mouse usage example program

examples/mouse.js

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+// This HiggsJS example program demonstrates how to use the mouse functions.
+
+var draw = require('lib/draw');
+
+var window = draw.Window(50, 50, 500, 500, "mouse example");
+
+// Two global variables for storing the xy coordinates
+var drawX;
+var drawY;
+
+window.onClick(function(canvas, mouseX, mouseY)
+{
+    // Put all mouse click logic here.
+    print("click: " + mouseX + " : " + mouseY);
+});
+
+// Update new mouse coordinates when moved
+window.onMouseMove(function(canvas, mouseX, mouseY)
+{
+    // Put all mouse movement logic here.
+    drawX = mouseX;
+    drawY = mouseY        
+});
+
+window.onRender(function(canvas)
+{        
+    canvas.clear("#FFFFFF");
+
+    // Black dot at current mouse cordinates.
+    canvas.setColor("#000000");
+    canvas.fillCircle(drawX, drawY, 5);
+
+    // Intersecting lines aligned with mouse pointer.    
+    canvas.drawLine(0, drawY, 500, drawY);
+    canvas.drawLine(drawX, 0, drawX, 500);
+
+    // Print mouse coordinates to canvas.
+    canvas.setFont("courier", 16);
+    canvas.drawText(drawX - 150, drawY, " X: " + drawX);
+    canvas.drawText(drawX + 50, drawY, " Y: " + drawY);
+});
+
+window.show();