2 * Acess2 Virtual Terminal Driver
8 #include <tpl_drv_video.h>
9 #include <tpl_drv_keyboard.h>
10 #include <tpl_drv_terminal.h>
13 #define USE_CTRL_ALT 0
16 #define VERSION ((0<<8)|(50))
19 #define MAX_INPUT_CHARS32 64
20 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
21 #define VT_SCROLLBACK 1 // 2 Screens of text
22 #define DEFAULT_OUTPUT "VGA"
23 //#define DEFAULT_OUTPUT "BochsGA"
24 #define DEFAULT_INPUT "PS2Keyboard"
25 #define DEFAULT_WIDTH 80
26 #define DEFAULT_HEIGHT 25
27 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
29 #define VT_FLAG_HIDECSR 0x01
30 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
33 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
34 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
40 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
41 int Flags; //!< Flags (see VT_FLAG_*)
42 short Width; //!< Virtual Width
43 short Height; //!< Virtual Height
44 short RealWidth; //!< Real Width
45 short RealHeight; //!< Real Height
47 int ViewPos; //!< View Buffer Offset (Text Only)
48 int WritePos; //!< Write Buffer Offset (Text Only)
49 Uint32 CurColour; //!< Current Text Colour
50 char Name[2]; //!< Name of the terminal
52 int InputRead; //!< Input buffer read position
53 int InputWrite; //!< Input buffer write position
54 char InputBuffer[MAX_INPUT_CHARS8];
63 extern void Debug_SetKTerminal(char *File);
66 int VT_Install(char **Arguments);
67 char *VT_ReadDir(tVFS_Node *Node, int Pos);
68 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
69 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
70 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
71 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
72 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
73 void VT_SetTerminal(int ID);
74 void VT_KBCallBack(Uint32 Codepoint);
75 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
76 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
77 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
78 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
79 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
82 const Uint16 caVT100Colours[] = {
83 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
84 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
88 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
89 tDevFS_Driver gVT_DrvInfo = {
92 .Flags = VFS_FFLAG_DIRECTORY,
96 .ReadDir = VT_ReadDir,
97 .FindDir = VT_FindDir,
98 .IOCtl = VT_Root_IOCtl
102 tVTerm gVT_Terminals[NUM_VTS];
103 int giVT_CurrentTerminal = 0;
104 // --- Driver Handles ---
105 char *gsVT_OutputDevice = NULL;
106 char *gsVT_InputDevice = NULL;
107 int giVT_OutputDevHandle = -2;
108 int giVT_InputDevHandle = -2;
109 // --- Key States --- (Used for VT Switching/Magic Combos)
110 int gbVT_CtrlDown = 0;
111 int gbVT_AltDown = 0;
112 int gbVT_SysrqDown = 0;
116 * \fn int VT_Install(char **Arguments)
117 * \brief Installs the Virtual Terminal Driver
119 int VT_Install(char **Arguments)
121 char **args = Arguments;
128 for( ; (arg = *args); args++ )
130 if(arg[0] != '-') continue;
136 if(args[1] == NULL) break;
137 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
138 gsVT_OutputDevice = malloc(strlen(args[1])+1);
139 strcpy(gsVT_OutputDevice, args[1]);
145 if(args[1] == NULL) break;
146 if(gsVT_InputDevice) free(gsVT_InputDevice);
147 gsVT_InputDevice = malloc(strlen(args[1])+1);
148 strcpy(gsVT_InputDevice, args[1]);
157 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
158 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
160 LOG("Using '%s' as output", gsVT_OutputDevice);
161 LOG("Using '%s' as input", gsVT_InputDevice);
164 for( i = 0; i < NUM_VTS; i++ )
166 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
167 gVT_Terminals[i].Flags = 0;
168 gVT_Terminals[i].Width = DEFAULT_WIDTH;
169 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
170 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
171 gVT_Terminals[i].WritePos = 0;
172 gVT_Terminals[i].ViewPos = 0;
174 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
176 gVT_Terminals[i].Name[0] = '0'+i;
177 gVT_Terminals[i].Name[1] = '\0';
178 gVT_Terminals[i].Node.Inode = i;
179 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
180 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
182 gVT_Terminals[i].Node.Read = VT_Read;
183 gVT_Terminals[i].Node.Write = VT_Write;
184 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
188 DevFS_AddDevice( &gVT_DrvInfo );
190 // Set kernel output to VT0
191 Debug_SetKTerminal("/Devices/VTerm/0");
193 return MODULE_INIT_SUCCESS;
197 * \fn void VT_InitOutput()
198 * \brief Initialise Video Output
202 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
207 * \fn void VT_InitInput()
208 * \brief Initialises the input
212 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
213 if(giVT_InputDevHandle == -1) return ;
214 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
218 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
219 * \brief Read from the VTerm Directory
221 char *VT_ReadDir(tVFS_Node *Node, int Pos)
223 if(Pos < 0) return NULL;
224 if(Pos >= NUM_VTS) return NULL;
225 return strdup( gVT_Terminals[Pos].Name );
229 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
230 * \brief Find an item in the VTerm directory
232 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
236 //ENTER("pNode sName", Node, Name);
238 // Open the input and output files if needed
239 if(giVT_OutputDevHandle == -2) VT_InitOutput();
240 if(giVT_InputDevHandle == -2) VT_InitInput();
243 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
254 //LEAVE('p', &gVT_Terminals[num].Node);
255 return &gVT_Terminals[num].Node;
259 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
260 * \brief Control the VTerm Driver
262 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
267 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
268 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
269 case DRV_IOCTL_VERSION: return VERSION;
270 case DRV_IOCTL_LOOKUP: return 0;
272 case 4: // Get Video Driver
273 if(Data) strcpy(Data, gsVT_OutputDevice);
274 return strlen(gsVT_OutputDevice);
276 case 5: // Set Video Driver
277 if(!Data) return -EINVAL;
278 if(Threads_GetUID() != 0) return -EACCES;
282 free(gsVT_OutputDevice);
284 gsVT_OutputDevice = malloc(len+1);
285 strcpy(gsVT_OutputDevice, Data);
287 VFS_Close(giVT_OutputDevHandle);
288 giVT_OutputDevHandle = -1;
297 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
298 * \brief Read from a virtual terminal
300 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
303 tVTerm *term = &gVT_Terminals[ Node->Inode ];
305 // Check current mode
311 while(term->InputRead == term->InputWrite) Threads_Yield();
313 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
316 term->InputRead %= MAX_INPUT_CHARS8;
321 case TERM_MODE_OPENGL:
324 while(term->InputRead == term->InputWrite) Threads_Yield();
325 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
328 term->InputRead %= MAX_INPUT_CHARS32;
336 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
337 * \brief Write to a virtual terminal
339 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
341 tVTerm *term = &gVT_Terminals[ Node->Inode ];
343 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
349 VT_int_PutString(term, Buffer, Length);
358 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
359 * \brief Call an IO Control on a virtual terminal
361 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
364 tVTerm *term = Node->ImplPtr;
365 ENTER("pNode iId pData", Node, Id, Data);
370 LEAVE('i', DRV_TYPE_TERMINAL);
371 return DRV_TYPE_TERMINAL;
372 case DRV_IOCTL_IDENT:
373 memcpy(Data, "VT\0\0", 4);
376 case DRV_IOCTL_VERSION:
379 case DRV_IOCTL_LOOKUP:
383 // Get/Set the mode (and apply any changes)
384 case TERM_IOCTL_MODETYPE:
387 if(term->Mode != *iData)
388 VT_int_ChangeMode(term, *iData);
390 // Update the screen dimensions
391 if(giVT_CurrentTerminal == Node->Inode)
392 VT_SetTerminal( giVT_CurrentTerminal );
394 LEAVE('i', term->Mode);
397 // Get/set the terminal width
398 case TERM_IOCTL_WIDTH:
399 if(Data != NULL) term->Width = *iData;
400 Log("VT_Terminal_IOCtl - RETURN term->Width = %i", term->Width);
401 LEAVE('i', term->Width);
404 // Get/set the terminal height
405 case TERM_IOCTL_HEIGHT:
406 if(Data != NULL) term->Height = *iData;
407 Log("VT_Terminal_IOCtl - RETURN term->Height = %i", term->Height);
408 LEAVE('i', term->Height);
416 * \fn void VT_SetTerminal(int ID)
417 * \brief Set the current terminal
419 void VT_SetTerminal(int ID)
421 tVideo_IOCtl_Mode mode = {0};
424 // Create the video mode
425 mode.width = gVT_Terminals[ ID ].Width;
426 mode.height = gVT_Terminals[ ID ].Height;
428 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
430 mode.flags = VIDEO_FLAG_TEXT;
432 // - Framebuffer or 3D
439 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
441 gVT_Terminals[ ID ].RealWidth = mode.width;
442 gVT_Terminals[ ID ].RealHeight = mode.height;
443 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &modeNum );
445 // Update current terminal ID
446 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
447 giVT_CurrentTerminal = ID;
450 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
454 * \fn void VT_KBCallBack(Uint32 Codepoint)
455 * \brief Called on keyboard interrupt
457 void VT_KBCallBack(Uint32 Codepoint)
459 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
461 // How the hell did we get a Codepoint of zero?
462 if(Codepoint == 0) return;
465 if( Codepoint & 0x80000000 )
467 Codepoint &= 0x7FFFFFFF;
471 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
472 case KEY_LSHIFT: gbVT_AltDown = 0; break;
490 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
491 case KEY_LSHIFT: gbVT_AltDown = 1; break;
505 if(!gbVT_AltDown || !gbVT_CtrlDown)
510 case KEY_F1: VT_SetTerminal(0); return;
511 case KEY_F2: VT_SetTerminal(1); return;
512 case KEY_F3: VT_SetTerminal(2); return;
513 case KEY_F4: VT_SetTerminal(3); return;
514 case KEY_F5: VT_SetTerminal(4); return;
515 case KEY_F6: VT_SetTerminal(5); return;
516 case KEY_F7: VT_SetTerminal(6); return;
517 case KEY_F8: VT_SetTerminal(7); return;
518 case KEY_F9: VT_SetTerminal(8); return;
519 case KEY_F10: VT_SetTerminal(9); return;
520 case KEY_F11: VT_SetTerminal(10); return;
521 case KEY_F12: VT_SetTerminal(11); return;
530 if(term->Mode == TERM_MODE_TEXT)
535 // Ignore Modifer Keys
536 if(Codepoint > KEY_MODIFIERS) return;
538 // Get UTF-8/ANSI Encoding
542 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
546 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
550 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
554 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
559 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
560 //len = 4; // Commented out until I'm sure
566 // Attempt to encode in UTF-8
568 len = WriteUTF8( buf, Codepoint );
570 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
576 // Unprintable / Don't Pass
581 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
582 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
584 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
585 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
587 // Roll the buffer over
588 term->InputWrite += len;
589 term->InputWrite %= MAX_INPUT_CHARS8;
590 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
591 term->InputRead = term->InputWrite + 1;
592 term->InputRead %= MAX_INPUT_CHARS8;
598 // Encode the raw UTF-32 Key
599 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
601 term->InputWrite %= MAX_INPUT_CHARS32;
602 if(term->InputRead == term->InputWrite) {
604 term->InputRead %= MAX_INPUT_CHARS32;
610 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
611 * \brief Print a string to the Virtual Terminal
613 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
617 for( i = 0; i < Count; i++ )
619 if( Buffer[i] == 0x1B ) // Escape Sequence
622 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
626 if( Buffer[i] < 128 ) // Plain ASCII
627 VT_int_PutChar(Term, Buffer[i]);
629 i += ReadUTF8(&Buffer[i], &val);
630 VT_int_PutChar(Term, val);
635 if( !(Term->Flags & VT_FLAG_HIDECSR) )
637 tVideo_IOCtl_Pos pos;
638 pos.x = Term->WritePos % Term->Width;
639 pos.y = Term->WritePos / Term->Width;
640 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
645 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
646 * \brief Clears a line in a virtual terminal
648 void VT_int_ClearLine(tVTerm *Term, int Num)
651 //ENTER("pTerm iNum", Term, Num);
652 for( i = Term->Width; i--; )
654 Term->Text[ Num*Term->Width + i ].Ch = 0;
655 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
661 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
662 * \brief Parses a VT100 Escape code
664 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
669 int args[4] = {0,0,0,0};
677 while('0' <= c && c <= '9') {
682 if( j != 1 ) argc ++;
685 // Get string (what does this do?)
693 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
699 if(argc == 1) tmp = args[0];
702 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
703 Term->WritePos -= Term->WritePos % Term->Width;
705 Term->WritePos -= tmp;
710 if(argc == 1) tmp = args[0];
712 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
713 Term->WritePos -= Term->WritePos % Term->Width;
714 Term->WritePos += Term->Width - 1;
716 Term->WritePos += tmp;
726 int i = Term->Height * VT_SCROLLBACK;
727 while( i-- ) VT_int_ClearLine(Term, i);
730 VT_int_UpdateScreen(Term, 1);
740 if( 0 <= args[argc] && args[argc] <= 8)
744 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
745 case 1: Term->CurColour |= 0x80000000; break; // Bright
746 case 2: Term->CurColour &= ~0x80000000; break; // Dim
750 else if(30 <= args[argc] && args[argc] <= 37) {
751 Term->CurColour &= 0xF000FFFF;
752 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
755 else if(40 <= args[argc] && args[argc] <= 47) {
756 Term->CurColour &= 0xFFFF8000;
757 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
773 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
774 * \brief Write a single character to a VTerm
776 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
779 //ENTER("pTerm xCh", Term, Ch);
780 //LOG("Term = {WritePos:%i, ViewPos:%i}", Term->WritePos, Term->ViewPos);
784 case '\0': return; // Ignore NULL byte
786 Term->WritePos += Term->Width;
788 Term->WritePos -= Term->WritePos % Term->Width;
793 Term->Text[ Term->WritePos ].Ch = '\0';
794 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
796 } while(Term->WritePos & 7);
800 // Backspace is invalid at Offset 0
801 if(Term->WritePos == 0) break;
805 if(Term->Text[ Term->WritePos ].Ch != '\0') {
806 Term->Text[ Term->WritePos ].Ch = 0;
807 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
811 i = 7; // Limit it to 8
813 Term->Text[ Term->WritePos ].Ch = 0;
814 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
816 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
817 if(Term->Text[ Term->WritePos ].Ch != '\0')
822 Term->Text[ Term->WritePos ].Ch = Ch;
823 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
830 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
833 Term->WritePos -= Term->Width;
835 // Update view position
836 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
837 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
838 if(Term->ViewPos > base) Term->ViewPos = base;
840 // Scroll terminal cache
841 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
846 &Term->Text[Term->Width],
847 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
851 for( i = 0; i < Term->Width; i ++ )
853 Term->Text[ base + i ].Ch = 0;
854 Term->Text[ base + i ].Colour = Term->CurColour;
857 VT_int_UpdateScreen( Term, 1 );
859 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
861 Term->ViewPos += Term->Width;
862 VT_int_UpdateScreen( Term, 1 );
865 VT_int_UpdateScreen( Term, 0 );
871 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
872 * \brief Updates the video framebuffer
874 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
876 // Only update if this is the current terminal
877 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
879 if( Term->Mode == TERM_MODE_TEXT )
883 giVT_OutputDevHandle,
885 Term->Width*Term->Height*sizeof(tVT_Char),
886 &Term->Text[Term->ViewPos]
889 int pos = Term->WritePos - Term->WritePos % Term->Width;
891 giVT_OutputDevHandle,
892 (pos - Term->ViewPos)*sizeof(tVT_Char),
893 Term->Width*sizeof(tVT_Char),
901 giVT_OutputDevHandle,
903 Term->Width*Term->Height*sizeof(Uint32),
910 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
911 * \brief Change the mode of a VTerm
913 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
919 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
923 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
925 case TERM_MODE_OPENGL:
929 Term->Mode = NewMode;
935 #define MONOSPACE_FONT 10816
937 #if MONOSPACE_FONT == 10808 // 8x8
938 # include "vterm_font_8x8.h"
939 #elif MONOSPACE_FONT == 10816 // 8x16
940 # include "vterm_font_8x16.h"
943 // === PROTOTYPES ===
944 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
947 int giVT_CharWidth = FONT_WIDTH+1;
948 int giVT_CharHeight = FONT_HEIGHT;
952 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
953 * \brief Render a font character
955 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
958 Uint32 *buf = Buffer;
961 font = VT_Font_GetChar(Codepoint);
963 for(y = 0; y < FONT_HEIGHT; y ++)
965 for(x = 0; x < FONT_WIDTH; x ++)
967 if(*font & (1 << (FONT_WIDTH-x-1)))
978 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
981 Uint32 VT_Colour12to24(Uint16 Col12)
986 ret = (tmp << 0) | (tmp << 4);
987 tmp = (Col12 & 0xF0) >> 4;
988 ret |= (tmp << 8) | (tmp << 12);
989 tmp = (Col12 & 0xF00) >> 8;
990 ret |= (tmp << 16) | (tmp << 20);
995 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
996 * \brief Gets an index into the font array given a Unicode Codepoint
997 * \note See http://en.wikipedia.org/wiki/CP437
999 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1003 return &VTermFont[Codepoint*FONT_HEIGHT];
1006 case 0xC7: index = 128; break; // Ç
1007 case 0xFC: index = 129; break; // ü
1008 case 0xE9: index = 130; break; // é
1009 case 0xE2: index = 131; break; // â
1010 case 0xE4: index = 132; break; // ä
1011 case 0xE0: index = 133; break; // à
1012 case 0xE5: index = 134; break; // å
1013 case 0xE7: index = 135; break; // ç
1014 case 0xEA: index = 136; break; // ê
1015 case 0xEB: index = 137; break; // ë
1016 case 0xE8: index = 138; break; // è
1017 case 0xEF: index = 139; break; // ï
1018 case 0xEE: index = 140; break; // î
1019 case 0xEC: index = 141; break; // ì
1020 case 0xC4: index = 142; break; // Ä
1021 case 0xC5: index = 143; break; // Å
1024 return &VTermFont[index*FONT_HEIGHT];
1027 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1028 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1029 EXPORT(VT_Font_Render);
1030 EXPORT(VT_Colour12to24);