Wayland: much lighter but partial implementation of the "GTK Shell" protocol

Only the middle-button click gesture is implemented which avoids interference
with what libdecor does with right-click and double-click.

1 files changed, 0 insertions, 238 deletions

diff --git a/libdecor/build/fl_libdecor-plugins.c b/libdecor/build/fl_libdecor-plugins.c
index 35565a9e1..1d961dd3d 100644
--- a/libdecor/build/fl_libdecor-plugins.c
+++ b/libdecor/build/fl_libdecor-plugins.c
@@ -31,15 +31,10 @@
 #  define HAVE_GTK 0
 #endif
 
-#if HAVE_GTK
-#  include "gtk-shell-client-protocol.h"
-#endif
-
 #if USE_SYSTEM_LIBDECOR
 #include "../src/libdecor-plugin.h"
 #if HAVE_GTK
 #include <linux/input.h>
-#include "gtk-shell-protocol.c"
 #endif
 
 enum zxdg_toplevel_decoration_v1_mode {
@@ -237,55 +232,6 @@ struct libdecor_frame_gtk {
   struct wl_list link;
 };
 
-#if USE_SYSTEM_LIBDECOR
-struct libdecor_plugin_gtk {
-  struct libdecor_plugin plugin;
-  struct wl_callback *globals_callback;
-  struct wl_callback *globals_callback_shm;
-  struct libdecor *context;
-  struct wl_registry *wl_registry;
-  struct wl_subcompositor *wl_subcompositor;
-  struct wl_compositor *wl_compositor;
-  struct wl_shm *wl_shm;
-  struct wl_callback *shm_callback;
-  bool has_argb;
-  struct wl_list visible_frame_list;
-  struct wl_list seat_list;
-  struct wl_list output_list;
-  char *cursor_theme_name;
-  int cursor_size;
-  int double_click_time_ms;
-};
-
-struct seat {
-  struct libdecor_plugin_gtk *plugin_gtk;
-  char *name;
-  struct wl_seat *wl_seat;
-  struct wl_pointer *wl_pointer;
-  struct wl_touch *wl_touch;
-  struct wl_surface *cursor_surface;
-  struct wl_cursor *current_cursor;
-  int cursor_scale;
-  struct wl_list cursor_outputs;
-  struct wl_cursor_theme *cursor_theme;
-  struct wl_cursor *cursors[8]; // 8 replaces ARRAY_LENGTH(cursor_names)
-  struct wl_cursor *cursor_left_ptr;
-  struct wl_surface *pointer_focus;
-  struct wl_surface *touch_focus;
-  int pointer_x, pointer_y;
-  uint32_t pointer_button_time_stamp;
-  uint32_t touch_down_time_stamp;
-  uint32_t serial;
-  bool grabbed;
-  struct wl_list link;
-};
-
-static bool own_surface(struct wl_surface *surface)
-{
-  return true;
-}
-#endif // USE_SYSTEM_LIBDECOR
-
 #endif // USE_SYSTEM_LIBDECOR || !HAVE_GTK
 
 
@@ -391,187 +337,3 @@ unsigned char *fl_libdecor_titlebar_buffer(struct libdecor_frame *frame,
   }
   return NULL;
 }
-
-
-/* === Beginning of code to add support of GTK Shell to libdecor-gtk === */
-#if HAVE_GTK
-
-static struct gtk_shell1 *gtk_shell = NULL;
-static uint32_t doubleclick_time = 250;
-
-// libdecor's button member of wl_pointer_listener objects
-static void (*decor_pointer_button)(void*, struct wl_pointer *,
-                                    uint32_t ,
-                                    uint32_t ,
-                                    uint32_t ,
-                                    uint32_t);
-
-// FLTK's replacement for button member of wl_pointer_listener objects
-static void fltk_pointer_button(void *data,
-                                struct wl_pointer *wl_pointer,
-                                uint32_t serial,
-                                uint32_t time,
-                                uint32_t button,
-                                uint32_t state) {
-  struct seat *seat = data;
-  struct libdecor_frame_gtk *frame_gtk;
-  if (!seat->pointer_focus || !own_surface(seat->pointer_focus))
-    return;
-
-  frame_gtk = wl_surface_get_user_data(seat->pointer_focus);
-  if (!frame_gtk)
-    return;
-
-  if (button == BTN_MIDDLE && state == WL_POINTER_BUTTON_STATE_PRESSED) {
-    struct gtk_surface1 *gtk_surface = gtk_shell1_get_gtk_surface(gtk_shell,
-                                                  frame_gtk->headerbar.wl_surface);
-    gtk_surface1_titlebar_gesture(gtk_surface, serial,
-                                  seat->wl_seat, GTK_SURFACE1_GESTURE_MIDDLE_CLICK);
-    gtk_surface1_release(gtk_surface);
-    return;
-  } else if (button == BTN_RIGHT && state == WL_POINTER_BUTTON_STATE_PRESSED) {
-    struct gtk_surface1 *gtk_surface = gtk_shell1_get_gtk_surface(gtk_shell,
-                                                  frame_gtk->headerbar.wl_surface);
-    gtk_surface1_titlebar_gesture(gtk_surface, serial,
-                                  seat->wl_seat, GTK_SURFACE1_GESTURE_RIGHT_CLICK);
-    gtk_surface1_release(gtk_surface);
-    return;
-  } else if (button == BTN_LEFT && state == WL_POINTER_BUTTON_STATE_PRESSED) {
-    if (time - seat->pointer_button_time_stamp < doubleclick_time) {
-      seat->pointer_button_time_stamp = 0;
-      struct gtk_surface1 *gtk_surface = gtk_shell1_get_gtk_surface(gtk_shell,
-                                                    frame_gtk->headerbar.wl_surface);
-      gtk_surface1_titlebar_gesture(gtk_surface, serial,
-                                    seat->wl_seat, GTK_SURFACE1_GESTURE_DOUBLE_CLICK);
-      gtk_surface1_release(gtk_surface);
-      return;
-    }
-  }
-  decor_pointer_button(data, wl_pointer, serial, time, button, state);
-}
-
-#if USE_SYSTEM_LIBDECOR
-static struct border_component_gtk *
-get_component_for_surface(struct libdecor_frame_gtk *frame_gtk,
-        const struct wl_surface *surface)
-{
-  if (frame_gtk->shadow.wl_surface == surface)
-    return &frame_gtk->shadow;
-  if (frame_gtk->headerbar.wl_surface == surface)
-    return &frame_gtk->headerbar;
-  return NULL;
-}
-#endif
-
-
-// libdecor's touch_down member of wl_touch_listener objects
-void (*decor_touch_down)(void *data, struct wl_touch *wl_touch, uint32_t serial,
-                         uint32_t time, struct wl_surface *surface, int32_t id,
-                         wl_fixed_t x, wl_fixed_t y);
-
-
-// FLTK's replacement for touch_down member of wl_touch_listener objects
-static void fltk_touch_down(void *data, struct wl_touch *wl_touch, uint32_t serial,
-     uint32_t time, struct wl_surface *surface, int32_t id, wl_fixed_t x, wl_fixed_t y)
-{
-  struct seat *seat = data;
-  struct libdecor_frame_gtk *frame_gtk;
-  if (!surface || !own_surface(surface)) return;
-  frame_gtk = wl_surface_get_user_data(surface);
-  if (!frame_gtk) return;
-  seat->touch_focus = surface;
-  frame_gtk->touch_active = get_component_for_surface(frame_gtk, surface);
-  if (!frame_gtk->touch_active) return;
-  
-  if (frame_gtk->touch_active->type == HEADER &&
-      frame_gtk->hdr_focus.type < HEADER_MIN &&
-      time - seat->touch_down_time_stamp <
-        (uint32_t)frame_gtk->plugin_gtk->double_click_time_ms
-      ) {
-    struct gtk_surface1 *gtk_surface = gtk_shell1_get_gtk_surface(
-                                            gtk_shell, surface);
-    gtk_surface1_titlebar_gesture(gtk_surface, serial, seat->wl_seat,
-                                  GTK_SURFACE1_GESTURE_DOUBLE_CLICK);
-    gtk_surface1_release(gtk_surface);
-  } else {
-    decor_touch_down(data, wl_touch, serial, time, surface, id, x, y);
-  }
-}
-
-
-struct wl_object { // copied from wayland-private.h
-  const struct wl_interface *interface;
-  const void *implementation;
-  uint32_t id;
-};
-
-#endif // HAVE_GTK
-
-
-// replace libdecor's pointer_button by FLTK's
-void use_FLTK_pointer_button(struct libdecor_frame *frame) {
-#if HAVE_GTK
-  static const char *my_plugin = NULL;
-  if (!my_plugin) my_plugin = get_libdecor_plugin_description(frame);
-  if (!my_plugin || strcmp(my_plugin, "GTK3 plugin")) return;
-  static struct wl_pointer_listener *fltk_listener = NULL;
-  if (!gtk_shell || fltk_listener) return;
-  struct libdecor_frame_gtk *lfg = (struct libdecor_frame_gtk *)frame;
-  if (wl_list_empty(&lfg->plugin_gtk->seat_list)) return;
-  struct seat *seat;
-  wl_list_for_each(seat, &lfg->plugin_gtk->seat_list, link) {
-    break;
-  }
-  
-  struct wl_surface *surface = lfg->headerbar.wl_surface;
-  if (surface && !own_surface(surface)) {
-    // occurs if libdecor-gtk.so was dynamically loaded via LIBDECOR_PLUGIN_DIR
-    gtk_shell = NULL;
-    return;
-  }
-  
-  struct wl_object *object = (struct wl_object *)seat->wl_pointer;
-  if (!object) return;
-  struct wl_pointer_listener *decor_listener =
-      (struct wl_pointer_listener*)object->implementation;
-  fltk_listener =
-      (struct wl_pointer_listener*)malloc(sizeof(struct wl_pointer_listener));
-  // initialize FLTK's listener with libdecor's values
-  *fltk_listener = *decor_listener;
-  // memorize libdecor's button cb
-  decor_pointer_button = decor_listener->button;
-  // replace libdecor's button by FLTK's
-  fltk_listener->button = fltk_pointer_button;
-  // replace the pointer listener by a copy whose button member is FLTK's
-  object->implementation = fltk_listener;
-  
-  object = (struct wl_object *)seat->wl_touch;
-  if (object) {
-    struct wl_touch_listener *decor_touch_listener =
-      (struct wl_touch_listener*)object->implementation;
-    struct wl_touch_listener *fltk_touch_listener =
-      (struct wl_touch_listener*)malloc(sizeof(struct wl_touch_listener));
-    // initialize FLTK's touch listener with libdecor's values
-    *fltk_touch_listener = *decor_touch_listener;
-    // memorize libdecor's down cb
-    decor_touch_down = decor_touch_listener->down;
-    // replace libdecor's down by FLTK's
-    fltk_touch_listener->down = fltk_touch_down;
-    // replace the touch listener by a copy whose down member is FLTK's
-    object->implementation = fltk_touch_listener;
-  }
-  
-  // get gnome's double_click_time_ms value
-  doubleclick_time = lfg->plugin_gtk->double_click_time_ms;
-#endif // HAVE_GTK
-}
-
-
-void bind_to_gtk_shell(struct wl_registry *wl_registry, uint32_t id) {
-#if HAVE_GTK
-  gtk_shell = (struct gtk_shell1*)wl_registry_bind(wl_registry, id,
-                                              &gtk_shell1_interface, 5);
-#endif // HAVE_GTK
-}
-
-/* === End of code to add support of GTK Shell to libdecor-gtk === */