void Viewer::Align (GraphicComp* comp, Alignment a) {
Graphic* g = comp->GetGraphic();
float cl, cb, cr, ct;
g->GetBounds(cl, cb, cr, ct);
Perspective* p = GetPerspective();
float mag = GetMagnification();
float vl = float(p->curx - p->x0) / mag;
float vb = float(p->cury - p->y0) / mag;
float vr = float(p->curx - p->x0 + p->curwidth - 1) / mag;
float vt = float(p->cury - p->y0 + p->curheight - 1) / mag;
float dx, dy;
switch (a) {
case TopLeft:
case CenterLeft:
case BottomLeft:
case Left:
dx = vl - cl;
break;
case TopCenter:
case Center:
case BottomCenter:
dx = (vr + vl - cr - cl) / 2;
break;
case TopRight:
case CenterRight:
case BottomRight:
case Right:
dx = vr - cr;
break;
}
switch (a) {
case TopLeft:
case TopCenter:
case TopRight:
case Top:
dy = vt - ct;
break;
case CenterLeft:
case Center:
case CenterRight:
dy = (vt + vb - ct - cb) / 2;
break;
case BottomLeft:
case BottomCenter:
case BottomRight:
case Bottom:
dy = vb - cb;
break;
}
MoveCmd mvcmd(GetEditor(), dx, dy);
comp->Interpret(&mvcmd);
}
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();
}
void Viewer::UpdateMagnifVar () {
MagnifVar* magnifVar = (MagnifVar*) _editor->GetState("MagnifVar");
if (magnifVar != nil) magnifVar->SetMagnif(GetMagnification());
}
