QSize FastoHexEdit::fullSize() const {
const int charW = charWidth();
const int charH = charHeight();
const QRect rect = stableRect(viewport()->rect());
const int yPosStart = rect.top();
const int xPosStart = rect.left();
const int yPosEnd = rect.bottom();
const int xPosEnd = rect.right();
const int wid = xPosEnd - xPosStart;
const int widchars = wid - TextMarginXY * 2;
const int xPosAscii = widchars/4 * 3; // line pos
int acharInLine = asciiCharInLine(widchars);
int width = xPosAscii + (acharInLine * charW);
int height = data_.size() / acharInLine;
if (data_.size() % acharInLine) {
height++;
}
height *= charH;
return QSize(width, height);
}
int FastoHexEdit::positionAtPoint(const QPoint &point) const
{
const int px = point.x();
const int py = point.y();
const int charW = charWidth();
const int charH = charHeight();
const QRect rect = stableRect(viewport()->rect());
const int yPosStart = rect.top();
const int xPosStart = rect.left();
const int yPosEnd = rect.bottom();
const int xPosEnd = rect.right();
const int wid = xPosEnd - xPosStart;
const int widchars = wid - TextMarginXY * 2;
const int xPosAscii = widchars/4 * 3; //line pos
int acharInLine = asciiCharInLine(widchars);
if(acharInLine < 0){
acharInLine = 0;
}
if ((px >= xPosStart && px < xPosAscii) && (py >= yPosStart && py < yPosEnd)){
int posx = (xPosStart + px) / charW;
int div = posx / 3;
int mod = posx % 3;
int pos = 0; //symbol pos in data;
if(mod == 0){
pos = div * 2;
}
else{
pos = (div * 2) + 1;
}
int firstLineIdx = verticalScrollBar()->value();
int posy = (py - yPosStart) / charH;
pos = pos + (firstLineIdx + posy) * acharInLine * 2;
return pos;
}
return -1;
}
void FastoHexEdit::paintEvent(QPaintEvent *event) {
if (mode_ == HEX_MODE) {
QPainter painter(viewport());
QSize areaSize = viewport()->size();
QSize widgetSize = fullSize();
const int charW = charWidth();
const int charH = charHeight();
int firstLineIdx = verticalScrollBar()->value();
int lastLineIdx = firstLineIdx + areaSize.height() / charH;
const QRect rect = stableRect(event->rect());
const int yPosStart = rect.top();
const int xPosStart = rect.left();
const int yPosEnd = rect.bottom();
const int xPosEnd = rect.right();
const int wid = xPosEnd - xPosStart;
const int height = yPosEnd - yPosStart;
const int widchars = wid - TextMarginXY * 2;
const int acharInLine = asciiCharInLine(widchars);
if (acharInLine <= 0) {
return;
}
const int xPosAscii = widchars/4 * 3; // line pos
const int xPosAsciiStart = xPosAscii + TextMarginXY;
int indexCount = data_.size() / acharInLine;
if (lastLineIdx > indexCount) {
lastLineIdx = indexCount;
if (data_.size() % acharInLine) {
lastLineIdx++;
}
}
verticalScrollBar()->setPageStep(areaSize.height() / charH);
verticalScrollBar()->setRange(0, (widgetSize.height() - areaSize.height()) / charH + 1);
painter.setPen(Qt::gray);
painter.drawLine(xPosAscii, yPosStart, xPosAscii, yPosEnd);
painter.setPen(Qt::black);
int size = data_.size();
for (int lineIdx = firstLineIdx, yPos = yPosStart;
lineIdx < lastLineIdx; lineIdx += 1, yPos += charH) {
QByteArray part = data_.begin() + (lineIdx * acharInLine);
int part_size = size / acharInLine ? acharInLine : size % acharInLine;
part.resize(part_size);
size -= part_size;
QByteArray hex = part.toHex();
painter.setBackgroundMode(Qt::OpaqueMode);
for (int xPos = xPosStart, i = 0; i < hex.size(); i++, xPos += 3 * charW) {
QString val = hex.mid(i * 2, 2);
QRect hexrect(xPos, yPos, 3 * charW, charH);
painter.drawText(hexrect, Qt::AlignLeft, val);
char ch = part[i];
if ((ch < 0x20) || (ch > 0x7e)) {
part[i] = '.';
}
}
painter.setBackgroundMode(Qt::TransparentMode);
QRect asciirect(xPosAsciiStart, yPos, acharInLine * charW, charH);
painter.drawText(asciirect, Qt::AlignLeft, part);
}
} else {
base_class::paintEvent(event);
}
}
