I have a default layout with a header, footer, left and right margin and a content area - all rectangles with fixed sizes and positions.
Depending on the program, the content area is dynamic divided into any number of subareas (column layout with rectangles). These subareas are to be visually separated. The separator should go beyond the content area.
How can I give the separator the outer left (x) position from rectangle 2 as start position? With x: 0 it doesn't work, x :0 will be the left (x) position of the content and not the hole screen.
I have already tried with a negative x value for the separator but it remains in the content area
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I'm new to Flexbox, Exponent, and React Native, so I'm not certain if I'm doing this correctly. Any help you can provide would be appreciated and I've provided a snack below that could be used as a starting point.
My screen has a header that's 40px tall at the top and a tab bar that's 40px tall on the bottom.
Between them, I'd like to have a full-width, full-height column that has rows of content with charts on the left, and a header (Billing, Budget, Labor) to the right of the chart with variable number of rows of data beneath the header. These rows have a key that's left-aligned (Invoiced, Not Invoiced, Total, etc.) and a value that's right-aligned (500.00, 250.00, 750.00, etc.).
Because the number of rows of data vary (3, 4, 3, etc.), I don't want to hard-code the heights of each chart row. I also don't want these rows to stretch/grow to the height of the center column, but allow for whitespace beneath them).
How can I build this so that:
1. Rows don't fill the height of the center column, but align on the top and leave whitespace below.
2. Charts are left-aligned next to their data.
3. Data figures/values (e.g., 500.00) are right aligned next to their keys (e.g., Invoiced).
Any help would be amazing. If you could provide a snack.expo.io, that'd be even better! Here's a rough example of what I mean, but you can see that the rows are stretching to the height (so there's a lot of wasted space and no empty space at the bottom) and the key/values in the data aren't justified so the key is on the left and the value is right-aligned.
https://snack.expo.io/HknEsZ5uz
I updated a few lines, does this look better? https://snack.expo.io/S1cF5bsdG
flex: 1 allows a view to fill all space available, so if you have two views on the same level of a hierarchy with flex: 1, both views split all vertical space equally. Read more: https://facebook.github.io/react-native/docs/layout-props.html#flex
I have a tableview cell that contains a horizontal UIStackView. Inside it is an UIImageView (on the left, 100x100 dimensions) and a vertical UIStackView (on the right) that contains 4 labels. The vertical UIStackView is constrained to the UIImageView's top and bottom anchors. But the bottom constraint is "less than or equal to".
I am setting the text property on these labels but if the text is nil I hide that label. Stack View than sets the height of that label to 0 and it doesn't appear in the Stack View. Now the idea is if some labels are hidden, the combined intrinsic content size's of the remaining labels will define the height of the vertical UIStackView and it will decrease in height based on that "less than or equal to" bottom constraint.
This doesn't work though. Take the case where the 2nd and 4th labels have been hidden. The 1st label is normal height. But the 3rd label stretches all the way down to the bottom of the UIImageView. This is in contrast to my expectation that the intrinsic content sizes of the labels would be less and the label's UIStackView would shrink.
I'm guessing there is some priorities that might need to be tuned to get this working properly. This whole view hierarchy is contained in a UITableViewCell and that has dynamic height applied which I hope doesn't cause any problems.
So if the intended behavior is that when I hide labels the vertical UIStackView shrinks, what constraints must I add/delete or which priorities must be set?
I have a GridPane displaying descriptive Labels on the left side and content Labels on the right side. I set everything to USE_COMPUTED_SIZE in SceneBuilder and added padding to my elements so they don't stick together too closely. This works well if it wasn't for the fact, that the left-side Labels are cut off, if the content is big enough to take up the whole width of the scene:
Is there a way of making sure that my left-side labels are displayed in full, before the right side labels get their share of available width? Setting the minimum width of the first column to a concrete value works, but i would like JavaFX to determine the needed size for the first column.
Use Texts (can be found in Shapes) instead of Labels in the first column. In contrast to Labels Texts are not resizeable and GridPane cannot resize the first column to become smaller than the largest of the Text nodes in this column.
I am working on a FLEX / AIR Spark list which lists a collection of images with differing width and height.
I am using a custom layout which works this way:
decide how many images can be fit in the current row based on their widths.
justify them in such a way that first image in the row obeys the "left" margin and the last image in the row obeys "right" margin, so with the "top" and "bottom" as specified by the user, let us say 10 pixels.
As an example, assuming that the current row has 4 images, the images 1 & 4 will have 10 pixels each as "left" margin "right" margin respectively. But the left and right gaps between 1-2, 2-3 & 3-4 will be equally divided based on the varying widths.
now i would like to draw a background that will fill the dynamic area. Please see the image below to get an idea:
Layout requirement Image
** In the image, The grey area is the background I would like to draw, and the colored rectangles represent images of differing widths and heights.**
the "rowHeight" is variable based on the maximum height of individual images within the row.
Issues:
a) Now I would like to draw a background (see the grey area in the pic) that fills the background area of the list. I know the current item's width & height, but I don't know the rowHeight decided by the layout, left and right margins between the images.
Something like:
bgRect:Rectangle = new rectangle ( 0, 0, (imgWidth + (LeftMargin/2) + (Right Margin/2) ), rowHeight)
b) How / where should the background be implemented? if i add the BG area within the item renderer based on the layout, again the layout will be relaid.
Children should be added in the createChildren method. Drawing (painting) the background should happen in updateDisplayList method.
You can pass data to your itemrenderers via an itemrenderer factory. See - Flex - Sending a parameter to a custom ItemRenderer?.
var productRenderer:ClassFactory = new ClassFactory(ProductRenderer);
productRenderer.properties = { showProductImage: true };
myList.itemRenderer = productRenderer;
I had a layout all nicely designed in Qt, but as soon as I clicked on the parent window and set it to a grid layout, things got all wonky. I've read every tutorial I can find as well as the Qt designer manual and just cannot figure out why this is happening. I have attached a screenshot to show the problem:
As you can see, the vertical layout on the left insists on being wider than the children it contains. Both the label and the treeview are set to sizePolicy maximum, and the maximum width is set to 260px. The children themselves stay the correct size, but the vertical layout that contains them doesn't.
The vertical layout in the middle is set to expanding, and the one on the far right is setup the same as the one on the left, only that one appears to work. How do I make the first vertical layout conform to it's children's width?
Also, if I may sneak a second question in, I have a QTextEdit inside the tab widget in the lower right, but it will not fill to take up the space of the full tab view. You can't see that in the screenshot, but if I pull the tabview up, the textedit within it doesn't stretch with it. How do I make it conform to the size of the tab? It's already set to sizePolicy expanding, but that doesn't seem to help.
The problem is most likely that you need to experiment with "stretching" the layout. Stretch sets the size of layout cells in relation to each other. The default is 0, which means no stretching occurs.
In your case, I believe you want to set the stretch of the first column (column 0) to 0, and the stretch of the second and third columns to 1. This means that the first column will always be as small as possible, and the second and third columns will try to be equally wide.
You can set the stretch programmatically quite easily; for example, to set the first column to stretch 0:
layout->setColumnStretch(0, 0);
In Qt Designer you can access column and row stretches as any normal properties.