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x11: Let apps specify a custom _NET_WM_WINDOW_TYPE. 

Fixes #5185.
This commit is contained in:
Ryan C. Gordon 2022-01-11 21:17:21 -05:00
parent f9b918ff40
commit 42302d0a59
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GPG Key ID: FA148B892AB48044
2 changed files with 24 additions and 0 deletions
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21
include/SDL_hints.h
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@ -1824,6 +1824,27 @@ extern "C" {
*/
#define SDL_HINT_AUDIO_INCLUDE_MONITORS "SDL_AUDIO_INCLUDE_MONITORS"
/**
* \brief A variable that forces X11 windows to create as a custom type.
*
* This is currently only used for X11 and ignored elsewhere.
*
* During SDL_CreateWindow, SDL uses the _NET_WM_WINDOW_TYPE X11 property
* to report to the window manager the type of window it wants to create.
* This might be set to various things if SDL_WINDOW_TOOLTIP or
* SDL_WINDOW_POPUP_MENU, etc, were specified. For "normal" windows that
* haven't set a specific type, this hint can be used to specify a custom
* type. For example, a dock window might set this to
* "_NET_WM_WINDOW_TYPE_DOCK".
*
* If not set or set to "", this hint is ignored. This hint must be set
* before the SDL_CreateWindow() call that it is intended to affect.
*
* This hint is available since SDL 2.0.22. Before then, virtual devices are
* always ignored.
*/
#define SDL_HINT_X11_WINDOW_TYPE "SDL_X11_WINDOW_TYPE"
/**
* \brief An enumeration of hint priorities

3
src/video/x11/SDL_x11window.c
View File

@ -392,6 +392,7 @@ X11_CreateWindow(_THIS, SDL_Window * window)
long compositor = 1;
Atom _NET_WM_PID;
long fevent = 0;
const char *hint = NULL;
#if SDL_VIDEO_OPENGL_GLX || SDL_VIDEO_OPENGL_EGL
const char *forced_visual_id = SDL_GetHint(SDL_HINT_VIDEO_X11_WINDOW_VISUALID);
@ -591,6 +592,8 @@ X11_CreateWindow(_THIS, SDL_Window * window)
wintype_name = "_NET_WM_WINDOW_TYPE_TOOLTIP";
} else if (window->flags & SDL_WINDOW_POPUP_MENU) {
wintype_name = "_NET_WM_WINDOW_TYPE_POPUP_MENU";
} else if ( ((hint = SDL_GetHint(SDL_HINT_X11_WINDOW_TYPE)) != NULL) && *hint ) {
wintype_name = hint;
} else {
wintype_name = "_NET_WM_WINDOW_TYPE_NORMAL";
compositor = 1; /* disable compositing for "normal" windows */