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Let the PLC master IO table columns be resized, and remember the layout

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The IO table of MasterPropertiesWidget -- the panel that opens when a
PLC master placed on a schematic is edited -- set every section to
QHeaderView::Stretch. Stretch spreads the sections evenly over the
widget and disables section dragging altogether, so the column
boundaries were permanently fixed: they could be neither widened nor
narrowed, and only the width of the whole panel had any effect.

Use QHeaderView::Interactive instead, with movable sections and a set
of default widths, so the columns can be dragged as they are everywhere
else in the application. The layout reached this way is written to
QSettings under masterpropertieswidget/plc-table-header-state on every
sectionResized and sectionMoved, and restored the next time the table
is built -- the same header-state trick the free and linked element
trees of this widget already use, except saved automatically rather
than only from the context menu.
This commit is contained in:
Kellermorph
2026-09-23 10:27:50 +02:00
parent ed0f800ab5
commit 4e361f93fe
1 changed files with 29 additions and 1 deletions
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sources/ui/masterpropertieswidget.cpp
+29 -1
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@@ -539,7 +539,35 @@ void MasterPropertiesWidget::updateUi()
tr("Type"), tr("Adresse"), tr("Fonction"),
tr("Commentaire"), tr("Réf. croisée"), tr("Bornes")
});
m_plc_table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
m_plc_table->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);
m_plc_table->horizontalHeader()->setSectionsMovable(true);
m_plc_table->horizontalHeader()->resizeSection(0, 120);
m_plc_table->horizontalHeader()->resizeSection(1, 100);
m_plc_table->horizontalHeader()->resizeSection(2, 150);
m_plc_table->horizontalHeader()->resizeSection(3, 150);
m_plc_table->horizontalHeader()->resizeSection(4, 100);
m_plc_table->horizontalHeader()->resizeSection(5, 120);
// Restore a previously saved column layout, if any
auto *plc_hdr = m_plc_table->horizontalHeader();
QSettings plc_settings;
const QVariant plc_hdr_state = plc_settings.value(
QStringLiteral("masterpropertieswidget/plc-table-header-state"));
if (!plc_hdr_state.isNull())
plc_hdr->restoreState(plc_hdr_state.toByteArray());
// Persist the column layout whenever the user resizes or moves a column
auto save_plc_header_state = [plc_hdr]()
{
QSettings settings;
settings.setValue(QStringLiteral("masterpropertieswidget/plc-table-header-state"),
plc_hdr->saveState());
};
connect(plc_hdr, &QHeaderView::sectionResized,
this, save_plc_header_state);
connect(plc_hdr, &QHeaderView::sectionMoved,
this, save_plc_header_state);
m_plc_table->setSelectionBehavior(QAbstractItemView::SelectItems);
m_plc_table->setSelectionMode(QAbstractItemView::ExtendedSelection);
m_plc_table->setMinimumHeight(200);