void View::Rotate (Graphic* g, Event& e) {
Coord l, b, r, t;
float cx, cy;
damage->Incur(g);
g->GetBox(l, b, r, t);
g->GetCenter(cx, cy);
RotatingRect rr(output, canvas, l, b, r, t, round(cx), round(cy), e.x,e.y);
Track(e, rr);
g->Rotate(rr.CurrentAngle(), cx, cy);
g->Touch();
damage->Incur(g);
Update();
}
void ViewerGraphic::Update () {
GraphicComp* parent = (GraphicComp*) _view->GetGraphicComp()->GetParent();
if (parent != nil) {
FullGraphic gs;
totalGSGraphic(parent->GetGraphic(), gs);
if (Different(this, &gs)) {
Damage* damage = _view->GetViewer()->GetDamage();
damage->Incur(this);
*(Graphic*)this = *(Graphic*)(&gs);
damage->Incur(this);
}
}
}
void View::Scale (Graphic* g, Event& e) {
Coord l, b, r, t;
float cx, cy, scale;
damage->Incur(g);
g->GetBox(l, b, r, t);
g->GetCenter(cx, cy);
ScalingRect sr(output, canvas, l, b, r, t, round(cx), round(cy));
Track(e, sr);
scale = sr.CurrentScaling();
g->Scale(scale, scale, cx, cy);
g->Touch();
damage->Incur(g);
Update();
}
void View::Move (Graphic* g, Event& e) {
Coord l, b, r, t, newl, newb;
float dx, dy, mag = GetMagnification();
damage->Incur(g);
g->GetBox(l, b, r, t);
SlidingRect sr(output, canvas, l, b, r, t, e.x, e.y);
Track(e, sr);
sr.GetCurrent(newl, newb, r, t);
dx = (newl - l) / mag; // get distance moved, corrected to reflect
dy = (newb - b) / mag; // current magnification
g->Translate(dx, dy);
g->Touch(); // so that new position will be written out
damage->Incur(g);
Update();
}