SCCompositeView A view that contains other views
Inherits from: Object : SCView : SCContainerView
A container for grouping other views and widgets. SCCompositeView inherits all of its methods from SCContainerView.
See also: FlowView, FlowLayout
Some Important Issues Regarding SCCompositeView
SCCompositeView is used for grouping widgets in a window. While it accept key actions, it does not accept mouse clicks or drags.
Creation / Class Methods
*new (parent, bounds)
parent - The parent view.
bounds - An instance of Rect, or a Point indicating width@height.
(
w = Window.new;
c = CompositeView(w, Rect(0,0,300,300) );
a = Slider2D(c, Rect(10,10,100,100) );
b = Slider2D(c, Rect(110,110,100,100) );
w.front;
)
Coordinate System
by default, the relativeOrigin flag of containers is set to true, and views are placed relative to the upper left corner of the container.
(
w = Window.new;
c = CompositeView(w,Rect(50,0,300,300));
a = Slider2D(c,Rect(0,0,100,100)); // actually displays at (50, 0)
b = Slider2D(c,Rect(100,100,100,100));
c.background = Color.rand;
w.front;
)
c.bounds_(Rect(100,0,300,300)); // contents adust since coords are relative
c.resize_(6); // contents adust since coords are relative
You can also set relativeOrigin=false. Then coordinates are relative to (0, 0) in the window. See the discussion of the relativeOrigin flag, immediately following, if you want to position child views relative to the CompositeView's origin.
(
w = Window.new;
c = CompositeView(w,Rect(50,0,300,300)).relativeOrigin_(false);
a = Slider2D(c,Rect(50,0,100,100)); // you must specify the absolute coordinates here
b = Slider2D(c,Rect(150,100,100,100));
c.background = Color.rand;
w.front;
)
c.bounds_(Rect(100,0,300,300)); // contents will not adust since coords are absolute
c.resize_(6); // contents will not adust since coords are absolute
Note: if you place a CompositeView with absolute coordinates (relativeOrigin = false) inside another CompositeView using relative coordinates (relativeOrigin = true), the child CompositeView's absolute coordinates override the relative position indicated by the parent. This is easily handled if you're specifying the coordinates yourself, but if you're using a decorator (see below), the child will display in the wrong place. When using a decorator on a relative origin CompositeView, you should not place absolute origin CompositeViews inside it.
Keydown Bubbling
Key actions "bubble up" to the parent view if a view does not define one itself. In the following example, a and b do not have keyDown actions themselves, so the key event is passed to c, the parent, which defines the key down action. d's parent is the SCTopView, which has no key down action. See also SCView.
( //Click on the different views and hit keys on the keyboard.
w = Window.new;
c = CompositeView(w,Rect(0,0,200,200)).background_(Color.grey.alpha_(0.3));
a = Slider2D(c,Rect(0,0,100,100)).background_(Color.rand);
b = Slider2D(c,Rect(100,100,100,100)).background_(Color.rand);
w.front;
c.keyDownAction = {
"keydown bubbled up to c".postln;
};
//d is on window w, not on composite view c
d = Slider2D(w,Rect(200,200,100,100));
d.background = Color.black;
)
Decorators
A 'decorator' object can be set to handle layout management. All views added to the CompositeView will now be placed by the decorator. Currently the only one existing is FlowLayout. You can use the addFlowLayout method as a short cut to assigning FlowLayout to decorator.
(
a = Window.new;
b = CompositeView(a,Rect(0,0,500,500)).relativeOrigin_(false);
b.decorator = FlowLayout(b.bounds);
// b.addFlowLayout; // you can also write this for convenience
// adding views to b automatically use the decorator
// no need to use parent.decorator.place
c = Slider2D(b,Rect(0,0,100,100)); // size matters
d = Slider2D(b,Rect(0,0,100,100)); // origin doesn't
a.front;
)
If you set the CompositeView's relativeOrigin to true, the bounds that you give to the FlowLayout should originate at (0,0). In this case, be careful not to put absolute origin CompositeViews inside a relative origin CompositeView that has a decorator.
(
a = Window.new;
b = CompositeView(a,Rect(0,0,500,500)).relativeOrigin_(true);
b.addFlowLayout;
c = Slider2D(b,Rect(0,0,100,100)); // size matters
d = Slider2D(b,Rect(0,0,100,100)); // origin doesn't
a.front;
)
You can also use an empty composite view nicely as a spacer in VLayoutView, HLayoutView, or views that have a FlowLayout as their decorator.
(
a = Window.new;
b = CompositeView(a,Rect(0,0,500,500)).relativeOrigin_(true);
b.decorator = FlowLayout(Rect(0, 0, 500, 500));
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
CompositeView(b,Rect(0,0,70,100)); //just used for spacing
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
b.decorator.nextLine;
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
CompositeView(b,Rect(0,0,70,100)) ;//just used for spacing
Slider2D(b,Rect(0,0,100,100)).background_(Color.rand);
a.front;
)
Hiding / Swapping
You can stack CompositeViews on top of each other and use a button show only one of them
(
var colors = [Color.blue,Color.red, Color.green];
a = Window.new;
q = 3;
b = Button(a,Rect(0,0,160,20));
b.states = Array.fill(q,{ arg i;
[i.asString,Color.white,colors.wrapAt(i)]
});
b.action = { arg butt;
p.visible = false;
p = c.at(butt.value);
p.visible = true;
};
c = Array.fill(q,{ arg i;
b = CompositeView(a,Rect(0,25,300,300)).relativeOrigin_(true);
b.background=colors[i].alpha_(0.2);
b.visible=false;
b;
});
5.do{arg i;c[0].add(Slider(c[0],Rect(10,i*30+10,150,25)).value_(1.0.rand))};
5.do{arg i;c[1].add(Slider(c[1],Rect(i*30+10,10,25,150)).value_(1.0.rand))};
c[2].add(Slider2D(c[2],Rect(10,10,155,150)).x_(1.0.rand).y_(1.0.rand));
p = c.at(0); // previous
p.visible = true; // show first one
a.front;
)
Nested Example
In this example, the StaticText accepts mouse clicks, since container views can't:
(
w=Window.new.front;
v=CompositeView.new(w,w.view.bounds.insetBy(10)).background_(Color.rand);
v.decorator=FlowLayout(v.bounds);
l="SUPERCOLLIDER".scramble;
t=Array.fill(9,{arg i; var n,r,q;
n=CompositeView.new(v,Rect(20,20,121,121)).background_(Color.rand);
q=StaticText(n, n.bounds.moveTo(0,0).insetBy(25)).string_(l[i]).align_(\center);
q.enabled=true;
// q.font=Font("Geneva",10);
q.font=Font( "Geneva", 10 );
q.background_(Color.rand);
q.mouseDownAction={
n.background_(Color.rand);
q.font=q.font.size_(5+q.font.size+7%60)
};
});
)