I'm building a macOS app with SwiftUI, and I'm trying to remove (or even cover up) the border added to a List item when I right-click it.
Here it is by default:
Now with a right-click and a contextMenu view modifier:
I figured this is an NSTableView quirk, so I tried the approaches in these three Stack Overflow posts:
Customize right click highlight on view-based NSTableView
NSTableView with menu, how to change the border color with right click?
Disabling the NSTableView row focus ring
NSTableView: blue outline on right-clicked rows
I couldn't get any of those to work, and that may be due to the fact that I can't subclass an NSTableView, but can only override its properties and methods with an extension. Here's what I have so far that successfully removes the default table background and such:
extension NSTableView{
open override func viewDidMoveToWindow() {
super.viewDidMoveToWindow()
//Remove default table styles
backgroundColor = NSColor.clear
enclosingScrollView!.drawsBackground = false
selectionHighlightStyle = .none
}
}
Is there any way to remove that right-click border in SwiftUI? I'm even open to covering it with other views, but I can't seem to draw SwiftUI views in that space around the table cell.
I found a workaround for this. I put my List in a ZStack and then set its opacity to zero. I then built out a fully custom version of the same list, but using LazyVStack:
//Message List
ZStack{
//Ghost list for keyboard control
List($model.messages, id: \.self, selection: $model.selectedMessages){ $message in
MessageItemView(message: $message)
}
.focusable()
.opacity(0)
//Custom UI for the above List
ScrollView{
ZStack{
LazyVStack(spacing: 5){
ForEach($model.messagesToday){ $message in
MessageItemView(message: $message)
}
}
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
Each list is bound to the same model, so if I click a message to select it in the custom UI, the same thing gets selected in the invisible List. All the keyboard shortcuts that come with table use in a List look like they are working on the custom version.
So how does this solve my original problem? You can right-click on the custom MessageItemView and the default ring around the cell is invisible, but the contextMenu still works (it's defined inside my MessageItemView).
This isn't as elegant as I'd like, but it's nice to have 100% control over the UI but still get all the keyboard controls that come for free with a List.
I am working on the below demo. Why am I not able to add id sample to the object? I am trying to control the element style through css but it is not working
var paper = Raphael("container", 500, 300);
var dot = paper.circle(50, 50, 30).attr({
stroke: "#000",
"stroke-width": 5
}).data("id", "sample");
#sample{
fill:red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/raphael/2.1.0/raphael-min.js"></script>
<div id="container"></div>
The problem is data() doesn't refer to svg attributes on an element, but custom data on a Raphael element, that it can access.
If you want to set the id attribute, you would need to try one of the following...
set the 'id' within the attr({}) definition you are using (however, iirc some versions of Raphael don't work with that), if not you would need to do
dot.attr({ 'id', 'sample' }); // or try the following
dot.node.setAttribute('id', 'sample'); // or
dot.node.id = 'sample';
I am building grid in which the header needs to be resizable.
Basically, User can click on the edges of the header column then drag it for resize.
Currently I have a component for each header column and I suppose it needs some event handling here but I cannot figure out which one.
Please suggest on what approach should be followed.
Note: I am using Ember version 1.13. Also, cannot use ember-table.
Back in the day when i did a similar thing i used
https://jqueryui.com/resizable/
So i made a component
resizeable-widget.js
didInsertElement: function() {
this._super(...arguments);
// $('#rezisable-widget').draggable({ scroll: true, scrollSpeed: 20});
$('#rezisable-widget').resizable({
minHeight: 210,
minWidth: 500
});
},
resizeable-widget.hbs
<div id="rezisable-widget" class="ui-widget-content">
</div>
I'm having some issues exporting my Charts to PDF.
I have this div
<div id="chart-area">
<button type="button" id="btnPrint_" onClick="Print1()">Print</button>
<?php echo '<h2 id="title">'.$_SESSION['team_name'].'</h2>'; ?>
<canvas id="myChart" width="800" height="400"></canvas>
<div id="legend"></div>
</div>
and I'm creating my chart using ChartJS
$( document ).ready(function(){
var helpers = Chart.helpers;
var canvas = document.getElementById('myChart');
var data = {
labels: unique_dates,
datasets: [
{
label: "Ticket Count",
fillColor: "rgba(107, 110, 111, 0.6)",
strokeColor: "rgba(107, 110, 111, 0.6)",
highlightFill: "rgba(107, 110, 111, 0.6)",
highlightStroke: "rgba(151,137,200,1)",
data: ticket_count
},
{
label: "Subsidy Count",
fillColor: "rgba(8, 126, 210,0.5)",
strokeColor: "rgba(8, 126, 210,0.8)",
highlightFill: "rgba(220,220,220,0.75)",
highlightStroke: "rgba(220,220,220,1)",
data: subsidy_count
}
]
}
var bar = new Chart(canvas.getContext('2d')).Bar(data, {
tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>kb",
animation: true,
});
//
var legendHolder = document.createElement('div');
legendHolder.innerHTML = bar.generateLegend();
document.getElementById('legend').appendChild(legendHolder.firstChild);
});
When I click the btnPrint_ Button I want to export my chart as PDF
like this
function Print1() {
var title = $("#title").text();
var doc = new jsPDF('l', 'mm',[210, 297]);
html2canvas($("#myChart"), {
onrendered: function(canvas) {
var imgData = canvas.toDataURL('image/png',1.0);
doc.text(130,15,title+" GT Log");
doc.addImage(imgData, 'PNG',20,30,0,130);
doc.addHTML(canvas);
doc.save(title+'gt_log.pdf');
}
});
}
The problem is that my chart is totally blurry in the pdf file.
Any idea how to fix this?
it's the first time that I'm using ChartJS and jsPDF so probably I'm doing something wrong.
Thanks!
The resolution comes from the Canvas size. The more you increase your Canvas (width and height), the better will be the resolution when downloading your PDF.
However, you probably don't want to increase the canvas size too much, so, one trick you could use is to create a hidden Canvas, with a higher width and height, use it to print the chart and create the PDF, getting a better PDF quality.
Here is a fiddle demonstrating this, with an option to download a PDF created from the original canvas/chart, and another option to download a new PDF from the hidden canvas/chart. You can see how the quality increase quite a bit when comparing both results.
https://jsfiddle.net/crabbly/kL68ey5z/
I don't think this is the best solution, however, it is the only way I could come up to increase the quality of my PDF chart files. I'm currently playing around both libraries, specially how jsPDF treats the w and h arguments when creating the docs.
Also, Chart.js does come with a built in function to extract an image form the chart (.toBase64Image()), however, the quality seems to be worse when I tested.
Since a few versions Chart.js has the parameter devicePixelRatio.
By default, the canvas is rendered in the DPI number by monitor, so 96 or Retina - not ideal for a printout, but perfect for the screen.
If you increase this value, more pixels are created. Expand the value so that you can export the chart in print quality as a Base64 image. The value does not affect the display of the chart on the monitor.
In my case, I set the value to 1.5.
options:{
devicePixelRatio: 1.5
}
Documentation: https://www.chartjs.org/docs/3.0.2/configuration/device-pixel-ratio.html
Works wonderfully ...
I've been working on a project trying to produce graphs with chartjs and then printing them using Chrome's print to PDF functionality, and I found that the chartjs graphs look poor. After reading various threads both on stackoverflow and github I developed one solution that worked well enough for me.
In my particular case I need the graphs at a fixed size and I can't have them be responsive because I need them to fit within the printed page correctly. I use style tags to set the size:
<canvas style="width: 300px; height: 300px" />
I've found that if you set responsive: false in the chart and then use the style tags like that, Chartjs won't mess with the size of the chart. Using any other method like setting width or height (not the style width or height) or using css classes will not set it properly. Chartjs only seems to work when I set the element's inline style tag for this.
Anyway, the trick that worked for me in getting better PDF output was to have Chartjs render a larger chart and then scaling it down to a smaller size so it fits on my page correctly.
Let's say for some reason we want a 300x300 pixel chart and that it looks poor when we print it to PDF. We need to have Chartjs draw this chart into a larger chart and then resize it down to 300x300. In my own project I am having Chartjs draw it 2x as large. So for this example I would make a canvas element that is 600x600 as follows:
<canvas style="width: 600px; height: 600px;" class="graph" />
At the same time I have a "graph" css class with height and width set to 300px. The chart will not render at 300px because of the inline style however.
You can then make the chart as you normally would, but immediately after the line of code that makes the chart, you remove the inline style tag from the chart. I found that when you do this, chartjs will draw the chart to the larger
600x600 size but then the chart instantly gets resized to 300x300. Here is an example of what the code looks like:
var ctx = canvas.getContext('2d'); var mychart = new Chart( ctx ,{ ....
}); canvas.removeAttribute("style");
The canvas.removeAttribute removes the inline style tag, so then the css class
takes effect and instantly causes the canvas to re-render at the smaller size. There is no flash or any indication that this has happened, yet I've found that you get a much higher quality looking chart.
There is one other issue with this. You will have to design your chart for the larger 600x600 size for example in order to get it to look right. When you draw the chart at a larger size, the lines and fonts don't get resized so everything looks really tiny. I had to set my chart manually to the larger size to design it and figure out good fonts and line sizes for the graph first, and then do the resize trick here.
I have also found that simply using the smaller sized chart and making thicker lines or larger fonts does not seem to have the same effect as sizing everything up first, and then rendering it as a smaller size.
I got a problem with my website.
On the left I have a sidebar, and next to it I have the container.
At the moment I have found this javascript function:
$(document).ready(function(){
$("#sidebar").height( $(document).height() );
});
This script makes sure that my sidebar is 100%. Also if I resize the screen, the sidebar automatically changes height.
The problem is that I have a dashboard in my container with moving divs, who can change size and are stackable underneath each other. (example: http://demo.webdeveloperplus.com/drag-drop-panels/)
If I stack these divs underneath each other, the sidebar does not change height automatically. How can I make sure that the sidebar is also changing height when I stack these divs in the container? Do I need to loop the script?
Hope someone can help me with this.
(ps. I do not have a footer in my website so the sidebar has to keep on the height of the document. (background))
Ok, this is a two part answer. Part one is that you will need to get the height of the viewport for the browser. Part two is that you will need to re-do this function whenever the window resizes. after some testing (in IE 9, Chrome and FF) I've found this to work well:
function getClientHeight() {
var retval = 0;
if (typeof (window.innerHeight) == 'number') {
retval = window.innerHeight;
} else if (document.documentElement && document.documentElement.clientHeight) {
retval = document.documentElement.clientHeight;
} else if (document.body && document.body.clientHeight) {
retval = document.body.clientHeight;
}
return retval;
}
$(document).ready(function () {
$(window).resize(function (event) {
$("#sidebar").height(getClientHeight());
});
$("#sidebar").height(getClientHeight());
});
I Fixed the problem now. I used another way to set the height of the sidebar always 100%.
For people who want to know how I fixed this:
I gave the #sidebar style: position: fixed; and putted the divs inside the sidebar outside of the div and made a new div #sidebarcontent. Then gave the #sidebarcontent style position: absolute; and placed them on the right place. I tested this for cross browser and it worked even on IE6.