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Touch support #24

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0912e79
added touch support
nilayjha99 Jun 14, 2020
e067edc
fix: basic issues with touch
nilayjha99 Jun 15, 2020
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67 changes: 41 additions & 26 deletions lib/js/idcrop/IdCrop.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,9 +14,9 @@ class IdCrop {
allowUpload:
typeof config.allowUpload !== "undefined" ? config.allowUpload : true,
closeButtonSelector:
typeof config.closeButtonSelector !== "undefined"
? config.closeButtonSelector
: false,
typeof config.closeButtonSelector !== "undefined"
? config.closeButtonSelector
: false,
containers: {
displayArea: document.querySelector(config.displaySelector),
toolbarArea: config.toolbarSelector
Expand All @@ -29,81 +29,80 @@ class IdCrop {
croppingArea: {
overlayColor:
typeof config.croppingArea !== "undefined" &&
typeof config.croppingArea.overlayColor !== "undefined"
typeof config.croppingArea.overlayColor !== "undefined"
? config.croppingArea.overlayColor
: "rgba(0, 0, 0, 0.7)",
stroke:
typeof config.croppingArea !== "undefined" &&
typeof config.croppingArea.stroke !== "undefined"
typeof config.croppingArea.stroke !== "undefined"
? config.croppingArea.stroke
: true,
strokeColor:
typeof config.croppingArea !== "undefined" &&
typeof config.croppingArea.strokeColor !== "undefined"
typeof config.croppingArea.strokeColor !== "undefined"
? config.croppingArea.strokeColor
: "white",
strokeDashed:
typeof config.croppingArea !== "undefined" &&
typeof config.croppingArea.strokeDashed !== "undefined"
typeof config.croppingArea.strokeDashed !== "undefined"
? config.croppingArea.strokeDashed
: true,
strokeWeight:
typeof config.croppingArea !== "undefined" &&
typeof config.croppingArea.strokeWeight !== "undefined"
typeof config.croppingArea.strokeWeight !== "undefined"
? config.croppingArea.strokeWeight
: 2
},
crop: {
overlayColor:
typeof config.crop !== "undefined" &&
typeof config.crop.overlayColor !== "undefined"
typeof config.crop.overlayColor !== "undefined"
? config.crop.overlayColor
: "rgba(0, 0, 0, 0)",
fillColor:
typeof config.crop !== "undefined" &&
typeof config.crop.fillColor !== "undefined"
typeof config.crop.fillColor !== "undefined"
? config.crop.fillColor
: false,
showImage:
typeof config.crop !== "undefined" &&
typeof config.crop.showImage !== "undefined"
typeof config.crop.showImage !== "undefined"
? config.crop.showImage
: true,
stroke:
typeof config.crop !== "undefined" &&
typeof config.crop.stroke !== "undefined"
typeof config.crop.stroke !== "undefined"
? config.crop.stroke
: true,
strokeColor:
typeof config.crop !== "undefined" &&
typeof config.crop.strokeColor !== "undefined"
typeof config.crop.strokeColor !== "undefined"
? config.crop.strokeColor
: false,
strokeDashed:
typeof config.crop !== "undefined" &&
typeof config.crop.strokeDashed !== "undefined"
typeof config.crop.strokeDashed !== "undefined"
? config.crop.strokeDashed
: false,
strokeWeight:
typeof config.crop !== "undefined" &&
typeof config.crop.strokeWeight !== "undefined"
typeof config.crop.strokeWeight !== "undefined"
? config.crop.strokeWeight
: 0
},
handles: {
class:
typeof config.handles !== "undefined" &&
typeof config.handles.class !== "undefined"
typeof config.handles.class !== "undefined"
? config.handles.class
: "",
defaultStyles:
typeof config.handles !== "undefined" &&
typeof config.handles.defaultStyles !== "undefined"
typeof config.handles.defaultStyles !== "undefined"
? config.handles.defaultStyles
: true
}
};

this.handles = [];
this.points = [];
}
Expand All @@ -127,7 +126,7 @@ class IdCrop {
closeButton.appendChild(closeButtonText);
c.toolbarArea.appendChild(closeButton);
}
closeButton.addEventListener("click", function() {
closeButton.addEventListener("click", function () {
self.startCroppingPolygon();
});
}
Expand Down Expand Up @@ -158,14 +157,19 @@ class IdCrop {

if (!c.toolbarArea || !this.config.allowUpload) {
var src = helpers.getBgSource(c.displayArea);
helpers.dataURIFromSrc(src).then(function(base64) {
helpers.dataURIFromSrc(src).then(function (base64) {
self.startCroppingArea(base64, self);
});
}

window.addEventListener("mouseup", function() {
window.addEventListener("mouseup", function () {
if (self.config.containers.previewArea) self.drawPreview(self);
document.onmousemove = function () { };
});

window.addEventListener("touchend", function () {
if (self.config.containers.previewArea) self.drawPreview(self);
document.onmousemove = function() {};
document.ontouchmove = function () { };
});

var created = new CustomEvent("created", { detail: self.config });
Expand All @@ -176,7 +180,7 @@ class IdCrop {
const displayArea = self.config.containers.displayArea;

self.cropArea = new CropArea(displayArea, base64);
self.cropArea.create().then(function(img) {
self.cropArea.create().then(function (img) {
self.image = img;
displayArea.style.backgroundImage = "url('" + base64 + "')";
});
Expand All @@ -186,7 +190,11 @@ class IdCrop {
}

self.handles = [];
self.cropArea.canvas.addEventListener("mousedown", function(event) {
self.cropArea.canvas.addEventListener("mousedown", function (event) {
self.createHandles(event, self);
});

self.cropArea.canvas.addEventListener("touchcancel", function (event) {
self.createHandles(event, self);
});
}
Expand All @@ -210,6 +218,7 @@ class IdCrop {
self.points.push(point);

if (self.handles.length == self.config.numPoints) {
// when the number of points are placed --> crop the area
self.startCroppingPolygon(self);
}
}
Expand Down Expand Up @@ -237,9 +246,15 @@ class IdCrop {
for (const handle of self.handles) {
const config = self.config.croppingArea;
handle.direction = handle.setDirection(self.points);
handle.node.addEventListener("mousedown", function(event) {

handle.node.addEventListener("mousedown", function (event) {
self.cropPolygon.startResizing(event, self.points, config);
});

handle.node.addEventListener("touchstart", function (event) {
self.cropPolygon.startResizing(event, self.points, config);
});

}

self.drawPreview(self);
Expand All @@ -264,7 +279,7 @@ class IdCrop {
reset() {
this.cropArea = undefined;
this.cropPolygon = undefined;

this.handles = [];
this.points = [];
this.image = "data:image/jpeg;base64,";
Expand Down
13 changes: 12 additions & 1 deletion lib/js/idcrop/Polygon.js
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,6 @@ class Polygon {
const hdim = handle.offsetWidth;
const direction = parseInt(handle.id.substr(10), 10);
const bounds = this.canvas.getBoundingClientRect();

let that = this;
document.onmousemove = function(event) {
let x = event.clientX;
Expand All @@ -78,6 +77,18 @@ class Polygon {

that.resize(handle, direction, points, x, y, config);
};

document.ontouchmove = function(event) {
let x = event.changedTouches[0].clientX;
let y = event.changedTouches[0].clientY;

if (x < bounds.left) x = bounds.left;
if (x > bounds.right - hdim) x = bounds.right - hdim;
if (y < bounds.top) y = bounds.top;
if (y > bounds.bottom - hdim) y = bounds.bottom - hdim;

that.resize(handle, direction, points, x, y, config);
};
}
}

Expand Down
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