Optionally output simplified Chinese characters on the fly.

ChewingTextService/ChewingTextService.cpp

@@ -60,6 +60,7 @@ TextService::TextService(ImeModule* module):
 	showingCandidates_(false),
 	langMode_(-1),
 	shapeMode_(-1),
+	outputSimpChinese_(false),
 	lastKeyDownCode_(0),
 	messageWindow_(NULL),
 	messageTimerId_(0),
@@ -354,6 +355,11 @@ bool TextService::onKeyDown(Ime::KeyEvent& keyEvent, Ime::EditSession* session)
 		char* buf = ::chewing_commit_String(chewingContext_);
 		std::wstring wbuf = utf8ToUtf16(buf);
 		::chewing_free(buf);
+
+		// FIXME: this should be per-instance rather than a global setting.
+		if(outputSimpChinese_) // convert output to simplified Chinese
+			wbuf = tradToSimpChinese(wbuf);
+
 		// commit the text, replace currently selected text with our commit string
 		setCompositionString(session, wbuf.c_str(), wbuf.length());
 
@@ -481,6 +487,9 @@ bool TextService::onCommand(UINT id, CommandType type) {
 			onConfigure(HWND_DESKTOP);
 		}
 		break;
+	case ID_OUTPUT_SIMP_CHINESE: // toggle output traditional or simplified Chinese
+		toggleSimplifiedChinese();
+		break;
 	case ID_ABOUT: // show about dialog
 		if(!isImmersive()) { // only do this in desktop app mode
 			// show about dialog
@@ -584,6 +593,12 @@ void TextService::initChewingContext() {
 		if(cfg.defaultFullSpace)
 			::chewing_set_ShapeMode(chewingContext_, FULLSHAPE_MODE);
 	}
+
+	outputSimpChinese_ = config().outputSimpChinese;
+	// update popup menu to check/uncheck the simplified Chinese item
+	DWORD checkFlags = outputSimpChinese_ ?  MF_CHECKED : MF_UNCHECKED;
+	::CheckMenuItem(popupMenu_, ID_OUTPUT_SIMP_CHINESE, MF_BYCOMMAND|checkFlags);
+
 	applyConfig();
 }
 
@@ -661,6 +676,14 @@ void TextService::toggleShapeMode() {
 	}
 }
 
+// toggle output traditional or simplified Chinese
+void TextService::toggleSimplifiedChinese() {
+	outputSimpChinese_ = !outputSimpChinese_;
+	// update popup menu to check/uncheck the simplified Chinese item
+	DWORD checkFlags = outputSimpChinese_ ?  MF_CHECKED : MF_UNCHECKED;
+	::CheckMenuItem(popupMenu_, ID_OUTPUT_SIMP_CHINESE, MF_BYCOMMAND|checkFlags);
+}
+
 void TextService::updateCandidates(Ime::EditSession* session) {
 	assert(candidateWindow_);
 	candidateWindow_->clear();

ChewingTextService/ChewingTextService.h

@@ -100,6 +100,7 @@ class TextService: public Ime::TextService {
 
 	void toggleLanguageMode(); // toggle between English and Chinese
 	void toggleShapeMode(); // toggle between full shape and half shape
+	void toggleSimplifiedChinese(); // toggle output traditional or simplified Chinese
 
 private:
 	ChewingContext* chewingContext_;
@@ -114,6 +115,7 @@ class TextService: public Ime::TextService {
 	Ime::LangBarButton* imeModeIcon_; // IME mode icon, a special language button (Windows 8 only)
 	HMENU popupMenu_;
 
+	bool outputSimpChinese_; // output simplified Chinese
 	int langMode_;
 	int shapeMode_;
 	UINT lastKeyDownCode_;

libIME/Utils.cpp

@@ -19,6 +19,7 @@
 
 #include "Utils.h"
 #include <Windows.h>
+#include <Winnls.h>
 
 std::wstring utf8ToUtf16(const char* text) {
 	std::wstring wtext;
@@ -41,3 +42,12 @@ std::string utf16ToUtf8(const wchar_t* wtext) {
 	}
 	return text;
 }
+
+std::wstring tradToSimpChinese(const std::wstring& trad) {
+	int len = ::LCMapStringW(0x0404, LCMAP_SIMPLIFIED_CHINESE, trad.c_str(), trad.length(), NULL, 0);
+	std::wstring simp;
+	simp.resize(len);
+	if(::LCMapStringW(0x0404, LCMAP_SIMPLIFIED_CHINESE, trad.c_str(), trad.length(), &simp[0], len))
+		return simp;
+	return trad;
+}

libIME/Utils.h

@@ -27,4 +27,7 @@ std::wstring utf8ToUtf16(const char* text);
 
 std::string utf16ToUtf8(const wchar_t* wtext);
 
+// convert traditional Chinese to simplified Chinese
+std::wstring tradToSimpChinese(const std::wstring& trad);
+
 #endif