390 lines
11 KiB
C++
390 lines
11 KiB
C++
#include "dumpview.h"
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//! \todo Enable Scrollbars
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DumpView::DumpView(QWidget *parent)
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: QAbstractItemView(parent)
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{
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int w, h;
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// NOTE: Monospaced fonts only !!!!!!!!!!!
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setFont(QFont("Courier"));
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w = fontMetrics().width('X');
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h = fontMetrics().height();
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mLineHeight = h;
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mCharWidth = w;
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mSelectedRow = mSelectedCol = -1;
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// calculate width for offset column and the whitespace that follows it
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// 0010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
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mOffsetPaneTopRect = QRect(0, 0, w*4, h);
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mDumpPaneTopRect = QRect(mOffsetPaneTopRect.right()+w*3, 0,
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w*((8*3-1)+2+(8*3-1)), h);
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mAsciiPaneTopRect = QRect(mDumpPaneTopRect.right()+w*3, 0,
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w*(8+1+8), h);
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qDebug("DumpView::DumpView");
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}
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QModelIndex DumpView::indexAt(const QPoint &/*point*/) const
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{
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#if 0
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int x = point.x();
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int row, col;
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if (x > mAsciiPaneTopRect.left())
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{
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col = (x - mAsciiPaneTopRect.left()) / mCharWidth;
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if (col == 8) // don't select whitespace
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goto _exit;
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else if (col > 8) // adjust for whitespace
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col--;
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}
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else if (x > mDumpPaneTopRect.left())
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{
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col = (x - mDumpPaneTopRect.left()) / (mCharWidth*3);
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}
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row = point.y()/mLineHeight;
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if ((col < 16) && (row < ((data.size()+16)/16)))
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{
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selrow = row;
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selcol = col;
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}
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else
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goto _exit;
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// last row check col
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if ((row == (((data.size()+16)/16) - 1)) && (col >= (data.size() % 16)))
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goto _exit;
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qDebug("dumpview::selection(%d, %d)", selrow, selcol);
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offset = selrow * 16 + selcol;
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#if 0
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for(int i = 0; i < model()->rowCount(parent); i++)
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{
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QModelIndex index = model()->index(i, 0, parent);
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if (model()->hasChildren(index))
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indexAtOffset(offset, index); // Non Leaf
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else
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if (
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dump.append(model()->data(index, Qt::UserRole).toByteArray()); // Leaf
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// FIXME: Use RawValueRole instead of UserRole
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}
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#endif
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}
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_exit:
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// Clear existing selection
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selrow = -1;
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#endif
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return QModelIndex();
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}
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void DumpView::scrollTo(const QModelIndex &/*index*/, ScrollHint /*hint*/)
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{
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// FIXME: implement scrolling
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}
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QRect DumpView::visualRect(const QModelIndex &/*index*/) const
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{
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// FIXME: calculate actual rect
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return rect();
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}
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//protected:
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int DumpView::horizontalOffset() const
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{
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return horizontalScrollBar()->value();
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}
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bool DumpView::isIndexHidden(const QModelIndex &/*index*/) const
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{
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return false;
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}
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QModelIndex DumpView::moveCursor(CursorAction /*cursorAction*/,
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Qt::KeyboardModifiers /*modifiers*/)
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{
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// FIXME(MED): need to implement movement using cursor
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return currentIndex();
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}
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void DumpView::setSelection(const QRect &/*rect*/,
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QItemSelectionModel::SelectionFlags flags)
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{
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// FIXME(HI): calculate indexes using rect
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selectionModel()->select(QModelIndex(), flags);
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}
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int DumpView::verticalOffset() const
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{
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return verticalScrollBar()->value();
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}
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QRegion DumpView::visualRegionForSelection(
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const QItemSelection &/*selection*/) const
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{
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// FIXME(HI)
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return QRegion(rect());
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}
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//protected slots:
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void DumpView::dataChanged(const QModelIndex &/*topLeft*/,
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const QModelIndex &/*bottomRight*/)
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{
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// FIXME(HI)
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update();
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}
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void DumpView::selectionChanged(const QItemSelection &/*selected*/,
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const QItemSelection &/*deselected*/)
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{
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// FIXME(HI)
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update();
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}
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void DumpView::populateDump(QByteArray &dump, int &selOfs, int &selSize,
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QModelIndex parent)
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{
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// FIXME: Use new enum instead of Qt::UserRole
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//! \todo (low): generalize this for any model not just our pkt model
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Q_ASSERT(!parent.isValid());
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qDebug("!!!! %d $$$$", dump.size());
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for(int i = 0; i < model()->rowCount(parent); i++)
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{
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QModelIndex index = model()->index(i, 0, parent);
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Q_ASSERT(index.isValid());
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// Assumption: protocol data is in bytes (not bits)
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qDebug("%d: %d bytes", i, model()->data(index, Qt::UserRole).toByteArray().size());
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dump.append(model()->data(index, Qt::UserRole).toByteArray());
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}
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if (selectionModel()->selectedIndexes().size())
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{
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int j, bits;
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QModelIndex index;
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Q_ASSERT(selectionModel()->selectedIndexes().size() == 1);
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index = selectionModel()->selectedIndexes().at(0);
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if (index.parent().isValid())
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{
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// Field
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// SelOfs = SUM(protocol sizes before selected field's protocol) +
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// SUM(field sizes before selected field)
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selOfs = 0;
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j = index.parent().row() - 1;
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while (j >= 0)
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{
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selOfs += model()->data(index.parent().sibling(j,0),
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Qt::UserRole).toByteArray().size();
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j--;
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}
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bits = 0;
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j = index.row() - 1;
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while (j >= 0)
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{
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bits += model()->data(index.sibling(j,0), Qt::UserRole+1).
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toInt();
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j--;
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}
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selOfs += bits/8;
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selSize = model()->data(index, Qt::UserRole).toByteArray().size();
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}
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else
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{
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// Protocol
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selOfs = 0;
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j = index.row() - 1;
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while (j >= 0)
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{
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selOfs += model()->data(index.sibling(j,0), Qt::UserRole).
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toByteArray().size();
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j--;
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}
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selSize = model()->data(index, Qt::UserRole).toByteArray().size();
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}
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}
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}
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// TODO(LOW): rewrite this function - it's a mess!
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void DumpView::paintEvent(QPaintEvent* /*event*/)
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{
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QStylePainter painter(viewport());
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QRect offsetRect = mOffsetPaneTopRect;
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QRect dumpRect = mDumpPaneTopRect;
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QRect asciiRect = mAsciiPaneTopRect;
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QPalette pal = palette();
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static QByteArray data;
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//QByteArray ba;
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int selOfs = -1, selSize;
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int curSelOfs, curSelSize;
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qDebug("dumpview::paintEvent");
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// FIXME(LOW): unable to set the self widget's font in constructor
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painter.setFont(QFont("Courier"));
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// set a white background
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painter.fillRect(rect(), QBrush(QColor(Qt::white)));
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if (model())
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{
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data.clear();
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populateDump(data, selOfs, selSize);
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}
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// display the offset, dump and ascii panes 8 + 8 bytes on a line
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for (int i = 0; i < data.size(); i+=16)
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{
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QString dumpStr, asciiStr;
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//ba = data.mid(i, 16);
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// display offset
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painter.drawItemText(offsetRect, Qt::AlignLeft | Qt::AlignTop, pal,
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true, QString("%1").arg(i, 4, 16, QChar('0')), QPalette::WindowText);
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// construct the dumpStr and asciiStr
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for (int j = i; (j < (i+16)) && (j < data.size()); j++)
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{
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unsigned char c = data.at(j);
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// extra space after 8 bytes
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if (((j+8) % 16) == 0)
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{
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dumpStr.append(" ");
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asciiStr.append(" ");
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}
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dumpStr.append(QString("%1").arg((uint)c, 2, 16, QChar('0')).
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toUpper()).append(" ");
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if (isPrintable(c))
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asciiStr.append(QChar(c));
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else
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asciiStr.append(QChar('.'));
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}
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// display dump
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painter.drawItemText(dumpRect, Qt::AlignLeft | Qt::AlignTop, pal,
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true, dumpStr, QPalette::WindowText);
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// display ascii
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painter.drawItemText(asciiRect, Qt::AlignLeft | Qt::AlignTop, pal,
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true, asciiStr, QPalette::WindowText);
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// if no selection, skip selection painting
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if (selOfs < 0)
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goto _next;
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// Check overlap between current row and selection
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{
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QRect r1(i, 0, qMin(16, data.size()-i), 8);
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QRect s1(selOfs, 0, selSize, 8);
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if (r1.intersects(s1))
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{
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QRect t = r1.intersected(s1);
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curSelOfs = t.x();
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curSelSize = t.width();
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}
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else
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curSelSize = 0;
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}
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// overpaint selection on current row (if any)
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if (curSelSize > 0)
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{
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QRect r;
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QString selectedAsciiStr, selectedDumpStr;
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qDebug("dumpview::paintEvent - Highlighted (%d, %d)",
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curSelOfs, curSelSize);
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// construct the dumpStr and asciiStr
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for (int k = curSelOfs; (k < (curSelOfs + curSelSize)); k++)
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{
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unsigned char c = data.at(k);
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// extra space after 8 bytes
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if (((k+8) % 16) == 0)
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{
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// Avoid adding space at the start for fields starting
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// at second column 8 byte boundary
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if (k!=curSelOfs)
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{
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selectedDumpStr.append(" ");
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selectedAsciiStr.append(" ");
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}
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}
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selectedDumpStr.append(QString("%1").arg((uint)c, 2, 16,
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QChar('0')).toUpper()).append(" ");
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if (isPrintable(c))
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selectedAsciiStr.append(QChar(c));
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else
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selectedAsciiStr.append(QChar('.'));
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}
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// display dump
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r = dumpRect;
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if ((curSelOfs - i) < 8)
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r.translate(mCharWidth*(curSelOfs-i)*3, 0);
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else
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r.translate(mCharWidth*((curSelOfs-i)*3+1), 0);
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// adjust width taking care of selection stretching between
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// the two 8byte columns
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if (( (curSelOfs-i) < 8 ) && ( (curSelOfs-i+curSelSize) > 8 ))
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r.setWidth((curSelSize * 3 + 1) * mCharWidth);
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else
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r.setWidth((curSelSize * 3) * mCharWidth);
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painter.fillRect(r, pal.highlight());
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painter.drawItemText(r, Qt::AlignLeft | Qt::AlignTop, pal,
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true, selectedDumpStr, QPalette::HighlightedText);
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// display ascii
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r = asciiRect;
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if ((curSelOfs - i) < 8)
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r.translate(mCharWidth*(curSelOfs-i)*1, 0);
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else
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r.translate(mCharWidth*((curSelOfs-i)*1+1), 0);
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// adjust width taking care of selection stretching between
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// the two 8byte columns
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if (( (curSelOfs-i) < 8 ) && ( (curSelOfs-i+curSelSize) > 8 ))
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r.setWidth((curSelSize * 1 + 1) * mCharWidth);
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else
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r.setWidth((curSelSize * 1) * mCharWidth);
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painter.fillRect(r, pal.highlight());
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painter.drawItemText(r, Qt::AlignLeft | Qt::AlignTop, pal,
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true, selectedAsciiStr, QPalette::HighlightedText);
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}
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_next:
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// move the rects down
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offsetRect.translate(0, mLineHeight);
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dumpRect.translate(0, mLineHeight);
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asciiRect.translate(0, mLineHeight);
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}
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}
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