| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/layout.cpp |
| 3 | // Purpose: Constraint layout system classes |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================= |
| 13 | // declarations |
| 14 | // ============================================================================= |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #if wxUSE_CONSTRAINTS |
| 28 | |
| 29 | #include "wx/layout.h" |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/window.h" |
| 33 | #include "wx/utils.h" |
| 34 | #include "wx/dialog.h" |
| 35 | #include "wx/msgdlg.h" |
| 36 | #include "wx/intl.h" |
| 37 | #endif |
| 38 | |
| 39 | |
| 40 | IMPLEMENT_DYNAMIC_CLASS(wxIndividualLayoutConstraint, wxObject) |
| 41 | IMPLEMENT_DYNAMIC_CLASS(wxLayoutConstraints, wxObject) |
| 42 | |
| 43 | |
| 44 | inline void wxGetAsIs(wxWindowBase* win, int* w, int* h) |
| 45 | { |
| 46 | #if 1 |
| 47 | // The old way. Works for me. |
| 48 | win->GetSize(w, h); |
| 49 | #endif |
| 50 | |
| 51 | #if 0 |
| 52 | // Vadim's change. Breaks wxPython's LayoutAnchors |
| 53 | win->GetBestSize(w, h); |
| 54 | #endif |
| 55 | |
| 56 | #if 0 |
| 57 | // Proposed compromise. Doesn't work. |
| 58 | int sw, sh, bw, bh; |
| 59 | win->GetSize(&sw, &sh); |
| 60 | win->GetBestSize(&bw, &bh); |
| 61 | if (w) |
| 62 | *w = wxMax(sw, bw); |
| 63 | if (h) |
| 64 | *h = wxMax(sh, bh); |
| 65 | #endif |
| 66 | } |
| 67 | |
| 68 | |
| 69 | wxIndividualLayoutConstraint::wxIndividualLayoutConstraint() |
| 70 | { |
| 71 | myEdge = wxTop; |
| 72 | relationship = wxUnconstrained; |
| 73 | margin = 0; |
| 74 | value = 0; |
| 75 | percent = 0; |
| 76 | otherEdge = wxTop; |
| 77 | done = false; |
| 78 | otherWin = (wxWindowBase *) NULL; |
| 79 | } |
| 80 | |
| 81 | void wxIndividualLayoutConstraint::Set(wxRelationship rel, wxWindowBase *otherW, wxEdge otherE, int val, int marg) |
| 82 | { |
| 83 | if (rel == wxSameAs) |
| 84 | { |
| 85 | // If Set is called by the user with wxSameAs then call SameAs to do |
| 86 | // it since it will actually use wxPercent instead. |
| 87 | SameAs(otherW, otherE, marg); |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | relationship = rel; |
| 92 | otherWin = otherW; |
| 93 | otherEdge = otherE; |
| 94 | |
| 95 | if ( rel == wxPercentOf ) |
| 96 | { |
| 97 | percent = val; |
| 98 | } |
| 99 | else |
| 100 | { |
| 101 | value = val; |
| 102 | } |
| 103 | |
| 104 | margin = marg; |
| 105 | } |
| 106 | |
| 107 | void wxIndividualLayoutConstraint::LeftOf(wxWindowBase *sibling, int marg) |
| 108 | { |
| 109 | Set(wxLeftOf, sibling, wxLeft, 0, marg); |
| 110 | } |
| 111 | |
| 112 | void wxIndividualLayoutConstraint::RightOf(wxWindowBase *sibling, int marg) |
| 113 | { |
| 114 | Set(wxRightOf, sibling, wxRight, 0, marg); |
| 115 | } |
| 116 | |
| 117 | void wxIndividualLayoutConstraint::Above(wxWindowBase *sibling, int marg) |
| 118 | { |
| 119 | Set(wxAbove, sibling, wxTop, 0, marg); |
| 120 | } |
| 121 | |
| 122 | void wxIndividualLayoutConstraint::Below(wxWindowBase *sibling, int marg) |
| 123 | { |
| 124 | Set(wxBelow, sibling, wxBottom, 0, marg); |
| 125 | } |
| 126 | |
| 127 | // |
| 128 | // 'Same edge' alignment |
| 129 | // |
| 130 | void wxIndividualLayoutConstraint::SameAs(wxWindowBase *otherW, wxEdge edge, int marg) |
| 131 | { |
| 132 | Set(wxPercentOf, otherW, edge, 100, marg); |
| 133 | } |
| 134 | |
| 135 | // The edge is a percentage of the other window's edge |
| 136 | void wxIndividualLayoutConstraint::PercentOf(wxWindowBase *otherW, wxEdge wh, int per) |
| 137 | { |
| 138 | Set(wxPercentOf, otherW, wh, per); |
| 139 | } |
| 140 | |
| 141 | // |
| 142 | // Edge has absolute value |
| 143 | // |
| 144 | void wxIndividualLayoutConstraint::Absolute(int val) |
| 145 | { |
| 146 | value = val; |
| 147 | relationship = wxAbsolute; |
| 148 | } |
| 149 | |
| 150 | // Reset constraint if it mentions otherWin |
| 151 | bool wxIndividualLayoutConstraint::ResetIfWin(wxWindowBase *otherW) |
| 152 | { |
| 153 | if (otherW == otherWin) |
| 154 | { |
| 155 | myEdge = wxTop; |
| 156 | relationship = wxAsIs; |
| 157 | margin = 0; |
| 158 | value = 0; |
| 159 | percent = 0; |
| 160 | otherEdge = wxTop; |
| 161 | otherWin = (wxWindowBase *) NULL; |
| 162 | return true; |
| 163 | } |
| 164 | |
| 165 | return false; |
| 166 | } |
| 167 | |
| 168 | // Try to satisfy constraint |
| 169 | bool wxIndividualLayoutConstraint::SatisfyConstraint(wxLayoutConstraints *constraints, wxWindowBase *win) |
| 170 | { |
| 171 | if (relationship == wxAbsolute) |
| 172 | { |
| 173 | done = true; |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | switch (myEdge) |
| 178 | { |
| 179 | case wxLeft: |
| 180 | { |
| 181 | switch (relationship) |
| 182 | { |
| 183 | case wxLeftOf: |
| 184 | { |
| 185 | // We can know this edge if: otherWin is win's |
| 186 | // parent, or otherWin has a satisfied constraint, |
| 187 | // or otherWin has no constraint. |
| 188 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 189 | if (edgePos != -1) |
| 190 | { |
| 191 | value = edgePos - margin; |
| 192 | done = true; |
| 193 | return true; |
| 194 | } |
| 195 | else |
| 196 | return false; |
| 197 | } |
| 198 | case wxRightOf: |
| 199 | { |
| 200 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 201 | if (edgePos != -1) |
| 202 | { |
| 203 | value = edgePos + margin; |
| 204 | done = true; |
| 205 | return true; |
| 206 | } |
| 207 | else |
| 208 | return false; |
| 209 | } |
| 210 | case wxPercentOf: |
| 211 | { |
| 212 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 213 | if (edgePos != -1) |
| 214 | { |
| 215 | value = (int)(edgePos*(((float)percent)*0.01) + margin); |
| 216 | done = true; |
| 217 | return true; |
| 218 | } |
| 219 | else |
| 220 | return false; |
| 221 | } |
| 222 | case wxUnconstrained: |
| 223 | { |
| 224 | // We know the left-hand edge position if we know |
| 225 | // the right-hand edge and we know the width; OR if |
| 226 | // we know the centre and the width. |
| 227 | if (constraints->right.GetDone() && constraints->width.GetDone()) |
| 228 | { |
| 229 | value = (constraints->right.GetValue() - constraints->width.GetValue() + margin); |
| 230 | done = true; |
| 231 | return true; |
| 232 | } |
| 233 | else if (constraints->centreX.GetDone() && constraints->width.GetDone()) |
| 234 | { |
| 235 | value = (int)(constraints->centreX.GetValue() - (constraints->width.GetValue()/2) + margin); |
| 236 | done = true; |
| 237 | return true; |
| 238 | } |
| 239 | else |
| 240 | return false; |
| 241 | } |
| 242 | case wxAsIs: |
| 243 | { |
| 244 | int y; |
| 245 | win->GetPosition(&value, &y); |
| 246 | done = true; |
| 247 | return true; |
| 248 | } |
| 249 | default: |
| 250 | break; |
| 251 | } |
| 252 | break; |
| 253 | } |
| 254 | case wxRight: |
| 255 | { |
| 256 | switch (relationship) |
| 257 | { |
| 258 | case wxLeftOf: |
| 259 | { |
| 260 | // We can know this edge if: otherWin is win's |
| 261 | // parent, or otherWin has a satisfied constraint, |
| 262 | // or otherWin has no constraint. |
| 263 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 264 | if (edgePos != -1) |
| 265 | { |
| 266 | value = edgePos - margin; |
| 267 | done = true; |
| 268 | return true; |
| 269 | } |
| 270 | else |
| 271 | return false; |
| 272 | } |
| 273 | case wxRightOf: |
| 274 | { |
| 275 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 276 | if (edgePos != -1) |
| 277 | { |
| 278 | value = edgePos + margin; |
| 279 | done = true; |
| 280 | return true; |
| 281 | } |
| 282 | else |
| 283 | return false; |
| 284 | } |
| 285 | case wxPercentOf: |
| 286 | { |
| 287 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 288 | if (edgePos != -1) |
| 289 | { |
| 290 | value = (int)(edgePos*(((float)percent)*0.01) - margin); |
| 291 | done = true; |
| 292 | return true; |
| 293 | } |
| 294 | else |
| 295 | return false; |
| 296 | } |
| 297 | case wxUnconstrained: |
| 298 | { |
| 299 | // We know the right-hand edge position if we know the |
| 300 | // left-hand edge and we know the width, OR if we know the |
| 301 | // centre edge and the width. |
| 302 | if (constraints->left.GetDone() && constraints->width.GetDone()) |
| 303 | { |
| 304 | value = (constraints->left.GetValue() + constraints->width.GetValue() - margin); |
| 305 | done = true; |
| 306 | return true; |
| 307 | } |
| 308 | else if (constraints->centreX.GetDone() && constraints->width.GetDone()) |
| 309 | { |
| 310 | value = (int)(constraints->centreX.GetValue() + (constraints->width.GetValue()/2) - margin); |
| 311 | done = true; |
| 312 | return true; |
| 313 | } |
| 314 | else |
| 315 | return false; |
| 316 | } |
| 317 | case wxAsIs: |
| 318 | { |
| 319 | int x, y; |
| 320 | int w, h; |
| 321 | wxGetAsIs(win, &w, &h); |
| 322 | win->GetPosition(&x, &y); |
| 323 | value = x + w; |
| 324 | done = true; |
| 325 | return true; |
| 326 | } |
| 327 | default: |
| 328 | break; |
| 329 | } |
| 330 | break; |
| 331 | } |
| 332 | case wxTop: |
| 333 | { |
| 334 | switch (relationship) |
| 335 | { |
| 336 | case wxAbove: |
| 337 | { |
| 338 | // We can know this edge if: otherWin is win's |
| 339 | // parent, or otherWin has a satisfied constraint, |
| 340 | // or otherWin has no constraint. |
| 341 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 342 | if (edgePos != -1) |
| 343 | { |
| 344 | value = edgePos - margin; |
| 345 | done = true; |
| 346 | return true; |
| 347 | } |
| 348 | else |
| 349 | return false; |
| 350 | } |
| 351 | case wxBelow: |
| 352 | { |
| 353 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 354 | if (edgePos != -1) |
| 355 | { |
| 356 | value = edgePos + margin; |
| 357 | done = true; |
| 358 | return true; |
| 359 | } |
| 360 | else |
| 361 | return false; |
| 362 | } |
| 363 | case wxPercentOf: |
| 364 | { |
| 365 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 366 | if (edgePos != -1) |
| 367 | { |
| 368 | value = (int)(edgePos*(((float)percent)*0.01) + margin); |
| 369 | done = true; |
| 370 | return true; |
| 371 | } |
| 372 | else |
| 373 | return false; |
| 374 | } |
| 375 | case wxUnconstrained: |
| 376 | { |
| 377 | // We know the top edge position if we know the bottom edge |
| 378 | // and we know the height; OR if we know the centre edge and |
| 379 | // the height. |
| 380 | if (constraints->bottom.GetDone() && constraints->height.GetDone()) |
| 381 | { |
| 382 | value = (constraints->bottom.GetValue() - constraints->height.GetValue() + margin); |
| 383 | done = true; |
| 384 | return true; |
| 385 | } |
| 386 | else if (constraints->centreY.GetDone() && constraints->height.GetDone()) |
| 387 | { |
| 388 | value = (constraints->centreY.GetValue() - (constraints->height.GetValue()/2) + margin); |
| 389 | done = true; |
| 390 | return true; |
| 391 | } |
| 392 | else |
| 393 | return false; |
| 394 | } |
| 395 | case wxAsIs: |
| 396 | { |
| 397 | int x; |
| 398 | win->GetPosition(&x, &value); |
| 399 | done = true; |
| 400 | return true; |
| 401 | } |
| 402 | default: |
| 403 | break; |
| 404 | } |
| 405 | break; |
| 406 | } |
| 407 | case wxBottom: |
| 408 | { |
| 409 | switch (relationship) |
| 410 | { |
| 411 | case wxAbove: |
| 412 | { |
| 413 | // We can know this edge if: otherWin is win's parent, |
| 414 | // or otherWin has a satisfied constraint, or |
| 415 | // otherWin has no constraint. |
| 416 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 417 | if (edgePos != -1) |
| 418 | { |
| 419 | value = edgePos + margin; |
| 420 | done = true; |
| 421 | return true; |
| 422 | } |
| 423 | else |
| 424 | return false; |
| 425 | } |
| 426 | case wxBelow: |
| 427 | { |
| 428 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 429 | if (edgePos != -1) |
| 430 | { |
| 431 | value = edgePos - margin; |
| 432 | done = true; |
| 433 | return true; |
| 434 | } |
| 435 | else |
| 436 | return false; |
| 437 | } |
| 438 | case wxPercentOf: |
| 439 | { |
| 440 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 441 | if (edgePos != -1) |
| 442 | { |
| 443 | value = (int)(edgePos*(((float)percent)*0.01) - margin); |
| 444 | done = true; |
| 445 | return true; |
| 446 | } |
| 447 | else |
| 448 | return false; |
| 449 | } |
| 450 | case wxUnconstrained: |
| 451 | { |
| 452 | // We know the bottom edge position if we know the top edge |
| 453 | // and we know the height; OR if we know the centre edge and |
| 454 | // the height. |
| 455 | if (constraints->top.GetDone() && constraints->height.GetDone()) |
| 456 | { |
| 457 | value = (constraints->top.GetValue() + constraints->height.GetValue() - margin); |
| 458 | done = true; |
| 459 | return true; |
| 460 | } |
| 461 | else if (constraints->centreY.GetDone() && constraints->height.GetDone()) |
| 462 | { |
| 463 | value = (constraints->centreY.GetValue() + (constraints->height.GetValue()/2) - margin); |
| 464 | done = true; |
| 465 | return true; |
| 466 | } |
| 467 | else |
| 468 | return false; |
| 469 | } |
| 470 | case wxAsIs: |
| 471 | { |
| 472 | int x, y; |
| 473 | int w, h; |
| 474 | wxGetAsIs(win, &w, &h); |
| 475 | win->GetPosition(&x, &y); |
| 476 | value = h + y; |
| 477 | done = true; |
| 478 | return true; |
| 479 | } |
| 480 | default: |
| 481 | break; |
| 482 | } |
| 483 | break; |
| 484 | } |
| 485 | case wxCentreX: |
| 486 | { |
| 487 | switch (relationship) |
| 488 | { |
| 489 | case wxLeftOf: |
| 490 | { |
| 491 | // We can know this edge if: otherWin is win's parent, or |
| 492 | // otherWin has a satisfied constraint, or otherWin has no |
| 493 | // constraint. |
| 494 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 495 | if (edgePos != -1) |
| 496 | { |
| 497 | value = edgePos - margin; |
| 498 | done = true; |
| 499 | return true; |
| 500 | } |
| 501 | else |
| 502 | return false; |
| 503 | } |
| 504 | case wxRightOf: |
| 505 | { |
| 506 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 507 | if (edgePos != -1) |
| 508 | { |
| 509 | value = edgePos + margin; |
| 510 | done = true; |
| 511 | return true; |
| 512 | } |
| 513 | else |
| 514 | return false; |
| 515 | } |
| 516 | case wxPercentOf: |
| 517 | { |
| 518 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 519 | if (edgePos != -1) |
| 520 | { |
| 521 | value = (int)(edgePos*(((float)percent)*0.01) + margin); |
| 522 | done = true; |
| 523 | return true; |
| 524 | } |
| 525 | else |
| 526 | return false; |
| 527 | } |
| 528 | case wxUnconstrained: |
| 529 | { |
| 530 | // We know the centre position if we know |
| 531 | // the left-hand edge and we know the width, OR |
| 532 | // the right-hand edge and the width |
| 533 | if (constraints->left.GetDone() && constraints->width.GetDone()) |
| 534 | { |
| 535 | value = (int)(constraints->left.GetValue() + (constraints->width.GetValue()/2) + margin); |
| 536 | done = true; |
| 537 | return true; |
| 538 | } |
| 539 | else if (constraints->right.GetDone() && constraints->width.GetDone()) |
| 540 | { |
| 541 | value = (int)(constraints->left.GetValue() - (constraints->width.GetValue()/2) + margin); |
| 542 | done = true; |
| 543 | return true; |
| 544 | } |
| 545 | else |
| 546 | return false; |
| 547 | } |
| 548 | default: |
| 549 | break; |
| 550 | } |
| 551 | break; |
| 552 | } |
| 553 | case wxCentreY: |
| 554 | { |
| 555 | switch (relationship) |
| 556 | { |
| 557 | case wxAbove: |
| 558 | { |
| 559 | // We can know this edge if: otherWin is win's parent, |
| 560 | // or otherWin has a satisfied constraint, or otherWin |
| 561 | // has no constraint. |
| 562 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 563 | if (edgePos != -1) |
| 564 | { |
| 565 | value = edgePos - margin; |
| 566 | done = true; |
| 567 | return true; |
| 568 | } |
| 569 | else |
| 570 | return false; |
| 571 | } |
| 572 | case wxBelow: |
| 573 | { |
| 574 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 575 | if (edgePos != -1) |
| 576 | { |
| 577 | value = edgePos + margin; |
| 578 | done = true; |
| 579 | return true; |
| 580 | } |
| 581 | else |
| 582 | return false; |
| 583 | } |
| 584 | case wxPercentOf: |
| 585 | { |
| 586 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 587 | if (edgePos != -1) |
| 588 | { |
| 589 | value = (int)(edgePos*(((float)percent)*0.01) + margin); |
| 590 | done = true; |
| 591 | return true; |
| 592 | } |
| 593 | else |
| 594 | return false; |
| 595 | } |
| 596 | case wxUnconstrained: |
| 597 | { |
| 598 | // We know the centre position if we know |
| 599 | // the top edge and we know the height, OR |
| 600 | // the bottom edge and the height. |
| 601 | if (constraints->bottom.GetDone() && constraints->height.GetDone()) |
| 602 | { |
| 603 | value = (int)(constraints->bottom.GetValue() - (constraints->height.GetValue()/2) + margin); |
| 604 | done = true; |
| 605 | return true; |
| 606 | } |
| 607 | else if (constraints->top.GetDone() && constraints->height.GetDone()) |
| 608 | { |
| 609 | value = (int)(constraints->top.GetValue() + (constraints->height.GetValue()/2) + margin); |
| 610 | done = true; |
| 611 | return true; |
| 612 | } |
| 613 | else |
| 614 | return false; |
| 615 | } |
| 616 | default: |
| 617 | break; |
| 618 | } |
| 619 | break; |
| 620 | } |
| 621 | case wxWidth: |
| 622 | { |
| 623 | switch (relationship) |
| 624 | { |
| 625 | case wxPercentOf: |
| 626 | { |
| 627 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 628 | if (edgePos != -1) |
| 629 | { |
| 630 | value = (int)(edgePos*(((float)percent)*0.01)); |
| 631 | done = true; |
| 632 | return true; |
| 633 | } |
| 634 | else |
| 635 | return false; |
| 636 | } |
| 637 | case wxAsIs: |
| 638 | { |
| 639 | if (win) |
| 640 | { |
| 641 | int h; |
| 642 | wxGetAsIs(win, &value, &h); |
| 643 | done = true; |
| 644 | return true; |
| 645 | } |
| 646 | else return false; |
| 647 | } |
| 648 | case wxUnconstrained: |
| 649 | { |
| 650 | // We know the width if we know the left edge and the right edge, OR |
| 651 | // if we know the left edge and the centre, OR |
| 652 | // if we know the right edge and the centre |
| 653 | if (constraints->left.GetDone() && constraints->right.GetDone()) |
| 654 | { |
| 655 | value = constraints->right.GetValue() - constraints->left.GetValue(); |
| 656 | done = true; |
| 657 | return true; |
| 658 | } |
| 659 | else if (constraints->centreX.GetDone() && constraints->left.GetDone()) |
| 660 | { |
| 661 | value = (int)(2*(constraints->centreX.GetValue() - constraints->left.GetValue())); |
| 662 | done = true; |
| 663 | return true; |
| 664 | } |
| 665 | else if (constraints->centreX.GetDone() && constraints->right.GetDone()) |
| 666 | { |
| 667 | value = (int)(2*(constraints->right.GetValue() - constraints->centreX.GetValue())); |
| 668 | done = true; |
| 669 | return true; |
| 670 | } |
| 671 | else |
| 672 | return false; |
| 673 | } |
| 674 | default: |
| 675 | break; |
| 676 | } |
| 677 | break; |
| 678 | } |
| 679 | case wxHeight: |
| 680 | { |
| 681 | switch (relationship) |
| 682 | { |
| 683 | case wxPercentOf: |
| 684 | { |
| 685 | int edgePos = GetEdge(otherEdge, win, otherWin); |
| 686 | if (edgePos != -1) |
| 687 | { |
| 688 | value = (int)(edgePos*(((float)percent)*0.01)); |
| 689 | done = true; |
| 690 | return true; |
| 691 | } |
| 692 | else |
| 693 | return false; |
| 694 | } |
| 695 | case wxAsIs: |
| 696 | { |
| 697 | if (win) |
| 698 | { |
| 699 | int w; |
| 700 | wxGetAsIs(win, &w, &value); |
| 701 | done = true; |
| 702 | return true; |
| 703 | } |
| 704 | else return false; |
| 705 | } |
| 706 | case wxUnconstrained: |
| 707 | { |
| 708 | // We know the height if we know the top edge and the bottom edge, OR |
| 709 | // if we know the top edge and the centre, OR |
| 710 | // if we know the bottom edge and the centre |
| 711 | if (constraints->top.GetDone() && constraints->bottom.GetDone()) |
| 712 | { |
| 713 | value = constraints->bottom.GetValue() - constraints->top.GetValue(); |
| 714 | done = true; |
| 715 | return true; |
| 716 | } |
| 717 | else if (constraints->top.GetDone() && constraints->centreY.GetDone()) |
| 718 | { |
| 719 | value = (int)(2*(constraints->centreY.GetValue() - constraints->top.GetValue())); |
| 720 | done = true; |
| 721 | return true; |
| 722 | } |
| 723 | else if (constraints->bottom.GetDone() && constraints->centreY.GetDone()) |
| 724 | { |
| 725 | value = (int)(2*(constraints->bottom.GetValue() - constraints->centreY.GetValue())); |
| 726 | done = true; |
| 727 | return true; |
| 728 | } |
| 729 | else |
| 730 | return false; |
| 731 | } |
| 732 | default: |
| 733 | break; |
| 734 | } |
| 735 | break; |
| 736 | } |
| 737 | default: |
| 738 | break; |
| 739 | } |
| 740 | return false; |
| 741 | } |
| 742 | |
| 743 | // Get the value of this edge or dimension, or if this is not determinable, -1. |
| 744 | int wxIndividualLayoutConstraint::GetEdge(wxEdge which, |
| 745 | wxWindowBase *thisWin, |
| 746 | wxWindowBase *other) const |
| 747 | { |
| 748 | // If the edge or dimension belongs to the parent, then we know the |
| 749 | // dimension is obtainable immediately. E.g. a wxExpandSizer may contain a |
| 750 | // button (but the button's true parent is a panel, not the sizer) |
| 751 | if (other->GetChildren().Find((wxWindow*)thisWin)) |
| 752 | { |
| 753 | switch (which) |
| 754 | { |
| 755 | case wxLeft: |
| 756 | { |
| 757 | return 0; |
| 758 | } |
| 759 | case wxTop: |
| 760 | { |
| 761 | return 0; |
| 762 | } |
| 763 | case wxRight: |
| 764 | { |
| 765 | int w, h; |
| 766 | other->GetClientSizeConstraint(&w, &h); |
| 767 | return w; |
| 768 | } |
| 769 | case wxBottom: |
| 770 | { |
| 771 | int w, h; |
| 772 | other->GetClientSizeConstraint(&w, &h); |
| 773 | return h; |
| 774 | } |
| 775 | case wxWidth: |
| 776 | { |
| 777 | int w, h; |
| 778 | other->GetClientSizeConstraint(&w, &h); |
| 779 | return w; |
| 780 | } |
| 781 | case wxHeight: |
| 782 | { |
| 783 | int w, h; |
| 784 | other->GetClientSizeConstraint(&w, &h); |
| 785 | return h; |
| 786 | } |
| 787 | case wxCentreX: |
| 788 | case wxCentreY: |
| 789 | { |
| 790 | int w, h; |
| 791 | other->GetClientSizeConstraint(&w, &h); |
| 792 | if (which == wxCentreX) |
| 793 | return (int)(w/2); |
| 794 | else |
| 795 | return (int)(h/2); |
| 796 | } |
| 797 | default: |
| 798 | return -1; |
| 799 | } |
| 800 | } |
| 801 | switch (which) |
| 802 | { |
| 803 | case wxLeft: |
| 804 | { |
| 805 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 806 | // If no constraints, it means the window is not dependent |
| 807 | // on anything, and therefore we know its value immediately |
| 808 | if (constr) |
| 809 | { |
| 810 | if (constr->left.GetDone()) |
| 811 | return constr->left.GetValue(); |
| 812 | else |
| 813 | return -1; |
| 814 | } |
| 815 | else |
| 816 | { |
| 817 | int x, y; |
| 818 | other->GetPosition(&x, &y); |
| 819 | return x; |
| 820 | } |
| 821 | } |
| 822 | case wxTop: |
| 823 | { |
| 824 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 825 | // If no constraints, it means the window is not dependent |
| 826 | // on anything, and therefore we know its value immediately |
| 827 | if (constr) |
| 828 | { |
| 829 | if (constr->top.GetDone()) |
| 830 | return constr->top.GetValue(); |
| 831 | else |
| 832 | return -1; |
| 833 | } |
| 834 | else |
| 835 | { |
| 836 | int x, y; |
| 837 | other->GetPosition(&x, &y); |
| 838 | return y; |
| 839 | } |
| 840 | } |
| 841 | case wxRight: |
| 842 | { |
| 843 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 844 | // If no constraints, it means the window is not dependent |
| 845 | // on anything, and therefore we know its value immediately |
| 846 | if (constr) |
| 847 | { |
| 848 | if (constr->right.GetDone()) |
| 849 | return constr->right.GetValue(); |
| 850 | else |
| 851 | return -1; |
| 852 | } |
| 853 | else |
| 854 | { |
| 855 | int x, y, w, h; |
| 856 | other->GetPosition(&x, &y); |
| 857 | other->GetSize(&w, &h); |
| 858 | return (int)(x + w); |
| 859 | } |
| 860 | } |
| 861 | case wxBottom: |
| 862 | { |
| 863 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 864 | // If no constraints, it means the window is not dependent |
| 865 | // on anything, and therefore we know its value immediately |
| 866 | if (constr) |
| 867 | { |
| 868 | if (constr->bottom.GetDone()) |
| 869 | return constr->bottom.GetValue(); |
| 870 | else |
| 871 | return -1; |
| 872 | } |
| 873 | else |
| 874 | { |
| 875 | int x, y, w, h; |
| 876 | other->GetPosition(&x, &y); |
| 877 | other->GetSize(&w, &h); |
| 878 | return (int)(y + h); |
| 879 | } |
| 880 | } |
| 881 | case wxWidth: |
| 882 | { |
| 883 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 884 | // If no constraints, it means the window is not dependent |
| 885 | // on anything, and therefore we know its value immediately |
| 886 | if (constr) |
| 887 | { |
| 888 | if (constr->width.GetDone()) |
| 889 | return constr->width.GetValue(); |
| 890 | else |
| 891 | return -1; |
| 892 | } |
| 893 | else |
| 894 | { |
| 895 | int w, h; |
| 896 | other->GetSize(&w, &h); |
| 897 | return w; |
| 898 | } |
| 899 | } |
| 900 | case wxHeight: |
| 901 | { |
| 902 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 903 | // If no constraints, it means the window is not dependent |
| 904 | // on anything, and therefore we know its value immediately |
| 905 | if (constr) |
| 906 | { |
| 907 | if (constr->height.GetDone()) |
| 908 | return constr->height.GetValue(); |
| 909 | else |
| 910 | return -1; |
| 911 | } |
| 912 | else |
| 913 | { |
| 914 | int w, h; |
| 915 | other->GetSize(&w, &h); |
| 916 | return h; |
| 917 | } |
| 918 | } |
| 919 | case wxCentreX: |
| 920 | { |
| 921 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 922 | // If no constraints, it means the window is not dependent |
| 923 | // on anything, and therefore we know its value immediately |
| 924 | if (constr) |
| 925 | { |
| 926 | if (constr->centreX.GetDone()) |
| 927 | return constr->centreX.GetValue(); |
| 928 | else |
| 929 | return -1; |
| 930 | } |
| 931 | else |
| 932 | { |
| 933 | int x, y, w, h; |
| 934 | other->GetPosition(&x, &y); |
| 935 | other->GetSize(&w, &h); |
| 936 | return (int)(x + (w/2)); |
| 937 | } |
| 938 | } |
| 939 | case wxCentreY: |
| 940 | { |
| 941 | wxLayoutConstraints *constr = other->GetConstraints(); |
| 942 | // If no constraints, it means the window is not dependent |
| 943 | // on anything, and therefore we know its value immediately |
| 944 | if (constr) |
| 945 | { |
| 946 | if (constr->centreY.GetDone()) |
| 947 | return constr->centreY.GetValue(); |
| 948 | else |
| 949 | return -1; |
| 950 | } |
| 951 | else |
| 952 | { |
| 953 | int x, y, w, h; |
| 954 | other->GetPosition(&x, &y); |
| 955 | other->GetSize(&w, &h); |
| 956 | return (int)(y + (h/2)); |
| 957 | } |
| 958 | } |
| 959 | default: |
| 960 | break; |
| 961 | } |
| 962 | return -1; |
| 963 | } |
| 964 | |
| 965 | wxLayoutConstraints::wxLayoutConstraints() |
| 966 | { |
| 967 | left.SetEdge(wxLeft); |
| 968 | top.SetEdge(wxTop); |
| 969 | right.SetEdge(wxRight); |
| 970 | bottom.SetEdge(wxBottom); |
| 971 | centreX.SetEdge(wxCentreX); |
| 972 | centreY.SetEdge(wxCentreY); |
| 973 | width.SetEdge(wxWidth); |
| 974 | height.SetEdge(wxHeight); |
| 975 | } |
| 976 | |
| 977 | bool wxLayoutConstraints::SatisfyConstraints(wxWindowBase *win, int *nChanges) |
| 978 | { |
| 979 | int noChanges = 0; |
| 980 | |
| 981 | bool done = width.GetDone(); |
| 982 | bool newDone = (done ? true : width.SatisfyConstraint(this, win)); |
| 983 | if (newDone != done) |
| 984 | noChanges ++; |
| 985 | |
| 986 | done = height.GetDone(); |
| 987 | newDone = (done ? true : height.SatisfyConstraint(this, win)); |
| 988 | if (newDone != done) |
| 989 | noChanges ++; |
| 990 | |
| 991 | done = left.GetDone(); |
| 992 | newDone = (done ? true : left.SatisfyConstraint(this, win)); |
| 993 | if (newDone != done) |
| 994 | noChanges ++; |
| 995 | |
| 996 | done = top.GetDone(); |
| 997 | newDone = (done ? true : top.SatisfyConstraint(this, win)); |
| 998 | if (newDone != done) |
| 999 | noChanges ++; |
| 1000 | |
| 1001 | done = right.GetDone(); |
| 1002 | newDone = (done ? true : right.SatisfyConstraint(this, win)); |
| 1003 | if (newDone != done) |
| 1004 | noChanges ++; |
| 1005 | |
| 1006 | done = bottom.GetDone(); |
| 1007 | newDone = (done ? true : bottom.SatisfyConstraint(this, win)); |
| 1008 | if (newDone != done) |
| 1009 | noChanges ++; |
| 1010 | |
| 1011 | done = centreX.GetDone(); |
| 1012 | newDone = (done ? true : centreX.SatisfyConstraint(this, win)); |
| 1013 | if (newDone != done) |
| 1014 | noChanges ++; |
| 1015 | |
| 1016 | done = centreY.GetDone(); |
| 1017 | newDone = (done ? true : centreY.SatisfyConstraint(this, win)); |
| 1018 | if (newDone != done) |
| 1019 | noChanges ++; |
| 1020 | |
| 1021 | *nChanges = noChanges; |
| 1022 | |
| 1023 | return AreSatisfied(); |
| 1024 | } |
| 1025 | |
| 1026 | #endif // wxUSE_CONSTRAINTS |