Auto-scale text size to Paragraph bounding box

[PeterLundgren]

Is there a way to auto scale each row of text so that it aligns on both the left and right side?

Ideal would be if every row of text is seperated with a line break so that I can choose the amount of text on each row.

Is it possible to connect the width of each row to the Paragraph Text Bounding box?
Is it possible to change the leading of each row with a expression slider?

 

[Adam24585301qycn]

do you want this to be 1 text layer, or 3 seperate text layers ?

[Rick Gerard · Accepted solution]

Text expressions only allow one font size or scale operator, so you need three text layers. You can't scale individual lines in a text box with an expression.

With the Anchor Point centered, Position tied to the layer above, and scale based on a percentage of the comp width, you can use sourceRectAtTime() to make the appropriate calculations. An expression to a text layer's Anchor Point and modified by scale will always center the anchor point in the text. Use scale multiplied by sourceRectAtTime.height/2 for horizontal positioning and thisComp,width/2 for centering along with an If/Else argument and you can stack up as many layers as you want.

Then, you can nest the Text Box comp in your main comp and adjust the position (of the pre-comp/nested comp). to place the text box where it needs to be.

Here are the expressions:

// Anchor Point
box = sourceRectAtTime();
s = scale[0/100];
[box.width/2 + box.left, box.height/2 + box.top];

// Position
if (index == 1){
	tLyr = index;
	x = thisComp.width/2;

	Ls = scale[0]/100;
	Lh = sourceRectAtTime().height/2 * Ls;
	pad = 20;
	p = [x, Lh + pad];
}
else{
	x = thisComp.width/2;
	TL = thisComp.layer(index - 1);
	TLs = TL.scale[0]/100;
	TLx = TL.position[1];
	TLh = TL.sourceRectAtTime().height/2 * TLs;

	Ls = scale[0]/100;
	Lh = sourceRectAtTime().height/2 * Ls;


	pad = 20;
	p = [x, TLx + TLh + Lh + pad];
	
}

// Scale
w = thisComp.width * .9;// 90% of comp width
box = sourceRectAtTime();
s = w/box.width * 100;
[s, s]

That should get you started. 

note: I probably could have simplified the If/Else arguement.

[PeterLundgren]

Wow. Thanks.

Always wish there is easier solutions with AE Expressions.

That looks like a really neat solution!

Had to solve i fast so did a quick-n-dirty solution that worked this time but this looks like a much more flexible solution.

Will try it next time!

Thanks Rick!!