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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 UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEYBOARD_LAYOUT_ENGINE_H_ | |
6 #define UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEYBOARD_LAYOUT_ENGINE_H_ | |
7 | |
8 #include "base/containers/hash_tables.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/strings/string16.h" | |
11 #include "ui/events/ozone/layout/events_ozone_layout_export.h" | |
12 #include "ui/events/ozone/layout/keyboard_layout_engine.h" | |
13 #include "ui/events/ozone/layout/xkb/xkb.h" | |
14 | |
15 namespace ui { | |
16 | |
17 #if defined(USE_X11) | |
18 using XkbKeyCode = decltype(XKeyEvent.keycode); | |
spang
2014/12/08 22:47:28
remove dead code
kpschoedel
2014/12/08 23:15:26
Done.
| |
19 using XkbFlags = decltype(XKeyEvent.state); | |
20 #else | |
21 using XkbKeyCode = xkb_keycode_t; | |
22 using XkbFlags = xkb_mod_mask_t; | |
23 using XkbKeySym = xkb_keysym_t; | |
24 #endif | |
25 | |
26 class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyCodeConverter { | |
27 public: | |
28 XkbKeyCodeConverter(); | |
29 virtual ~XkbKeyCodeConverter(); | |
30 XkbKeyCode InvalidXkbKeyCode() const { return invalid_xkb_keycode_; } | |
31 virtual XkbKeyCode DomCodeToXkbKeyCode(DomCode dom_code) const = 0; | |
32 | |
33 protected: | |
34 XkbKeyCode invalid_xkb_keycode_; | |
35 }; | |
36 | |
37 class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyboardLayoutEngine | |
38 : public KeyboardLayoutEngine { | |
39 public: | |
40 XkbKeyboardLayoutEngine(const XkbKeyCodeConverter& converter); | |
41 virtual ~XkbKeyboardLayoutEngine(); | |
42 | |
43 // KeyboardLayoutEngine: | |
44 virtual bool CanSetCurrentLayout() const override; | |
45 virtual bool SetCurrentLayoutByName(const std::string& layout_name) override; | |
46 | |
47 virtual bool UsesISOLevel5Shift() const override; | |
48 virtual bool UsesAltGr() const override; | |
49 | |
50 virtual bool Lookup(DomCode dom_code, | |
51 int flags, | |
52 DomKey* dom_key, | |
53 base::char16* character, | |
54 KeyboardCode* key_code) const override; | |
55 | |
56 private: | |
57 #if !defined(USE_X11) | |
58 // Sets a new XKB keymap, updating object fields. | |
59 void SetKeymap(xkb_keymap* keymap); | |
60 #endif | |
61 | |
62 // Returns the XKB modifiers flags corresponding to the given EventFlags. | |
63 XkbFlags EventFlagsToXkbFlags(int ui_flags) const; | |
64 | |
65 // Determines the XKB KeySym and character associated with a key. | |
66 // Returns true on success. | |
67 bool XkbLookup(XkbKeyCode xkb_keycode, | |
68 XkbFlags xkb_flags, | |
69 XkbKeySym* xkb_keysym, | |
70 base::char16* character) const; | |
71 | |
72 // Maps DomCode to XkbKeyCode. | |
73 const XkbKeyCodeConverter& key_code_converter_; | |
74 | |
75 #if !defined(USE_X11) | |
76 // libxkbcommon uses explicit reference counting for its structures, | |
77 // so we need XXX | |
78 struct XkbContextDeleter { | |
79 void operator()(xkb_context* context) { xkb_context_unref(context); } | |
80 }; | |
81 scoped_ptr<xkb_context, XkbContextDeleter> xkb_context_; | |
82 struct XkbstateDeleter { | |
83 void operator()(xkb_state* state) { xkb_state_unref(state); } | |
84 }; | |
85 scoped_ptr<xkb_state, XkbstateDeleter> xkb_state_; | |
86 #endif | |
87 | |
88 // Table for EventFlagsToXkbFlags(). | |
89 struct XkbFlagMapEntry { | |
90 int ui_flag; | |
91 XkbFlags xkb_flag; | |
92 }; | |
93 std::vector<XkbFlagMapEntry> xkb_flag_map_; | |
94 }; | |
95 | |
96 } // namespace ui | |
97 | |
98 #endif // UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEYBOARD_LAYOUT_ENGINE_H_ | |
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