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/*
Copyright (C) 2012 - 2013 Evan Teran
evan.teran@gmail.com
Copyright (C) 2006 Michel Marti
mma@objectxp.com
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 2 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, see <http://www.gnu.org/licenses/>.
*/
#include "kcalc_bitset.h"
#include "bitbutton.h"
#include <QButtonGroup>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QPainter>
// TODO: I think it would actually be appropriate to use a std::bitset<64>
// for the internal representation of this class perhaps
// the only real caveat is the conversion to/from quint64
//------------------------------------------------------------------------------
// Name: paintEvent
// Desc: draws the button
//------------------------------------------------------------------------------
void BitButton::paintEvent(QPaintEvent *) {
QPainter painter(this);
QPen pen(palette().text(), 2);
pen.setJoinStyle(Qt::MiterJoin);
painter.setPen(pen);
if (on_) {
painter.setBrush(palette().text());
} else {
painter.setBrush(palette().base());
}
painter.drawRect(rect().adjusted(1, 1, -1, -1));
}
//------------------------------------------------------------------------------
// Name: KCalcBitset
// Desc: constructor
//------------------------------------------------------------------------------
KCalcBitset::KCalcBitset(QWidget *parent) : QFrame(parent), value_(0) {
setFrameStyle(QFrame::Panel | QFrame::Sunken);
bit_button_group_ = new QButtonGroup(this);
connect(bit_button_group_, static_cast<void (QButtonGroup::*)(int)>(&QButtonGroup::buttonClicked), this, &KCalcBitset::slotToggleBit);
// smaller label font
QFont fnt = font();
if (fnt.pointSize() > 6) {
fnt.setPointSize(fnt.pointSize() - 1);
}
// main layout
QGridLayout *layout = new QGridLayout(this);
layout->setMargin(2);
layout->setSpacing(0);
// create bits
int bitCounter = 63;
for (int rows = 0; rows < 2; rows++) {
for (int cols = 0; cols < 4; cols++) {
// two rows of four words
QHBoxLayout *const wordlayout = new QHBoxLayout();
wordlayout->setMargin(2);
wordlayout->setSpacing(2);
layout->addLayout(wordlayout, rows, cols);
for (int bit = 0; bit < 8; bit++) {
BitButton *const tmpBitButton = new BitButton(this);
wordlayout->addWidget(tmpBitButton);
bit_button_group_->addButton(tmpBitButton, bitCounter);
bitCounter--;
}
// label word
QLabel *label = new QLabel(this);
label->setText(QString::number(bitCounter + 1));
label->setFont(fnt);
wordlayout->addWidget(label);
}
}
}
//------------------------------------------------------------------------------
// Name: setValue
// Desc: set the value of the bitset based on an unsigned 64-bit number
//------------------------------------------------------------------------------
void KCalcBitset::setValue(quint64 value) {
if (value_ == value) {
// don't waste time if there was no change..
return;
}
value_ = value;
// set each bit button
for (int i = 0; i < 64; i++) {
if(BitButton *bb = qobject_cast<BitButton*>(bit_button_group_->button(i))) {
bb->setOn(value & 1);
}
value >>= 1;
}
}
//------------------------------------------------------------------------------
// Name: getValue
// Desc: returns the bitset value as an unsigned 64-bit number
//------------------------------------------------------------------------------
quint64 KCalcBitset::getValue() const {
return value_;
}
//------------------------------------------------------------------------------
// Name: slotToggleBit
// Desc: inverts the value of a single bit
//------------------------------------------------------------------------------
void KCalcBitset::slotToggleBit(int bit) {
const quint64 nv = getValue() ^(1LL << bit);
setValue(nv);
emit valueChanged(value_);
}
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