Make Window Resize Grip Resizable

[klianc09]

Version/Branch of Dear ImGui:

v1.91.8 WIP

Back-ends:

any

Compiler, OS:

Not Relevant

Full config/build information:

No response

Details:

Hi, I'd like to increase the size of the window resize grip (the triangle in the lower right corner that let's one resize windows), because it's hard to hit on a touchscreen.

I've checked the code and it seems that it's only dependant on FontSize and the WindowRounding.

from imgui.cpp:
const float resize_grip_draw_size = IM_TRUNC(ImMax(g.FontSize * 1.10f, window->WindowRounding + 1.0f + g.FontSize * 0.2f));

Increasing the Font Size is not desirable as that would mean less text can fit on a screen.
Increasing WindowRounding is also not really what I want, but is a potential workaround for now.

Screenshots/Video:

No response

Minimal, Complete and Verifiable Example code:

No response

[ocornut]

There's no way to resize it yet, but note that there's a style.TouchExtraPadding value which is meant to add hit-test padding.

It's generally better than this value is <= style.ItemSpacing*0.5f to avoid overlap between items.