Help/GUI/Cocoa-GUI/SCDragSink.html

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  39 <p class="p1"><span class="s1"><b>SCDragSink<span class="Apple-tab-span">       </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>a gui object for receiving drag and drop</b><span class="s1"><b><span class="Apple-tab-span">      </span><span class="Apple-tab-span">    </span></b></span></p>
  40 <p class="p2"><br></p>
  41 <p class="p3"><span class="s2"><b>Inherits from: </b><a href="../../Core/Object.html"><b>Object</b></a><b> : </b><a href="SCView.html"><b>SCView</b></a><b> : </b><a href="SCStaticTextBase.html"><b>SCStaticTextBase</b></a><b> : </b><a href="SCDragView.html"><b>SCDragView</b></a></span></p>
  42 <p class="p4"><br></p>
  43 <p class="p1">See <a href="SCDragView.html"><span class="s3">SCDragView</span></a> for description and examples, and <a href="SCView.html"><span class="s4">SCView</span></a> for a general description of the drag and drop mechanism.</p>
  44 <p class="p2"><br></p>
  45 <p class="p5"><b>Creation / Class Methods</b></p>
  46 <p class="p6"><br></p>
  47 <p class="p7"><b><span class="Apple-tab-span">  </span>*new (parent, bounds)</b></p>
  48 <p class="p8"><b><span class="Apple-tab-span">  </span></b></p>
  49 <p class="p9"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><b>parent </b>- the parent view.</p>
  50 <p class="p9"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><b>bounds </b>- an instance of <a href="../../Geometry/Rect.html"><span class="s5">Rect</span></a>, or a <a href="../../Geometry/Point.html"><span class="s5">Point</span></a> indicating width@height.</p>
  51 <p class="p2"><br></p>
  52 <p class="p10"><b>Subclassing and Internal Methods</b></p>
  53 <p class="p7"><span class="s6"><span class="Apple-tab-span">    </span></span>The following methods are usually not used directly or are called by a primitive. Programmers can still call or override these as needed.</p>
  54 <p class="p8"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></p>
  55 <p class="p7"><span class="Apple-tab-span">     </span><b>defaultCanReceiveDrag</b></p>
  56 <p class="p8"><b><span class="Apple-tab-span">  </span></b></p>
  57 <p class="p7"><b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span></b>The method called by default when attempting to drop a drag in this object. By default, SCDragSink will respond to any drag.</p>
  58 <p class="p8"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s7"><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span></span></p>
  59 <p class="p7"><span class="Apple-tab-span">     </span><b>defaultReceiveDrag</b></p>
  60 <p class="p8"><br></p>
  61 <p class="p7"><b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span></b>The default method called when a drag has been recieved.</p>
  62 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>By default, this sets the <b>object</b> to the <b>currentDrag</b> and performs the <b>action.</b></p>
  63 <p class="p8"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span></p>
  64 <p class="p10"><b>Examples</b></p>
  65 <p class="p11"><br></p>
  66 <p class="p12">(</p>
  67 <p class="p13"><span class="s2">s.waitForBoot({<span class="Apple-tab-span">    </span></span>//only needed if you are using sound</p>
  68 <p class="p12"><span class="Apple-tab-span">    </span>w=<span class="s8">Window</span>.new.front;</p>
  69 <p class="p4"><span class="Apple-tab-span">     </span></p>
  70 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// store various kinds of objects in the drag source</p>
  71 <p class="p4"><span class="Apple-tab-span">     </span></p>
  72 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// a string source</p>
  73 <p class="p12"><span class="Apple-tab-span">    </span>a=<span class="s8">DragSource</span>(w,<span class="s8">Rect</span>(10,10,150,20)).align_(<span class="s9">\center</span>);</p>
  74 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>a.object=</span>"I am a string source"<span class="s2">;</span></p>
  75 <p class="p4"><span class="Apple-tab-span">     </span></p>
  76 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// a Float source</p>
  77 <p class="p12"><span class="Apple-tab-span">    </span>b=<span class="s8">DragSource</span>(w,<span class="s8">Rect</span>(10,40,150,20)).align_(<span class="s9">\center</span>);</p>
  78 <p class="p12"><span class="Apple-tab-span">    </span>b.object=2.234;</p>
  79 <p class="p4"><span class="Apple-tab-span">     </span></p>
  80 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// a Point source</p>
  81 <p class="p12"><span class="Apple-tab-span">    </span>c=<span class="s8">DragSource</span>(w,<span class="s8">Rect</span>(10,70,150,20)).align_(<span class="s9">\center</span>);</p>
  82 <p class="p12"><span class="Apple-tab-span">    </span>c.object=<span class="s8">Point</span>(20,30);</p>
  83 <p class="p4"><span class="Apple-tab-span">     </span></p>
  84 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// A sound function source</p>
  85 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// dragLabel_() is used for the label while dragging</p>
  86 <p class="p12"><span class="Apple-tab-span">    </span>d=<span class="s8">DragSource</span>(w,<span class="s8">Rect</span>(10,100,150,20)).align_(<span class="s9">\center</span>);</p>
  87 <p class="p12"><span class="Apple-tab-span">    </span>d.object={<span class="s8">Synth</span>(<span class="s9">\default</span>)};</p>
  88 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>d.dragLabel=</span>" I am a sound function.\n My dragLabel_() is set \n to inform you about that "<span class="s2">;</span></p>
  89 <p class="p4"><span class="Apple-tab-span">     </span></p>
  90 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// A sound function source</p>
  91 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>//here the string label is independent of the content type (Function)</p>
  92 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// dragLabel_() is used for the label while dragging</p>
  93 <p class="p12"><span class="Apple-tab-span">    </span>f=<span class="s8">DragSource</span>(w,<span class="s8">Rect</span>(10,130,150,20)).align_(<span class="s9">\center</span>).setBoth_(<span class="s8">false</span>);</p>
  94 <p class="p12"><span class="Apple-tab-span">    </span>f.object={{<span class="s8">SinOsc</span>.ar(440,0,0.4)}.play};</p>
  95 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>f.string=</span>"My label is independent"<span class="s2">;</span></p>
  96 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>f.dragLabel=</span>" My dragLabel_() says \n I am dragging a sound function "<span class="s2">;</span></p>
  97 <p class="p4"><span class="Apple-tab-span">     </span></p>
  98 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// receive anthing</p>
  99 <p class="p12"><span class="Apple-tab-span">    </span>g=<span class="s8">DragSink</span>(w,<span class="s8">Rect</span>(170,10,200,20)).align_(<span class="s9">\center</span>);</p>
 100 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>g.string=</span>"recieve anything, do nothing"<span class="s2">;</span></p>
 101 <p class="p4"><span class="Apple-tab-span">     </span></p>
 102 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// receive only floats</p>
 103 <p class="p12"><span class="Apple-tab-span">    </span>g=<span class="s8">DragSink</span>(w,<span class="s8">Rect</span>(170,40,200,20)).align_(<span class="s9">\center</span>);</p>
 104 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>g.string=</span>"I only like floats"<span class="s2">;</span></p>
 105 <p class="p12"><span class="Apple-tab-span">    </span>g<span class="s10">.</span>canReceiveDragHandler = { <span class="s8">View</span>.currentDrag.isFloat };</p>
 106 <p class="p4"><span class="Apple-tab-span">     </span></p>
 107 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// receive only numbers and points, and convert them to rects</p>
 108 <p class="p12"><span class="Apple-tab-span">    </span>h=<span class="s8">DragSink</span>(w,<span class="s8">Rect</span>(170,70,200,20)).align_(<span class="s9">\center</span>);</p>
 109 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>h.string=</span>"I convert to Rect"<span class="s2">;</span></p>
 110 <p class="p12"><span class="Apple-tab-span">    </span><span class="s10">h.</span>canReceiveDragHandler = {<span class="s8">View</span>.currentDrag.isKindOf(<span class="s8">Number</span>)||<span class="s8">View</span>.currentDrag.isKindOf(<span class="s8">Point</span>)};</p>
 111 <p class="p12"><span class="Apple-tab-span">    </span>h.receiveDragHandler={<span class="s8">arg</span> v; h.object=<span class="s8">View</span>.currentDrag.asRect};</p>
 112 <p class="p4"><span class="Apple-tab-span">     </span></p>
 113 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// receive only functions, and try to play them</p>
 114 <p class="p12"><span class="Apple-tab-span">    </span>i=<span class="s8">DragSink</span>(w,<span class="s8">Rect</span>(170,100,200,20)).align_(<span class="s9">\center</span>);</p>
 115 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span>i.string=</span>"I evaluate a (sound) function"<span class="s2">;</span></p>
 116 <p class="p12"><span class="Apple-tab-span">    </span><span class="s10">i.</span>canReceiveDragHandler = {<span class="s8">View</span>.currentDrag.isKindOf(<span class="s8">Function</span>)};</p>
 117 <p class="p12"><span class="Apple-tab-span">    </span>i.receiveDragHandler={<span class="s8">arg</span> v;</p>
 118 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>i.object=<span class="s8">View</span>.currentDrag.value;</p>
 119 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span>i.string=</span>"click here for silence"<span class="s2">;</span></p>
 120 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>i.background_(<span class="s8">Color</span>.red)};</p>
 121 <p class="p12"><span class="Apple-tab-span">    </span>i.mouseDownAction_({i.object.free;i.string=<span class="s11">"I evaluate a (sound) function"</span>;i.background_(<span class="s8">Color</span>.clear)});</p>
 122 <p class="p4"><span class="Apple-tab-span">     </span></p>
 123 <p class="p12"><span class="Apple-tab-span">    </span><span class="s8">StaticText</span>(w,<span class="s8">Rect</span>(10,200,380,50))</p>
 124 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>.stringColor_(<span class="s8">Color</span>.white)</p>
 125 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span>.string_(</span>"Try dragging any item on the left -----&gt; to any item on the right"<span class="s2">);</span></p>
 126 <p class="p4"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span></p>
 127 <p class="p12">});</p>
 128 <p class="p12">)</p>
 129 <p class="p4"><br></p>
 130 <p class="p4"><br></p>
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