1 /* 2 * Copyright (C) 2009, 2010, 2011, 2012, 2013, 2015 Nicolas Bonnefon 3 * and other contributors 4 * 5 * This file is part of glogg. 6 * 7 * glogg is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation, either version 3 of the License, or 10 * (at your option) any later version. 11 * 12 * glogg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with glogg. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 // This file implements the AbstractLogView base class. 22 // Most of the actual drawing and event management common to the two views 23 // is implemented in this class. The class only calls protected virtual 24 // functions when view specific behaviour is desired, using the template 25 // pattern. 26 27 #include <iostream> 28 #include <cassert> 29 30 #include <QApplication> 31 #include <QClipboard> 32 #include <QFile> 33 #include <QRect> 34 #include <QPaintEvent> 35 #include <QPainter> 36 #include <QFontMetrics> 37 #include <QScrollBar> 38 #include <QMenu> 39 #include <QAction> 40 #include <QtCore> 41 #include <QGestureEvent> 42 43 #include "log.h" 44 45 #include "persistentinfo.h" 46 #include "filterset.h" 47 #include "logmainview.h" 48 #include "quickfind.h" 49 #include "quickfindpattern.h" 50 #include "overview.h" 51 #include "configuration.h" 52 53 namespace { 54 int mapPullToFollowLength( int length ); 55 }; 56 57 namespace { 58 59 int countDigits( quint64 n ) 60 { 61 if (n == 0) 62 return 1; 63 64 // We must force the compiler to not store intermediate results 65 // in registers because this causes incorrect result on some 66 // systems under optimizations level >0. For the skeptical: 67 // 68 // #include <math.h> 69 // #include <stdlib.h> 70 // int main(int argc, char **argv) { 71 // (void)argc; 72 // long long int n = atoll(argv[1]); 73 // return floor( log( n ) / log( 10 ) + 1 ); 74 // } 75 // 76 // This is on Thinkpad T60 (Genuine Intel(R) CPU T2300). 77 // $ g++ --version 78 // g++ (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3 79 // $ g++ -O0 -Wall -W -o math math.cpp -lm; ./math 10; echo $? 80 // 2 81 // $ g++ -O1 -Wall -W -o math math.cpp -lm; ./math 10; echo $? 82 // 1 83 // 84 // A fix is to (1) explicitly place intermediate results in 85 // variables *and* (2) [A] mark them as 'volatile', or [B] pass 86 // -ffloat-store to g++ (note that approach [A] is more portable). 87 88 volatile qreal ln_n = qLn( n ); 89 volatile qreal ln_10 = qLn( 10 ); 90 volatile qreal lg_n = ln_n / ln_10; 91 volatile qreal lg_n_1 = lg_n + 1; 92 volatile qreal fl_lg_n_1 = qFloor( lg_n_1 ); 93 94 return fl_lg_n_1; 95 } 96 97 } // anon namespace 98 99 100 LineChunk::LineChunk( int first_col, int last_col, ChunkType type ) 101 { 102 // LOG(logDEBUG) << "new LineChunk: " << first_col << " " << last_col; 103 104 start_ = first_col; 105 end_ = last_col; 106 type_ = type; 107 } 108 109 QList<LineChunk> LineChunk::select( int sel_start, int sel_end ) const 110 { 111 QList<LineChunk> list; 112 113 if ( ( sel_start < start_ ) && ( sel_end < start_ ) ) { 114 // Selection BEFORE this chunk: no change 115 list << LineChunk( *this ); 116 } 117 else if ( sel_start > end_ ) { 118 // Selection AFTER this chunk: no change 119 list << LineChunk( *this ); 120 } 121 else /* if ( ( sel_start >= start_ ) && ( sel_end <= end_ ) ) */ 122 { 123 // We only want to consider what's inside THIS chunk 124 sel_start = qMax( sel_start, start_ ); 125 sel_end = qMin( sel_end, end_ ); 126 127 if ( sel_start > start_ ) 128 list << LineChunk( start_, sel_start - 1, type_ ); 129 list << LineChunk( sel_start, sel_end, Selected ); 130 if ( sel_end < end_ ) 131 list << LineChunk( sel_end + 1, end_, type_ ); 132 } 133 134 return list; 135 } 136 137 inline void LineDrawer::addChunk( int first_col, int last_col, 138 QColor fore, QColor back ) 139 { 140 if ( first_col < 0 ) 141 first_col = 0; 142 int length = last_col - first_col + 1; 143 if ( length > 0 ) { 144 list << Chunk ( first_col, length, fore, back ); 145 } 146 } 147 148 inline void LineDrawer::addChunk( const LineChunk& chunk, 149 QColor fore, QColor back ) 150 { 151 int first_col = chunk.start(); 152 int last_col = chunk.end(); 153 154 addChunk( first_col, last_col, fore, back ); 155 } 156 157 inline void LineDrawer::draw( QPainter& painter, 158 int initialXPos, int initialYPos, 159 int line_width, const QString& line, 160 int leftExtraBackgroundPx ) 161 { 162 QFontMetrics fm = painter.fontMetrics(); 163 const int fontHeight = fm.height(); 164 const int fontAscent = fm.ascent(); 165 // For some reason on Qt 4.8.2 for Win, maxWidth() is wrong but the 166 // following give the right result, not sure why: 167 const int fontWidth = fm.width( QChar('a') ); 168 169 int xPos = initialXPos; 170 int yPos = initialYPos; 171 172 foreach ( Chunk chunk, list ) { 173 // Draw each chunk 174 // LOG(logDEBUG) << "Chunk: " << chunk.start() << " " << chunk.length(); 175 QString cutline = line.mid( chunk.start(), chunk.length() ); 176 const int chunk_width = cutline.length() * fontWidth; 177 if ( xPos == initialXPos ) { 178 // First chunk, we extend the left background a bit, 179 // it looks prettier. 180 painter.fillRect( xPos - leftExtraBackgroundPx, yPos, 181 chunk_width + leftExtraBackgroundPx, 182 fontHeight, chunk.backColor() ); 183 } 184 else { 185 // other chunks... 186 painter.fillRect( xPos, yPos, chunk_width, 187 fontHeight, chunk.backColor() ); 188 } 189 painter.setPen( chunk.foreColor() ); 190 painter.drawText( xPos, yPos + fontAscent, cutline ); 191 xPos += chunk_width; 192 } 193 194 // Draw the empty block at the end of the line 195 int blank_width = line_width - xPos; 196 197 if ( blank_width > 0 ) 198 painter.fillRect( xPos, yPos, blank_width, fontHeight, backColor_ ); 199 } 200 201 const int DigitsBuffer::timeout_ = 2000; 202 203 DigitsBuffer::DigitsBuffer() : QObject() 204 { 205 } 206 207 void DigitsBuffer::reset() 208 { 209 LOG(logDEBUG) << "DigitsBuffer::reset()"; 210 211 timer_.stop(); 212 digits_.clear(); 213 } 214 215 void DigitsBuffer::add( char character ) 216 { 217 LOG(logDEBUG) << "DigitsBuffer::add()"; 218 219 digits_.append( QChar( character ) ); 220 timer_.start( timeout_ , this ); 221 } 222 223 int DigitsBuffer::content() 224 { 225 int result = digits_.toInt(); 226 reset(); 227 228 return result; 229 } 230 231 void DigitsBuffer::timerEvent( QTimerEvent* event ) 232 { 233 if ( event->timerId() == timer_.timerId() ) { 234 reset(); 235 } 236 else { 237 QObject::timerEvent( event ); 238 } 239 } 240 241 AbstractLogView::AbstractLogView(const AbstractLogData* newLogData, 242 const QuickFindPattern* const quickFindPattern, QWidget* parent) : 243 QAbstractScrollArea( parent ), 244 followElasticHook_( HOOK_THRESHOLD ), 245 lineNumbersVisible_( false ), 246 selectionStartPos_(), 247 selectionCurrentEndPos_(), 248 autoScrollTimer_(), 249 selection_(), 250 quickFindPattern_( quickFindPattern ), 251 quickFind_( newLogData, &selection_, quickFindPattern ) 252 { 253 logData = newLogData; 254 255 followMode_ = false; 256 257 selectionStarted_ = false; 258 markingClickInitiated_ = false; 259 260 firstLine = 0; 261 lastLineAligned = false; 262 firstCol = 0; 263 264 overview_ = NULL; 265 overviewWidget_ = NULL; 266 267 // Display 268 leftMarginPx_ = 0; 269 270 // Fonts (sensible default for overview widget) 271 charWidth_ = 1; 272 charHeight_ = 10; 273 274 // Create the viewport QWidget 275 setViewport( 0 ); 276 277 // Hovering 278 setMouseTracking( true ); 279 lastHoveredLine_ = -1; 280 281 // Init the popup menu 282 createMenu(); 283 284 // Signals 285 connect( quickFindPattern_, SIGNAL( patternUpdated() ), 286 this, SLOT ( handlePatternUpdated() ) ); 287 connect( &quickFind_, SIGNAL( notify( const QFNotification& ) ), 288 this, SIGNAL( notifyQuickFind( const QFNotification& ) ) ); 289 connect( &quickFind_, SIGNAL( clearNotification() ), 290 this, SIGNAL( clearQuickFindNotification() ) ); 291 connect( &followElasticHook_, SIGNAL( lengthChanged() ), 292 this, SLOT( repaint() ) ); 293 connect( &followElasticHook_, SIGNAL( hooked( bool ) ), 294 this, SIGNAL( followModeChanged( bool ) ) ); 295 } 296 297 AbstractLogView::~AbstractLogView() 298 { 299 } 300 301 302 // 303 // Received events 304 // 305 306 void AbstractLogView::changeEvent( QEvent* changeEvent ) 307 { 308 QAbstractScrollArea::changeEvent( changeEvent ); 309 310 // Stop the timer if the widget becomes inactive 311 if ( changeEvent->type() == QEvent::ActivationChange ) { 312 if ( ! isActiveWindow() ) 313 autoScrollTimer_.stop(); 314 } 315 viewport()->update(); 316 } 317 318 void AbstractLogView::mousePressEvent( QMouseEvent* mouseEvent ) 319 { 320 static std::shared_ptr<Configuration> config = 321 Persistent<Configuration>( "settings" ); 322 323 if ( mouseEvent->button() == Qt::LeftButton ) 324 { 325 int line = convertCoordToLine( mouseEvent->y() ); 326 327 if ( mouseEvent->modifiers() & Qt::ShiftModifier ) 328 { 329 selection_.selectRangeFromPrevious( line ); 330 emit updateLineNumber( line ); 331 update(); 332 } 333 else 334 { 335 if ( mouseEvent->x() < bulletZoneWidthPx_ ) { 336 // Mark a line if it is clicked in the left margin 337 // (only if click and release in the same area) 338 markingClickInitiated_ = true; 339 markingClickLine_ = line; 340 } 341 else { 342 // Select the line, and start a selection 343 if ( line < logData->getNbLine() ) { 344 selection_.selectLine( line ); 345 emit updateLineNumber( line ); 346 emit newSelection( line ); 347 } 348 349 // Remember the click in case we're starting a selection 350 selectionStarted_ = true; 351 selectionStartPos_ = convertCoordToFilePos( mouseEvent->pos() ); 352 selectionCurrentEndPos_ = selectionStartPos_; 353 } 354 } 355 356 // Invalidate our cache 357 textAreaCache_.invalid_ = true; 358 } 359 else if ( mouseEvent->button() == Qt::RightButton ) 360 { 361 // Prepare the popup depending on selection type 362 if ( selection_.isSingleLine() ) { 363 copyAction_->setText( "&Copy this line" ); 364 } 365 else { 366 copyAction_->setText( "&Copy" ); 367 copyAction_->setStatusTip( tr("Copy the selection") ); 368 } 369 370 if ( selection_.isPortion() ) { 371 findNextAction_->setEnabled( true ); 372 findPreviousAction_->setEnabled( true ); 373 addToSearchAction_->setEnabled( true ); 374 } 375 else { 376 findNextAction_->setEnabled( false ); 377 findPreviousAction_->setEnabled( false ); 378 addToSearchAction_->setEnabled( false ); 379 } 380 381 // "Add to search" only makes sense in regexp mode 382 if ( config->mainRegexpType() != ExtendedRegexp ) 383 addToSearchAction_->setEnabled( false ); 384 385 // Display the popup (blocking) 386 popupMenu_->exec( QCursor::pos() ); 387 } 388 389 emit activity(); 390 } 391 392 void AbstractLogView::mouseMoveEvent( QMouseEvent* mouseEvent ) 393 { 394 // Selection implementation 395 if ( selectionStarted_ ) 396 { 397 // Invalidate our cache 398 textAreaCache_.invalid_ = true; 399 400 QPoint thisEndPos = convertCoordToFilePos( mouseEvent->pos() ); 401 if ( thisEndPos != selectionCurrentEndPos_ ) 402 { 403 // Are we on a different line? 404 if ( selectionStartPos_.y() != thisEndPos.y() ) 405 { 406 if ( thisEndPos.y() != selectionCurrentEndPos_.y() ) 407 { 408 // This is a 'range' selection 409 selection_.selectRange( selectionStartPos_.y(), 410 thisEndPos.y() ); 411 emit updateLineNumber( thisEndPos.y() ); 412 update(); 413 } 414 } 415 // So we are on the same line. Are we moving horizontaly? 416 else if ( thisEndPos.x() != selectionCurrentEndPos_.x() ) 417 { 418 // This is a 'portion' selection 419 selection_.selectPortion( thisEndPos.y(), 420 selectionStartPos_.x(), thisEndPos.x() ); 421 update(); 422 } 423 // On the same line, and moving vertically then 424 else 425 { 426 // This is a 'line' selection 427 selection_.selectLine( thisEndPos.y() ); 428 emit updateLineNumber( thisEndPos.y() ); 429 update(); 430 } 431 selectionCurrentEndPos_ = thisEndPos; 432 433 // Do we need to scroll while extending the selection? 434 QRect visible = viewport()->rect(); 435 if ( visible.contains( mouseEvent->pos() ) ) 436 autoScrollTimer_.stop(); 437 else if ( ! autoScrollTimer_.isActive() ) 438 autoScrollTimer_.start( 100, this ); 439 } 440 } 441 else { 442 considerMouseHovering( mouseEvent->x(), mouseEvent->y() ); 443 } 444 } 445 446 void AbstractLogView::mouseReleaseEvent( QMouseEvent* mouseEvent ) 447 { 448 if ( markingClickInitiated_ ) { 449 markingClickInitiated_ = false; 450 int line = convertCoordToLine( mouseEvent->y() ); 451 if ( line == markingClickLine_ ) { 452 // Invalidate our cache 453 textAreaCache_.invalid_ = true; 454 455 emit markLine( line ); 456 } 457 } 458 else { 459 selectionStarted_ = false; 460 if ( autoScrollTimer_.isActive() ) 461 autoScrollTimer_.stop(); 462 updateGlobalSelection(); 463 } 464 } 465 466 void AbstractLogView::mouseDoubleClickEvent( QMouseEvent* mouseEvent ) 467 { 468 if ( mouseEvent->button() == Qt::LeftButton ) 469 { 470 // Invalidate our cache 471 textAreaCache_.invalid_ = true; 472 473 const QPoint pos = convertCoordToFilePos( mouseEvent->pos() ); 474 selectWordAtPosition( pos ); 475 } 476 477 emit activity(); 478 } 479 480 void AbstractLogView::timerEvent( QTimerEvent* timerEvent ) 481 { 482 if ( timerEvent->timerId() == autoScrollTimer_.timerId() ) { 483 QRect visible = viewport()->rect(); 484 const QPoint globalPos = QCursor::pos(); 485 const QPoint pos = viewport()->mapFromGlobal( globalPos ); 486 QMouseEvent ev( QEvent::MouseMove, pos, globalPos, Qt::LeftButton, 487 Qt::LeftButton, Qt::NoModifier ); 488 mouseMoveEvent( &ev ); 489 int deltaX = qMax( pos.x() - visible.left(), 490 visible.right() - pos.x() ) - visible.width(); 491 int deltaY = qMax( pos.y() - visible.top(), 492 visible.bottom() - pos.y() ) - visible.height(); 493 int delta = qMax( deltaX, deltaY ); 494 495 if ( delta >= 0 ) { 496 if ( delta < 7 ) 497 delta = 7; 498 int timeout = 4900 / ( delta * delta ); 499 autoScrollTimer_.start( timeout, this ); 500 501 if ( deltaX > 0 ) 502 horizontalScrollBar()->triggerAction( 503 pos.x() <visible.center().x() ? 504 QAbstractSlider::SliderSingleStepSub : 505 QAbstractSlider::SliderSingleStepAdd ); 506 507 if ( deltaY > 0 ) 508 verticalScrollBar()->triggerAction( 509 pos.y() <visible.center().y() ? 510 QAbstractSlider::SliderSingleStepSub : 511 QAbstractSlider::SliderSingleStepAdd ); 512 } 513 } 514 QAbstractScrollArea::timerEvent( timerEvent ); 515 } 516 517 void AbstractLogView::keyPressEvent( QKeyEvent* keyEvent ) 518 { 519 LOG(logDEBUG4) << "keyPressEvent received"; 520 bool controlModifier = (keyEvent->modifiers() & Qt::ControlModifier) == Qt::ControlModifier; 521 bool shiftModifier = (keyEvent->modifiers() & Qt::ShiftModifier) == Qt::ShiftModifier; 522 523 if ( keyEvent->key() == Qt::Key_Left ) 524 horizontalScrollBar()->triggerAction(QScrollBar::SliderPageStepSub); 525 else if ( keyEvent->key() == Qt::Key_Right ) 526 horizontalScrollBar()->triggerAction(QScrollBar::SliderPageStepAdd); 527 else if ( keyEvent->key() == Qt::Key_Home && !controlModifier) 528 jumpToStartOfLine(); 529 else if ( keyEvent->key() == Qt::Key_End && !controlModifier) 530 jumpToRightOfScreen(); 531 else if ( (keyEvent->key() == Qt::Key_PageDown && controlModifier) 532 || (keyEvent->key() == Qt::Key_End && controlModifier) ) 533 { 534 disableFollow(); // duplicate of 'G' action. 535 selection_.selectLine( logData->getNbLine() - 1 ); 536 emit updateLineNumber( logData->getNbLine() - 1 ); 537 jumpToBottom(); 538 } 539 else if ( (keyEvent->key() == Qt::Key_PageUp && controlModifier) 540 || (keyEvent->key() == Qt::Key_Home && controlModifier) ) 541 { 542 disableFollow(); // like 'g' but 0 input first line action. 543 selectAndDisplayLine( 0 ); 544 emit updateLineNumber( 0 ); 545 } 546 else if ( keyEvent->key() == Qt::Key_F3 && !shiftModifier ) 547 searchNext(); // duplicate of 'n' action. 548 else if ( keyEvent->key() == Qt::Key_F3 && shiftModifier ) 549 searchPrevious(); // duplicate of 'N' action. 550 else { 551 const char character = (keyEvent->text())[0].toLatin1(); 552 553 if ( keyEvent->modifiers() == Qt::NoModifier && 554 ( character >= '0' ) && ( character <= '9' ) ) { 555 // Adds the digit to the timed buffer 556 digitsBuffer_.add( character ); 557 } 558 else { 559 switch ( (keyEvent->text())[0].toLatin1() ) { 560 case 'j': 561 { 562 int delta = qMax( 1, digitsBuffer_.content() ); 563 disableFollow(); 564 //verticalScrollBar()->triggerAction( 565 //QScrollBar::SliderSingleStepAdd); 566 moveSelection( delta ); 567 break; 568 } 569 case 'k': 570 { 571 int delta = qMin( -1, - digitsBuffer_.content() ); 572 disableFollow(); 573 //verticalScrollBar()->triggerAction( 574 //QScrollBar::SliderSingleStepSub); 575 moveSelection( delta ); 576 break; 577 } 578 case 'h': 579 horizontalScrollBar()->triggerAction( 580 QScrollBar::SliderSingleStepSub); 581 break; 582 case 'l': 583 horizontalScrollBar()->triggerAction( 584 QScrollBar::SliderSingleStepAdd); 585 break; 586 case '0': 587 jumpToStartOfLine(); 588 break; 589 case '$': 590 jumpToEndOfLine(); 591 break; 592 case 'g': 593 { 594 int newLine = qMax( 0, digitsBuffer_.content() - 1 ); 595 if ( newLine >= logData->getNbLine() ) 596 newLine = logData->getNbLine() - 1; 597 disableFollow(); 598 selectAndDisplayLine( newLine ); 599 emit updateLineNumber( newLine ); 600 break; 601 } 602 case 'G': 603 disableFollow(); 604 selection_.selectLine( logData->getNbLine() - 1 ); 605 emit updateLineNumber( logData->getNbLine() - 1 ); 606 jumpToBottom(); 607 break; 608 case 'n': 609 emit searchNext(); 610 break; 611 case 'N': 612 emit searchPrevious(); 613 break; 614 case '*': 615 // Use the selected 'word' and search forward 616 findNextSelected(); 617 break; 618 case '#': 619 // Use the selected 'word' and search backward 620 findPreviousSelected(); 621 break; 622 default: 623 keyEvent->ignore(); 624 } 625 } 626 } 627 628 if ( keyEvent->isAccepted() ) { 629 emit activity(); 630 } 631 else { 632 QAbstractScrollArea::keyPressEvent( keyEvent ); 633 } 634 } 635 636 void AbstractLogView::wheelEvent( QWheelEvent* wheelEvent ) 637 { 638 emit activity(); 639 640 // LOG(logDEBUG) << "wheelEvent"; 641 642 // This is to handle the case where follow mode is on, but the user 643 // has moved using the scroll bar. We take them back to the bottom. 644 if ( followMode_ ) 645 jumpToBottom(); 646 647 int y_delta = 0; 648 if ( verticalScrollBar()->value() == verticalScrollBar()->maximum() ) { 649 // First see if we need to block the elastic (on Mac) 650 if ( wheelEvent->phase() == Qt::ScrollBegin ) 651 followElasticHook_.hold(); 652 else if ( wheelEvent->phase() == Qt::ScrollEnd ) 653 followElasticHook_.release(); 654 655 auto pixel_delta = wheelEvent->pixelDelta(); 656 657 if ( pixel_delta.isNull() ) { 658 y_delta = wheelEvent->angleDelta().y() / 0.7; 659 } 660 else { 661 y_delta = pixel_delta.y(); 662 } 663 664 // LOG(logDEBUG) << "Elastic " << y_delta; 665 followElasticHook_.move( - y_delta ); 666 } 667 668 // LOG(logDEBUG) << "Length = " << followElasticHook_.length(); 669 if ( followElasticHook_.length() == 0 && !followElasticHook_.isHooked() ) { 670 QAbstractScrollArea::wheelEvent( wheelEvent ); 671 } 672 } 673 674 void AbstractLogView::resizeEvent( QResizeEvent* ) 675 { 676 if ( logData == NULL ) 677 return; 678 679 LOG(logDEBUG) << "resizeEvent received"; 680 681 updateDisplaySize(); 682 } 683 684 bool AbstractLogView::event( QEvent* e ) 685 { 686 LOG(logDEBUG4) << "Event! Type: " << e->type(); 687 688 // Make sure we ignore the gesture events as 689 // they seem to be accepted by default. 690 if ( e->type() == QEvent::Gesture ) { 691 auto gesture_event = dynamic_cast<QGestureEvent*>( e ); 692 if ( gesture_event ) { 693 foreach( QGesture* gesture, gesture_event->gestures() ) { 694 LOG(logDEBUG4) << "Gesture: " << gesture->gestureType(); 695 gesture_event->ignore( gesture ); 696 } 697 698 // Ensure the event is sent up to parents who might care 699 return false; 700 } 701 } 702 703 return QAbstractScrollArea::event( e ); 704 } 705 706 void AbstractLogView::scrollContentsBy( int dx, int dy ) 707 { 708 LOG(logDEBUG) << "scrollContentsBy received " << dy 709 << "position " << verticalScrollBar()->value(); 710 711 int32_t last_top_line = ( logData->getNbLine() - getNbVisibleLines() ); 712 if ( ( last_top_line > 0 ) && verticalScrollBar()->value() > last_top_line ) { 713 // The user is going further than the last line, we need to lock the last line at the bottom 714 LOG(logDEBUG) << "scrollContentsBy beyond!"; 715 firstLine = last_top_line; 716 lastLineAligned = true; 717 } 718 else { 719 firstLine = verticalScrollBar()->value(); 720 lastLineAligned = false; 721 } 722 723 firstCol = (firstCol - dx) > 0 ? firstCol - dx : 0; 724 LineNumber last_line = firstLine + getNbVisibleLines(); 725 726 // Update the overview if we have one 727 if ( overview_ != NULL ) 728 overview_->updateCurrentPosition( firstLine, last_line ); 729 730 // Are we hovering over a new line? 731 const QPoint mouse_pos = mapFromGlobal( QCursor::pos() ); 732 considerMouseHovering( mouse_pos.x(), mouse_pos.y() ); 733 734 // Redraw 735 update(); 736 } 737 738 void AbstractLogView::paintEvent( QPaintEvent* paintEvent ) 739 { 740 const QRect invalidRect = paintEvent->rect(); 741 if ( (invalidRect.isEmpty()) || (logData == NULL) ) 742 return; 743 744 LOG(logDEBUG4) << "paintEvent received, firstLine=" << firstLine 745 << " lastLineAligned=" << lastLineAligned 746 << " rect: " << invalidRect.topLeft().x() << 747 ", " << invalidRect.topLeft().y() << 748 ", " << invalidRect.bottomRight().x() << 749 ", " << invalidRect.bottomRight().y(); 750 751 #ifdef GLOGG_PERF_MEASURE_FPS 752 static uint32_t maxline = logData->getNbLine(); 753 if ( ! perfCounter_.addEvent() && logData->getNbLine() > maxline ) { 754 LOG(logWARNING) << "Redraw per second: " << perfCounter_.readAndReset() 755 << " lines: " << logData->getNbLine(); 756 perfCounter_.addEvent(); 757 maxline = logData->getNbLine(); 758 } 759 #endif 760 761 auto start = std::chrono::system_clock::now(); 762 763 // Can we use our cache? 764 int32_t delta_y = textAreaCache_.first_line_ - firstLine; 765 766 if ( textAreaCache_.invalid_ || ( textAreaCache_.first_column_ != firstCol ) ) { 767 // Force a full redraw 768 delta_y = INT32_MAX; 769 } 770 771 if ( delta_y != 0 ) { 772 // Full or partial redraw 773 drawTextArea( &textAreaCache_.pixmap_, delta_y ); 774 775 textAreaCache_.invalid_ = false; 776 textAreaCache_.first_line_ = firstLine; 777 textAreaCache_.first_column_ = firstCol; 778 779 LOG(logDEBUG) << "End of writing " << 780 std::chrono::duration_cast<std::chrono::microseconds> 781 ( std::chrono::system_clock::now() - start ).count(); 782 } 783 else { 784 // Use the cache as is: nothing to do! 785 } 786 787 // Height including the potentially invisible last line 788 const int whole_height = getNbVisibleLines() * charHeight_; 789 // Height in pixels of the "pull to follow" bottom bar. 790 int pullToFollowHeight = mapPullToFollowLength( followElasticHook_.length() ) 791 + ( followElasticHook_.isHooked() ? 792 ( whole_height - viewport()->height() ) + PULL_TO_FOLLOW_HOOKED_HEIGHT : 0 ); 793 794 if ( pullToFollowHeight 795 && ( pullToFollowCache_.nb_columns_ != getNbVisibleCols() ) ) { 796 LOG(logDEBUG) << "Drawing pull to follow bar"; 797 pullToFollowCache_.pixmap_ = drawPullToFollowBar( 798 viewport()->width(), viewport()->devicePixelRatio() ); 799 pullToFollowCache_.nb_columns_ = getNbVisibleCols(); 800 } 801 802 QPainter devicePainter( viewport() ); 803 int drawingTopPosition = - pullToFollowHeight; 804 int drawingPullToFollowTopPosition = drawingTopPosition + whole_height; 805 806 // This is to cover the special case where there is less than a screenful 807 // worth of data, we want to see the document from the top, rather than 808 // pushing the first couple of lines above the viewport. 809 if ( followElasticHook_.isHooked() && ( logData->getNbLine() < getNbVisibleLines() ) ) { 810 drawingTopOffset_ = 0; 811 drawingTopPosition += ( whole_height - viewport()->height() ) + PULL_TO_FOLLOW_HOOKED_HEIGHT; 812 drawingPullToFollowTopPosition = drawingTopPosition + viewport()->height() - PULL_TO_FOLLOW_HOOKED_HEIGHT; 813 } 814 // This is the case where the user is on the 'extra' slot at the end 815 // and is aligned on the last line (but no elastic shown) 816 else if ( lastLineAligned && !followElasticHook_.isHooked() ) { 817 drawingTopOffset_ = - ( whole_height - viewport()->height() ); 818 drawingTopPosition += drawingTopOffset_; 819 drawingPullToFollowTopPosition = drawingTopPosition + whole_height; 820 } 821 else { 822 drawingTopOffset_ = - pullToFollowHeight; 823 } 824 825 devicePainter.drawPixmap( 0, drawingTopPosition, textAreaCache_.pixmap_ ); 826 827 // Draw the "pull to follow" zone if needed 828 if ( pullToFollowHeight ) { 829 devicePainter.drawPixmap( 0, 830 drawingPullToFollowTopPosition, 831 pullToFollowCache_.pixmap_ ); 832 } 833 834 LOG(logDEBUG) << "End of repaint " << 835 std::chrono::duration_cast<std::chrono::microseconds> 836 ( std::chrono::system_clock::now() - start ).count(); 837 } 838 839 // These two functions are virtual and this implementation is clearly 840 // only valid for a non-filtered display. 841 // We count on the 'filtered' derived classes to override them. 842 qint64 AbstractLogView::displayLineNumber( int lineNumber ) const 843 { 844 return lineNumber + 1; // show a 1-based index 845 } 846 847 qint64 AbstractLogView::maxDisplayLineNumber() const 848 { 849 return logData->getNbLine(); 850 } 851 852 void AbstractLogView::setOverview( Overview* overview, 853 OverviewWidget* overview_widget ) 854 { 855 overview_ = overview; 856 overviewWidget_ = overview_widget; 857 858 if ( overviewWidget_ ) { 859 connect( overviewWidget_, SIGNAL( lineClicked ( int ) ), 860 this, SIGNAL( followDisabled() ) ); 861 connect( overviewWidget_, SIGNAL( lineClicked ( int ) ), 862 this, SLOT( jumpToLine( int ) ) ); 863 } 864 refreshOverview(); 865 } 866 867 void AbstractLogView::searchUsingFunction( 868 qint64 (QuickFind::*search_function)() ) 869 { 870 disableFollow(); 871 872 int line = (quickFind_.*search_function)(); 873 if ( line >= 0 ) { 874 LOG(logDEBUG) << "search " << line; 875 displayLine( line ); 876 emit updateLineNumber( line ); 877 } 878 } 879 880 void AbstractLogView::searchForward() 881 { 882 searchUsingFunction( &QuickFind::searchForward ); 883 } 884 885 void AbstractLogView::searchBackward() 886 { 887 searchUsingFunction( &QuickFind::searchBackward ); 888 } 889 890 void AbstractLogView::incrementallySearchForward() 891 { 892 searchUsingFunction( &QuickFind::incrementallySearchForward ); 893 } 894 895 void AbstractLogView::incrementallySearchBackward() 896 { 897 searchUsingFunction( &QuickFind::incrementallySearchBackward ); 898 } 899 900 void AbstractLogView::incrementalSearchAbort() 901 { 902 quickFind_.incrementalSearchAbort(); 903 emit changeQuickFind( 904 "", 905 QuickFindMux::Forward ); 906 } 907 908 void AbstractLogView::incrementalSearchStop() 909 { 910 quickFind_.incrementalSearchStop(); 911 } 912 913 void AbstractLogView::followSet( bool checked ) 914 { 915 followMode_ = checked; 916 followElasticHook_.hook( checked ); 917 update(); 918 if ( checked ) 919 jumpToBottom(); 920 } 921 922 void AbstractLogView::refreshOverview() 923 { 924 assert( overviewWidget_ ); 925 926 // Create space for the Overview if needed 927 if ( ( getOverview() != NULL ) && getOverview()->isVisible() ) { 928 setViewportMargins( 0, 0, OVERVIEW_WIDTH, 0 ); 929 overviewWidget_->show(); 930 } 931 else { 932 setViewportMargins( 0, 0, 0, 0 ); 933 overviewWidget_->hide(); 934 } 935 } 936 937 // Reset the QuickFind when the pattern is changed. 938 void AbstractLogView::handlePatternUpdated() 939 { 940 LOG(logDEBUG) << "AbstractLogView::handlePatternUpdated()"; 941 942 quickFind_.resetLimits(); 943 update(); 944 } 945 946 // OR the current with the current search expression 947 void AbstractLogView::addToSearch() 948 { 949 if ( selection_.isPortion() ) { 950 LOG(logDEBUG) << "AbstractLogView::addToSearch()"; 951 emit addToSearch( selection_.getSelectedText( logData ) ); 952 } 953 else { 954 LOG(logERROR) << "AbstractLogView::addToSearch called for a wrong type of selection"; 955 } 956 } 957 958 // Find next occurence of the selected text (*) 959 void AbstractLogView::findNextSelected() 960 { 961 // Use the selected 'word' and search forward 962 if ( selection_.isPortion() ) { 963 emit changeQuickFind( 964 selection_.getSelectedText( logData ), 965 QuickFindMux::Forward ); 966 emit searchNext(); 967 } 968 } 969 970 // Find next previous of the selected text (#) 971 void AbstractLogView::findPreviousSelected() 972 { 973 if ( selection_.isPortion() ) { 974 emit changeQuickFind( 975 selection_.getSelectedText( logData ), 976 QuickFindMux::Backward ); 977 emit searchNext(); 978 } 979 } 980 981 // Copy the selection to the clipboard 982 void AbstractLogView::copy() 983 { 984 static QClipboard* clipboard = QApplication::clipboard(); 985 986 clipboard->setText( selection_.getSelectedText( logData ) ); 987 } 988 989 // 990 // Public functions 991 // 992 993 void AbstractLogView::updateData() 994 { 995 LOG(logDEBUG) << "AbstractLogView::updateData"; 996 997 // Check the top Line is within range 998 if ( firstLine >= logData->getNbLine() ) { 999 firstLine = 0; 1000 firstCol = 0; 1001 verticalScrollBar()->setValue( 0 ); 1002 horizontalScrollBar()->setValue( 0 ); 1003 } 1004 1005 // Crop selection if it become out of range 1006 selection_.crop( logData->getNbLine() - 1 ); 1007 1008 // Adapt the scroll bars to the new content 1009 updateScrollBars(); 1010 1011 // Calculate the index of the last line shown 1012 LineNumber last_line = std::min( static_cast<int64_t>( logData->getNbLine() ), 1013 static_cast<int64_t>( firstLine + getNbVisibleLines() ) ); 1014 1015 // Reset the QuickFind in case we have new stuff to search into 1016 quickFind_.resetLimits(); 1017 1018 if ( followMode_ ) 1019 jumpToBottom(); 1020 1021 // Update the overview if we have one 1022 if ( overview_ != NULL ) 1023 overview_->updateCurrentPosition( firstLine, last_line ); 1024 1025 // Invalidate our cache 1026 textAreaCache_.invalid_ = true; 1027 1028 // Repaint! 1029 update(); 1030 } 1031 1032 void AbstractLogView::updateDisplaySize() 1033 { 1034 // Font is assumed to be mono-space (is restricted by options dialog) 1035 QFontMetrics fm = fontMetrics(); 1036 charHeight_ = fm.height(); 1037 // For some reason on Qt 4.8.2 for Win, maxWidth() is wrong but the 1038 // following give the right result, not sure why: 1039 charWidth_ = fm.width( QChar('a') ); 1040 1041 // Update the scroll bars 1042 updateScrollBars(); 1043 verticalScrollBar()->setPageStep( getNbVisibleLines() ); 1044 1045 if ( followMode_ ) 1046 jumpToBottom(); 1047 1048 LOG(logDEBUG) << "viewport.width()=" << viewport()->width(); 1049 LOG(logDEBUG) << "viewport.height()=" << viewport()->height(); 1050 LOG(logDEBUG) << "width()=" << width(); 1051 LOG(logDEBUG) << "height()=" << height(); 1052 1053 if ( overviewWidget_ ) 1054 overviewWidget_->setGeometry( viewport()->width() + 2, 1, 1055 OVERVIEW_WIDTH - 1, viewport()->height() ); 1056 1057 // Our text area cache is now invalid 1058 textAreaCache_.invalid_ = true; 1059 textAreaCache_.pixmap_ = QPixmap { 1060 viewport()->width() * viewport()->devicePixelRatio(), 1061 static_cast<int32_t>( getNbVisibleLines() ) * charHeight_ * viewport()->devicePixelRatio() }; 1062 textAreaCache_.pixmap_.setDevicePixelRatio( viewport()->devicePixelRatio() ); 1063 } 1064 1065 int AbstractLogView::getTopLine() const 1066 { 1067 return firstLine; 1068 } 1069 1070 QString AbstractLogView::getSelection() const 1071 { 1072 return selection_.getSelectedText( logData ); 1073 } 1074 1075 void AbstractLogView::selectAll() 1076 { 1077 selection_.selectRange( 0, logData->getNbLine() - 1 ); 1078 textAreaCache_.invalid_ = true; 1079 update(); 1080 } 1081 1082 void AbstractLogView::selectAndDisplayLine( int line ) 1083 { 1084 disableFollow(); 1085 selection_.selectLine( line ); 1086 displayLine( line ); 1087 emit updateLineNumber( line ); 1088 } 1089 1090 // The difference between this function and displayLine() is quite 1091 // subtle: this one always jump, even if the line passed is visible. 1092 void AbstractLogView::jumpToLine( int line ) 1093 { 1094 // Put the selected line in the middle if possible 1095 int newTopLine = line - ( getNbVisibleLines() / 2 ); 1096 if ( newTopLine < 0 ) 1097 newTopLine = 0; 1098 1099 // This will also trigger a scrollContents event 1100 verticalScrollBar()->setValue( newTopLine ); 1101 } 1102 1103 void AbstractLogView::setLineNumbersVisible( bool lineNumbersVisible ) 1104 { 1105 lineNumbersVisible_ = lineNumbersVisible; 1106 } 1107 1108 void AbstractLogView::forceRefresh() 1109 { 1110 // Invalidate our cache 1111 textAreaCache_.invalid_ = true; 1112 } 1113 1114 // 1115 // Private functions 1116 // 1117 1118 // Returns the number of lines visible in the viewport 1119 LineNumber AbstractLogView::getNbVisibleLines() const 1120 { 1121 return static_cast<LineNumber>( viewport()->height() / charHeight_ + 1 ); 1122 } 1123 1124 // Returns the number of columns visible in the viewport 1125 int AbstractLogView::getNbVisibleCols() const 1126 { 1127 return ( viewport()->width() - leftMarginPx_ ) / charWidth_ + 1; 1128 } 1129 1130 // Converts the mouse x, y coordinates to the line number in the file 1131 int AbstractLogView::convertCoordToLine(int yPos) const 1132 { 1133 int line = firstLine + ( yPos - drawingTopOffset_ ) / charHeight_; 1134 1135 return line; 1136 } 1137 1138 // Converts the mouse x, y coordinates to the char coordinates (in the file) 1139 // This function ensure the pos exists in the file. 1140 QPoint AbstractLogView::convertCoordToFilePos( const QPoint& pos ) const 1141 { 1142 int line = convertCoordToLine( pos.y() ); 1143 if ( line >= logData->getNbLine() ) 1144 line = logData->getNbLine() - 1; 1145 if ( line < 0 ) 1146 line = 0; 1147 1148 // Determine column in screen space and convert it to file space 1149 int column = firstCol + ( pos.x() - leftMarginPx_ ) / charWidth_; 1150 1151 QString this_line = logData->getExpandedLineString( line ); 1152 const int length = this_line.length(); 1153 1154 if ( column >= length ) 1155 column = length - 1; 1156 if ( column < 0 ) 1157 column = 0; 1158 1159 LOG(logDEBUG4) << "AbstractLogView::convertCoordToFilePos col=" 1160 << column << " line=" << line; 1161 QPoint point( column, line ); 1162 1163 return point; 1164 } 1165 1166 // Makes the widget adjust itself to display the passed line. 1167 // Doing so, it will throw itself a scrollContents event. 1168 void AbstractLogView::displayLine( LineNumber line ) 1169 { 1170 // If the line is already the screen 1171 if ( ( line >= firstLine ) && 1172 ( line < ( firstLine + getNbVisibleLines() ) ) ) { 1173 // Invalidate our cache 1174 textAreaCache_.invalid_ = true; 1175 1176 // ... don't scroll and just repaint 1177 update(); 1178 } else { 1179 jumpToLine( line ); 1180 } 1181 } 1182 1183 // Move the selection up and down by the passed number of lines 1184 void AbstractLogView::moveSelection( int delta ) 1185 { 1186 LOG(logDEBUG) << "AbstractLogView::moveSelection delta=" << delta; 1187 1188 QList<int> selection = selection_.getLines(); 1189 int new_line; 1190 1191 // If nothing is selected, do as if line -1 was. 1192 if ( selection.isEmpty() ) 1193 selection.append( -1 ); 1194 1195 if ( delta < 0 ) 1196 new_line = selection.first() + delta; 1197 else 1198 new_line = selection.last() + delta; 1199 1200 if ( new_line < 0 ) 1201 new_line = 0; 1202 else if ( new_line >= logData->getNbLine() ) 1203 new_line = logData->getNbLine() - 1; 1204 1205 // Select and display the new line 1206 selection_.selectLine( new_line ); 1207 displayLine( new_line ); 1208 emit updateLineNumber( new_line ); 1209 emit newSelection( new_line ); 1210 } 1211 1212 // Make the start of the lines visible 1213 void AbstractLogView::jumpToStartOfLine() 1214 { 1215 horizontalScrollBar()->setValue( 0 ); 1216 } 1217 1218 // Make the end of the lines in the selection visible 1219 void AbstractLogView::jumpToEndOfLine() 1220 { 1221 QList<int> selection = selection_.getLines(); 1222 1223 // Search the longest line in the selection 1224 int max_length = 0; 1225 foreach ( int line, selection ) { 1226 int length = logData->getLineLength( line ); 1227 if ( length > max_length ) 1228 max_length = length; 1229 } 1230 1231 horizontalScrollBar()->setValue( max_length - getNbVisibleCols() ); 1232 } 1233 1234 // Make the end of the lines on the screen visible 1235 void AbstractLogView::jumpToRightOfScreen() 1236 { 1237 QList<int> selection = selection_.getLines(); 1238 1239 // Search the longest line on screen 1240 int max_length = 0; 1241 for ( auto i = firstLine; i <= ( firstLine + getNbVisibleLines() ); i++ ) { 1242 int length = logData->getLineLength( i ); 1243 if ( length > max_length ) 1244 max_length = length; 1245 } 1246 1247 horizontalScrollBar()->setValue( max_length - getNbVisibleCols() ); 1248 } 1249 1250 // Jump to the first line 1251 void AbstractLogView::jumpToTop() 1252 { 1253 // This will also trigger a scrollContents event 1254 verticalScrollBar()->setValue( 0 ); 1255 update(); // in case the screen hasn't moved 1256 } 1257 1258 // Jump to the last line 1259 void AbstractLogView::jumpToBottom() 1260 { 1261 const int new_top_line = 1262 qMax( logData->getNbLine() - getNbVisibleLines() + 1, 0LL ); 1263 1264 // This will also trigger a scrollContents event 1265 verticalScrollBar()->setValue( new_top_line ); 1266 update(); // in case the screen hasn't moved 1267 } 1268 1269 // Returns whether the character passed is a 'word' character 1270 inline bool AbstractLogView::isCharWord( char c ) 1271 { 1272 if ( ( ( c >= 'A' ) && ( c <= 'Z' ) ) || 1273 ( ( c >= 'a' ) && ( c <= 'z' ) ) || 1274 ( ( c >= '0' ) && ( c <= '9' ) ) || 1275 ( ( c == '_' ) ) ) 1276 return true; 1277 else 1278 return false; 1279 } 1280 1281 // Select the word under the given position 1282 void AbstractLogView::selectWordAtPosition( const QPoint& pos ) 1283 { 1284 const int x = pos.x(); 1285 const QString line = logData->getExpandedLineString( pos.y() ); 1286 1287 if ( isCharWord( line[x].toLatin1() ) ) { 1288 // Search backward for the first character in the word 1289 int currentPos = x; 1290 for ( ; currentPos > 0; currentPos-- ) 1291 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1292 break; 1293 // Exclude the first char of the line if needed 1294 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1295 currentPos++; 1296 int start = currentPos; 1297 1298 // Now search for the end 1299 currentPos = x; 1300 for ( ; currentPos < line.length() - 1; currentPos++ ) 1301 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1302 break; 1303 // Exclude the last char of the line if needed 1304 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1305 currentPos--; 1306 int end = currentPos; 1307 1308 selection_.selectPortion( pos.y(), start, end ); 1309 updateGlobalSelection(); 1310 update(); 1311 } 1312 } 1313 1314 // Update the system global (middle click) selection (X11 only) 1315 void AbstractLogView::updateGlobalSelection() 1316 { 1317 static QClipboard* const clipboard = QApplication::clipboard(); 1318 1319 // Updating it only for "non-trivial" (range or portion) selections 1320 if ( ! selection_.isSingleLine() ) 1321 clipboard->setText( selection_.getSelectedText( logData ), 1322 QClipboard::Selection ); 1323 } 1324 1325 // Create the pop-up menu 1326 void AbstractLogView::createMenu() 1327 { 1328 copyAction_ = new QAction( tr("&Copy"), this ); 1329 // No text as this action title depends on the type of selection 1330 connect( copyAction_, SIGNAL(triggered()), this, SLOT(copy()) ); 1331 1332 // For '#' and '*', shortcuts doesn't seem to work but 1333 // at least it displays them in the menu, we manually handle those keys 1334 // as keys event anyway (in keyPressEvent). 1335 findNextAction_ = new QAction(tr("Find &next"), this); 1336 findNextAction_->setShortcut( Qt::Key_Asterisk ); 1337 findNextAction_->setStatusTip( tr("Find the next occurence") ); 1338 connect( findNextAction_, SIGNAL(triggered()), 1339 this, SLOT( findNextSelected() ) ); 1340 1341 findPreviousAction_ = new QAction( tr("Find &previous"), this ); 1342 findPreviousAction_->setShortcut( tr("#") ); 1343 findPreviousAction_->setStatusTip( tr("Find the previous occurence") ); 1344 connect( findPreviousAction_, SIGNAL(triggered()), 1345 this, SLOT( findPreviousSelected() ) ); 1346 1347 addToSearchAction_ = new QAction( tr("&Add to search"), this ); 1348 addToSearchAction_->setStatusTip( 1349 tr("Add the selection to the current search") ); 1350 connect( addToSearchAction_, SIGNAL( triggered() ), 1351 this, SLOT( addToSearch() ) ); 1352 1353 popupMenu_ = new QMenu( this ); 1354 popupMenu_->addAction( copyAction_ ); 1355 popupMenu_->addSeparator(); 1356 popupMenu_->addAction( findNextAction_ ); 1357 popupMenu_->addAction( findPreviousAction_ ); 1358 popupMenu_->addAction( addToSearchAction_ ); 1359 } 1360 1361 void AbstractLogView::considerMouseHovering( int x_pos, int y_pos ) 1362 { 1363 int line = convertCoordToLine( y_pos ); 1364 if ( ( x_pos < leftMarginPx_ ) 1365 && ( line >= 0 ) 1366 && ( line < logData->getNbLine() ) ) { 1367 // Mouse moved in the margin, send event up 1368 // (possibly to highlight the overview) 1369 if ( line != lastHoveredLine_ ) { 1370 LOG(logDEBUG) << "Mouse moved in margin line: " << line; 1371 emit mouseHoveredOverLine( line ); 1372 lastHoveredLine_ = line; 1373 } 1374 } 1375 else { 1376 if ( lastHoveredLine_ != -1 ) { 1377 emit mouseLeftHoveringZone(); 1378 lastHoveredLine_ = -1; 1379 } 1380 } 1381 } 1382 1383 void AbstractLogView::updateScrollBars() 1384 { 1385 verticalScrollBar()->setRange( 0, std::max( 0LL, 1386 logData->getNbLine() - getNbVisibleLines() + 1 ) ); 1387 1388 const int hScrollMaxValue = std::max( 0, 1389 logData->getMaxLength() - getNbVisibleCols() + 1 ); 1390 horizontalScrollBar()->setRange( 0, hScrollMaxValue ); 1391 } 1392 1393 void AbstractLogView::drawTextArea( QPaintDevice* paint_device, int32_t delta_y ) 1394 { 1395 // LOG( logDEBUG ) << "devicePixelRatio: " << viewport()->devicePixelRatio(); 1396 // LOG( logDEBUG ) << "viewport size: " << viewport()->size().width(); 1397 // LOG( logDEBUG ) << "pixmap size: " << textPixmap.width(); 1398 // Repaint the viewport 1399 QPainter painter( paint_device ); 1400 // LOG( logDEBUG ) << "font: " << viewport()->font().family().toStdString(); 1401 // LOG( logDEBUG ) << "font painter: " << painter.font().family().toStdString(); 1402 1403 painter.setFont( this->font() ); 1404 1405 const int fontHeight = charHeight_; 1406 const int fontAscent = painter.fontMetrics().ascent(); 1407 const int nbCols = getNbVisibleCols(); 1408 const int paintDeviceHeight = paint_device->height() / viewport()->devicePixelRatio(); 1409 const int paintDeviceWidth = paint_device->width() / viewport()->devicePixelRatio(); 1410 const QPalette& palette = viewport()->palette(); 1411 std::shared_ptr<const FilterSet> filterSet = 1412 Persistent<FilterSet>( "filterSet" ); 1413 QColor foreColor, backColor; 1414 1415 static const QBrush normalBulletBrush = QBrush( Qt::white ); 1416 static const QBrush matchBulletBrush = QBrush( Qt::red ); 1417 static const QBrush markBrush = QBrush( "dodgerblue" ); 1418 1419 static const int SEPARATOR_WIDTH = 1; 1420 static const qreal BULLET_AREA_WIDTH = 11; 1421 static const int CONTENT_MARGIN_WIDTH = 1; 1422 static const int LINE_NUMBER_PADDING = 3; 1423 1424 // First check the lines to be drawn are within range (might not be the case if 1425 // the file has just changed) 1426 const int64_t lines_in_file = logData->getNbLine(); 1427 1428 if ( firstLine > lines_in_file ) 1429 firstLine = lines_in_file ? lines_in_file - 1 : 0; 1430 1431 const int64_t nbLines = std::min( 1432 static_cast<int64_t>( getNbVisibleLines() ), lines_in_file - firstLine ); 1433 1434 const int bottomOfTextPx = nbLines * fontHeight; 1435 1436 LOG(logDEBUG) << "drawing lines from " << firstLine << " (" << nbLines << " lines)"; 1437 LOG(logDEBUG) << "bottomOfTextPx: " << bottomOfTextPx; 1438 LOG(logDEBUG) << "Height: " << paintDeviceHeight; 1439 1440 // Lines to write 1441 const QStringList lines = logData->getExpandedLines( firstLine, nbLines ); 1442 1443 // First draw the bullet left margin 1444 painter.setPen(palette.color(QPalette::Text)); 1445 painter.fillRect( 0, 0, 1446 BULLET_AREA_WIDTH, paintDeviceHeight, 1447 Qt::darkGray ); 1448 1449 // Column at which the content should start (pixels) 1450 qreal contentStartPosX = BULLET_AREA_WIDTH + SEPARATOR_WIDTH; 1451 1452 // This is also the bullet zone width, used for marking clicks 1453 bulletZoneWidthPx_ = contentStartPosX; 1454 1455 // Update the length of line numbers 1456 const int nbDigitsInLineNumber = countDigits( maxDisplayLineNumber() ); 1457 1458 // Draw the line numbers area 1459 int lineNumberAreaStartX = 0; 1460 if ( lineNumbersVisible_ ) { 1461 int lineNumberWidth = charWidth_ * nbDigitsInLineNumber; 1462 int lineNumberAreaWidth = 1463 2 * LINE_NUMBER_PADDING + lineNumberWidth; 1464 lineNumberAreaStartX = contentStartPosX; 1465 1466 painter.setPen(palette.color(QPalette::Text)); 1467 /* Not sure if it looks good... 1468 painter.drawLine( contentStartPosX + lineNumberAreaWidth, 1469 0, 1470 contentStartPosX + lineNumberAreaWidth, 1471 viewport()->height() ); 1472 */ 1473 painter.fillRect( contentStartPosX - SEPARATOR_WIDTH, 0, 1474 lineNumberAreaWidth + SEPARATOR_WIDTH, paintDeviceHeight, 1475 Qt::lightGray ); 1476 1477 // Update for drawing the actual text 1478 contentStartPosX += lineNumberAreaWidth; 1479 } 1480 else { 1481 painter.fillRect( contentStartPosX - SEPARATOR_WIDTH, 0, 1482 SEPARATOR_WIDTH + 1, paintDeviceHeight, 1483 Qt::lightGray ); 1484 // contentStartPosX += SEPARATOR_WIDTH; 1485 } 1486 1487 painter.drawLine( BULLET_AREA_WIDTH, 0, 1488 BULLET_AREA_WIDTH, paintDeviceHeight - 1 ); 1489 1490 // This is the total width of the 'margin' (including line number if any) 1491 // used for mouse calculation etc... 1492 leftMarginPx_ = contentStartPosX + SEPARATOR_WIDTH; 1493 1494 // Then draw each line 1495 for (int i = 0; i < nbLines; i++) { 1496 const LineNumber line_index = i + firstLine; 1497 1498 // Position in pixel of the base line of the line to print 1499 const int yPos = i * fontHeight; 1500 const int xPos = contentStartPosX + CONTENT_MARGIN_WIDTH; 1501 1502 // string to print, cut to fit the length and position of the view 1503 const QString line = lines[i]; 1504 const QString cutLine = line.mid( firstCol, nbCols ); 1505 1506 if ( selection_.isLineSelected( line_index ) ) { 1507 // Reverse the selected line 1508 foreColor = palette.color( QPalette::HighlightedText ); 1509 backColor = palette.color( QPalette::Highlight ); 1510 painter.setPen(palette.color(QPalette::Text)); 1511 } 1512 else if ( filterSet->matchLine( logData->getLineString( line_index ), 1513 &foreColor, &backColor ) ) { 1514 // Apply a filter to the line 1515 } 1516 else { 1517 // Use the default colors 1518 foreColor = palette.color( QPalette::Text ); 1519 backColor = palette.color( QPalette::Base ); 1520 } 1521 1522 // Is there something selected in the line? 1523 int sel_start, sel_end; 1524 bool isSelection = 1525 selection_.getPortionForLine( line_index, &sel_start, &sel_end ); 1526 // Has the line got elements to be highlighted 1527 QList<QuickFindMatch> qfMatchList; 1528 bool isMatch = 1529 quickFindPattern_->matchLine( line, qfMatchList ); 1530 1531 if ( isSelection || isMatch ) { 1532 // We use the LineDrawer and its chunks because the 1533 // line has to be somehow highlighted 1534 LineDrawer lineDrawer( backColor ); 1535 1536 // First we create a list of chunks with the highlights 1537 QList<LineChunk> chunkList; 1538 int column = 0; // Current column in line space 1539 foreach( const QuickFindMatch match, qfMatchList ) { 1540 int start = match.startColumn() - firstCol; 1541 int end = start + match.length(); 1542 // Ignore matches that are *completely* outside view area 1543 if ( ( start < 0 && end < 0 ) || start >= nbCols ) 1544 continue; 1545 if ( start > column ) 1546 chunkList << LineChunk( column, start - 1, LineChunk::Normal ); 1547 column = qMin( start + match.length() - 1, nbCols ); 1548 chunkList << LineChunk( qMax( start, 0 ), column, 1549 LineChunk::Highlighted ); 1550 column++; 1551 } 1552 if ( column <= cutLine.length() - 1 ) 1553 chunkList << LineChunk( column, cutLine.length() - 1, LineChunk::Normal ); 1554 1555 // Then we add the selection if needed 1556 QList<LineChunk> newChunkList; 1557 if ( isSelection ) { 1558 sel_start -= firstCol; // coord in line space 1559 sel_end -= firstCol; 1560 1561 foreach ( const LineChunk chunk, chunkList ) { 1562 newChunkList << chunk.select( sel_start, sel_end ); 1563 } 1564 } 1565 else 1566 newChunkList = chunkList; 1567 1568 foreach ( const LineChunk chunk, newChunkList ) { 1569 // Select the colours 1570 QColor fore; 1571 QColor back; 1572 switch ( chunk.type() ) { 1573 case LineChunk::Normal: 1574 fore = foreColor; 1575 back = backColor; 1576 break; 1577 case LineChunk::Highlighted: 1578 fore = QColor( "black" ); 1579 back = QColor( "yellow" ); 1580 // fore = highlightForeColor; 1581 // back = highlightBackColor; 1582 break; 1583 case LineChunk::Selected: 1584 fore = palette.color( QPalette::HighlightedText ), 1585 back = palette.color( QPalette::Highlight ); 1586 break; 1587 } 1588 lineDrawer.addChunk ( chunk, fore, back ); 1589 } 1590 1591 lineDrawer.draw( painter, xPos, yPos, 1592 viewport()->width(), cutLine, 1593 CONTENT_MARGIN_WIDTH ); 1594 } 1595 else { 1596 // Nothing to be highlighted, we print the whole line! 1597 painter.fillRect( xPos - CONTENT_MARGIN_WIDTH, yPos, 1598 viewport()->width(), fontHeight, backColor ); 1599 // (the rectangle is extended on the left to cover the small 1600 // margin, it looks better (LineDrawer does the same) ) 1601 painter.setPen( foreColor ); 1602 painter.drawText( xPos, yPos + fontAscent, cutLine ); 1603 } 1604 1605 // Then draw the bullet 1606 painter.setPen( palette.color( QPalette::Text ) ); 1607 const qreal circleSize = 3; 1608 const qreal arrowHeight = 4; 1609 const qreal middleXLine = BULLET_AREA_WIDTH / 2; 1610 const qreal middleYLine = yPos + (fontHeight / 2); 1611 1612 const LineType line_type = lineType( line_index ); 1613 if ( line_type == Marked ) { 1614 // A pretty arrow if the line is marked 1615 const QPointF points[7] = { 1616 QPointF(1, middleYLine - 2), 1617 QPointF(middleXLine, middleYLine - 2), 1618 QPointF(middleXLine, middleYLine - arrowHeight), 1619 QPointF(BULLET_AREA_WIDTH - 1, middleYLine), 1620 QPointF(middleXLine, middleYLine + arrowHeight), 1621 QPointF(middleXLine, middleYLine + 2), 1622 QPointF(1, middleYLine + 2 ), 1623 }; 1624 1625 painter.setBrush( markBrush ); 1626 painter.drawPolygon( points, 7 ); 1627 } 1628 else { 1629 // For pretty circles 1630 painter.setRenderHint( QPainter::Antialiasing ); 1631 1632 if ( lineType( line_index ) == Match ) 1633 painter.setBrush( matchBulletBrush ); 1634 else 1635 painter.setBrush( normalBulletBrush ); 1636 painter.drawEllipse( middleXLine - circleSize, 1637 middleYLine - circleSize, 1638 circleSize * 2, circleSize * 2 ); 1639 } 1640 1641 // Draw the line number 1642 if ( lineNumbersVisible_ ) { 1643 static const QString lineNumberFormat( "%1" ); 1644 const QString& lineNumberStr = 1645 lineNumberFormat.arg( displayLineNumber( line_index ), 1646 nbDigitsInLineNumber ); 1647 painter.setPen( palette.color( QPalette::Text ) ); 1648 painter.drawText( lineNumberAreaStartX + LINE_NUMBER_PADDING, 1649 yPos + fontAscent, lineNumberStr ); 1650 } 1651 } // For each line 1652 1653 if ( bottomOfTextPx < paintDeviceHeight ) { 1654 // The lines don't cover the whole device 1655 painter.fillRect( contentStartPosX, bottomOfTextPx, 1656 paintDeviceWidth - contentStartPosX, 1657 paintDeviceHeight, palette.color( QPalette::Window ) ); 1658 } 1659 } 1660 1661 // Draw the "pull to follow" bar and return a pixmap. 1662 // The width is passed in "logic" pixels. 1663 QPixmap AbstractLogView::drawPullToFollowBar( int width, float pixel_ratio ) 1664 { 1665 static constexpr int barWidth = 40; 1666 QPixmap pixmap ( static_cast<float>( width ) * pixel_ratio, barWidth * 6.0 ); 1667 pixmap.setDevicePixelRatio( pixel_ratio ); 1668 pixmap.fill( this->palette().color( this->backgroundRole() ) ); 1669 const int nbBars = width / (barWidth * 2) + 1; 1670 1671 QPainter painter( &pixmap ); 1672 painter.setPen( QPen( QColor( 0, 0, 0, 0 ) ) ); 1673 painter.setBrush( QBrush( QColor( "lightyellow" ) ) ); 1674 1675 for ( int i = 0; i < nbBars; ++i ) { 1676 QPoint points[4] = { 1677 { (i*2+1)*barWidth, 0 }, 1678 { 0, (i*2+1)*barWidth }, 1679 { 0, (i+1)*2*barWidth }, 1680 { (i+1)*2*barWidth, 0 } 1681 }; 1682 painter.drawConvexPolygon( points, 4 ); 1683 } 1684 1685 return pixmap; 1686 } 1687 1688 void AbstractLogView::disableFollow() 1689 { 1690 emit followModeChanged( false ); 1691 followElasticHook_.hook( false ); 1692 } 1693 1694 namespace { 1695 1696 // Convert the length of the pull to follow bar to pixels 1697 int mapPullToFollowLength( int length ) 1698 { 1699 return length / 14; 1700 } 1701 1702 }; 1703