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136 lines
2.7 KiB
C++
136 lines
2.7 KiB
C++
/**
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* \file EmptyTable.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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* \author Jürgen Spitzmüller
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "EmptyTable.h"
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#include "support/debug.h"
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#include <QPainter>
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#include <QMouseEvent>
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/**
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* A simple widget for a quick "preview" in TabularCreateDialog
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*/
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unsigned int const cellheight = 20;
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unsigned int const cellwidth = 30;
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EmptyTable::EmptyTable(QWidget * parent, int rows, int columns)
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: QTableWidget(rows, columns, parent)
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{
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resetCellSize();
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setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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viewport()->resize(cellheight * rows, cellwidth * columns);
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setSelectionMode(QAbstractItemView::NoSelection);
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setEditTriggers(QAbstractItemView::NoEditTriggers);
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}
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QSize EmptyTable::sizeHint() const
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{
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return QSize(cellwidth * (2 + columnCount()), cellheight * (2 + rowCount()));
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}
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void EmptyTable::resetCellSize()
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{
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for(int i = 0; i < rowCount(); ++i)
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setRowHeight(i, cellheight);
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for(int i = 0; i < columnCount(); ++i)
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setColumnWidth(i, cellwidth);
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}
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void EmptyTable::paintCell(QPainter * p, int row, int col)
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{
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int const x2 = columnWidth(col) - 1;
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int const y2 = rowHeight(row) - 1;
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p->fillRect(0, 0, x2, y2, QColor("white"));
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p->drawLine(x2, 0, x2, y2);
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p->drawLine(0, y2, x2, y2);
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if (row + 1 != rowCount() || col + 1 != columnCount())
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return;
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// draw handle
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int const step = cellheight / 5;
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int const space = 4;
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int x = cellwidth - step;
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int const y = cellheight - space;
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int const ex = cellwidth - space;
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int ey = cellheight - step;
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while (x > space) {
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p->drawLine(x, y, ex, ey);
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x -= step;
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ey -= step;
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}
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}
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void EmptyTable::setNumberColumns(int nr_cols)
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{
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if (nr_cols < 1)
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return;
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if (nr_cols == columnCount())
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return;
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setColumnCount(nr_cols);
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resetCellSize();
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updateGeometry();
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// emit signal
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colsChanged(nr_cols);
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}
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void EmptyTable::setNumberRows(int nr_rows)
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{
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if (nr_rows < 1)
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return;
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if (nr_rows == rowCount())
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return;
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setRowCount(nr_rows);
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resetCellSize();
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updateGeometry();
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// emit signal
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rowsChanged(nr_rows);
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}
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void EmptyTable::mouseMoveEvent(QMouseEvent *ev)
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{
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int cc = columnCount();
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int rc = rowCount();
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int x = ev->x();
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int y = ev->y();
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int w = cellwidth * cc;
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int h = cellheight * rc;
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int wl = cellwidth * (cc - 1);
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int hl = cellheight * (rc - 1);
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if (x > w)
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setNumberColumns(cc + 1);
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if (y > h)
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setNumberRows(rc + 1);
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if (x < wl)
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setNumberColumns(cc - 1);
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if (y < hl)
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setNumberRows(rc - 1);
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}
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#include "moc_EmptyTable.cpp"
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namespace lyx {
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} // namespace lyx
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