I'm looking for the equivalent of a html inline-block in swiftui. I basically want it to work exactly like list - but just wrap if it's going to exceed the line - eg
WrappingList( items ) {
Text( "item.name")
}
but I'm finding it way harder than I thought. I really want the things list brings to the table - ie incremental updates and scrolling, but I can't find a way of mapping it into the swift declarative style. In languages where you added controls procedurally, it's trivial:
current_x = 0
current_y = 0
foreach (var item in items )
{
control = create_control_for( item )
biggest_y = max( current_y + control.height, biggest_y)
if (control.width + current_x > width)
{
current_x=0;
current_y = biggest_y;
}
control.position = (current_x, current_y)
}
but swift seems to want to do things in hstacks or vstacks and I don't really know how do that and still keep the properties of a list - particularly without knowing the size of things in advance - ie I don't want a fixed grid.
Does such functionality already exist? If not, is there a way of mapping the above code line into SwiftUI?
just so there's an answer here - the comment above from asperi worked great - linking to this stack overflow article
Related
I'm making a sort of an Excel-type application in which I can load a tab-delimited text file and I am able to edit cells... etc
It's useable but I have an issue related to me allowing the user to "freeze" a number of columns/rows. ("Frozen" rows/columns can only be one of the first ones and are then "frozen", i.e. always displayed even when scrolling)
The whole frozen Col/Row is working but I would like the user to be able to scroll slightly past the last Col/Row in order to be able to only ever display full cells.
Right now when reaching the end of the scrollbar I end up with a partial leftmost column and topmost row because it's only displaying up to the last full col/row and not going a wee bit further for all content to be displayed fully.
I've tried doing adding some space to the maximum scrollbar value once everything is loaded in the table but it seems to have no effect :
table->horizontalScrollBar()->setMaximum(table->horizontalScrollBar()->maximum() + t->horizontalScrollBar()->singleStep()*2);
I tried multiple values too.
(Edit) There may be some Qt code that "snaps" the QTableView viewport back to the edge of the last cell automatically...
(Edit2) I connected verticalScrollbar's rangeChanged() signal to a custom slot with the following code:
void MyTableView::onRangeChanged(int min, int max) {
QScrollBar *sender = verticalScrollBar();
int newVMax = max + 20;
sender->blockSignals(true);
sender->setRange(min, newVMax);
sender->blockSignals(false);
}
Sadly there is definitely a snapback mechanic when scrolling to the end of verticalScrollbar...
Gif of snap back issue
(Edit3) The snap back may be related to:
void QHeaderViewPrivate::setScrollOffset(const QScrollBar *scrollBar, QAbstractItemView::ScrollMode scrollMode)
{
Q_Q(QHeaderView);
if (scrollMode == QAbstractItemView::ScrollPerItem) {
if (scrollBar->maximum() > 0 && scrollBar->value() == scrollBar->maximum())
q->setOffsetToLastSection();
else
q->setOffsetToSectionPosition(scrollBar->value());
} else {
q->setOffset(scrollBar->value());
}
}
mainly:
if (scrollBar->maximum() > 0 && scrollBar->value() == scrollBar->maximum())
q->setOffsetToLastSection();
I'm attempting to build a PowerShell CmdLet that can parse and cleanly reformat a chunk of XAML or any other markup language.
So far, I've had to build an assortment of CmdLet's so that I can get the correct information to put into this thing (for indentation, counts, items, child items, etc, so forth...)
What I'm attempting to do is to collect ALL of the properties and values in a set of XAML/HTML, etc, and then once I have the lengths of all those variables, I can then start to chunk them out and properly format them so that they all output down a straight line. It may not make a super amount of sense as I describe it? So, here's an example.
<Window xmlns = 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x = 'http://schemas.microsoft.com/winfx/2006/xaml'
Title = 'Window Title'
Height = '600'
MinHeight = '600'
Width = '800'
MinWidth = '800'
BorderBrush = 'Black'
ResizeMode = 'CanResize'
HorizontalAlignment = 'Center'
WindowStartupLocation = 'CenterScreen'>
The reason I am attempting to build this, is so that I can programmatically save the instructions to a smaller footprint. So, instead of... having fluctuating numbers for each line and item and the end result looking like this...
<Window xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x = 'http://schemas.microsoft.com/winfx/2006/xaml' Title = 'Window Title' Height = '600'
MinHeight = '600' Width = '800' MinWidth = '800' BorderBrush = 'Black' ResizeMode = 'CanResize'
HorizontalAlignment = 'Center' WindowStartupLocation = 'CenterScreen'>
...I then have a set of instructions that can vectorize the content of the XAML, so that it has a pattern and less randomness. Sure, the line count might get expanded quite a bit, but there's no need to be concerned with that if all it is doing is expanding into RAM. Which is the point of it...
At any rate, the code that I am having trouble with is essentially a way to preserve the spacing between the quoted objects. I feel like I'm beating my head against a wall trying to get this to work correctly when I know it's a matter of Regex ...
I've posted the code I'm talking about via this link.
https://github.com/secure-digits-plus-llc/FightingEntropy/blob/master/Format-XAML.ps1
Lines 43-147
It is a script block, and testing with it requires a Xaml Here String.
Any suggestions would be appreciated. I'm not much of a Regex fan, I understand some basics to it but I'm not that great with it yet.
-MC
Found the answer I was looking for.
Not the most eloquent way to solve the issue I was having, but it works.
"(?<=\').+?(?=\')"
When the lines are split, and you want to preserve the spacing within the quotes, then you need something like this.
I was attempting to iterate through a do loop until the array/string contained (2) single quotes, but what was happening was... 'oh. I thought you wanted to match 'adbhjikvgrfe' with '21345rfs'.
No regex. Wasn't looking to match that. sigh.
Then it was taking the spacing out between the quotes.
sigh
I gotta say... anyone who truly writes good programming...? Well, I tip my hat off to you good sir/ma'am... because... it's a frustrating job. For certain.
I've been trying to graph only for the past few hours. I only want to graph the TRUE arguments of this ifelse statement
which(RawGame1$event_desc == "Off Rebound")
reb <- ifelse(RawGame1$event_desc_id == "O",1,"")
Right now whenever I try to plot with ggplot, I get a bar graph where 13/22 bars are the 3rd argument(pointless data) that skews the scales and dimensions horribly. How do i delete them? Am i trying to graph it wrong?
ggplot(RawGame1[,], aes(x = pid.first.char, fill = reb)) +
geom_bar() +
ggtitle("Off Reb by Player") +
xlab("Player") +
ylab("Total Rebounds")
There has to be a simpler way i don't know about!?!? New to R and appreciate any help. Be gentle.
It would be much easier to answer if you provided a sample of your data (at least what head(RawGame1) prints out), also what the plot looks like now and what's the goal.
But I see that you have brackets without any filtering condition in RawGame1[,] - if you intended to select only event_desc_id=="0" there, just write RawGame1[RawGame1$event_desc_id==0,].
I have a list of products and I am trying to alternate the colour between each product (grey, white, grey, white, and so on). I understand how to use colour formatting based on a condition such as the following link: example followed. However I dont know how to get it to look at the previous line on the report and check whether it holds the same product name. If it does, then colour the row the same colour, else the alternate colour.
I've setup an example report in the application: Application 67666 - Colour Row by Product example. I have two products in the report so I'm trying to get 3 grey lines and then 3 white lines, if I had more products it would then go back to grey and so on.
Link:apex.oracle.com
workspace: apps2
user: user
password: DynamicAction2
Please could I be directed in the right direction, JavaScript and Dynamic Actions shout out to me as in the example link however its looking at the previous row which is getting me all stuck.
I can't think of another solution than javascript really. There is possibly using lag in the sql, but only to use it to determine where the row color should change. You could use the value of the column in a html expression of a column and put it in a class, but you still need to iterate over it with javascript anyway. So it seems less fiddly to just use javascript.
Inline CSS:
table.report-standard tr.normalRow td{
background-color: green;
}
table.report-standard tr.altRow td{
background-color: red;
}
This will override the default style, but you will need to tune this to your demands. For example, the color change on :hover of the row. I prefer steering the style through assigning classes and then define the rules in css than to directly assign css through javascript (which would place it in style tags, ugh).
Dynamic action: change row colour
After Refresh, Region, Product Report
True action: execute javascript code, fire on page load checked
$('td[headers="PRODUCT"]', this.triggeringElement).each(function(){
var lCurrRow = $(this).closest('tr'),
lPrevRow = lCurrRow.prev(),
lPrevVal = lPrevRow.find('td[headers="PRODUCT"]').text();
console.log(lPrevVal + ' - ' + $(this).text());
//if value on previous row differs from the that on the current row
//then change the class
//if the value didnt change, then use the same class as the previous row
if ( lPrevVal != $(this).text() ){
if ( lPrevRow.hasClass('normalRow') ){
lCurrRow.addClass('altRow');
} else {
lCurrRow.addClass('normalRow');
};
} else {
if ( lPrevRow.hasClass('normalRow') ){
lCurrRow.addClass('normalRow');
} else {
lCurrRow.addClass('altRow');
};
};
})
Check your solution on apex.oracle.com, I implemented it there.
I have a list within my application, but was wondering if it is possible to have each list displayed show a different background colour, rather than the same one through out each item?
I have created a template but would be nice to have the background of each change colour.
Thanks
EDIT: I have also created the same list via a 'Ext.dataview.component.DataItem' / 'DataView' so if this is easier to control separately then great, as I am looking at interfering in te process of creating each and setting its background, if that is at all possible.
You could try to do that with simply XTemplate:
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Company: {[values.company.toUpperCase() + ", " + values.title]}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<div class="{[xindex % 2 === 0 ? "even" : "odd"]}">',
'{name}',
'</div>',
'</tpl></p>'
);
take a look at their explanations, might find something interesting:
http://docs.sencha.com/touch/2-0/#!/api/Ext.XTemplate
I have seen many variants on the Ext.query('class').up().addCls('backgroundClass'); hack, which makes perfect sense to me, but my question is WHEN are people calling this? I can't put it in 'painted', since DOM doesn't seem to exist yet.. where/when are you guys executing the Ext.get(..) call?
I have been looking for this also, and I had a hard time finding out how to access the individual items of a xlist...
This is the way I finally did it:
in your itemTpl, add a class to your < div >, using the property 'id' of your model:
itemTpl:'< div class="my_list_item_{id}"> ... content ... < /div>'
the tricky part is that if you want to set the background color of the whole item area, you have to access to < div > with class 'x-item-label' that is wrapping your itemTpl < div >.
Here is how I did it (for the first item as an example):
Ext.select('.my_list_item_1').first().up('div.x-list-item-label').addCls('background_item');
where 'background_item' is a CSS style, defining your background color.
(Since there is no way (at least that I know of) to get the index count of your items in the 'itemTpl' config, I had to use to automatic 'id' property of my model/store.
Note that if you apply filtering/sorting/... on your store, this property will not be sorted anymore. So if you want to link the order displayed in your list to the 'id' property, you have to do something like 'Ext.StoreManager.get('MyStore').getAt(indexInList).get('id') )
Hope this helps...
Since Sencha Touch 2.2.1 it's also possible to use striped parameter (more info here). It will add x-list-item-odd class to odd items of your list.