2 * Acess2 Virtual Terminal Driver
8 #include <tpl_drv_video.h>
9 #include <tpl_drv_keyboard.h>
10 #include <tpl_drv_terminal.h>
14 #define VERSION ((0<<8)|(50))
17 #define MAX_INPUT_CHARS32 64
18 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
19 #define VT_SCROLLBACK 1 // 2 Screens of text
20 #define DEFAULT_OUTPUT "VGA"
21 //#define DEFAULT_OUTPUT "BochsGA"
22 #define DEFAULT_INPUT "PS2Keyboard"
23 #define DEFAULT_WIDTH 80
24 #define DEFAULT_HEIGHT 25
25 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
27 #define VT_FLAG_HIDECSR 0x01
28 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
31 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
32 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
38 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
39 int Flags; //!< Flags (see VT_FLAG_*)
40 short Width; //!< Virtual Width
41 short Height; //!< Virtual Height
42 short RealWidth; //!< Real Width
43 short RealHeight; //!< Real Height
45 int ViewPos; //!< View Buffer Offset (Text Only)
46 int WritePos; //!< Write Buffer Offset (Text Only)
47 Uint32 CurColour; //!< Current Text Colour
48 char Name[2]; //!< Name of the terminal
50 int InputRead; //!< Input buffer read position
51 int InputWrite; //!< Input buffer write position
52 char InputBuffer[MAX_INPUT_CHARS8];
61 extern void Debug_SetKTerminal(char *File);
64 int VT_Install(char **Arguments);
65 char *VT_ReadDir(tVFS_Node *Node, int Pos);
66 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
67 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
68 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
69 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
70 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
71 void VT_SetTerminal(int ID);
72 void VT_KBCallBack(Uint32 Codepoint);
73 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
74 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
75 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
76 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
77 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
80 const Uint16 caVT100Colours[] = {
81 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
82 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
86 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
87 tDevFS_Driver gVT_DrvInfo = {
90 .Flags = VFS_FFLAG_DIRECTORY,
94 .ReadDir = VT_ReadDir,
95 .FindDir = VT_FindDir,
96 .IOCtl = VT_Root_IOCtl
100 tVTerm gVT_Terminals[NUM_VTS];
101 int giVT_CurrentTerminal = 0;
102 // --- Driver Handles ---
103 char *gsVT_OutputDevice = NULL;
104 char *gsVT_InputDevice = NULL;
105 int giVT_OutputDevHandle = -2;
106 int giVT_InputDevHandle = -2;
107 // --- Key States --- (Used for VT Switching/Magic Combos)
108 int gbVT_CtrlDown = 0;
109 int gbVT_AltDown = 0;
110 int gbVT_SysrqDown = 0;
114 * \fn int VT_Install(char **Arguments)
115 * \brief Installs the Virtual Terminal Driver
117 int VT_Install(char **Arguments)
119 char **args = Arguments;
126 for( ; (arg = *args); args++ )
128 if(arg[0] != '-') continue;
134 if(args[1] == NULL) break;
135 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
136 gsVT_OutputDevice = malloc(strlen(args[1])+1);
137 strcpy(gsVT_OutputDevice, args[1]);
143 if(args[1] == NULL) break;
144 if(gsVT_InputDevice) free(gsVT_InputDevice);
145 gsVT_InputDevice = malloc(strlen(args[1])+1);
146 strcpy(gsVT_InputDevice, args[1]);
155 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
156 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
158 LOG("Using '%s' as output", gsVT_OutputDevice);
159 LOG("Using '%s' as input", gsVT_InputDevice);
162 for( i = 0; i < NUM_VTS; i++ )
164 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
165 gVT_Terminals[i].Flags = 0;
166 gVT_Terminals[i].Width = DEFAULT_WIDTH;
167 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
168 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
169 gVT_Terminals[i].WritePos = 0;
170 gVT_Terminals[i].ViewPos = 0;
172 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
174 gVT_Terminals[i].Name[0] = '0'+i;
175 gVT_Terminals[i].Name[1] = '\0';
176 gVT_Terminals[i].Node.Inode = i;
177 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
178 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
180 gVT_Terminals[i].Node.Read = VT_Read;
181 gVT_Terminals[i].Node.Write = VT_Write;
182 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
186 DevFS_AddDevice( &gVT_DrvInfo );
188 // Set kernel output to VT0
189 Debug_SetKTerminal("/Devices/VTerm/0");
191 return MODULE_INIT_SUCCESS;
195 * \fn void VT_InitOutput()
196 * \brief Initialise Video Output
200 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
205 * \fn void VT_InitInput()
206 * \brief Initialises the input
210 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
211 if(giVT_InputDevHandle == -1) return ;
212 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
216 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
217 * \brief Read from the VTerm Directory
219 char *VT_ReadDir(tVFS_Node *Node, int Pos)
221 if(Pos < 0) return NULL;
222 if(Pos >= NUM_VTS) return NULL;
223 return strdup( gVT_Terminals[Pos].Name );
227 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
228 * \brief Find an item in the VTerm directory
230 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
234 //ENTER("pNode sName", Node, Name);
236 // Open the input and output files if needed
237 if(giVT_OutputDevHandle == -2) VT_InitOutput();
238 if(giVT_InputDevHandle == -2) VT_InitInput();
241 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
252 //LEAVE('p', &gVT_Terminals[num].Node);
253 return &gVT_Terminals[num].Node;
257 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
258 * \brief Control the VTerm Driver
260 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
265 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
266 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
267 case DRV_IOCTL_VERSION: return VERSION;
268 case DRV_IOCTL_LOOKUP: return 0;
270 case 4: // Get Video Driver
271 if(Data) strcpy(Data, gsVT_OutputDevice);
272 return strlen(gsVT_OutputDevice);
274 case 5: // Set Video Driver
275 if(!Data) return -EINVAL;
276 if(Threads_GetUID() != 0) return -EACCES;
280 free(gsVT_OutputDevice);
282 gsVT_OutputDevice = malloc(len+1);
283 strcpy(gsVT_OutputDevice, Data);
285 VFS_Close(giVT_OutputDevHandle);
286 giVT_OutputDevHandle = -1;
295 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
296 * \brief Read from a virtual terminal
298 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
301 tVTerm *term = &gVT_Terminals[ Node->Inode ];
303 // Check current mode
309 while(term->InputRead == term->InputWrite) Threads_Yield();
311 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
314 term->InputRead %= MAX_INPUT_CHARS8;
319 case TERM_MODE_OPENGL:
322 while(term->InputRead == term->InputWrite) Threads_Yield();
323 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
326 term->InputRead %= MAX_INPUT_CHARS32;
334 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
335 * \brief Write to a virtual terminal
337 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
339 tVTerm *term = &gVT_Terminals[ Node->Inode ];
341 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
347 VT_int_PutString(term, Buffer, Length);
356 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
357 * \brief Call an IO Control on a virtual terminal
359 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
362 tVTerm *term = Node->ImplPtr;
363 ENTER("pNode iId pData", Node, Id, Data);
368 LEAVE('i', DRV_TYPE_TERMINAL);
369 return DRV_TYPE_TERMINAL;
370 case DRV_IOCTL_IDENT:
371 memcpy(Data, "VT\0\0", 4);
374 case DRV_IOCTL_VERSION:
377 case DRV_IOCTL_LOOKUP:
381 // Get/Set the mode (and apply any changes)
382 case TERM_IOCTL_MODETYPE:
385 if(term->Mode != *iData)
386 VT_int_ChangeMode(term, *iData);
388 // Update the screen dimensions
389 if(giVT_CurrentTerminal == Node->Inode)
390 VT_SetTerminal( giVT_CurrentTerminal );
392 LEAVE('i', term->Mode);
395 // Get/set the terminal width
396 case TERM_IOCTL_WIDTH:
397 if(Data != NULL) term->Width = *iData;
398 Log("VT_Terminal_IOCtl - RETURN term->Width = %i", term->Width);
399 LEAVE('i', term->Width);
402 // Get/set the terminal height
403 case TERM_IOCTL_HEIGHT:
404 if(Data != NULL) term->Height = *iData;
405 Log("VT_Terminal_IOCtl - RETURN term->Height = %i", term->Height);
406 LEAVE('i', term->Height);
414 * \fn void VT_SetTerminal(int ID)
415 * \brief Set the current terminal
417 void VT_SetTerminal(int ID)
419 tVideo_IOCtl_Mode mode = {0};
422 // Create the video mode
423 mode.width = gVT_Terminals[ ID ].Width;
424 mode.height = gVT_Terminals[ ID ].Height;
426 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
428 mode.flags = VIDEO_FLAG_TEXT;
430 // - Framebuffer or 3D
437 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
439 gVT_Terminals[ ID ].RealWidth = mode.width;
440 gVT_Terminals[ ID ].RealHeight = mode.height;
441 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &modeNum );
443 // Update current terminal ID
444 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
445 giVT_CurrentTerminal = ID;
448 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
452 * \fn void VT_KBCallBack(Uint32 Codepoint)
453 * \brief Called on keyboard interrupt
455 void VT_KBCallBack(Uint32 Codepoint)
457 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
459 // How the hell did we get a Codepoint of zero?
460 if(Codepoint == 0) return;
463 if( Codepoint & 0x80000000 )
465 Codepoint &= 0x7FFFFFFF;
492 if(!gbVT_AltDown || !gbVT_CtrlDown)
496 case KEY_F1: VT_SetTerminal(0); return;
497 case KEY_F2: VT_SetTerminal(1); return;
498 case KEY_F3: VT_SetTerminal(2); return;
499 case KEY_F4: VT_SetTerminal(3); return;
500 case KEY_F5: VT_SetTerminal(4); return;
501 case KEY_F6: VT_SetTerminal(5); return;
502 case KEY_F7: VT_SetTerminal(6); return;
503 case KEY_F8: VT_SetTerminal(7); return;
504 case KEY_F9: VT_SetTerminal(8); return;
505 case KEY_F10: VT_SetTerminal(9); return;
506 case KEY_F11: VT_SetTerminal(10); return;
507 case KEY_F12: VT_SetTerminal(11); return;
516 if(term->Mode == TERM_MODE_TEXT)
521 // Ignore Modifer Keys
522 if(Codepoint > KEY_MODIFIERS) return;
524 // Get UTF-8/ANSI Encoding
528 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
532 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
536 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
540 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
545 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
546 //len = 4; // Commented out until I'm sure
552 // Attempt to encode in UTF-8
554 len = WriteUTF8( buf, Codepoint );
556 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
562 // Unprintable / Don't Pass
567 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
568 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
570 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
571 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
573 // Roll the buffer over
574 term->InputWrite += len;
575 term->InputWrite %= MAX_INPUT_CHARS8;
576 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
577 term->InputRead = term->InputWrite + 1;
578 term->InputRead %= MAX_INPUT_CHARS8;
584 // Encode the raw UTF-32 Key
585 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
587 term->InputWrite %= MAX_INPUT_CHARS32;
588 if(term->InputRead == term->InputWrite) {
590 term->InputRead %= MAX_INPUT_CHARS32;
596 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
597 * \brief Print a string to the Virtual Terminal
599 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
603 for( i = 0; i < Count; i++ )
605 if( Buffer[i] == 0x1B ) // Escape Sequence
608 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
612 if( Buffer[i] < 128 ) // Plain ASCII
613 VT_int_PutChar(Term, Buffer[i]);
615 i += ReadUTF8(&Buffer[i], &val);
616 VT_int_PutChar(Term, val);
621 if( !(Term->Flags & VT_FLAG_HIDECSR) )
623 tVideo_IOCtl_Pos pos;
624 pos.x = Term->WritePos % Term->Width;
625 pos.y = Term->WritePos / Term->Width;
626 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
631 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
632 * \brief Clears a line in a virtual terminal
634 void VT_int_ClearLine(tVTerm *Term, int Num)
637 //ENTER("pTerm iNum", Term, Num);
638 for( i = Term->Width; i--; )
640 Term->Text[ Num*Term->Width + i ].Ch = 0;
641 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
647 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
648 * \brief Parses a VT100 Escape code
650 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
655 int args[4] = {0,0,0,0};
663 while('0' <= c && c <= '9') {
668 if( j != 1 ) argc ++;
671 // Get string (what does this do?)
679 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
685 if(argc == 1) tmp = args[0];
688 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
689 Term->WritePos -= Term->WritePos % Term->Width;
691 Term->WritePos -= tmp;
696 if(argc == 1) tmp = args[0];
698 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
699 Term->WritePos -= Term->WritePos % Term->Width;
700 Term->WritePos += Term->Width - 1;
702 Term->WritePos += tmp;
712 int i = Term->Height * VT_SCROLLBACK;
713 while( i-- ) VT_int_ClearLine(Term, i);
716 VT_int_UpdateScreen(Term, 1);
726 if( 0 <= args[argc] && args[argc] <= 8)
730 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
731 case 1: Term->CurColour |= 0x80000000; break; // Bright
732 case 2: Term->CurColour &= ~0x80000000; break; // Dim
736 else if(30 <= args[argc] && args[argc] <= 37) {
737 Term->CurColour &= 0xF000FFFF;
738 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
741 else if(40 <= args[argc] && args[argc] <= 47) {
742 Term->CurColour &= 0xFFFF8000;
743 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
759 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
760 * \brief Write a single character to a VTerm
762 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
765 //ENTER("pTerm xCh", Term, Ch);
766 //LOG("Term = {WritePos:%i, ViewPos:%i}", Term->WritePos, Term->ViewPos);
770 case '\0': return; // Ignore NULL byte
772 Term->WritePos += Term->Width;
774 Term->WritePos -= Term->WritePos % Term->Width;
779 Term->Text[ Term->WritePos ].Ch = '\0';
780 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
782 } while(Term->WritePos & 7);
786 // Backspace is invalid at Offset 0
787 if(Term->WritePos == 0) break;
791 if(Term->Text[ Term->WritePos ].Ch != '\0') {
792 Term->Text[ Term->WritePos ].Ch = 0;
793 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
797 i = 7; // Limit it to 8
799 Term->Text[ Term->WritePos ].Ch = 0;
800 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
802 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
803 if(Term->Text[ Term->WritePos ].Ch != '\0')
808 Term->Text[ Term->WritePos ].Ch = Ch;
809 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
816 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
819 Term->WritePos -= Term->Width;
821 // Update view position
822 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
823 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
824 if(Term->ViewPos > base) Term->ViewPos = base;
826 // Scroll terminal cache
827 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
832 &Term->Text[Term->Width],
833 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
837 for( i = 0; i < Term->Width; i ++ )
839 Term->Text[ base + i ].Ch = 0;
840 Term->Text[ base + i ].Colour = Term->CurColour;
843 VT_int_UpdateScreen( Term, 1 );
845 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
847 Term->ViewPos += Term->Width;
848 VT_int_UpdateScreen( Term, 1 );
851 VT_int_UpdateScreen( Term, 0 );
857 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
858 * \brief Updates the video framebuffer
860 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
862 // Only update if this is the current terminal
863 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
865 if( Term->Mode == TERM_MODE_TEXT )
869 giVT_OutputDevHandle,
871 Term->Width*Term->Height*sizeof(tVT_Char),
872 &Term->Text[Term->ViewPos]
875 int pos = Term->WritePos - Term->WritePos % Term->Width;
877 giVT_OutputDevHandle,
878 (pos - Term->ViewPos)*sizeof(tVT_Char),
879 Term->Width*sizeof(tVT_Char),
887 giVT_OutputDevHandle,
889 Term->Width*Term->Height*sizeof(Uint32),
896 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
897 * \brief Change the mode of a VTerm
899 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
905 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
909 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
911 case TERM_MODE_OPENGL:
915 Term->Mode = NewMode;
921 #define MONOSPACE_FONT 10816
923 #if MONOSPACE_FONT == 10808 // 8x8
924 # include "vterm_font_8x8.h"
925 #elif MONOSPACE_FONT == 10816 // 8x16
926 # include "vterm_font_8x16.h"
929 // === PROTOTYPES ===
930 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
933 int giVT_CharWidth = FONT_WIDTH+1;
934 int giVT_CharHeight = FONT_HEIGHT;
938 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
939 * \brief Render a font character
941 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
944 Uint32 *buf = Buffer;
947 font = VT_Font_GetChar(Codepoint);
949 for(y = 0; y < FONT_HEIGHT; y ++)
951 for(x = 0; x < FONT_WIDTH; x ++)
953 if(*font & (1 << (FONT_WIDTH-x-1)))
964 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
967 Uint32 VT_Colour12to24(Uint16 Col12)
972 ret = (tmp << 0) | (tmp << 4);
973 tmp = (Col12 & 0xF0) >> 4;
974 ret |= (tmp << 8) | (tmp << 12);
975 tmp = (Col12 & 0xF00) >> 8;
976 ret |= (tmp << 16) | (tmp << 20);
981 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
982 * \brief Gets an index into the font array given a Unicode Codepoint
983 * \note See http://en.wikipedia.org/wiki/CP437
985 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
989 return &VTermFont[Codepoint*FONT_HEIGHT];
992 case 0xC7: index = 128; break; // Ç
993 case 0xFC: index = 129; break; // ü
994 case 0xE9: index = 130; break; // é
995 case 0xE2: index = 131; break; // â
996 case 0xE4: index = 132; break; // ä
997 case 0xE0: index = 133; break; // à
998 case 0xE5: index = 134; break; // å
999 case 0xE7: index = 135; break; // ç
1000 case 0xEA: index = 136; break; // ê
1001 case 0xEB: index = 137; break; // ë
1002 case 0xE8: index = 138; break; // è
1003 case 0xEF: index = 139; break; // ï
1004 case 0xEE: index = 140; break; // î
1005 case 0xEC: index = 141; break; // ì
1006 case 0xC4: index = 142; break; // Ä
1007 case 0xC5: index = 143; break; // Å
1010 return &VTermFont[index*FONT_HEIGHT];
1013 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1014 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1015 EXPORT(VT_Font_Render);
1016 EXPORT(VT_Colour12to24);