ColorEdit4 defualt hex input defaults alpha to 00

[squadack]

Version/Branch of Dear ImGui:

Version: 1.78
Branch: master

My Issue/Question:

Currently, when using input field in ColorEdit4() to type/paste hexadecimal color and the number will be too short (i.e. will not include alpha value), tha alpha value will default to 0. In my opinion defaulting to FF would be better in case someone pastes a color without alpha channel to make this color visible.

One possible solution could be to replace line

imgui/imgui_widgets.cpp

Line 4807 in 688e064

i[0] = i[1] = i[2] = i[3] = 0;

with

i[0] = i[1] = i[2] = 0;
i[3] = 255;

Screenshots/Video

Before loosing focus:

After loosing focus:

Standalone, minimal, complete and verifiable example:
N/A

[ocornut]

That's a good idea! I have no applied this change. Thank you!