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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 <xkbcommon/xkbcommon.h> | |
9 | |
10 #include "base/containers/hash_tables.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "base/strings/string16.h" | |
13 #include "ui/events/ozone/layout/events_ozone_layout_export.h" | |
14 #include "ui/events/ozone/layout/keyboard_layout_engine.h" | |
15 | |
16 namespace ui { | |
17 | |
18 class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyCodeConverter { | |
spang
2014/12/08 22:47:29
move to separate header
kpschoedel
2014/12/15 19:48:46
Done.
| |
19 public: | |
20 XkbKeyCodeConverter(); | |
21 virtual ~XkbKeyCodeConverter(); | |
22 xkb_keycode_t InvalidXkbKeyCode() const { return invalid_xkb_keycode_; } | |
23 virtual xkb_keycode_t DomCodeToXkbKeyCode(DomCode dom_code) const = 0; | |
24 | |
25 protected: | |
26 xkb_keycode_t invalid_xkb_keycode_; | |
27 }; | |
28 | |
29 class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyboardLayoutEngine | |
30 : public KeyboardLayoutEngine { | |
31 public: | |
32 XkbKeyboardLayoutEngine(const XkbKeyCodeConverter& converter); | |
33 virtual ~XkbKeyboardLayoutEngine(); | |
34 | |
35 // KeyboardLayoutEngine: | |
36 virtual bool CanSetCurrentLayout() const override; | |
37 virtual bool SetCurrentLayoutByName(const std::string& layout_name) override; | |
38 | |
39 virtual bool UsesISOLevel5Shift() const override; | |
40 virtual bool UsesAltGr() const override; | |
41 | |
42 virtual bool Lookup(DomCode dom_code, | |
43 int flags, | |
44 DomKey* dom_key, | |
45 base::char16* character, | |
46 KeyboardCode* key_code) const override; | |
47 | |
48 private: | |
49 // Sets a new XKB keymap, updating object fields. | |
50 void SetKeymap(xkb_keymap* keymap); | |
51 | |
52 // Returns the XKB modifiers flags corresponding to the given EventFlags. | |
53 xkb_mod_mask_t EventFlagsToXkbFlags(int ui_flags) const; | |
54 | |
55 // Determines the XKB KeySym and character associated with a key. | |
56 // Returns true on success. | |
57 bool XkbLookup(xkb_keycode_t xkb_keycode, | |
58 xkb_mod_mask_t xkb_flags, | |
59 xkb_keysym_t* xkb_keysym, | |
60 base::char16* character) const; | |
61 | |
62 // Maps DomCode to xkb_keycode_t. | |
63 const XkbKeyCodeConverter& key_code_converter_; | |
64 | |
65 // libxkbcommon uses explicit reference counting for its structures, | |
spang
2014/12/08 22:47:29
Can you move these general-purpose typedefs to a n
kpschoedel
2014/12/15 19:48:46
OK, though I wouldn't call them general-purpose —
| |
66 // so we need to trigger its cleanup. | |
67 struct XkbContextDeleter { | |
68 void operator()(xkb_context* context) { xkb_context_unref(context); } | |
69 }; | |
70 scoped_ptr<xkb_context, XkbContextDeleter> xkb_context_; | |
71 struct XkbstateDeleter { | |
72 void operator()(xkb_state* state) { xkb_state_unref(state); } | |
73 }; | |
74 scoped_ptr<xkb_state, XkbstateDeleter> xkb_state_; | |
75 | |
76 // Table for EventFlagsToXkbFlags(). | |
77 struct XkbFlagMapEntry { | |
78 int ui_flag; | |
79 xkb_mod_mask_t xkb_flag; | |
80 }; | |
81 std::vector<XkbFlagMapEntry> xkb_flag_map_; | |
82 }; | |
83 | |
84 } // namespace ui | |
85 | |
86 #endif // UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEYBOARD_LAYOUT_ENGINE_H_ | |
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