fisheye_lib.lzx

<!---
      @topic Incubator
      @subtopic Components
  -->
<library>
    <include href="utils/layouts/simpleboundslayout.lzx"/>
    <include href="incubator/tooltipmanager.lzx"/>
    
    <class name="fisheye" defaultplacement="center">
        <attribute name="start_size" value="24"/>
        <attribute name="expanded_size" value="100"/>
        <attribute name="halo_size" value="20"/>
        
        
        <tooltipManager name="tooltipmanager" delay="300"/>


        <view name="center" x="${parent.width/2 - this.width/2}" y="${parent.height/2 - this.height/2}">
            
            <simpleboundslayout axis="x" spacing="10"/> 
        </view>
    </class>
    
    <class name="fisheye_item" valign="middle">
        <attribute name="icon" type="string"/>
        <attribute name="text" type="text"/>
        
        <attribute name="start_size" value="${parent.start_size}"/>
        <attribute name="expanded_size" value="${parent.expanded_size}"/>
        <attribute name="halo_size" value="${parent.halo_size}"/>
        
        <attribute name="myTooltipManager" value="$once{parent.tooltipmanager}"/>
        <attribute name="tooltip" value="${this.text}"/>
        
        
        <handler name="oninit">
            myTooltipManager.register(this);
        </handler>

        <view resource="$once{parent.icon}" width="$once{parent.start_size}" height="$once{parent.start_size}" valign="middle" align="center" stretches="both">
                <attribute name="old_x" value="$once{canvas.getMouse('x')}"/>
                <attribute name="old_y" value="$once{canvas.getMouse('y')}"/>
                

                <handler name="onmousemove" reference="canvas">
                    var global_x = canvas.getMouse("x");
                    var global_y = canvas.getMouse("y");
                    
                    if(old_x == global_x && old_y == global_y) return;
                    this.old_x = global_x;
                    this.old_y = global_y;
                
                    var my_x = this.getAttributeRelative( "x", canvas );
                    var my_y = this.getAttributeRelative( "y", canvas );
                
                    var center_x = my_x + this.width/2;
                    var center_y = my_y + this.height/2;
                
                    var dist_from_center = 
                        (global_x-center_x)*(global_x-center_x) +
                        (global_y-center_y)*(global_y-center_y)
                    ;
                    

                        
                    var halo = classroot.expanded_size/2 + parent.halo_size;
                    halo *= halo;
                    var percentIn = (halo - dist_from_center)/halo;

                    if ($debug) {
                        Debug.write("Percentage In = "+percentIn);
                    }

                    var diff = (classroot.expanded_size - classroot.start_size);
                    var amount = percentIn * diff;
                    
                
                    
                    if (this['lastamount'] == amount) return;
                    if(amount > 0) {
                        
                         this.setAttribute("width",parent.start_size+amount);
                         this.setAttribute("height",parent.start_size+amount);
                         
                    } else {
                       
                        this.setAttribute("width",parent.start_size);
                        this.setAttribute("height",parent.start_size);
                    }
                    this.lastamount = amount;

                    
                </handler>
        </view>
    </class>

</library>
<!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
* Copyright 2007, 2008 Laszlo Systems, Inc.  All Rights Reserved.                   *
* Use is subject to license terms.                                            *
* X_LZ_COPYRIGHT_END ****************************************************** -->