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 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 drawingTopPosition += ( whole_height - viewport()->height() ) + PULL_TO_FOLLOW_HOOKED_HEIGHT; 811 drawingPullToFollowTopPosition = drawingTopPosition + viewport()->height() - PULL_TO_FOLLOW_HOOKED_HEIGHT; 812 } 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 if ( lastLineAligned && !followElasticHook_.isHooked() ) { 817 drawingTopPosition -= ( whole_height - viewport()->height() ); 818 drawingPullToFollowTopPosition = drawingTopPosition + whole_height; 819 } 820 821 devicePainter.drawPixmap( 0, drawingTopPosition, textAreaCache_.pixmap_ ); 822 823 // Draw the "pull to follow" zone if needed 824 if ( pullToFollowHeight_ ) { 825 devicePainter.drawPixmap( 0, 826 drawingPullToFollowTopPosition, 827 pullToFollowCache_.pixmap_ ); 828 } 829 830 LOG(logDEBUG) << "End of repaint " << 831 std::chrono::duration_cast<std::chrono::microseconds> 832 ( std::chrono::system_clock::now() - start ).count(); 833 } 834 835 // These two functions are virtual and this implementation is clearly 836 // only valid for a non-filtered display. 837 // We count on the 'filtered' derived classes to override them. 838 qint64 AbstractLogView::displayLineNumber( int lineNumber ) const 839 { 840 return lineNumber + 1; // show a 1-based index 841 } 842 843 qint64 AbstractLogView::maxDisplayLineNumber() const 844 { 845 return logData->getNbLine(); 846 } 847 848 void AbstractLogView::setOverview( Overview* overview, 849 OverviewWidget* overview_widget ) 850 { 851 overview_ = overview; 852 overviewWidget_ = overview_widget; 853 854 if ( overviewWidget_ ) { 855 connect( overviewWidget_, SIGNAL( lineClicked ( int ) ), 856 this, SIGNAL( followDisabled() ) ); 857 connect( overviewWidget_, SIGNAL( lineClicked ( int ) ), 858 this, SLOT( jumpToLine( int ) ) ); 859 } 860 refreshOverview(); 861 } 862 863 void AbstractLogView::searchUsingFunction( 864 qint64 (QuickFind::*search_function)() ) 865 { 866 disableFollow(); 867 868 int line = (quickFind_.*search_function)(); 869 if ( line >= 0 ) { 870 LOG(logDEBUG) << "search " << line; 871 displayLine( line ); 872 emit updateLineNumber( line ); 873 } 874 } 875 876 void AbstractLogView::searchForward() 877 { 878 searchUsingFunction( &QuickFind::searchForward ); 879 } 880 881 void AbstractLogView::searchBackward() 882 { 883 searchUsingFunction( &QuickFind::searchBackward ); 884 } 885 886 void AbstractLogView::incrementallySearchForward() 887 { 888 searchUsingFunction( &QuickFind::incrementallySearchForward ); 889 } 890 891 void AbstractLogView::incrementallySearchBackward() 892 { 893 searchUsingFunction( &QuickFind::incrementallySearchBackward ); 894 } 895 896 void AbstractLogView::incrementalSearchAbort() 897 { 898 quickFind_.incrementalSearchAbort(); 899 emit changeQuickFind( 900 "", 901 QuickFindMux::Forward ); 902 } 903 904 void AbstractLogView::incrementalSearchStop() 905 { 906 quickFind_.incrementalSearchStop(); 907 } 908 909 void AbstractLogView::followSet( bool checked ) 910 { 911 followMode_ = checked; 912 followElasticHook_.hook( checked ); 913 update(); 914 if ( checked ) 915 jumpToBottom(); 916 } 917 918 void AbstractLogView::refreshOverview() 919 { 920 assert( overviewWidget_ ); 921 922 // Create space for the Overview if needed 923 if ( ( getOverview() != NULL ) && getOverview()->isVisible() ) { 924 setViewportMargins( 0, 0, OVERVIEW_WIDTH, 0 ); 925 overviewWidget_->show(); 926 } 927 else { 928 setViewportMargins( 0, 0, 0, 0 ); 929 overviewWidget_->hide(); 930 } 931 } 932 933 // Reset the QuickFind when the pattern is changed. 934 void AbstractLogView::handlePatternUpdated() 935 { 936 LOG(logDEBUG) << "AbstractLogView::handlePatternUpdated()"; 937 938 quickFind_.resetLimits(); 939 update(); 940 } 941 942 // OR the current with the current search expression 943 void AbstractLogView::addToSearch() 944 { 945 if ( selection_.isPortion() ) { 946 LOG(logDEBUG) << "AbstractLogView::addToSearch()"; 947 emit addToSearch( selection_.getSelectedText( logData ) ); 948 } 949 else { 950 LOG(logERROR) << "AbstractLogView::addToSearch called for a wrong type of selection"; 951 } 952 } 953 954 // Find next occurence of the selected text (*) 955 void AbstractLogView::findNextSelected() 956 { 957 // Use the selected 'word' and search forward 958 if ( selection_.isPortion() ) { 959 emit changeQuickFind( 960 selection_.getSelectedText( logData ), 961 QuickFindMux::Forward ); 962 emit searchNext(); 963 } 964 } 965 966 // Find next previous of the selected text (#) 967 void AbstractLogView::findPreviousSelected() 968 { 969 if ( selection_.isPortion() ) { 970 emit changeQuickFind( 971 selection_.getSelectedText( logData ), 972 QuickFindMux::Backward ); 973 emit searchNext(); 974 } 975 } 976 977 // Copy the selection to the clipboard 978 void AbstractLogView::copy() 979 { 980 static QClipboard* clipboard = QApplication::clipboard(); 981 982 clipboard->setText( selection_.getSelectedText( logData ) ); 983 } 984 985 // 986 // Public functions 987 // 988 989 void AbstractLogView::updateData() 990 { 991 LOG(logDEBUG) << "AbstractLogView::updateData"; 992 993 // Check the top Line is within range 994 if ( firstLine >= logData->getNbLine() ) { 995 firstLine = 0; 996 firstCol = 0; 997 verticalScrollBar()->setValue( 0 ); 998 horizontalScrollBar()->setValue( 0 ); 999 } 1000 1001 // Crop selection if it become out of range 1002 selection_.crop( logData->getNbLine() - 1 ); 1003 1004 // Adapt the scroll bars to the new content 1005 updateScrollBars(); 1006 1007 // Calculate the index of the last line shown 1008 LineNumber last_line = std::min( static_cast<int64_t>( logData->getNbLine() ), 1009 static_cast<int64_t>( firstLine + getNbVisibleLines() ) ); 1010 1011 // Reset the QuickFind in case we have new stuff to search into 1012 quickFind_.resetLimits(); 1013 1014 if ( followMode_ ) 1015 jumpToBottom(); 1016 1017 // Update the overview if we have one 1018 if ( overview_ != NULL ) 1019 overview_->updateCurrentPosition( firstLine, last_line ); 1020 1021 // Invalidate our cache 1022 textAreaCache_.invalid_ = true; 1023 1024 // Repaint! 1025 update(); 1026 } 1027 1028 void AbstractLogView::updateDisplaySize() 1029 { 1030 // Font is assumed to be mono-space (is restricted by options dialog) 1031 QFontMetrics fm = fontMetrics(); 1032 charHeight_ = fm.height(); 1033 // For some reason on Qt 4.8.2 for Win, maxWidth() is wrong but the 1034 // following give the right result, not sure why: 1035 charWidth_ = fm.width( QChar('a') ); 1036 1037 // Update the scroll bars 1038 updateScrollBars(); 1039 verticalScrollBar()->setPageStep( getNbVisibleLines() ); 1040 1041 if ( followMode_ ) 1042 jumpToBottom(); 1043 1044 LOG(logDEBUG) << "viewport.width()=" << viewport()->width(); 1045 LOG(logDEBUG) << "viewport.height()=" << viewport()->height(); 1046 LOG(logDEBUG) << "width()=" << width(); 1047 LOG(logDEBUG) << "height()=" << height(); 1048 1049 if ( overviewWidget_ ) 1050 overviewWidget_->setGeometry( viewport()->width() + 2, 1, 1051 OVERVIEW_WIDTH - 1, viewport()->height() ); 1052 1053 // Our text area cache is now invalid 1054 textAreaCache_.invalid_ = true; 1055 textAreaCache_.pixmap_ = QPixmap { 1056 viewport()->width() * viewport()->devicePixelRatio(), 1057 static_cast<int32_t>( getNbVisibleLines() ) * charHeight_ * viewport()->devicePixelRatio() }; 1058 textAreaCache_.pixmap_.setDevicePixelRatio( viewport()->devicePixelRatio() ); 1059 } 1060 1061 int AbstractLogView::getTopLine() const 1062 { 1063 return firstLine; 1064 } 1065 1066 QString AbstractLogView::getSelection() const 1067 { 1068 return selection_.getSelectedText( logData ); 1069 } 1070 1071 void AbstractLogView::selectAll() 1072 { 1073 selection_.selectRange( 0, logData->getNbLine() - 1 ); 1074 textAreaCache_.invalid_ = true; 1075 update(); 1076 } 1077 1078 void AbstractLogView::selectAndDisplayLine( int line ) 1079 { 1080 disableFollow(); 1081 selection_.selectLine( line ); 1082 displayLine( line ); 1083 emit updateLineNumber( line ); 1084 } 1085 1086 // The difference between this function and displayLine() is quite 1087 // subtle: this one always jump, even if the line passed is visible. 1088 void AbstractLogView::jumpToLine( int line ) 1089 { 1090 // Put the selected line in the middle if possible 1091 int newTopLine = line - ( getNbVisibleLines() / 2 ); 1092 if ( newTopLine < 0 ) 1093 newTopLine = 0; 1094 1095 // This will also trigger a scrollContents event 1096 verticalScrollBar()->setValue( newTopLine ); 1097 } 1098 1099 void AbstractLogView::setLineNumbersVisible( bool lineNumbersVisible ) 1100 { 1101 lineNumbersVisible_ = lineNumbersVisible; 1102 } 1103 1104 void AbstractLogView::forceRefresh() 1105 { 1106 // Invalidate our cache 1107 textAreaCache_.invalid_ = true; 1108 } 1109 1110 // 1111 // Private functions 1112 // 1113 1114 // Returns the number of lines visible in the viewport 1115 LineNumber AbstractLogView::getNbVisibleLines() const 1116 { 1117 return static_cast<LineNumber>( viewport()->height() / charHeight_ + 1 ); 1118 } 1119 1120 // Returns the number of columns visible in the viewport 1121 int AbstractLogView::getNbVisibleCols() const 1122 { 1123 return ( viewport()->width() - leftMarginPx_ ) / charWidth_ + 1; 1124 } 1125 1126 // Converts the mouse x, y coordinates to the line number in the file 1127 int AbstractLogView::convertCoordToLine(int yPos) const 1128 { 1129 int line = firstLine + ( yPos + pullToFollowHeight_ ) / charHeight_; 1130 1131 return line; 1132 } 1133 1134 // Converts the mouse x, y coordinates to the char coordinates (in the file) 1135 // This function ensure the pos exists in the file. 1136 QPoint AbstractLogView::convertCoordToFilePos( const QPoint& pos ) const 1137 { 1138 int line = firstLine + ( pos.y() + pullToFollowHeight_ ) / charHeight_; 1139 if ( line >= logData->getNbLine() ) 1140 line = logData->getNbLine() - 1; 1141 if ( line < 0 ) 1142 line = 0; 1143 1144 // Determine column in screen space and convert it to file space 1145 int column = firstCol + ( pos.x() - leftMarginPx_ ) / charWidth_; 1146 1147 QString this_line = logData->getExpandedLineString( line ); 1148 const int length = this_line.length(); 1149 1150 if ( column >= length ) 1151 column = length - 1; 1152 if ( column < 0 ) 1153 column = 0; 1154 1155 LOG(logDEBUG4) << "AbstractLogView::convertCoordToFilePos col=" 1156 << column << " line=" << line; 1157 QPoint point( column, line ); 1158 1159 return point; 1160 } 1161 1162 // Makes the widget adjust itself to display the passed line. 1163 // Doing so, it will throw itself a scrollContents event. 1164 void AbstractLogView::displayLine( LineNumber line ) 1165 { 1166 // If the line is already the screen 1167 if ( ( line >= firstLine ) && 1168 ( line < ( firstLine + getNbVisibleLines() ) ) ) { 1169 // Invalidate our cache 1170 textAreaCache_.invalid_ = true; 1171 1172 // ... don't scroll and just repaint 1173 update(); 1174 } else { 1175 jumpToLine( line ); 1176 } 1177 } 1178 1179 // Move the selection up and down by the passed number of lines 1180 void AbstractLogView::moveSelection( int delta ) 1181 { 1182 LOG(logDEBUG) << "AbstractLogView::moveSelection delta=" << delta; 1183 1184 QList<int> selection = selection_.getLines(); 1185 int new_line; 1186 1187 // If nothing is selected, do as if line -1 was. 1188 if ( selection.isEmpty() ) 1189 selection.append( -1 ); 1190 1191 if ( delta < 0 ) 1192 new_line = selection.first() + delta; 1193 else 1194 new_line = selection.last() + delta; 1195 1196 if ( new_line < 0 ) 1197 new_line = 0; 1198 else if ( new_line >= logData->getNbLine() ) 1199 new_line = logData->getNbLine() - 1; 1200 1201 // Select and display the new line 1202 selection_.selectLine( new_line ); 1203 displayLine( new_line ); 1204 emit updateLineNumber( new_line ); 1205 emit newSelection( new_line ); 1206 } 1207 1208 // Make the start of the lines visible 1209 void AbstractLogView::jumpToStartOfLine() 1210 { 1211 horizontalScrollBar()->setValue( 0 ); 1212 } 1213 1214 // Make the end of the lines in the selection visible 1215 void AbstractLogView::jumpToEndOfLine() 1216 { 1217 QList<int> selection = selection_.getLines(); 1218 1219 // Search the longest line in the selection 1220 int max_length = 0; 1221 foreach ( int line, selection ) { 1222 int length = logData->getLineLength( line ); 1223 if ( length > max_length ) 1224 max_length = length; 1225 } 1226 1227 horizontalScrollBar()->setValue( max_length - getNbVisibleCols() ); 1228 } 1229 1230 // Make the end of the lines on the screen visible 1231 void AbstractLogView::jumpToRightOfScreen() 1232 { 1233 QList<int> selection = selection_.getLines(); 1234 1235 // Search the longest line on screen 1236 int max_length = 0; 1237 for ( auto i = firstLine; i <= ( firstLine + getNbVisibleLines() ); i++ ) { 1238 int length = logData->getLineLength( i ); 1239 if ( length > max_length ) 1240 max_length = length; 1241 } 1242 1243 horizontalScrollBar()->setValue( max_length - getNbVisibleCols() ); 1244 } 1245 1246 // Jump to the first line 1247 void AbstractLogView::jumpToTop() 1248 { 1249 // This will also trigger a scrollContents event 1250 verticalScrollBar()->setValue( 0 ); 1251 update(); // in case the screen hasn't moved 1252 } 1253 1254 // Jump to the last line 1255 void AbstractLogView::jumpToBottom() 1256 { 1257 const int new_top_line = 1258 qMax( logData->getNbLine() - getNbVisibleLines() + 1, 0LL ); 1259 1260 // This will also trigger a scrollContents event 1261 verticalScrollBar()->setValue( new_top_line ); 1262 update(); // in case the screen hasn't moved 1263 } 1264 1265 // Returns whether the character passed is a 'word' character 1266 inline bool AbstractLogView::isCharWord( char c ) 1267 { 1268 if ( ( ( c >= 'A' ) && ( c <= 'Z' ) ) || 1269 ( ( c >= 'a' ) && ( c <= 'z' ) ) || 1270 ( ( c >= '0' ) && ( c <= '9' ) ) || 1271 ( ( c == '_' ) ) ) 1272 return true; 1273 else 1274 return false; 1275 } 1276 1277 // Select the word under the given position 1278 void AbstractLogView::selectWordAtPosition( const QPoint& pos ) 1279 { 1280 const int x = pos.x(); 1281 const QString line = logData->getExpandedLineString( pos.y() ); 1282 1283 if ( isCharWord( line[x].toLatin1() ) ) { 1284 // Search backward for the first character in the word 1285 int currentPos = x; 1286 for ( ; currentPos > 0; currentPos-- ) 1287 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1288 break; 1289 // Exclude the first char of the line if needed 1290 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1291 currentPos++; 1292 int start = currentPos; 1293 1294 // Now search for the end 1295 currentPos = x; 1296 for ( ; currentPos < line.length() - 1; currentPos++ ) 1297 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1298 break; 1299 // Exclude the last char of the line if needed 1300 if ( ! isCharWord( line[currentPos].toLatin1() ) ) 1301 currentPos--; 1302 int end = currentPos; 1303 1304 selection_.selectPortion( pos.y(), start, end ); 1305 updateGlobalSelection(); 1306 update(); 1307 } 1308 } 1309 1310 // Update the system global (middle click) selection (X11 only) 1311 void AbstractLogView::updateGlobalSelection() 1312 { 1313 static QClipboard* const clipboard = QApplication::clipboard(); 1314 1315 // Updating it only for "non-trivial" (range or portion) selections 1316 if ( ! selection_.isSingleLine() ) 1317 clipboard->setText( selection_.getSelectedText( logData ), 1318 QClipboard::Selection ); 1319 } 1320 1321 // Create the pop-up menu 1322 void AbstractLogView::createMenu() 1323 { 1324 copyAction_ = new QAction( tr("&Copy"), this ); 1325 // No text as this action title depends on the type of selection 1326 connect( copyAction_, SIGNAL(triggered()), this, SLOT(copy()) ); 1327 1328 // For '#' and '*', shortcuts doesn't seem to work but 1329 // at least it displays them in the menu, we manually handle those keys 1330 // as keys event anyway (in keyPressEvent). 1331 findNextAction_ = new QAction(tr("Find &next"), this); 1332 findNextAction_->setShortcut( Qt::Key_Asterisk ); 1333 findNextAction_->setStatusTip( tr("Find the next occurence") ); 1334 connect( findNextAction_, SIGNAL(triggered()), 1335 this, SLOT( findNextSelected() ) ); 1336 1337 findPreviousAction_ = new QAction( tr("Find &previous"), this ); 1338 findPreviousAction_->setShortcut( tr("#") ); 1339 findPreviousAction_->setStatusTip( tr("Find the previous occurence") ); 1340 connect( findPreviousAction_, SIGNAL(triggered()), 1341 this, SLOT( findPreviousSelected() ) ); 1342 1343 addToSearchAction_ = new QAction( tr("&Add to search"), this ); 1344 addToSearchAction_->setStatusTip( 1345 tr("Add the selection to the current search") ); 1346 connect( addToSearchAction_, SIGNAL( triggered() ), 1347 this, SLOT( addToSearch() ) ); 1348 1349 popupMenu_ = new QMenu( this ); 1350 popupMenu_->addAction( copyAction_ ); 1351 popupMenu_->addSeparator(); 1352 popupMenu_->addAction( findNextAction_ ); 1353 popupMenu_->addAction( findPreviousAction_ ); 1354 popupMenu_->addAction( addToSearchAction_ ); 1355 } 1356 1357 void AbstractLogView::considerMouseHovering( int x_pos, int y_pos ) 1358 { 1359 int line = convertCoordToLine( y_pos ); 1360 if ( ( x_pos < leftMarginPx_ ) 1361 && ( line >= 0 ) 1362 && ( line < logData->getNbLine() ) ) { 1363 // Mouse moved in the margin, send event up 1364 // (possibly to highlight the overview) 1365 if ( line != lastHoveredLine_ ) { 1366 LOG(logDEBUG) << "Mouse moved in margin line: " << line; 1367 emit mouseHoveredOverLine( line ); 1368 lastHoveredLine_ = line; 1369 } 1370 } 1371 else { 1372 if ( lastHoveredLine_ != -1 ) { 1373 emit mouseLeftHoveringZone(); 1374 lastHoveredLine_ = -1; 1375 } 1376 } 1377 } 1378 1379 void AbstractLogView::updateScrollBars() 1380 { 1381 verticalScrollBar()->setRange( 0, std::max( 0LL, 1382 logData->getNbLine() - getNbVisibleLines() + 1 ) ); 1383 1384 const int hScrollMaxValue = std::max( 0, 1385 logData->getMaxLength() - getNbVisibleCols() + 1 ); 1386 horizontalScrollBar()->setRange( 0, hScrollMaxValue ); 1387 } 1388 1389 void AbstractLogView::drawTextArea( QPaintDevice* paint_device, int32_t delta_y ) 1390 { 1391 // LOG( logDEBUG ) << "devicePixelRatio: " << viewport()->devicePixelRatio(); 1392 // LOG( logDEBUG ) << "viewport size: " << viewport()->size().width(); 1393 // LOG( logDEBUG ) << "pixmap size: " << textPixmap.width(); 1394 // Repaint the viewport 1395 QPainter painter( paint_device ); 1396 // LOG( logDEBUG ) << "font: " << viewport()->font().family().toStdString(); 1397 // LOG( logDEBUG ) << "font painter: " << painter.font().family().toStdString(); 1398 1399 painter.setFont( this->font() ); 1400 1401 const int fontHeight = charHeight_; 1402 const int fontAscent = painter.fontMetrics().ascent(); 1403 const int nbCols = getNbVisibleCols(); 1404 const int paintDeviceHeight = paint_device->height() / viewport()->devicePixelRatio(); 1405 const int paintDeviceWidth = paint_device->width() / viewport()->devicePixelRatio(); 1406 const QPalette& palette = viewport()->palette(); 1407 std::shared_ptr<const FilterSet> filterSet = 1408 Persistent<FilterSet>( "filterSet" ); 1409 QColor foreColor, backColor; 1410 1411 static const QBrush normalBulletBrush = QBrush( Qt::white ); 1412 static const QBrush matchBulletBrush = QBrush( Qt::red ); 1413 static const QBrush markBrush = QBrush( "dodgerblue" ); 1414 1415 static const int SEPARATOR_WIDTH = 1; 1416 static const qreal BULLET_AREA_WIDTH = 11; 1417 static const int CONTENT_MARGIN_WIDTH = 1; 1418 static const int LINE_NUMBER_PADDING = 3; 1419 1420 // First check the lines to be drawn are within range (might not be the case if 1421 // the file has just changed) 1422 const int64_t lines_in_file = logData->getNbLine(); 1423 1424 if ( firstLine > lines_in_file ) 1425 firstLine = lines_in_file ? lines_in_file - 1 : 0; 1426 1427 const int64_t nbLines = std::min( 1428 static_cast<int64_t>( getNbVisibleLines() ), lines_in_file - firstLine ); 1429 1430 const int bottomOfTextPx = nbLines * fontHeight; 1431 1432 LOG(logDEBUG) << "drawing lines from " << firstLine << " (" << nbLines << " lines)"; 1433 LOG(logDEBUG) << "bottomOfTextPx: " << bottomOfTextPx; 1434 LOG(logDEBUG) << "Height: " << paintDeviceHeight; 1435 1436 // Lines to write 1437 const QStringList lines = logData->getExpandedLines( firstLine, nbLines ); 1438 1439 // First draw the bullet left margin 1440 painter.setPen(palette.color(QPalette::Text)); 1441 painter.fillRect( 0, 0, 1442 BULLET_AREA_WIDTH, paintDeviceHeight, 1443 Qt::darkGray ); 1444 1445 // Column at which the content should start (pixels) 1446 qreal contentStartPosX = BULLET_AREA_WIDTH + SEPARATOR_WIDTH; 1447 1448 // This is also the bullet zone width, used for marking clicks 1449 bulletZoneWidthPx_ = contentStartPosX; 1450 1451 // Update the length of line numbers 1452 const int nbDigitsInLineNumber = countDigits( maxDisplayLineNumber() ); 1453 1454 // Draw the line numbers area 1455 int lineNumberAreaStartX = 0; 1456 if ( lineNumbersVisible_ ) { 1457 int lineNumberWidth = charWidth_ * nbDigitsInLineNumber; 1458 int lineNumberAreaWidth = 1459 2 * LINE_NUMBER_PADDING + lineNumberWidth; 1460 lineNumberAreaStartX = contentStartPosX; 1461 1462 painter.setPen(palette.color(QPalette::Text)); 1463 /* Not sure if it looks good... 1464 painter.drawLine( contentStartPosX + lineNumberAreaWidth, 1465 0, 1466 contentStartPosX + lineNumberAreaWidth, 1467 viewport()->height() ); 1468 */ 1469 painter.fillRect( contentStartPosX - SEPARATOR_WIDTH, 0, 1470 lineNumberAreaWidth + SEPARATOR_WIDTH, paintDeviceHeight, 1471 Qt::lightGray ); 1472 1473 // Update for drawing the actual text 1474 contentStartPosX += lineNumberAreaWidth; 1475 } 1476 else { 1477 painter.fillRect( contentStartPosX - SEPARATOR_WIDTH, 0, 1478 SEPARATOR_WIDTH + 1, paintDeviceHeight, 1479 Qt::lightGray ); 1480 // contentStartPosX += SEPARATOR_WIDTH; 1481 } 1482 1483 painter.drawLine( BULLET_AREA_WIDTH, 0, 1484 BULLET_AREA_WIDTH, paintDeviceHeight - 1 ); 1485 1486 // This is the total width of the 'margin' (including line number if any) 1487 // used for mouse calculation etc... 1488 leftMarginPx_ = contentStartPosX + SEPARATOR_WIDTH; 1489 1490 // Then draw each line 1491 for (int i = 0; i < nbLines; i++) { 1492 const LineNumber line_index = i + firstLine; 1493 1494 // Position in pixel of the base line of the line to print 1495 const int yPos = i * fontHeight; 1496 const int xPos = contentStartPosX + CONTENT_MARGIN_WIDTH; 1497 1498 // string to print, cut to fit the length and position of the view 1499 const QString line = lines[i]; 1500 const QString cutLine = line.mid( firstCol, nbCols ); 1501 1502 if ( selection_.isLineSelected( line_index ) ) { 1503 // Reverse the selected line 1504 foreColor = palette.color( QPalette::HighlightedText ); 1505 backColor = palette.color( QPalette::Highlight ); 1506 painter.setPen(palette.color(QPalette::Text)); 1507 } 1508 else if ( filterSet->matchLine( logData->getLineString( line_index ), 1509 &foreColor, &backColor ) ) { 1510 // Apply a filter to the line 1511 } 1512 else { 1513 // Use the default colors 1514 foreColor = palette.color( QPalette::Text ); 1515 backColor = palette.color( QPalette::Base ); 1516 } 1517 1518 // Is there something selected in the line? 1519 int sel_start, sel_end; 1520 bool isSelection = 1521 selection_.getPortionForLine( line_index, &sel_start, &sel_end ); 1522 // Has the line got elements to be highlighted 1523 QList<QuickFindMatch> qfMatchList; 1524 bool isMatch = 1525 quickFindPattern_->matchLine( line, qfMatchList ); 1526 1527 if ( isSelection || isMatch ) { 1528 // We use the LineDrawer and its chunks because the 1529 // line has to be somehow highlighted 1530 LineDrawer lineDrawer( backColor ); 1531 1532 // First we create a list of chunks with the highlights 1533 QList<LineChunk> chunkList; 1534 int column = 0; // Current column in line space 1535 foreach( const QuickFindMatch match, qfMatchList ) { 1536 int start = match.startColumn() - firstCol; 1537 int end = start + match.length(); 1538 // Ignore matches that are *completely* outside view area 1539 if ( ( start < 0 && end < 0 ) || start >= nbCols ) 1540 continue; 1541 if ( start > column ) 1542 chunkList << LineChunk( column, start - 1, LineChunk::Normal ); 1543 column = qMin( start + match.length() - 1, nbCols ); 1544 chunkList << LineChunk( qMax( start, 0 ), column, 1545 LineChunk::Highlighted ); 1546 column++; 1547 } 1548 if ( column <= cutLine.length() - 1 ) 1549 chunkList << LineChunk( column, cutLine.length() - 1, LineChunk::Normal ); 1550 1551 // Then we add the selection if needed 1552 QList<LineChunk> newChunkList; 1553 if ( isSelection ) { 1554 sel_start -= firstCol; // coord in line space 1555 sel_end -= firstCol; 1556 1557 foreach ( const LineChunk chunk, chunkList ) { 1558 newChunkList << chunk.select( sel_start, sel_end ); 1559 } 1560 } 1561 else 1562 newChunkList = chunkList; 1563 1564 foreach ( const LineChunk chunk, newChunkList ) { 1565 // Select the colours 1566 QColor fore; 1567 QColor back; 1568 switch ( chunk.type() ) { 1569 case LineChunk::Normal: 1570 fore = foreColor; 1571 back = backColor; 1572 break; 1573 case LineChunk::Highlighted: 1574 fore = QColor( "black" ); 1575 back = QColor( "yellow" ); 1576 // fore = highlightForeColor; 1577 // back = highlightBackColor; 1578 break; 1579 case LineChunk::Selected: 1580 fore = palette.color( QPalette::HighlightedText ), 1581 back = palette.color( QPalette::Highlight ); 1582 break; 1583 } 1584 lineDrawer.addChunk ( chunk, fore, back ); 1585 } 1586 1587 lineDrawer.draw( painter, xPos, yPos, 1588 viewport()->width(), cutLine, 1589 CONTENT_MARGIN_WIDTH ); 1590 } 1591 else { 1592 // Nothing to be highlighted, we print the whole line! 1593 painter.fillRect( xPos - CONTENT_MARGIN_WIDTH, yPos, 1594 viewport()->width(), fontHeight, backColor ); 1595 // (the rectangle is extended on the left to cover the small 1596 // margin, it looks better (LineDrawer does the same) ) 1597 painter.setPen( foreColor ); 1598 painter.drawText( xPos, yPos + fontAscent, cutLine ); 1599 } 1600 1601 // Then draw the bullet 1602 painter.setPen( palette.color( QPalette::Text ) ); 1603 const qreal circleSize = 3; 1604 const qreal arrowHeight = 4; 1605 const qreal middleXLine = BULLET_AREA_WIDTH / 2; 1606 const qreal middleYLine = yPos + (fontHeight / 2); 1607 1608 const LineType line_type = lineType( line_index ); 1609 if ( line_type == Marked ) { 1610 // A pretty arrow if the line is marked 1611 const QPointF points[7] = { 1612 QPointF(1, middleYLine - 2), 1613 QPointF(middleXLine, middleYLine - 2), 1614 QPointF(middleXLine, middleYLine - arrowHeight), 1615 QPointF(BULLET_AREA_WIDTH - 1, middleYLine), 1616 QPointF(middleXLine, middleYLine + arrowHeight), 1617 QPointF(middleXLine, middleYLine + 2), 1618 QPointF(1, middleYLine + 2 ), 1619 }; 1620 1621 painter.setBrush( markBrush ); 1622 painter.drawPolygon( points, 7 ); 1623 } 1624 else { 1625 // For pretty circles 1626 painter.setRenderHint( QPainter::Antialiasing ); 1627 1628 if ( lineType( line_index ) == Match ) 1629 painter.setBrush( matchBulletBrush ); 1630 else 1631 painter.setBrush( normalBulletBrush ); 1632 painter.drawEllipse( middleXLine - circleSize, 1633 middleYLine - circleSize, 1634 circleSize * 2, circleSize * 2 ); 1635 } 1636 1637 // Draw the line number 1638 if ( lineNumbersVisible_ ) { 1639 static const QString lineNumberFormat( "%1" ); 1640 const QString& lineNumberStr = 1641 lineNumberFormat.arg( displayLineNumber( line_index ), 1642 nbDigitsInLineNumber ); 1643 painter.setPen( palette.color( QPalette::Text ) ); 1644 painter.drawText( lineNumberAreaStartX + LINE_NUMBER_PADDING, 1645 yPos + fontAscent, lineNumberStr ); 1646 } 1647 } // For each line 1648 1649 if ( bottomOfTextPx < paintDeviceHeight ) { 1650 // The lines don't cover the whole device 1651 painter.fillRect( contentStartPosX, bottomOfTextPx, 1652 paintDeviceWidth - contentStartPosX, 1653 paintDeviceHeight, palette.color( QPalette::Window ) ); 1654 } 1655 } 1656 1657 // Draw the "pull to follow" bar and return a pixmap. 1658 // The width is passed in "logic" pixels. 1659 QPixmap AbstractLogView::drawPullToFollowBar( int width, float pixel_ratio ) 1660 { 1661 static constexpr int barWidth = 40; 1662 QPixmap pixmap ( static_cast<float>( width ) * pixel_ratio, barWidth * 6.0 ); 1663 pixmap.setDevicePixelRatio( pixel_ratio ); 1664 pixmap.fill( this->palette().color( this->backgroundRole() ) ); 1665 const int nbBars = width / (barWidth * 2) + 1; 1666 1667 QPainter painter( &pixmap ); 1668 painter.setPen( QPen( QColor( 0, 0, 0, 0 ) ) ); 1669 painter.setBrush( QBrush( QColor( "lightyellow" ) ) ); 1670 1671 for ( int i = 0; i < nbBars; ++i ) { 1672 QPoint points[4] = { 1673 { (i*2+1)*barWidth, 0 }, 1674 { 0, (i*2+1)*barWidth }, 1675 { 0, (i+1)*2*barWidth }, 1676 { (i+1)*2*barWidth, 0 } 1677 }; 1678 painter.drawConvexPolygon( points, 4 ); 1679 } 1680 1681 return pixmap; 1682 } 1683 1684 void AbstractLogView::disableFollow() 1685 { 1686 emit followModeChanged( false ); 1687 followElasticHook_.hook( false ); 1688 } 1689 1690 namespace { 1691 1692 // Convert the length of the pull to follow bar to pixels 1693 int mapPullToFollowLength( int length ) 1694 { 1695 return length / 14; 1696 } 1697 1698 }; 1699