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[Code Style] Use prototypes in Layout bundle

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WTD-1482
This commit is contained in:
Victor Woeltjen
2015-08-12 13:45:48 -07:00
parent a9e2d48036
commit ed53808556
15 changed files with 615 additions and 596 deletions
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110
platform/features/layout/src/LayoutDrag.js
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@ -54,63 +54,63 @@ define(
* @memberof platform/features/layout
*/
function LayoutDrag(rawPosition, posFactor, dimFactor, gridSize) {
// Convert a delta from pixel coordinates to grid coordinates,
// rounding to whole-number grid coordinates.
function toGridDelta(pixelDelta) {
return pixelDelta.map(function (v, i) {
return Math.round(v / gridSize[i]);
});
}
// Utility function to perform element-by-element multiplication
function multiply(array, factors) {
return array.map(function (v, i) {
return v * factors[i];
});
}
// Utility function to perform element-by-element addition
function add(array, other) {
return array.map(function (v, i) {
return v + other[i];
});
}
// Utility function to perform element-by-element max-choosing
function max(array, other) {
return array.map(function (v, i) {
return Math.max(v, other[i]);
});
}
function getAdjustedPosition(pixelDelta) {
var gridDelta = toGridDelta(pixelDelta);
return {
position: max(add(
rawPosition.position,
multiply(gridDelta, posFactor)
), [0, 0]),
dimensions: max(add(
rawPosition.dimensions,
multiply(gridDelta, dimFactor)
), [1, 1])
};
}
return {
/**
* Get a new position object in grid coordinates, with
* position and dimensions both offset appropriately
* according to the factors supplied in the constructor.
* @param {number[]} pixelDelta the offset from the
* original position, in pixels
* @memberof platform/features/layout.LayoutDrag#
*/
getAdjustedPosition: getAdjustedPosition
};
this.rawPosition = rawPosition;
this.posFactor = posFactor;
this.dimFactor = dimFactor;
this.gridSize = gridSize;
}
// Convert a delta from pixel coordinates to grid coordinates,
// rounding to whole-number grid coordinates.
function toGridDelta(gridSize, pixelDelta) {
return pixelDelta.map(function (v, i) {
return Math.round(v / gridSize[i]);
});
}
// Utility function to perform element-by-element multiplication
function multiply(array, factors) {
return array.map(function (v, i) {
return v * factors[i];
});
}
// Utility function to perform element-by-element addition
function add(array, other) {
return array.map(function (v, i) {
return v + other[i];
});
}
// Utility function to perform element-by-element max-choosing
function max(array, other) {
return array.map(function (v, i) {
return Math.max(v, other[i]);
});
}
/**
* Get a new position object in grid coordinates, with
* position and dimensions both offset appropriately
* according to the factors supplied in the constructor.
* @param {number[]} pixelDelta the offset from the
* original position, in pixels
*/
LayoutDrag.prototype.getAdjustedPosition = function (pixelDelta) {
var gridDelta = toGridDelta(this.gridSize, pixelDelta);
return {
position: max(add(
this.rawPosition.position,
multiply(gridDelta, this.posFactor)
), [0, 0]),
dimensions: max(add(
this.rawPosition.dimensions,
multiply(gridDelta, this.dimFactor)
), [1, 1])
};
};
return LayoutDrag;
}