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 2 // 2 Screens of text
22 //#define DEFAULT_OUTPUT "VGA"
23 #define DEFAULT_OUTPUT "BochsGA"
24 //#define DEFAULT_OUTPUT "Vesa"
25 #define DEFAULT_INPUT "PS2Keyboard"
26 #define DEFAULT_WIDTH 80
27 #define DEFAULT_HEIGHT 25
28 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
30 #define VT_FLAG_HIDECSR 0x01
31 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
34 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
35 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
41 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
42 int Flags; //!< Flags (see VT_FLAG_*)
43 short Width; //!< Virtual Width
44 short Height; //!< Virtual Height
46 int ViewPos; //!< View Buffer Offset (Text Only)
47 int WritePos; //!< Write Buffer Offset (Text Only)
48 Uint32 CurColour; //!< Current Text Colour
50 int InputRead; //!< Input buffer read position
51 int InputWrite; //!< Input buffer write position
52 char InputBuffer[MAX_INPUT_CHARS8];
57 char Name[2]; //!< Name of the terminal
62 extern void Debug_SetKTerminal(char *File);
65 int VT_Install(char **Arguments);
66 char *VT_ReadDir(tVFS_Node *Node, int Pos);
67 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
68 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
69 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
70 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
71 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
72 void VT_SetResolution(int IsTextMode, int Width, int Height);
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 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
105 // --- Video State ---
106 short giVT_RealWidth; //!< Real Width
107 short giVT_RealHeight; //!< Real Height
108 // --- Driver Handles ---
109 char *gsVT_OutputDevice = NULL;
110 char *gsVT_InputDevice = NULL;
111 int giVT_OutputDevHandle = -2;
112 int giVT_InputDevHandle = -2;
113 // --- Key States --- (Used for VT Switching/Magic Combos)
114 int gbVT_CtrlDown = 0;
115 int gbVT_AltDown = 0;
116 int gbVT_SysrqDown = 0;
120 * \fn int VT_Install(char **Arguments)
121 * \brief Installs the Virtual Terminal Driver
123 int VT_Install(char **Arguments)
125 char **args = Arguments;
132 for( ; (arg = *args); args++ )
134 if(arg[0] != '-') continue;
140 if(args[1] == NULL) break;
141 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
142 gsVT_OutputDevice = malloc(strlen(args[1])+1);
143 strcpy(gsVT_OutputDevice, args[1]);
149 if(args[1] == NULL) break;
150 if(gsVT_InputDevice) free(gsVT_InputDevice);
151 gsVT_InputDevice = malloc(strlen(args[1])+1);
152 strcpy(gsVT_InputDevice, args[1]);
160 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
161 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
163 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
164 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
167 for( i = 0; i < NUM_VTS; i++ )
169 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
170 gVT_Terminals[i].Flags = 0;
171 gVT_Terminals[i].Width = DEFAULT_WIDTH;
172 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
173 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
174 gVT_Terminals[i].WritePos = 0;
175 gVT_Terminals[i].ViewPos = 0;
177 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
179 gVT_Terminals[i].Name[0] = '0'+i;
180 gVT_Terminals[i].Name[1] = '\0';
181 gVT_Terminals[i].Node.Inode = i;
182 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
183 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
185 gVT_Terminals[i].Node.Read = VT_Read;
186 gVT_Terminals[i].Node.Write = VT_Write;
187 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
191 DevFS_AddDevice( &gVT_DrvInfo );
193 // Set kernel output to VT0
194 Debug_SetKTerminal("/Devices/VTerm/0");
196 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
197 return MODULE_ERR_OK;
201 * \fn void VT_InitOutput()
202 * \brief Initialise Video Output
206 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
208 VT_SetResolution(1, 640, 480);
212 * \fn void VT_InitInput()
213 * \brief Initialises the input
217 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
218 if(giVT_InputDevHandle == -1) return ;
219 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
223 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
224 * \brief Read from the VTerm Directory
226 char *VT_ReadDir(tVFS_Node *Node, int Pos)
228 if(Pos < 0) return NULL;
229 if(Pos >= NUM_VTS) return NULL;
230 return strdup( gVT_Terminals[Pos].Name );
234 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
235 * \brief Find an item in the VTerm directory
237 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
241 ENTER("pNode sName", Node, Name);
243 // Open the input and output files if needed
244 if(giVT_OutputDevHandle == -2) VT_InitOutput();
245 if(giVT_InputDevHandle == -2) VT_InitInput();
248 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
259 LEAVE('p', &gVT_Terminals[num].Node);
260 return &gVT_Terminals[num].Node;
264 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
265 * \brief Control the VTerm Driver
267 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
272 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
273 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
274 case DRV_IOCTL_VERSION: return VERSION;
275 case DRV_IOCTL_LOOKUP: return 0;
277 case 4: // Get Video Driver
278 if(Data) strcpy(Data, gsVT_OutputDevice);
279 return strlen(gsVT_OutputDevice);
281 case 5: // Set Video Driver
282 if(!Data) return -EINVAL;
283 if(Threads_GetUID() != 0) return -EACCES;
287 free(gsVT_OutputDevice);
289 gsVT_OutputDevice = malloc(len+1);
290 strcpy(gsVT_OutputDevice, Data);
292 VFS_Close(giVT_OutputDevHandle);
293 giVT_OutputDevHandle = -1;
302 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
303 * \brief Read from a virtual terminal
305 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
308 tVTerm *term = &gVT_Terminals[ Node->Inode ];
310 // Check current mode
316 while(term->InputRead == term->InputWrite) Threads_Yield();
318 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
321 term->InputRead %= MAX_INPUT_CHARS8;
329 while(term->InputRead == term->InputWrite) Threads_Yield();
330 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
333 term->InputRead %= MAX_INPUT_CHARS32;
341 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
342 * \brief Write to a virtual terminal
344 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
346 tVTerm *term = &gVT_Terminals[ Node->Inode ];
352 VT_int_PutString(term, Buffer, Length);
355 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
359 x = Offset/4; y = x / term->Width; x %= term->Width;
360 w = Length/4+x; h = w / term->Width; w %= term->Width;
363 VFS_WriteAt( giVT_OutputDevHandle,
364 (x+y*term->RealWidth)*4,
368 Buffer = (void*)( (Uint)Buffer + term->Width*term->Height*4 );
374 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
382 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
383 * \brief Call an IO Control on a virtual terminal
385 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
388 tVTerm *term = Node->ImplPtr;
389 ENTER("pNode iId pData", Node, Id, Data);
391 if(Id >= DRV_IOCTL_LOOKUP) {
392 if( Threads_GetUID() != 0 ) return -1;
398 LEAVE('i', DRV_TYPE_TERMINAL);
399 return DRV_TYPE_TERMINAL;
400 case DRV_IOCTL_IDENT:
401 memcpy(Data, "VT\0\0", 4);
404 case DRV_IOCTL_VERSION:
407 case DRV_IOCTL_LOOKUP:
411 // Get/Set the mode (and apply any changes)
412 case TERM_IOCTL_MODETYPE:
415 if(term->Mode != *iData)
416 VT_int_ChangeMode(term, *iData);
418 // Update the screen dimensions
419 if(giVT_CurrentTerminal == Node->Inode)
420 VT_SetTerminal( giVT_CurrentTerminal );
422 LEAVE('i', term->Mode);
425 // Get/set the terminal width
426 case TERM_IOCTL_WIDTH:
427 if(Data != NULL) term->Width = *iData;
428 Log("VT_Terminal_IOCtl - RETURN term->Width = %i", term->Width);
429 LEAVE('i', term->Width);
432 // Get/set the terminal height
433 case TERM_IOCTL_HEIGHT:
434 if(Data != NULL) term->Height = *iData;
435 Log("VT_Terminal_IOCtl - RETURN term->Height = %i", term->Height);
436 LEAVE('i', term->Height);
439 case TERM_IOCTL_FORCESHOW:
440 VT_SetTerminal( Node->Inode );
448 void VT_SetResolution(int IsTextMode, int Width, int Height)
450 tVideo_IOCtl_Mode mode = {0};
453 // Create the video mode
455 mode.height = Height;
460 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
462 giVT_RealWidth = mode.width;
463 giVT_RealHeight = mode.height;
464 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
469 tmp = VIDEO_BUFFMT_TEXT;
471 tmp = VIDEO_BUFFMT_FRAMEBUFFER;
472 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp );
476 * \fn void VT_SetTerminal(int ID)
477 * \brief Set the current terminal
479 void VT_SetTerminal(int ID)
481 // Update current terminal ID
482 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
483 giVT_CurrentTerminal = ID;
484 gpVT_CurTerm = &gVT_Terminals[ID];
487 if( !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
489 tVideo_IOCtl_Pos pos;
490 pos.x = gpVT_CurTerm->WritePos % gpVT_CurTerm->Width;
491 pos.y = gpVT_CurTerm->WritePos / gpVT_CurTerm->Width;
492 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
495 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
496 VT_SetResolution( 1, gpVT_CurTerm->Width*giVT_CharWidth, gpVT_CurTerm->Height*giVT_CharHeight );
498 VT_SetResolution( 0, gpVT_CurTerm->Width, gpVT_CurTerm->Height );
501 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
505 * \fn void VT_KBCallBack(Uint32 Codepoint)
506 * \brief Called on keyboard interrupt
507 * \param Codepoint Pseudo-UTF32 character
509 * Handles a key press and sends the key code to the user's buffer.
510 * If the code creates a kernel-magic sequence, it is not passed to the
511 * user and is handled in-kernel.
513 void VT_KBCallBack(Uint32 Codepoint)
515 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
517 // How the hell did we get a Codepoint of zero?
518 if(Codepoint == 0) return;
521 if( Codepoint & 0x80000000 )
523 Codepoint &= 0x7FFFFFFF;
527 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
528 case KEY_LSHIFT: gbVT_AltDown = 0; break;
546 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
547 case KEY_LSHIFT: gbVT_AltDown = 1; break;
561 if(!gbVT_AltDown || !gbVT_CtrlDown)
566 case KEY_F1: VT_SetTerminal(0); return;
567 case KEY_F2: VT_SetTerminal(1); return;
568 case KEY_F3: VT_SetTerminal(2); return;
569 case KEY_F4: VT_SetTerminal(3); return;
570 case KEY_F5: VT_SetTerminal(4); return;
571 case KEY_F6: VT_SetTerminal(5); return;
572 case KEY_F7: VT_SetTerminal(6); return;
573 case KEY_F8: VT_SetTerminal(7); return;
574 case KEY_F9: VT_SetTerminal(8); return;
575 case KEY_F10: VT_SetTerminal(9); return;
576 case KEY_F11: VT_SetTerminal(10); return;
577 case KEY_F12: VT_SetTerminal(11); return;
579 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
580 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
582 gpVT_CurTerm->ViewPos = 0;
585 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*(gpVT_CurTerm->Height*(VT_SCROLLBACK-1)) )
586 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
588 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*(gpVT_CurTerm->Height*(VT_SCROLLBACK-1));
594 if(term->Mode == TERM_MODE_TEXT)
599 // Ignore Modifer Keys
600 if(Codepoint > KEY_MODIFIERS) return;
602 // Get UTF-8/ANSI Encoding
606 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
610 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
614 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
618 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
623 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
624 //len = 4; // Commented out until I'm sure
630 // Attempt to encode in UTF-8
632 len = WriteUTF8( buf, Codepoint );
634 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
640 // Unprintable / Don't Pass
645 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
646 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
648 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
649 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
651 // Roll the buffer over
652 term->InputWrite += len;
653 term->InputWrite %= MAX_INPUT_CHARS8;
654 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
655 term->InputRead = term->InputWrite + 1;
656 term->InputRead %= MAX_INPUT_CHARS8;
662 // Encode the raw UTF-32 Key
663 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
665 term->InputWrite %= MAX_INPUT_CHARS32;
666 if(term->InputRead == term->InputWrite) {
668 term->InputRead %= MAX_INPUT_CHARS32;
674 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
675 * \brief Print a string to the Virtual Terminal
677 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
681 for( i = 0; i < Count; i++ )
683 if( Buffer[i] == 0x1B ) // Escape Sequence
686 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
690 if( Buffer[i] < 128 ) // Plain ASCII
691 VT_int_PutChar(Term, Buffer[i]);
693 i += ReadUTF8(&Buffer[i], &val);
694 VT_int_PutChar(Term, val);
699 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
701 tVideo_IOCtl_Pos pos;
702 pos.x = Term->WritePos % Term->Width;
703 pos.y = Term->WritePos / Term->Width;
704 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
709 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
710 * \brief Clears a line in a virtual terminal
712 void VT_int_ClearLine(tVTerm *Term, int Num)
715 //ENTER("pTerm iNum", Term, Num);
716 for( i = Term->Width; i--; )
718 Term->Text[ Num*Term->Width + i ].Ch = 0;
719 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
725 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
726 * \brief Parses a VT100 Escape code
728 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
733 int args[4] = {0,0,0,0};
741 while('0' <= c && c <= '9') {
746 if( j != 1 ) argc ++;
749 // Get string (what does this do?)
757 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
763 if(argc == 1) tmp = args[0];
766 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
767 Term->WritePos -= Term->WritePos % Term->Width;
769 Term->WritePos -= tmp;
774 if(argc == 1) tmp = args[0];
776 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
777 Term->WritePos -= Term->WritePos % Term->Width;
778 Term->WritePos += Term->Width - 1;
780 Term->WritePos += tmp;
790 int i = Term->Height * VT_SCROLLBACK;
791 while( i-- ) VT_int_ClearLine(Term, i);
794 VT_int_UpdateScreen(Term, 1);
804 if( 0 <= args[argc] && args[argc] <= 8)
808 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
809 case 1: Term->CurColour |= 0x80000000; break; // Bright
810 case 2: Term->CurColour &= ~0x80000000; break; // Dim
814 else if(30 <= args[argc] && args[argc] <= 37) {
815 Term->CurColour &= 0xF000FFFF;
816 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
819 else if(40 <= args[argc] && args[argc] <= 47) {
820 Term->CurColour &= 0xFFFF8000;
821 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
837 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
838 * \brief Write a single character to a VTerm
840 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
843 //ENTER("pTerm xCh", Term, Ch);
844 //LOG("Term = {WritePos:%i, ViewPos:%i}", Term->WritePos, Term->ViewPos);
848 case '\0': return; // Ignore NULL byte
850 Term->WritePos += Term->Width;
852 Term->WritePos -= Term->WritePos % Term->Width;
857 Term->Text[ Term->WritePos ].Ch = '\0';
858 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
860 } while(Term->WritePos & 7);
864 // Backspace is invalid at Offset 0
865 if(Term->WritePos == 0) break;
869 if(Term->Text[ Term->WritePos ].Ch != '\0') {
870 Term->Text[ Term->WritePos ].Ch = 0;
871 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
875 i = 7; // Limit it to 8
877 Term->Text[ Term->WritePos ].Ch = 0;
878 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
880 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
881 if(Term->Text[ Term->WritePos ].Ch != '\0')
886 Term->Text[ Term->WritePos ].Ch = Ch;
887 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
894 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
897 Term->WritePos -= Term->Width;
899 // Update view position
900 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
901 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
902 if(Term->ViewPos > base) Term->ViewPos = base;
904 // Scroll terminal cache
905 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
910 &Term->Text[Term->Width],
911 (Term->Width*Term->Height*VT_SCROLLBACK-Term->Width)*sizeof(tVT_Char)
915 for( i = 0; i < Term->Width; i ++ )
917 Term->Text[ base + i ].Ch = 0;
918 Term->Text[ base + i ].Colour = Term->CurColour;
921 //LOG("Scrolled buffer");
922 VT_int_UpdateScreen( Term, 1 );
924 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
926 Term->ViewPos += Term->Width;
927 //LOG("Scrolled screen");
928 VT_int_UpdateScreen( Term, 1 );
931 VT_int_UpdateScreen( Term, 0 );
937 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
938 * \brief Updates the video framebuffer
940 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
942 // Only update if this is the current terminal
943 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
945 if( Term->Mode == TERM_MODE_TEXT )
948 //LOG("UpdateAll = 1");
949 //LOG("VFS_WriteAt(0x%x, 0, %i*sizeof(tVT_Char), &Term->Text[%i])",
950 // giVT_OutputDevHandle, Term->Width*Term->Height, Term->ViewPos);
952 giVT_OutputDevHandle,
954 Term->Width*Term->Height*sizeof(tVT_Char),
955 &Term->Text[Term->ViewPos]
958 int pos = Term->WritePos - Term->WritePos % Term->Width;
959 //LOG("UpdateAll = 0");
960 //LOG("VFS_WriteAt(0x%x, %i*sizeof(tVT_Char), %i*sizeof(tVT_Char), &Term->Text[%i])",
961 // giVT_OutputDevHandle, (pos - Term->ViewPos), Term->Width, pos);
963 giVT_OutputDevHandle,
964 (pos - Term->ViewPos)*sizeof(tVT_Char),
965 Term->Width*sizeof(tVT_Char),
973 giVT_OutputDevHandle,
975 Term->Width*Term->Height*sizeof(Uint32),
982 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
983 * \brief Change the mode of a VTerm
985 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
991 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
995 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
997 //case TERM_MODE_OPENGL:
1001 Term->Mode = NewMode;
1007 #define MONOSPACE_FONT 10816
1009 #if MONOSPACE_FONT == 10808 // 8x8
1010 # include "vterm_font_8x8.h"
1011 #elif MONOSPACE_FONT == 10816 // 8x16
1012 # include "vterm_font_8x16.h"
1015 // === PROTOTYPES ===
1016 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1019 int giVT_CharWidth = FONT_WIDTH;
1020 int giVT_CharHeight = FONT_HEIGHT;
1024 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1025 * \brief Render a font character
1027 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1030 Uint32 *buf = Buffer;
1033 font = VT_Font_GetChar(Codepoint);
1035 for(y = 0; y < FONT_HEIGHT; y ++)
1037 for(x = 0; x < FONT_WIDTH; x ++)
1039 if(*font & (1 << (FONT_WIDTH-x-1)))
1050 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1053 Uint32 VT_Colour12to24(Uint16 Col12)
1058 ret = (tmp << 0) | (tmp << 4);
1059 tmp = (Col12 & 0xF0) >> 4;
1060 ret |= (tmp << 8) | (tmp << 12);
1061 tmp = (Col12 & 0xF00) >> 8;
1062 ret |= (tmp << 16) | (tmp << 20);
1067 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1068 * \brief Gets an index into the font array given a Unicode Codepoint
1069 * \note See http://en.wikipedia.org/wiki/CP437
1071 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1075 return &VTermFont[Codepoint*FONT_HEIGHT];
1078 case 0xC7: index = 128; break; // Ç
1079 case 0xFC: index = 129; break; // ü
1080 case 0xE9: index = 130; break; // é
1081 case 0xE2: index = 131; break; // â
1082 case 0xE4: index = 132; break; // ä
1083 case 0xE0: index = 133; break; // à
1084 case 0xE5: index = 134; break; // å
1085 case 0xE7: index = 135; break; // ç
1086 case 0xEA: index = 136; break; // ê
1087 case 0xEB: index = 137; break; // ë
1088 case 0xE8: index = 138; break; // è
1089 case 0xEF: index = 139; break; // ï
1090 case 0xEE: index = 140; break; // î
1091 case 0xEC: index = 141; break; // ì
1092 case 0xC4: index = 142; break; // Ä
1093 case 0xC5: index = 143; break; // Å
1096 return &VTermFont[index*FONT_HEIGHT];
1099 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1100 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1101 EXPORT(VT_Font_Render);
1102 EXPORT(VT_Colour12to24);