From f52d7f5eeaf6f125b1370064082166493d157f2c Mon Sep 17 00:00:00 2001 From: Gabriel Jacobo Date: Tue, 28 Jan 2014 11:39:37 -0300 Subject: [PATCH] [Wayland] Fixes segfault when mouse enters window --- src/video/wayland/SDL_waylandevents.c | 107 +++++++++++++++----------- src/video/wayland/SDL_waylandmouse.c | 2 + 2 files changed, 64 insertions(+), 45 deletions(-) diff --git a/src/video/wayland/SDL_waylandevents.c b/src/video/wayland/SDL_waylandevents.c index 617857421..568c668bd 100644 --- a/src/video/wayland/SDL_waylandevents.c +++ b/src/video/wayland/SDL_waylandevents.c @@ -86,10 +86,19 @@ pointer_handle_enter(void *data, struct wl_pointer *pointer, /* enter event for a window we've just destroyed */ return; } + + /* This handler will be called twice in Wayland 1.4 + * Once for the window surface which has valid user data + * and again for the mouse cursor surface which does not have valid user data + * We ignore the later + */ - input->pointer_focus = wl_surface_get_user_data(surface); - window = input->pointer_focus; - SDL_SetMouseFocus(window->sdlwindow); + window = (SDL_WindowData *)wl_surface_get_user_data(surface); + + if (window) { + input->pointer_focus = window; + SDL_SetMouseFocus(window->sdlwindow); + } } static void @@ -98,8 +107,10 @@ pointer_handle_leave(void *data, struct wl_pointer *pointer, { struct SDL_WaylandInput *input = data; - SDL_SetMouseFocus(NULL); - input->pointer_focus = NULL; + if (input->pointer_focus) { + SDL_SetMouseFocus(NULL); + input->pointer_focus = NULL; + } } static void @@ -110,8 +121,9 @@ pointer_handle_motion(void *data, struct wl_pointer *pointer, SDL_WindowData *window = input->pointer_focus; int sx = wl_fixed_to_int(sx_w); int sy = wl_fixed_to_int(sy_w); - - SDL_SendMouseMotion(window->sdlwindow, 0, 0, sx, sy); + if (input->pointer_focus) { + SDL_SendMouseMotion(window->sdlwindow, 0, 0, sx, sy); + } } static void @@ -122,29 +134,31 @@ pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial, SDL_WindowData *window = input->pointer_focus; enum wl_pointer_button_state state = state_w; uint32_t sdl_button; + + if (input->pointer_focus) { + switch (button) { + case BTN_LEFT: + sdl_button = SDL_BUTTON_LEFT; + break; + case BTN_MIDDLE: + sdl_button = SDL_BUTTON_MIDDLE; + break; + case BTN_RIGHT: + sdl_button = SDL_BUTTON_RIGHT; + break; + case BTN_SIDE: + sdl_button = SDL_BUTTON_X1; + break; + case BTN_EXTRA: + sdl_button = SDL_BUTTON_X2; + break; + default: + return; + } - switch (button) { - case BTN_LEFT: - sdl_button = SDL_BUTTON_LEFT; - break; - case BTN_MIDDLE: - sdl_button = SDL_BUTTON_MIDDLE; - break; - case BTN_RIGHT: - sdl_button = SDL_BUTTON_RIGHT; - break; - case BTN_SIDE: - sdl_button = SDL_BUTTON_X1; - break; - case BTN_EXTRA: - sdl_button = SDL_BUTTON_X2; - break; - default: - return; + SDL_SendMouseButton(window->sdlwindow, 0, + state ? SDL_PRESSED : SDL_RELEASED, sdl_button); } - - SDL_SendMouseButton(window->sdlwindow, 0, - state ? SDL_PRESSED : SDL_RELEASED, sdl_button); } static void @@ -156,20 +170,22 @@ pointer_handle_axis(void *data, struct wl_pointer *pointer, enum wl_pointer_axis a = axis; int x, y; - switch (a) { - case WL_POINTER_AXIS_VERTICAL_SCROLL: - x = 0; - y = wl_fixed_to_int(value); - break; - case WL_POINTER_AXIS_HORIZONTAL_SCROLL: - x = wl_fixed_to_int(value); - y = 0; - break; - default: - return; - } + if (input->pointer_focus) { + switch (a) { + case WL_POINTER_AXIS_VERTICAL_SCROLL: + x = 0; + y = wl_fixed_to_int(value); + break; + case WL_POINTER_AXIS_HORIZONTAL_SCROLL: + x = wl_fixed_to_int(value); + y = 0; + break; + default: + return; + } - SDL_SendMouseWheel(window->sdlwindow, 0, x, y); + SDL_SendMouseWheel(window->sdlwindow, 0, x, y); + } } static const struct wl_pointer_listener pointer_listener = { @@ -234,7 +250,9 @@ keyboard_handle_enter(void *data, struct wl_keyboard *keyboard, input->keyboard_focus = window; window->keyboard_device = input; - SDL_SetKeyboardFocus(window->sdlwindow); + if (window) { + SDL_SetKeyboardFocus(window->sdlwindow); + } } static void @@ -340,11 +358,10 @@ Wayland_display_add_input(SDL_VideoData *d, uint32_t id) { struct SDL_WaylandInput *input; - input = malloc(sizeof *input); + input = SDL_calloc(1, sizeof *input); if (input == NULL) return; - memset(input, 0, sizeof *input); input->display = d; input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface, 1); @@ -378,7 +395,7 @@ void Wayland_display_destroy_input(SDL_VideoData *d) if (input->xkb.keymap) WAYLAND_xkb_keymap_unref(input->xkb.keymap); - free(input); + SDL_free(input); d->input = NULL; } diff --git a/src/video/wayland/SDL_waylandmouse.c b/src/video/wayland/SDL_waylandmouse.c index ae634b62e..6f6605ea6 100644 --- a/src/video/wayland/SDL_waylandmouse.c +++ b/src/video/wayland/SDL_waylandmouse.c @@ -181,6 +181,7 @@ Wayland_CreateCursor(SDL_Surface *surface, int hot_x, int hot_y) surface->h * surface->pitch); data->surface = wl_compositor_create_surface(wd->compositor); + wl_surface_set_user_data(data->surface, NULL); wl_surface_attach(data->surface, data->buffer, 0, @@ -214,6 +215,7 @@ CreateCursorFromWlCursor(SDL_VideoData *d, struct wl_cursor *wlcursor) * reference to it here */ data->buffer = NULL; data->surface = wl_compositor_create_surface(d->compositor); + wl_surface_set_user_data(data->surface, NULL); wl_surface_attach(data->surface, WAYLAND_wl_cursor_image_get_buffer(wlcursor->images[0]), 0,