mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-09-05 19:08:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

X11: Center Message Box on Multi Monitor Displays (#12819)

Browse Source 
Use XRandr to find the position of the current screen to center the message box on that window
This commit is contained in:
Temdog007
2025-05-01 13:38:52 -07:00
committed by GitHub
parent c5d5967c3a
commit 4ef8b6ce1b
1 changed files with 12 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/video/x11/SDL_x11messagebox.c
View File

@@ -425,6 +425,11 @@ static bool X11_MessageBoxCreateWindow(SDL_MessageBoxDataX11 *data)
Display *display = data->display;
SDL_WindowData *windowdata = NULL;
const SDL_MessageBoxData *messageboxdata = data->messageboxdata;
#ifdef XRANDR_DISABLED_BY_DEFAULT
const bool use_xrandr_by_default = false;
#else
const bool use_xrandr_by_default = true;
#endif
if (messageboxdata->window) {
SDL_DisplayData *displaydata = SDL_GetDisplayDriverDataForWindow(messageboxdata->window);
@@ -497,7 +502,13 @@ static bool X11_MessageBoxCreateWindow(SDL_MessageBoxDataX11 *data)
const SDL_DisplayData *dpydata = dpy->internal;
x = dpydata->x + ((dpy->current_mode->w - data->dialog_width) / 2);
y = dpydata->y + ((dpy->current_mode->h - data->dialog_height) / 3);
} else { // oh well. This will misposition on a multi-head setup. Init first next time.
} else if (SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_XRANDR, use_xrandr_by_default)) {
XRRScreenResources *screen = X11_XRRGetScreenResourcesCurrent(display, DefaultRootWindow(display));
XRRCrtcInfo *crtc_info = X11_XRRGetCrtcInfo(display, screen, screen->crtcs[0]);
x = (crtc_info->width - data->dialog_width) / 2;
y = (crtc_info->height - data->dialog_height) / 3;
} else {
// oh well. This will misposition on a multi-head setup. Init first next time.
x = (DisplayWidth(display, data->screen) - data->dialog_width) / 2;
y = (DisplayHeight(display, data->screen) - data->dialog_height) / 3;
}