2 * Acess2 Virtual Terminal Driver
7 #include <tpl_drv_video.h>
8 #include <tpl_drv_keyboard.h>
9 #include <tpl_drv_terminal.h>
13 #define VERSION ((0<<8)|(50))
16 #define MAX_INPUT_CHARS32 64
17 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
18 #define VT_SCROLLBACK 1 // 2 Screens of text
19 #define DEFAULT_OUTPUT "VGA"
20 //#define DEFAULT_OUTPUT "BochsGA"
21 #define DEFAULT_INPUT "PS2Keyboard"
22 #define DEFAULT_WIDTH 80
23 #define DEFAULT_HEIGHT 25
24 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
26 #define VT_FLAG_HIDECSR 0x01
27 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
30 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
31 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
37 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
38 int Flags; //!< Flags (see VT_FLAG_*)
39 short Width; //!< Virtual Width
40 short Height; //!< Virtual Height
41 short RealWidth; //!< Real Width
42 short RealHeight; //!< Real Height
44 int ViewPos; //!< View Buffer Offset (Text Only)
45 int WritePos; //!< Write Buffer Offset (Text Only)
46 Uint32 CurColour; //!< Current Text Colour
47 char Name[2]; //!< Name of the terminal
49 int InputRead; //!< Input buffer read position
50 int InputWrite; //!< Input buffer write position
51 char InputBuffer[MAX_INPUT_CHARS8];
60 extern void Debug_SetKTerminal(char *File);
63 int VT_Install(char **Arguments);
64 char *VT_ReadDir(tVFS_Node *Node, int Pos);
65 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
66 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
67 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
68 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
69 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
70 void VT_SetTerminal(int ID);
71 void VT_KBCallBack(Uint32 Codepoint);
72 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
73 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
74 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
75 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
76 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
79 const Uint16 caVT100Colours[] = {
80 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
81 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
85 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
86 tDevFS_Driver gVT_DrvInfo = {
89 .Flags = VFS_FFLAG_DIRECTORY,
93 .ReadDir = VT_ReadDir,
94 .FindDir = VT_FindDir,
95 .IOCtl = VT_Root_IOCtl
99 tVTerm gVT_Terminals[NUM_VTS];
100 int giVT_CurrentTerminal = 0;
101 // --- Driver Handles ---
102 char *gsVT_OutputDevice = NULL;
103 char *gsVT_InputDevice = NULL;
104 int giVT_OutputDevHandle = -2;
105 int giVT_InputDevHandle = -2;
106 // --- Key States --- (Used for VT Switching/Magic Combos)
107 int gbVT_CtrlDown = 0;
108 int gbVT_AltDown = 0;
109 int gbVT_SysrqDown = 0;
113 * \fn int VT_Install(char **Arguments)
114 * \brief Installs the Virtual Terminal Driver
116 int VT_Install(char **Arguments)
118 char **args = Arguments;
125 for( ; (arg = *args); args++ )
127 if(arg[0] != '-') continue;
133 if(args[1] == NULL) break;
134 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
135 gsVT_OutputDevice = malloc(strlen(args[1])+1);
136 strcpy(gsVT_OutputDevice, args[1]);
142 if(args[1] == NULL) break;
143 if(gsVT_InputDevice) free(gsVT_InputDevice);
144 gsVT_InputDevice = malloc(strlen(args[1])+1);
145 strcpy(gsVT_InputDevice, args[1]);
154 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
155 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
157 LOG("Using '%s' as output", gsVT_OutputDevice);
158 LOG("Using '%s' as input", gsVT_InputDevice);
161 for( i = 0; i < NUM_VTS; i++ )
163 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
164 gVT_Terminals[i].Flags = 0;
165 gVT_Terminals[i].Width = DEFAULT_WIDTH;
166 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
167 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
168 gVT_Terminals[i].WritePos = 0;
169 gVT_Terminals[i].ViewPos = 0;
171 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
173 gVT_Terminals[i].Name[0] = '0'+i;
174 gVT_Terminals[i].Name[1] = '\0';
175 gVT_Terminals[i].Node.Inode = i;
176 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
177 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
179 gVT_Terminals[i].Node.Read = VT_Read;
180 gVT_Terminals[i].Node.Write = VT_Write;
181 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
185 DevFS_AddDevice( &gVT_DrvInfo );
187 // Set kernel output to VT0
188 Debug_SetKTerminal("/Devices/VTerm/0");
194 * \fn void VT_InitOutput()
195 * \brief Initialise Video Output
199 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
204 * \fn void VT_InitInput()
205 * \brief Initialises the input
209 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
210 if(giVT_InputDevHandle == -1) return ;
211 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
215 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
216 * \brief Read from the VTerm Directory
218 char *VT_ReadDir(tVFS_Node *Node, int Pos)
220 if(Pos < 0) return NULL;
221 if(Pos >= NUM_VTS) return NULL;
222 return strdup( gVT_Terminals[Pos].Name );
226 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
227 * \brief Find an item in the VTerm directory
229 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
233 //ENTER("pNode sName", Node, Name);
235 // Open the input and output files if needed
236 if(giVT_OutputDevHandle == -2) VT_InitOutput();
237 if(giVT_InputDevHandle == -2) VT_InitInput();
240 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
251 //LEAVE('p', &gVT_Terminals[num].Node);
252 return &gVT_Terminals[num].Node;
256 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
257 * \brief Control the VTerm Driver
259 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
264 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
265 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
266 case DRV_IOCTL_VERSION: return VERSION;
267 case DRV_IOCTL_LOOKUP: return 0;
269 case 4: // Get Video Driver
270 if(Data) strcpy(Data, gsVT_OutputDevice);
271 return strlen(gsVT_OutputDevice);
273 case 5: // Set Video Driver
274 if(!Data) return -EINVAL;
275 if(Threads_GetUID() != 0) return -EACCES;
279 free(gsVT_OutputDevice);
281 gsVT_OutputDevice = malloc(len+1);
282 strcpy(gsVT_OutputDevice, Data);
284 VFS_Close(giVT_OutputDevHandle);
285 giVT_OutputDevHandle = -1;
294 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
295 * \brief Read from a virtual terminal
297 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
300 tVTerm *term = &gVT_Terminals[ Node->Inode ];
302 // Check current mode
308 while(term->InputRead == term->InputWrite) Threads_Yield();
310 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
313 term->InputRead %= MAX_INPUT_CHARS8;
318 case TERM_MODE_OPENGL:
321 while(term->InputRead == term->InputWrite) Threads_Yield();
322 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
325 term->InputRead %= MAX_INPUT_CHARS32;
333 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
334 * \brief Write to a virtual terminal
336 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
338 tVTerm *term = &gVT_Terminals[ Node->Inode ];
340 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
346 VT_int_PutString(term, Buffer, Length);
355 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
356 * \brief Call an IO Control on a virtual terminal
358 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
361 tVTerm *term = Node->ImplPtr;
364 case DRV_IOCTL_TYPE: return DRV_TYPE_TERMINAL;
365 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
366 case DRV_IOCTL_VERSION: return VERSION;
367 case DRV_IOCTL_LOOKUP: return 0;
369 // Get/Set the mode (and apply any changes)
370 case TERM_IOCTL_MODETYPE:
371 if(Data == NULL) return term->Mode;
373 if(term->Mode != *iData) {
374 VT_int_ChangeMode(term, *iData);
377 // Update the screen dimensions
378 if(giVT_CurrentTerminal == Node->Inode)
379 VT_SetTerminal( giVT_CurrentTerminal );
382 // Get/set the terminal width
383 case TERM_IOCTL_WIDTH:
384 if(Data == NULL) return term->Width;
385 term->Width = *iData;
388 // Get/set the terminal height
389 case TERM_IOCTL_HEIGHT:
390 if(Data == NULL) return term->Height;
391 term->Height = *iData;
401 * \fn void VT_SetTerminal(int ID)
402 * \brief Set the current terminal
404 void VT_SetTerminal(int ID)
406 tVideo_IOCtl_Mode mode = {0};
409 // Create the video mode
410 mode.width = gVT_Terminals[ ID ].Width;
411 mode.height = gVT_Terminals[ ID ].Height;
413 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
415 mode.flags = VIDEO_FLAG_TEXT;
417 // - Framebuffer or 3D
424 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
426 gVT_Terminals[ ID ].RealWidth = mode.width;
427 gVT_Terminals[ ID ].RealHeight = mode.height;
428 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETMODE, &modeNum );
430 // Update current terminal ID
431 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
432 giVT_CurrentTerminal = ID;
435 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
439 * \fn void VT_KBCallBack(Uint32 Codepoint)
440 * \brief Called on keyboard interrupt
442 void VT_KBCallBack(Uint32 Codepoint)
444 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
446 // How the hell did we get a Codepoint of zero?
447 if(Codepoint == 0) return;
450 if( Codepoint & 0x80000000 )
452 Codepoint &= 0x7FFFFFFF;
479 if(!gbVT_AltDown || !gbVT_CtrlDown)
483 case KEY_F1: VT_SetTerminal(0); return;
484 case KEY_F2: VT_SetTerminal(1); return;
485 case KEY_F3: VT_SetTerminal(2); return;
486 case KEY_F4: VT_SetTerminal(3); return;
487 case KEY_F5: VT_SetTerminal(4); return;
488 case KEY_F6: VT_SetTerminal(5); return;
489 case KEY_F7: VT_SetTerminal(6); return;
490 case KEY_F8: VT_SetTerminal(7); return;
491 case KEY_F9: VT_SetTerminal(8); return;
492 case KEY_F10: VT_SetTerminal(9); return;
493 case KEY_F11: VT_SetTerminal(10); return;
494 case KEY_F12: VT_SetTerminal(11); return;
503 if(term->Mode == TERM_MODE_TEXT)
508 // Ignore Modifer Keys
509 if(Codepoint > KEY_MODIFIERS) return;
511 // Get UTF-8/ANSI Encoding
515 buf[0] = '\x1B'; buf[1] = '[';
516 buf[2] = 'D'; len = 3;
519 buf[0] = '\x1B'; buf[1] = '[';
520 buf[2] = 'C'; len = 3;
523 len = WriteUTF8( buf, Codepoint );
524 //Log("Codepoint = 0x%x", Codepoint);
528 //Log("len = %i, buf = %s", len, buf);
531 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
532 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
534 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
535 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
537 // Roll the buffer over
538 term->InputWrite += len;
539 term->InputWrite %= MAX_INPUT_CHARS8;
540 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
541 term->InputRead = term->InputWrite + 1;
542 term->InputRead %= MAX_INPUT_CHARS8;
548 // Encode the raw UTF-32 Key
549 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
551 term->InputWrite %= MAX_INPUT_CHARS32;
552 if(term->InputRead == term->InputWrite) {
554 term->InputRead %= MAX_INPUT_CHARS32;
560 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
561 * \brief Print a string to the Virtual Terminal
563 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
567 for( i = 0; i < Count; i++ )
569 if( Buffer[i] == 0x1B ) // Escape Sequence
572 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
576 if( Buffer[i] < 128 ) // Plain ASCII
577 VT_int_PutChar(Term, Buffer[i]);
579 i += ReadUTF8(&Buffer[i], &val);
580 VT_int_PutChar(Term, val);
585 if( !(Term->Flags & VT_FLAG_HIDECSR) )
587 tVideo_IOCtl_Pos pos;
588 pos.x = Term->WritePos % Term->Width;
589 pos.y = Term->WritePos / Term->Width;
590 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
595 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
596 * \brief Clears a line in a virtual terminal
598 void VT_int_ClearLine(tVTerm *Term, int Num)
601 //ENTER("pTerm iNum", Term, Num);
602 for( i = Term->Width; i--; )
604 Term->Text[ Num*Term->Width + i ].Ch = 0;
605 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
611 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
612 * \brief Parses a VT100 Escape code
614 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
619 int args[4] = {0,0,0,0};
627 while('0' <= c && c <= '9') {
632 if( j != 1 ) argc ++;
635 // Get string (what does this do?)
643 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
649 if(argc == 1) tmp = args[0];
652 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
653 Term->WritePos -= Term->WritePos % Term->Width;
655 Term->WritePos -= tmp;
660 if(argc == 1) tmp = args[0];
662 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
663 Term->WritePos -= Term->WritePos % Term->Width;
664 Term->WritePos += Term->Width - 1;
666 Term->WritePos += tmp;
676 int i = Term->Height * VT_SCROLLBACK;
677 while( i-- ) VT_int_ClearLine(Term, i);
680 VT_int_UpdateScreen(Term, 1);
690 if( 0 <= args[argc] && args[argc] <= 8)
694 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
695 case 1: Term->CurColour |= 0x80000000; break; // Bright
696 case 2: Term->CurColour &= ~0x80000000; break; // Dim
700 else if(30 <= args[argc] && args[argc] <= 37) {
701 Term->CurColour &= 0xF000FFFF;
702 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
705 else if(40 <= args[argc] && args[argc] <= 47) {
706 Term->CurColour &= 0xFFFF8000;
707 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
723 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
724 * \brief Write a single character to a VTerm
726 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
729 //ENTER("pTerm xCh", Term, Ch);
730 //LOG("Term = {WritePos:%i, ViewPos:%i}\n", Term->WritePos, Term->ViewPos);
734 case '\0': return; // Ignore NULL byte
736 Term->WritePos += Term->Width;
738 Term->WritePos -= Term->WritePos % Term->Width;
743 Term->Text[ Term->WritePos ].Ch = '\0';
744 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
746 } while(Term->WritePos & 7);
750 // Backspace is invalid at Offset 0
751 if(Term->WritePos == 0) break;
755 if(Term->Text[ Term->WritePos ].Ch != '\0') {
756 Term->Text[ Term->WritePos ].Ch = 0;
757 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
761 i = 7; // Limit it to 8
763 Term->Text[ Term->WritePos ].Ch = 0;
764 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
766 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
767 if(Term->Text[ Term->WritePos ].Ch != '\0')
772 Term->Text[ Term->WritePos ].Ch = Ch;
773 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
780 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
783 Term->WritePos -= Term->Width;
785 // Update view position
786 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
787 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
788 if(Term->ViewPos > base) Term->ViewPos = base;
790 // Scroll terminal cache
791 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
796 &Term->Text[Term->Width],
797 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
801 for( i = 0; i < Term->Width; i ++ )
803 Term->Text[ base + i ].Ch = 0;
804 Term->Text[ base + i ].Colour = Term->CurColour;
807 VT_int_UpdateScreen( Term, 1 );
809 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
811 Term->ViewPos += Term->Width;
812 VT_int_UpdateScreen( Term, 1 );
815 VT_int_UpdateScreen( Term, 0 );
821 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
822 * \brief Updates the video framebuffer
824 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
826 // Only update if this is the current terminal
827 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
829 if( Term->Mode == TERM_MODE_TEXT )
833 giVT_OutputDevHandle,
835 Term->Width*Term->Height*sizeof(tVT_Char),
836 &Term->Text[Term->ViewPos]
839 int pos = Term->WritePos - Term->WritePos % Term->Width;
841 giVT_OutputDevHandle,
842 (pos - Term->ViewPos)*sizeof(tVT_Char),
843 Term->Width*sizeof(tVT_Char),
851 giVT_OutputDevHandle,
853 Term->Width*Term->Height*sizeof(Uint32),
860 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
861 * \brief Change the mode of a VTerm
863 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
869 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
873 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
875 case TERM_MODE_OPENGL:
879 Term->Mode = NewMode;
885 #define MONOSPACE_FONT 10816
887 #if MONOSPACE_FONT == 10808 // 8x8
888 # include "vterm_font_8x8.h"
889 #elif MONOSPACE_FONT == 10816 // 8x16
890 # include "vterm_font_8x16.h"
893 // === PROTOTYPES ===
894 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
897 int giVT_CharWidth = FONT_WIDTH+1;
898 int giVT_CharHeight = FONT_HEIGHT;
902 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
903 * \brief Render a font character
905 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
908 Uint32 *buf = Buffer;
911 font = VT_Font_GetChar(Codepoint);
913 for(y = 0; y < FONT_HEIGHT; y ++)
915 for(x = 0; x < FONT_WIDTH; x ++)
917 if(*font & (1 << (FONT_WIDTH-x-1)))
928 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
931 Uint32 VT_Colour12to24(Uint16 Col12)
936 ret = (tmp << 0) | (tmp << 4);
937 tmp = (Col12 & 0xF0) >> 4;
938 ret |= (tmp << 8) | (tmp << 12);
939 tmp = (Col12 & 0xF00) >> 8;
940 ret |= (tmp << 16) | (tmp << 20);
945 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
946 * \brief Gets an index into the font array given a Unicode Codepoint
947 * \note See http://en.wikipedia.org/wiki/CP437
949 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
953 return &VTermFont[Codepoint*FONT_HEIGHT];
956 case 0xC7: index = 128; break; // Ç
957 case 0xFC: index = 129; break; // ü
958 case 0xE9: index = 130; break; // é
959 case 0xE2: index = 131; break; // â
960 case 0xE4: index = 132; break; // ä
961 case 0xE0: index = 133; break; // à
962 case 0xE5: index = 134; break; // å
963 case 0xE7: index = 135; break; // ç
964 case 0xEA: index = 136; break; // ê
965 case 0xEB: index = 137; break; // ë
966 case 0xE8: index = 138; break; // è
967 case 0xEF: index = 139; break; // ï
968 case 0xEE: index = 140; break; // î
969 case 0xEC: index = 141; break; // ì
970 case 0xC4: index = 142; break; // Ä
971 case 0xC5: index = 143; break; // Å
974 return &VTermFont[index*FONT_HEIGHT];
977 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
978 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
979 EXPORT(VT_Font_Render);
980 EXPORT(VT_Colour12to24);