SCUserView user-definable view


superclass: SCView


SCUserView is a user-definable View intended mainly for use with Pen and drawHooks.


See also: SCWindow, Pen, Color, and String


keyDownFunc_


Set the function which should be evaluated if the view is in focus and a key is pressed. This function will be passed four arguments: the View, the key pressed as a Char, modifier keys (shift, alt, etc.), and the unicode value. See SCView for more details.


(

// select the window, type something and watch the post window

w = SCWindow.new("select this window and type something");

c = SCUserView(w,w.view.bounds);

c.keyDownFunc = { arg view,char,modifiers,unicode;

[char, modifiers, unicode].postln;

c.drawFunc = {

char.asString.drawAtPoint(180@150, Font("Gadget", 70), Color.blue(0.3, 0.5))

};

w.refresh;

};

w.front; c.focus;

)


drawFunc_


Set the function which should be evaluated if the view is refreshed. This happens every time the whole window is refreshed (manually by calling SCWindow-refresh or e.g. by selecting the view or resizing the window).

(

var func;

func = {|me|

Pen.use{

// clipping into the boundingbox

Pen.moveTo((me.bounds.left)@(me.bounds.top));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@0));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@me.bounds.height));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (0@me.bounds.height));

Pen.lineTo((me.bounds.left)@(me.bounds.top));

Pen.clip;

// draw background

Color.gray(0.5).set;

Pen.moveTo((me.bounds.left)@(me.bounds.top));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@0));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@me.bounds.height));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (0@me.bounds.height));

Pen.lineTo((me.bounds.left)@(me.bounds.top));

Pen.fill;


Pen.translate(100, 100);

10.do{

Color.red(rrand(0.0, 1), rrand(0.0, 0.5)).set;

Pen.addArc((400.exprand(2))@(100.rand), rrand(10, 100), 2pi.rand, pi);

Pen.perform([\stroke, \fill].choose);

}

}

};


w = SCWindow.new("DrawFunc Examples").front;

w.view.background_(Color.white);

3.do{|i|

v = SCUserView(w, Rect(20+(i*120), 100, 100, 100));

v.drawFunc = func;

};

w.refresh;

)


mouseBeginTrackFunc_


Set the function which should be evaluated if the mouse is at the beginning of tracking (mouse-down). This function will be passed four arguments: theView, x coordinate, y coordinate, and keyboard modifiers.


mouseTrackFunc_


Set the function which should be evaluated if the mouse is tracked. This function will be passed four arguments: theView, x coordinate, y coordinate, and keyboard modifiers.


mouseEndTrackFunc_


Set the function which should be evaluated if the mouse is at the end of tracking (mouse-up). This function will be passed four arguments: theView, x coordinate, y coordinate, and keyboard modifiers.

(

var drawFunc, beginTrackFunc, endTrackFunc, trackFunc, sat = 0, absX;

drawFunc = {|me|

Pen.use{

// clipping into the boundingbox

Pen.moveTo((me.bounds.left)@(me.bounds.top));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@0));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@me.bounds.height));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (0@me.bounds.height));

Pen.lineTo((me.bounds.left)@(me.bounds.top));

Pen.clip;

// draw background

Color.gray(sat).set;

Pen.moveTo((me.bounds.left)@(me.bounds.top));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@0));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (me.bounds.width@me.bounds.height));

Pen.lineTo(((me.bounds.left)@(me.bounds.top))

+ (0@me.bounds.height));

Pen.lineTo((me.bounds.left)@(me.bounds.top));

Pen.fill;


Pen.translate(100, 100);

10.do{

Color.red(rrand(0.0, 1), rrand(0.0, 0.5)).set;

Pen.addArc((400.exprand(2))@(100.rand), rrand(10, 100), 2pi.rand, pi);

Pen.perform([\stroke, \fill].choose);

}

}

};

beginTrackFunc = {|me, x, y, mod|

absX = x;

postf("begin path: x=%\n",absX);

};

endTrackFunc = {|me, x, y, mod|

postf("end path: (absX-x)=%\n", (absX-x))

};

trackFunc = {|me, x, y, mod|

sat = ((absX-x)/100);

me.refresh;

};


w = SCWindow.new.front;

w.view.background_(Color.white);

3.do{|i|

v = SCUserView(w, Rect(20+(i*120), 100, 100, 100));

//v.background_(Color.white); // not affecting anything...

v.drawFunc = drawFunc;

v.mouseBeginTrackFunc = beginTrackFunc;

v.mouseEndTrackFunc = endTrackFunc;

v.mouseTrackFunc = trackFunc;

};

w.refresh;

)

// draw on the view


(

var w, txt, tmppoints, all;

tmppoints = [];

w = SCWindow("draw on me", Rect(128, 64, 340, 360));

w.drawHook_{

Pen.use {

Pen.width = 1;

Pen.beginPath;

tmppoints.do{ |p, i|

if(i == 0){

Pen.moveTo(p);

}{

Pen.lineTo(p);

}

};

all.do{|points|

points.do{|p, i|

if(i == 0){

Pen.moveTo(p);

}{

Pen.lineTo(p);

}

};

};

Pen.stroke;

};

};

v = SCUserView(w,Rect(0, 0, 340, 360))

.mouseTrackFunc_({|v,x,y|

tmppoints = tmppoints.add(x@y);

w.refresh;

})

.mouseEndTrackFunc_({|v,x,y|

all = all.add(tmppoints.copy);

tmppoints = [];

w.refresh;

});

w.front;

)

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