| @@ -36,12 +36,19 | |||||
| 36 |
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36 | |||
| 37 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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37 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | |
| 38 |
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38 | |||
| 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 | ||||
| 40 | class StaticDummyTextDeleter |
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43 | class StaticDummyTextDeleter | |
| 41 | { |
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44 | { | |
| 42 | public: |
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45 | public: | |
| 43 | StaticDummyTextDeleter() {} |
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46 | StaticDummyTextDeleter() {} | |
| 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 | } | |||
| 45 | }; |
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52 | }; | |
| 46 | StaticDummyTextDeleter staticDummyTextDeleter; |
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53 | StaticDummyTextDeleter staticDummyTextDeleter; | |
| 47 |
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54 | |||
| @@ -416,23 +423,60 QString ChartPresenter::truncatedText(const QFont &font, const QString &text, qr | |||||
| 416 | qreal checkDimension = ((constraintOrientation == Qt::Horizontal) |
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423 | qreal checkDimension = ((constraintOrientation == Qt::Horizontal) | |
| 417 | ? boundingRect.width() : boundingRect.height()); |
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424 | ? boundingRect.width() : boundingRect.height()); | |
| 418 | if (checkDimension > maxSize) { |
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425 | if (checkDimension > maxSize) { | |
| 419 | truncatedString.append("..."); |
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426 | // It can be assumed that almost any amount of string manipulation is faster | |
| 420 | while (checkDimension > maxSize && truncatedString.length() > 3) { |
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427 | // than calculating one bounding rectangle, so first prepare a list of truncated strings | |
| 421 | // Crude truncation logic - simply remove any html tag completely |
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428 | // to try. | |
| 422 | int removeIndex(-1); |
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429 | if (!truncateMatcher) | |
| 423 | int removeCount(1); |
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430 | truncateMatcher = new QRegExp(truncateMatchString); | |
| 424 | if (truncatedString.at(truncatedString.length() - 4) == QLatin1Char('>')) { |
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431 | QVector<QString> testStrings(text.length()); | |
| 425 | removeIndex = truncatedString.lastIndexOf(QLatin1Char('<')); |
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432 | int count(0); | |
| 426 | if (removeIndex != -1) |
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433 | static QLatin1Char closeTag('>'); | |
| 427 | removeCount = truncatedString.length() - 3 - removeIndex; |
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434 | static QLatin1Char openTag('<'); | |
| 428 | } |
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435 | static QLatin1Char semiColon(';'); | |
| 429 | if (removeIndex == -1) |
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436 | static QLatin1String ellipsis("..."); | |
| 430 |
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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 | } | |||
| 431 |
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453 | |||
| 432 | truncatedString.remove(removeIndex, removeCount); |
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454 | // Binary search for best fit | |
| 433 | boundingRect = textBoundingRect(font, truncatedString, angle); |
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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); | |||
| 434 | checkDimension = ((constraintOrientation == Qt::Horizontal) |
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462 | checkDimension = ((constraintOrientation == Qt::Horizontal) | |
| 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); | |||
| 436 | } |
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480 | } | |
| 437 | } |
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481 | } | |
| 438 |
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482 | |||
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