Blur needs cancel button

[qubodup]

Just by clicking on the blur bar on a slow enough computer with a complex enough shape, you can cause Inkscape to freeze for minutes.

There needs to be a method to see and stop time intensive processes, especially if the UI allows starting them easily by a badly aimed click.

For example GIMP has a bottom bar progress bar and cancel button for filter processes.

Example situation:

I opened the Image from https://sourceforge.net/p/trigger-rally/feature-requests/_discuss/thread/24bc90db/7e7c/attachment/fontDsm.svg with one of the font layer's characters converted to paths and merged into one shape (ctrl-+). Then I accidentally clicked at about 90% blur.

Inkscape has not been responsive for 10 minutes. Looking at the image it seems to be about 50% done (upper half appears to be rendered).
100% CPU use, 28.7 RAM use (of 8GB).

I will cancel and continue with an autosave.

My system:
Distro 4.0.4-1-ARCH x86_64
Mainboard FOXCONN A7GM-S 2.0
CPU AMD Phenom(tm) 9550 Quad-Core Processor
              4 x 2200 MHz, 64-bit
RAM 7.8G
Video Advanced Micro Devices, Inc. [AMD/ATI]
              Cape Verde PRO [Radeon HD 7750 / R7 250E]
OpenGL 4.4.13374 Core Profile Context 15.20.1013, GLSL 4.40

[Brynn (brynn4inks-deactivatedaccount)]

I made a similar request some time ago. https://bugs.launchpad.net/inkscape/+bug/459774

[jazzynico (jazzynico)]

Marking duplicate of Bug #169054 "Filters cannot be interrupted" (https://bugs.launchpad.net/inkscape/+bug/169054).
Don't hesitate to comment if you think it's a different issue.