Shamusworld >> Repos - apple2/blob - src/gui/gui.cpp

   1 //
   2 // gui.cpp
   3 //
   4 // Graphical User Interface support
   5 // by James Hammons
   6 // © 2014-2019 Underground Software
   7 //
   8 // JLH = James Hammons <jlhamm@acm.org>
   9 //
  10 // WHO  WHEN        WHAT
  11 // ---  ----------  -----------------------------------------------------------
  12 // JLH  02/03/2006  Created this file
  13 // JLH  03/13/2006  Added functions to allow shutting down GUI externally
  14 // JLH  03/22/2006  Finalized basic multiple window support
  15 // JLH  03/03/2014  Refactored GUI to use SDL 2, more modern approach as well
  16 //
  17 // STILL TO DO:
  18 //
  19 // - Memory leak on quitting with a window active [DONE]
  20 // - Multiple window handling [DONE]
  21 //
  22
  23 #include "gui.h"
  24 #include <vector>
  25 #include "apple2.h"
  26 #include "config.h"
  27 #include "diskselector.h"
  28 #include "elements.h"
  29 #include "floppydrive.h"
  30 #include "font10pt.h"
  31 #include "log.h"
  32 #include "video.h"
  33
  34 // Icons, in GIMP "C" format
  35 #include "gfx/icon-selection.c"
  36 #include "gfx/disk-icon.c"
  37 #include "gfx/power-off-icon.c"
  38 #include "gfx/power-on-icon.c"
  39 #include "gfx/disk-swap-icon.c"
  40 #include "gfx/disk-door-open.c"
  41 #include "gfx/disk-door-closed.c"
  42 #include "gfx/save-state-icon.c"
  43 #include "gfx/load-state-icon.c"
  44 #include "gfx/config-icon.c"
  45
  46
  47 // Okay, this is ugly but works and I can't think of any better way to handle
  48 // this. So what we do when we pass the GIMP bitmaps into a function is pass
  49 // them as a (void *) and then cast them as type (Bitmap *) in order to use
  50 // them. Yes, it's ugly. Come up with something better!
  51
  52 struct Bitmap {
  53         unsigned int width;
  54         unsigned int height;
  55         unsigned int bytesPerPixel;                                     // 3:RGB, 4:RGBA
  56         unsigned char pixelData[];
  57 };
  58
  59
  60 const char numeralOne[(7 * 7) + 1] =
  61         "  @@   "
  62         " @@@   "
  63         "@@@@   "
  64         "  @@   "
  65         "  @@   "
  66         "  @@   "
  67         "@@@@@@ ";
  68
  69 const char numeralTwo[(7 * 7) + 1] =
  70         " @@@@@ "
  71         "@@   @@"
  72         "    @@@"
  73         "  @@@@ "
  74         " @@@   "
  75         "@@     "
  76         "@@@@@@@";
  77
  78 const char ejectIcon[(8 * 7) + 1] =
  79         "   @@   "
  80         "  @@@@  "
  81         " @@@@@@ "
  82         "@@@@@@@@"
  83         "        "
  84         "@@@@@@@@"
  85         "@@@@@@@@";
  86
  87 const char newDiskIcon[(30 * 6) + 1] =
  88         "@@   @@ @@@@@ @@   @@     @@  "
  89         "@@@  @@ @@    @@   @@    @@@@ "
  90         "@@@@ @@ @@@@  @@ @ @@   @@@@@@"
  91         "@@ @@@@ @@    @@@@@@@     @@  "
  92         "@@  @@@ @@    @@@@@@@  @@@@@  "
  93         "@@   @@ @@@@@ @@   @@  @@@@   ";
  94
  95 const char driveLight[(5 * 5) + 1] =
  96         " @@@ "
  97         "@@@@@"
  98         "@@@@@"
  99         "@@@@@"
 100         " @@@ ";
 101
 102
 103 SDL_Texture * GUI::overlay = NULL;
 104 SDL_Rect GUI::olDst;
 105 int GUI::sidebarState = SBS_HIDDEN;
 106 int32_t GUI::dx = 0;
 107 int32_t GUI::iconSelected = -1;
 108 bool GUI::hasKeyboardFocus = false;
 109 bool GUI::powerOnState = true;
 110
 111 int32_t lastIconSelected = -1;
 112 SDL_Texture * iconSelection = NULL;
 113 SDL_Texture * diskIcon = NULL;
 114 SDL_Texture * disk1Icon = NULL;
 115 SDL_Texture * disk2Icon = NULL;
 116 SDL_Texture * powerOnIcon = NULL;
 117 SDL_Texture * powerOffIcon = NULL;
 118 SDL_Texture * diskSwapIcon = NULL;
 119 SDL_Texture * stateSaveIcon = NULL;
 120 SDL_Texture * stateLoadIcon = NULL;
 121 SDL_Texture * configIcon = NULL;
 122 SDL_Texture * doorOpen = NULL;
 123 SDL_Texture * doorClosed = NULL;
 124 uint32_t texturePointer[128 * 380];
 125 const char iconHelp[7][80] = { "Turn emulated Apple off/on",
 126         "Insert floppy image into drive #1", "Insert floppy image into drive #2",
 127         "Swap disks", "Save emulator state", "Load emulator state",
 128         "Configure Apple2" };
 129 bool disk1EjectHovered = false;
 130 bool disk2EjectHovered = false;
 131 bool disk1NewDiskHovered = false;
 132 bool disk2NewDiskHovered = false;
 133
 134 SDL_Texture * GUI::charStamp = NULL;
 135 uint32_t GUI::stamp[FONT_WIDTH * FONT_HEIGHT];
 136
 137 #define SIDEBAR_X_POS  (VIRTUAL_SCREEN_WIDTH - 80)
 138
 139 //std::vector<void *> objList;
 140
 141
 142 GUI::GUI(void)
 143 {
 144 }
 145
 146
 147 GUI::~GUI(void)
 148 {
 149 }
 150
 151
 152 void GUI::Init(SDL_Renderer * renderer)
 153 {
 154         overlay = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ABGR8888,
 155                 SDL_TEXTUREACCESS_TARGET, 128, 380);
 156         charStamp = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,
 157                 SDL_TEXTUREACCESS_TARGET, FONT_WIDTH, FONT_HEIGHT);
 158
 159         if (!overlay)
 160         {
 161                 WriteLog("GUI: Could not create overlay!\n");
 162                 return;
 163         }
 164
 165         if (SDL_SetTextureBlendMode(overlay, SDL_BLENDMODE_BLEND) == -1)
 166                 WriteLog("GUI: Could not set blend mode for overlay.\n");
 167
 168         if (SDL_SetTextureBlendMode(charStamp, SDL_BLENDMODE_BLEND) == -1)
 169                 WriteLog("GUI: Could not set blend mode for charStamp.\n");
 170
 171         for(uint32_t i=0; i<128*380; i++)
 172                 texturePointer[i] = 0xB0A000A0;
 173
 174         SDL_UpdateTexture(overlay, NULL, texturePointer, 128 * sizeof(Uint32));
 175
 176         olDst.x = VIRTUAL_SCREEN_WIDTH;
 177         olDst.y = 2;
 178         olDst.w = 128;
 179         olDst.h = 380;
 180
 181         iconSelection  = CreateTexture(renderer, &icon_selection);
 182         diskIcon       = CreateTexture(renderer, &disk_icon);
 183         doorOpen       = CreateTexture(renderer, &door_open);
 184         doorClosed     = CreateTexture(renderer, &door_closed);
 185         disk1Icon      = CreateTexture(renderer, &disk_icon);
 186         disk2Icon      = CreateTexture(renderer, &disk_icon);
 187         powerOffIcon   = CreateTexture(renderer, &power_off);
 188         powerOnIcon    = CreateTexture(renderer, &power_on);
 189         diskSwapIcon   = CreateTexture(renderer, &disk_swap);
 190         stateSaveIcon  = CreateTexture(renderer, &save_state);
 191         stateLoadIcon  = CreateTexture(renderer, &load_state);
 192         configIcon     = CreateTexture(renderer, &config);
 193
 194         // Set up drive icons in their current states
 195 //      AssembleDriveIcon(renderer, 0);
 196 //      AssembleDriveIcon(renderer, 1);
 197
 198         if (SDL_SetRenderTarget(renderer, overlay) < 0)
 199         {
 200                 WriteLog("GUI: Could not set Render Target to overlay... (%s)\n", SDL_GetError());
 201         }
 202         else
 203         {
 204                 DrawSidebarIcons(renderer);
 205                 // Set render target back to default
 206                 SDL_SetRenderTarget(renderer, NULL);
 207         }
 208
 209         DiskSelector::Init(renderer);
 210         Config::Init(renderer);
 211         WriteLog("GUI: Successfully initialized.\n");
 212 }
 213
 214
 215 SDL_Texture * GUI::CreateTexture(SDL_Renderer * renderer, const void * source)
 216 {
 217         Bitmap * bitmap = (Bitmap *)source;
 218         SDL_Texture * texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ABGR8888,
 219 //              SDL_TEXTUREACCESS_STATIC, bitmap->width, bitmap->height);
 220                 SDL_TEXTUREACCESS_TARGET, bitmap->width, bitmap->height);
 221         SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
 222         SDL_UpdateTexture(texture, NULL, (Uint32 *)bitmap->pixelData,
 223                 bitmap->width * sizeof(Uint32));
 224
 225         return texture;
 226 }
 227
 228
 229 void GUI::MouseDown(int32_t x, int32_t y, uint32_t buttons)
 230 {
 231         DiskSelector::MouseDown(x, y, buttons);
 232         Config::MouseDown(x, y, buttons);
 233
 234         if (sidebarState != SBS_SHOWN)
 235                 return;
 236
 237         switch (iconSelected)
 238         {
 239         // Power
 240         case 0:
 241                 powerOnState = !powerOnState;
 242                 SetPowerState();
 243
 244                 if (!powerOnState)
 245                         SpawnMessage("*** POWER OFF ***");
 246
 247                 break;
 248         // Disk #1
 249         case 1:
 250                 SpawnMessage("*** DISK #1 ***");
 251
 252 #if 0
 253                 if (disk1EjectHovered && !floppyDrive[0].IsEmpty(0))
 254                 {
 255                         floppyDrive[0].EjectImage(0);
 256                         SpawnMessage("*** DISK #1 EJECTED ***");
 257                 }
 258
 259                 if (!disk1EjectHovered && !disk1NewDiskHovered)
 260                 {
 261                         // Load the disk selector
 262                         Config::HideWindow();
 263                         DiskSelector::ShowWindow(0);
 264                 }
 265 #else
 266                 if (disk1EjectHovered)
 267                 {
 268                         if (!floppyDrive[0].IsEmpty(0))
 269                         {
 270                                 floppyDrive[0].EjectImage(0);
 271                                 SpawnMessage("*** DISK #1 EJECTED ***");
 272                         }
 273                 }
 274                 else
 275                 {
 276                         if (disk1NewDiskHovered)
 277                         {
 278                                 if (!floppyDrive[0].IsEmpty(0))
 279                                         floppyDrive[0].EjectImage(0);
 280
 281                                 floppyDrive[0].CreateBlankImage(0);
 282                         }
 283                         else
 284                         {
 285                                 // Load the disk selector
 286                                 Config::HideWindow();
 287                                 DiskSelector::ShowWindow(0);
 288                         }
 289                 }
 290 #endif
 291
 292                 break;
 293         // Disk #2
 294         case 2:
 295                 SpawnMessage("*** DISK #2 ***");
 296
 297                 if (disk2EjectHovered && !floppyDrive[0].IsEmpty(1))
 298                 {
 299                         floppyDrive[0].EjectImage(1);
 300                         SpawnMessage("*** DISK #2 EJECTED ***");
 301                 }
 302
 303                 if (!disk2EjectHovered && !disk2NewDiskHovered)
 304                 {
 305                         // Load the disk selector
 306                         Config::HideWindow();
 307                         DiskSelector::ShowWindow(1);
 308                 }
 309
 310                 break;
 311         // Swap disks
 312         case 3:
 313                 floppyDrive[0].SwapImages();
 314                 SpawnMessage("*** DISKS SWAPPED ***");
 315                 break;
 316         // Save state
 317         case 4:
 318                 SpawnMessage("*** SAVE STATE ***");
 319                 break;
 320         // Load state
 321         case 5:
 322                 SpawnMessage("*** LOAD STATE ***");
 323                 break;
 324         // Configuration
 325         case 6:
 326                 SpawnMessage("*** CONFIGURATION ***");
 327                 // Load the configuration window
 328                 DiskSelector::HideWindow();
 329                 Config::ShowWindow();
 330                 break;
 331         }
 332 }
 333
 334
 335 void GUI::MouseUp(int32_t x, int32_t y, uint32_t buttons)
 336 {
 337         DiskSelector::MouseUp(x, y, buttons);
 338         Config::MouseUp(x, y, buttons);
 339 }
 340
 341
 342 void GUI::MouseMove(int32_t x, int32_t y, uint32_t buttons)
 343 {
 344         DiskSelector::MouseMove(x, y, buttons);
 345         Config::MouseMove(x, y, buttons);
 346
 347         if (sidebarState != SBS_SHOWN)
 348         {
 349                 iconSelected = -1;
 350
 351                 if (x > SIDEBAR_X_POS)
 352                 {
 353 //printf("GUI: sidebar showing (x = %i)...\n", x);
 354                         sidebarState = SBS_SHOWING;
 355                         dx = -8;
 356                 }
 357                 else
 358                 {
 359 //printf("GUI: sidebar hiding[1] (x = %i)...\n", x);
 360                         sidebarState = SBS_HIDING;
 361                         dx = 8;
 362                 }
 363         }
 364         else
 365         {
 366                 if (x < SIDEBAR_X_POS)
 367                 {
 368                         iconSelected = lastIconSelected = -1;
 369                         HandleIconSelection(sdlRenderer);
 370 //printf("GUI: sidebar hiding[2] (x = %i)...\n", x);
 371                         sidebarState = SBS_HIDING;
 372                         dx = 8;
 373                 }
 374                 // We're in the right zone, and the sidebar is shown, so let's select
 375                 // something!
 376                 else
 377                 {
 378                         if (y < 4 || y > 383)
 379                         {
 380                                 iconSelected = -1;
 381                         }
 382                         else
 383                                 iconSelected = (y - 4) / 54;
 384
 385                         // It's y+2 because the sidebar sits at (SIDEBAR_X_POS, 2)
 386                         disk1EjectHovered = ((x >= (SIDEBAR_X_POS + 24 + 29))
 387                                 && (x < (SIDEBAR_X_POS + 24 + 29 + 8))
 388                                 && (y >= (63 + 31 + 2))
 389                                 && (y < (63 + 31 + 2 + 7)) ? true : false);
 390
 391                         disk2EjectHovered = ((x >= (SIDEBAR_X_POS + 24 + 29))
 392                                 && (x < (SIDEBAR_X_POS + 24 + 29 + 8))
 393                                 && (y >= (117 + 31 + 2))
 394                                 && (y < (117 + 31 + 2 + 7)) ? true : false);
 395
 396                         disk1NewDiskHovered = ((x >= (SIDEBAR_X_POS + 24 + 6))
 397                                 && (x < (SIDEBAR_X_POS + 24 + 6 + 30))
 398                                 && (y >= (63 + 31 + 2))
 399                                 && (y < (63 + 31 + 2 + 6)) ? true : false);
 400
 401                         disk2NewDiskHovered = ((x >= (SIDEBAR_X_POS + 24 + 6))
 402                                 && (x < (SIDEBAR_X_POS + 24 + 6 + 30))
 403                                 && (y >= (117 + 31 + 2))
 404                                 && (y < (117 + 31 + 2 + 6)) ? true : false);
 405
 406                         if (iconSelected != lastIconSelected)
 407                         {
 408                                 HandleIconSelection(sdlRenderer);
 409                                 lastIconSelected = iconSelected;
 410
 411                                 if ((iconSelected >= 0) && (iconSelected <= 6))
 412                                         SpawnMessage("%s", iconHelp[iconSelected]);
 413
 414                                 // Show what's in the selected drive
 415                                 if (iconSelected >= 1 && iconSelected <= 2)
 416                                 {
 417                                         if (!floppyDrive[0].IsEmpty(iconSelected - 1))
 418                                                 SpawnMessage("\"%s\"", floppyDrive[0].ImageName(iconSelected - 1));
 419                                 }
 420                         }
 421                 }
 422         }
 423 }
 424
 425
 426 bool GUI::KeyDown(uint32_t key)
 427 {
 428         return Config::KeyDown(key);
 429 }
 430
 431
 432 void GUI::HandleIconSelection(SDL_Renderer * renderer)
 433 {
 434         // Set up drive icons in their current states
 435         AssembleDriveIcon(renderer, 0);
 436         AssembleDriveIcon(renderer, 1);
 437
 438         // Reload the background...
 439         SDL_UpdateTexture(overlay, NULL, texturePointer, 128 * sizeof(Uint32));
 440
 441         if (SDL_SetRenderTarget(renderer, overlay) < 0)
 442         {
 443                 WriteLog("GUI: Could not set Render Target to overlay... (%s)\n", SDL_GetError());
 444                 return;
 445         }
 446
 447         // Draw the icon selector, if an icon is selected
 448         if (iconSelected >= 0)
 449         {
 450                 SDL_Rect dst;// = { 54, 54, 24 - 7, 2 };
 451                 dst.w = dst.h = 54, dst.x = 24 - 7, dst.y = 2 + (iconSelected * 54);
 452                 SDL_RenderCopy(renderer, iconSelection, NULL, &dst);
 453         }
 454
 455         DrawSidebarIcons(renderer);
 456
 457         // Set render target back to default
 458         SDL_SetRenderTarget(renderer, NULL);
 459 }
 460
 461
 462 void GUI::AssembleDriveIcon(SDL_Renderer * renderer, int driveNumber)
 463 {
 464         SDL_Texture * drive[2] = { disk1Icon, disk2Icon };
 465         const char * number[2] = { numeralOne, numeralTwo };
 466
 467         if (SDL_SetRenderTarget(renderer, drive[driveNumber]) < 0)
 468         {
 469                 WriteLog("GUI: Could not set Render Target to overlay... (%s)\n", SDL_GetError());
 470                 return;
 471         }
 472
 473         SDL_RenderClear(renderer);
 474         SDL_RenderCopy(renderer, diskIcon, NULL, NULL);
 475
 476         // Drive door @ (16, 7)
 477         SDL_Rect dst;
 478         dst.w = 8, dst.h = 10, dst.x = 16, dst.y = 7;
 479         SDL_RenderCopy(renderer, (floppyDrive[0].IsEmpty(driveNumber) ?
 480                 doorOpen : doorClosed), NULL, &dst);
 481
 482         // Numeral @ (30, 20)
 483         DrawCharArray(renderer, number[driveNumber], 30, 20, 7, 7, 0xD0, 0xE0, 0xF0);
 484         DrawDriveLight(renderer, driveNumber);
 485         DrawEjectButton(renderer, driveNumber);
 486         DrawNewDiskButton(renderer, driveNumber);
 487
 488         // Set render target back to default
 489         SDL_SetRenderTarget(renderer, NULL);
 490 }
 491
 492
 493 void GUI::DrawEjectButton(SDL_Renderer * renderer, int driveNumber)
 494 {
 495         if (floppyDrive[0].IsEmpty(driveNumber))
 496                 return;
 497
 498         uint8_t r = 0x00, g = 0xAA, b = 0x00;
 499
 500         if ((driveNumber == 0 && disk1EjectHovered)
 501                 || (driveNumber == 1 && disk2EjectHovered))
 502                 r = 0x20, g = 0xFF, b = 0x20;
 503
 504         DrawCharArray(renderer, ejectIcon, 29, 31, 8, 7, r, g, b);
 505 }
 506
 507
 508 void GUI::DrawNewDiskButton(SDL_Renderer * renderer, int driveNumber)
 509 {
 510         if (!floppyDrive[0].IsEmpty(driveNumber))
 511                 return;
 512
 513         uint8_t r = 0x00, g = 0xAA, b = 0x00;
 514
 515         if ((driveNumber == 0 && disk1NewDiskHovered)
 516                 || (driveNumber == 1 && disk2NewDiskHovered))
 517                 r = 0x20, g = 0xFF, b = 0x20;
 518
 519         DrawCharArray(renderer, newDiskIcon, 6, 31, 30, 6, r, g, b);
 520 }
 521
 522
 523 void GUI::DrawDriveLight(SDL_Renderer * renderer, int driveNumber)
 524 {
 525         int lightState = floppyDrive[0].DriveLightStatus(driveNumber);
 526         int r = 0x77, g = 0x00, b = 0x00;
 527
 528         if (lightState == DLS_READ)
 529                 r = 0x20, g = 0xFF, b = 0x20;
 530         else if (lightState == DLS_WRITE)
 531                 r = 0xFF, g = 0x30, b = 0x30;
 532
 533         // Drive light @ (8, 21)
 534         DrawCharArray(renderer, driveLight, 8, 21, 5, 5, r, g, b);
 535 }
 536
 537
 538 void GUI::DrawCharArray(SDL_Renderer * renderer, const char * array, int x,
 539         int y, int w, int h, int r, int g, int b)
 540 {
 541         SDL_SetRenderDrawColor(renderer, r, g, b, 0xFF);
 542
 543         for(int j=0; j<h; j++)
 544         {
 545                 for(int i=0; i<w; i++)
 546                 {
 547                         if (array[(j * w) + i] != ' ')
 548                                 SDL_RenderDrawPoint(renderer, x + i, y + j);
 549                 }
 550         }
 551
 552         SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x00);
 553 }
 554
 555
 556 void GUI::DrawCharacter(SDL_Renderer * renderer, int x, int y, uint8_t c, bool invert/*= false*/)
 557 {
 558         uint32_t inv = (invert ? 0x000000FF : 0x00000000);
 559         uint32_t pixel = 0xFFFFC000;    // RRGGBBAA
 560         uint8_t * ptr = (uint8_t *)&font10pt[(c - 0x20) * FONT_WIDTH * FONT_HEIGHT];
 561         SDL_Rect dst;
 562         dst.x = x * FONT_WIDTH, dst.y = y * FONT_HEIGHT, dst.w = FONT_WIDTH, dst.h = FONT_HEIGHT;
 563
 564         for(int i=0; i<FONT_WIDTH*FONT_HEIGHT; i++)
 565                 stamp[i] = (pixel | ptr[i]) ^ inv;
 566
 567         SDL_UpdateTexture(charStamp, NULL, stamp, FONT_WIDTH * sizeof(Uint32));
 568         SDL_RenderCopy(renderer, charStamp, NULL, &dst);
 569 }
 570
 571
 572 //
 573 // N.B.: This draws a char at an abosulte X/Y position, not on a grid
 574 //
 575 void GUI::DrawCharacterVert(SDL_Renderer * renderer, int x, int y, uint8_t c, bool invert/*= false*/)
 576 {
 577         uint32_t inv = (invert ? 0x000000FF : 0x00000000);
 578         uint32_t pixel = 0xFFFFC000;    // RRGGBBAA
 579         uint8_t * ptr = (uint8_t *)&font10pt[(c - 0x20) * FONT_WIDTH * FONT_HEIGHT];
 580         SDL_Rect dst;
 581         dst.x = x, dst.y = y, dst.w = FONT_WIDTH, dst.h = FONT_HEIGHT;
 582         SDL_Point pt = { FONT_WIDTH - 1, FONT_HEIGHT - 1 };
 583
 584         for(int i=0; i<FONT_WIDTH*FONT_HEIGHT; i++)
 585                 stamp[i] = (pixel | ptr[i]) ^ inv;
 586
 587         SDL_SetTextureBlendMode(charStamp, SDL_BLENDMODE_NONE);
 588         SDL_UpdateTexture(charStamp, NULL, stamp, FONT_WIDTH * sizeof(Uint32));
 589         SDL_RenderCopyEx(renderer, charStamp, NULL, &dst, 270.0, &pt, SDL_FLIP_NONE);
 590         SDL_SetTextureBlendMode(charStamp, SDL_BLENDMODE_BLEND);
 591 }
 592
 593
 594 void GUI::DrawString(SDL_Renderer * renderer, int x, int y, const char * s, bool invert/*= false*/)
 595 {
 596         int len = strlen(s);
 597
 598         for(int i=0; i<len; i++)
 599                 DrawCharacter(renderer, x + i, y, s[i], invert);
 600 }
 601
 602
 603 //
 604 // N.B.: This draws a char at an absolute X/Y position, not on a grid
 605 //
 606 void GUI::DrawStringVert(SDL_Renderer * renderer, int x, int y, const char * s, bool invert/*= false*/)
 607 {
 608         int len = strlen(s);
 609
 610         for(int i=0; i<len; i++)
 611                 DrawCharacterVert(renderer, x, y - (FONT_WIDTH * i), s[i], invert);
 612 }
 613
 614
 615 void GUI::DrawBox(SDL_Renderer * renderer, int x, int y, int w, int h, int r/*= 0x00*/, int g/*= 0xAA*/, int b/*= 0x00*/)
 616 {
 617         SDL_SetRenderDrawColor(renderer, r, g, b, 0xFF);
 618
 619         for(int i=0; i<w; i++)
 620         {
 621                 SDL_RenderDrawPoint(renderer, x + i, y);
 622                 SDL_RenderDrawPoint(renderer, x + i, y + h - 1);
 623         }
 624
 625         for(int i=0; i<h; i++)
 626         {
 627                 SDL_RenderDrawPoint(renderer, x, y + i);
 628                 SDL_RenderDrawPoint(renderer, x + w - 1, y + i);
 629         }
 630
 631         SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x00);
 632 }
 633
 634
 635 void GUI::HandleGUIState(void)
 636 {
 637         olDst.x += dx;
 638
 639         if (olDst.x < SIDEBAR_X_POS && sidebarState == SBS_SHOWING)
 640         {
 641                 olDst.x = SIDEBAR_X_POS;
 642                 sidebarState = SBS_SHOWN;
 643                 dx = 0;
 644         }
 645         else if (olDst.x > VIRTUAL_SCREEN_WIDTH && sidebarState == SBS_HIDING)
 646         {
 647                 olDst.x = VIRTUAL_SCREEN_WIDTH;
 648                 sidebarState = SBS_HIDDEN;
 649                 dx = 0;
 650         }
 651 }
 652
 653
 654 void GUI::DrawSidebarIcons(SDL_Renderer * renderer)
 655 {
 656         SDL_Texture * icons[7] = { powerOnIcon, disk1Icon, disk2Icon, diskSwapIcon,
 657                 stateSaveIcon, stateLoadIcon, configIcon };
 658
 659         icons[0] = (powerOnState ? powerOnIcon : powerOffIcon);
 660         SDL_Rect dst = { 24, 2 + 7, 40, 40 };
 661
 662         for(int i=0; i<7; i++)
 663         {
 664                 SDL_RenderCopy(renderer, icons[i], NULL, &dst);
 665                 dst.y += 54;
 666         }
 667 }
 668
 669
 670 void GUI::Render(SDL_Renderer * renderer)
 671 {
 672         // Sanity check
 673         if (!overlay)
 674                 return;
 675
 676         HandleGUIState();
 677
 678         if (sidebarState != SBS_HIDDEN)
 679                 HandleIconSelection(renderer);
 680
 681         SDL_RenderCopy(renderer, overlay, NULL, &olDst);
 682
 683         // Hmm.
 684         DiskSelector::Render(renderer);
 685         Config::Render(renderer);
 686 }
 687
 688
 689 /*
 690 GUI Considerations:
 691
 692 screen is 560 x 384
 693
 694 cut into 7 pieces give ~54 pix per piece
 695 So, let's try 40x40 icons, and see if that's good enough...
 696 Selection is 54x54.
 697
 698 drive proportions: 1.62 : 1
 699
 700 Icon order:
 701
 702 +-----+
 703 |     |
 704 |Power|
 705 |     |
 706 +-----+
 707
 708 +-----+
 709 |     |
 710 |Disk1|
 711 |    ^| <-- eject button
 712 +-----+
 713
 714 +-----+
 715 |     |
 716 |Disk2|
 717 |    ^|
 718 +-----+
 719
 720 +-----+
 721 |     |
 722 |Swap |
 723 |     |
 724 +-----+
 725
 726 +-----+
 727 |     |
 728 |Confg|
 729 |     |
 730 +-----+
 731
 732 maybe state save/load
 733
 734 */
 735