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Interactive version of test program with two windows

pointer_bug.c (text/x-csrc), 3.07 KB, created by M Stoeckl on 2020-07-31 02:09:38 UTC

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Description:

Filename:

MIME Type:

Creator: M Stoeckl

Created: 2020-07-31 02:09:38 UTC

Size: 3.07 KB

patch

obsolete

>// gcc -I/usr/include/SDL2/ -lSDL2 pointer_bug.c -o pointer_bug && ./pointer_bug
>#include "SDL.h"
>#include <stdio.h>
>
>int main(int argc, char *argv[]) {
>
>  SDL_Init(SDL_INIT_VIDEO);
>  SDL_Window *window1 =
>      SDL_CreateWindow("Lock and Confine bug 1", SDL_WINDOWPOS_UNDEFINED,
>                       SDL_WINDOWPOS_UNDEFINED, 600, 400, SDL_WINDOW_RESIZABLE);
>  SDL_Window *window2 =
>      SDL_CreateWindow("Lock and Confine bug 2", SDL_WINDOWPOS_UNDEFINED,
>                       SDL_WINDOWPOS_UNDEFINED, 600, 400, SDL_WINDOW_RESIZABLE);
>  SDL_Renderer *renderer1 = SDL_CreateRenderer(
>      window1, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
>  SDL_Renderer *renderer2 = SDL_CreateRenderer(
>      window2, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
>  SDL_ShowWindow(window1);
>  SDL_ShowWindow(window2);
>
>  SDL_bool relmouse = SDL_FALSE;
>
>  Uint32 wid1 = SDL_GetWindowID(window1);
>  Uint32 wid2 = SDL_GetWindowID(window2);
>  Uint32 no_window = (Uint32)-1;
>  ;
>  Uint32 grabbed = no_window;
>
>  fprintf(stderr, "Usage: G toggles grab; R toggles relative mouse; Q quits\n");
>  int counter = 0;
>  while (1) {
>    fprintf(stderr, "counter %d, relmouse=%c, grabbed=%s\n", counter,
>            relmouse ? 'Y' : 'n',
>            grabbed == no_window ? "none"
>                                 : (grabbed == wid1 ? "Red" : "Green"));
>
>    SDL_Event event;
>    if (SDL_PollEvent(&event)) {
>      if (event.type == SDL_KEYDOWN && event.key.keysym.sym == 'g') {
>        if (grabbed == event.key.windowID) {
>          grabbed = no_window;
>        } else {
>          grabbed = event.key.windowID;
>        }
>        fprintf(stderr, "grab=%c requested on window %s\n", grabbed ? 'Y' : 'n',
>                grabbed == no_window ? "none"
>                                     : (grabbed == wid1 ? "Red" : "Green"));
>        if (grabbed == no_window) {
>          SDL_SetWindowGrab(event.key.windowID == wid1 ? window1 : window2,
>                            SDL_FALSE);
>        } else {
>          SDL_SetWindowGrab(event.key.windowID == wid1 ? window1 : window2,
>                            SDL_TRUE);
>        }
>      } else if (event.type == SDL_KEYDOWN && event.key.keysym.sym == 'r') {
>        // On Wayland, this will lead to a Wayland protocol error, and the
>        // window will close. On X11, this will work correctly.
>        relmouse = !relmouse;
>        fprintf(stderr, "relmouse=%c requested\n", relmouse ? 'Y' : 'n');
>        SDL_SetRelativeMouseMode(relmouse);
>      } else if (event.type == SDL_QUIT ||
>                 (event.type == SDL_KEYDOWN && event.key.keysym.sym == 'q')) {
>        fprintf(stderr, "exit requested\n");
>        break;
>      }
>    }
>
>    SDL_RenderClear(renderer1);
>    SDL_SetRenderDrawColor(renderer1, 255, 0, 0, 255);
>    SDL_RenderFillRect(renderer1, NULL);
>    SDL_RenderPresent(renderer1);
>
>    SDL_RenderClear(renderer2);
>    SDL_SetRenderDrawColor(renderer2, 0, 255, 0, 255);
>    SDL_RenderFillRect(renderer2, NULL);
>    SDL_RenderPresent(renderer2);
>    counter++;
>  }
>  fprintf(stderr, "done\n");
>
>  SDL_DestroyWindow(window1);
>  SDL_DestroyWindow(window2);
>  SDL_Quit();
>  return 0;
>}

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Attachments on bug 5238: 4420 | 4421 | 4429 | 4430 | 4432 | 4433

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.