I have a project where one of it's windows is a ScrollPane that has a GridPane as a content. when I click on a new node, or I start typing on the text fields. the width of a GridPane's column increases unintentionally. can anyone explain why would that be happening.
I tried to get rid of ScrollPane on the window but it's still going on. My window's width is bind to the window's width also.
Thank you so much for your support on this problem. Turns out the issue was something completely unrelated to anything I wrote down. The problem was on a TableView I set to increase its columns' width based on the content.
ingredientTable = new TableView<Ingredient>();
ingAmount = new TableColumn<Ingredient, Integer>("amount");
ingUnit = new TableColumn<Ingredient, String>("unit");
ingName = new TableColumn<Ingredient, String>("item");
ingredientTable.getColumns().addAll(ingAmount, ingUnit, ingName);
ingAmount.prefWidthProperty().bind(ingredientTable.widthProperty().multiply(0.1));
ingUnit.prefWidthProperty().bind(ingredientTable.widthProperty().multiply(0.2));
ingName.prefWidthProperty().bind(ingredientTable.widthProperty().multiply(0.70));
For some reason, whenever I changed content anywhere (clicked on a new node or type on TextField) the tableview would increase it's width. I just reduced the multiply parameter of one of the TableColumn to 0.01 and that seemed to solve the problem.
I'm sorry for my lack of information and expect more details in future posts
Related
https://imgur.com/X2gEMqO
Check out the video to see what I'm talking about ⤴
Before I start making custom widgets I wanted to see if anyone knew a way to fix this with vanilla Flutter. It seems to be something related to the TextEditingController but I'm not entirely sure.
When the TextField is set to centre or right align it seems to work just fine, but when on left / start / justify it always seems to have that slight jitter.
Thanks in advance! ~ I may post this to the Github repository as well
Edit: You can see that the cursor jitters only when it moves to the left of the textfield. When it is moving within the string it does not jitter at all. I was testing this on a simulated iPhone 11
This problem has two parts to it. First, the cursorOffset of the text_field.dart for whatever reason has a negative x value.
This causes the cursor to be jammed into it's container making the width look weird. Second, the TextStyle.height property causes the cursor to jump.
I figured out how to fix this thanks to Pavel!
TextField - Font Size 50.0 / Height 1.30
https://imgur.com/gallery/G9bkcIf
TextField - Font Size 20.0 / Height 1.30
https://imgur.com/gallery/x7a5nzM
Fix Cursor Offset
The cursorOffset value is stored within the text_field.dart file. In
order to edit it, you should probably create a duplicate of the
text_field.dart file to customize. Here's how to do that,
although you might find better answers with a Google
Once you have the file ready to edit navigate to cursorOffset
within TargetPlatform.iOS. It should be around line 924-ish if
your file is unmodified.
Change the values of Offset(...) to 0 & 0 (x, y) respectively or
whatever you think is appropriate.
If you duplicated the text_field.dart file correctly then it should
be working right away!
Fix Cursor Jump
This fix is a lot less work. Simply add in a TextStyle widget to the
style: property of a TextField widget.
Then, just fill in the height property of your TextStyle widget
with whatever you think! I found 1.3 was a good median but pick the
best height for your fontSize. Here's some information on
height:
Github Issue Regarding This
https://github.com/flutter/flutter/issues/31661
I think this is more of a general issue. I would like to use a textfield that gets dynamic data and doesn't stretch more than a given max height. For instance, I have a textfield that, if it gets text that fits in one line, the textfield will be one line height, and i have other elements under it, that will move up with float positioning. Or, if I want a 3 line max height and if the text exceeds that space, then the rest will be trimmed.
I don't want to use java expressions to trim that text, as it is not always accurate. I am new to jasper and I am trying to know if there is any way to do this. I did a lot of searches, but maybe there is something that i missed, and i hope someone can help me. Thank you
I managed to solve this by extending net.sf.jasperreports.engine.fill.TextMeasurer and overriding initialize() method; also I had to extend net.sf.jasperreports.engine.util.AbstractTextMeasurerFactory and override the createMeasurer() method.
Now, whenever I want to have max # of lines, with no overflow, I add a property to that text field (e.g. maxLines) which is being passed to my custom TextMeasurerFactory. I hope this helped you.
We had a similar problem at work with JASPER Reports 4.5, where we had an invoice with a header and a table. We wanted the header to have dynamic height based on the lengths of certain fields (like address, partner name, etc,), but not more than a critical limit, otherwise the header will push the table and thus making a mess by splitting it across multiple pages. Also, the invoice shouldn't exceed 1 page.
We eventually had to move the header in the background section, where we also put a background for the table consisting of vertical lines (so it will extend to the end of an A4 page) and a white opaque square.
This way, if the header exceeds the max height it will go underneath the table's background, cropping the text. This was the desired effect we were looking for.
Sounds crazy, but it worked ...
I'm using setScrollMode(ScrollMode.AUTOY) to enable vertical scrolling when necessary on a VerticalLayoutContainer. However, the scrollbar overlaps the content of the container. The only way around this that I've seen is to call setAdjustForScroll(true). The problem with this is that The panel will then always reserve space for a scrollbar even when one is not present.
Is there a way to tell GXT to only adjust for a scrollbar when one is present? Or perhaps use an event handler (eg ResizeHandler) and check if the scrollbar is currently visible?
Instead of trying to check in a handler if the scrollbar is visible, isn't it just easier to not have the content in the VerticalLayoutContainer?
For example I have:
VerticalLayoutContainer vp = new VerticalLayoutContainer();
vp.setScrollMode(ScrollMode.AUTO);
vp.add(layer1, new VerticalLayoutData(1, -1));
vp.add(layer2, new VerticalLayoutData(1, -1));
vp.add(layer3, new VerticalLayoutData(1, -1));
the layers(1-3) contain the actual content and are different types Ex. VBoxLayoutContainer, Container, VerticalLayoutContainer.
It works for me. I don't think it is relevant but I am adding the vp to a CenterLayoutContainer that is added to the root panel.
I am using GWT 2.4's new DataGrid in a project. I configured the DataGrid with a pagesize of 50.
The available screen is not big enough to display all items and thus a vertical scrollbar is shown (this is actually the main purpose for using a DataGrid in the first place).
I attached a SingleSelectionModel to the DataGrid in order to be able to select items.
This works fine so far.
However I also have another widget with which the user can interact. Based on that user action a item from the DataGrid should be selected.
Sometimes the selected item is not in the visible screen region and the user has to scroll down in the DataGrid to see it.
Is there any way to automatically or manually scroll down, so that the selected item is visible?
I checked the JavaDocs of the DataGrid and found no appropriate method or function for doing that.
Don't know if this works, but you could try to get the row element for the selection and use the scrollIntoView Method.
Example Code:
dataGrid.getRowElement(INDEX_OF_SELECTED_ITEM).scrollIntoView();
The answer above works pretty well, though if the grid is wider than your window and has a horizontal scroll bar, it also scrolls all the way to the right which is pretty annoying. I was able to get it to scroll down and stay scrolled left by getting the first cell in the selected row and then having it scroll that into view.
dataGrid.getRowElement(dataGrid.getVisibleItems().indexOf(object)).getCells().getItem(0).scrollIntoView();
Don't have time to try it out, but DataGrid implements the interface HasRows, and HasRows has, among other things, a method called setVisibleRange. You just need to figure out the row number of the item that you want to focus on, and then set the visible range from that number n to n+50. That way the DataGrid will reset to put that item at the top (or near the top if it is in the last 50 elements of the list backing the DataGrid). Don't forget to redraw your DataGrid.
Have you already looked at this? If so, I'd be surprised that it didn't work.
Oh, and since this is one widget talking to another, you probably have some messaging set up and some message handlers so that when the user interacts with that second widget and "selects" the item, the message fires on the EventBus and a handler for that message fixes up the DataGrid along the lines I've described. I think you'll have to do this wiring yourself.
My solution, a little better:
dataGrid.getRow(model).scrollIntoView();
I got a Out of bounds exception doing the above.
I solved it getting the ScrollPanel in the DataGrid and used .scrollToTop() and so on on the ScrollPanel. However, to access the ScrollPanel in the DataGrid I had to use this comment:
http://code.google.com/p/google-web-toolkit/issues/detail?id=6865
As Kem pointed out, it's annoying the "scrollToRight" effect after the scrollIntoView. After me, Kem's solution gives a better behaviour than the base one as usually the first columns in a table are the more meaningful.
I improved a bit his approach, which scrolls horizontally to the first column of the row we want to be visible, by calculating the first visible column on the left before applying the scroll and then scrolling to it.
A final note: Columns absolute left is tested against "51". This is a value I found "experimentally" by looking the JS values in the browser's developer tool, I think it depends on the table's style, you may need to change/calculate it.
Below the code:
public void scrollIntoView(T next) {
int index = datagrid.getVisibleItems().indexOf(next);
NodeList<TableCellElement> cells = datagrid.getRowElement(index).getCells();
int firstVisibleIndex = -1;
for(int i=0; i<cells.getLength() && firstVisibleIndex<0;i++)
if(UIObject.isVisible(cells.getItem(i)) && (cells.getItem(i).getAbsoluteLeft() > 51) && (cells.getItem(i).getAbsoluteTop() > 0))
firstVisibleIndex = i;
cells.getItem(firstVisibleIndex>=0? firstVisibleIndex : 0).scrollIntoView();
}
I am using the ScrolledComposite for a existing control(with many children) based on the method2 mentioned here :http://www.placelab.org/toolkit/doc/javadoc/org/placelab/util/swt/SwtScrolledComposite.html
The only change is instead of creating a new shell & display I am using the existing control's parent.
I am seeing the scroll bars as expected but the existing control/content is displayed form the centre & not from the start. The first half(vertically split) of the layout is empty & the actual control/content gets displayed in the right-half.
I checked bounds, Origin, size etc. they seem to be fine.
screenshot putup here :http://img818.imageshack.us/i/contentstartsfrommiddle.jpg
Any clues
Thanks in advance
Did you delete the Composite c1? maybe that is in the left side.
You could also provide what is exactly your change to the code.