Better handle SDL_TEXTINPUT events

apps/openmw/mwgui/loadingscreen.cpp

@@ -10,6 +10,7 @@
 #include "../mwbase/world.hpp"
 
 #include "../mwbase/windowmanager.hpp"
+#include "../mwbase/inputmanager.hpp"
 
 namespace MWGui
 {
@@ -126,7 +127,7 @@ namespace MWGui
 
             // always update input before rendering something, otherwise mygui goes crazy when something was entered in the frame before
             // (e.g. when using "coc" console command, it would enter an infinite loop and crash due to overflow)
-            //MWBase::Environment::get().getInputManager()->update(0, true);
+            MWBase::Environment::get().getInputManager()->update(0, true);
 
             Ogre::CompositorChain* chain = Ogre::CompositorManager::getSingleton().getCompositorChain(mWindow->getViewport(0));
 

apps/openmw/mwinput/inputmanagerimp.cpp

@@ -23,6 +23,65 @@
 
 using namespace ICS;
 
+namespace
+{
+    std::vector<unsigned long> utf8ToUnicode(const std::string& utf8)
+    {
+        std::vector<unsigned long> unicode;
+        size_t i = 0;
+        while (i < utf8.size())
+        {
+            unsigned long uni;
+            size_t todo;
+            unsigned char ch = utf8[i++];
+            if (ch <= 0x7F)
+            {
+                uni = ch;
+                todo = 0;
+            }
+            else if (ch <= 0xBF)
+            {
+                throw std::logic_error("not a UTF-8 string");
+            }
+            else if (ch <= 0xDF)
+            {
+                uni = ch&0x1F;
+                todo = 1;
+            }
+            else if (ch <= 0xEF)
+            {
+                uni = ch&0x0F;
+                todo = 2;
+            }
+            else if (ch <= 0xF7)
+            {
+                uni = ch&0x07;
+                todo = 3;
+            }
+            else
+            {
+                throw std::logic_error("not a UTF-8 string");
+            }
+            for (size_t j = 0; j < todo; ++j)
+            {
+                if (i == utf8.size())
+                    throw std::logic_error("not a UTF-8 string");
+                unsigned char ch = utf8[i++];
+                if (ch < 0x80 || ch > 0xBF)
+                    throw std::logic_error("not a UTF-8 string");
+                uni <<= 6;
+                uni += ch & 0x3F;
+            }
+            if (uni >= 0xD800 && uni <= 0xDFFF)
+                throw std::logic_error("not a UTF-8 string");
+            if (uni > 0x10FFFF)
+                throw std::logic_error("not a UTF-8 string");
+            unicode.push_back(uni);
+        }
+        return unicode;
+    }
+}
+
 namespace MWInput
 {
     InputManager::InputManager(OEngine::Render::OgreRenderer &ogre,
@@ -422,11 +481,19 @@ namespace MWInput
 
         OIS::KeyCode kc = mInputManager->sdl2OISKeyCode(arg.keysym.sym);
 
-        MyGUI::InputManager::getInstance().injectKeyPress(MyGUI::KeyCode::Enum(kc), text);
-
+        if (kc != OIS::KC_UNASSIGNED)
+            MyGUI::InputManager::getInstance().injectKeyPress(MyGUI::KeyCode::Enum(kc), 0);
         return true;
     }
 
+    void InputManager::textInput(const SDL_TextInputEvent &arg)
+    {
+        const char* text = &arg.text[0];
+        std::vector<unsigned long> unicode = utf8ToUnicode(std::string(text));
+        for (std::vector<unsigned long>::iterator it = unicode.begin(); it != unicode.end(); ++it)
+            MyGUI::InputManager::getInstance().injectKeyPress(MyGUI::KeyCode::None, *it);
+    }
+
     bool InputManager::keyReleased(const SDL_KeyboardEvent &arg )
     {
         mInputBinder->keyReleased (arg);

apps/openmw/mwinput/inputmanagerimp.hpp

@@ -88,6 +88,7 @@ namespace MWInput
     public:
         virtual bool keyPressed(const SDL_KeyboardEvent &arg );
         virtual bool keyReleased( const SDL_KeyboardEvent &arg );
+        virtual void textInput (const SDL_TextInputEvent &arg);
 
         virtual bool mousePressed( const SDL_MouseButtonEvent &arg, Uint8 id );
         virtual bool mouseReleased( const SDL_MouseButtonEvent &arg, Uint8 id );

extern/sdl4ogre/events.h

@@ -35,6 +35,7 @@ class KeyListener
 {
 public:
     virtual ~KeyListener() {}
+    virtual void textInput (const SDL_TextInputEvent& arg) {}
     virtual bool keyPressed(const SDL_KeyboardEvent &arg) = 0;
     virtual bool keyReleased(const SDL_KeyboardEvent &arg) = 0;
 };

extern/sdl4ogre/sdlinputwrapper.cpp

@@ -67,12 +67,15 @@ namespace SFO
                     break;
                 case SDL_KEYDOWN:
                     if (!evt.key.repeat)
-                        _handleKeyPress(evt.key);
+                        mKeyboardListener->keyPressed(evt.key);
                     break;
                 case SDL_KEYUP:
                     if (!evt.key.repeat)
                         mKeyboardListener->keyReleased(evt.key);
                     break;
+                case SDL_TEXTINPUT:
+                    mKeyboardListener->textInput(evt.text);
+                    break;
                 case SDL_WINDOWEVENT:
                     handleWindowEvent(evt);
                     break;
@@ -220,74 +223,6 @@ namespace SFO
         return pack_evt;
     }
 
-    void InputWrapper::_handleKeyPress(SDL_KeyboardEvent &evt)
-    {
-        //SDL keyboard events are followed by the actual text those keys would generate
-        //to account for languages that require multiple keystrokes to produce a key.
-        //Look for an event immediately following ours, assuming each key produces exactly
-        //one character or none at all.
-
-        //TODO: Check if this works properly for multibyte symbols
-        //do we have to worry about endian-ness?
-        //for that matter, check if we even need to do any of this.
-
-        SDL_Event text_evts[1];
-        if(SDL_PeepEvents(text_evts, 1, SDL_GETEVENT, SDL_TEXTINPUT, SDL_TEXTINPUT) != 0)
-        {
-            if(strlen(text_evts[0].text.text) != 0)
-            {
-                const unsigned char* symbol = reinterpret_cast<unsigned char*>(&(text_evts[0].text.text[0]));
-                evt.keysym.unicode = _UTF8ToUTF32(symbol);
-            }
-        }
-
-        mKeyboardListener->keyPressed(evt);
-    }
-
-    //Lifted from OIS' LinuxKeyboard.cpp
-    Uint32 InputWrapper::_UTF8ToUTF32(const unsigned char *buf)
-    {
-        unsigned char FirstChar = buf[0];
-
-        //it's an ascii char, bail out early.
-        if(FirstChar < 128)
-            return FirstChar;
-
-        Uint32 val = 0;
-        Sint32 len = 0;
-
-        if((FirstChar & 0xE0) == 0xC0) //2 Chars
-        {
-            len = 2;
-            val = FirstChar & 0x1F;
-        }
-        else if((FirstChar & 0xF0) == 0xE0) //3 Chars
-        {
-            len = 3;
-            val = FirstChar & 0x0F;
-        }
-        else if((FirstChar & 0xF8) == 0xF0) //4 Chars
-        {
-            len = 4;
-            val = FirstChar & 0x07;
-        }
-        else if((FirstChar & 0xFC) == 0xF8) //5 Chars
-        {
-            len = 5;
-            val = FirstChar & 0x03;
-        }
-        else // if((FirstChar & 0xFE) == 0xFC) //6 Chars
-        {
-            len = 6;
-            val = FirstChar & 0x01;
-        }
-
-        for(int i = 1; i < len; i++)
-            val = (val << 6) | (buf[i] & 0x3F);
-
-        return val;
-    }
-
     OIS::KeyCode InputWrapper::sdl2OISKeyCode(SDL_Keycode code)
     {
         OIS::KeyCode kc = OIS::KC_UNASSIGNED;
@@ -296,8 +231,6 @@ namespace SFO
 
         if(ois_equiv != mKeyMap.end())
             kc = ois_equiv->second;
-        else
-            std::cerr << "Couldn't find OIS key for " << code << std::endl;
 
         return kc;
     }

extern/sdl4ogre/sdlinputwrapper.hpp

@@ -42,8 +42,6 @@ namespace SFO
         void _wrapMousePointer(const SDL_MouseMotionEvent &evt);
         MouseMotionEvent _packageMouseMotion(const SDL_Event& evt);
 
-        void _handleKeyPress(SDL_KeyboardEvent& evt);
-        Uint32 _UTF8ToUTF32(const unsigned char *buf);
         void _setupOISKeys();
 
         SFO::MouseListener* mMouseListener;