Tk Source Code

Tk uses ugly Motif-style cascade arrows in cascading menus on X11, as seen in the attached screenshot Cascade_old.png. These arrows have raised and sunken relief and a border width of 2.

This ticket proposes to replace the ugly Motif-style cascade arrows with modern-looking ones of flat relief, filled with the color specified by the -foreground or -activeforeground widget or menu entry option, or -disabledforeground widget option, depending on the state of the entry in question. The attached screenshot Cascade_new.png shows the nice modern look of the cascade arrows drawn by the code implemented in the x11-cascade-arrows branch.

Fixed in "core-8-6-branch", too. See commit [88cc6f9e].

Fixed by commits [c36f3908] and [f47592cf].

While working on the improved, modern look of the cascade arrows, I discovered quite a few hard-coded screen distances related to menus, given in pixels (!). This has always been a bad programming habit, which on scaled screens leads to bad-looking menus and especially menubars. Now I have replaced all these numbers with scaled ones, according to the screen's scaling level.

Unlike the current cascade arrows, the proposed new ones have an optimal shape that makes sure that the edges will always be straight lines, regardless of the size (which in Tk 9+ is scaling-aware).