_scale(1e-6),
_offset(0),
_v_offset(0),
+ _updating_scroll(false),
_show_cursors(false),
_cursors(pair<Cursor, Cursor>(Cursor(*this, 0.0),
Cursor(*this, 1.0))),
_hover_point(-1, -1)
{
- connect(horizontalScrollBar(), SIGNAL(sliderMoved(int)),
- this, SLOT(h_scroll_moved(int)));
+ connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
+ this, SLOT(h_scroll_value_changed(int)));
connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
this, SLOT(v_scroll_value_changed(int)));
get_scroll_layout(length, offset);
length = max(length - areaSize.width(), 0.0);
- horizontalScrollBar()->setPageStep(areaSize.width());
+ horizontalScrollBar()->setPageStep(areaSize.width() / 2);
+
+ _updating_scroll = true;
if (length < MaxScrollValue) {
horizontalScrollBar()->setRange(0, length);
_offset * MaxScrollValue / (_scale * length));
}
+ _updating_scroll = false;
+
// Set the vertical scrollbar
verticalScrollBar()->setPageStep(areaSize.height());
verticalScrollBar()->setRange(0,
update_scroll();
}
-void View::h_scroll_moved(int value)
+void View::h_scroll_value_changed(int value)
{
+ if (_updating_scroll)
+ return;
+
const int range = horizontalScrollBar()->maximum();
if (range < MaxScrollValue)
_offset = _scale * value;