I modified the PresenterCard sample code to use my firebase database instead of the graph library. However, it does not display the images properly. Essentially the image is not scaling to fit the view. I have
presenterImageView.contentMode = .scaleAspectFill
how can I fix this?
EDIT:
I use the following code to download the image
storageRef.getData(maxSize: 1 * 1024 * 1024) { (data, error) -> Void in
let pic = UIImage(data: data!)
if let image = pic {
self.presenterImageView.frame.size.height = image.height
Motion.async { [weak self, image = image] in
self?.presenterImageView.image = image
}
}
}
card.frame.origin.x = 0
card.frame.origin.y = 0
card.frame.size.width = bounds.width
frame.size.height = card.bounds.height
presenterImageView.frame.size.height = 300
The image loads but it doesn't scale.
Solved my own problem. Had to remove the line:
self.presenterImageView.frame.size.height = image.height
Works fine now!
Related
I have this xp system and I save each id in a json with a name.
How can I display a top 5 people?
Is there a way to retrieve the data and display 5 at a time?
I would try to sort and after creating a forum to display fixed 5 but I don't know exactly how I could do that.
Any ideas?
const xp = require("../../xp.json")
if(!xp[message.author.id]) {
xp[message.author.id] = {
xp: 0,
level:1
};
}
let curxp = xp[message.author.id].xp;
let curlvl = xp[message.author.id].level;
let nxtLevelXp = curlvl * 300;
let difference = nxtLevelXp - curxp;
For example, this is how I retrieve the data for display
Use the Object.entries , here is an example -
const xp = require("../../xp.json");
var top5 = Object.entries(xp).sort((a,b)=>b[1].level - a[1].level).splice(0,5);
Try mapping them
I tried pdf2json:
const PDFParser = require("pdf2json");
let pdfParser = new PDFParser();
pdfParser.loadPDF("./30x40.pdf"); // ex: ./abc.pdf
pdfParser.on("pdfParser_dataReady", pdfData => {
width = pdfData.formImage.Width; // pdf width
height = pdfData.formImage.Pages[0].Height; // page height
console.log(`Height : ${height}`) // logs 70.866
console.log(`Width : ${width}`) // logs 53.15
});
But it gave the dimensions in a unknown units!
The dimensions in pixels will help me include them in the pdf-poppler module that converts a pdf file to an image and it needs the pdf file height in pixels.
Try calipers.
Code example:
const Calipers = require('calipers')('png', 'pdf');
Calipers.measure('./30x40.pdf')
.then(data => {
const { width, height } = data.pages[0];
});
Alternatively, try a module which converts it without needing width/height:
pdf2pic pdf-image node-imagemagick
If you're set on using pdf2json, please read this bit of documentation describing the units of the output.
Bit late to the party, but as discussed here: stackoverflow pdf2json unit
you can multiply your width and height by 24
Just like:
width = pdfData.formImage.Width * 24; // pdf width
height = pdfData.formImage.Pages[0].Height * 24; // page height
and you get Pixel.
I hope you are all well and safe.
In NodeJS, I wanted to create a grid on top of an image. Like this:
Image without grid
Image with grid
Can someone tell me, please, how can I achieve this (some library or something)?
After creating the grid, I would like to go square by square and check the information for each square. Does anyone have any ideas?
Thank you very much for your time!
The first answer has a native Cairo dependency... Below I used pureimage instead, which has Pure JS implementations of jpeg and png encoding.
static drawParallel = (canvas, step, isYAxis) => {
const c2d = canvas.getContext('2d')
const numberOfSteps = (canvas.width / step) | 0
const end = isYAxis ? canvas.height : canvas.width
console.log(`Steps: ${numberOfSteps}\n`)
c2d.lineWidth = 1.1 // PureImage hides thin lines
c2d.strokeStyle = 'rgba(255,192,203,0.69)'
for (let i = 1; i < numberOfSteps; i++) {
const from = i * step
const to = i * step
const mx = isYAxis ? [from, 0, to, end] : [0, from, end, to]
console.log(`Stroking ${mx[0]}, ${mx[1]} to ${mx[2]}, ${mx[3]}`)
c2d.beginPath()
c2d.moveTo(mx[0], mx[1])
c2d.lineTo(mx[2], mx[3])
c2d.stroke()
}
}
source: https://stackblitz.com/edit/feathersjs-7kqlyt
I would use Canvas. You can use it for all sorts of image jobs and editing. For example, you could get a transparent PNG image of the grid and lay it on:
const Canvas = require("canvas");
const canvas = Canvas.createCanvas(619, 319);
const ctx = canvas.getContext("2d");
let img = await Canvas.loadImage("./path/to/image.png");
ctx.drawImage(img, 0, 0, img.width, img.height);
let grid = await Canvas.loadImage("./path/to/grid.png");
ctx.drawImage(grid, 0, 0, canvas.width, canvas.height);
console.log(canvas.toDataURL());
I myself managed to get something like this.
I'm scaling a displacement map on click but would like that map to fade away once it reaches almost full scale. The idea is that the filter should be non-existent after a couple of seconds.
const app = new PIXI.Application({
view: document.querySelector("#canvas"),
width: 512,
height: 512
});
const logo = PIXI.Sprite.fromImage("https://unsplash.it/600");
const displacement = PIXI.Sprite.fromImage("https://images.unsplash.com/photo-1541701494587-cb58502866ab?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&w=1000&q=80");
const filter = new PIXI.filters.DisplacementFilter(displacement);
logo.anchor.set(0.5);
logo.position.set(256);
logo.interactive = true;
displacement.anchor.set(0.5);
displacement.position.set(256);
displacement.scale.set(0.05)
displacement.alpha = 1
app.stage.filterArea = app.screen;
app.stage.filters = [filter];
app.stage.addChild(logo, displacement);
app.ticker.add(function() {
displacement.scale.x += 0.05
displacement.scale.y += 0.05
if (displacement.scale.x > 10) app.ticker.stop()
});
logo.on('mousedown', function() {
displacement.scale.set(0.05)
app.ticker.start()
});
Here's what I have so far:
https://codepen.io/mariojankovic/pen/pojjNae?editors=0111
I've only just started looking at Pixi but I think you want to use the scale property of the displacement filter. This value says how far to shift. Reducing this value to 0 will lessen its effect to none.
https://pixijs.download/dev/docs/PIXI.filters.DisplacementFilter.html
https://pixijs.download/dev/docs/PIXI.filters.DisplacementFilter.html#scale
The way it works is it uses the values of the displacement map to look
up the correct pixels to output. This means it's not technically
moving the original. Instead, it's starting at the output and asking
"which pixel from the original goes here". For example, if a
displacement map pixel has red = 1 and the filter scale is 20, this
filter will output the pixel approximately 20 pixels to the right of
the original.
https://codepen.io/PAEz/pen/BaoREwv
const app = new PIXI.Application({
view: document.querySelector("#canvas"),
width: 512,
height: 512
});
const logo = PIXI.Sprite.fromImage("https://unsplash.it/600");
const displacement = PIXI.Sprite.fromImage(
"https://images.unsplash.com/photo-1541701494587-cb58502866ab?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&w=1000&q=80"
);
const filter = new PIXI.filters.DisplacementFilter(displacement);
logo.anchor.set(0.5);
logo.position.set(256);
logo.interactive = true;
displacement.anchor.set(0.5);
displacement.position.set(256);
displacement.scale.set(0.0);
displacement.alpha = 1;
app.stage.filterArea = app.screen;
app.stage.filters = [filter];
app.stage.addChild(logo, displacement);
const displacementScaleFrom = 0.05;
const displacementScaleTo = 10 ;
const displacementStep = 0.05;
const filterScaleFrom = 20;// the default value for the filter is 20
const filterStep = filterScaleFrom / ((displacementScaleTo-displacementScaleFrom) / displacementStep);
app.ticker.add(function () {
displacement.scale.x += displacementStep;
displacement.scale.y += displacementStep;
filter.scale.x -= filterStep;
filter.scale.y -= filterStep;
if (displacement.scale.x >= displacementScaleTo) {
app.ticker.stop();
filter.scale.x = 0;
filter.scale.y = 0;
}
});
logo.on("mousedown", function () {
displacement.scale.set(displacementScaleFrom);
filter.scale.x = filterScaleFrom;
filter.scale.y = filterScaleFrom;
app.ticker.start();
});
I am trying to automate product upload on magento using python and selenium, however i am running into problem uploading images.
I have tried to target the input tag with id="fileupload"
driver.find_element_by_id("fileupload").send_keys('C:\\Users\\PC\\Desktop\\Code\\magento-bot\\image1.png')
It seems to work because when i place the mouse pointer on the upload area the file name shows up, but after submiting there is no image.
I have also tried to click the upload area then select file to upload by doing this:
uploadElement = driver.find_element_by_xpath('//html/body/div[2]/main/div[2]/div/div/div/div[2]/div[5]/div[2]/fieldset/div/div[2]/div[1]/div[1]/div[1]')
uploadElement.click()
driver.switch_to.active_element().send_keys(os.getcwd()+"\image1.png)
but i end up with this error 'FirefoxWebElement' object is not callable
Lastly, i tried to simulate drag and drop like this:
element = os.getcwd()+"\image1.png"
target = bot.find_element_by_id('fileupload')
ActionChains(bot).drag_and_drop(element, target).perform
but i get the error below
AttributeError("move_to requires a WebElement")
Any help will be appreciated.
Probably duplicate of below
Python with Selenium: Drag and Drop from file system to webdriver?
JS_DROP_FILE = """
var target = arguments[0],
offsetX = arguments[1],
offsetY = arguments[2],
document = target.ownerDocument || document,
window = document.defaultView || window;
var input = document.createElement('INPUT');
input.type = 'file';
input.onchange = function () {
var rect = target.getBoundingClientRect(),
x = rect.left + (offsetX || (rect.width >> 1)),
y = rect.top + (offsetY || (rect.height >> 1)),
dataTransfer = { files: this.files };
['dragenter', 'dragover', 'drop'].forEach(function (name) {
var evt = document.createEvent('MouseEvent');
evt.initMouseEvent(name, !0, !0, window, 0, 0, 0, x, y, !1, !1, !1, !1, 0, null);
evt.dataTransfer = dataTransfer;
target.dispatchEvent(evt);
});
setTimeout(function () { document.body.removeChild(input); }, 25);
};
document.body.appendChild(input);
return input;
"""
def drag_and_drop_file(drop_target, path):
driver = drop_target.parent
file_input = driver.execute_script(JS_DROP_FILE, drop_target, 0, 0)
file_input.send_keys(path)
See below thread as well
Selenium: Drag and Drop from file system to WebDriver?
How to simulate HTML5 Drag and Drop in Selenium Webdriver?
The interim solution to my problem is AutoIt.
Big thanks to #KunduK How to upload image with angular components using python selenium
I targeted the xpath of the image upload area then autoit did the rest with the code below:
autoit.win_wait_active("File Upload",5)
if autoit.win_exists("File Upload"):
autoit.control_send("File Upload","Edit1",filepath+"{ENTER}")```