1 /* 2 * Copyright 2006-2013, Haiku, Inc. All rights reserved. 3 * Copyright 1997, 1998 R3 Software Ltd. All Rights Reserved. 4 * Distributed under the terms of the MIT License. 5 * 6 * Authors: 7 * Stephan Aßmus, superstippi@gmx.de 8 * Philippe Saint-Pierre, stpere@gmail.com 9 * John Scipione, jscipione@gmail.com 10 * Timothy Wayper, timmy@wunderbear.com 11 */ 12 13 14 #include "CalcView.h" 15 16 #include <stdlib.h> 17 #include <stdio.h> 18 #include <string.h> 19 #include <ctype.h> 20 #include <assert.h> 21 22 #include <AboutWindow.h> 23 #include <Alert.h> 24 #include <Application.h> 25 #include <AppFileInfo.h> 26 #include <Beep.h> 27 #include <Bitmap.h> 28 #include <Catalog.h> 29 #include <ControlLook.h> 30 #include <Clipboard.h> 31 #include <File.h> 32 #include <Font.h> 33 #include <MenuItem.h> 34 #include <Message.h> 35 #include <MessageRunner.h> 36 #include <PlaySound.h> 37 #include <Point.h> 38 #include <PopUpMenu.h> 39 #include <Region.h> 40 #include <Roster.h> 41 42 #include <ExpressionParser.h> 43 44 #include "CalcApplication.h" 45 #include "CalcOptions.h" 46 #include "ExpressionTextView.h" 47 48 49 #undef B_TRANSLATION_CONTEXT 50 #define B_TRANSLATION_CONTEXT "CalcView" 51 52 53 static const int32 kMsgCalculating = 'calc'; 54 static const int32 kMsgAnimateDots = 'dots'; 55 static const int32 kMsgDoneEvaluating = 'done'; 56 57 //const uint8 K_COLOR_OFFSET = 32; 58 const float kFontScaleY = 0.4f; 59 const float kFontScaleX = 0.4f; 60 const float kExpressionFontScaleY = 0.6f; 61 const float kDisplayScaleY = 0.2f; 62 63 static const bigtime_t kFlashOnOffInterval = 100000; 64 static const bigtime_t kCalculatingInterval = 1000000; 65 static const bigtime_t kAnimationInterval = 333333; 66 67 static const float kMinimumWidthCompact = 130.0f; 68 static const float kMaximumWidthCompact = 400.0f; 69 static const float kMinimumHeightCompact = 20.0f; 70 static const float kMaximumHeightCompact = 60.0f; 71 72 // Basic mode size limits are defined in CalcView.h so 73 // that they can be used by the CalcWindow constructor. 74 75 static const float kMinimumWidthScientific = 240.0f; 76 static const float kMaximumWidthScientific = 400.0f; 77 static const float kMinimumHeightScientific = 200.0f; 78 static const float kMaximumHeightScientific = 400.0f; 79 80 // basic mode keypad layout (default) 81 const char *kKeypadDescriptionBasic = 82 "7 8 9 ( ) \n" 83 "4 5 6 * / \n" 84 "1 2 3 + - \n" 85 "0 . BS = C \n"; 86 87 // scientific mode keypad layout 88 const char *kKeypadDescriptionScientific = 89 "ln sin cos tan π \n" 90 "log asin acos atan sqrt \n" 91 "exp sinh cosh tanh cbrt \n" 92 "! ceil floor E ^ \n" 93 "7 8 9 ( ) \n" 94 "4 5 6 * / \n" 95 "1 2 3 + - \n" 96 "0 . BS = C \n"; 97 98 99 enum { 100 FLAGS_FLASH_KEY = 1 << 0, 101 FLAGS_MOUSE_DOWN = 1 << 1 102 }; 103 104 105 struct CalcView::CalcKey { 106 char label[8]; 107 char code[8]; 108 char keymap[4]; 109 uint32 flags; 110 // float width; 111 }; 112 113 114 CalcView* 115 CalcView::Instantiate(BMessage* archive) 116 { 117 if (!validate_instantiation(archive, "CalcView")) 118 return NULL; 119 120 return new CalcView(archive); 121 } 122 123 124 CalcView::CalcView(BRect frame, rgb_color rgbBaseColor, BMessage* settings) 125 : 126 BView(frame, "DeskCalc", B_FOLLOW_ALL_SIDES, B_WILL_DRAW | B_FRAME_EVENTS), 127 fColumns(5), 128 fRows(4), 129 130 fBaseColor(rgbBaseColor), 131 fExpressionBGColor((rgb_color){ 0, 0, 0, 255 }), 132 133 fHasCustomBaseColor(rgbBaseColor != ui_color(B_PANEL_BACKGROUND_COLOR)), 134 135 fWidth(1), 136 fHeight(1), 137 138 fKeypadDescription(strdup(kKeypadDescriptionBasic)), 139 fKeypad(NULL), 140 141 #ifdef __HAIKU__ 142 fCalcIcon(new BBitmap(BRect(0, 0, 15, 15), 0, B_RGBA32)), 143 #else 144 fCalcIcon(new BBitmap(BRect(0, 0, 15, 15), 0, B_CMAP8)), 145 #endif 146 147 fPopUpMenu(NULL), 148 fAutoNumlockItem(NULL), 149 fAudioFeedbackItem(NULL), 150 fOptions(new CalcOptions()), 151 fEvaluateThread(-1), 152 fEvaluateMessageRunner(NULL), 153 fEvaluateSemaphore(B_BAD_SEM_ID), 154 fEnabled(true) 155 { 156 // tell the app server not to erase our b/g 157 SetViewColor(B_TRANSPARENT_32_BIT); 158 159 _Init(settings); 160 } 161 162 163 CalcView::CalcView(BMessage* archive) 164 : 165 BView(archive), 166 fColumns(5), 167 fRows(4), 168 169 fBaseColor(ui_color(B_PANEL_BACKGROUND_COLOR)), 170 fExpressionBGColor((rgb_color){ 0, 0, 0, 255 }), 171 172 fHasCustomBaseColor(false), 173 174 fWidth(1), 175 fHeight(1), 176 177 fKeypadDescription(strdup(kKeypadDescriptionBasic)), 178 fKeypad(NULL), 179 180 #ifdef __HAIKU__ 181 fCalcIcon(new BBitmap(BRect(0, 0, 15, 15), 0, B_RGBA32)), 182 #else 183 fCalcIcon(new BBitmap(BRect(0, 0, 15, 15), 0, B_CMAP8)), 184 #endif 185 186 fPopUpMenu(NULL), 187 fAutoNumlockItem(NULL), 188 fAudioFeedbackItem(NULL), 189 fOptions(new CalcOptions()), 190 fEvaluateThread(-1), 191 fEvaluateMessageRunner(NULL), 192 fEvaluateSemaphore(B_BAD_SEM_ID), 193 fEnabled(true) 194 { 195 // Do not restore the follow mode, in shelfs, we never follow. 196 SetResizingMode(B_FOLLOW_NONE); 197 198 _Init(archive); 199 } 200 201 202 CalcView::~CalcView() 203 { 204 delete fKeypad; 205 delete fOptions; 206 free(fKeypadDescription); 207 delete fEvaluateMessageRunner; 208 delete_sem(fEvaluateSemaphore); 209 } 210 211 212 void 213 CalcView::AttachedToWindow() 214 { 215 if (be_control_look == NULL) 216 SetFont(be_bold_font); 217 218 BRect frame(Frame()); 219 FrameResized(frame.Width(), frame.Height()); 220 221 bool addKeypadModeMenuItems = true; 222 if (Parent() && (Parent()->Flags() & B_DRAW_ON_CHILDREN) != 0) { 223 // don't add these items if we are a replicant on the desktop 224 addKeypadModeMenuItems = false; 225 } 226 227 // create and attach the pop-up menu 228 _CreatePopUpMenu(addKeypadModeMenuItems); 229 230 if (addKeypadModeMenuItems) 231 SetKeypadMode(fOptions->keypad_mode); 232 } 233 234 235 void 236 CalcView::MessageReceived(BMessage* message) 237 { 238 if (message->what == B_COLORS_UPDATED && !fHasCustomBaseColor) { 239 const char* panelBgColorName = ui_color_name(B_PANEL_BACKGROUND_COLOR); 240 if (message->HasColor(panelBgColorName)) { 241 fBaseColor = message->GetColor(panelBgColorName, fBaseColor); 242 _Colorize(); 243 } 244 245 return; 246 } 247 248 if (Parent() && (Parent()->Flags() & B_DRAW_ON_CHILDREN) != 0) { 249 // if we are embedded in desktop we need to receive these 250 // message here since we don't have a parent BWindow 251 switch (message->what) { 252 case MSG_OPTIONS_AUTO_NUM_LOCK: 253 ToggleAutoNumlock(); 254 return; 255 256 case MSG_OPTIONS_AUDIO_FEEDBACK: 257 ToggleAudioFeedback(); 258 return; 259 260 case MSG_OPTIONS_ANGLE_MODE_RADIAN: 261 SetDegreeMode(false); 262 return; 263 264 case MSG_OPTIONS_ANGLE_MODE_DEGREE: 265 SetDegreeMode(true); 266 return; 267 } 268 } 269 270 // check if message was dropped 271 if (message->WasDropped()) { 272 // pass message on to paste 273 if (message->IsSourceRemote()) 274 Paste(message); 275 } else { 276 // act on posted message type 277 switch (message->what) { 278 279 // handle "cut" 280 case B_CUT: 281 Cut(); 282 break; 283 284 // handle copy 285 case B_COPY: 286 Copy(); 287 break; 288 289 // handle paste 290 case B_PASTE: 291 // access system clipboard 292 if (be_clipboard->Lock()) { 293 BMessage* clipper = be_clipboard->Data(); 294 //clipper->PrintToStream(); 295 Paste(clipper); 296 be_clipboard->Unlock(); 297 } 298 break; 299 300 // (replicant) about box requested 301 case B_ABOUT_REQUESTED: 302 { 303 BAboutWindow* window = new BAboutWindow(kAppName, kSignature); 304 305 // create the about window 306 const char* extraCopyrights[] = { 307 "1997, 1998 R3 Software Ltd.", 308 NULL 309 }; 310 311 const char* authors[] = { 312 "Stephan Aßmus", 313 "John Scipione", 314 "Timothy Wayper", 315 "Ingo Weinhold", 316 NULL 317 }; 318 319 window->AddCopyright(2006, "Haiku, Inc.", extraCopyrights); 320 window->AddAuthors(authors); 321 322 window->Show(); 323 324 break; 325 } 326 327 case MSG_UNFLASH_KEY: 328 { 329 int32 key; 330 if (message->FindInt32("key", &key) == B_OK) 331 _FlashKey(key, 0); 332 333 break; 334 } 335 336 case kMsgAnimateDots: 337 { 338 int32 end = fExpressionTextView->TextLength(); 339 int32 start = end - 3; 340 if (fEnabled || strcmp(fExpressionTextView->Text() + start, 341 "...") != 0) { 342 // stop the message runner 343 delete fEvaluateMessageRunner; 344 fEvaluateMessageRunner = NULL; 345 break; 346 } 347 348 uint8 dot = 0; 349 if (message->FindUInt8("dot", &dot) == B_OK) { 350 rgb_color fontColor = fExpressionTextView->HighColor(); 351 rgb_color backColor = fExpressionTextView->LowColor(); 352 fExpressionTextView->SetStylable(true); 353 fExpressionTextView->SetFontAndColor(start, end, NULL, 0, 354 &backColor); 355 fExpressionTextView->SetFontAndColor(start + dot - 1, 356 start + dot, NULL, 0, &fontColor); 357 fExpressionTextView->SetStylable(false); 358 } 359 360 dot++; 361 if (dot == 4) 362 dot = 1; 363 364 delete fEvaluateMessageRunner; 365 BMessage animate(kMsgAnimateDots); 366 animate.AddUInt8("dot", dot); 367 fEvaluateMessageRunner = new (std::nothrow) BMessageRunner( 368 BMessenger(this), &animate, kAnimationInterval, 1); 369 break; 370 } 371 372 case kMsgCalculating: 373 { 374 // calculation has taken more than 3 seconds 375 if (fEnabled) { 376 // stop the message runner 377 delete fEvaluateMessageRunner; 378 fEvaluateMessageRunner = NULL; 379 break; 380 } 381 382 BString calculating; 383 calculating << B_TRANSLATE("Calculating") << "..."; 384 fExpressionTextView->SetText(calculating.String()); 385 386 delete fEvaluateMessageRunner; 387 BMessage animate(kMsgAnimateDots); 388 animate.AddUInt8("dot", 1U); 389 fEvaluateMessageRunner = new (std::nothrow) BMessageRunner( 390 BMessenger(this), &animate, kAnimationInterval, 1); 391 break; 392 } 393 394 case kMsgDoneEvaluating: 395 { 396 _SetEnabled(true); 397 rgb_color fontColor = fExpressionTextView->HighColor(); 398 fExpressionTextView->SetFontAndColor(NULL, 0, &fontColor); 399 400 const char* result; 401 if (message->FindString("error", &result) == B_OK) 402 fExpressionTextView->SetText(result); 403 else if (message->FindString("value", &result) == B_OK) 404 fExpressionTextView->SetValue(result); 405 406 // stop the message runner 407 delete fEvaluateMessageRunner; 408 fEvaluateMessageRunner = NULL; 409 break; 410 } 411 412 default: 413 BView::MessageReceived(message); 414 break; 415 } 416 } 417 } 418 419 420 void 421 CalcView::Draw(BRect updateRect) 422 { 423 bool drawBackground = !_IsEmbedded(); 424 425 SetHighColor(fBaseColor); 426 BRect expressionRect(_ExpressionRect()); 427 if (updateRect.Intersects(expressionRect)) { 428 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT 429 && expressionRect.Height() >= fCalcIcon->Bounds().Height()) { 430 // render calc icon 431 expressionRect.left = fExpressionTextView->Frame().right + 2; 432 if (drawBackground) { 433 SetHighColor(fBaseColor); 434 FillRect(updateRect & expressionRect); 435 } 436 437 if (fCalcIcon->ColorSpace() == B_RGBA32) { 438 SetDrawingMode(B_OP_ALPHA); 439 SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_OVERLAY); 440 } else { 441 SetDrawingMode(B_OP_OVER); 442 } 443 444 BPoint iconPos; 445 iconPos.x = expressionRect.right - (expressionRect.Width() 446 + fCalcIcon->Bounds().Width()) / 2.0; 447 iconPos.y = expressionRect.top + (expressionRect.Height() 448 - fCalcIcon->Bounds().Height()) / 2.0; 449 DrawBitmap(fCalcIcon, iconPos); 450 451 SetDrawingMode(B_OP_COPY); 452 } 453 454 // render border around expression text view 455 expressionRect = fExpressionTextView->Frame(); 456 expressionRect.InsetBy(-2, -2); 457 if (fOptions->keypad_mode != KEYPAD_MODE_COMPACT && drawBackground) { 458 expressionRect.InsetBy(-2, -2); 459 StrokeRect(expressionRect); 460 expressionRect.InsetBy(1, 1); 461 StrokeRect(expressionRect); 462 expressionRect.InsetBy(1, 1); 463 } 464 465 uint32 flags = 0; 466 if (!drawBackground) 467 flags |= BControlLook::B_BLEND_FRAME; 468 be_control_look->DrawTextControlBorder(this, expressionRect, 469 updateRect, fBaseColor, flags); 470 } 471 472 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT) 473 return; 474 475 // calculate grid sizes 476 BRect keypadRect(_KeypadRect()); 477 478 if (be_control_look != NULL) { 479 if (drawBackground) 480 StrokeRect(keypadRect); 481 keypadRect.InsetBy(1, 1); 482 } 483 484 float sizeDisp = keypadRect.top; 485 float sizeCol = (keypadRect.Width() + 1) / (float)fColumns; 486 float sizeRow = (keypadRect.Height() + 1) / (float)fRows; 487 488 if (!updateRect.Intersects(keypadRect)) 489 return; 490 491 SetFontSize(min_c(sizeRow * kFontScaleY, sizeCol * kFontScaleX)); 492 493 CalcKey* key = fKeypad; 494 for (int row = 0; row < fRows; row++) { 495 for (int col = 0; col < fColumns; col++) { 496 BRect frame; 497 frame.left = keypadRect.left + col * sizeCol; 498 frame.right = keypadRect.left + (col + 1) * sizeCol - 1; 499 frame.top = sizeDisp + row * sizeRow; 500 frame.bottom = sizeDisp + (row + 1) * sizeRow - 1; 501 502 if (drawBackground) { 503 SetHighColor(fBaseColor); 504 StrokeRect(frame); 505 } 506 frame.InsetBy(1, 1); 507 508 uint32 flags = 0; 509 if (!drawBackground) 510 flags |= BControlLook::B_BLEND_FRAME; 511 if (key->flags != 0) 512 flags |= BControlLook::B_ACTIVATED; 513 flags |= BControlLook::B_IGNORE_OUTLINE; 514 515 be_control_look->DrawButtonFrame(this, frame, updateRect, 516 fBaseColor, fBaseColor, flags); 517 518 be_control_look->DrawButtonBackground(this, frame, updateRect, 519 fBaseColor, flags); 520 521 be_control_look->DrawLabel(this, key->label, frame, updateRect, 522 fBaseColor, flags, BAlignment(B_ALIGN_HORIZONTAL_CENTER, 523 B_ALIGN_VERTICAL_CENTER), &fButtonTextColor); 524 525 key++; 526 } 527 } 528 } 529 530 531 void 532 CalcView::MouseDown(BPoint point) 533 { 534 // ensure this view is the current focus 535 if (!fExpressionTextView->IsFocus()) { 536 // Call our version of MakeFocus(), since that will also apply the 537 // num_lock setting. 538 MakeFocus(); 539 } 540 541 // read mouse buttons state 542 int32 buttons = 0; 543 Window()->CurrentMessage()->FindInt32("buttons", &buttons); 544 545 if ((B_PRIMARY_MOUSE_BUTTON & buttons) == 0) { 546 // display popup menu if not primary mouse button 547 BMenuItem* selected; 548 if ((selected = fPopUpMenu->Go(ConvertToScreen(point))) != NULL 549 && selected->Message() != NULL) { 550 Window()->PostMessage(selected->Message(), this); 551 } 552 return; 553 } 554 555 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT) { 556 if (fCalcIcon != NULL) { 557 BRect bounds(Bounds()); 558 bounds.left = bounds.right - fCalcIcon->Bounds().Width(); 559 if (bounds.Contains(point)) { 560 // user clicked on calculator icon 561 fExpressionTextView->Clear(); 562 } 563 } 564 return; 565 } 566 567 // calculate grid sizes 568 float sizeDisp = fHeight * kDisplayScaleY; 569 float sizeCol = fWidth / (float)fColumns; 570 float sizeRow = (fHeight - sizeDisp) / (float)fRows; 571 572 // calculate location within grid 573 int gridCol = (int)floorf(point.x / sizeCol); 574 int gridRow = (int)floorf((point.y - sizeDisp) / sizeRow); 575 576 // check limits 577 if ((gridCol >= 0) && (gridCol < fColumns) 578 && (gridRow >= 0) && (gridRow < fRows)) { 579 580 // process key press 581 int key = gridRow * fColumns + gridCol; 582 _FlashKey(key, FLAGS_MOUSE_DOWN); 583 _PressKey(key); 584 585 // make sure we receive the mouse up! 586 SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS); 587 } 588 } 589 590 591 void 592 CalcView::MouseUp(BPoint point) 593 { 594 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT) 595 return; 596 597 int keys = fRows * fColumns; 598 for (int i = 0; i < keys; i++) { 599 if (fKeypad[i].flags & FLAGS_MOUSE_DOWN) { 600 _FlashKey(i, 0); 601 break; 602 } 603 } 604 } 605 606 607 void 608 CalcView::KeyDown(const char* bytes, int32 numBytes) 609 { 610 // if single byte character... 611 if (numBytes == 1) { 612 613 //printf("Key pressed: %c\n", bytes[0]); 614 615 switch (bytes[0]) { 616 617 case B_ENTER: 618 // translate to evaluate key 619 _PressKey("="); 620 break; 621 622 case B_LEFT_ARROW: 623 case B_BACKSPACE: 624 // translate to backspace key 625 _PressKey("BS"); 626 break; 627 628 case B_SPACE: 629 case B_ESCAPE: 630 case 'c': 631 // translate to clear key 632 _PressKey("C"); 633 break; 634 635 // bracket translation 636 case '[': 637 case '{': 638 _PressKey("("); 639 break; 640 641 case ']': 642 case '}': 643 _PressKey(")"); 644 break; 645 646 default: { 647 // scan the keymap array for match 648 int keys = fRows * fColumns; 649 for (int i = 0; i < keys; i++) { 650 if (fKeypad[i].keymap[0] == bytes[0]) { 651 _PressKey(i); 652 return; 653 } 654 } 655 break; 656 } 657 } 658 } 659 } 660 661 662 void 663 CalcView::MakeFocus(bool focused) 664 { 665 if (focused) { 666 // set num lock 667 if (fOptions->auto_num_lock) { 668 set_keyboard_locks(B_NUM_LOCK 669 | (modifiers() & (B_CAPS_LOCK | B_SCROLL_LOCK))); 670 } 671 } 672 673 // pass on request to text view 674 fExpressionTextView->MakeFocus(focused); 675 } 676 677 678 void 679 CalcView::FrameResized(float width, float height) 680 { 681 fWidth = width; 682 fHeight = height; 683 684 // layout expression text view 685 BRect expressionRect = _ExpressionRect(); 686 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT) { 687 expressionRect.InsetBy(2, 2); 688 expressionRect.right -= ceilf(fCalcIcon->Bounds().Width() * 1.5); 689 } else 690 expressionRect.InsetBy(4, 4); 691 692 fExpressionTextView->MoveTo(expressionRect.LeftTop()); 693 fExpressionTextView->ResizeTo(expressionRect.Width(), expressionRect.Height()); 694 695 // configure expression text view font size and color 696 float sizeDisp = fOptions->keypad_mode == KEYPAD_MODE_COMPACT 697 ? fHeight : fHeight * kDisplayScaleY; 698 BFont font(be_bold_font); 699 font.SetSize(sizeDisp * kExpressionFontScaleY); 700 rgb_color fontColor = fExpressionTextView->HighColor(); 701 fExpressionTextView->SetFontAndColor(&font, B_FONT_ALL, &fontColor); 702 703 expressionRect.OffsetTo(B_ORIGIN); 704 float inset = (expressionRect.Height() - fExpressionTextView->LineHeight(0)) / 2; 705 expressionRect.InsetBy(0, inset); 706 fExpressionTextView->SetTextRect(expressionRect); 707 Invalidate(); 708 } 709 710 711 status_t 712 CalcView::Archive(BMessage* archive, bool deep) const 713 { 714 fExpressionTextView->RemoveSelf(); 715 716 // passed on request to parent 717 status_t ret = BView::Archive(archive, deep); 718 719 const_cast<CalcView*>(this)->AddChild(fExpressionTextView); 720 721 // save app signature for replicant add-on loading 722 if (ret == B_OK) 723 ret = archive->AddString("add_on", kSignature); 724 725 // save all the options 726 if (ret == B_OK) 727 ret = SaveSettings(archive); 728 729 // add class info last 730 if (ret == B_OK) 731 ret = archive->AddString("class", "CalcView"); 732 733 return ret; 734 } 735 736 737 void 738 CalcView::Cut() 739 { 740 Copy(); // copy data to clipboard 741 fExpressionTextView->Clear(); // remove data 742 } 743 744 745 void 746 CalcView::Copy() 747 { 748 // access system clipboard 749 if (be_clipboard->Lock()) { 750 be_clipboard->Clear(); 751 BMessage* clipper = be_clipboard->Data(); 752 clipper->what = B_MIME_DATA; 753 // TODO: should check return for errors! 754 BString expression = fExpressionTextView->Text(); 755 clipper->AddData("text/plain", B_MIME_TYPE, 756 expression.String(), expression.Length()); 757 //clipper->PrintToStream(); 758 be_clipboard->Commit(); 759 be_clipboard->Unlock(); 760 } 761 } 762 763 764 void 765 CalcView::Paste(BMessage* message) 766 { 767 // handle color drops first 768 // read incoming color 769 const rgb_color* dropColor = NULL; 770 ssize_t dataSize; 771 if (message->FindData("RGBColor", B_RGB_COLOR_TYPE, 772 (const void**)&dropColor, &dataSize) == B_OK 773 && dataSize == sizeof(rgb_color)) { 774 775 // calculate view relative drop point 776 BPoint dropPoint = ConvertFromScreen(message->DropPoint()); 777 778 // calculate current keypad area 779 float sizeDisp = fHeight * kDisplayScaleY; 780 BRect keypadRect(0.0, sizeDisp, fWidth, fHeight); 781 782 // check location of color drop 783 if (keypadRect.Contains(dropPoint) && dropColor != NULL) { 784 fBaseColor = *dropColor; 785 fHasCustomBaseColor = 786 fBaseColor != ui_color(B_PANEL_BACKGROUND_COLOR); 787 _Colorize(); 788 // redraw 789 Invalidate(); 790 } 791 792 } else { 793 // look for text/plain MIME data 794 const char* text; 795 ssize_t numBytes; 796 if (message->FindData("text/plain", B_MIME_TYPE, 797 (const void**)&text, &numBytes) == B_OK) { 798 BString temp; 799 temp.Append(text, numBytes); 800 fExpressionTextView->Insert(temp.String()); 801 } 802 } 803 } 804 805 806 status_t 807 CalcView::SaveSettings(BMessage* archive) const 808 { 809 status_t ret = archive ? B_OK : B_BAD_VALUE; 810 811 // record grid dimensions 812 if (ret == B_OK) 813 ret = archive->AddInt16("cols", fColumns); 814 815 if (ret == B_OK) 816 ret = archive->AddInt16("rows", fRows); 817 818 // record color scheme 819 if (ret == B_OK) { 820 ret = archive->AddData("rgbBaseColor", B_RGB_COLOR_TYPE, 821 &fBaseColor, sizeof(rgb_color)); 822 } 823 824 if (ret == B_OK) { 825 ret = archive->AddData("rgbDisplay", B_RGB_COLOR_TYPE, 826 &fExpressionBGColor, sizeof(rgb_color)); 827 } 828 829 // record current options 830 if (ret == B_OK) 831 ret = fOptions->SaveSettings(archive); 832 833 // record display text 834 if (ret == B_OK) 835 ret = archive->AddString("displayText", fExpressionTextView->Text()); 836 837 // record expression history 838 if (ret == B_OK) 839 ret = fExpressionTextView->SaveSettings(archive); 840 841 // record calculator description 842 if (ret == B_OK) 843 ret = archive->AddString("calcDesc", fKeypadDescription); 844 845 return ret; 846 } 847 848 849 void 850 CalcView::Evaluate() 851 { 852 if (fExpressionTextView->TextLength() == 0) { 853 beep(); 854 return; 855 } 856 857 fEvaluateThread = spawn_thread(_EvaluateThread, "Evaluate Thread", 858 B_LOW_PRIORITY, this); 859 if (fEvaluateThread < B_OK) { 860 // failed to create evaluate thread, error out 861 fExpressionTextView->SetText(strerror(fEvaluateThread)); 862 return; 863 } 864 865 _AudioFeedback(false); 866 _SetEnabled(false); 867 // Disable input while we evaluate 868 869 status_t threadStatus = resume_thread(fEvaluateThread); 870 if (threadStatus != B_OK) { 871 // evaluate thread failed to start, error out 872 fExpressionTextView->SetText(strerror(threadStatus)); 873 _SetEnabled(true); 874 return; 875 } 876 877 if (fEvaluateMessageRunner == NULL) { 878 BMessage message(kMsgCalculating); 879 fEvaluateMessageRunner = new (std::nothrow) BMessageRunner( 880 BMessenger(this), &message, kCalculatingInterval, 1); 881 status_t runnerStatus = fEvaluateMessageRunner->InitCheck(); 882 if (runnerStatus != B_OK) 883 printf("Evaluate Message Runner: %s\n", strerror(runnerStatus)); 884 } 885 } 886 887 888 void 889 CalcView::FlashKey(const char* bytes, int32 numBytes) 890 { 891 BString temp; 892 temp.Append(bytes, numBytes); 893 int32 key = _KeyForLabel(temp.String()); 894 if (key >= 0) 895 _FlashKey(key, FLAGS_FLASH_KEY); 896 } 897 898 899 void 900 CalcView::ToggleAutoNumlock(void) 901 { 902 fOptions->auto_num_lock = !fOptions->auto_num_lock; 903 fAutoNumlockItem->SetMarked(fOptions->auto_num_lock); 904 } 905 906 907 void 908 CalcView::ToggleAudioFeedback(void) 909 { 910 fOptions->audio_feedback = !fOptions->audio_feedback; 911 fAudioFeedbackItem->SetMarked(fOptions->audio_feedback); 912 } 913 914 915 void 916 CalcView::SetDegreeMode(bool degrees) 917 { 918 fOptions->degree_mode = degrees; 919 fAngleModeRadianItem->SetMarked(!degrees); 920 fAngleModeDegreeItem->SetMarked(degrees); 921 } 922 923 924 void 925 CalcView::SetKeypadMode(uint8 mode) 926 { 927 if (_IsEmbedded()) 928 return; 929 930 BWindow* window = Window(); 931 if (window == NULL) 932 return; 933 934 if (fOptions->keypad_mode == mode) 935 return; 936 937 fOptions->keypad_mode = mode; 938 _MarkKeypadItems(fOptions->keypad_mode); 939 940 float width = fWidth; 941 float height = fHeight; 942 943 switch (fOptions->keypad_mode) { 944 case KEYPAD_MODE_COMPACT: 945 { 946 if (window->Bounds() == Frame()) { 947 window->SetSizeLimits(kMinimumWidthCompact, 948 kMaximumWidthCompact, kMinimumHeightCompact, 949 kMaximumHeightCompact); 950 window->ResizeTo(width, height * kDisplayScaleY); 951 } else 952 ResizeTo(width, height * kDisplayScaleY); 953 954 break; 955 } 956 957 case KEYPAD_MODE_SCIENTIFIC: 958 { 959 free(fKeypadDescription); 960 fKeypadDescription = strdup(kKeypadDescriptionScientific); 961 fRows = 8; 962 _ParseCalcDesc(fKeypadDescription); 963 964 window->SetSizeLimits(kMinimumWidthScientific, 965 kMaximumWidthScientific, kMinimumHeightScientific, 966 kMaximumHeightScientific); 967 968 if (width < kMinimumWidthScientific) 969 width = kMinimumWidthScientific; 970 else if (width > kMaximumWidthScientific) 971 width = kMaximumWidthScientific; 972 973 if (height < kMinimumHeightScientific) 974 height = kMinimumHeightScientific; 975 else if (height > kMaximumHeightScientific) 976 height = kMaximumHeightScientific; 977 978 if (width != fWidth || height != fHeight) 979 ResizeTo(width, height); 980 else 981 Invalidate(); 982 983 break; 984 } 985 986 case KEYPAD_MODE_BASIC: 987 default: 988 { 989 free(fKeypadDescription); 990 fKeypadDescription = strdup(kKeypadDescriptionBasic); 991 fRows = 4; 992 _ParseCalcDesc(fKeypadDescription); 993 994 window->SetSizeLimits(kMinimumWidthBasic, kMaximumWidthBasic, 995 kMinimumHeightBasic, kMaximumHeightBasic); 996 997 if (width < kMinimumWidthBasic) 998 width = kMinimumWidthBasic; 999 else if (width > kMaximumWidthBasic) 1000 width = kMaximumWidthBasic; 1001 1002 if (height < kMinimumHeightBasic) 1003 height = kMinimumHeightBasic; 1004 else if (height > kMaximumHeightBasic) 1005 height = kMaximumHeightBasic; 1006 1007 if (width != fWidth || height != fHeight) 1008 ResizeTo(width, height); 1009 else 1010 Invalidate(); 1011 } 1012 } 1013 } 1014 1015 1016 // #pragma mark - 1017 1018 1019 /*static*/ status_t 1020 CalcView::_EvaluateThread(void* data) 1021 { 1022 CalcView* calcView = reinterpret_cast<CalcView*>(data); 1023 if (calcView == NULL) 1024 return B_BAD_TYPE; 1025 1026 BMessenger messenger(calcView); 1027 if (!messenger.IsValid()) 1028 return B_BAD_VALUE; 1029 1030 BString result; 1031 status_t status = acquire_sem(calcView->fEvaluateSemaphore); 1032 if (status == B_OK) { 1033 ExpressionParser parser; 1034 parser.SetDegreeMode(calcView->fOptions->degree_mode); 1035 BString expression(calcView->fExpressionTextView->Text()); 1036 try { 1037 result = parser.Evaluate(expression.String()); 1038 } catch (ParseException e) { 1039 result << e.message.String() << " at " << (e.position + 1); 1040 status = B_ERROR; 1041 } 1042 release_sem(calcView->fEvaluateSemaphore); 1043 } else 1044 result = strerror(status); 1045 1046 BMessage message(kMsgDoneEvaluating); 1047 message.AddString(status == B_OK ? "value" : "error", result.String()); 1048 messenger.SendMessage(&message); 1049 1050 return status; 1051 } 1052 1053 1054 void 1055 CalcView::_Init(BMessage* settings) 1056 { 1057 // create expression text view 1058 fExpressionTextView = new ExpressionTextView(_ExpressionRect(), this); 1059 AddChild(fExpressionTextView); 1060 1061 // read data from archive 1062 _LoadSettings(settings); 1063 1064 // fetch the calc icon for compact view 1065 _FetchAppIcon(fCalcIcon); 1066 1067 fEvaluateSemaphore = create_sem(1, "Evaluate Semaphore"); 1068 } 1069 1070 1071 status_t 1072 CalcView::_LoadSettings(BMessage* archive) 1073 { 1074 if (!archive) 1075 return B_BAD_VALUE; 1076 1077 // record calculator description 1078 const char* calcDesc; 1079 if (archive->FindString("calcDesc", &calcDesc) < B_OK) 1080 calcDesc = kKeypadDescriptionBasic; 1081 1082 // save calculator description for reference 1083 free(fKeypadDescription); 1084 fKeypadDescription = strdup(calcDesc); 1085 1086 // read grid dimensions 1087 if (archive->FindInt16("cols", &fColumns) < B_OK) 1088 fColumns = 5; 1089 if (archive->FindInt16("rows", &fRows) < B_OK) 1090 fRows = 4; 1091 1092 // read color scheme 1093 const rgb_color* color; 1094 ssize_t size; 1095 if (archive->FindData("rgbBaseColor", B_RGB_COLOR_TYPE, 1096 (const void**)&color, &size) < B_OK 1097 || size != sizeof(rgb_color)) { 1098 fBaseColor = ui_color(B_PANEL_BACKGROUND_COLOR); 1099 puts("Missing rgbBaseColor from CalcView archive!\n"); 1100 } else 1101 fBaseColor = *color; 1102 1103 if (archive->FindData("rgbDisplay", B_RGB_COLOR_TYPE, 1104 (const void**)&color, &size) < B_OK 1105 || size != sizeof(rgb_color)) { 1106 fExpressionBGColor = (rgb_color){ 0, 0, 0, 255 }; 1107 puts("Missing rgbBaseColor from CalcView archive!\n"); 1108 } else { 1109 fExpressionBGColor = *color; 1110 } 1111 1112 fHasCustomBaseColor = fBaseColor != ui_color(B_PANEL_BACKGROUND_COLOR); 1113 1114 // load options 1115 fOptions->LoadSettings(archive); 1116 1117 // load display text 1118 const char* display; 1119 if (archive->FindString("displayText", &display) < B_OK) { 1120 puts("Missing expression text from CalcView archive.\n"); 1121 } else { 1122 // init expression text 1123 fExpressionTextView->SetText(display); 1124 } 1125 1126 // load expression history 1127 fExpressionTextView->LoadSettings(archive); 1128 1129 // parse calculator description 1130 _ParseCalcDesc(fKeypadDescription); 1131 1132 // colorize based on base color. 1133 _Colorize(); 1134 1135 return B_OK; 1136 } 1137 1138 1139 void 1140 CalcView::_ParseCalcDesc(const char* keypadDescription) 1141 { 1142 // TODO: should calculate dimensions from desc here! 1143 fKeypad = new CalcKey[fRows * fColumns]; 1144 1145 // scan through calculator description and assemble keypad 1146 CalcKey* key = fKeypad; 1147 const char* p = keypadDescription; 1148 1149 while (*p != 0) { 1150 // copy label 1151 char* l = key->label; 1152 while (!isspace(*p)) 1153 *l++ = *p++; 1154 *l = '\0'; 1155 1156 // set code 1157 if (strcmp(key->label, "=") == 0) 1158 strlcpy(key->code, "\n", sizeof(key->code)); 1159 else 1160 strlcpy(key->code, key->label, sizeof(key->code)); 1161 1162 // set keymap 1163 if (strlen(key->label) == 1) 1164 strlcpy(key->keymap, key->label, sizeof(key->keymap)); 1165 else 1166 *key->keymap = '\0'; 1167 1168 key->flags = 0; 1169 1170 // add this to the expression text view, so that it 1171 // will forward the respective KeyDown event to us 1172 fExpressionTextView->AddKeypadLabel(key->label); 1173 1174 // advance 1175 while (isspace(*p)) 1176 ++p; 1177 key++; 1178 } 1179 } 1180 1181 1182 void 1183 CalcView::_PressKey(int key) 1184 { 1185 if (!fEnabled) 1186 return; 1187 1188 assert(key < (fRows * fColumns)); 1189 assert(key >= 0); 1190 1191 if (strcmp(fKeypad[key].label, "BS") == 0) { 1192 // BS means backspace 1193 fExpressionTextView->BackSpace(); 1194 } else if (strcmp(fKeypad[key].label, "C") == 0) { 1195 // C means clear 1196 fExpressionTextView->Clear(); 1197 } else if (strcmp(fKeypad[key].label, "acos") == 0 1198 || strcmp(fKeypad[key].label, "asin") == 0 1199 || strcmp(fKeypad[key].label, "atan") == 0 1200 || strcmp(fKeypad[key].label, "cbrt") == 0 1201 || strcmp(fKeypad[key].label, "ceil") == 0 1202 || strcmp(fKeypad[key].label, "cos") == 0 1203 || strcmp(fKeypad[key].label, "cosh") == 0 1204 || strcmp(fKeypad[key].label, "exp") == 0 1205 || strcmp(fKeypad[key].label, "floor") == 0 1206 || strcmp(fKeypad[key].label, "log") == 0 1207 || strcmp(fKeypad[key].label, "ln") == 0 1208 || strcmp(fKeypad[key].label, "sin") == 0 1209 || strcmp(fKeypad[key].label, "sinh") == 0 1210 || strcmp(fKeypad[key].label, "sqrt") == 0 1211 || strcmp(fKeypad[key].label, "tan") == 0 1212 || strcmp(fKeypad[key].label, "tanh") == 0) { 1213 int32 labelLen = strlen(fKeypad[key].label); 1214 int32 startSelection = 0; 1215 int32 endSelection = 0; 1216 fExpressionTextView->GetSelection(&startSelection, &endSelection); 1217 if (endSelection > startSelection) { 1218 // There is selected text, put it inbetween the parens 1219 fExpressionTextView->Insert(startSelection, fKeypad[key].label, 1220 labelLen); 1221 fExpressionTextView->Insert(startSelection + labelLen, "(", 1); 1222 fExpressionTextView->Insert(endSelection + labelLen + 1, ")", 1); 1223 // Put the cursor after the ending paren 1224 // Need to cast to BTextView because Select() is protected 1225 // in the InputTextView class 1226 static_cast<BTextView*>(fExpressionTextView)->Select( 1227 endSelection + labelLen + 2, endSelection + labelLen + 2); 1228 } else { 1229 // There is no selected text, insert at the cursor location 1230 fExpressionTextView->Insert(fKeypad[key].label); 1231 fExpressionTextView->Insert("()"); 1232 // Put the cursor inside the parens so you can enter an argument 1233 // Need to cast to BTextView because Select() is protected 1234 // in the InputTextView class 1235 static_cast<BTextView*>(fExpressionTextView)->Select( 1236 endSelection + labelLen + 1, endSelection + labelLen + 1); 1237 } 1238 } else { 1239 // check for evaluation order 1240 if (fKeypad[key].code[0] == '\n') { 1241 fExpressionTextView->ApplyChanges(); 1242 } else { 1243 // insert into expression text 1244 fExpressionTextView->Insert(fKeypad[key].code); 1245 } 1246 } 1247 1248 _AudioFeedback(true); 1249 } 1250 1251 1252 void 1253 CalcView::_PressKey(const char* label) 1254 { 1255 int32 key = _KeyForLabel(label); 1256 if (key >= 0) 1257 _PressKey(key); 1258 } 1259 1260 1261 int32 1262 CalcView::_KeyForLabel(const char* label) const 1263 { 1264 int keys = fRows * fColumns; 1265 for (int i = 0; i < keys; i++) { 1266 if (strcmp(fKeypad[i].label, label) == 0) { 1267 return i; 1268 } 1269 } 1270 return -1; 1271 } 1272 1273 1274 void 1275 CalcView::_FlashKey(int32 key, uint32 flashFlags) 1276 { 1277 if (fOptions->keypad_mode == KEYPAD_MODE_COMPACT) 1278 return; 1279 1280 if (flashFlags != 0) 1281 fKeypad[key].flags |= flashFlags; 1282 else 1283 fKeypad[key].flags = 0; 1284 Invalidate(); 1285 1286 if (fKeypad[key].flags == FLAGS_FLASH_KEY) { 1287 BMessage message(MSG_UNFLASH_KEY); 1288 message.AddInt32("key", key); 1289 BMessageRunner::StartSending(BMessenger(this), &message, 1290 kFlashOnOffInterval, 1); 1291 } 1292 } 1293 1294 1295 void 1296 CalcView::_AudioFeedback(bool inBackGround) 1297 { 1298 // TODO: Use beep events... This interface is not implemented on Haiku 1299 // anyways... 1300 #if 0 1301 if (fOptions->audio_feedback) { 1302 BEntry zimp("key.AIFF"); 1303 entry_ref zimp_ref; 1304 zimp.GetRef(&zimp_ref); 1305 play_sound(&zimp_ref, true, false, inBackGround); 1306 } 1307 #endif 1308 } 1309 1310 1311 void 1312 CalcView::_Colorize() 1313 { 1314 // calculate light and dark color from base color 1315 fLightColor.red = (uint8)(fBaseColor.red * 1.25); 1316 fLightColor.green = (uint8)(fBaseColor.green * 1.25); 1317 fLightColor.blue = (uint8)(fBaseColor.blue * 1.25); 1318 fLightColor.alpha = 255; 1319 1320 fDarkColor.red = (uint8)(fBaseColor.red * 0.75); 1321 fDarkColor.green = (uint8)(fBaseColor.green * 0.75); 1322 fDarkColor.blue = (uint8)(fBaseColor.blue * 0.75); 1323 fDarkColor.alpha = 255; 1324 1325 // keypad text color 1326 if (fBaseColor.Brightness() > 100) 1327 fButtonTextColor = (rgb_color){ 0, 0, 0, 255 }; 1328 else 1329 fButtonTextColor = (rgb_color){ 255, 255, 255, 255 }; 1330 1331 // expression text color 1332 if (fExpressionBGColor.Brightness() > 100) 1333 fExpressionTextColor = (rgb_color){ 0, 0, 0, 255 }; 1334 else 1335 fExpressionTextColor = (rgb_color){ 255, 255, 255, 255 }; 1336 } 1337 1338 1339 void 1340 CalcView::_CreatePopUpMenu(bool addKeypadModeMenuItems) 1341 { 1342 // construct items 1343 fAutoNumlockItem = new BMenuItem(B_TRANSLATE("Enable Num Lock on startup"), 1344 new BMessage(MSG_OPTIONS_AUTO_NUM_LOCK)); 1345 fAudioFeedbackItem = new BMenuItem(B_TRANSLATE("Audio Feedback"), 1346 new BMessage(MSG_OPTIONS_AUDIO_FEEDBACK)); 1347 fAngleModeRadianItem = new BMenuItem(B_TRANSLATE("Radians"), 1348 new BMessage(MSG_OPTIONS_ANGLE_MODE_RADIAN)); 1349 fAngleModeDegreeItem = new BMenuItem(B_TRANSLATE("Degrees"), 1350 new BMessage(MSG_OPTIONS_ANGLE_MODE_DEGREE)); 1351 if (addKeypadModeMenuItems) { 1352 fKeypadModeCompactItem = new BMenuItem(B_TRANSLATE("Compact"), 1353 new BMessage(MSG_OPTIONS_KEYPAD_MODE_COMPACT), '0'); 1354 fKeypadModeBasicItem = new BMenuItem(B_TRANSLATE("Basic"), 1355 new BMessage(MSG_OPTIONS_KEYPAD_MODE_BASIC), '1'); 1356 fKeypadModeScientificItem = new BMenuItem(B_TRANSLATE("Scientific"), 1357 new BMessage(MSG_OPTIONS_KEYPAD_MODE_SCIENTIFIC), '2'); 1358 } 1359 1360 // apply current settings 1361 fAutoNumlockItem->SetMarked(fOptions->auto_num_lock); 1362 fAudioFeedbackItem->SetMarked(fOptions->audio_feedback); 1363 fAngleModeRadianItem->SetMarked(!fOptions->degree_mode); 1364 fAngleModeDegreeItem->SetMarked(fOptions->degree_mode); 1365 1366 // construct menu 1367 fPopUpMenu = new BPopUpMenu("pop-up", false, false); 1368 1369 fPopUpMenu->AddItem(fAutoNumlockItem); 1370 // TODO: Enable this when we use beep events which can be configured 1371 // in the Sounds preflet. 1372 //fPopUpMenu->AddItem(fAudioFeedbackItem); 1373 fPopUpMenu->AddSeparatorItem(); 1374 fPopUpMenu->AddItem(fAngleModeRadianItem); 1375 fPopUpMenu->AddItem(fAngleModeDegreeItem); 1376 if (addKeypadModeMenuItems) { 1377 fPopUpMenu->AddSeparatorItem(); 1378 fPopUpMenu->AddItem(fKeypadModeCompactItem); 1379 fPopUpMenu->AddItem(fKeypadModeBasicItem); 1380 fPopUpMenu->AddItem(fKeypadModeScientificItem); 1381 _MarkKeypadItems(fOptions->keypad_mode); 1382 } 1383 } 1384 1385 1386 BRect 1387 CalcView::_ExpressionRect() const 1388 { 1389 BRect r(0.0, 0.0, fWidth, fHeight); 1390 if (fOptions->keypad_mode != KEYPAD_MODE_COMPACT) { 1391 r.bottom = floorf(fHeight * kDisplayScaleY) + 1; 1392 } 1393 return r; 1394 } 1395 1396 1397 BRect 1398 CalcView::_KeypadRect() const 1399 { 1400 BRect r(0.0, 0.0, -1.0, -1.0); 1401 if (fOptions->keypad_mode != KEYPAD_MODE_COMPACT) { 1402 r.right = fWidth; 1403 r.bottom = fHeight; 1404 r.top = floorf(fHeight * kDisplayScaleY); 1405 } 1406 return r; 1407 } 1408 1409 1410 void 1411 CalcView::_MarkKeypadItems(uint8 keypad_mode) 1412 { 1413 switch (keypad_mode) { 1414 case KEYPAD_MODE_COMPACT: 1415 fKeypadModeCompactItem->SetMarked(true); 1416 fKeypadModeBasicItem->SetMarked(false); 1417 fKeypadModeScientificItem->SetMarked(false); 1418 break; 1419 1420 case KEYPAD_MODE_SCIENTIFIC: 1421 fKeypadModeCompactItem->SetMarked(false); 1422 fKeypadModeBasicItem->SetMarked(false); 1423 fKeypadModeScientificItem->SetMarked(true); 1424 break; 1425 1426 default: // KEYPAD_MODE_BASIC is the default 1427 fKeypadModeCompactItem->SetMarked(false); 1428 fKeypadModeBasicItem->SetMarked(true); 1429 fKeypadModeScientificItem->SetMarked(false); 1430 } 1431 } 1432 1433 1434 void 1435 CalcView::_FetchAppIcon(BBitmap* into) 1436 { 1437 entry_ref appRef; 1438 status_t status = be_roster->FindApp(kSignature, &appRef); 1439 if (status == B_OK) { 1440 BFile file(&appRef, B_READ_ONLY); 1441 BAppFileInfo appInfo(&file); 1442 status = appInfo.GetIcon(into, B_MINI_ICON); 1443 } 1444 if (status != B_OK) 1445 memset(into->Bits(), 0, into->BitsLength()); 1446 } 1447 1448 1449 // Returns whether or not CalcView is embedded somewhere, most likely 1450 // the Desktop 1451 bool 1452 CalcView::_IsEmbedded() 1453 { 1454 return Parent() != NULL && (Parent()->Flags() & B_DRAW_ON_CHILDREN) != 0; 1455 } 1456 1457 1458 void 1459 CalcView::_SetEnabled(bool enable) 1460 { 1461 fEnabled = enable; 1462 fExpressionTextView->MakeSelectable(enable); 1463 fExpressionTextView->MakeEditable(enable); 1464 } 1465