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1 2 // DOMRect 3 (function (global) { 4 function number(v) { 5 return v === undefined ? 0 : Number(v); 6 } 7 8 function different(u, v) { 9 return u !== v && !(isNaN(u) && isNaN(v)); 10 } 11 12 function DOMRect(xArg, yArg, wArg, hArg) { 13 var x, y, width, height, left, right, top, bottom; 14 15 x = number(xArg); 16 y = number(yArg); 17 width = number(wArg); 18 height = number(hArg); 19 20 Object.defineProperties(this, { 21 x: { 22 get: function () { return x; }, 23 set: function (newX) { 24 if (different(x, newX)) { 25 x = newX; 26 left = right = undefined; 27 } 28 }, 29 enumerable: true 30 }, 31 y: { 32 get: function () { return y; }, 33 set: function (newY) { 34 if (different(y, newY)) { 35 y = newY; 36 top = bottom = undefined; 37 } 38 }, 39 enumerable: true 40 }, 41 width: { 42 get: function () { return width; }, 43 set: function (newWidth) { 44 if (different(width, newWidth)) { 45 width = newWidth; 46 left = right = undefined; 47 } 48 }, 49 enumerable: true 50 }, 51 height: { 52 get: function () { return height; }, 53 set: function (newHeight) { 54 if (different(height, newHeight)) { 55 height = newHeight; 56 top = bottom = undefined; 57 } 58 }, 59 enumerable: true 60 }, 61 left: { 62 get: function () { 63 if (left === undefined) { 64 left = x + Math.min(0, width); 65 } 66 return left; 67 }, 68 enumerable: true 69 }, 70 right: { 71 get: function () { 72 if (right === undefined) { 73 right = x + Math.max(0, width); 74 } 75 return right; 76 }, 77 enumerable: true 78 }, 79 top: { 80 get: function () { 81 if (top === undefined) { 82 top = y + Math.min(0, height); 83 } 84 return top; 85 }, 86 enumerable: true 87 }, 88 bottom: { 89 get: function () { 90 if (bottom === undefined) { 91 bottom = y + Math.max(0, height); 92 } 93 return bottom; 94 }, 95 enumerable: true 96 } 97 }); 98 } 99 100 global.DOMRect = DOMRect; 101 }(self));
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Generated: Fri Dec 13 01:00:02 2024 | Cross-referenced by PHPXref 0.7.1 |