gui/svga.cc

   1 /////////////////////////////////////////////////////////////////////////
   2 // $Id: svga.cc,v 1.17 2008/03/06 21:15:40 sshwarts Exp $
   3 /////////////////////////////////////////////////////////////////////////
   4 //
   5 //  This library is free software; you can redistribute it and/or
   6 //  modify it under the terms of the GNU Lesser General Public
   7 //  License as published by the Free Software Foundation; either
   8 //  version 2 of the License, or (at your option) any later version.
   9 //
  10 //  This library is distributed in the hope that it will be useful,
  11 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 //  Lesser General Public License for more details.
  14 //
  15 //  You should have received a copy of the GNU Lesser General Public
  16 //  License along with this library; if not, write to the Free Software
  17 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18
  19 #define _MULTI_THREAD
  20
  21 // Define BX_PLUGGABLE in files that can be compiled into plugins.  For
  22 // platforms that require a special tag on exported symbols, BX_PLUGGABLE
  23 // is used to know when we are exporting symbols and when we are importing.
  24 #define BX_PLUGGABLE
  25
  26 #include "bochs.h"
  27 #include "iodev.h"
  28 #if BX_WITH_SVGA
  29
  30 #include <stdlib.h>
  31 #include </usr/include/vga.h>
  32 #include <vgagl.h>
  33 #include <vgakeyboard.h>
  34 #include <vgamouse.h>
  35
  36 #include "font/vga.bitmap.h"
  37 //#include "icon_bochs.h"
  38
  39 class bx_svga_gui_c : public bx_gui_c {
  40 public:
  41   bx_svga_gui_c (void);
  42   DECLARE_GUI_VIRTUAL_METHODS()
  43   virtual void set_display_mode (disp_mode_t newmode);
  44 };
  45
  46 // declare one instance of the gui object and call macro to insert the
  47 // plugin code
  48 static bx_svga_gui_c *theGui = NULL;
  49
  50 IMPLEMENT_GUI_PLUGIN_CODE(svga)
  51
  52 #define LOG_THIS theGui->
  53
  54 static unsigned res_x, res_y;
  55 static unsigned fontwidth, fontheight;
  56 static unsigned tilewidth, tileheight;
  57 static unsigned char vgafont[256 * 16];
  58 static int clut8 = 0;
  59 GraphicsContext *screen = NULL;
  60 static int save_vga_mode;
  61 static int save_vga_pal[256 * 3];
  62 static Bit8u fontbuffer[0x2000];
  63
  64 static bx_bool ctrll_pressed = 0;
  65 static unsigned int text_rows=25, text_cols=80;
  66 static unsigned prev_cursor_x=0;
  67 static unsigned prev_cursor_y=0;
  68
  69 void keyboard_handler(int scancode, int press);
  70 void mouse_handler(int button, int dx, int dy, int dz,
  71                     int drx, int dry, int drz);
  72
  73 unsigned char reverse_byteorder(unsigned char b)
  74 {
  75     unsigned char ret = 0;
  76
  77     for (unsigned i=0;i<8;i++){
  78         ret |= (b & 0x01) << (7 - i);
  79         b >>= 1;
  80     }
  81     return ret;
  82 }
  83
  84 void create_vga_font()
  85 {
  86     memcpy(vgafont, bx_vgafont, sizeof(bx_vgafont));
  87
  88     for (unsigned i=0;i< sizeof(bx_vgafont);i++) {
  89         vgafont[i] = reverse_byteorder(vgafont[i]);
  90     }
  91 }
  92
  93 bx_svga_gui_c::bx_svga_gui_c()
  94 {
  95   put("SVGA");
  96 }
  97
  98 void bx_svga_gui_c::specific_init(
  99     int argc,
 100     char **argv,
 101     unsigned x_tilesize,
 102     unsigned y_tilesize,
 103     unsigned header_bar_y)
 104 {
 105   tilewidth = x_tilesize;
 106   tileheight = y_tilesize;
 107
 108   if(vga_init() != 0)
 109   {
 110     LOG_THIS setonoff(LOGLEV_PANIC, ACT_FATAL);
 111     BX_PANIC (("Unable to initialize SVGAlib"));
 112     return;
 113   }
 114
 115   screen = gl_allocatecontext();
 116
 117   fontwidth = 8;
 118   fontheight = 16;
 119   dimension_update(640,400);
 120   create_vga_font();
 121   gl_setfont(fontwidth, fontheight, (void *)vgafont);
 122   gl_setwritemode(FONT_COMPRESSED);
 123
 124   keyboard_init();
 125   keyboard_seteventhandler((__keyboard_handler) keyboard_handler);
 126
 127   vga_setmousesupport(1);
 128   mouse_seteventhandler((__mouse_handler) mouse_handler);
 129   if (vga_ext_set(VGA_EXT_AVAILABLE, VGA_AVAIL_FLAGS) & VGA_CLUT8) {
 130     vga_ext_set(VGA_EXT_SET, VGA_CLUT8);
 131     clut8 = 1;
 132   }
 133   // Save settings to prepare for mode transition in set_display_mode.
 134   // If DISP_MODE_SIM is called first, these values will be used.
 135   save_vga_mode = vga_getcurrentmode();
 136   vga_getpalvec(0, 256, save_vga_pal);
 137 }
 138
 139 void bx_svga_gui_c::text_update(
 140     Bit8u *old_text,
 141     Bit8u *new_text,
 142     unsigned long cursor_x,
 143     unsigned long cursor_y,
 144     bx_vga_tminfo_t tm_info)
 145 {
 146   Bit8u *old_line, *new_line;
 147   unsigned int curs, hchars, i, j, offset, rows, x, y;
 148   char s[] = " ";
 149   int fg, bg;
 150   bx_bool force_update = 0, blink_state, blink_mode;
 151   int text_palette[16];
 152
 153   // first check if the screen needs to be redrawn completely
 154   blink_mode = (tm_info.blink_flags & BX_TEXT_BLINK_MODE) > 0;
 155   blink_state = (tm_info.blink_flags & BX_TEXT_BLINK_STATE) > 0;
 156   if (blink_mode) {
 157     if (tm_info.blink_flags & BX_TEXT_BLINK_TOGGLE)
 158       force_update = 1;
 159   }
 160   if (charmap_updated) {
 161     BX_INFO(("charmap update. Font Height is %d", fontheight));
 162     for (unsigned c = 0; c<256; c++) {
 163       if (char_changed[c]) {
 164         j = c * fontheight;
 165         for(i=0; i<fontheight; i++) {
 166           fontbuffer[j++] = vga_charmap[(c<<5)+i];
 167         }
 168         char_changed[c] = 0;
 169       }
 170     }
 171     gl_setfont(fontwidth, fontheight, (void *)fontbuffer);
 172     force_update = 1;
 173     charmap_updated = 0;
 174   }
 175   for (i=0; i<16; i++) {
 176     text_palette[i] = DEV_vga_get_actl_pal_idx(i);
 177   }
 178
 179   // invalidate character at previous and new cursor location
 180   if((prev_cursor_y < text_rows) && (prev_cursor_x < text_cols)) {
 181     curs = prev_cursor_y * tm_info.line_offset + prev_cursor_x * 2;
 182     old_text[curs] = ~new_text[curs];
 183   }
 184   if((tm_info.cs_start <= tm_info.cs_end) && (tm_info.cs_start < fontheight) &&
 185      (cursor_y < text_rows) && (cursor_x < text_cols)) {
 186     curs = cursor_y * tm_info.line_offset + cursor_x * 2;
 187     old_text[curs] = ~new_text[curs];
 188   } else {
 189     curs = 0xffff;
 190   }
 191
 192   rows = text_rows;
 193   y = 0;
 194   do {
 195     hchars = text_cols;
 196     new_line = new_text;
 197     old_line = old_text;
 198     x = 0;
 199     offset = y * tm_info.line_offset;
 200     do {
 201       if (force_update || (old_text[0] != new_text[0])
 202           || (old_text[1] != new_text[1])) {
 203         s[0] = new_text[0];
 204         fg = text_palette[new_text[1] & 0x0F];
 205         if (blink_mode) {
 206           bg = text_palette[(new_text[1] & 0x70) >> 4];
 207           if (!blink_state && (new_text[1] & 0x80))
 208             fg = bg;
 209         } else {
 210           bg = text_palette[(new_text[1] & 0xF0) >> 4];
 211         }
 212         if (offset == curs) {
 213           gl_setfontcolors(fg, bg);
 214         } else {
 215           gl_setfontcolors(bg, fg);
 216         }
 217         gl_write(x * fontwidth, y * fontheight, s);
 218       }
 219       x++;
 220       new_text+=2;
 221       old_text+=2;
 222       offset+=2;
 223     } while (--hchars);
 224     y++;
 225     new_text = new_line + tm_info.line_offset;
 226     old_text = old_line + tm_info.line_offset;
 227   } while (--rows);
 228
 229   prev_cursor_x = cursor_x;
 230   prev_cursor_y = cursor_y;
 231 }
 232
 233 int bx_svga_gui_c::get_clipboard_text(Bit8u **bytes, Bit32s *nbytes)
 234 {
 235   return 0;
 236 }
 237
 238 int bx_svga_gui_c::set_clipboard_text(char *text_snapshot, Bit32u len)
 239 {
 240   return 0;
 241 }
 242
 243 void bx_svga_gui_c::graphics_tile_update(Bit8u *snapshot, unsigned x, unsigned y)
 244 {
 245   if ((y + tileheight) > res_y) {
 246     gl_putbox(x, y, tilewidth, (res_y - y), snapshot);
 247   } else {
 248     gl_putbox(x, y, tilewidth, tileheight, snapshot);
 249   }
 250 }
 251
 252 static Bit32u vga_to_bx_key(int key)
 253 {
 254     ctrll_pressed = 0;
 255     switch (key) {
 256         case SCANCODE_ESCAPE: return BX_KEY_ESC;
 257         case SCANCODE_1: return BX_KEY_1;
 258         case SCANCODE_2: return BX_KEY_2;
 259         case SCANCODE_3: return BX_KEY_3;
 260         case SCANCODE_4: return BX_KEY_4;
 261         case SCANCODE_5: return BX_KEY_5;
 262         case SCANCODE_6: return BX_KEY_6;
 263         case SCANCODE_7: return BX_KEY_7;
 264         case SCANCODE_8: return BX_KEY_8;
 265         case SCANCODE_9: return BX_KEY_9;
 266         case SCANCODE_0: return BX_KEY_0;
 267
 268         case SCANCODE_MINUS: return BX_KEY_MINUS;
 269         case SCANCODE_EQUAL: return BX_KEY_EQUALS;
 270         case SCANCODE_TAB: return BX_KEY_TAB;
 271         case SCANCODE_BACKSPACE: return BX_KEY_BACKSPACE;
 272
 273         case SCANCODE_Q: return BX_KEY_Q;
 274         case SCANCODE_W: return BX_KEY_W;
 275         case SCANCODE_E: return BX_KEY_E;
 276         case SCANCODE_R: return BX_KEY_R;
 277         case SCANCODE_T: return BX_KEY_T;
 278         case SCANCODE_Y: return BX_KEY_Y;
 279         case SCANCODE_U: return BX_KEY_U;
 280         case SCANCODE_I: return BX_KEY_I;
 281         case SCANCODE_O: return BX_KEY_O;
 282         case SCANCODE_P: return BX_KEY_P;
 283
 284         case SCANCODE_BRACKET_LEFT: return BX_KEY_LEFT_BRACKET;
 285         case SCANCODE_BRACKET_RIGHT: return BX_KEY_RIGHT_BRACKET;
 286
 287         case SCANCODE_ENTER: return BX_KEY_ENTER;
 288         case SCANCODE_LEFTCONTROL:
 289           ctrll_pressed = 1;
 290           return BX_KEY_CTRL_L;
 291
 292         case SCANCODE_A: return BX_KEY_A;
 293         case SCANCODE_S: return BX_KEY_S;
 294         case SCANCODE_D: return BX_KEY_D;
 295         case SCANCODE_F: return BX_KEY_F;
 296         case SCANCODE_G: return BX_KEY_G;
 297         case SCANCODE_H: return BX_KEY_H;
 298         case SCANCODE_J: return BX_KEY_J;
 299         case SCANCODE_K: return BX_KEY_K;
 300         case SCANCODE_L: return BX_KEY_L;
 301
 302         case SCANCODE_SEMICOLON: return BX_KEY_SEMICOLON;
 303         case SCANCODE_APOSTROPHE: return BX_KEY_SINGLE_QUOTE;
 304         case SCANCODE_GRAVE: return BX_KEY_GRAVE;
 305
 306         case SCANCODE_LEFTSHIFT: return BX_KEY_SHIFT_L;
 307         case SCANCODE_BACKSLASH: return BX_KEY_BACKSLASH;
 308
 309         case SCANCODE_Z: return BX_KEY_Z;
 310         case SCANCODE_X: return BX_KEY_X;
 311         case SCANCODE_C: return BX_KEY_C;
 312         case SCANCODE_V: return BX_KEY_V;
 313         case SCANCODE_B: return BX_KEY_B;
 314         case SCANCODE_N: return BX_KEY_N;
 315         case SCANCODE_M: return BX_KEY_M;
 316
 317         case SCANCODE_COMMA: return BX_KEY_COMMA;
 318         case SCANCODE_PERIOD: return BX_KEY_PERIOD;
 319         case SCANCODE_SLASH: return BX_KEY_SLASH;
 320
 321         case SCANCODE_RIGHTSHIFT: return BX_KEY_SHIFT_R;
 322         case SCANCODE_KEYPADMULTIPLY: return BX_KEY_KP_MULTIPLY;
 323
 324         case SCANCODE_LEFTALT: return BX_KEY_ALT_L;
 325         case SCANCODE_SPACE: return BX_KEY_SPACE;
 326         case SCANCODE_CAPSLOCK: return BX_KEY_CAPS_LOCK;
 327
 328         case SCANCODE_F1: return BX_KEY_F1;
 329         case SCANCODE_F2: return BX_KEY_F2;
 330         case SCANCODE_F3: return BX_KEY_F3;
 331         case SCANCODE_F4: return BX_KEY_F4;
 332         case SCANCODE_F5: return BX_KEY_F5;
 333         case SCANCODE_F6: return BX_KEY_F6;
 334         case SCANCODE_F7: return BX_KEY_F7;
 335         case SCANCODE_F8: return BX_KEY_F8;
 336         case SCANCODE_F9: return BX_KEY_F9;
 337         case SCANCODE_F10: return BX_KEY_F10;
 338
 339         case SCANCODE_NUMLOCK: return BX_KEY_NUM_LOCK;
 340         case SCANCODE_SCROLLLOCK: return BX_KEY_SCRL_LOCK;
 341
 342         case SCANCODE_KEYPAD7: return BX_KEY_KP_HOME;
 343         case SCANCODE_KEYPAD8: return BX_KEY_KP_UP;
 344         case SCANCODE_KEYPAD9: return BX_KEY_KP_PAGE_UP;
 345         case SCANCODE_KEYPADMINUS: return BX_KEY_KP_SUBTRACT;
 346         case SCANCODE_KEYPAD4: return BX_KEY_KP_LEFT;
 347         case SCANCODE_KEYPAD5: return BX_KEY_KP_5;
 348         case SCANCODE_KEYPAD6: return BX_KEY_KP_RIGHT;
 349         case SCANCODE_KEYPADPLUS: return BX_KEY_KP_ADD;
 350         case SCANCODE_KEYPAD1: return BX_KEY_KP_END;
 351         case SCANCODE_KEYPAD2: return BX_KEY_KP_DOWN;
 352         case SCANCODE_KEYPAD3: return BX_KEY_KP_PAGE_DOWN;
 353         case SCANCODE_KEYPAD0: return BX_KEY_KP_INSERT;
 354 //      case SCANCODE_KEYPADPERIOD: return BX_KEY_KP_; /* ??? */
 355
 356 //      case SCANCODE_LESS: return BX_KEY_KP_LESS;      /* ??? */
 357
 358         case SCANCODE_F11: return BX_KEY_F11;
 359         case SCANCODE_F12: return BX_KEY_F12;
 360
 361         case SCANCODE_KEYPADENTER: return BX_KEY_KP_ENTER;
 362         case SCANCODE_RIGHTCONTROL: return BX_KEY_CTRL_R;
 363         case SCANCODE_KEYPADDIVIDE: return BX_KEY_KP_DIVIDE;
 364         case SCANCODE_PRINTSCREEN: return BX_KEY_PRINT;
 365         case SCANCODE_RIGHTALT: return BX_KEY_ALT_R;
 366         case SCANCODE_BREAK: return BX_KEY_PAUSE;
 367
 368         case SCANCODE_HOME: return BX_KEY_HOME;
 369         case SCANCODE_CURSORBLOCKUP: return BX_KEY_UP;
 370         case SCANCODE_PAGEUP: return BX_KEY_PAGE_UP;
 371         case SCANCODE_CURSORBLOCKLEFT: return BX_KEY_LEFT;
 372         case SCANCODE_CURSORBLOCKRIGHT: return BX_KEY_RIGHT;
 373         case SCANCODE_END: return BX_KEY_END;
 374         case SCANCODE_CURSORBLOCKDOWN: return BX_KEY_DOWN;
 375         case SCANCODE_PAGEDOWN: return BX_KEY_PAGE_DOWN;
 376         case SCANCODE_INSERT: return BX_KEY_INSERT;
 377         case SCANCODE_REMOVE: return BX_KEY_DELETE;
 378
 379         case SCANCODE_RIGHTWIN: return BX_KEY_WIN_R;
 380         case SCANCODE_LEFTWIN: return BX_KEY_WIN_L;
 381
 382         default: return 0;
 383     }
 384 }
 385
 386 void keyboard_handler(int scancode, int press)
 387 {
 388     if (scancode != SCANCODE_F12) {
 389         int bx_key = vga_to_bx_key(scancode);
 390         Bit32u key_state;
 391
 392         if (press) {
 393             key_state = BX_KEY_PRESSED;
 394         } else {
 395             key_state = BX_KEY_RELEASED;
 396         }
 397
 398         DEV_kbd_gen_scancode(bx_key | key_state);
 399     } else {
 400         BX_INFO(("F12 pressed"));
 401         // show runtime options menu, which uses stdin/stdout
 402         SIM->configuration_interface (NULL, CI_RUNTIME_CONFIG);
 403     }
 404 }
 405
 406 void mouse_handler(int button, int dx, int dy, int dz,
 407                     int drx, int dry, int drz)
 408 {
 409   int buttons = 0;
 410
 411   if (button & MOUSE_LEFTBUTTON) {
 412     buttons |= 0x01;
 413   }
 414   if (button & MOUSE_RIGHTBUTTON) {
 415     buttons |= 0x02;
 416   }
 417   if (button & MOUSE_MIDDLEBUTTON) {
 418     buttons |= 0x04;
 419   }
 420   if (ctrll_pressed && ((buttons == 0x04) || (buttons == 0x05))) {
 421     bx_bool old = SIM->get_param_bool(BXPN_MOUSE_ENABLED)->get();
 422     SIM->get_param_bool(BXPN_MOUSE_ENABLED)->set(!old);
 423   } else {
 424     DEV_mouse_motion((int) (0.25 * dx), (int) -(0.25 * dy), buttons);
 425   }
 426 }
 427
 428 void bx_svga_gui_c::handle_events(void)
 429 {
 430   keyboard_update();
 431   keyboard_clearstate();
 432   mouse_update();
 433 }
 434
 435 void bx_svga_gui_c::flush(void)
 436 {
 437   gl_copyscreen(screen);
 438 }
 439
 440 void bx_svga_gui_c::clear_screen(void)
 441 {
 442   gl_clearscreen(0);
 443 }
 444
 445 bx_bool bx_svga_gui_c::palette_change(
 446     unsigned index,
 447     unsigned red,
 448     unsigned green,
 449     unsigned blue)
 450 {
 451   if(index > 255) return 0;
 452
 453   // without VGA_CLUT8 extension we have only 6 bits for each r,g,b value
 454   if (!clut8 && (red > 63 || green > 63 || blue > 63)) {
 455         red   = red >> 2;
 456         green = green >> 2;
 457         blue  = blue >> 2;
 458   }
 459
 460   vga_setpalette(index, red, green, blue);
 461
 462   return 1;
 463 }
 464
 465
 466 void bx_svga_gui_c::dimension_update(
 467     unsigned x,
 468     unsigned y,
 469     unsigned fheight,
 470     unsigned fwidth,
 471     unsigned bpp)
 472 {
 473   int newmode = 0;
 474
 475   if (bpp > 8) {
 476     BX_PANIC(("%d bpp graphics mode not supported yet", bpp));
 477   }
 478   if(fheight > 0)
 479   {
 480     text_cols = x / fwidth;
 481     text_rows = y / fheight;
 482     fontheight = fheight;
 483     if (fwidth != 8) {
 484       x = x * 8 / fwidth;
 485     }
 486     fontwidth = 8;
 487   }
 488
 489   if ((x == res_x) && (y == res_y)) return;
 490
 491   if (x == 640 && y == 480) {
 492     newmode = G640x480x256;
 493   } else if (x == 640 && y == 400) {
 494     newmode = G640x400x256;
 495   } else if (x == 800 && y == 600) {
 496     newmode = G800x600x256;
 497   } else if (x == 1024 && y == 768) {
 498     newmode = G1024x768x256;
 499   }
 500
 501   if (!vga_hasmode(newmode)) {
 502     newmode = G640x480x256; // trying "default" mode...
 503   }
 504
 505   vga_getpalvec(0, 256, save_vga_pal);
 506   if (vga_setmode(newmode) != 0)
 507   {
 508       LOG_THIS setonoff(LOGLEV_PANIC, ACT_FATAL);
 509       BX_PANIC (("Unable to set requested videomode: %ix%i", x, y));
 510   }
 511
 512   gl_setcontextvga(newmode);
 513   gl_getcontext(screen);
 514   gl_setcontextvgavirtual(newmode);
 515   vga_setpalvec(0, 256, save_vga_pal);
 516   save_vga_mode = newmode;
 517
 518   res_x = x;
 519   res_y = y;
 520 }
 521
 522
 523 unsigned bx_svga_gui_c::create_bitmap(
 524     const unsigned char *bmap,
 525     unsigned xdim,
 526     unsigned ydim)
 527 {
 528   return 0;
 529 }
 530
 531
 532 unsigned bx_svga_gui_c::headerbar_bitmap(
 533     unsigned bmap_id,
 534     unsigned alignment,
 535     void (*f)(void))
 536 {
 537   return 0;
 538 }
 539
 540 void bx_svga_gui_c::replace_bitmap(unsigned hbar_id, unsigned bmap_id)
 541 {
 542 }
 543
 544 void bx_svga_gui_c::show_headerbar(void)
 545 {
 546 }
 547
 548
 549 void bx_svga_gui_c::mouse_enabled_changed_specific (bx_bool val)
 550 {
 551 }
 552
 553
 554 void headerbar_click(int x)
 555 {
 556 }
 557
 558 void bx_svga_gui_c::exit(void)
 559 {
 560   vga_setmode(TEXT);
 561   keyboard_close();
 562   mouse_close();
 563 }
 564
 565 void bx_svga_gui_c::set_display_mode (disp_mode_t newmode)
 566 {
 567   // if no mode change, do nothing.
 568   if (disp_mode == newmode) return;
 569   // remember the display mode for next time
 570   disp_mode = newmode;
 571   switch (newmode) {
 572     case DISP_MODE_CONFIG:
 573       BX_DEBUG (("switch to configuration mode (back to console)"));
 574       // remember old values and switch to text mode
 575       save_vga_mode = vga_getcurrentmode();
 576       vga_getpalvec(0, 256, save_vga_pal);
 577       keyboard_close();
 578       vga_setmode(TEXT);
 579       break;
 580     case DISP_MODE_SIM:
 581       BX_DEBUG (("switch to simulation mode (fullscreen)"));
 582       keyboard_init();
 583       keyboard_seteventhandler((__keyboard_handler) keyboard_handler);
 584       vga_setmode(save_vga_mode);
 585       vga_setpalvec(0, 256, save_vga_pal);
 586       break;
 587   }
 588 }
 589
 590 #endif /* if BX_WITH_SVGA */