I want to change font and color of a specific cell in a ListGrid.
I succeeded to change the color of the entire row with the following lines, but not of a single row:
for (ListGrid table : tables)
{
ListGridField[] columns = table.getFields();
for (Record record : table.getRecords())
{
....
record.setAttribute("cssText",
"font-weight:bold; font-size:80%; color:#FF3300;");
I don't want to use getCellCSSText function, i tried the following but it didn't work:
ListGridField gridfield = table.getField(columns[1].getName());
gridfield.setAttribute("cssText",
"font-weight:bold; font-size:80%; color:#FF3300;");
table.refreshFields();
I'm sure there is a better way to do it. But this is how i did it:
I added a hidden column to the table, that contain the color.
In getCellCSSText i read the color and the column name and set the color.
Is there a way to add an invisible parameter to a ListGridRecord? So that i won't add an entire column.
Related
Using the answer provided by aka863 here: How to split merged Excel cells with Python?
I can unmerge, fill values and copy the styling. My questions is how to make the value assigning/filling process configurable.
I want the user to be able to choose whether the values will be filled vertically/horizontally.
I have tried changing the last loop where we assign the top_left_cell_values to unmerged cells. However I couldn't find a way to make it horizontal/vertical configurable. (I'm planning to use radio buttons and tkinter for this)
Its certainly possible to have the code de-merge cells and fill cells in whichever direction, vertically or horizontally regardless of which way the merge was originally. Or not fill at all, so only the top left cell retains the 'value' of the previously merged cells, which is default on unmerge.
Changing the direction of the fill requires some change and re-calculation on the max row and column values in the iter_rows loop, but is simple enough.
However it seems in your last comment you just want to give the user the option to fill or not fill on horizontal merges. In that case you just need to ask the question, and then run the iter_rows loop only if the response is yes.
The code sample below is based on the answer referenced question.
I'm assuming only single line horizontal merges since you dont mention what if anything should be done with vertical merges in the comment.
The code does initially check and indicate the merge direction either vertically or horizontally so it can be included take some action if a merge is vertical.
On code run after displaying the range and direction of the merge, the question is asked to fill, yes or no. If yes the cells are de-merged and all cells filled with the top left cell value using the iter_rows loop. If answer no then the cells are just de-merged.
from openpyxl import load_workbook
from openpyxl.utils.cell import range_boundaries
wb = load_workbook(filename='foo.xlsx')
st = wb['Sheet1']
mcr_coord_list = [mcr.coord for mcr in st.merged_cells.ranges]
direction_dict = {'v': 'vertical', 'h': 'horizontal'}
for mcr in mcr_coord_list:
print('---------------------------------------------------\n')
merge_direction = ''
min_col, min_row, max_col, max_row = range_boundaries(mcr)
top_left_cell_value = st.cell(row=min_row, column=min_col).value
if min_col == max_col:
merge_direction = 'v'
elif min_row == max_row:
merge_direction = 'h'
print(f"The cell range {mcr} is merged {direction_dict[merge_direction]}ly with the data '{top_left_cell_value}'")
while True:
demerge_fill = input('Do you want the de-merge to fill all cells(y|n)? ')
if demerge_fill.lower() in ["y", "n"]:
break
else:
print('Invalid response')
st.unmerge_cells(mcr)
if demerge_fill == 'y':
for row in st.iter_rows(min_col=min_col, min_row=min_row, max_col=max_col, max_row=max_row):
for cell in row:
cell.value = top_left_cell_value
else:
print(f"Only the top left cell {mcr.split(':')[0]} will contain the data!")
wb.save('merged_tmp.xlsx')
Initially, all rows will have the same height of 50. When a cell is focused,if it has more content and requires more height, I need to increase the height of that particular cell. If that is not possible, atleast that entire particular row's height has to be increased. The remaining rows should not get effected.
I would make use of rowSelection api particularly the selected property of each rowNode.
You can define getRowHeight in html [getRowHeight]="getRowHeight"
and (selectionChanged)="onSelectionChanged($event)"
And define getRowHeight like this -
this.getRowHeight = function(params) {
return params.node.selected ? 100 : 50; // if selected height is 100 else default 50
}
and then in your onSelectionChanged,
onSelectionChanged() {
this.gridApi.resetRowHeights();
}
The reason you would want to piggyback on selected attribute is because it is maintained by ag-grid for each row.
You could do something similar by implementing the callback onCellFocused but then you will have to maintain a similar attribute for each row because you also need to adjust the height once the focused row is out of focus which might be an expensive operation.
All my searches turned up for sizeColumnsToFit and autoSizeColumns which is not what I want.
My grids have many columns, so it scroll horizontal which is fine
But I cannot know in advance what would be the most space needed for the widest text in a column, so want the grid to auto size all columns to accommodate for whatever is the longest line of text in the cell.
Can one do that? (pretty much like have nowrap on a html table column, not that ag-grid wrap text, it just hide what is too long)
Grid Resizing:
https://www.ag-grid.com/javascript-grid-resizing/
sizeColumnsToFit - this tries to squeeze all the columns in the view - no horizontal scrolling
autoSizeAllColumns - this tries to size all columns to to fit the data - horizontal scrolling
// If you need to resize specific columns
var allColIds = params.columnApi.getAllColumns()
.map(column => column.colId);
params.columnApi.autoSizeColumns(allColIds);
// If you want to resize all columns
params.columnApi.autoSizeAllColumns();
I passed through this and it took me some time to make it work the way I wanted to, by that I mean :
Use all the available space
Make each column take the width required to display its content correctly
Solution :
Add the width parameter for each column (requires some manual tuning to set the right values)
Call gridApi.sizeColumnsToFit() in the onGridReady which will resize to take the available space while making sure that columns having bigger width will take more space
const gridOptions = {
...
columnDefs: [
{
...,
width: 100
},
{
...,
width: 50
},
...
],
...
onGridReady: (event) => event.api.sizeColumnsToFit();
};
Simply use flex instead of width in the column definitions. The grid will adjust automatically.
You can find a complete example for auto resizing all column.
column-sizing
Simply call autoSizeColumns() function, all columns will be resized according to content.
gridColumnApi.autoSizeColumns(allColumnIds, skipHeader);
I would like to change text color of my Label in case its text value is a negative number (or starts with a '-'). Is there a proper binding to make it works?
No, you need to create it yourself, e.g.
Label label = ...
IntegerExpression value = ...
label.textProperty().bind(value.asString());
label.textFillProperty().bind(Bindings.when(value.lessThan(0))
.then(Color.RED)
.otherwise(Color.BLACK));
If you've don't have a expression that allows you to create a condition in this way you could of course also create a binding that depends on the Label's text property:
Label label = ...
label.textFillProperty().bind(Bindings.createObjectBinding(() -> label.getText().startsWith("-")
? Color.RED
: Color.BLACK,
label.textProperty()));
I have this piece of code:::
XSSFWorkbook workbook1=new XSSFWorkbook(inputStream);
XSSFSheet sheet = workbook1.getSheetAt(1);
sheet.addMergedRegion(new CellRangeAddress(28,28,5,9));
Now , i have few straight Question.
a) how to Set border for the merged region.
b) how to set Color inside the merged region
c) how to Put some value inside this merged region.
NB::
All needs to be in xssf.
You can work with merged cells as one cell. After merging row 28, column 5 to 9 all of them will be one cell which is row 28, column 5. You can do all of your usual cell editing on this cell.
XSSFRow row = sheet.createRow(28);
XSSFCell cell = row.createCell(5);
...