Is there a way to resize a window?

[Wertzui123]

Hello,
I've noticed that it is possible to specify a size when a window is created, but I can't find a function to change it later.
Have I missed something or is this currently not possible?

[floooh]

Nope that's currently not possible, mainly because this doesn't make sense in browsers and on mobile platforms.

I had started to add more window functions in a WIP multiwindow-branch (which stalled because of various problems on macOS), but it might make sense to move at least those functions over into the main branch (with the setter functions being empty stubs on platforms where programmatic resizing doesn't make sense).

sokol/sokol_app.h

Lines 1497 to 1521 in 57688eb

	/* set client rect size in logical 'window system pixels' */
	SOKOL_APP_API_DECL void sapp_set_client_size(int width, int height);
	/* same as sapp_set_client_size(), but with float parameters */
	SOKOL_APP_API_DECL void sapp_set_client_sizef(float width, float height);
	/* get client rect width in logical 'window system pixels' */
	SOKOL_APP_API_DECL int sapp_client_width(void);
	/* same as sapp_client_width() but returns float */
	SOKOL_APP_API_DECL float sapp_client_widthf(void);
	/* get client rect height in logical 'window system pixels' */
	SOKOL_APP_API_DECL int sapp_client_height(void);
	/* same as sapp_client_height() but returns float */
	SOKOL_APP_API_DECL float sapp_client_heightf(void);
	/* set client rect position in logical 'window system pixels' */
	SOKOL_APP_API_DECL void sapp_set_client_pos(int x, int y);
	/* same as sapp_set_client_pos(), but with float parameters */
	SOKOL_APP_API_DECL void sapp_set_client_posf(float x, float y);
	/* get client rect horizontal position in logical 'window system pixels' */
	SOKOL_APP_API_DECL int sapp_client_posx(void);
	/* same as sapp_client_posx(), but returns float */
	SOKOL_APP_API_DECL float sapp_client_posxf(void);
	/* get client rect vertical position in logical 'window system pixels' */
	SOKOL_APP_API_DECL int sapp_client_posy(void);
	/* same as sapp_client_posy(), but returns float */
	SOKOL_APP_API_DECL float sapp_client_posyf(void);

[Wertzui123]

I'd love to see this in the main branch.

Do you plan to continue the multiwindow branch in the near future? This is something I'm really looking forward to.

And by the way, thanks for this awesome library.

[floooh]

Do you plan to continue the multiwindow branch in the near future?

I don't know yet, on macOS I was hitting a wall that the whole application is blocked for around a second if one window becomes obscured. A workaround would probably require to run each window in its own thread. The next big feature will probably be finishing the WebGPU support in sokol_gfx.h and sokol_app.h.

[Wertzui123]

A workaround would probably require to run each window in its own thread

I think this would make sense anyway.

The next big feature will probably be finishing the WebGPU support in sokol_gfx.h and sokol_app.h.

Sounds interesting!

[meshula]

fwiw, this pr ocornut/imgui#4821 claims to address an issue in dear imgui that involves imgui suspending when a window is obscured on mac. wonder if there's any clues in there that might help here.

"✅ Fix a performance / hang issue when a window is completely occluded, which resulted in nextDrawable hanging for about 1 second, causing ImGui to become unresponsive"

exactly the same maybe?

[floooh]

Oh, interesting. Yes this sounds like exactly the same issue I've been seeing. Thanks for pinging me!

[stuartcarnie]

@floooh if the CAMetalLayer is completely occluded by another window, nextDrawable hangs. I resolved it by the following:

https://github.com/ocornut/imgui/blob/b685b625c302c0cb1844e0155e0a4fbb4b3d967b/backends/imgui_impl_metal.mm#L246-L253

[floooh]

Thanks @stuartcarnie, I need to try this :) IFIR I had checked the occlusionState member before but found that this triggers too late, but maybe I did something wrong there.

[edubart]

+1 for window resize method

mainly because this doesn't make sense in browsers and on mobile platforms.

Actually I was needing such feature in the browser, that is, to change the canvas size at runtime, so I think it makes sense in the browser. My workaround at the moment is to resize canvas using JS code.

[lou256]

Has anyone developed a branch with this functionality? theres working code here for mac os:
> https://github.com/floooh/sokol/blob/57688eb0c5d09f6149ae6a612c5b53a56e94c328/sokol_app.h#L1497-L1521

I've been trying to hack it in for windows but its kind of finicky