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candatagrid.cpp
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candatagrid.cpp
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#include "candatagrid.h"
#include "ui_candatagrid.h"
#include <QPainter>
#include <QDebug>
#include <QMouseEvent>
CANDataGrid::CANDataGrid(QWidget *parent) :
QWidget(parent),
ui(new Ui::CANDataGrid)
{
ui->setupUi(this);
memset(data, 0, 8);
memset(refData, 0, 8);
memset(usedData, 0, 8);
for (int x = 0; x < 8; x++)
for (int y = 0; y < 8; y++)
textStates[x][y] = GridTextState::NORMAL;
}
CANDataGrid::~CANDataGrid()
{
delete ui;
}
void CANDataGrid::mousePressEvent(QMouseEvent *event)
{
QPoint clickedPoint = event->pos();
if (event->button() == Qt::LeftButton)
{
//qDebug() << "Mouse Loc " << clickedPoint;
clickedPoint -= upperLeft;
if (clickedPoint.x() < 0 || clickedPoint.y() < 0)
{
//qDebug() << "Clicked outside the grid you wanker";
return;
}
int x = clickedPoint.x() / gridSize.x();
int y = clickedPoint.y() / gridSize.y();
//qDebug() << "Grid square clicked " << x << " " << y;
emit gridClicked(x,y);
}
}
void CANDataGrid::setCellTextState(int x, int y, GridTextState state)
{
if (x < 0) return;
if (x > 7) return;
if (y < 0) return;
if (y > 7) return;
textStates[x][y] = state;
this->update();
}
GridTextState CANDataGrid::geCellTextState(int x, int y)
{
if (x < 0) return GridTextState::NORMAL;
if (x > 7) return GridTextState::NORMAL;
if (y < 0) return GridTextState::NORMAL;
if (y > 7) return GridTextState::NORMAL;
return textStates[x][y];
}
void CANDataGrid::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
qDebug() << "CANDataGrid Paint Event";
int x, y;
unsigned char prevByte, thisByte;
bool thisBit, prevBit;
QBrush blackBrush, whiteBrush, redBrush, greenBrush, grayBrush;
QPainter painter(this);
QRect viewport = painter.viewport();
int xSpan = viewport.right() - viewport.left();
int ySpan = viewport.bottom() - viewport.top();
qDebug() << "XSpan" << xSpan << " YSpan " << ySpan;
int xSector = xSpan / 10;
int ySector = ySpan / 10;
blackBrush = QBrush(Qt::black);
whiteBrush = QBrush(Qt::white);
redBrush = QBrush(Qt::red);
greenBrush = QBrush(Qt::green);
grayBrush = QBrush(QColor(230,230,230));
//the whole thing is broken up into 100 chunks which are allocated as such:
//The entirety of the upper row is taken up by "BITS"
//The next row down skips two columns and then has 7 6 5 4 3 2 1 0
//The bottom right 64 entries are the grid
//The left most column has "BYTES" written vertically down it
//the next left most column has "0 1 2 3 4 5 6 7" written down along the grid
painter.setPen(QPen(QApplication::palette().color(QPalette::Text)));
QFont mainFont;
mainFont.setPixelSize(qMin(xSector, ySector) - 10);
painter.setFont(mainFont);
QFont smallFont;
smallFont.setPixelSize(qMin(xSector, ySector) - 15);
QFont boldFont;
boldFont.setPixelSize(qMin(xSector, ySector) - 10);
boldFont.setBold(true);
painter.drawText(QRect(viewport.left(), viewport.top(), xSpan, ySector), Qt::AlignCenter, tr("BITS"));
for (x = 0; x < 8; x++)
{
painter.drawText(QRect(viewport.left() + (x+2) * xSector, viewport.top() + ySector, xSector, ySector), Qt::AlignCenter, QString::number(7-x));
}
for (y = 0; y < 8; y++)
{
painter.drawText(QRect(viewport.left() + xSector, viewport.top() + ySector * (y + 2), xSector, ySector), Qt::AlignCenter, QString::number(y));
}
painter.drawText(viewport.left() + 10, viewport.top() + ySector * 4, "B");
painter.drawText(viewport.left() + 10, viewport.top() + ySector * 5, "Y");
painter.drawText(viewport.left() + 10, viewport.top() + ySector * 6, "T");
painter.drawText(viewport.left() + 10, viewport.top() + ySector * 7, "E");
painter.drawText(viewport.left() + 10, viewport.top() + ySector * 8, "S");
//now, color the bitfield by seeing if a given bit is freshly set/unset in the new data
//compared to the old. Bits that are not set in either are white, bits set in both are black
//bits that used to be set but now are unset are red, bits that used to be unset but now are set
//are green
painter.setPen(QPen(Qt::gray));
//painter.setFont(smallFont);
for (y = 0; y < 8; y++)
{
thisByte = data[y];
prevByte = refData[y];
for (x = 0; x < 8; x++)
{
thisBit = false;
prevBit = false;
if ((thisByte & (1 << (7-x))) == (1 << (7-x))) thisBit = true;
if ((prevByte & (1 << (7-x))) == (1 << (7-x))) prevBit = true;
if (thisBit)
{
if (prevBit)
{
painter.setBrush(blackBrush);
}
else
{
painter.setBrush(greenBrush);
}
}
else
{
if (prevBit)
{
painter.setBrush(redBrush);
}
else
{
if ((usedData[y] & (1 << (7-x))) == (1 << (7-x))) painter.setBrush(grayBrush);
else painter.setBrush(whiteBrush);
}
}
//painter.fillRect(viewport.left() + (x+2) * xSector, viewport.top() + (y+2) * ySector, xSector, ySector, redBrush);
painter.drawRect(viewport.left() + (x+2) * xSector, viewport.top() + (y+2) * ySector, xSector, ySector);
switch (textStates[x][y])
{
case GridTextState::NORMAL:
painter.setPen(QPen(Qt::gray));
painter.setFont(mainFont);
break;
case GridTextState::BOLD_BLUE:
painter.setPen(QPen(Qt::blue));
painter.setFont(boldFont);
break;
case GridTextState::INVERT:
painter.setFont(mainFont);
QColor brushColor = painter.brush().color();
painter.setPen(QColor(255-brushColor.red(), 255-brushColor.green(), 255-brushColor.blue()));
break;
}
painter.drawText(viewport.left() + (x+2) * xSector + (xSector / 8), viewport.top() + (y + 3) * ySector - (ySector / 3), QString::number(y * 8 + (7-x)));
painter.setPen(QPen(Qt::gray));
}
}
upperLeft.setX(viewport.left() + 2 * xSector);
upperLeft.setY(viewport.top() + 2 * ySector);
gridSize.setX(xSector);
gridSize.setY(ySector);
}
void CANDataGrid::saveImage(QString filename, int width, int height)
{
Q_UNUSED(width); //currently unused but I want to use them in the future
Q_UNUSED(height);
//can't quite do the below commented out stuff
//it works but doesn't scale the image into that pixmap. Need to
//figure out how to draw the size of the pixmap
/*
QSize pSize;
if (width == 0) pSize.setWidth(this->size().width());
else pSize.setWidth(width);
if (height == 0) pSize.setHeight(this->size().height());
else pSize.setHeight(height);
QPixmap pixmap(pSize);
*/
QPixmap pixmap(this->size());
this->render(&pixmap);
pixmap.save(filename); //QT will automatically pick the file format given the extension
}
void CANDataGrid::setReference(unsigned char *newRef, bool bUpdate = true)
{
memcpy(refData, newRef, 8);
if (bUpdate) this->update();
}
void CANDataGrid::updateData(unsigned char *newData, bool bUpdate = true)
{
memcpy(data, newData, 8); //on a 64 bit processor this is probably optimized to a single instruction
if (bUpdate) this->update();
}
void CANDataGrid::setUsed(unsigned char *newData, bool bUpdate = false)
{
memcpy(usedData, newData, 8);
if (bUpdate) this->update();
}