Altered keyboard driver to correctly support Unicode
[tpg/acess2.git] / Kernel / drv / vterm.c
index f8a649a..575d71f 100644 (file)
 // === CONSTANTS ===
 #define VERSION        ((0<<8)|(50))
 
-#define        NUM_VTS 4
+#define        NUM_VTS 7
 #define MAX_INPUT_CHARS32      64
 #define MAX_INPUT_CHARS8       (MAX_INPUT_CHARS32*4)
 #define VT_SCROLLBACK  1       // 2 Screens of text
 #define DEFAULT_OUTPUT "VGA"
-//#define DEFAULT_OUTPUT       "/Devices/BochsGA"
+//#define DEFAULT_OUTPUT       "BochsGA"
 #define DEFAULT_INPUT  "PS2Keyboard"
 #define        DEFAULT_WIDTH   80
 #define        DEFAULT_HEIGHT  25
 #define        DEFAULT_COLOUR  (VT_COL_BLACK|(0xAAA<<16))
 
 #define        VT_FLAG_HIDECSR 0x01
+#define        VT_FLAG_HASFB   0x10    //!< Set if the VTerm has requested the Framebuffer
 
 enum eVT_InModes {
        VT_INMODE_TEXT8,        // UTF-8 Text Mode (VT100 Emulation)
@@ -55,6 +56,9 @@ typedef struct {
        tVFS_Node       Node;
 } tVTerm;
 
+// === IMPORTS ===
+extern void    Debug_SetKTerminal(char *File);
+
 // === PROTOTYPES ===
  int   VT_Install(char **Arguments);
 char   *VT_ReadDir(tVFS_Node *Node, int Pos);
@@ -69,6 +73,7 @@ void  VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
  int   VT_int_ParseEscape(tVTerm *Term, char *Buffer);
 void   VT_int_PutChar(tVTerm *Term, Uint32 Ch);
 void   VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
+void   VT_int_ChangeMode(tVTerm *Term, int NewMode);
 
 // === CONSTANTS ===
 const Uint16   caVT100Colours[] = {
@@ -163,8 +168,7 @@ int VT_Install(char **Arguments)
                gVT_Terminals[i].WritePos = 0;
                gVT_Terminals[i].ViewPos = 0;
                
-               gVT_Terminals[i].Buffer = malloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK*sizeof(tVT_Char) );
-               memset( gVT_Terminals[i].Buffer, 0, DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK*sizeof(tVT_Char) );
+               gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
                
                gVT_Terminals[i].Name[0] = '0'+i;
                gVT_Terminals[i].Name[1] = '\0';
@@ -180,6 +184,9 @@ int VT_Install(char **Arguments)
        // Add to DevFS
        DevFS_AddDevice( &gVT_DrvInfo );
        
+       // Set kernel output to VT0
+       Debug_SetKTerminal("/Devices/VTerm/0");
+       
        return 0;
 }
 
@@ -190,7 +197,6 @@ int VT_Install(char **Arguments)
 void VT_InitOutput()
 {
        giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
-       LOG("giVT_OutputDevHandle = %x\n", giVT_OutputDevHandle);
        VT_SetTerminal( 0 );
 }
 
@@ -201,7 +207,6 @@ void VT_InitOutput()
 void VT_InitInput()
 {
        giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
-       LOG("giVT_InputDevHandle = %x\n", giVT_InputDevHandle);
        if(giVT_InputDevHandle == -1)   return ;
        VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
 }
@@ -314,13 +319,10 @@ Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
                while(pos < Length)
                {
                        while(term->InputRead == term->InputWrite)      Threads_Yield();
-                       while(term->InputRead != term->InputWrite)
-                       {
-                               ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
-                               pos ++;
-                               term->InputRead ++;
-                               term->InputRead %= MAX_INPUT_CHARS32;
-                       }
+                       ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
+                       pos ++;
+                       term->InputRead ++;
+                       term->InputRead %= MAX_INPUT_CHARS32;
                }
                break;
        }
@@ -367,7 +369,11 @@ int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
        // Get/Set the mode (and apply any changes)
        case TERM_IOCTL_MODETYPE:
                if(Data == NULL)        return term->Mode;
-               term->Mode = *iData;
+               
+               if(term->Mode != *iData) {
+                       VT_int_ChangeMode(term, *iData);
+               }
+               
                // Update the screen dimensions
                if(giVT_CurrentTerminal == Node->Inode)
                        VT_SetTerminal( giVT_CurrentTerminal );
@@ -420,6 +426,13 @@ void VT_SetTerminal(int ID)
        gVT_Terminals[ ID ].RealWidth = mode.width;
        gVT_Terminals[ ID ].RealHeight = mode.height;
        VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETMODE, &modeNum );
+       
+       // Update current terminal ID
+       Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
+       giVT_CurrentTerminal = ID;
+       
+       // Update the screen
+       VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
 }
 
 /**
@@ -467,27 +480,30 @@ void VT_KBCallBack(Uint32 Codepoint)
                        break;
                switch(Codepoint)
                {
-               case KEY_F1:
-                       giVT_CurrentTerminal = 0;
-                       break;
-               case KEY_F2:
-                       giVT_CurrentTerminal = 0;
-                       break;
-               case KEY_F3:
-                       giVT_CurrentTerminal = 0;
-                       break;
-               case KEY_F4:
-                       giVT_CurrentTerminal = 0;
-                       break;
+               case KEY_F1:    VT_SetTerminal(0);      return;
+               case KEY_F2:    VT_SetTerminal(1);      return;
+               case KEY_F3:    VT_SetTerminal(2);      return;
+               case KEY_F4:    VT_SetTerminal(3);      return;
+               case KEY_F5:    VT_SetTerminal(4);      return;
+               case KEY_F6:    VT_SetTerminal(5);      return;
+               case KEY_F7:    VT_SetTerminal(6);      return;
+               case KEY_F8:    VT_SetTerminal(7);      return;
+               case KEY_F9:    VT_SetTerminal(8);      return;
+               case KEY_F10:   VT_SetTerminal(9);      return;
+               case KEY_F11:   VT_SetTerminal(10);     return;
+               case KEY_F12:   VT_SetTerminal(11);     return;
+               case KEY_PGUP:
+                       return;
+               case KEY_PGDOWN:
+                       return;
                }
-               return;
        }
        
        // Encode key
        if(term->Mode == TERM_MODE_TEXT)
        {
                Uint8   buf[6] = {0};
-                int    len;
+                int    len = 0;
                
                // Ignore Modifer Keys
                if(Codepoint > KEY_MODIFIERS)   return;
@@ -496,20 +512,43 @@ void VT_KBCallBack(Uint32 Codepoint)
                switch(Codepoint)
                {
                case KEY_LEFT:
-                       buf[0] = '\x1B';        buf[1] = '[';
-                       buf[2] = 'D';   len = 3;
+                       buf[0] = '\x1B';        buf[1] = '[';   buf[2] = 'D';
+                       len = 3;
                        break;
                case KEY_RIGHT:
-                       buf[0] = '\x1B';        buf[1] = '[';
-                       buf[2] = 'C';   len = 3;
+                       buf[0] = '\x1B';        buf[1] = '[';   buf[2] = 'C';
+                       len = 3;
+                       break;
+               case KEY_UP:
+                       buf[0] = '\x1B';        buf[1] = '[';   buf[2] = 'A';
+                       len = 3;
                        break;
+               case KEY_DOWN:
+                       buf[0] = '\x1B';        buf[1] = '[';   buf[2] = 'B';
+                       len = 3;
+                       break;
+               
+               case KEY_PGUP:
+                       buf[0] = '\x1B';        buf[1] = '[';   buf[2] = '5';   // Some overline also
+                       //len = 4;      // Commented out until I'm sure
+                       break;
+               case KEY_PGDOWN:
+                       len = 0;
+                       break;
+               
+               // Attempt to encode in UTF-8
                default:
                        len = WriteUTF8( buf, Codepoint );
-                       //Log("Codepoint = 0x%x", Codepoint);
+                       if(len == 0) {
+                               Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
+                       }
                        break;
                }
                
-               //Log("len = %i, buf = %s", len, buf);
+               if(len == 0) {
+                       // Unprintable / Don't Pass
+                       return;
+               }
                
                // Write
                if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
@@ -637,7 +676,6 @@ int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
                                        Term->WritePos -= Term->WritePos % Term->Width;
                                else
                                        Term->WritePos -= tmp;
-                               Log("Left by %i", tmp);
                                break;
                        
                        // Right
@@ -808,24 +846,62 @@ void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
  */
 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
 {
-       if(UpdateAll) {
+       // Only update if this is the current terminal
+       if( Term != &gVT_Terminals[giVT_CurrentTerminal] )      return;
+       
+       if( Term->Mode == TERM_MODE_TEXT )
+       {
+               if(UpdateAll) {
+                       VFS_WriteAt(
+                               giVT_OutputDevHandle,
+                               0,
+                               Term->Width*Term->Height*sizeof(tVT_Char),
+                               &Term->Text[Term->ViewPos]
+                               );
+               } else {
+                        int    pos = Term->WritePos - Term->WritePos % Term->Width;
+                       VFS_WriteAt(
+                               giVT_OutputDevHandle,
+                               (pos - Term->ViewPos)*sizeof(tVT_Char),
+                               Term->Width*sizeof(tVT_Char),
+                               &Term->Text[pos]
+                               );
+               }
+       }
+       else
+       {
                VFS_WriteAt(
                        giVT_OutputDevHandle,
                        0,
-                       Term->Width*Term->Height*sizeof(tVT_Char),
-                       &Term->Text[Term->ViewPos]
-                       );
-       } else {
-                int    pos = Term->WritePos - Term->WritePos % Term->Width;
-               VFS_WriteAt(
-                       giVT_OutputDevHandle,
-                       (pos - Term->ViewPos)*sizeof(tVT_Char),
-                       Term->Width*sizeof(tVT_Char),
-                       &Term->Text[pos]
+                       Term->Width*Term->Height*sizeof(Uint32),
+                       &Term->Buffer
                        );
        }
 }
 
+/**
+ * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
+ * \brief Change the mode of a VTerm
+ */
+void VT_int_ChangeMode(tVTerm *Term, int NewMode)
+{      
+       switch(NewMode)
+       {
+       case TERM_MODE_TEXT:
+               free(Term->Buffer);
+               Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
+               break;
+       case TERM_MODE_FB:
+               free(Term->Text);
+               Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
+               break;
+       case TERM_MODE_OPENGL:
+               return;
+       }
+       
+       Term->Mode = NewMode;
+}
+
 // ---
 // Font Render
 // ---
@@ -841,7 +917,7 @@ void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
 Uint8  *VT_Font_GetChar(Uint32 Codepoint);
 
 // === GLOBALS ===
-int    giVT_CharWidth = FONT_WIDTH;
+int    giVT_CharWidth = FONT_WIDTH+1;
 int    giVT_CharHeight = FONT_HEIGHT;
 
 // === CODE ===
@@ -854,13 +930,14 @@ void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint3
        Uint8   *font;
        Uint32  *buf = Buffer;
         int    x, y;
+       
        font = VT_Font_GetChar(Codepoint);
        
        for(y = 0; y < FONT_HEIGHT; y ++)
        {
                for(x = 0; x < FONT_WIDTH; x ++)
                {
-                       if(*font & (1 << (FONT_WIDTH-x)))
+                       if(*font & (1 << (FONT_WIDTH-x-1)))
                                buf[x] = FGC;
                        else
                                buf[x] = BGC;

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