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119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <AdjustableHeaderWidget.h>
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#include <AzCore/Debug/Trace.h>
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#include <QHeaderView>
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#include <QTimer>
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namespace O3DE::ProjectManager
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{
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AdjustableHeaderWidget::AdjustableHeaderWidget( const QStringList& headerLabels,
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const QVector<int>& defaultHeaderWidths, int minHeaderWidth,
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const QVector<QHeaderView::ResizeMode>& resizeModes, QWidget* parent)
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: QTableWidget(parent)
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{
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setObjectName("adjustableHeaderWidget");
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
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setFixedHeight(s_headerWidgetHeight);
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m_header = horizontalHeader();
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m_header->setDefaultAlignment(Qt::AlignLeft);
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setColumnCount(headerLabels.count());
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setHorizontalHeaderLabels(headerLabels);
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AZ_Assert(defaultHeaderWidths.count() == columnCount(), "Default header widths does not match number of columns");
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AZ_Assert(resizeModes.count() == columnCount(), "Resize modesdoes not match number of columns");
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for (int column = 0; column < columnCount(); ++column)
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{
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m_header->resizeSection(column, defaultHeaderWidths[column]);
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m_header->setSectionResizeMode(column, resizeModes[column]);
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}
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m_header->setMinimumSectionSize(minHeaderWidth);
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m_header->setCascadingSectionResizes(true);
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connect(m_header, &QHeaderView::sectionResized, this, &AdjustableHeaderWidget::OnSectionResized);
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}
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void AdjustableHeaderWidget::OnSectionResized(int logicalIndex, int oldSize, int newSize)
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{
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const int headerCount = columnCount();
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const int headerWidth = m_header->width();
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const int totalSectionWidth = m_header->length();
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if (totalSectionWidth > headerWidth && newSize > oldSize)
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{
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int xPos = 0;
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int requiredWidth = 0;
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for (int i = 0; i < headerCount; i++)
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{
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if (i < logicalIndex)
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{
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xPos += m_header->sectionSize(i);
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}
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else if (i == logicalIndex)
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{
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xPos += newSize;
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}
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else if (i > logicalIndex)
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{
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if (m_header->sectionResizeMode(i) == QHeaderView::ResizeMode::Fixed)
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{
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requiredWidth += m_header->sectionSize(i);
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}
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else
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{
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requiredWidth += m_header->minimumSectionSize();
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}
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}
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}
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if (xPos + requiredWidth > headerWidth)
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{
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m_header->resizeSection(logicalIndex, oldSize);
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}
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}
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// wait till all columns resized
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QTimer::singleShot(0, [&]()
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{
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// only re-paint when the header and section widths have settled
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const int headerWidth = m_header->width();
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const int totalSectionWidth = m_header->length();
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if (totalSectionWidth == headerWidth)
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{
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emit sectionsResized();
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}
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});
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}
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QPair<int, int> AdjustableHeaderWidget::CalcColumnXBounds(int headerIndex) const
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{
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// Total the widths of all headers before this one in first and including it in second
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QPair<int, int> bounds(0, 0);
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for (int curIndex = 0; curIndex <= headerIndex; ++curIndex)
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{
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if (curIndex == headerIndex)
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{
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bounds.first = bounds.second;
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}
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bounds.second += m_header->sectionSize(curIndex);
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}
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return bounds;
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}
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} // namespace O3DE::ProjectManager
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