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author | John Tapsell <john.tapsell.ext@basyskom.de> | 2010-11-15 11:55:06 (GMT) |
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committer | Jan-Arve Sæther <jan-arve.saether@nokia.com> | 2010-11-15 11:55:06 (GMT) |
commit | 604c51f1fc5c79b7fad12cda911b06b9e6e5005f (patch) | |
tree | 6960a2ee703b794c9ee45b9ba8f92a037f6a9374 /src/gui/graphicsview | |
parent | f9d1832c72f6717c977bafdff141225f25a3d576 (diff) | |
download | Qt-604c51f1fc5c79b7fad12cda911b06b9e6e5005f.zip Qt-604c51f1fc5c79b7fad12cda911b06b9e6e5005f.tar.gz Qt-604c51f1fc5c79b7fad12cda911b06b9e6e5005f.tar.bz2 |
Fix item alignment in layouts bigger than the items thay they contain
Task-number: QTBUG-13551
Task-number: QTBUG-7756
Merge-request: 894
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>
Diffstat (limited to 'src/gui/graphicsview')
-rw-r--r-- | src/gui/graphicsview/qgridlayoutengine.cpp | 92 | ||||
-rw-r--r-- | src/gui/graphicsview/qgridlayoutengine_p.h | 7 |
2 files changed, 62 insertions, 37 deletions
diff --git a/src/gui/graphicsview/qgridlayoutengine.cpp b/src/gui/graphicsview/qgridlayoutengine.cpp index b7fe5a0..f1055ba 100644 --- a/src/gui/graphicsview/qgridlayoutengine.cpp +++ b/src/gui/graphicsview/qgridlayoutengine.cpp @@ -166,7 +166,7 @@ void QGridLayoutRowData::reset(int count) hasIgnoreFlag = false; } -void QGridLayoutRowData::distributeMultiCells() +void QGridLayoutRowData::distributeMultiCells(const QGridLayoutRowInfo &rowInfo) { MultiCellMap::const_iterator i = multiCellMap.constBegin(); for (; i != multiCellMap.constEnd(); ++i) { @@ -185,7 +185,7 @@ void QGridLayoutRowData::distributeMultiCells() qreal extra = compare(box, totalBox, j); if (extra > 0.0) { calculateGeometries(start, end, box.q_sizes(j), dummy.data(), newSizes.data(), - 0, totalBox); + 0, totalBox, rowInfo); for (int k = 0; k < span; ++k) extras[k].q_sizes(j) = newSizes[k]; @@ -202,11 +202,12 @@ void QGridLayoutRowData::distributeMultiCells() void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSize, qreal *positions, qreal *sizes, qreal *descents, - const QGridLayoutBox &totalBox) + const QGridLayoutBox &totalBox, + const QGridLayoutRowInfo &rowInfo) { Q_ASSERT(end > start); - targetSize = qBound(totalBox.q_minimumSize, targetSize, totalBox.q_maximumSize); + targetSize = qMax(totalBox.q_minimumSize, targetSize); int n = end - start; QVarLengthArray<qreal> newSizes(n); @@ -246,16 +247,22 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz } } } else { - stealBox(start, end, PreferredSize, positions, sizes); + bool isLargerThanMaximum = (targetSize > totalBox.q_maximumSize); + if (isLargerThanMaximum) { + stealBox(start, end, MaximumSize, positions, sizes); + sumAvailable = targetSize - totalBox.q_maximumSize; + } else { + stealBox(start, end, PreferredSize, positions, sizes); + sumAvailable = targetSize - totalBox.q_preferredSize; + } - sumAvailable = targetSize - totalBox.q_preferredSize; if (sumAvailable > 0.0) { qreal sumCurrentAvailable = sumAvailable; bool somethingHasAMaximumSize = false; - qreal sumPreferredSizes = 0.0; + qreal sumSizes = 0.0; for (int i = 0; i < n; ++i) - sumPreferredSizes += sizes[i]; + sumSizes += sizes[i]; for (int i = 0; i < n; ++i) { if (ignore.testBit(start + i)) { @@ -265,7 +272,16 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz } const QGridLayoutBox &box = boxes.at(start + i); - qreal desired = box.q_maximumSize - box.q_preferredSize; + qreal boxSize; + + qreal desired; + if (isLargerThanMaximum) { + boxSize = box.q_maximumSize; + desired = rowInfo.boxes.value(start + i).q_maximumSize - boxSize; + } else { + boxSize = box.q_preferredSize; + desired = box.q_maximumSize - boxSize; + } if (desired == 0.0) { newSizes[i] = sizes[i]; factors[i] = 0.0; @@ -284,17 +300,17 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz } else if (stretch <= 0) { factors[i] = 0.0; } else { - qreal ultimatePreferredSize; - qreal ultimateSumPreferredSizes; - qreal x = ((stretch * sumPreferredSizes) - - (sumStretches * box.q_preferredSize)) + qreal ultimateSize; + qreal ultimateSumSizes; + qreal x = ((stretch * sumSizes) + - (sumStretches * boxSize)) / (sumStretches - stretch); if (x >= 0.0) { - ultimatePreferredSize = box.q_preferredSize + x; - ultimateSumPreferredSizes = sumPreferredSizes + x; + ultimateSize = boxSize + x; + ultimateSumSizes = sumSizes + x; } else { - ultimatePreferredSize = box.q_preferredSize; - ultimateSumPreferredSizes = (sumStretches * box.q_preferredSize) + ultimateSize = boxSize; + ultimateSumSizes = (sumStretches * boxSize) / stretch; } @@ -303,17 +319,17 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz (at the expense of the stretch factors, which are not fully respected during the transition). */ - ultimatePreferredSize = ultimatePreferredSize * 3 / 2; - ultimateSumPreferredSizes = ultimateSumPreferredSizes * 3 / 2; + ultimateSize = ultimateSize * 3 / 2; + ultimateSumSizes = ultimateSumSizes * 3 / 2; - qreal beta = ultimateSumPreferredSizes - sumPreferredSizes; + qreal beta = ultimateSumSizes - sumSizes; if (!beta) { factors[i] = 1; } else { qreal alpha = qMin(sumCurrentAvailable, beta); - qreal ultimateFactor = (stretch * ultimateSumPreferredSizes / sumStretches) - - (box.q_preferredSize); - qreal transitionalFactor = sumCurrentAvailable * (ultimatePreferredSize - box.q_preferredSize) / beta; + qreal ultimateFactor = (stretch * ultimateSumSizes / sumStretches) + - (boxSize); + qreal transitionalFactor = sumCurrentAvailable * (ultimateSize - boxSize) / beta; factors[i] = ((alpha * ultimateFactor) + ((beta - alpha) * transitionalFactor)) / beta; @@ -336,11 +352,16 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz if (newSizes[i] >= 0.0) continue; - const QGridLayoutBox &box = boxes.at(start + i); + qreal maxBoxSize; + if (isLargerThanMaximum) + maxBoxSize = rowInfo.boxes.value(start + i).q_maximumSize; + else + maxBoxSize = boxes.at(start + i).q_maximumSize; + qreal avail = sumCurrentAvailable * factors[i] / sumFactors; - if (sizes[i] + avail >= box.q_maximumSize) { - newSizes[i] = box.q_maximumSize; - sumCurrentAvailable -= box.q_maximumSize - sizes[i]; + if (sizes[i] + avail >= maxBoxSize) { + newSizes[i] = maxBoxSize; + sumCurrentAvailable -= maxBoxSize - sizes[i]; sumFactors -= factors[i]; keepGoing = (sumCurrentAvailable > 0.0); if (!keepGoing) @@ -1126,7 +1147,7 @@ QSizeF QGridLayoutEngine::sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHi //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as //constraints to find the row heights q_columnData.calculateGeometries(0, columnCount(), width, sizehint_xx.data(), sizehint_widths.data(), - 0, sizehint_totalBoxes[Hor]); + 0, sizehint_totalBoxes[Hor], q_infos[Hor]); ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], styleInfo, sizehint_xx.data(), sizehint_widths.data(), Qt::Vertical); sizeHintCalculated = true; } @@ -1143,7 +1164,7 @@ QSizeF QGridLayoutEngine::sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHi //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as //constraints to find the column widths q_rowData.calculateGeometries(0, rowCount(), height, sizehint_yy.data(), sizehint_heights.data(), - 0, sizehint_totalBoxes[Ver]); + 0, sizehint_totalBoxes[Ver], q_infos[Ver]); ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], styleInfo, sizehint_yy.data(), sizehint_heights.data(), Qt::Vertical); sizeHintCalculated = true; } @@ -1159,7 +1180,7 @@ QSizeF QGridLayoutEngine::sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHi sizehint_totalBoxes[Hor] = q_totalBoxes[Hor]; sizehint_totalBoxes[Ver] = q_totalBoxes[Ver]; } - } + } switch (which) { case Qt::MinimumSize: @@ -1617,7 +1638,8 @@ void QGridLayoutEngine::ensureColumnAndRowData(QGridLayoutRowData *rowData, QGri { rowData->reset(rowCount(orientation)); fillRowData(rowData, styleInfo, colPositions, colSizes, orientation); - rowData->distributeMultiCells(); + const QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical]; + rowData->distributeMultiCells(rowInfo); *totalBox = rowData->totalBox(0, rowCount(orientation)); //We have items whose width depends on their height } @@ -1686,22 +1708,22 @@ void QGridLayoutEngine::ensureGeometries(const QLayoutStyleInfo &styleInfo, //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as //constraints to find the row heights q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(), - 0, q_totalBoxes[Hor]); + 0, q_totalBoxes[Hor], q_infos[Hor] ); ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], styleInfo, q_xx.data(), q_widths.data(), Qt::Vertical); //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(), - q_descents.data(), q_totalBoxes[Ver]); + q_descents.data(), q_totalBoxes[Ver], q_infos[Ver]); } else { //We have items whose height depends on their width ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], styleInfo, NULL, NULL, Qt::Vertical); //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as //constraints to find the column widths q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(), - q_descents.data(), q_totalBoxes[Ver]); + q_descents.data(), q_totalBoxes[Ver], q_infos[Ver]); ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], styleInfo, q_yy.data(), q_heights.data(), Qt::Horizontal); //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(), - 0, q_totalBoxes[Hor]); + 0, q_totalBoxes[Hor], q_infos[Hor]); } } diff --git a/src/gui/graphicsview/qgridlayoutengine_p.h b/src/gui/graphicsview/qgridlayoutengine_p.h index 02c74b0..44efbba 100644 --- a/src/gui/graphicsview/qgridlayoutengine_p.h +++ b/src/gui/graphicsview/qgridlayoutengine_p.h @@ -224,13 +224,16 @@ public: typedef QMap<QPair<int, int>, QGridLayoutMultiCellData> MultiCellMap; +class QGridLayoutRowInfo; + class QGridLayoutRowData { public: void reset(int count); - void distributeMultiCells(); + void distributeMultiCells(const QGridLayoutRowInfo &rowInfo); void calculateGeometries(int start, int end, qreal targetSize, qreal *positions, qreal *sizes, - qreal *descents, const QGridLayoutBox &totalBox); + qreal *descents, const QGridLayoutBox &totalBox, + const QGridLayoutRowInfo &rowInfo); QGridLayoutBox totalBox(int start, int end) const; void stealBox(int start, int end, int which, qreal *positions, qreal *sizes); |