void GlyphViewer::grab_scroll () {
Window* w = canvas()->window();
WidgetKit* kit = WidgetKit::instance();
Coord dx = _lx - _x;
Coord dy = _ly - _y;
if (dx != 0.0 || dy != 0.0) {
Coord l, b, r, t;
w->cursor(kit->hand_cursor());
_root->getbounds(l, b, r, t);
canvas()->damage(l, b, r, t);
_root->translate(dx, dy);
_root->getbounds(l, b, r, t);
canvas()->damage(l, b, r, t);
_x += dx;
_y += dy;
}
}
void FieldStringEditor::do_grab_scroll(Event& e) {
Window* w = canvas->window();
Cursor* c = w->cursor();
w->cursor(kit_->hand_cursor());
int origin = display->Left(0, 0);
int width = display->Width();
Poll(e);
int x = e.x;
do {
origin += e.x - x;
origin = Math::min(
0, Math::max(Math::min(0, xmax - width), origin)
);
display->Scroll(0, origin, ymax);
x = e.x;
Poll(e);
} while (e.middlemouse);
w->cursor(c);
}
