string_width and string_width_ext inverse function ?

[DaveInDev]

Hi there,

I know string_width and string_width _ext that are very handy, but I'm writing a texteditor,
and I wonder if some kind of "inverse" functions exists : I mean giving a x (relative to the left position of the draw_text)
and getting the position in the string ? Like a string_pos_x(s,x) ?
Because I want my user to click anywhere in teh edit field and find what is the corresponding position in the string...

I don't ask for an _ext version, it would be huge

Otherwise, I need to make repeated incremented calls to string_width until I find the good position...

 

[obscene]

I can't think of any way other than when the user clicks, get the x and y of the line, loop through a series of string_width() calls adding that value to your line start x and determining the position when that value is greater than the cursor x. Which by the way would only work if the text was aligned left. Pretty sloppy solution, but using GM to write a text editor is definitely going to be a beast.

 

[DaveInDev]

I can't think of any way other than when the user clicks, get the x and y of the line, loop through a series of string_width() calls adding that value to your line start x and determining the position when that value is greater than the cursor x. Which by the way would only work if the text was aligned left. Pretty sloppy solution, but using GM to write a text editor is definitely going to be a beast.

Yes, tx for your answer. That's finally what I did. My goal was not to write a full texteditor, but a UI Textbox where user can input a name or a simple string.

 

[HalRiyami]

Yes, tx for your answer. That's finally what I did. My goal was not to write a full texteditor, but a UI Textbox where user can input a name or a simple string.

I've done this in my app (search box where you can tap anywhere on the text to insert/delete characters). I don't remember exactly how I did it but I don't think I used a loop. I don't have access to my PC right now but I'll look up how I did it when I do.

 

[DaveInDev]

(search box where you can tap anywhere on the text to insert/delete characters).

Yes that's basically what I wanted to do. I did it with this annoying looping, but if you have another suggestion, I'm very interested

 

[Padouk]

There's a community driven library pool with a few addition for working with string

GMLscripts.com :: Computation :: Strings

www.gmlscripts.com

obviously, it's all boils down to a loop like you did

 

[HalRiyami]

@DaveInDev Ok I had a look at my code and, unfortunately, I did actually use a loop. I guess there is no other way around it. Sorry if I got your hopes up

 

[DaveInDev]

@DaveInDev Ok I had a look at my code and, unfortunately, I did actually use a loop. I guess there is no other way around it. Sorry if I got your hopes up

ha ha, no worry. Thanks for having a look at it.