mirror of git://sigrok.org/pulseview
297 lines
8.1 KiB
C++
297 lines
8.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QPaintEvent>
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#include <QPainter>
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#include <QStyle>
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#include <QStyleOptionFrame>
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#include "wellarray.hpp"
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namespace pv {
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namespace widgets {
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void WellArray::paintEvent(QPaintEvent *event)
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{
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QRect r = event->rect();
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int cx = r.x();
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int cy = r.y();
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int ch = r.height();
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int cw = r.width();
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int colfirst = columnAt(cx);
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int collast = columnAt(cx + cw);
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int rowfirst = rowAt(cy);
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int rowlast = rowAt(cy + ch);
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if (isRightToLeft()) {
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int t = colfirst;
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colfirst = collast;
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collast = t;
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}
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QPainter painter(this);
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QPainter *p = &painter;
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QRect rect(0, 0, cellWidth(), cellHeight());
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if (collast < 0 || collast >= ncols)
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collast = ncols-1;
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if (rowlast < 0 || rowlast >= nrows)
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rowlast = nrows-1;
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// Go through the rows
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for (int r = rowfirst; r <= rowlast; ++r) {
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// get row position and height
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int rowp = rowY(r);
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// Go through the columns in the row r
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// if we know from where to where, go through [colfirst, collast],
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// else go through all of them
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for (int c = colfirst; c <= collast; ++c) {
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// get position and width of column c
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int colp = columnX(c);
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// Translate painter and draw the cell
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rect.translate(colp, rowp);
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paintCell(p, r, c, rect);
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rect.translate(-colp, -rowp);
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}
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}
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}
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struct WellArrayData {
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QBrush *brush;
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};
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WellArray::WellArray(int rows, int cols, QWidget *parent)
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: QWidget(parent)
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,nrows(rows), ncols(cols)
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{
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d = nullptr;
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setFocusPolicy(Qt::StrongFocus);
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cellw = 28;
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cellh = 24;
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curCol = 0;
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curRow = 0;
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selCol = -1;
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selRow = -1;
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}
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QSize WellArray::sizeHint() const
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{
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ensurePolished();
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return gridSize().boundedTo(QSize(640, 480));
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}
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void WellArray::paintCell(QPainter* p, int row, int col, const QRect &rect)
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{
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int b = 3; //margin
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const QPalette& g = palette();
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QStyleOptionFrame opt;
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int dfw = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
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opt.lineWidth = dfw;
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opt.midLineWidth = 1;
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opt.rect = rect.adjusted(b, b, -b, -b);
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opt.palette = g;
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opt.state = QStyle::State_Enabled | QStyle::State_Sunken;
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style()->drawPrimitive(QStyle::PE_Frame, &opt, p, this);
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b += dfw;
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if ((row == curRow) && (col == curCol)) {
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if (hasFocus()) {
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QStyleOptionFocusRect opt;
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opt.palette = g;
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opt.rect = rect;
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opt.state = QStyle::State_None | QStyle::State_KeyboardFocusChange;
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style()->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, p, this);
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}
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}
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paintCellContents(p, row, col, opt.rect.adjusted(dfw, dfw, -dfw, -dfw));
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}
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/*!
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Reimplement this function to change the contents of the well array.
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*/
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void WellArray::paintCellContents(QPainter *p, int row, int col, const QRect &r)
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{
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if (d) {
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p->fillRect(r, d->brush[row*numCols()+col]);
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} else {
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p->fillRect(r, Qt::white);
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p->setPen(Qt::black);
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p->drawLine(r.topLeft(), r.bottomRight());
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p->drawLine(r.topRight(), r.bottomLeft());
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}
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}
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void WellArray::mousePressEvent(QMouseEvent *event)
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{
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// The current cell marker is set to the cell the mouse is pressed in
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QPoint pos = event->pos();
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setCurrent(rowAt(pos.y()), columnAt(pos.x()));
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}
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void WellArray::mouseReleaseEvent(QMouseEvent * /* event */)
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{
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// The current cell marker is set to the cell the mouse is clicked in
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setSelected(curRow, curCol);
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}
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/*
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Sets the cell currently having the focus. This is not necessarily
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the same as the currently selected cell.
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*/
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void WellArray::setCurrent(int row, int col)
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{
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if ((curRow == row) && (curCol == col))
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return;
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if (row < 0 || col < 0)
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row = col = -1;
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int oldRow = curRow;
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int oldCol = curCol;
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curRow = row;
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curCol = col;
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updateCell(oldRow, oldCol);
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updateCell(curRow, curCol);
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}
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/*
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Sets the currently selected cell to \a row, \a column. If \a row or
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\a column are less than zero, the current cell is unselected.
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Does not set the position of the focus indicator.
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*/
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void WellArray::setSelected(int row, int col)
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{
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int oldRow = selRow;
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int oldCol = selCol;
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if (row < 0 || col < 0)
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row = col = -1;
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selCol = col;
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selRow = row;
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updateCell(oldRow, oldCol);
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updateCell(selRow, selCol);
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if (row >= 0)
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selected(row, col);
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}
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void WellArray::focusInEvent(QFocusEvent*)
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{
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updateCell(curRow, curCol);
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}
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void WellArray::setCellBrush(int row, int col, const QBrush &b)
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{
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if (!d) {
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d = new WellArrayData;
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int i = numRows()*numCols();
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d->brush = new QBrush[i];
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}
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if (row >= 0 && row < numRows() && col >= 0 && col < numCols())
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d->brush[row*numCols()+col] = b;
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}
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/*
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Returns the brush set for the cell at \a row, \a column. If no brush is
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set, Qt::NoBrush is returned.
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*/
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QBrush WellArray::cellBrush(int row, int col)
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{
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if (d && row >= 0 && row < numRows() && col >= 0 && col < numCols())
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return d->brush[row*numCols()+col];
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return Qt::NoBrush;
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}
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/*!\reimp
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*/
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void WellArray::focusOutEvent(QFocusEvent*)
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{
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updateCell(curRow, curCol);
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}
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/*\reimp
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*/
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void WellArray::keyPressEvent(QKeyEvent* event)
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{
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switch (event->key()) { // Look at the key code
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case Qt::Key_Left: // If 'left arrow'-key,
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if (curCol > 0) // and cr't not in leftmost col
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setCurrent(curRow, curCol - 1); // set cr't to next left column
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break;
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case Qt::Key_Right: // Correspondingly...
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if (curCol < numCols()-1)
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setCurrent(curRow, curCol + 1);
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break;
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case Qt::Key_Up:
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if (curRow > 0)
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setCurrent(curRow - 1, curCol);
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break;
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case Qt::Key_Down:
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if (curRow < numRows()-1)
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setCurrent(curRow + 1, curCol);
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break;
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case Qt::Key_Space:
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setSelected(curRow, curCol);
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break;
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default: // If not an interesting key,
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event->ignore(); // we don't accept the event
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return;
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}
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}
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} // namespace widgets
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} // namespace pv
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