | |
| 92 std::vector<const Row*> rows_; | |
| 93 | |
| 94 gfx::Size last_layout_size_; | |
| 95 | |
| 96 gfx::FontList button_font_; | |
| 97 | |
| 98 DISALLOW_COPY_AND_ASSIGN(KeyboardView); | |
| 99 }; | |
| 100 | |
| 101 } // namespace examples | |
| 102 } // namespace mojo | |
| 103 | |
| 104 #endif // EXAMPLES_KEYBOARD_KEYBOARD_VIEW_H_ | |
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