Is there any hack for v-aligning images in a cell
I am trying to create a dashboard,those traffic lights are images.
Since once of the columns is a text-wrap and the height of those rows
are dynamic, I have no way of knowing the row height to calculate the y_offset for those images
Does anyone have a recommendation on how I can handle this? Is there a way of getting the row_height after sheet.write and text_wrap format is applied?
Is there a way of getting the row_height after sheet.write and text_wrap format is applied?
Probably not without access to Windows APIs for calculating bounding boxes for strings.
You could probably make some working estimates based on the length of your string. Each new line in text wrap is equal to 15 character units or 20 pixels.
Since once of the columns is a text-wrap and the height of those rows are dynamic, I have no way of knowing the row height to calculate the y_offset for those images
This is the main problem. In order to specify the image position exactly you will need to specify explicit row heights so that XlsxWriter can calculate where the image will go based on the size of the cell. In order words you will have to avoid the automatic row height that Excel gives you when wrapping text.
Once the row height is fixed you can position images exactly where you want them using the 'x_offset' and 'y_offset' options.
Note, you can also use conditional formatting to create traffic lights based on cell values. See Sheet9/Example 9 of this code from the XlsxWriter docs and image below. These can be centered automatically even with with text wrapping.
I can't understand and find how the value of the tj operator is generated??
Here I paste result before and after changes in the display of the text (on the second block I changed the position Left-Justice and then again comeback to Centered)
I think pdf use some of prng, but what kind of, I can't find
HElp please
[(\003\024\027\005\003\030\036\b)-114.267(\003\006\007\024\036\b)-113.297(\026\002\024\003\032\020\b)-113.337(\b)-111.574(#\024\002\f\005\002\021\003\007\004\f\005\b)-117.089(\003\006\002\003\b)-114.08
[(\003\024\027\005\003\030\036\b)-114.366(\003\006\007\024\036\b)-113.297(\026\002\024\003\032\020\b)-113.327(\b)-111.693(#\024\002\f\005\002\021\003\007\004\f\005\b)-116.98(\003\006\002\003\b)-114.188
First of all, the PDF format does not explicitly support text justification. PDF does not even know text column definitions to justify text in!
All the PDF format supports is
setting or changing the text matrix (and text line matrix), scaling, character and word spacing explicitly and
drawing text pieces which implicitly changes the text matrix.
Thus, if a PDF processor changes the justification of a line of text, it actually first has to have determined
which text pieces belong together and form that line of text;
text pieces can be given as arguments of the Tj or TJ instructions (or more seldom the " or ' instructions); in simple cases the whole line is drawn using a single instruction but you cannot count on that in general; and
what the left and right borders of the text column are to justify between;
e.g. these borders might be standard values assumed by the processor for certain page formats or derived from the current clip path.
Having determined these data, the procedure differs for different kinds of justification:
left justification - position the text matrix at the left text column border at the height of the line and simple let the text drawing instructions follow;
right justification - calculate the width of the drawn line using the current font, position the text matrix at the right text column border minus that width at the height of the line, and let the text drawing instructions follow;
center justification - calculate the width of the drawn line using the current font, position the text matrix at the middle of the text column minus half that width at the height of the line, and let the text drawing instructions follow;
full justification - calculate the width of the drawn line using the current font, set the character spacing and word spacing (using the Tc and Tw instructions, probably with a tweak of the Tz horizontal scaling) to use up the difference between that width and the text column width, position the text matrix at the left text column border at the height of the line, and let the text drawing instructions follow;
or calculate the width of the drawn line using the current font, change the text drawing instructions to use up the difference between that width and the text column width (e.g. using the numeric TJ array argument values), position the text matrix at the left text column border at the height of the line, and let the changed text drawing instructions follow;
or even apply a combination of these methods.
(The changes applied when doing a full justification - character spacing, word spacing, changes of text drawing instructions - obviously additionally are undone when later again changing to another type of justification...)
Positioning the text matrix can happen using the Tm, Td, TD, and T* instructions.
By the way, the positioning and scaling of the text also is influenced by the current transformation matrix. Thus, cm instructions can also be used for justification. But this is less likely than the use of the instructions mentioned above...
Unfortunately you merely supplied an excerpt from the array argument of a TJ instruction before and after such a justification job. One sees that the numeric elements of that array change very slightly. Whether this actually is the justification itself (as per the second option of the full justification above) or merely some computational inaccuracy cannot be told without the context.
Problem :- Not able to apply justify formatting for paragraph in pdfbox.
I tried :- I included space in between words so that it justifies the paragraph. But this does not work for a variable width font. For that I not able to identify pixel position for each character since the width in pixels of each character is different.
Please give suggestions....
I want to make this type of alignment in pdfbox as given below :-
I have a table and its width is to fit the size of the window.
I've a couple of FormField and PlainTextContentControls used in this table.
But the FormField text input fields are small in width by default.
I want the size of these FormField text input fields to fit the size of this cell.
How can I achieve this?
If I am not wrong (And I could be wrong), the formfields have a predefined size and expand only when you fill the data in. There is no predefined setting which you can set to increase the width.
Alternative way to increase the width.
Increasing the font size of it but this will also increase the height of the formfield.
Fill the Default Text with spaces.
Is there a way to calculate the size of the justified text in Xcode.I am using a uitextview to show my text and I don't want the text to appear in more than 11 lines.There are methods like
sizewithfont I have used them but even after calculating the size and only populating the
uitextview with the specific amount of text when I apply NSTextAlignmentJustified more lines
are produced than actual ones !
Is there a way to calculate sizewithfont with justification ????