Resizable Headers for Gem Catalog and Gem Repo Screen (#6885)

* Initial mostly working attempt at resizable headers Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Add const and constexpr to variables Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Add header tracking for buttons, display items based on header scrollbar position, fix some spacing issues Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Correct styling for adjustable header, and intending header section and alingned item content with header text Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Prevent header resizing larger than table width. Signed-off-by: Alex Peterson <26804013+AMZN-alexpete@users.noreply.github.com> * Fix resize graphical glitching Signed-off-by: Alex Peterson <26804013+AMZN-alexpete@users.noreply.github.com> * Remove unecessary qss Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Removed necessary headers Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Remove extra nl and old comment Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Address PR feedback Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Removed unused variables Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Change variable to constexpr Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Remove AUTOMOC from headers, set background color of Gem Catalog to 333333 and adjustable header to transparent Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Change to using update instead of repaint when sections are resized Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> * Change temp directory creation on for gradle Signed-off-by: nggieber <52797929+AMZN-nggieber@users.noreply.github.com> Co-authored-by: Alex Peterson <26804013+AMZN-alexpete@users.noreply.github.com>
2022-01-28 10:05:03 -08:00
parent 0ba1cff08e
commit 24086ab394
41 changed files with 437 additions and 158 deletions
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) Contributors to the Open 3D Engine Project.
+ * For complete copyright and license terms please see the LICENSE at the root of this distribution.
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ *
+ */
+
+#include <AdjustableHeaderWidget.h>
+#include <AzCore/Debug/Trace.h>
+
+#include <QHeaderView>
+#include <QTimer>
+
+namespace O3DE::ProjectManager
+{
+    AdjustableHeaderWidget::AdjustableHeaderWidget( const QStringList& headerLabels,
+        const QVector<int>& defaultHeaderWidths, int minHeaderWidth,
+        const QVector<QHeaderView::ResizeMode>& resizeModes, QWidget* parent)
+        : QTableWidget(parent)
+    {
+        setObjectName("adjustableHeaderWidget");
+        setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
+        setFixedHeight(s_headerWidgetHeight);
+
+        m_header = horizontalHeader();
+        m_header->setDefaultAlignment(Qt::AlignLeft);
+
+        setColumnCount(headerLabels.count());
+        setHorizontalHeaderLabels(headerLabels);
+
+        AZ_Assert(defaultHeaderWidths.count() == columnCount(), "Default header widths does not match number of columns");
+        AZ_Assert(resizeModes.count() == columnCount(), "Resize modesdoes not match number of columns");
+
+        for (int column = 0; column < columnCount(); ++column)
+        {
+            m_header->resizeSection(column, defaultHeaderWidths[column]);
+            m_header->setSectionResizeMode(column, resizeModes[column]);
+        }
+
+        m_header->setMinimumSectionSize(minHeaderWidth);
+        m_header->setCascadingSectionResizes(true);
+
+        connect(m_header, &QHeaderView::sectionResized, this, &AdjustableHeaderWidget::OnSectionResized);
+    }
+
+    void AdjustableHeaderWidget::OnSectionResized(int logicalIndex, int oldSize, int newSize)
+    {
+        const int headerCount = columnCount(); 
+        const int headerWidth = m_header->width();
+        const int totalSectionWidth = m_header->length();
+
+        if (totalSectionWidth > headerWidth && newSize > oldSize)
+        {
+            int xPos = 0;
+            int requiredWidth = 0;
+
+            for (int i = 0; i < headerCount; i++)
+            {
+                if (i < logicalIndex)
+                {
+                    xPos += m_header->sectionSize(i);
+                }
+                else if (i == logicalIndex)
+                {
+                    xPos += newSize;
+                }
+                else if (i > logicalIndex)
+                {
+                    if (m_header->sectionResizeMode(i) == QHeaderView::ResizeMode::Fixed)
+                    {
+                        requiredWidth += m_header->sectionSize(i);
+                    }
+                    else
+                    {
+                        requiredWidth += m_header->minimumSectionSize();
+                    }
+                }
+            }
+
+            if (xPos + requiredWidth > headerWidth)
+            {
+                m_header->resizeSection(logicalIndex, oldSize);
+            }
+        }
+
+        // wait till all columns resized
+        QTimer::singleShot(0, [&]()
+        {
+            // only re-paint when the header and section widths have settled
+            const int headerWidth = m_header->width();
+            const int totalSectionWidth = m_header->length();
+            if (totalSectionWidth == headerWidth)
+            {
+                emit sectionsResized();
+            }
+        });
+    }
+
+    QPair<int, int> AdjustableHeaderWidget::CalcColumnXBounds(int headerIndex) const
+    {
+        // Total the widths of all headers before this one in first and including it in second
+        QPair<int, int> bounds(0, 0);
+
+        for (int curIndex = 0; curIndex <= headerIndex; ++curIndex)
+        {
+            if (curIndex == headerIndex)
+            {
+                bounds.first = bounds.second;
+            }
+            bounds.second += m_header->sectionSize(curIndex);
+        }
+
+        return bounds;
+    }
+
+
+} // namespace O3DE::ProjectManager