* Merged trunk commits [664], [665], [666], [667], [669], [670], [671], [672] and [684], by patrick and henry: + Added FTLayout.h, FTSimpleLayout.h and FTSimpleLayout.cpp to implement a framework for layout managers and an implementation of a simple layout manager. + Updated FTGLDemo to use the new FTSimpleLayout. Changes include: - Added a font origin to specify the location to render the font. - The default text is now blatantly plagarized from the back cover of the OGL red book. - The font size is much smaller. - Font metrics are rendered differently depending on the current layout manager. - The FTSimpleLayout alignment mode is now output with other font information. - The space bar no longer cycles through the fonts. The cursor up/down keys do. - The cursor left/right keys increment/decrement the size of the current font. - The page up/page down keys cycle through the layout managers. - The home/end keys increment and decrement the line length of a simple layout - The tab key cycles through the alignment modes of a simple layout. + Fixed a bug where the trackball rotation was applied after translation. + Minor reformatting and enabled texture fonts to be selected + Un-inlined private methods...because they are called by other private inlined methods + Minor formatting changes + Adding FTLayout
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
diff --git a/demo/FTGLDemo.cpp b/demo/FTGLDemo.cpp
index 272d113..db2569a 100644
--- a/demo/FTGLDemo.cpp
+++ b/demo/FTGLDemo.cpp
@@ -2,6 +2,7 @@
#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
#ifdef __APPLE_CC__
#include <GLUT/glut.h>
@@ -17,6 +18,7 @@
#include "FTGLTextureFont.h"
#include "FTGLPixmapFont.h"
#include "FTGLBitmapFont.h"
+#include "FTSimpleLayout.h"
// YOU'LL PROBABLY WANT TO CHANGE THESE
#ifdef __linux__
@@ -49,8 +51,18 @@ GLint w_win = 640, h_win = 480;
int mode = INTERACTIVE;
int carat = 0;
+FTSimpleLayout simpleLayout;
+FTLayout *layouts[] = { &simpleLayout, NULL};
+int currentLayout = 0;
+const int NumLayouts = 2;
+
+const float InitialLineLength = 300.0f;
+
+const float OX = -100;
+const float OY = 200;
+
//wchar_t myString[16] = { 0x6FB3, 0x9580};
-wchar_t myString[16];
+char myString[4096];
static FTFont* fonts[6];
static FTGLPixmapFont* infoFont;
@@ -123,7 +135,7 @@ void setUpFonts( const char* fontfile)
exit(1);
}
- if( !fonts[x]->FaceSize( 144))
+ if( !fonts[x]->FaceSize( 24))
{
fprintf( stderr, "Failed to set size");
exit(1);
@@ -144,19 +156,27 @@ void setUpFonts( const char* fontfile)
infoFont->FaceSize( 18);
- myString[0] = 65;
- myString[1] = 0;
+ strcpy(myString, "OpenGL is a powerful software interface for "
+ "graphics hardware that allows graphics programmers to produce "
+ "high-quality color images of 3D objects. abcdefghijklmnopqrstu"
+ "vwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");
}
void renderFontmetrics()
{
- float x1, y1, z1, x2, y2, z2;
- fonts[current_font]->BBox( myString, x1, y1, z1, x2, y2, z2);
-
- // Draw the bounding box
- glDisable( GL_LIGHTING);
- glDisable( GL_TEXTURE_2D);
+ float x1, y1, z1, x2, y2, z2;
+
+ // If there is a layout use it to compute the bbox, otherwise query as
+ // a string.
+ if(layouts[currentLayout])
+ layouts[currentLayout]->BBox(myString, x1, y1, z1, x2, y2, z2);
+ else
+ fonts[current_font]->BBox(myString, x1, y1, z1, x2, y2, z2);
+
+ // Draw the bounding box
+ glDisable( GL_LIGHTING);
+ glDisable( GL_TEXTURE_2D);
glEnable( GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc( GL_SRC_ALPHA, GL_ONE); // GL_ONE_MINUS_SRC_ALPHA
@@ -193,14 +213,27 @@ void renderFontmetrics()
glVertex3f( x2, y1, z2);
glEnd();
}
-
- // Draw the baseline, Ascender and Descender
- glBegin( GL_LINES);
- glColor3f( 0.0, 0.0, 1.0);
- glVertex3f( 0.0, 0.0, 0.0);
- glVertex3f( fonts[current_font]->Advance( myString), 0.0, 0.0);
- glVertex3f( 0.0, fonts[current_font]->Ascender(), 0.0);
- glVertex3f( 0.0, fonts[current_font]->Descender(), 0.0);
+
+ if (!layouts[currentLayout]) {
+ /* There is no layout. Draw the baseline, Ascender and Descender */
+ glBegin( GL_LINES);
+ glColor3f( 0.0, 0.0, 1.0);
+ glVertex3f( 0.0, 0.0, 0.0);
+ glVertex3f( fonts[current_font]->Advance( myString), 0.0, 0.0);
+ glVertex3f( 0.0, fonts[current_font]->Ascender(), 0.0);
+ glVertex3f( 0.0, fonts[current_font]->Descender(), 0.0);
+ } else if (layouts[currentLayout] && (dynamic_cast <FTSimpleLayout *>(layouts[currentLayout]))) {
+ float lineWidth = ((FTSimpleLayout *)layouts[currentLayout])->GetLineLength();
+
+ /* The layout is a simple layout. Render guides that mark the edges of the wrap region */
+ glColor3f(0.5,1.0,1.0);
+ glBegin( GL_LINES);
+ glVertex3f( 0, 10000, 0);
+ glVertex3f( 0,-10000, 0);
+ glVertex3f( lineWidth, 10000, 0);
+ glVertex3f( lineWidth,-10000, 0);
+ glEnd();
+ } /* Render layout specific metrics (if/elseif layouts[currentLayout]) */
glEnd();
@@ -260,6 +293,16 @@ void renderFontInfo()
glRasterPos2f( 20.0f , 20.0f + infoFont->LineHeight());
infoFont->Render(fontfile);
+
+ if (layouts[currentLayout] && (dynamic_cast <FTSimpleLayout *>(layouts[currentLayout]))) {
+ glRasterPos2f( 20.0f , 20.0f + 2*(infoFont->Ascender() - infoFont->Descender()));
+ switch (((FTSimpleLayout *)layouts[currentLayout])->GetAlignment()) {
+ case FTSimpleLayout::ALIGN_LEFT: infoFont->Render("Align Left"); break;
+ case FTSimpleLayout::ALIGN_RIGHT: infoFont->Render("Align Right"); break;
+ case FTSimpleLayout::ALIGN_CENTER: infoFont->Render("Align Center"); break;
+ case FTSimpleLayout::ALIGN_JUST: infoFont->Render("Align Justified"); break;
+ } /* Output the alignment mode of the layout (switch GetAlignment()) */
+ } /* If the current layout is a simple layout output the alignemnt mode (if layouts[currentLayout]) */
}
@@ -293,18 +336,21 @@ void do_display (void)
}
- glColor3f( 1.0, 1.0, 1.0);
-// If you do want to switch the color of bitmaps rendered with glBitmap,
-// you will need to explicitly call glRasterPos3f (or its ilk) to lock
-// in a changed current color.
+ glColor3f( 1.0, 1.0, 1.0);
+ // If you do want to switch the color of bitmaps rendered with glBitmap,
+ // you will need to explicitly call glRasterPos (or its ilk) to lock
+ // in a changed current color.
- glPushMatrix();
- fonts[current_font]->Render( myString);
- glPopMatrix();
+ glPushMatrix();
+ if(layouts[currentLayout])
+ layouts[currentLayout]->Render(myString);
+ else
+ fonts[current_font]->Render( myString);
+ glPopMatrix();
- glPushMatrix();
+ glPushMatrix();
renderFontmetrics();
- glPopMatrix();
+ glPopMatrix();
renderFontInfo();
}
@@ -320,13 +366,14 @@ void display(void)
{
case FTGL_BITMAP:
case FTGL_PIXMAP:
- glRasterPos2i( w_win / 2, h_win / 2);
- glTranslatef( w_win / 2, h_win / 2, 0.0);
+ glRasterPos2i((long)( w_win / 2 + OX),(long)( h_win / 2 + OY));
+ glTranslatef(w_win / 2 + OX,h_win / 2 + OY, 0.0);
break;
case FTGL_OUTLINE:
case FTGL_POLYGON:
case FTGL_EXTRUDE:
case FTGL_TEXTURE:
+ glTranslatef(OX,OY,0);
tbMatrix();
break;
}
@@ -363,7 +410,11 @@ void myinit( const char* fontfile)
tbAnimate( GL_FALSE);
setUpFonts( fontfile);
-
+
+ // Configure the simple layout
+ simpleLayout.SetLineLength(InitialLineLength);
+ simpleLayout.SetFont(fonts[current_font]);
+
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -392,11 +443,17 @@ void parsekey(unsigned char key, int x, int y)
carat = 0;
}
break;
- case ' ':
- current_font++;
- if(current_font > 5)
- current_font = 0;
- break;
+ case '\t':
+ if (layouts[currentLayout] && (dynamic_cast <FTSimpleLayout *>(layouts[currentLayout]))) {
+ FTSimpleLayout *simpleLayout = (FTSimpleLayout *)layouts[currentLayout];
+ switch (simpleLayout->GetAlignment()) {
+ case FTSimpleLayout::ALIGN_LEFT: simpleLayout->SetAlignment(FTSimpleLayout::ALIGN_RIGHT); break;
+ case FTSimpleLayout::ALIGN_RIGHT: simpleLayout->SetAlignment(FTSimpleLayout::ALIGN_CENTER); break;
+ case FTSimpleLayout::ALIGN_CENTER: simpleLayout->SetAlignment(FTSimpleLayout::ALIGN_JUST); break;
+ case FTSimpleLayout::ALIGN_JUST: simpleLayout->SetAlignment(FTSimpleLayout::ALIGN_LEFT); break;
+ } /* Decrement the layout (switch GetAlignemnt()) */
+ } /* If the current layout is a simple layout change it's alignment properties (if simpleLayout) */
+ break;
default:
if( mode == INTERACTIVE)
{
@@ -408,7 +465,7 @@ void parsekey(unsigned char key, int x, int y)
{
myString[carat] = key;
myString[carat + 1] = 0;
- carat = carat > 14 ? 14 : carat + 1;
+ carat = carat > 2000 ? 2000 : carat + 1;
}
}
@@ -417,27 +474,78 @@ void parsekey(unsigned char key, int x, int y)
}
+void parseSpecialKey(int key, int x, int y)
+{
+ FTSimpleLayout *simpleLayout = NULL;
+
+ // If the currentLayout is a simple layout store a pointer in simpleLayout
+ if(layouts[currentLayout]
+ && (dynamic_cast <FTSimpleLayout *>(layouts[currentLayout])))
+ {
+ simpleLayout = (FTSimpleLayout *)layouts[currentLayout];
+ }
+
+ switch (key)
+ {
+ case GLUT_KEY_UP:
+ current_font = (current_font + 1)%5;
+ break;
+ case GLUT_KEY_DOWN:
+ current_font = (current_font + 4)%5;
+ break;
+ case GLUT_KEY_PAGE_UP:
+ currentLayout = (currentLayout + 1)%NumLayouts;
+ break;
+ case GLUT_KEY_PAGE_DOWN:
+ currentLayout = (currentLayout + NumLayouts - 1)%NumLayouts;
+ break;
+ case GLUT_KEY_HOME:
+ /* If the current layout is simple decrement its line length */
+ if (simpleLayout) simpleLayout->SetLineLength(simpleLayout->GetLineLength() - 10.0f);
+ break;
+ case GLUT_KEY_END:
+ /* If the current layout is simple increment its line length */
+ if (simpleLayout) simpleLayout->SetLineLength(simpleLayout->GetLineLength() + 10.0f);
+ break;
+ case GLUT_KEY_LEFT:
+ fonts[current_font]->FaceSize(fonts[current_font]->FaceSize() - 1);
+ break;
+ case GLUT_KEY_RIGHT:
+ fonts[current_font]->FaceSize(fonts[current_font]->FaceSize() + 1);
+ break;
+ }
+
+ // If the current layout is a simple layout, update its font.
+ if(simpleLayout)
+ {
+ simpleLayout->SetFont(fonts[current_font]);
+ }
+
+ glutPostRedisplay();
+}
+
+
void motion(int x, int y)
{
- tbMotion( x, y);
+ tbMotion( x, y);
}
void mouse(int button, int state, int x, int y)
{
- tbMouse( button, state, x, y);
+ tbMouse( button, state, x, y);
}
void myReshape(int w, int h)
{
- glMatrixMode (GL_MODELVIEW);
- glViewport (0, 0, w, h);
- glLoadIdentity();
-
- w_win = w;
- h_win = h;
- SetCamera();
-
- tbReshape(w_win, h_win);
+ glMatrixMode (GL_MODELVIEW);
+ glViewport (0, 0, w, h);
+ glLoadIdentity();
+
+ w_win = w;
+ h_win = h;
+ SetCamera();
+
+ tbReshape(w_win, h_win);
}
void SetCamera(void)
@@ -487,6 +595,7 @@ int main(int argc, char *argv[])
glutCreateWindow("FTGL TEST");
glutDisplayFunc(display);
glutKeyboardFunc(parsekey);
+ glutSpecialFunc(parseSpecialKey);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutReshapeFunc(myReshape);
diff --git a/include/FTFont.h b/include/FTFont.h
index f99d1dd..2c0ff8c 100644
--- a/include/FTFont.h
+++ b/include/FTFont.h
@@ -338,8 +338,8 @@ class FTGL_EXPORT FTFont
* will be incremented by the kerning advance of
* char and nextChr.
*/
- inline void DoRender(const unsigned int chr,
- const unsigned int nextChr, FTPoint &origin);
+ void DoRender(const unsigned int chr,
+ const unsigned int nextChr, FTPoint &origin);
/**
* Check that the glyph at <code>chr</code> exist. If not load it.
@@ -347,7 +347,7 @@ class FTGL_EXPORT FTFont
* @param chr character index
* @return <code>true</code> if the glyph can be created.
*/
- inline bool CheckGlyph( const unsigned int chr);
+ bool CheckGlyph( const unsigned int chr);
/**
* An object that holds a list of glyphs
diff --git a/include/FTLayout.h b/include/FTLayout.h
new file mode 100644
index 0000000..43f0410
--- /dev/null
+++ b/include/FTLayout.h
@@ -0,0 +1,107 @@
+#ifndef __FTLayout__
+#define __FTLayout__
+
+#include "FTGL.h"
+#include "FTPoint.h"
+#include "FTFont.h"
+
+/**
+ * FTLayout is the interface for layout managers that render text.
+ *
+ * Specific layout manager classes are derived from this class. This class
+ * is abstract and deriving classes must implement the protected
+ * <code>Render</code> methods to render formatted text and
+ * <code>BBox</code> methods to determine the bounding box of output text.
+ *
+ * @see FTFont
+ */
+class FTGL_EXPORT FTLayout {
+ public:
+ /**
+ * Get the bounding box for a formatted string.
+ *
+ * @param string a char string
+ * @param llx lower left near x coord
+ * @param lly lower left near y coord
+ * @param llz lower left near z coord
+ * @param urx upper right far x coord
+ * @param ury upper right far y coord
+ * @param urz upper right far z coord
+ */
+ virtual void BBox(const char* String,float& llx,float& lly,float& llz,float& urx,float& ury,float& urz) = 0;
+
+ /**
+ * Get the bounding box for a formatted string.
+ *
+ * @param string a wchar_t string
+ * @param llx lower left near x coord
+ * @param lly lower left near y coord
+ * @param llz lower left near z coord
+ * @param urx upper right far x coord
+ * @param ury upper right far y coord
+ * @param urz upper right far z coord
+ */
+ virtual void BBox(const wchar_t* String,float& llx,float& lly,float& llz,float& urx,float& ury,float& urz) = 0;
+
+ /**
+ * Render a string of characters
+ *
+ * @param string 'C' style string to be output.
+ */
+ virtual void Render(const char *String) = 0;
+
+ /**
+ * Render a string of characters
+ *
+ * @param string wchar_t string to be output.
+ */
+ virtual void Render(const wchar_t *String) = 0;
+ protected:
+ /**
+ * Current pen or cursor position;
+ */
+ FTPoint pen;
+
+ /**
+ * Expose <code>FTFont::DoRender</code> method to derived classes.
+ *
+ * @param font The font that contains the glyph.
+ * @param chr current character
+ * @param nextChr next character
+ * @see FTFont::DoRender
+ */
+ void DoRender(FTFont *font,const unsigned int chr,const unsigned int nextChr)
+ { font->DoRender(chr,nextChr,pen); }
+
+ /**
+ * Expose <code>FTFont::CheckGlyph</code> method to derived classes.
+ *
+ * @param font The font that contains the glyph.
+ * @param chr character index
+ */
+ void CheckGlyph(FTFont *font,const unsigned int Chr)
+ { font->CheckGlyph(Chr); }
+
+ /**
+ * Expose the FTFont <code>glyphList</code> to our derived classes.
+ *
+ * @param font The font to perform the query on.
+ * @param Char The character corresponding to the glyph to query.
+ *
+ * @return A pointer to the glyphList of font.
+ */
+ FTGlyphContainer *GetGlyphs(FTFont *font)
+ { return(font->glyphList); }
+
+ /**
+ * Expose the FTFont <code>charSize</code> to our derived classes.
+ *
+ * @param The font to perform the query on.
+ *
+ * @return A reference to the charSize object of font.
+ */
+ FTSize &GetCharSize(FTFont *font)
+ { return(font->charSize); }
+}; /* class FTLayout */
+#endif /* __FTLayout__ */
+
diff --git a/include/FTSimpleLayout.h b/include/FTSimpleLayout.h
new file mode 100644
index 0000000..43aeaa4
--- /dev/null
+++ b/include/FTSimpleLayout.h
@@ -0,0 +1,262 @@
+#ifndef __FTSimpleLayout__
+#define __FTSimpleLayout__
+
+#include "FTLayout.h"
+#include "FTBBox.h"
+
+class FTFont;
+
+class FTGL_EXPORT FTSimpleLayout : public FTLayout {
+ public:
+ /**
+ * Initializes line spacing to 1.0, alignment to
+ * ALIGN_LEFT and wrap to 100.0
+ */
+ FTSimpleLayout();
+
+ /**
+ * Get the bounding box for a string.
+ *
+ * @param string a char string
+ * @param llx lower left near x coord
+ * @param lly lower left near y coord
+ * @param llz lower left near z coord
+ * @param urx upper right far x coord
+ * @param ury upper right far y coord
+ * @param urz upper right far z coord
+ */
+ virtual void BBox( const char* string, float& llx, float& lly, float& llz, float& urx, float& ury, float& urz);
+
+ /**
+ * Get the bounding box for a string.
+ *
+ * @param string a wchar_t string
+ * @param llx lower left near x coord
+ * @param lly lower left near y coord
+ * @param llz lower left near z coord
+ * @param urx upper right far x coord
+ * @param ury upper right far y coord
+ * @param urz upper right far z coord
+ */
+ virtual void BBox( const wchar_t* string, float& llx, float& lly, float& llz, float& urx, float& ury, float& urz);
+
+ /**
+ * Render a string of characters
+ *
+ * @param string 'C' style string to be output.
+ */
+ virtual void Render( const char* string );
+
+ /**
+ * Render a string of characters
+ *
+ * @param string wchar_t string to be output.
+ */
+ virtual void Render( const wchar_t* string );
+
+ /**
+ * Render a string of characters and distribute extra space amongst
+ * the whitespace regions of the string.
+ *
+ * @param String 'C' style string to output.
+ * @param ExtraSpace The amount of extra space to add to each run of
+ * whitespace.
+ */
+ void RenderSpace(const char *String,const float ExtraSpace = 0.0)
+ { pen.X(0); pen.Y(0); RenderSpace(String, 0, -1, ExtraSpace); }
+
+ /**
+ * Render a string of characters and distribute extra space amongst
+ * the whitespace regions of the string.
+ *
+ * @param String wchar_t string to output.
+ * @param ExtraSpace The amount of extra space to add to each run of
+ * whitespace.
+ */
+ void RenderSpace(const wchar_t *String,const float ExtraSpace = 0.0)
+ { pen.X(0); pen.Y(0); RenderSpace(String, 0, -1, ExtraSpace); }
+
+ typedef enum {ALIGN_LEFT,ALIGN_CENTER,ALIGN_RIGHT,ALIGN_JUST} TextAlignment;
+
+ /**
+ * Set he font to use for rendering the text.
+ *
+ * @param fontInit A pointer to the new font. The font is
+ * referenced by this but will not be
+ * disposed of when this is deleted.
+ */
+ void SetFont(FTFont *fontInit)
+ { currentFont = fontInit; }
+ /**
+ * @return The current font.
+ */
+ FTFont *GetFont()
+ { return(currentFont); }
+ /**
+ * The maximum line length for formatting text.
+ *
+ * @param LineLength The new line length.
+ */
+ void SetLineLength(const float LineLength)
+ { lineLength = LineLength; }
+
+ /**
+ * @return The current line length.
+ */
+ float GetLineLength() const
+ { return(lineLength); }
+
+ /**
+ * The text alignment mode used to distribute
+ * space within a line or rendered text.
+ *
+ * @param Alignment The new alignment mode.
+ */
+ void SetAlignment(const TextAlignment Alignment)
+ { alignment = Alignment; }
+ /**
+ * @return The text alignment mode.
+ */
+ TextAlignment GetAlignment() const
+ { return(alignment); }
+
+ /**
+ * Sets the line height.
+ *
+ * @param LineSpacing The height of each line of text expressed as
+ * a percentage of the current fonts line height.
+ */
+ void SetLineSpacing(const float LineSpacing)
+ { lineSpacing = LineSpacing; }
+
+ /**
+ * @return The line spacing.
+ */
+ float GetLineSpacing() const
+ { return(lineSpacing); }
+ protected:
+ /**
+ * Render a string of characters and distribute extra space amongst
+ * the whitespace regions of the string. Note that this method
+ * does not reset the pen position before rendering. This method
+ * provides the impelmentation for other RenderSpace methods and
+ * thus should be overloaded when attempting to overload any
+ * RenderSpace methods.
+ *
+ * @param String A buffer of wchar_t characters to output.
+ * @param Start The index of the first character in String to output.
+ * @param Stop The index of the last character in String to output.
+ * @param ExtraSpace The amount of extra space to distribute amongst
+ * the characters.
+ */
+ virtual void RenderSpace(const char *String,const int Start,const int Stop,const float ExtraSpace = 0.0);
+
+ /**
+ * Render a string of characters and distribute extra space amongst
+ * the whitespace regions of the string. Note that this method
+ * does not reset the pen position before rendering. This method
+ * provides the impelmentation for other RenderSpace methods and
+ * thus should be overloaded when attempting to overload any
+ * RenderSpace methods.
+ *
+ * @param String A buffer of wchar_t characters to output.
+ * @param Start The index of the first character in String to output.
+ * @param Stop The index of the last character in String to output.
+ * @param ExtraSpace The amount of extra space to distribute amongst
+ * the characters.
+ */
+ virtual void RenderSpace(const wchar_t *String,const int Start,const int Stop,const float ExtraSpace = 0.0);
+ private:
+ /**
+ * Either render a string of characters and wrap lines
+ * longer than a threshold or compute the bounds
+ * of a string of characters when wrapped. The functionality
+ * of this method is exposed by the BBoxWrapped and
+ * RenderWrapped methods.
+ *
+ * @param Buffer wchar_t style string to output.
+ * @param bounds A pointer to a bounds object. If non null
+ * the bounds of the text when laid out
+ * will be stored in bounds. If null the
+ * text will be rendered.
+ */
+ virtual void WrapText(const char *Buffer,FTBBox *bounds = NULL);
+
+ /**
+ * Either render a string of characters and wrap lines
+ * longer than a threshold or compute the bounds
+ * of a string of characters when wrapped. The functionality
+ * of this method is exposed by the BBoxWrapped and
+ * RenderWrapped methods.
+ *
+ * @param Buffer wchar_t style string to output.
+ * @param bounds A pointer to a bounds object. If non null
+ * the bounds of the text when laid out
+ * will be stored in bounds. If null the
+ * text will be rendered.
+ */
+ virtual void WrapText(const wchar_t *Buffer,FTBBox *bounds = NULL);
+
+ /**
+ * A helper method used by WrapText to either output the text or
+ * compute it's bounds.
+ *
+ * @param Buffer A pointer to an array of character data.
+ * @param StartIdx The index of the first character to process.
+ * @param EndIdx The index of the last character to process. If
+ * < 0 then characters will be parsed until a '\0'
+ * is encountered.
+ * @param RemainingWidth The amount of extra space left on the line.
+ * @param bounds A pointer to a bounds object. If non null the
+ * bounds will be initialized or expanded by the
+ * bounds of the line. If null the text will be
+ * rendered. If the bounds are invalid (lower > upper)
+ * they will be initialized. Otherwise they
+ * will be expanded.
+ */
+ void OutputWrapped(const char *Buffer,const int StartIdx,const int EndIdx,const float RemainingWidth,FTBBox *bounds);
+
+ /**
+ * A helper method used by WrapText to either output the text or
+ * compute it's bounds.
+ *
+ * @param Buffer A pointer to an array of character data.
+ * @param StartIdx The index of the first character to process.
+ * @param EndIdx The index of the last character to process. If
+ * < 0 then characters will be parsed until a '\0'
+ * is encountered.
+ * @param RemainingWidth The amount of extra space left on the line.
+ * @param bounds A pointer to a bounds object. If non null the
+ * bounds will be initialized or expanded by the
+ * bounds of the line. If null the text will be
+ * rendered. If the bounds are invalid (lower > upper)
+ * they will be initialized. Otherwise they
+ * will be expanded.
+ */
+ void OutputWrapped(const wchar_t *Buffer,const int StartIdx,const int EndIdx,const float RemainingWidth,FTBBox *bounds);
+
+ /**
+ * The font to use for rendering the text. The font is
+ * referenced by this but will not be disposed of when this
+ * is deleted.
+ */
+ FTFont *currentFont;
+ /**
+ * The maximum line length for formatting text.
+ */
+ float lineLength;
+
+ /**
+ * The text alignment mode used to distribute
+ * space within a line or rendered text.
+ */
+ TextAlignment alignment;
+
+ /**
+ * The height of each line of text expressed as
+ * a percentage of the fonts line height.
+ */
+ float lineSpacing;
+}; /* class FTSimpleLayout */
+#endif /* __FTSimpleLayout__ */
+
diff --git a/mac/FTGL.pbproj/project.pbxproj b/mac/FTGL.pbproj/project.pbxproj
index ac245fa..fd1cc64 100644
--- a/mac/FTGL.pbproj/project.pbxproj
+++ b/mac/FTGL.pbproj/project.pbxproj
@@ -158,6 +158,8 @@
F532B52D0394A92901608C9F,
BA79CB0303A176E7002F90D7,
BA3F38F603B1D529004F6ED7,
+ BA2329E00440D51B009E9A9E,
+ BA2329E20440D52C009E9A9E,
);
isa = PBXHeadersBuildPhase;
runOnlyForDeploymentPostprocessing = 0;
@@ -187,6 +189,7 @@
66BA08D201C4638C000ABFD4,
F532B52C0394A92901608C9F,
BA79CB0203A176E7002F90D7,
+ BA2329DE0440D502009E9A9E,
);
isa = PBXSourcesBuildPhase;
runOnlyForDeploymentPostprocessing = 0;
@@ -238,6 +241,7 @@
66BA08AE01C4638C000ABFD4,
66BA08AF01C4638C000ABFD4,
66BA08B001C4638C000ABFD4,
+ BA2329E10440D52C009E9A9E,
66BA08B101C4638C000ABFD4,
66BA08B201C4638C000ABFD4,
BA3F38F503B1D529004F6ED7,
@@ -249,6 +253,8 @@
F532B52B0394A92901608C9F,
66BA08B701C4638C000ABFD4,
66BA08B801C4638C000ABFD4,
+ BA2329DD0440D502009E9A9E,
+ BA2329DF0440D51B009E9A9E,
66BA08B901C4638C000ABFD4,
66BA08BA01C4638C000ABFD4,
66BA08BB01C4638C000ABFD4,
@@ -775,6 +781,7 @@
66BA08F101C4658D000ABFD4,
66BA08F201C4658D000ABFD4,
F5D2501F021F19CD019B29E7,
+ BAB31C69043B9C3500B0313F,
);
isa = PBXSourcesBuildPhase;
runOnlyForDeploymentPostprocessing = 0;
@@ -902,6 +909,45 @@
settings = {
};
};
+ BA2329DD0440D502009E9A9E = {
+ fileEncoding = 30;
+ isa = PBXFileReference;
+ name = FTSimpleLayout.cpp;
+ path = ../src/FTSimpleLayout.cpp;
+ refType = 2;
+ };
+ BA2329DE0440D502009E9A9E = {
+ fileRef = BA2329DD0440D502009E9A9E;
+ isa = PBXBuildFile;
+ settings = {
+ };
+ };
+ BA2329DF0440D51B009E9A9E = {
+ fileEncoding = 30;
+ isa = PBXFileReference;
+ name = FTSimpleLayout.h;
+ path = ../include/FTSimpleLayout.h;
+ refType = 2;
+ };
+ BA2329E00440D51B009E9A9E = {
+ fileRef = BA2329DF0440D51B009E9A9E;
+ isa = PBXBuildFile;
+ settings = {
+ };
+ };
+ BA2329E10440D52C009E9A9E = {
+ fileEncoding = 30;
+ isa = PBXFileReference;
+ name = FTLayout.h;
+ path = ../include/FTLayout.h;
+ refType = 2;
+ };
+ BA2329E20440D52C009E9A9E = {
+ fileRef = BA2329E10440D52C009E9A9E;
+ isa = PBXBuildFile;
+ settings = {
+ };
+ };
BA3F38F103B1D4FD004F6ED7 = {
fileEncoding = 30;
isa = PBXFileReference;
@@ -1006,6 +1052,18 @@
settings = {
};
};
+ BAB31C68043B8DEA00B0313F = {
+ fileRef = F580402702C549A2013DAE1F;
+ isa = PBXBuildFile;
+ settings = {
+ };
+ };
+ BAB31C69043B9C3500B0313F = {
+ fileRef = F580402702C549A2013DAE1F;
+ isa = PBXBuildFile;
+ settings = {
+ };
+ };
BADB7E0E03AF1241004F6ED7 = {
fileRef = 66BA088F01C4635F000ABFD4;
isa = PBXBuildFile;
@@ -1636,6 +1694,7 @@
buildActionMask = 2147483647;
files = (
F597CC8F02C5420F01F03BCF,
+ BAB31C68043B8DEA00B0313F,
);
isa = PBXSourcesBuildPhase;
runOnlyForDeploymentPostprocessing = 0;
diff --git a/src/FTFont.cpp b/src/FTFont.cpp
index 6f308cb..974d8c2 100644
--- a/src/FTFont.cpp
+++ b/src/FTFont.cpp
@@ -186,7 +186,8 @@ void FTFont::BBox(const char* string, const int start, const int end,
}
/* Expand totalBox by each glyph in String (for idx) */
- for(int i = start + 1; (end < 0 && string[i]) || end >= 0; i++)
+ for(int i = start + 1; (end < 0 && string[i])
+ || (end >= 0 && i < end); i++)
{
if(CheckGlyph(string[i]))
{
@@ -227,7 +228,8 @@ void FTFont::BBox(const wchar_t* string, const int start, const int end,
}
/* Expand totalBox by each glyph in String (for idx) */
- for(int i = start + 1; (end < 0 && string[i]) || end >= 0; i++)
+ for(int i = start + 1; (end < 0 && string[i])
+ || (end >= 0 && i < end); i++)
{
if(CheckGlyph(string[i]))
{
diff --git a/src/FTSimpleLayout.cpp b/src/FTSimpleLayout.cpp
new file mode 100644
index 0000000..37b4e79
--- /dev/null
+++ b/src/FTSimpleLayout.cpp
@@ -0,0 +1,347 @@
+#include <ctype.h>
+
+#include "FTFont.h"
+#include "FTGlyphContainer.h"
+#include "FTBBox.h"
+
+#include "FTSimpleLayout.h"
+
+
+FTSimpleLayout::FTSimpleLayout() {
+ currentFont = NULL;
+ lineLength = 100.0f;
+ alignment = ALIGN_LEFT;
+ lineSpacing = 1.0f;
+} /* FTSimpleLayout::FTSimpleLayout() */
+
+void FTSimpleLayout::BBox(const char *String,float& llx, float& lly, float& llz, float& urx, float& ury, float& urz) {
+ FTBBox bounds;
+
+ WrapText(String,&bounds);
+ llx = bounds.lowerX; lly = bounds.lowerY; llz = bounds.lowerZ;
+ urx = bounds.upperX; ury = bounds.upperY; urz = bounds.upperZ;
+} /* FTSimpleLayout::BBox() */
+
+void FTSimpleLayout::BBox(const wchar_t *String,float& llx, float& lly, float& llz, float& urx, float& ury, float& urz) {
+ FTBBox bounds;
+
+ WrapText(String,&bounds);
+ llx = bounds.lowerX; lly = bounds.lowerY; llz = bounds.lowerZ;
+ urx = bounds.upperX; ury = bounds.upperY; urz = bounds.upperZ;
+} /* FTSimpleLayout::BBox() */
+
+void FTSimpleLayout::Render(const char *String) {
+ pen.X(0.0f); pen.Y(0.0f);
+ WrapText(String,NULL);
+} /* FTSimpleLayout::Render() */
+
+void FTSimpleLayout::Render(const wchar_t* String) {
+ pen.X(0.0f); pen.Y(0.0f);
+ WrapText(String,NULL);
+} /* FTSimpleLayout::Render() */
+
+void FTSimpleLayout::WrapText(const char *Buffer,FTBBox *bounds) {
+ int breakIdx = 0; // The index of the last break character
+ int lineStart = 0; // The character index of the line start
+ float nextStart = 0.0; // The total width of the line being generated
+ float breakWidth = 0.0; // The width of the line up to the last word break
+ float currentWidth = 0.0; // The width of all characters on the line being generated
+ float prevWidth; // The width of all characters but the current glyph
+ float wordLength = 0.0; // The length of the block since the last break character
+ float glyphWidth,advance;
+ FTBBox glyphBounds;
+ /* Reset the pen position */
+ pen.Y(0);
+
+ if (bounds) {
+ bounds->Invalidate();
+ } /* If we have bounds mark them invalid (if bounds) */
+
+ for (int charIdx = 0;Buffer[charIdx];charIdx++) {
+ /* Find the width of the current glyph */
+ CheckGlyph(currentFont,Buffer[charIdx]);
+ glyphBounds = GetGlyphs(currentFont)->BBox(Buffer[charIdx]);
+ glyphWidth = glyphBounds.upperX - glyphBounds.lowerX;
+
+ advance = GetGlyphs(currentFont)->Advance(Buffer[charIdx],Buffer[charIdx + 1]);
+ prevWidth = currentWidth;
+ /* Compute the width of all glyphs up to the end of Buffer[charIdx] */
+ currentWidth = nextStart + glyphWidth;
+ /* Compute the position of the next glyph */
+ nextStart += advance;
+
+ if ((currentWidth > lineLength) || (Buffer[charIdx] == '\n')) {
+ /* A non whitespace character has exceeded the line length. Or a */
+ /* newline character has forced a line break. Output the last */
+ /* line and start a new line after the break character. */
+
+ if (!breakIdx || (Buffer[charIdx] == '\n')) {
+ /* Break on the previous character */
+ breakIdx = charIdx - 1;
+ breakWidth = prevWidth;
+ /* None of the previous word will be carried to the next line */
+ wordLength = 0;
+ /* If the current character is a newline discard it's advance */
+ if (Buffer[charIdx] == '\n') advance = 0;
+ } /* If we have not yet found a break break on the last character (if !breakIdx) */
+
+ float remainingWidth = lineLength - breakWidth;
+
+ /* Render the current substring */
+ if (Buffer[breakIdx + 1] == '\n') {
+ breakIdx++;
+ OutputWrapped(Buffer,lineStart,breakIdx -1,remainingWidth,bounds);
+ } else {
+ OutputWrapped(Buffer,lineStart,breakIdx ,remainingWidth,bounds);
+ } /* If the break character is a newline do not render it (if Buffer[charIdx]) */
+
+ /* Store the start of the next line */
+ lineStart = breakIdx + 1;
+ // TODO: Is Height() the right value here?
+ pen.Y(pen.Y() - GetCharSize(currentFont).Height()*lineSpacing);
+ /* The current width is the width since the last break */
+ nextStart = wordLength + advance;
+ wordLength += advance;
+ currentWidth = wordLength + advance;
+ /* Reset the safe break for the next line */
+ breakIdx = 0;
+ } else if (isspace(Buffer[charIdx])) {
+ /* This is the last word break position */
+ wordLength = 0;
+ breakIdx = charIdx;
+
+ if (!charIdx || !isspace(Buffer[charIdx - 1])) {
+ /* Record the width of the start of the block */
+ breakWidth = currentWidth;
+ } /* Check to see if this is the first whitespace character in a run (if !isspace()) */
+ } else {
+ wordLength += advance;
+ } /* See if Buffer[charIdx] is a space, a break or a regular charactger (if/elseif/else Buffer[]) */
+ } /* Scan the input for all characters that need output (for charIdx) */
+
+ float remainingWidth = lineLength - currentWidth;
+ /* Render any remaining text on the last line */
+ if (alignment == ALIGN_JUST) {
+ alignment = ALIGN_LEFT;
+ OutputWrapped(Buffer,lineStart,-1,remainingWidth,bounds);
+ alignment = ALIGN_JUST;
+ } else {
+ OutputWrapped(Buffer,lineStart,-1,remainingWidth,bounds);
+ } /* Disable justification for the last row (if/else Alignemnt) */
+} /* FTSimpleLayout::WrapText() */
+
+void FTSimpleLayout::WrapText(const wchar_t* Buffer,FTBBox *bounds) {
+ int breakIdx = 0; // The index of the last break character
+ int lineStart = 0; // The character index of the line start
+ float nextStart = 0.0f; // The total width of the line being generated
+ float breakWidth = 0.0f; // The width of the line up to the last word break
+ float currentWidth = 0.0f; // The width of all characters on the line being generated
+ float prevWidth; // The width of all characters but the current glyph
+ float wordLength = 0.0f; // The length of the block since the last break character
+ float glyphWidth,advance;
+ FTBBox glyphBounds;
+ /* Reset the pen position */
+ pen.Y(0);
+
+ if (bounds) {
+ bounds->Invalidate();
+ } /* If we have bounds mark them invalid (if bounds) */
+
+ for (int charIdx = 0;Buffer[charIdx];charIdx++) {
+ /* Find the width of the current glyph */
+ CheckGlyph(currentFont,Buffer[charIdx]);
+ glyphBounds = GetGlyphs(currentFont)->BBox(Buffer[charIdx]);
+ glyphWidth = glyphBounds.upperX - glyphBounds.lowerX;
+
+ advance = GetGlyphs(currentFont)->Advance(Buffer[charIdx],Buffer[charIdx + 1]);
+ prevWidth = currentWidth;
+ /* Compute the width of all glyphs up to the end of Buffer[charIdx] */
+ currentWidth = nextStart + glyphWidth;
+ /* Compute the position of the next glyph */
+ nextStart += advance;
+
+ if ((currentWidth > lineLength) || (Buffer[charIdx] == '\n')) {
+ /* A non whitespace character has exceeded the line length. Or a */
+ /* newline character has forced a line break. Output the last */
+ /* line and start a new line after the break character. */
+
+ if (!breakIdx || (Buffer[charIdx] == '\n')) {
+ /* Break on the previous character */
+ breakIdx = charIdx - 1;
+ breakWidth = prevWidth;
+ /* None of the previous word will be carried to the next line */
+ wordLength = 0;
+ /* If the current character is a newline discard it's advance */
+ if (Buffer[charIdx] == '\n') advance = 0;
+ } /* If we have not yet found a break break on the last character (if !breakIdx) */
+
+ float remainingWidth = lineLength - breakWidth;
+
+ /* Render the current substring */
+ if (Buffer[breakIdx + 1] == '\n') {
+ breakIdx++;
+ OutputWrapped(Buffer,lineStart,breakIdx -1,remainingWidth,bounds);
+ } else {
+ OutputWrapped(Buffer,lineStart,breakIdx ,remainingWidth,bounds);
+ } /* If the break character is a newline do not render it (if Buffer[charIdx]) */
+
+ /* Store the start of the next line */
+ lineStart = breakIdx + 1;
+ // TODO: Is Height() the right value here?
+ pen.Y(pen.Y() - GetCharSize(currentFont).Height()*lineSpacing);
+ /* The current width is the width since the last break */
+ nextStart = wordLength + advance;
+ wordLength += advance;
+ currentWidth = wordLength + advance;
+ /* Reset the safe break for the next line */
+ breakIdx = 0;
+ } else if (isspace(Buffer[charIdx])) {
+ /* This is the last word break position */
+ wordLength = 0;
+ breakIdx = charIdx;
+
+ if (!charIdx || !isspace(Buffer[charIdx - 1])) {
+ /* Record the width of the start of the block */
+ breakWidth = currentWidth;
+ } /* Check to see if this is the first whitespace character in a run (if !isspace()) */
+ } else {
+ wordLength += advance;
+ } /* See if Buffer[charIdx] is a space, a break or a regular charactger (if/elseif/else Buffer[]) */
+ } /* Scan the input for all characters that need output (for charIdx) */
+
+ float remainingWidth = lineLength - currentWidth;
+ /* Render any remaining text on the last line */
+ if (alignment == ALIGN_JUST) {
+ alignment = ALIGN_LEFT;
+ OutputWrapped(Buffer,lineStart,-1,remainingWidth,bounds);
+ alignment = ALIGN_JUST;
+ } else {
+ OutputWrapped(Buffer,lineStart,-1,remainingWidth,bounds);
+ } /* Disable justification for the last row (if/else Alignemnt) */
+} /* FTSimpleLayout::WrapText() */
+
+void FTSimpleLayout::OutputWrapped(const char *Buffer,const int StartIdx,const int EndIdx,const float RemainingWidth,FTBBox *bounds) {
+ float distributeWidth = 0.0;
+ switch (alignment) {
+ case ALIGN_LEFT:
+ pen.X(0);
+ break;
+ case ALIGN_CENTER:
+ pen.X(RemainingWidth/2);
+ break;
+ case ALIGN_RIGHT:
+ pen.X(RemainingWidth);
+ break;
+ case ALIGN_JUST:
+ pen.X(0);
+ distributeWidth = RemainingWidth;
+ break;
+ } /* Allign the text according as specified by Alignment (switch Alignment) */
+
+ if (bounds) {
+ float llx,lly,llz,urx,ury,urz;
+ currentFont->BBox(Buffer,StartIdx,EndIdx,llx,lly,llz,urx,ury,urz);
+
+ /* Add the extra space to the upper x dimension */
+ urx += distributeWidth;
+ // TODO: It's a little silly to convert from a FTBBox to floats and back again, but I don't want to
+ // implement yet another method for finding the bounding box as a BBox.
+ FTBBox temp(llx,lly,llz,urx,ury,urz);
+ temp.Move(FTPoint(pen.X(), pen.Y(), 0.0f));
+
+ if (!bounds->IsValid()) {
+ *bounds = temp;
+ } else {
+ *bounds += temp;
+ } /* See if this is the first area to be added to the bounds (if/else bounds) */
+ } else {
+ RenderSpace(Buffer,StartIdx,EndIdx,distributeWidth);
+ } /* If we have bounds expand them by the lines bounds, otherwise render the line (if/else bounds) */
+} /* FTSimpleLayout::OutputWrapped() */
+
+void FTSimpleLayout::OutputWrapped(const wchar_t *Buffer,const int StartIdx,const int EndIdx,const float RemainingWidth,FTBBox *bounds) {
+ float distributeWidth = 0.0;
+ switch (alignment) {
+ case ALIGN_LEFT:
+ pen.X(0);
+ break;
+ case ALIGN_CENTER:
+ pen.X(RemainingWidth/2);
+ break;
+ case ALIGN_RIGHT:
+ pen.X(RemainingWidth);
+ break;
+ case ALIGN_JUST:
+ pen.X(0);
+ distributeWidth = RemainingWidth;
+ break;
+ } /* Allign the text according as specified by Alignment (switch Alignment) */
+
+ if (bounds) {
+ float llx,lly,llz,urx,ury,urz;
+ currentFont->BBox(Buffer,StartIdx,EndIdx,llx,lly,llz,urx,ury,urz);
+
+ /* Add the extra space to the upper x dimension */
+ urx += distributeWidth;
+ // TODO: It's a little silly to convert from a FTBBox to floats and back again, but I don't want to
+ // implement yet another method for finding the bounding box as a BBox.
+ FTBBox temp(llx,lly,llz,urx,ury,urz);
+ temp.Move(FTPoint(pen.X(), pen.Y(), 0.0f));
+
+ if (!bounds->IsValid()) {
+ *bounds = temp;
+ } else {
+ *bounds += temp;
+ } /* See if this is the first area to be added to the bounds (if/else bounds) */
+ } else {
+ RenderSpace(Buffer,StartIdx,EndIdx,distributeWidth);
+ } /* If we have bounds expand them by the lines bounds, otherwise render the line (if/else bounds) */
+} /* FTSimpleLayout::OutputWrapped() */
+
+void FTSimpleLayout::RenderSpace(const char *String,const int StartIdx,const int EndIdx,const float ExtraSpace) {
+ float space = 0.0;
+
+ if (ExtraSpace > 0.0) {
+ int numSpaces = 0;
+
+ for (int idx = StartIdx;((EndIdx < 0) && String[idx]) || ((EndIdx >= 0) && (idx <= EndIdx));idx++) {
+ if ((idx > StartIdx) && !isspace(String[idx]) && isspace(String[idx - 1])) {
+ numSpaces++;
+ } /* If this is the end of a space block increment the counter (if isspace()) */
+ } /* Count the number of space blocks in the input (for idx) */
+
+ space = ExtraSpace/numSpaces;
+ } /* If there is space to distribute count the number of spaces (if ExtraSpace) */
+
+ for (int idx = StartIdx;((EndIdx < 0) && String[idx]) || ((EndIdx >= 0) && (idx <= EndIdx));idx++) {
+ if ((idx > StartIdx) && !isspace(String[idx]) && isspace(String[idx - 1])) {
+ pen.X(pen.X() + space);
+ } /* If this is the end of a space block distribute the extra space into it (if isspace()) */
+
+ DoRender(currentFont,String[idx],String[idx + 1]);
+ } /* Output all characters of the string (for idx) */
+} /* FTSimpleLayout::RenderSpace() */
+
+void FTSimpleLayout::RenderSpace(const wchar_t *String,const int StartIdx,const int EndIdx,const float ExtraSpace) {
+ float space = 0.0;
+
+ if (ExtraSpace > 0.0) {
+ int numSpaces = 0;
+
+ for (int idx = StartIdx;((EndIdx < 0) && String[idx]) || ((EndIdx >= 0) && (idx <= EndIdx));idx++) {
+ if ((idx > StartIdx) && !isspace(String[idx]) && isspace(String[idx - 1])) {
+ numSpaces++;
+ } /* If this is the end of a space block increment the counter (if isspace()) */
+ } /* Count the number of space blocks in the input (for idx) */
+
+ space = ExtraSpace/numSpaces;
+ } /* If there is space to distribute count the number of spaces (if ExtraSpace) */
+
+ for (int idx = StartIdx;((EndIdx < 0) && String[idx]) || ((EndIdx >= 0) && (idx <= EndIdx));idx++) {
+ if ((idx > StartIdx) && !isspace(String[idx]) && isspace(String[idx - 1])) {
+ pen.X(pen.X() + space);
+ } /* If this is the end of a space block distribute the extra space into it (if isspace()) */
+
+ DoRender(currentFont,String[idx],String[idx + 1]);
+ } /* Output all characters of the string (for idx) */
+} /* FTSimpleLayout::RenderSpace() */
diff --git a/src/Makefile.am b/src/Makefile.am
index aa3308e..92a1607 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -22,6 +22,7 @@ libftgl_la_SOURCES = \
FTPixmapGlyph.cpp \
FTPoint.cpp \
FTPolyGlyph.cpp \
+ FTSimpleLayout.cpp \
FTSize.cpp \
FTTextureGlyph.cpp \
FTVectoriser.cpp \
@@ -49,12 +50,14 @@ ftgl_HEADERS = \
../include/FTGLTextureFont.h \
../include/FTGlyph.h \
../include/FTGlyphContainer.h \
+ ../include/FTLayout.h \
../include/FTLibrary.h \
../include/FTList.h \
../include/FTOutlineGlyph.h \
../include/FTPixmapGlyph.h \
../include/FTPoint.h \
../include/FTPolyGlyph.h \
+ ../include/FTSimpleLayout.h \
../include/FTSize.h \
../include/FTTextureGlyph.h \
../include/FTVector.h \
diff --git a/test/demo.cpp b/test/demo.cpp
index 6e9239a..df51f7b 100644
--- a/test/demo.cpp
+++ b/test/demo.cpp
@@ -1,6 +1,3 @@
-// source changed by mrn@paus.ch/ max rheiner
-// original source: henryj@paradise.net.nz
-
#include <iostream>
#include <stdlib.h> // exit()
@@ -16,7 +13,7 @@
#include "FTGLTextureFont.h"
#include "FTGLPixmapFont.h"
-//#include "mmgr.h"
+#include "mmgr.h"
static FTFont* fonts[5];
static int width;
@@ -25,13 +22,13 @@ static int height;
// YOU'LL PROBABLY WANT TO CHANGE THESE
#ifdef __linux__
- #define DEFAULT_FONT "/usr/share/fonts/truetype/arial.ttf"
+# define DEFAULT_FONT "/usr/share/fonts/truetype/arial.ttf"
#endif
#ifdef __APPLE_CC__
- #define DEFAULT_FONT "/Users/henry/Development/PROJECTS/FTGL/test/font_pack/arial.ttf"
+# define DEFAULT_FONT "/Users/henry/Development/PROJECTS/FTGL/test/font_pack/arial.ttf"
#endif
#ifdef WIN32
- #define DEFAULT_FONT "C:\\WINNT\\Fonts\\arial.ttf"
+# define DEFAULT_FONT "C:\\WINNT\\Fonts\\arial.ttf"
#endif
@@ -68,97 +65,95 @@ my_init( const char* font_filename )
static void
do_ortho()
{
- int w;
- int h;
- GLdouble size;
- GLdouble aspect;
-
- w = width;
- h = height;
- aspect = (GLdouble)w / (GLdouble)h;
-
- // Use the whole window.
- glViewport(0, 0, w, h);
-
- // We are going to do some 2-D orthographic drawing.
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- size = (GLdouble)((w >= h) ? w : h) / 2.0;
- if (w <= h) {
- aspect = (GLdouble)h/(GLdouble)w;
- glOrtho(-size, size, -size*aspect, size*aspect,
- -100000.0, 100000.0);
- }
- else {
- aspect = (GLdouble)w/(GLdouble)h;
- glOrtho(-size*aspect, size*aspect, -size, size,
- -100000.0, 100000.0);
- }
-
- // Make the world and window coordinates coincide so that 1.0 in
- // model space equals one pixel in window space.
- glScaled(aspect, aspect, 1.0);
-
- // Now determine where to draw things.
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
+ int w;
+ int h;
+ GLdouble size;
+ GLdouble aspect;
+
+ w = width;
+ h = height;
+ aspect = (GLdouble)w / (GLdouble)h;
+
+ // Use the whole window.
+ glViewport(0, 0, w, h);
+
+ // We are going to do some 2-D orthographic drawing.
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ size = (GLdouble)((w >= h) ? w : h) / 2.0;
+ if (w <= h) {
+ aspect = (GLdouble)h/(GLdouble)w;
+ glOrtho(-size, size, -size*aspect, size*aspect,
+ -100000.0, 100000.0);
+ }
+ else {
+ aspect = (GLdouble)w/(GLdouble)h;
+ glOrtho(-size*aspect, size*aspect, -size, size,
+ -100000.0, 100000.0);
+ }
+
+ // Make the world and window coordinates coincide so that 1.0 in
+ // model space equals one pixel in window space.
+ glScaled(aspect, aspect, 1.0);
+
+ // Now determine where to draw things.
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
}
void
my_reshape(int w, int h)
{
- width = w;
- height = h;
-
- do_ortho( );
+ width = w;
+ height = h;
+
+ do_ortho( );
}
void
my_handle_key(unsigned char key, int x, int y)
{
- switch (key) {
-
- //!!ELLERS
- case 'q': // Esc or 'q' Quits the program.
- case 27:
- {
- for (int i=0; i<5; i++) {
- if (fonts[i]) {
- delete fonts[i];
- fonts[i] = 0;
- }
- }
- exit(1);
- }
- break;
-
- default:
- break;
- }
+ switch (key) {
+ case 'q': // Esc or 'q' Quits the program.
+ case 27:
+ {
+ for (int i=0; i<5; i++) {
+ if (fonts[i]) {
+ delete fonts[i];
+ fonts[i] = 0;
+ }
+ }
+ exit(1);
+ }
+ break;
+ default:
+ break;
+ }
}
void
draw_scene()
{
- /* Set up some strings with the characters to draw. */
- unsigned int count = 0;
- char string[8][256];
- int i;
- for (i=1; i < 32; i++) { /* Skip zero - it's the null terminator! */
- string[0][count] = i;
- count++;
- }
- string[0][count] = '\0';
+ /* Set up some strings with the characters to draw. */
+ unsigned int count = 0;
+ char string[8][256];
+ int i;
+ for (i=1; i < 32; i++) { /* Skip zero - it's the null terminator! */
+ string[0][count] = i;
+ count++;
+ }
- count = 0;
- for (i=32; i < 64; i++) {
- string[1][count] = i;
- count++;
- }
- string[1][count] = '\0';
+ string[0][count] = '\0';
- count = 0;
+ count = 0;
+ for (i=32; i < 64; i++) {
+ string[1][count] = i;
+ count++;
+ }
+ string[1][count] = '\0';
+
+ count = 0;
for (i=64; i < 96; i++) {
string[2][count] = i;
count++;
@@ -253,72 +248,72 @@ my_idle()
int
file_exists( const char * fontFilePath )
{
- FILE * fp = fopen( fontFilePath, "r" );
-
- if ( fp == NULL )
- {
- // That fopen failed does _not_ definitely mean the file isn't there
- // but for now this is ok
- return 0;
- }
- fclose( fp );
- return 1;
+ FILE * fp = fopen( fontFilePath, "r" );
+
+ if ( fp == NULL )
+ {
+ // That fopen failed does _not_ definitely mean the file isn't there
+ // but for now this is ok
+ return 0;
+ }
+ fclose( fp );
+ return 1;
}
void
usage( const char * program )
{
- std::cerr << "Usage: " << program << " <fontFilePath.ttf>\n" << std::endl;
+ std::cerr << "Usage: " << program << " <fontFilePath.ttf>\n" << std::endl;
}
int
main(int argc, char **argv)
{
- char * fontFilePath;
-
- glutInitWindowSize(600, 600);
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE);
-
- glutCreateWindow("FTGL demo");
-
- if ( argc >= 2 )
- {
- if ( !file_exists( argv[ 1 ] ))
- {
- usage( argv[ 0 ]);
- std::cerr << "Couldn't open file '" << argv[ 1 ] << "'" << std::endl;
- exit( -1 );
- }
- fontFilePath = argv[ 1 ];
- }
- else
- {
- // try a default font
- fontFilePath = DEFAULT_FONT;
-
- if ( !file_exists( fontFilePath ))
- {
- usage( argv[ 0 ]);
- std::cerr << "Couldn't open default file '" << fontFilePath << "'" << std::endl;
- exit( -1 );
- }
- }
-
- my_init( fontFilePath );
-
- glutDisplayFunc(my_display);
- glutReshapeFunc(my_reshape);
- glutIdleFunc(my_idle);
- glutKeyboardFunc(my_handle_key);
-
- glutMainLoop();
-
- for(int x = 0; x < 5; ++x)
+ char * fontFilePath;
+
+ glutInitWindowSize(600, 600);
+ glutInit(&argc, argv);
+ glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE);
+
+ glutCreateWindow("FTGL demo");
+
+ if ( argc >= 2 )
+ {
+ if ( !file_exists( argv[ 1 ] ))
+ {
+ usage( argv[ 0 ]);
+ std::cerr << "Couldn't open file '" << argv[ 1 ] << "'" << std::endl;
+ exit( -1 );
+ }
+ fontFilePath = argv[ 1 ];
+ }
+ else
+ {
+ // try a default font
+ fontFilePath = DEFAULT_FONT;
+
+ if ( !file_exists( fontFilePath ))
{
- delete fonts[x];
+ usage( argv[ 0 ]);
+ std::cerr << "Couldn't open default file '" << fontFilePath << "'" << std::endl;
+ exit( -1 );
}
+ }
+
+ my_init( fontFilePath );
+
+ glutDisplayFunc(my_display);
+ glutReshapeFunc(my_reshape);
+ glutIdleFunc(my_idle);
+ glutKeyboardFunc(my_handle_key);
+
+ glutMainLoop();
+
+ for(int x = 0; x < 5; ++x)
+ {
+ delete fonts[x];
+ }
- return 0;
+ return 0;
}