ecore_evas/wayland_shm: Fixed window resize.

Using the server_allocation/allocation to determine the resize offset
was not completely precise, and causing the window to not always resize
correctly.

Additionally, calling evas_engine_info_set() on every resize step caused
the window content to blink and resize very slow, because the swap
buffer, swapper, and everything were being destroyed and recreated. Now
only the swapbuf_reconfigure is being called during the resize, which is
way faster.

src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_shm.c

@@ -299,28 +299,14 @@ _ecore_evas_wl_resize(Ecore_Evas *ee, int w, int h)
         if (wdata->win)
           {
              Ecore_Wl_Window *win;
-             Evas_Coord x = 0, y = 0;
              Evas_Engine_Info_Wayland_Shm *einfo;
 
              win = wdata->win;
-             if (win->surface)
-               {
-                  if (win->edges & 4)
-                    x = win->server_allocation.w - win->allocation.w;
-                  if (win->edges & 1)
-                    y = win->server_allocation.h - win->allocation.h;
-               }
-
-             win->edges = 0;
 
              if ((einfo = (Evas_Engine_Info_Wayland_Shm *)evas_engine_info_get(ee->evas)))
-               {
+               einfo->info.edges = win->edges;
-                  printf("Setting Resize Edges: %d %d\n", x, y);
+
-                  einfo->info.edges.x = x;
+             win->edges = 0;
-                  einfo->info.edges.y = y;
-                  if (!evas_engine_info_set(ee->evas, (Evas_Engine_Info *)einfo))
-                    ERR("evas_engine_info_set() for engine '%s' failed.", ee->driver);
-               }
 
              win->server_allocation = win->allocation;
              ecore_wl_window_update_size(wdata->win, w, h);

src/modules/evas/engines/wayland_shm/Evas_Engine_Wayland_Shm.h

@@ -18,10 +18,7 @@ struct _Evas_Engine_Info_Wayland_Shm
 
         unsigned int rotation, depth;
         Eina_Bool destination_alpha : 1;
-        struct 
+        int edges;
-          {
-             int x, y;
-          } edges;
      } info;
 
    /* non-blocking or blocking mode */

src/modules/evas/engines/wayland_shm/evas_engine.c

@@ -9,6 +9,7 @@ typedef struct _Render_Engine Render_Engine;
 
 struct _Render_Engine
 {
+   Evas_Engine_Info_Wayland_Shm *info;
    Outbuf *ob;
    Tilebuf *tb;
 
@@ -237,13 +238,14 @@ eng_setup(Evas *eo_evas, void *einfo)
           }
 
         if (!(re = 
-              _output_engine_setup(info->info.edges.x, info->info.edges.y, 
+              _output_engine_setup(0, 0,
-                                   epd->output.w, epd->output.h, 
+                                   epd->output.w, epd->output.h,
-                                   info->info.rotation, info->info.depth, 
+                                   info->info.rotation, info->info.depth,
-                                   info->info.destination_alpha, 
+                                   info->info.destination_alpha,
-                                   info->info.wl_shm, info->info.wl_surface, 
+                                   info->info.wl_shm, info->info.wl_surface,
                                    try_swap)))
           return 0;
+        re->info = info;
      }
 
    else
@@ -255,13 +257,13 @@ eng_setup(Evas *eo_evas, void *einfo)
         /* we have an existing render engine */
         if (re->ob) re->outbuf_free(re->ob);
 
-        if ((re->ob = evas_swapbuf_setup(info->info.edges.x, 
+        if ((re->ob = evas_swapbuf_setup(0,
-                                         info->info.edges.y, 
+                                         0,
-                                         epd->output.w, epd->output.h, 
+                                         epd->output.w, epd->output.h,
-                                         info->info.rotation, 
+                                         info->info.rotation,
-                                         info->info.depth, 
+                                         info->info.depth,
-                                         info->info.destination_alpha, 
+                                         info->info.destination_alpha,
-                                         info->info.wl_shm, 
+                                         info->info.wl_shm,
                                          info->info.wl_surface)))
           {
              re->outbuf_free = evas_swapbuf_free;
@@ -320,14 +322,23 @@ static void
 eng_output_resize(void *data, int w, int h)
 {
    Render_Engine *re;
+   Evas_Engine_Info_Wayland_Shm *info;
+   int dx = 0, dy = 0;
 
    LOGFN(__FILE__, __LINE__, __FUNCTION__);
 
    if (!(re = (Render_Engine *)data)) return;
 
-   re->outbuf_reconfigure(re->ob, re->ob->x, re->ob->y, w, h, 
+   if (!(info = re->info)) return;
-                          re->ob->rotation, re->ob->depth, 
+
-                          re->ob->priv.destination_alpha);
+   if (info->info.edges & 4)
+     dx = re->ob->w - w;
+   if (info->info.edges & 1)
+     dy = re->ob->h - h;
+
+   re->outbuf_reconfigure(re->ob, dx, dy, w, h,
+                          info->info.rotation, info->info.depth,
+                          info->info.destination_alpha);
    evas_common_tilebuf_free(re->tb);
    if ((re->tb = evas_common_tilebuf_new(w, h)))
      evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);

src/modules/evas/engines/wayland_shm/evas_swapper.c

@@ -17,7 +17,7 @@
 typedef struct _Wl_Buffer Wl_Buffer;
 struct _Wl_Buffer
 {
-   int x, y, w, h;
+   int w, h;
    struct wl_buffer *buffer;
    void *data;
    int offset;
@@ -320,8 +320,6 @@ _evas_swapper_buffer_new(Wl_Swapper *ws, Wl_Buffer *wb)
    /* make sure swapper has a shm */
    if (!ws->shm) return EINA_FALSE;
 
-   wb->x = ws->x;
-   wb->y = ws->y;
    wb->w = ws->w;
    wb->h = ws->h;
 
@@ -421,9 +419,9 @@ _evas_swapper_buffer_put(Wl_Swapper *ws, Wl_Buffer *wb, Eina_Rectangle *rects, u
    /* surface attach */
    if (sent != wb->buffer)
      {
-        wl_surface_attach(ws->surface, wb->buffer, wb->x, wb->y);
+        wl_surface_attach(ws->surface, wb->buffer, ws->x, ws->y);
-        wb->x = 0;
+        ws->x = 0;
-        wb->y = 0;
+        ws->y = 0;
         sent = wb->buffer;
      }