Wayland: Remove support for wl_shell

This is adapted to 3.3-stable from
599fb3de34 and
27295b508f.

README.md

@@ -139,6 +139,7 @@ information on what to include when reporting a bug.
  - [X11] Bugfix: A malformed response during selection transfer could cause a segfault
  - [X11] Bugfix: Some calls would reset Xlib to the default error handler (#2108)
  - [Wayland] Added support for file path drop events (#2040)
+ - [Wayland] Removed support for the deprecated wl\_shell protocol
  - [Wayland] Bugfix: `glfwSetClipboardString` would fail if set to result of
    `glfwGetClipboardString`
  - [Wayland] Bugfix: Data source creation error would cause double free at termination

docs/compat.dox

@@ -104,11 +104,7 @@ has been configured in the compositor.
 GLFW uses the [xdg-shell
 protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/stable/xdg-shell/xdg-shell.xml)
 to provide better window management.  This protocol is part of
-wayland-protocols 1.12, and mandatory at build time.  If the running compositor
+wayland-protocols 1.12, and mandatory at build time.
-does not support this protocol, the older [wl_shell
-interface](https://cgit.freedesktop.org/wayland/wayland/tree/protocol/wayland.xml#n972)
-will be used instead.  This will result in a worse integration with the
-desktop, especially on tiling compositors.
 
 GLFW uses the [relative pointer
 protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/relative-pointer/relative-pointer-unstable-v1.xml)

docs/news.dox

@@ -378,6 +378,13 @@ Existing projects and makefiles that set the `LIB_SUFFIX` option will use the
 suffix chosen by the GNUInstallDirs package and the option will be ignored.
 
 
+@subsubsection wl_shell_33 Support for the wl_shell protocol
+
+Support for the wl_shell protocol has been removed and GLFW now only supports
+the XDG-Shell protocol.  If your Wayland compositor does not support XDG-Shell
+then GLFW will fail to initialize.
+
+
 @subsubsection mir_removed_33 Mir support
 
 The experimental Mir support has been completely removed as the Mir project has

include/GLFW/glfw3.h

@@ -3226,10 +3226,6 @@ GLFWAPI void glfwSetWindowOpacity(GLFWwindow* window, float opacity);
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
- *  @remark @wayland There is no concept of iconification in wl_shell, this
- *  function will emit @ref GLFW_PLATFORM_ERROR when using this deprecated
- *  protocol.
- *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_iconify
@@ -3809,8 +3805,8 @@ GLFWAPI GLFWwindowfocusfun glfwSetWindowFocusCallback(GLFWwindow* window, GLFWwi
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
- *  @remark @wayland The wl_shell protocol has no concept of iconification,
+ *  @remark @wayland The XDG-shell protocol has no event for iconification, so
- *  this callback will never be called when using this deprecated protocol.
+ *  this callback will never be called.
  *
  *  @thread_safety This function must only be called from the main thread.
  *

src/wl_init.c

@@ -76,11 +76,6 @@ static void registryHandleGlobal(void* userData,
         _glfw.wl.shm =
             wl_registry_bind(registry, name, &wl_shm_interface, 1);
     }
-    else if (strcmp(interface, "wl_shell") == 0)
-    {
-        _glfw.wl.shell =
-            wl_registry_bind(registry, name, &wl_shell_interface, 1);
-    }
     else if (strcmp(interface, "wl_output") == 0)
     {
         _glfwAddOutputWayland(name, version);
@@ -439,6 +434,13 @@ int _glfwPlatformInit(void)
     if (_glfw.wl.seatVersion >= 4)
         _glfw.wl.timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
 
+    if (!_glfw.wl.wmBase)
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "Wayland: Failed to find xdg-shell in your compositor");
+        return GLFW_FALSE;
+    }
+
     if (_glfw.wl.pointer && _glfw.wl.shm)
     {
         cursorTheme = getenv("XCURSOR_THEME");
@@ -529,8 +531,6 @@ void _glfwPlatformTerminate(void)
         wl_compositor_destroy(_glfw.wl.compositor);
     if (_glfw.wl.shm)
         wl_shm_destroy(_glfw.wl.shm);
-    if (_glfw.wl.shell)
-        wl_shell_destroy(_glfw.wl.shell);
     if (_glfw.wl.viewporter)
         wp_viewporter_destroy(_glfw.wl.viewporter);
     if (_glfw.wl.decorationManager)

src/wl_platform.h

@@ -185,7 +185,6 @@ typedef struct _GLFWwindowWayland
     GLFWbool                    transparent;
     struct wl_surface*          surface;
     struct wl_egl_window*       native;
-    struct wl_shell_surface*    shellSurface;
     struct wl_callback*         callback;
 
     struct {
@@ -231,7 +230,6 @@ typedef struct _GLFWlibraryWayland
     struct wl_registry*         registry;
     struct wl_compositor*       compositor;
     struct wl_subcompositor*    subcompositor;
-    struct wl_shell*            shell;
     struct wl_shm*              shm;
     struct wl_seat*             seat;
     struct wl_pointer*          pointer;

src/wl_window.c

@@ -43,72 +43,6 @@
 #include <signal.h>
 #include <time.h>
 
-static void shellSurfaceHandlePing(void* data,
-                                   struct wl_shell_surface* shellSurface,
-                                   uint32_t serial)
-{
-    wl_shell_surface_pong(shellSurface, serial);
-}
-
-static void shellSurfaceHandleConfigure(void* data,
-                                        struct wl_shell_surface* shellSurface,
-                                        uint32_t edges,
-                                        int32_t width,
-                                        int32_t height)
-{
-    _GLFWwindow* window = data;
-    float aspectRatio;
-    float targetRatio;
-
-    if (!window->monitor)
-    {
-        if (_glfw.wl.viewporter && window->decorated)
-        {
-            width -= _GLFW_DECORATION_HORIZONTAL;
-            height -= _GLFW_DECORATION_VERTICAL;
-        }
-        if (width < 1)
-            width = 1;
-        if (height < 1)
-            height = 1;
-
-        if (window->numer != GLFW_DONT_CARE && window->denom != GLFW_DONT_CARE)
-        {
-            aspectRatio = (float)width / (float)height;
-            targetRatio = (float)window->numer / (float)window->denom;
-            if (aspectRatio < targetRatio)
-                height = width / targetRatio;
-            else if (aspectRatio > targetRatio)
-                width = height * targetRatio;
-        }
-
-        if (window->minwidth != GLFW_DONT_CARE && width < window->minwidth)
-            width = window->minwidth;
-        else if (window->maxwidth != GLFW_DONT_CARE && width > window->maxwidth)
-            width = window->maxwidth;
-
-        if (window->minheight != GLFW_DONT_CARE && height < window->minheight)
-            height = window->minheight;
-        else if (window->maxheight != GLFW_DONT_CARE && height > window->maxheight)
-            height = window->maxheight;
-    }
-
-    _glfwInputWindowSize(window, width, height);
-    _glfwPlatformSetWindowSize(window, width, height);
-    _glfwInputWindowDamage(window);
-}
-
-static void shellSurfaceHandlePopupDone(void* data,
-                                        struct wl_shell_surface* shellSurface)
-{
-}
-
-static const struct wl_shell_surface_listener shellSurfaceListener = {
-    shellSurfaceHandlePing,
-    shellSurfaceHandleConfigure,
-    shellSurfaceHandlePopupDone
-};
-
 static int createTmpfileCloexec(char* tmpname)
 {
     int fd;
@@ -546,66 +480,12 @@ static void setFullscreen(_GLFWwindow* window, _GLFWmonitor* monitor,
             window->wl.xdg.toplevel,
             monitor->wl.output);
     }
-    else if (window->wl.shellSurface)
+
-    {
-        wl_shell_surface_set_fullscreen(
-            window->wl.shellSurface,
-            WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
-            refreshRate * 1000, // Convert Hz to mHz.
-            monitor->wl.output);
-    }
     setIdleInhibitor(window, GLFW_TRUE);
     if (!window->wl.decorations.serverSide)
         destroyDecorations(window);
 }
 
-static GLFWbool createShellSurface(_GLFWwindow* window)
-{
-    if (!_glfw.wl.shell)
-    {
-        _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Wayland: wl_shell protocol not available");
-        return GLFW_FALSE;
-    }
-
-    window->wl.shellSurface = wl_shell_get_shell_surface(_glfw.wl.shell,
-                                                         window->wl.surface);
-    if (!window->wl.shellSurface)
-    {
-        _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Wayland: Shell surface creation failed");
-        return GLFW_FALSE;
-    }
-
-    wl_shell_surface_add_listener(window->wl.shellSurface,
-                                  &shellSurfaceListener,
-                                  window);
-
-    if (window->wl.title)
-        wl_shell_surface_set_title(window->wl.shellSurface, window->wl.title);
-
-    if (window->monitor)
-    {
-        setFullscreen(window, window->monitor, 0);
-    }
-    else if (window->wl.maximized)
-    {
-        wl_shell_surface_set_maximized(window->wl.shellSurface, NULL);
-        setIdleInhibitor(window, GLFW_FALSE);
-        createDecorations(window);
-    }
-    else
-    {
-        wl_shell_surface_set_toplevel(window->wl.shellSurface);
-        setIdleInhibitor(window, GLFW_FALSE);
-        createDecorations(window);
-    }
-
-    wl_surface_commit(window->wl.surface);
-
-    return GLFW_TRUE;
-}
-
 static void xdgToplevelHandleConfigure(void* userData,
                                        struct xdg_toplevel* toplevel,
                                        int32_t width,
@@ -1238,8 +1118,7 @@ static void pointerHandleButton(void* userData,
     _GLFWwindow* window = _glfw.wl.pointerFocus;
     int glfwButton;
 
-    // Both xdg-shell and wl_shell use the same values.
+    uint32_t edges = XDG_TOPLEVEL_RESIZE_EDGE_NONE;
-    uint32_t edges = WL_SHELL_SURFACE_RESIZE_NONE;
 
     if (!window)
         return;
@@ -1251,46 +1130,39 @@ static void pointerHandleButton(void* userData,
                 break;
             case topDecoration:
                 if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
-                    edges = WL_SHELL_SURFACE_RESIZE_TOP;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP;
                 else
                 {
-                    if (window->wl.xdg.toplevel)
                     xdg_toplevel_move(window->wl.xdg.toplevel, _glfw.wl.seat, serial);
-                    else
-                        wl_shell_surface_move(window->wl.shellSurface, _glfw.wl.seat, serial);
                 }
                 break;
             case leftDecoration:
                 if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
-                    edges = WL_SHELL_SURFACE_RESIZE_TOP_LEFT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT;
                 else
-                    edges = WL_SHELL_SURFACE_RESIZE_LEFT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_LEFT;
                 break;
             case rightDecoration:
                 if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
-                    edges = WL_SHELL_SURFACE_RESIZE_TOP_RIGHT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT;
                 else
-                    edges = WL_SHELL_SURFACE_RESIZE_RIGHT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_RIGHT;
                 break;
             case bottomDecoration:
                 if (window->wl.cursorPosX < _GLFW_DECORATION_WIDTH)
-                    edges = WL_SHELL_SURFACE_RESIZE_BOTTOM_LEFT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT;
                 else if (window->wl.cursorPosX > window->wl.width + _GLFW_DECORATION_WIDTH)
-                    edges = WL_SHELL_SURFACE_RESIZE_BOTTOM_RIGHT;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT;
                 else
-                    edges = WL_SHELL_SURFACE_RESIZE_BOTTOM;
+                    edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM;
                 break;
             default:
                 assert(0);
         }
-        if (edges != WL_SHELL_SURFACE_RESIZE_NONE)
+        if (edges != XDG_TOPLEVEL_RESIZE_EDGE_NONE)
         {
-            if (window->wl.xdg.toplevel)
             xdg_toplevel_resize(window->wl.xdg.toplevel, _glfw.wl.seat,
                                 serial, edges);
-            else
-                wl_shell_surface_resize(window->wl.shellSurface, _glfw.wl.seat,
-                                        serial, edges);
             return;
         }
     }
@@ -1958,9 +1830,6 @@ void _glfwPlatformDestroyWindow(_GLFWwindow* window)
     if (window->wl.native)
         wl_egl_window_destroy(window->wl.native);
 
-    if (window->wl.shellSurface)
-        wl_shell_surface_destroy(window->wl.shellSurface);
-
     if (window->wl.xdg.toplevel)
         xdg_toplevel_destroy(window->wl.xdg.toplevel);
 
@@ -1981,8 +1850,6 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
     window->wl.title = _glfw_strdup(title);
     if (window->wl.xdg.toplevel)
         xdg_toplevel_set_title(window->wl.xdg.toplevel, title);
-    else if (window->wl.shellSurface)
-        wl_shell_surface_set_title(window->wl.shellSurface, title);
 }
 
 void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
@@ -2027,8 +1894,6 @@ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
                                       int minwidth, int minheight,
                                       int maxwidth, int maxheight)
-{
-    if (_glfw.wl.wmBase)
 {
     if (window->wl.xdg.toplevel)
     {
@@ -2041,18 +1906,12 @@ void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
         wl_surface_commit(window->wl.surface);
     }
 }
-    else
-    {
-        // TODO: find out how to trigger a resize.
-        // The actual limits are checked in the wl_shell_surface::configure handler.
-    }
-}
 
 void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window,
                                        int numer, int denom)
 {
     // TODO: find out how to trigger a resize.
-    // The actual limits are checked in the wl_shell_surface::configure handler.
+    // The actual limits are checked in the xdg_toplevel::configure handler.
 }
 
 void _glfwPlatformGetFramebufferSize(_GLFWwindow* window,
@@ -2092,18 +1951,10 @@ void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
 }
 
 void _glfwPlatformIconifyWindow(_GLFWwindow* window)
-{
-    if (_glfw.wl.wmBase)
 {
     if (window->wl.xdg.toplevel)
         xdg_toplevel_set_minimized(window->wl.xdg.toplevel);
 }
-    else
-    {
-        _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Wayland: Iconify window not supported on wl_shell");
-    }
-}
 
 void _glfwPlatformRestoreWindow(_GLFWwindow* window)
 {
@@ -2116,11 +1967,7 @@ void _glfwPlatformRestoreWindow(_GLFWwindow* window)
         // There is no way to unset minimized, or even to know if we are
         // minimized, so there is nothing to do here.
     }
-    else if (window->wl.shellSurface)
+
-    {
-        if (window->monitor || window->wl.maximized)
-            wl_shell_surface_set_toplevel(window->wl.shellSurface);
-    }
     _glfwInputWindowMonitor(window, NULL);
     window->wl.maximized = GLFW_FALSE;
 }
@@ -2131,11 +1978,7 @@ void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
     {
         xdg_toplevel_set_maximized(window->wl.xdg.toplevel);
     }
-    else if (window->wl.shellSurface)
+
-    {
-        // Let the compositor select the best output.
-        wl_shell_surface_set_maximized(window->wl.shellSurface, NULL);
-    }
     window->wl.maximized = GLFW_TRUE;
 }
 
@@ -2145,13 +1988,8 @@ void _glfwPlatformShowWindow(_GLFWwindow* window)
     {
         // NOTE: The XDG/shell surface is created here so command-line applications
         //       with off-screen windows do not appear in for example the Unity dock
-        if (_glfw.wl.wmBase)
-        {
         if (!window->wl.xdg.toplevel)
             createXdgSurface(window);
-        }
-        else if (!window->wl.shellSurface)
-            createShellSurface(window);
 
         window->wl.visible = GLFW_TRUE;
         _glfwInputWindowDamage(window);
@@ -2195,8 +2033,6 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
     {
         if (window->wl.xdg.toplevel)
             xdg_toplevel_unset_fullscreen(window->wl.xdg.toplevel);
-        else if (window->wl.shellSurface)
-            wl_shell_surface_set_toplevel(window->wl.shellSurface);
         setIdleInhibitor(window, GLFW_FALSE);
         if (!_glfw.wl.decorationManager)
             createDecorations(window);
@@ -2211,8 +2047,7 @@ int _glfwPlatformWindowFocused(_GLFWwindow* window)
 
 int _glfwPlatformWindowIconified(_GLFWwindow* window)
 {
-    // wl_shell doesn't have any iconified concept, and xdg-shell doesn’t give
+    // xdg-shell doesn’t give any way to request whether a surface is iconified
-    // any way to request whether a surface is iconified.
     return GLFW_FALSE;
 }