From 83cee4e365992ae1eb83900a1e02b5dbc80e9ecb Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Fri, 11 Sep 2015 13:46:34 -0500 Subject: Move seven segment display widget to common widget directory --- clients/tde/src/widgets/sevensegment.cpp | 456 +++++++++++++++++++++++++++++++ 1 file changed, 456 insertions(+) create mode 100644 clients/tde/src/widgets/sevensegment.cpp (limited to 'clients/tde/src/widgets/sevensegment.cpp') diff --git a/clients/tde/src/widgets/sevensegment.cpp b/clients/tde/src/widgets/sevensegment.cpp new file mode 100644 index 0000000..f97c428 --- /dev/null +++ b/clients/tde/src/widgets/sevensegment.cpp @@ -0,0 +1,456 @@ +/* + * Remote Laboratory Seven Segment Display Widget + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * (c) 2012 - 2015 Timothy Pearson + * Raptor Engineering + * http://www.raptorengineeringinc.com + */ + +#include + +#include + +#include "sevensegment.h" + +Display7Segment::Display7Segment( TQWidget *parent, const char *name ) + : TQFrame( parent, name ) +{ + init(); +} + +Display7Segment::~Display7Segment() { + free(m_prevSegments); + free(m_currentSegments); +} + +void Display7Segment::init() { + setFrameStyle(TQFrame::Box | TQFrame::Raised); + prevSegments = 0; + val = 0; + smallPoint = TRUE; + setSegmentStyle(Flat); + m_prevSegments = (char*)malloc(sizeof(char)*9); + m_currentSegments = (char*)malloc(sizeof(char)*9); + m_prevSegments[0] = 99; + m_currentSegments[0] = 99; + setSizePolicy(TQSizePolicy(TQSizePolicy::Minimum, TQSizePolicy::Minimum)); +} + +void Display7Segment::setLitSegments(unsigned char segs) { + // This produces an array of up to 10 chars, with each char being the number of a lit segment, and the list being terminated with the number 99 + // The bit input in segs is active high + // The bit sequence, MSB to LSB, is dp a b c d e f g + // Segment letters are taken from ug130.pdf + + if (prevSegments != segs) { + int i = 0; + if (segs & 0x80) { m_currentSegments[i] = 7; i++; } + if (segs & 0x40) { m_currentSegments[i] = 0; i++; } + if (segs & 0x20) { m_currentSegments[i] = 2; i++; } + if (segs & 0x10) { m_currentSegments[i] = 5; i++; } + if (segs & 0x08) { m_currentSegments[i] = 6; i++; } + if (segs & 0x04) { m_currentSegments[i] = 4; i++; } + if (segs & 0x02) { m_currentSegments[i] = 1; i++; } + if (segs & 0x01) { m_currentSegments[i] = 3; i++; } + + m_currentSegments[i] = 99; + + update(); + } + + prevSegments = segs; +} + +void Display7Segment::drawContents( TQPainter *p ) +{ + // Draw all segments + TQPoint pos; + int digitSpace = smallPoint ? 2 : 1; + int xSegLen = width()*5/(1*(5 + digitSpace) + digitSpace); + int ySegLen = height()*5/12; + int segLen = ySegLen > xSegLen ? xSegLen : ySegLen; + int xAdvance = segLen*( 5 + 1 )/5; + int xOffset = ( width() - xAdvance + segLen/5 )/2; + int yOffset = ( height() - segLen*2 )/2; + + pos = TQPoint(xOffset, yOffset); + drawDigit(pos, *p, segLen, m_currentSegments); +} + +TQSize Display7Segment::sizeHint() const { + return TQSize(10 + 9 * (1 + (smallPoint ? 0 : 1)), 23); +} + +void Display7Segment::setSegmentStyle( SegmentStyle s ) { + fill = (s == Flat || s == Filled); + shadow = (s == Outline || s == Filled); + update(); +} + +Display7Segment::SegmentStyle Display7Segment::segmentStyle() const { + Q_ASSERT(fill || shadow); + if (!fill && shadow) { + return Outline; + } + if (fill && shadow) { + return Filled; + } + return Flat; +} + +static void addPoint( TQPointArray &a, const TQPoint &p ) { + uint n = a.size(); + a.resize(n + 1); + a.setPoint(n, p); +} + +void Display7Segment::drawDigit(const TQPoint &pos, TQPainter &p, int segLen, const char *newSegs) { + char updates[20][2]; // Can hold 2 times number of segments, only + // first 10 used if segment table is correct + int nErases; + int nUpdates; + const char *segs; + int i,j; + + const char erase = 0; + const char draw = 1; +// const char leaveAlone = 2; + + segs = m_prevSegments; + for ( nErases=0; segs[nErases] != 99; nErases++ ) { + updates[nErases][0] = erase; // Get segments to erase to + updates[nErases][1] = segs[nErases]; // remove old char + } + nUpdates = nErases; + segs = newSegs; + for(i = 0 ; segs[i] != 99 ; i++) { + for ( j=0; j