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4741
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1 #include "IMM.hpp"
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2 #include <stdexcept>
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3
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4 IMM::IMM() : my_COM_Initialized(false),
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5 my_Thread_Manager(0),
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6 my_Window(0),
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7 my_Context(0),
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8 my_HKL(0),
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9 my_Vertical_Candidates(false)
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10 {
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11
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12 }
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13
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14 IMM::~IMM()
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15 {
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16 Finalize();
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17 }
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18
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19 void IMM::Initialize(HWND Window)
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20 {
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21 Finalize();
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22
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23 my_Window = Window;
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24
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25 if (SUCCEEDED(CoInitializeEx(NULL, COINIT_APARTMENTTHREADED)))
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26 {
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27 my_COM_Initialized = true;
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28 if (SUCCEEDED(CoCreateInstance(CLSID_TF_ThreadMgr, NULL, CLSCTX_INPROC_SERVER, IID_ITfThreadMgr, reinterpret_cast<LPVOID *>(&my_Thread_Manager))))
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29 {
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30 ITfDocumentMgr *Document_Manager = 0;
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31 if (FAILED(my_Thread_Manager->AssociateFocus(Window, NULL, &Document_Manager)))
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32 printf("Warning: ITfThreadMgr->AssociateFocus failed\n");
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33
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34 if (Document_Manager)
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35 Document_Manager->Release();
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36 }
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37 else
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38 printf("Warning: Failed to create ITfThreadMgr instance\n");
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39 }
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40 else
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41 printf("Warning: Failed to initialize COM\n");
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42
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43 ImmDisableTextFrameService(-1);
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44
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45 my_Context = ImmGetContext(my_Window);
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46 if (!ImmReleaseContext(my_Window, my_Context))
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47 throw std::runtime_error("Error releasing context");
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48
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49 if (!my_Context)
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50 throw std::runtime_error("No context");
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51
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52 Update_Input_Locale();
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53 }
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54
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55 void IMM::Finalize()
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56 {
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57 if (my_Thread_Manager)
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58 {
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59 my_Thread_Manager->Release();
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60 my_Thread_Manager = 0;
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61 }
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62 if (my_COM_Initialized)
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63 {
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64 CoUninitialize();
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65 my_COM_Initialized = false;
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66 }
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67 }
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68
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69 #define GET_LANG(hkl) LOWORD((hkl))
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70 #define GET_PRIMLANG(hkl) ((WORD)PRIMARYLANGID(GET_LANG((hkl))))
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71 #define GET_SUBLANG(hkl) SUBLANGID(GET_LANG((hkl)))
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72
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73 void IMM::Update_Input_Locale()
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74 {
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75 static HKL Previous_HKL = 0;
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76 my_HKL = GetKeyboardLayout(0);
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77 if (Previous_HKL == my_HKL)
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78 return;
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79
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80 Previous_HKL = my_HKL;
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81 my_Vertical_Candidates = false;
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82 switch (GET_PRIMLANG(my_HKL))
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83 {
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84 case LANG_CHINESE:
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85 my_Vertical_Candidates = true;
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86 switch (GET_SUBLANG(my_HKL))
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87 {
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88 case SUBLANG_CHINESE_SIMPLIFIED:
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89 my_Vertical_Candidates = false;
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90 break;
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91 }
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92 break;
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93 case LANG_JAPANESE:
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94 my_Vertical_Candidates = true;
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95 break;
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96 }
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97 }
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98
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99 LRESULT IMM::Handle_Message(HWND Window, UINT Message, WPARAM wParam, LPARAM lParam, bool &Ate)
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100 {
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101 Ate = false;
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102 switch (Message)
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103 {
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104 case WM_INPUTLANGCHANGE:
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105 Update_Input_Locale();
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106 break;
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107 case WM_IME_SETCONTEXT:
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108 lParam = 0;
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109 return DefWindowProcW(my_Window, Message, wParam, lParam);
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110 break;
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111 case WM_IME_STARTCOMPOSITION:
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112 Ate = true;
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113 break;
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114 case WM_IME_COMPOSITION:
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115 {
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116 Ate = true;
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117 HIMC Context = ImmGetContext(Window);
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118 if (!Context)
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119 break;
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120
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121 if (lParam & GCS_RESULTSTR)
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122 {
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123 LONG Length = ImmGetCompositionStringW(Context, GCS_RESULTSTR, 0, 0);
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124 std::wstring Composition(Length / sizeof(wchar_t), 0);
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125 Length = ImmGetCompositionStringW(Context, GCS_RESULTSTR, &Composition[0], Composition.size() * sizeof(Composition[0]));
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126 printf("GCS_RESULTSTR: ");
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127 for (LONG i = 0; i < Length / sizeof(wchar_t); ++i)
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128 printf("U+%04X ", Composition[i]);
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129
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130 printf("\n");
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131 }
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132 if (lParam & GCS_COMPSTR)
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133 {
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134 LONG Length = ImmGetCompositionStringW(Context, GCS_COMPSTR, 0, 0);
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135 std::wstring Composition(Length / sizeof(wchar_t), 0);
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136 Length = ImmGetCompositionStringW(Context, GCS_COMPSTR, &Composition[0], Composition.size() * sizeof(Composition[0]));
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137 printf("GCS_COMPSTR: ");
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138 for (LONG i = 0; i < Length / sizeof(wchar_t); ++i)
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139 printf("U+%04X ", Composition[i]);
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140
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141 printf("\n");
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142 }
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143 ImmReleaseContext(Window, Context);
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144 }
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145 break;
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146 case WM_IME_ENDCOMPOSITION:
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147 break;
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148 case WM_IME_NOTIFY:
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149 switch (wParam)
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150 {
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151 case IMN_SETCONVERSIONMODE:
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152
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153 break;
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154 case IMN_SETOPENSTATUS:
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155 Update_Input_Locale();
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156 break;
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157 case IMN_OPENCANDIDATE:
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158 case IMN_CHANGECANDIDATE:
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159 Ate = true;
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160 break;
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161 }
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162 break;
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163 }
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164 return 0;
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165 }
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