Editing WoW:UIOBJECT FontString (section)

=== Anchoring 1 corner ===
Let's assume we have a frame that is 100x100, and that we anchor our fontstring to the topleft corner only, and tell it to display a sizeable chunk of text in a 10 point font, that is ~250 pixels long if nonwrapped (i.e. [[API FontString GetStringWidth|GetStringWidth()]] would return 250).

{| style="background-color: transparent;"
| [[Image:fontstring-wrapping-100x100-topleft.gif]]
|
* The text runs off as far as it needs to.
* GetWidth() will return 250, the same as GetStringWidth()
* GetHeight() will return 10
|}


Now, if we explicitly SetWidth(100), the following happens:

{| style="background-color: transparent;"
| [[Image:fontstring-wrapping-100x100-topleft-w100.gif]]
|
* The output is clamped to 100 pixels wide
* GetWidth() will always return return 100 no matter how much text there is
* GetHeight() will return 40 (it needed 4 lines to display the entire text)
|}


And if we add a SetHeight(20), it will do what we expect:

{| style="background-color: transparent;"
| [[Image:fontstring-wrapping-100x100-topleft-w100-h20.gif]]
|
* The output is clamped to 100 pixels wide and 20 pixels high
* GetWidth() will always return 100 no matter how much text there is
* GetHeight() will always return 20 no matter how much text there is
|}


So far, no real surprises, except for the fact that fontstrings will display without a width and height set, while other objects do not. The fun starts when we anchor more points.