TraceView: Prevent decode traces from changing order

[pulseview.git] / pv / views / decoder_output / QHexView.cpp

diff --git a/pv/views/decoder_output/QHexView.cpp b/pv/views/decoder_output/QHexView.cpp
index 951c818a5f7e26ec062b716387c821264385869d..ccd50f87bccc1291195d2b515a4ee70418e422f0 100644 (file)
--- a/pv/views/decoder_output/QHexView.cpp
+++ b/pv/views/decoder_output/QHexView.cpp
@@ -92,9 +92,11 @@ void QHexView::set_data(const DecodeBinaryClass* data)
        data_ = data;
 
        size_t size = 0;
-       size_t chunks = data_->chunks.size();
-       for (size_t i = 0; i < chunks; i++)
-               size += data_->chunks[i].data.size();
+       if (data) {
+               size_t chunks = data_->chunks.size();
+               for (size_t i = 0; i < chunks; i++)
+                       size += data_->chunks[i].data.size();
+       }
        data_size_ = size;
 
        viewport()->update();
@@ -140,7 +142,7 @@ pair<size_t, size_t> QHexView::get_selection() const
                // Nothing is currently selected
                start = 0;
                end = data_size_;
-       } else
+       } if (end < data_size_)
                end++;
 
        return std::make_pair(start, end);
@@ -268,7 +270,7 @@ void QHexView::paintEvent(QPaintEvent *event)
        QSize widgetSize = getFullSize();
        setMinimumWidth(widgetSize.width());
        setMaximumWidth(widgetSize.width());
-       QSize areaSize = viewport()->size();
+       QSize areaSize = viewport()->size() - QSize(0, charHeight_);
 
        // Only show scrollbar if the content goes beyond the visible area
        if (widgetSize.height() > areaSize.height()) {
@@ -293,26 +295,28 @@ void QHexView::paintEvent(QPaintEvent *event)
        // Determine first/last line indices
        size_t firstLineIdx = verticalScrollBar()->value();
 
-       size_t lastLineIdx = firstLineIdx + areaSize.height() / charHeight_;
+       size_t lastLineIdx = firstLineIdx + (areaSize.height() / charHeight_);
        if (lastLineIdx > (data_size_ / BYTES_PER_LINE)) {
                lastLineIdx = data_size_ / BYTES_PER_LINE;
                if (data_size_ % BYTES_PER_LINE)
                        lastLineIdx++;
        }
 
-       // Fill address area background
-       painter.fillRect(QRect(posAddr_, event->rect().top(),
-               posHex_ - (GAP_ADR_HEX / 2), height()), palette().color(QPalette::Window));
-
        // Paint divider line between hex and ASCII areas
        int line_x = posAscii_ - (GAP_HEX_ASCII / 2);
        painter.setPen(palette().color(QPalette::Midlight));
        painter.drawLine(line_x, event->rect().top(), line_x, height());
 
+       // Fill address area background
+       painter.fillRect(QRect(posAddr_, event->rect().top(),
+               posHex_ - (GAP_ADR_HEX / 2), height()), palette().color(QPalette::Window));
+       painter.fillRect(QRect(posAddr_, event->rect().top(),
+               posAscii_ - (GAP_HEX_ASCII / 2), charHeight_ + 2), palette().color(QPalette::Window));
+
        // Paint address area
        painter.setPen(palette().color(QPalette::ButtonText));
 
-       int yStart = charHeight_;
+       int yStart = 2 * charHeight_;
        for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
 
                QString address = QString("%1").arg(lineIdx * 16, 10, 16, QChar('0')).toUpper();
@@ -320,6 +324,12 @@ void QHexView::paintEvent(QPaintEvent *event)
                y += charHeight_;
        }
 
+       // Paint top row with hex offsets
+       painter.setPen(palette().color(QPalette::ButtonText));
+       for (int offset = 0; offset <= 0xF; offset++)
+               painter.drawText(posHex_ + (1 + offset * 3) * charWidth_,
+                       charHeight_ - 3, QString::number(offset, 16).toUpper());
+
        // Paint hex values
        QBrush regular = palette().buttonText();
        QBrush selected = palette().highlight();
@@ -328,7 +338,7 @@ void QHexView::paintEvent(QPaintEvent *event)
        unsigned int chunk_color = 0;
 
        initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
-       yStart = charHeight_;
+       yStart = 2 * charHeight_;
        for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
 
                int x = posHex_;
@@ -377,7 +387,7 @@ void QHexView::paintEvent(QPaintEvent *event)
 
        // Paint ASCII characters
        initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
-       yStart = charHeight_;
+       yStart = 2 * charHeight_;
        for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
 
                int x = posAscii_;
@@ -412,7 +422,7 @@ void QHexView::paintEvent(QPaintEvent *event)
                int y = cursorPos_ / (2 * BYTES_PER_LINE);
                y -= firstLineIdx;
                int cursorX = (((x / 2) * 3) + (x % 2)) * charWidth_ + posHex_;
-               int cursorY = y * charHeight_ + 4;
+               int cursorY = charHeight_ + y * charHeight_ + 4;
                painter.fillRect(cursorX, cursorY, 2, charHeight_, palette().color(QPalette::WindowText));
        }
 }
@@ -610,7 +620,7 @@ size_t QHexView::cursorPosFromMousePos(const QPoint &position)
                x = (2 * x + 1) / 3;
 
                size_t firstLineIdx = verticalScrollBar()->value();
-               size_t y = (position.y() / charHeight_) * 2 * BYTES_PER_LINE;
+               size_t y = ((position.y() / charHeight_) - 1) * 2 * BYTES_PER_LINE;
                pos = x + y + firstLineIdx * BYTES_PER_LINE * 2;
        }