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Code Issues Actions 9 Packages Projects Releases Wiki Activity

[Plot] Separate out pan/zoom stack

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Create a separate script/class for the pan-zoom stack,
to simplify PlotController for testability and
maintainability. WTD-533.
This commit is contained in:
Victor Woeltjen 2014-12-01 13:48:38 -08:00
parent ac00c52589
commit 1b4286344d
2 changed files with 79 additions and 23 deletions
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43
platform/features/plot/src/PlotController.js
View File

@ -4,8 +4,13 @@
* Module defining PlotController. Created by vwoeltje on 11/12/14.
*/
define(
["./PlotPreparer", "./PlotPalette", "../lib/moment.min.js"],
function (PlotPreparer, PlotPalette) {
[
"./PlotPreparer",
"./PlotPalette",
"./PlotPanZoomStack",
"../lib/moment.min.js"
],
function (PlotPreparer, PlotPalette, PlotPanZoomStack) {
"use strict";
var AXIS_DEFAULTS = [
@ -22,10 +27,7 @@ define(
function PlotController($scope) {
var mousePosition,
marqueeStart,
panZoomStack = [{
dimensions: [],
origin: []
}],
panZoomStack = new PlotPanZoomStack([], []),
domainOffset;
function formatDomainValue(v) {
@ -44,8 +46,8 @@ define(
function pixelToDomainRange(x, y, width, height, domainOffset) {
var panZoom = panZoomStack[panZoomStack.length - 1],
offset = [ domainOffset || 0, 0],
var panZoom = panZoomStack.getPanZoom(),
offset = [ domainOffset || 0, 0 ],
origin = panZoom.origin,
dimensions = panZoom.dimensions;
@ -92,7 +94,7 @@ define(
}
function updateDrawingBounds() {
var panZoom = panZoomStack[panZoomStack.length - 1];
var panZoom = panZoomStack.getPanZoom();
$scope.draw.dimensions = panZoom.dimensions;
$scope.draw.origin = panZoom.origin;
@ -129,10 +131,10 @@ define(
formatRangeValue
);
panZoomStack[0] = {
origin: prepared.getOrigin(),
dimensions: prepared.getDimensions()
};
panZoomStack.setBasePanZoom(
prepared.getOrigin(),
prepared.getDimensions()
);
domainOffset = prepared.getDomainOffset();
@ -207,10 +209,7 @@ define(
Math.max(a[1], b[1]) - origin[1]
];
panZoomStack.push({
origin: origin,
dimensions: dimensions
});
panZoomStack.pushPanZoom(origin, dimensions);
}
$scope.axes = [ {}, {} ];
@ -249,16 +248,14 @@ define(
}
},
isZoomed: function () {
return panZoomStack.length > 1;
return panZoomStack.getDepth() > 1;
},
stepBackPanZoom: function () {
if (panZoomStack.length > 1) {
panZoomStack.pop();
updateDrawingBounds();
}
panZoomStack.popPanZoom();
updateDrawingBounds();
},
unzoom: function () {
panZoomStack = [panZoomStack[0]];
panZoomStack.clearPanZoom();
updateDrawingBounds();
}

59
platform/features/plot/src/PlotPanZoomStack.js Normal file
View File

@ -0,0 +1,59 @@
/*global define*/
define(
[],
function () {
"use strict";
function PlotPanZoomStack(origin, dimensions) {
var stack = [{ origin: origin, dimensions: dimensions }];
function getDepth() {
return stack.length;
}
function pushPanZoom(origin, dimensions) {
stack.push({ origin: origin, dimensions: dimensions });
}
function popPanZoom() {
if (stack.length > 1) {
stack.pop();
}
}
function clearPanZoom() {
stack = [stack[0]];
}
function setBasePanZoom(origin, dimensions) {
stack[0] = { origin: origin, dimensions: dimensions };
}
function getPanZoom() {
return stack[stack.length - 1];
}
function getOrigin() {
return getPanZoom().origin;
}
function getDimensions() {
return getPanZoom().dimensions;
}
return {
getDepth: getDepth,
pushPanZoom: pushPanZoom,
popPanZoom: popPanZoom,
setBasePanZoom: setBasePanZoom,
clearPanZoom: clearPanZoom,
getPanZoom: getPanZoom,
getOrigin: getOrigin,
getDimensions: getDimensions
};
}
return PlotPanZoomStack;
}
);