| @@ -36,12 +36,19 | |||
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36 | 36 | |
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37 | 37 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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38 | 38 | |
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39 | QGraphicsTextItem *dummyTextItem = 0; | |
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39 | static QGraphicsTextItem *dummyTextItem = 0; | |
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40 | static const char *truncateMatchString = "&#?[0-9a-zA-Z]*;$"; | |
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41 | static QRegExp *truncateMatcher = 0; | |
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42 | ||
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40 | 43 | class StaticDummyTextDeleter |
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41 | 44 | { |
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42 | 45 | public: |
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43 | 46 | StaticDummyTextDeleter() {} |
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44 |
~StaticDummyTextDeleter() |
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47 | ~StaticDummyTextDeleter() | |
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48 | { | |
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49 | delete dummyTextItem; | |
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50 | delete truncateMatcher; | |
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51 | } | |
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45 | 52 | }; |
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46 | 53 | StaticDummyTextDeleter staticDummyTextDeleter; |
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47 | 54 | |
| @@ -416,23 +423,60 QString ChartPresenter::truncatedText(const QFont &font, const QString &text, qr | |||
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416 | 423 | qreal checkDimension = ((constraintOrientation == Qt::Horizontal) |
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417 | 424 | ? boundingRect.width() : boundingRect.height()); |
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418 | 425 | if (checkDimension > maxSize) { |
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419 | truncatedString.append("..."); | |
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420 | while (checkDimension > maxSize && truncatedString.length() > 3) { | |
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421 | // Crude truncation logic - simply remove any html tag completely | |
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422 | int removeIndex(-1); | |
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423 | int removeCount(1); | |
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424 | if (truncatedString.at(truncatedString.length() - 4) == QLatin1Char('>')) { | |
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425 | removeIndex = truncatedString.lastIndexOf(QLatin1Char('<')); | |
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426 | if (removeIndex != -1) | |
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427 | removeCount = truncatedString.length() - 3 - removeIndex; | |
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428 | } | |
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429 | if (removeIndex == -1) | |
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430 |
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431 | ||
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432 | truncatedString.remove(removeIndex, removeCount); | |
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433 | boundingRect = textBoundingRect(font, truncatedString, angle); | |
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426 | // It can be assumed that almost any amount of string manipulation is faster | |
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427 | // than calculating one bounding rectangle, so first prepare a list of truncated strings | |
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428 | // to try. | |
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429 | if (!truncateMatcher) | |
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430 | truncateMatcher = new QRegExp(truncateMatchString); | |
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431 | QVector<QString> testStrings(text.length()); | |
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432 | int count(0); | |
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433 | static QLatin1Char closeTag('>'); | |
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434 | static QLatin1Char openTag('<'); | |
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435 | static QLatin1Char semiColon(';'); | |
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436 | static QLatin1String ellipsis("..."); | |
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437 | while (truncatedString.length() > 1) { | |
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438 | int chopIndex(-1); | |
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439 | int chopCount(1); | |
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440 | QChar lastChar(truncatedString.at(truncatedString.length() - 1)); | |
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441 | ||
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442 | if (lastChar == closeTag) | |
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443 | chopIndex = truncatedString.lastIndexOf(openTag); | |
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444 | else if (lastChar == semiColon) | |
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445 | chopIndex = truncateMatcher->indexIn(truncatedString, 0); | |
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446 | ||
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447 | if (chopIndex != -1) | |
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448 | chopCount = truncatedString.length() - chopIndex; | |
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449 | truncatedString.chop(chopCount); | |
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450 | testStrings[count] = truncatedString + ellipsis; | |
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451 | count++; | |
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452 | } | |
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453 | ||
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454 | // Binary search for best fit | |
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455 | int minIndex(0); | |
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456 | int maxIndex(count - 1); | |
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457 | int bestIndex(count); | |
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458 | QRectF checkRect; | |
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459 | while (maxIndex >= minIndex) { | |
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460 | int mid = (maxIndex + minIndex) / 2; | |
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461 | checkRect = textBoundingRect(font, testStrings.at(mid), angle); | |
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434 | 462 | checkDimension = ((constraintOrientation == Qt::Horizontal) |
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435 |
? |
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463 | ? checkRect.width() : checkRect.height()); | |
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464 | if (checkDimension > maxSize) { | |
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465 | // Checked index too large, all under this are also too large | |
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466 | minIndex = mid + 1; | |
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467 | } else { | |
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468 | // Checked index fits, all over this also fit | |
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469 | maxIndex = mid - 1; | |
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470 | bestIndex = mid; | |
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471 | boundingRect = checkRect; | |
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472 | } | |
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473 | } | |
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474 | // Default to "..." if nothing fits | |
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475 | if (bestIndex == count) { | |
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476 | boundingRect = textBoundingRect(font, ellipsis, angle); | |
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477 | truncatedString = ellipsis; | |
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478 | } else { | |
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479 | truncatedString = testStrings.at(bestIndex); | |
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436 | 480 | } |
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437 | 481 | } |
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438 | 482 | |
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