Changing font size in string.format

[dpaget21]

Is there any way to change the txt size in a txt_set string format?

function gps_wp_callback (WPnextID, DISnextWP)
txt_set(txt_next_WP, WPnextID)
DISnextWP = DISnextWP/1852
txt_set(txt_Dis_NM, string.format("%.1fNM", DISnextWP))
end

I am building the GI 275 and would like to make the "NM" smaller like it is on the real instrument

[Corjan]

Hi

Use txt_style instead:
https://siminnovations.com/wiki/index.p ... =Txt_style

Corjan

[JackZ]

I understand you want TWO different text sizes in the same string (ie XXX Nm, where the XXX number is bigger than Nm?

I think this is not possible right now in AM, since the same text_style applies to all the characters of a string (color, size), so my advice is to use two different strings side by side, one for the number itself, the other for the “Nm” text. In the text_add() you will be then able to choose whatever color/size you want for both parts.

If visibility is a concern, simply create a group out of the two text_add() and then turn the visibility of the group on/off with one instruction.

That’s what I did for the A320 MCDU, where each character of a line is put in an individual text_add() for complete control. Each character assembled into a line is organised in an array of characters for ease of access.
(See the bottom multicolored line below)

Jacques

[Ralph]

The solution from JackZ is the easiest. Another, more difficult solution, and I'm not 100% if it'll work, is to make a custom font with bigger and smaller sized characters.
I usually use FontForge if fonts need to be customized. https://fontforge.org/en-US/

[Keith Baxter]

Hi,

AM and lua is very powerful when using tables.

Having worked on the Gi 275, Tables are the route IMHO. As Corjan said. Use txt_style to change the format.
Create a table with your styles and call options from your table and concatenate.

Keith

[JackZ]

@Keith Baxter
I don't understand how you can concatenate different style in the same string, as txt_styles applies to the whole text string if I'm not mistaken?

[JackZ]

here's a simple code based on yours for you to try

Notice the use of halign here

Code: Select all

txt_next_WP=txt_add("XXXXX", "font:arimo_regular.ttf; size:50; color: red;valign:bottom;", 50, 50, 300, 50)
txt_Dis_NM=txt_add("XXX", "font:arimo_regular.ttf; size:50; color: red; valign:bottom; halign:right;", 50, 100, 95, 50)
txt_Dis_NM_legend=txt_add("Nm", "font:arimo_regular.ttf; size:30; color: blue; valign:bottom; halign:left;", 145, 100, 100, 45)
DME_grp=group_add(txt_Dis_NM,txt_Dis_NM_legend)

visible(DME_grp,true)

function gps_wp_callback (WPnextID, DISnextWP)
txt_set(txt_next_WP, WPnextID)
DISnextWP = DISnextWP/1852
txt_set(txt_Dis_NM, string.format("%0.1f", DISnextWP))
end

gps_wp_callback('WAYPOINT',852)
txt_style(txt_Dis_NM,"color: green;")

image.png (7.69 KiB) Viewed 875 times

[dpaget21]

here's a simple code based on yours for you to try

Notice the use of halign here

Code: Select all

txt_next_WP=txt_add("XXXXX", "font:arimo_regular.ttf; size:50; color: red;valign:bottom;", 50, 50, 300, 50)
txt_Dis_NM=txt_add("XXX", "font:arimo_regular.ttf; size:50; color: red; valign:bottom; halign:right;", 50, 100, 95, 50)
txt_Dis_NM_legend=txt_add("Nm", "font:arimo_regular.ttf; size:30; color: blue; valign:bottom; halign:left;", 145, 100, 100, 45)
DME_grp=group_add(txt_Dis_NM,txt_Dis_NM_legend)

visible(DME_grp,true)

function gps_wp_callback (WPnextID, DISnextWP)
txt_set(txt_next_WP, WPnextID)
DISnextWP = DISnextWP/1852
txt_set(txt_Dis_NM, string.format("%0.1f", DISnextWP))
end

gps_wp_callback('WAYPOINT',852)
txt_style(txt_Dis_NM,"color: green;")

image.png

So simple using halign, don't know why I didn't think of that, maybe it was too late in the evening.

The HSI is nearly complete now onto teaching myself multi-page instruments

[JackZ]

You're welcome....