add backspace/delete support at hexview.cpp

[pheasant/hexedit.git] / src / control / standard / hexview.cpp

diff --git a/src/control/standard/hexview.cpp b/src/control/standard/hexview.cpp
index 712cb52..52692ba 100644 (file)
--- a/src/control/standard/hexview.cpp
+++ b/src/control/standard/hexview.cpp
@@ -197,6 +197,11 @@ void HexView::drawView(DrawMode mode, int line_start, int end)
        update(0, y_top, draw_width, draw_height);
 }
 
+inline void HexView::drawViewAfter(quint64 pos)
+{
+       drawView(DRAW_AFTER, pos / HexConfig::Num - cursor_-> Top);
+}
+
 inline void HexView::isSelected(bool &selected, quint64 &sel_begin, quint64 &sel_end, quint64 top, int count_draw_line, uint size)
 {
        if (!cursor_->hasSelection()) {
@@ -559,14 +564,34 @@ void HexView::keyPressEvent(QKeyEvent *ev)
                cursor_->moveRelativePosition(16 * 15, keepAnchor, true);
                break;
        case Qt::Key_Backspace:
-               qDebug("key backspace");
+               if (cursor_->hasSelection()) {
+                       const quint64 pos = qMin(cursor_->Position, cursor_->PositionAnchor);
+                       const quint64 len = qMax(cursor_->Position, cursor_->PositionAnchor) - pos;
+                       removeData(pos, len);
+                       cursor_->moveRelativePosition(0, false, false);
+                       cursor_->HighNibble = true;
+               } else if (0 < cursor_->Position) {
+                       removeData(cursor_->Position - 1, 1);
+                       cursor_->moveRelativePosition(-1, false, false);
+                       cursor_->HighNibble = true;
+               }
                break;
        case Qt::Key_Insert:
                qDebug("key insert");
                cursor_->reverseInsert();
                break;
        case Qt::Key_Delete:
-               qDebug("key delete");
+               if (cursor_->hasSelection()) {
+                       const quint64 pos = qMin(cursor_->Position, cursor_->PositionAnchor);
+                       const quint64 len = qMax(cursor_->Position, cursor_->PositionAnchor) - pos;
+                       removeData(pos, len);
+                       cursor_->moveRelativePosition(0, false, false);
+                       cursor_->HighNibble = true;
+               } else if (cursor_->Position < document_->length()) {
+                       removeData(cursor_->Position, 1);
+                       cursor_->moveRelativePosition(0, false, false);
+                       cursor_->HighNibble = true;
+               }
                break;
        default:
                {
@@ -595,10 +620,10 @@ void HexView::keyPressEvent(QKeyEvent *ev)
                                                document_->remove(pos, qMax(cursor_->Position, cursor_->PositionAnchor) - pos);
                                                cursor_->Position = pos;
                                                cursor_->resetAnchor();
+                                               // TODO: remove and refresh collectly
+                                               cursor_->moveRelativePosition(0, false, false);
                                        }
 
-                                       cursor_->HighNibble = true;
-                                       cursor_->moveRelativePosition(0, false, false);
                                        insertData(pos, nibble << 4);
                                        cursor_->HighNibble = false;
                                } else if (cursor_->Position < document_->length()) {
@@ -636,9 +661,18 @@ void HexView::insertData(quint64 pos, uchar character)
 {
        document_->insert(pos, &character, 1);
        // TODO: implement Redraw Event
-       drawView(DRAW_AFTER, pos / HexConfig::Num - cursor_-> Top);
+       drawViewAfter(pos);
        drawCaret();
 }
 
+void HexView::removeData(quint64 pos, quint64 len)
+{
+       document_->remove(pos, len);
+       // TODO: implement Redraw Event
+       drawViewAfter(pos);
+}
+
+
+
 
 }      // namespace