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Commit b43b2d27 authored by Romain Courteaud's avatar Romain Courteaud
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erp5_document_scanner: skip not needed data conversions

parent 3e4f3f36
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Showing with 148 additions and 93 deletions
bt5/erp5_document_scanner/PathTemplateItem/web_page_module/scanner_gadget_document_scanner_js.js
View file @ b43b2d27
/*jslint indent: 2, unparam: true, bitwise: true */
/*global rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO, promiseEventListener, domsugar, createImageBitmap, FormData, Caman, FileReader, DataView*/
(function (rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO, promiseEventListener, domsugar, createImageBitmap, FormData, caman, FileReader, DataView) {
/*global rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO,
promiseEventListener, domsugar, createImageBitmap, FormData, Caman,
FileReader, DataView, URL*/
(function (rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO,
promiseEventListener, domsugar, createImageBitmap, FormData, caman,
FileReader, DataView, URL) {
"use strict";
//////////////////////////////////////////////////
......@@ -17,8 +21,15 @@
});
}
function getOrientationFromDataUrl(data_url) {
var view = new DataView(data_url),
function promiseCanvasToBlob(canvas, compression) {
return new Promise(function (resolve) {
// XXX too slow, takes 2 seconds or more on mobile.
canvas.toBlob(resolve, 'image/jpeg', compression);
});
}
function getOrientationFromArrayBuffer(array_buffer) {
var view = new DataView(array_buffer),
length = view.byteLength,
offset = 2,
marker,
......@@ -59,12 +70,9 @@
}
function getOrientation(blob) {
return RSVP.Queue()
.push(function () {
return jIO.util.readBlobAsArrayBuffer(blob);
})
return new RSVP.Queue(jIO.util.readBlobAsArrayBuffer(blob))
.push(function (evt) {
return getOrientationFromDataUrl(evt.target.result);
return getOrientationFromArrayBuffer(evt.target.result);
});
}
......@@ -133,7 +141,7 @@
this.render(function () {
// XXX canceller should be called automatically ?
canceller();
resolve([this.context.canvas, settings.compression]);
resolve();
});
});
return local_caman;
......@@ -391,6 +399,105 @@
});
}
function fixPhotoOrientation(blob) {
var orientation;
return getOrientation(blob)
.push(function (result) {
orientation = result;
// If orientation is correct, return the original blob
if ((orientation < 2) || (8 < orientation)) {
return blob;
}
// Else, transform the image
return new RSVP.Queue(createImageBitmap(blob))
.push(function (bitmap) {
var height = bitmap.height,
width = bitmap.width,
canvas = domsugar('canvas'),
ctx;
if (4 < orientation && orientation < 9) {
canvas.width = height;
canvas.height = width;
} else {
canvas.width = width;
canvas.height = height;
}
ctx = canvas.getContext('2d');
// transform context before drawing image
switch (orientation) {
case 2:
ctx.transform(-1, 0, 0, 1, width, 0);
break;
case 3:
ctx.transform(-1, 0, 0, -1, width, height);
break;
case 4:
ctx.transform(1, 0, 0, -1, 0, height);
break;
case 5:
ctx.transform(0, 1, 1, 0, 0, 0);
break;
case 6:
ctx.transform(0, 1, -1, 0, height, 0);
break;
case 7:
ctx.transform(0, -1, -1, 0, height, width);
break;
case 8:
ctx.transform(0, -1, 1, 0, 0, width);
break;
default:
break;
}
ctx.drawImage(bitmap, 0, 0);
return promiseCanvasToBlob(canvas);
});
});
}
function fixPhotoColor(blob, settings) {
if (!(settings.brightness || settings.contrast || settings.enable_greyscale)) {
return blob;
}
var canvas;
return new RSVP.Queue(createImageBitmap(blob))
.push(function (bitmap) {
canvas = domsugar('canvas');
canvas.width = bitmap.width;
canvas.height = bitmap.height;
canvas.getContext('2d').drawImage(bitmap, 0, 0);
return handleCaman(canvas, settings);
})
.push(function () {
return promiseCanvasToBlob(canvas);
});
}
function createLoadedImgElement(url) {
var img = domsugar('img', {src: url});
return new RSVP.Queue(RSVP.any([
promiseEventListener(img, 'load', false),
// Crash if it fails to load
new RSVP.Queue(promiseEventListener(img, 'error', false))
.push(function () {
throw new Error("Can't load the image src");
})
]))
.push(function () {
return img;
});
}
// Capture the media stream
function captureAndRenderPicture(gadget) {
var settings = gadget.state.preferred_image_settings_data,
......@@ -398,8 +505,8 @@
image_capture = new window.ImageCapture(
gadget.element.querySelector('video').srcObject.getVideoTracks()[0]
),
canvas = domsugar('canvas', {'class': 'canvas'}),
div;
original_blob_url,
blob_url;
return new RSVP.Queue()
.push(function () {
......@@ -411,84 +518,34 @@
return image_capture.takePhoto({imageWidth: capabilities.imageWidth.max});
})
.push(function (blob) {
return RSVP.all([
createImageBitmap(blob),
getOrientation(blob)
]);
})
.push(function (result_list) {
var bitmap = result_list[0],
orientation = result_list[1],
height = bitmap.height,
width = bitmap.width,
ctx;
if (4 < orientation && orientation < 9) {
canvas.width = height;
canvas.height = width;
} else {
canvas.width = width;
canvas.height = height;
}
ctx = canvas.getContext('2d');
// transform context before drawing image
switch (orientation) {
case 2:
ctx.transform(-1, 0, 0, 1, width, 0);
break;
case 3:
ctx.transform(-1, 0, 0, -1, width, height);
break;
case 4:
ctx.transform(1, 0, 0, -1, 0, height);
break;
case 5:
ctx.transform(0, 1, 1, 0, 0, 0);
break;
case 6:
ctx.transform(0, 1, -1, 0, height, 0);
break;
case 7:
ctx.transform(0, -1, -1, 0, height, width);
break;
case 8:
ctx.transform(0, -1, 1, 0, 0, width);
break;
default:
break;
}
ctx.drawImage(bitmap, 0, 0);
return canvas.toDataURL("image/jpeg");
})
.push(function (result) {
var img = domsugar("img", {"src": result});
gadget.detached_promise_dict.media_stream.cancel('Not needed anymore, as captured');
div = gadget.element.querySelector(".camera-input");
// Display photo while doing calculation
original_blob_url = URL.createObjectURL(blob);
var img = domsugar("img", {"src": original_blob_url}),
div = gadget.element.querySelector(".camera-input");
div.replaceChild(img, div.firstElementChild);
return fixPhotoOrientation(blob);
})
.push(function (result_list) {
if (settings.brightness || settings.contrast || settings.enable_greyscale || settings.compression) {
return handleCaman(canvas, settings);
}
return [canvas, settings.compression];
.push(function (blob) {
return fixPhotoColor(blob, settings);
})
.push(function (result_list) {
var compression = settings.compression || 1;
canvas = result_list[0];
.push(function (blob) {
blob_url = URL.createObjectURL(blob);
return RSVP.all([
gadget.getTranslationList(["Delete", "Save", "Page"]),
new Promise(function (resolve) {
resolve(canvas.toDataURL("image/jpeg", compression));
}),
createLoadedImgElement(blob_url),
buildPreviousThumbnailDom(gadget)
]);
})
.push(function (result_list) {
var data_url = result_list[1],
img = domsugar("img", {"src": data_url}),
var img = result_list[1],
div,
defer = RSVP.defer();
// Prepare the cropper canvas
div = domsugar('div', {'class': 'camera'}, [
domsugar('div', {'class': 'camera-header'}, [
......@@ -526,6 +583,8 @@
return defer.promise;
})
.push(function (cropper) {
URL.revokeObjectURL(blob_url);
URL.revokeObjectURL(original_blob_url);
gadget.cropper = cropper;
});
}
......@@ -741,16 +800,10 @@
if (evt.target.className.indexOf("confirm-btn") !== -1) {
return new RSVP.Queue()
.push(function () {
var canvas = gadget.cropper.getCroppedCanvas();
return new Promise(function (resolve) {
var canvas = gadget.cropper.getCroppedCanvas(),
// XXX too slow, takes 2 seconds or more on mobile.
canvas.toBlob(resolve, 'image/jpeg', 0.85);
});
})
.push(function (blob) {
return jIO.util.readBlobAsDataURL(blob);
})
.push(function (evt) {
data_url = canvas.toDataURL("image/jpeg", 0.85);
state_dict = {
preferred_cropped_canvas_data: gadget.cropper.getData(),
display_step: 'display_video',
......@@ -758,7 +811,7 @@
page_count: gadget.state.page_count + 1
};
// Keep image date, as user may need to display it again
state_dict['blob_url_' + gadget.state.page_count] = evt.target.result;
state_dict['blob_url_' + gadget.state.page_count] = data_url;
state_dict['blob_state_' + gadget.state.page_count] = 'saving';
state_dict['blob_uuid_' + gadget.state.page_count] = null;
......@@ -874,4 +927,6 @@
.declareAcquiredMethod("getTranslationList", "getTranslationList");
}(rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO, promiseEventListener, domsugar, createImageBitmap, FormData, Caman, FileReader, DataView));
\ No newline at end of file
}(rJS, RSVP, window, document, navigator, Cropper, Promise, JSON, jIO,
promiseEventListener, domsugar, createImageBitmap, FormData, Caman,
FileReader, DataView, URL));
\ No newline at end of file
bt5/erp5_document_scanner/PathTemplateItem/web_page_module/scanner_gadget_document_scanner_js.xml
View file @ b43b2d27
......@@ -230,7 +230,7 @@
</item>
<item>
<key> <string>actor</string> </key>
<value> <string>romain</string> </value>
<value> <string>zope</string> </value>
</item>
<item>
<key> <string>comment</string> </key>
......@@ -244,7 +244,7 @@
</item>
<item>
<key> <string>serial</string> </key>
<value> <string>982.26648.29015.8021</string> </value>
<value> <string>982.57218.46980.24217</string> </value>
</item>
<item>
<key> <string>state</string> </key>
......@@ -262,7 +262,7 @@
</tuple>
<state>
<tuple>
<float>1583748517.63</float>
<float>1585582286.9</float>
<string>UTC</string>
</tuple>
</state>
......
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