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6742f5632d
Add a row of line edits between the table header and the actual content of the table in the browse tab. Show one input widget per table column in this row. Add a live search which hides any table rows which do not fit to the current filter settings. Why add this to the parital-data-fetch branch? Because this is an attempt to get rid of the find dialog which is broken again and not even worth fixing. Also there is not much to break in this branch at the moment ;)
79 lines
3.0 KiB
C++
79 lines
3.0 KiB
C++
#include "FilterTableHeader.h"
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#include <QLineEdit>
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#include <QTableView>
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#include <QScrollBar>
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FilterTableHeader::FilterTableHeader(QTableView* parent) :
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QHeaderView(Qt::Horizontal, parent)
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{
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// Activate the click signals to allow sorting
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setClickable(true);
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// Do some connects: Basically just resize and reposition the input widgets whenever anything changes
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connect(this, SIGNAL(sectionResized(int,int,int)), this, SLOT(adjustPositions()));
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connect(parent->horizontalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(adjustPositions()));
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connect(parent->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(adjustPositions()));
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}
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void FilterTableHeader::generateFilters(int number)
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{
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// Delete all the current filter widgets
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for(int i=0;i<filterWidgets.size();i++)
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delete filterWidgets.at(i);
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filterWidgets.clear();
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// And generate a bunch of new ones
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for(int i=0;i<number;i++)
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{
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QLineEdit* l = new QLineEdit(this);
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l->setPlaceholderText(tr("Filter"));
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l->setProperty("column", i); // Store the column number for later use
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l->setVisible(i>0); // This hides the first input widget which belongs to the hidden rowid column
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connect(l, SIGNAL(textChanged(QString)), this, SLOT(inputChanged(QString)));
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filterWidgets.push_back(l);
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}
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// Position them correctly
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adjustPositions();
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}
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QSize FilterTableHeader::sizeHint() const
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{
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// For the size hint just take the value of the standard implementation and add the height of a input widget to it if necessary
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QSize s = QHeaderView::sizeHint();
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if(filterWidgets.size())
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s.setHeight(s.height() + filterWidgets.at(0)->sizeHint().height() + 5); // The 5 adds just adds some extra space
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return s;
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}
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void FilterTableHeader::updateGeometries()
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{
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// If there are any input widgets add a viewport margin to the header to generate some empty space for them which is not affected by scrolling
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if(filterWidgets.size())
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setViewportMargins(0, 0, 0, filterWidgets.at(0)->sizeHint().height());
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else
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setViewportMargins(0, 0, 0, 0);
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// Now just call the parent implementation and reposition the input widgets
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QHeaderView::updateGeometries();
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adjustPositions();
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}
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void FilterTableHeader::adjustPositions()
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{
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// Loop through all widgets
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for(int i=0;i<filterWidgets.size();++i)
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{
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// Get the current widget, move it and reisize it
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QWidget* w = filterWidgets.at(i);
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w->move(sectionPosition(i) - offset(), filterWidgets.at(i)->sizeHint().height() + 2); // The two adds some extra space between the header label and the input widget
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w->resize(sectionSize(i), filterWidgets.at(i)->sizeHint().height());
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}
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}
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void FilterTableHeader::inputChanged(const QString& new_value)
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{
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// Just get the column number and the new value and send them to anybody interested in filter changes
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emit filterChanged(sender()->property("column").toInt(), new_value);
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}
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