project for a (works on my devices) demo

SOURCES/graphics/2d_structs.c

@@ -0,0 +1,63 @@
+#include "./2d_structs.h"
+#include <stdlib.h>
+#include <string.h>
+
+ui_dimensions* ui_dimensions_malloc(){
+	size_t d_size = sizeof( ui_dimensions);
+	ui_dimensions *d = malloc(d_size);
+	memset( d, 0, d_size);
+	return d;
+}
+
+ui_position* ui_position_malloc(){
+	size_t p_size = sizeof( ui_position);
+	ui_position *p = malloc(p_size);
+	memset( p, 0, p_size);
+	return p;
+}
+
+ui_dimensions* ui_dimensions_new( uint16_t w, uint16_t h){
+	size_t d_size = sizeof( ui_dimensions);
+	ui_dimensions *d = malloc(d_size);
+	d->w = w;
+	d->h = h;
+	return d;
+}
+
+ui_position* ui_position_new( uint16_t x, uint16_t y){
+	size_t p_size = sizeof( ui_position);
+	ui_position *p = malloc(p_size);
+	p->x = x;
+	p->y = y;
+	return p;
+}
+
+f_dimensions* f_dimensions_malloc(){
+	size_t d_size = sizeof( f_dimensions);
+	f_dimensions *d = malloc(d_size);
+	memset( d, 0, d_size);
+	return d;
+}
+
+f_position* f_position_malloc(){
+	size_t p_size = sizeof( f_position);
+	f_position *p = malloc(p_size);
+	memset( p, 0, p_size);
+	return p;
+}
+
+f_dimensions* f_dimensions_new( float w, float h){
+	size_t d_size = sizeof( f_dimensions);
+	f_dimensions *d = malloc(d_size);
+	d->w = w;
+	d->h = h;
+	return d;
+}
+
+f_position* f_position_new( float x, float y){
+	size_t p_size = sizeof( f_position);
+	f_position *p = malloc(p_size);
+	p->x = x;
+	p->y = y;
+	return p;
+}

SOURCES/graphics/2d_structs.h

@@ -0,0 +1,36 @@
+#pragma once
+#include <stdint.h>
+
+typedef struct {
+	uint16_t w;
+	uint16_t h;	
+} ui_dimensions;
+
+typedef struct {
+	uint16_t x;
+	uint16_t y;	
+} ui_position;
+
+
+ui_dimensions* ui_dimensions_malloc();
+ui_dimensions* ui_dimensions_new( uint16_t w, uint16_t h);
+
+ui_position* ui_position_malloc();
+ui_position* ui_position_new( uint16_t x, uint16_t y);
+
+typedef struct {
+	float w;
+	float h;	
+} f_dimensions;
+
+typedef struct {
+	float x;
+	float y;	
+} f_position;
+
+
+f_dimensions* f_dimensions_malloc();
+f_dimensions*f_dimensions_new( float w, float h);
+
+f_position* f_position_malloc();
+f_position* f_position_new( float x, float y);

SOURCES/graphics/Makefile

@@ -0,0 +1,126 @@
+include external.mk
+
+GBD=${BD}graphics/
+GS=SOURCES/graphics/
+
+REGISTRY_LISTENERS=${GBD}os/WAYLAND/registry_listeners/wl_output_listener.o ${GBD}os/WAYLAND/registry_listeners/xdg_wm_base_listener.o
+WAYLAND_OBJECTS=${GBD}os/WAYLAND/wl_context.o ${GBD}os/WAYLAND/xdg-shell.o ${REGISTRY_LISTENERS}
+
+OS_GRAPHICS_OBJECTS=${GBD}2d_structs.o ${WAYLAND_OBJECTS} ${GBD}os/EGL/egl_context.o ${GBD}os/EGL/GLES_3_1_compatibility.o
+
+
+GUI_COMPONENT_OBJECTS=${GBD}library/gui_component/gui_component.o ${GBD}library/gui_component/gui_components_list.o ${GBD}library/gui_component/listeners/xdg_surface_listener.o
+WINDOW_OBJECTS=${GBD}library/window/window.o ${GBD}library/window/listeners/xdg_toplevel_listener.o
+LIBRARY_GRAPHICS_OBJECTS=${GUI_COMPONENT_OBJECTS} ${WINDOW_OBJECTS} ${GBD}library/application_context.o
+
+export GRAPHICS_OBJECTS=${OS_GRAPHICS_OBJECTS} ${LIBRARY_GRAPHICS_OBJECTS}
+
+
+
+${GBD}2d_structs.o : ${GS}2d_structs.c ${GS}2d_structs.h
+	${COMPILER} \
+	-o ${GBD}2d_structs.o \
+	-c ${CFLAGS} ${GS}2d_structs.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}os/WAYLAND/wl_context.o : ${GS}os/WAYLAND/wl_context.c ${GS}os/WAYLAND/wl_context.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}os/WAYLAND/wl_context.o \
+	-c ${CFLAGS} ${GS}os/WAYLAND/wl_context.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}os/WAYLAND/xdg-shell.o : ${GS}os/WAYLAND/xdg-shell.c ${GS}os/WAYLAND/xdg-shell.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}os/WAYLAND/xdg-shell.o \
+	-c ${CFLAGS} ${GS}os/WAYLAND/xdg-shell.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}os/WAYLAND/registry_listeners/wl_output_listener.o : ${GS}os/WAYLAND/registry_listeners/wl_output_listener.c ${GS}os/WAYLAND/registry_listeners/wl_output_listener.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}os/WAYLAND/registry_listeners/wl_output_listener.o \
+	-c ${CFLAGS} ${GS}os/WAYLAND/registry_listeners/wl_output_listener.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}os/WAYLAND/registry_listeners/xdg_wm_base_listener.o : ${GS}os/WAYLAND/registry_listeners/xdg_wm_base_listener.c ${GS}os/WAYLAND/registry_listeners/xdg_wm_base_listener.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}os/WAYLAND/registry_listeners/xdg_wm_base_listener.o \
+	-c ${CFLAGS} ${GS}os/WAYLAND/registry_listeners/xdg_wm_base_listener.c \
+	${GLOBAL_COMPILE_CONF}
+
+
+${GBD}os/EGL/egl_context.o : ${GS}os/EGL/egl_context.c ${GS}os/EGL/egl_context.h
+	${COMPILER} \
+	${I_EGL} \
+	${I_WAYLAND} \
+	-o ${GBD}os/EGL/egl_context.o \
+	-c ${CFLAGS} ${GS}os/EGL/egl_context.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}os/EGL/GLES_3_1_compatibility.o : ${GS}os/EGL/GLES_3_1_compatibility.c ${GS}os/EGL/GLES_3_1_compatibility.h
+	${COMPILER} \
+	${I_EGL} \
+	-o ${GBD}os/EGL/GLES_3_1_compatibility.o \
+	-c ${CFLAGS} ${GS}os/EGL/GLES_3_1_compatibility.c \
+	${GLOBAL_COMPILE_CONF}
+
+
+
+
+
+
+
+${GBD}library/gui_component/gui_component.o : ${GS}library/gui_component/gui_component.c ${GS}library/gui_component/gui_component.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}library/gui_component/gui_component.o \
+	-c ${CFLAGS} ${GS}library/gui_component/gui_component.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}library/gui_component/gui_components_list.o : ${GS}library/gui_component/gui_components_list.c ${GS}library/gui_component/gui_components_list.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}library/gui_component/gui_components_list.o \
+	-c ${CFLAGS} ${GS}library/gui_component/gui_components_list.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}library/gui_component/listeners/xdg_surface_listener.o : ${GS}library/gui_component/listeners/xdg_surface_listener.c ${GS}library/gui_component/listeners/xdg_surface_listener.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}library/gui_component/listeners/xdg_surface_listener.o \
+	-c ${CFLAGS} ${GS}library/gui_component/listeners/xdg_surface_listener.c \
+	${GLOBAL_COMPILE_CONF}
+
+
+
+
+
+${GBD}library/window/window.o : ${GS}library/window/window.c ${GS}library/window/window.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	${I_EGL} \
+	-o ${GBD}library/window/window.o \
+	-c ${CFLAGS} ${GS}library/window/window.c \
+	${GLOBAL_COMPILE_CONF}
+
+${GBD}library/window/listeners/xdg_toplevel_listener.o : ${GS}library/window/listeners/xdg_toplevel_listener.c ${GS}library/window/listeners/xdg_toplevel_listener.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	-o ${GBD}library/window/listeners/xdg_toplevel_listener.o \
+	-c ${CFLAGS} ${GS}library/window/listeners/xdg_toplevel_listener.c \
+	${GLOBAL_COMPILE_CONF}
+
+
+
+
+# -I ./ è una porcata clamorosa
+${GBD}library/application_context.o : ${GS}library/application_context.c ${GS}library/application_context.h
+	${COMPILER} \
+	${I_WAYLAND} \
+	${I_EGL} \
+	-o ${GBD}library/application_context.o \
+	-c ${CFLAGS} ${GS}library/application_context.c \
+	${GLOBAL_COMPILE_CONF}

SOURCES/graphics/library/application_context.c

@@ -0,0 +1,83 @@
+#include "application_context.h"
+
+#include "window/window.h"
+
+#include "../os/WAYLAND/wl_context.h"
+#include "../os/EGL/egl_context.h"
+#include "../os/EGL/GLES_3_1_compatibility.h"
+#include <wayland-egl.h>
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+application_context* application_context_malloc(){
+	application_context *app = malloc( sizeof( application_context));
+	return app;
+}
+
+application_context* application_context_new( const char *title){
+	wl_context *wl;
+	egl_context *egl;
+	gui_component *win;
+	application_context *app;
+
+	app = application_context_malloc();
+	/* get the builders and the display connection */
+	wl = wl_context_new();
+	app->w_context = wl;
+
+    fprintf(stderr, "created WL_CONTEXT\n");
+
+
+	/* builds the minimal for a running */
+	win = window_new( 
+		title, 
+		ui_dimensions_new(
+			wl_context_get(GLUT_SCREEN_WIDTH), 
+			wl_context_get(GLUT_SCREEN_HEIGHT)
+		), 
+		app
+	);
+
+    fprintf(stderr, "CREATED WINDOW\n");
+
+	/* ??? allocates the required struct for binding a buffer to the wl_surface of the window's toplevel */
+	app->win = win;
+	app->running = 1;
+
+	window_gui_enrichment *win_x = ( window_gui_enrichment* ) win->specialization;
+	win_x->egl_window = wl_egl_window_create( win->graphics->surface, win->graphics->dimensions->w, win->graphics->dimensions->h);
+
+	/* EGL_NO_SURFACE */
+	if (NULL == win_x->egl_window) {
+	    fprintf(stderr, "Couldn't create EGL window\n");
+	    exit(1);
+  	}
+
+	/* gets the context for GLES2 graphics API */
+	egl = egl_context_new( wl->display);
+	app->e_context = egl;
+
+	win_x->egl_surface = eglCreateWindowSurface(
+		egl->display,
+		egl->config,
+		(EGLNativeWindowType) win_x->egl_window, 
+		NULL
+	);
+	if( EGL_NO_SURFACE == win_x->egl_surface) {
+		fprintf(stderr, "Couldn't create EGL surface\n");
+		printEGLError();
+
+		exit(EXIT_FAILURE);
+	}
+
+	if( ! eglMakeCurrent(egl->display, win_x->egl_surface, win_x->egl_surface, egl->context)) {
+		fprintf(stderr, "Couldn't make EGL context current\n");
+		exit(EXIT_FAILURE);
+	}
+
+	GLES_3_1_compatibility_init();
+
+	return app;
+}

SOURCES/graphics/library/application_context.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "../os/WAYLAND/wl_context.h"
+#include "../os/EGL/egl_context.h"
+
+#include "gui_component/gui_component.h"
+
+typedef struct {
+	wl_context *w_context;
+	egl_context *e_context;
+	gui_component *win;
+
+	uint8_t running;
+} application_context;
+
+application_context* application_context_malloc();
+
+application_context* application_context_new( const char *title);

SOURCES/graphics/library/gui_component/gui_component.c

@@ -0,0 +1,87 @@
+#include "gui_component.h"
+#include "listeners/xdg_surface_listener.h"
+
+#include <stdlib.h>
+
+/* 
+	listener to be bound on XDG surfaces
+
+	the only event declared by the xdg_surface is the "configure" one
+	indicates the hint for the client to update the arrangement of surfaces ( i.e. change of resolution )
+*/
+const struct xdg_surface_listener surface_listener = {
+	surface_configure
+};
+
+gui_component_graphics* gui_component_graphics_new(
+	ui_position *pos,
+	ui_dimensions *dim,
+	surface_builders *builders
+){
+	gui_component_graphics *g = malloc( sizeof( gui_component_graphics));
+	g->dimensions = dim;
+	g->position = pos;
+
+	g->surface = wl_compositor_create_surface( builders->compositor);
+	g->xdg_surface = xdg_wm_base_get_xdg_surface( builders->xdg_wm_base, g->surface);
+	xdg_surface_add_listener( g->xdg_surface, &surface_listener, NULL);
+
+	return g;
+}
+
+gui_component* gui_component_new_begin(
+	gui_component *parent,
+	ui_position *pos,
+	ui_dimensions *dim,
+	void (*draw_callback) ( gui_component*, int),
+	void (*resize_callback) ( gui_component*, resize_event*),
+	void (*input_callback) ( gui_component*, resize_event*),
+	surface_builders *builders
+){
+	gui_component* c = malloc( sizeof( gui_component));
+
+	c->specialization = NULL;
+	c->graphics = gui_component_graphics_new( pos, dim, builders);
+	c->draw_callback = draw_callback;
+	
+	if( parent){
+		gui_component_add_child( parent, c);
+	}
+	
+	c->children = gui_components_list_new();
+	return c;
+}
+
+void gui_component_new_end( gui_component* toComplete){
+	/*
+		must be called at the end of the configuration
+	*/
+	wl_surface_commit( toComplete->graphics->surface);
+
+}
+
+
+void gui_component_add_child( gui_component *parent, gui_component *child){
+	/* missing args */
+	if( ! parent || ! child){
+	
+	}
+	
+	/* components cannot be moved around at the moment, plug once and bye */
+	if( child->parent){
+	}
+	
+	child->parent = parent;
+	gui_components_list_add( parent->children, child);
+}
+
+void child_draw( gui_component* child, void *extra){
+	int *casted = (int*) extra;
+	int deltaTime = *casted;
+	gui_component_draw( child, deltaTime);
+}
+
+void gui_component_draw( gui_component *c, int deltaTime){
+	c->draw_callback( c, deltaTime);
+	gui_components_list_foreach( c->children, child_draw, (void*) &deltaTime);
+}

SOURCES/graphics/library/gui_component/gui_component.h

@@ -0,0 +1,72 @@
+#pragma once
+
+#include "../../os/WAYLAND/wl_context.h"
+#include "../../2d_structs.h"
+
+#include "gui_components_list.h"
+
+
+typedef struct {
+	int type;
+} input_event;
+
+typedef struct {
+	int w;
+	int h;
+} resize_event;
+
+typedef struct {
+	ui_dimensions *dimensions;
+	ui_position *position;
+
+	struct wl_surface *surface;
+	struct xdg_surface *xdg_surface;
+} 
+gui_component_graphics;
+
+typedef struct gui_component_raw {
+	void ( *draw_callback) ( struct gui_component_raw*, int);
+	void ( *resize_callback) ( struct gui_component_raw*, resize_event*);
+	void ( *input_callback) ( struct gui_component_raw*, resize_event*);
+
+	struct gui_component_raw *parent;
+	struct gui_components_list_raw *children;
+
+	gui_component_graphics *graphics;
+	
+	void *specialization;
+}
+gui_component;
+
+gui_component_graphics* gui_component_graphics_new(
+	ui_position *pos,
+	ui_dimensions *dim,
+	surface_builders *builders
+);
+
+/* called for initializing common configs */
+gui_component* gui_component_new_begin(
+	gui_component *parent,
+	ui_position *pos,
+	ui_dimensions *dim,
+	void (*draw_callback) ( gui_component*, int),
+	void (*resize_callback) ( gui_component*, resize_event*),
+	void (*input_callback) ( gui_component*, resize_event*),
+	surface_builders *builders
+);
+
+/* must be called after specialized init for completing the configuration */
+void gui_component_new_end( gui_component* toComplete);
+
+void gui_component_add_child( gui_component *parent, gui_component *child);
+
+void gui_component_draw( gui_component *c, int deltaTime);
+
+void gui_component_input_event( gui_component *c, input_event *e);
+
+void gui_component_resize_event( gui_component *c, resize_event *e);
+/*
+	draw callback
+	input callback
+	resize callback
+*/

SOURCES/graphics/library/gui_component/gui_components_list.c

@@ -0,0 +1,28 @@
+#include "gui_components_list.h"
+
+#include <stdlib.h>
+
+gui_components_list* gui_components_list_new(){
+	gui_components_list *l = malloc( sizeof( gui_components_list));
+	l->count = 0;
+	TAILQ_INIT(&( l->queue));
+	return l;
+
+}
+
+void gui_components_list_add( gui_components_list* list, gui_component *toAdd){
+	gui_components_list_entry *entry = malloc( sizeof( gui_components_list_entry));
+	entry->data = toAdd;
+
+	TAILQ_INSERT_TAIL( &(list->queue), entry, gui_components_list_entries);
+ 	list->count++;
+}
+
+void gui_components_list_foreach( gui_components_list* list, void ( *toRun) ( gui_component*, void*), void* extra){
+	gui_components_list_head *headp = &( list->queue);
+	gui_components_list_entry *current;
+
+	TAILQ_FOREACH( current, headp, gui_components_list_entries){
+		toRun( current->data, extra);
+	}
+}

SOURCES/graphics/library/gui_component/gui_components_list.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include "gui_component.h"
+
+#include <sys/queue.h>
+
+/*
+typedef struct AAA_RAW {
+	void *data;
+	TAILQ_ENTRY(AAA_RAW) AAAs; // Singly linked List
+} AAA;
+
+
+
+typedef TAILQ_HEAD(BBB_RAW, AAA_RAW) BBB;
+
+typedef struct {
+	BBB queue;
+	int count;
+} CCC;
+*/
+
+
+typedef struct gui_components_list_entry_raw {
+	struct gui_component_raw *data;
+	TAILQ_ENTRY(gui_components_list_entry_raw) gui_components_list_entries; /* Singly linked List. */
+} gui_components_list_entry;
+
+typedef TAILQ_HEAD(gui_components_list_head_raw, gui_components_list_entry_raw) gui_components_list_head;
+
+typedef struct gui_components_list_raw {
+	gui_components_list_head queue;
+	int count;
+}
+gui_components_list;
+
+gui_components_list* gui_components_list_new();
+
+void gui_components_list_add( gui_components_list *list, struct gui_component_raw *toAdd);
+
+void gui_components_list_foreach( gui_components_list *list, void (*toRun) ( struct gui_component_raw*, void*), void *extra);

SOURCES/graphics/library/gui_component/listeners/xdg_surface_listener.c

@@ -0,0 +1,16 @@
+#include "xdg_surface_listener.h"
+
+/******************************/
+/********XDG surface **********/
+/******************************/
+
+/* listener bound to the various xdg_surfaces for listening to "configure" events
+	the client should rearrange its surfaces to accomodate the new state
+	the client should answer to (ACK) the event
+*/
+void surface_configure(void *data, struct xdg_surface *xdg_surface,
+				uint32_t serial) {
+	(void) data;
+
+	xdg_surface_ack_configure(xdg_surface, serial);
+}

SOURCES/graphics/library/gui_component/listeners/xdg_surface_listener.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "../../../os/WAYLAND/xdg-shell.h"
+
+void surface_configure(
+	void *data, 
+	struct xdg_surface *xdg_surface,
+	uint32_t serial
+);

SOURCES/graphics/library/panel/panel.c

@@ -0,0 +1,7 @@
+gui_component* panel_new(
+	gui_component *parent,
+	ui_position *pos,
+	ui_dimensions *dim
+){
+
+}

SOURCES/graphics/library/panel/panel.h

@@ -0,0 +1,7 @@
+#pragma once
+
+gui_component* panel_new(
+	gui_component *parent,
+	ui_position *pos,
+	ui_dimensions *dim
+);

SOURCES/graphics/library/window/listeners/xdg_toplevel_listener.c

@@ -0,0 +1,62 @@
+#include "xdg_toplevel_listener.h"
+#include "../window.h"
+#include "../../application_context.h"
+
+#include <wayland-egl.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+/******************************/
+/********XDG Toplevel**********/
+/******************************/
+
+/* listener bound to the toplevel surface
+	the toplevel may raise a "configure" event, which hints the client about reconfiguring its state
+
+	here we propagate the new width and height to the EGL window ( probably for readjusting buffers )
+*/
+void toplevel_configure(
+	void *data, 
+	struct xdg_toplevel *xdg_toplevel,
+	int32_t width, 
+	int32_t height, 
+	struct wl_array *states
+) {
+	(void) states;
+	gui_component *comp = data;
+	
+	if( ! comp){
+		fprintf(stderr, "inconsistency during toplevel configure : no payload\n");
+		exit(EXIT_FAILURE);
+	}
+	
+	window_gui_enrichment *win = (window_gui_enrichment*) comp->specialization;
+
+	if( ! win || win->xdg_toplevel != xdg_toplevel){
+		fprintf(stderr, "inconsistency during toplevel configure\n");
+		fprintf(stderr, "window->xdg_toplevel %p\nxdg_toplevel %p\n", 
+			(void*) win->xdg_toplevel, 
+			(void*) xdg_toplevel
+		);
+		exit(EXIT_FAILURE);
+	}
+
+	if(!width && !height) return;
+
+	if( comp->graphics->dimensions->w != width || comp->graphics->dimensions->h != height) {
+		comp->graphics->dimensions->w = width;
+		comp->graphics->dimensions->h = height;
+
+		wl_egl_window_resize(win->egl_window, width, height, 0, 0);
+		wl_surface_commit(comp->graphics->surface);
+	}
+}
+
+void toplevel_close( void *data, struct xdg_toplevel *xdg_toplevel) {
+	(void) xdg_toplevel;
+
+	application_context *app = data;
+
+	app->running = 0;
+}

SOURCES/graphics/library/window/listeners/xdg_toplevel_listener.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "../../../os/WAYLAND/xdg-shell.h"
+
+/******************************/
+/********XDG Toplevel**********/
+/******************************/
+
+/* listener bound to the toplevel surface
+	the toplevel may raise a "configure" event, which hints the client about reconfiguring its state
+
+	here we propagate the new width and height to the EGL window ( probably for readjusting buffers )
+*/
+void toplevel_configure(
+	void *data, 
+	struct xdg_toplevel *xdg_toplevel,
+	int32_t width, 
+	int32_t height, 
+	struct wl_array *states
+);
+
+void toplevel_close( void *data, struct xdg_toplevel *xdg_toplevel);

SOURCES/graphics/library/window/window.c

@@ -0,0 +1,80 @@
+#include "window.h"
+#include "listeners/xdg_toplevel_listener.h"
+
+#include "../../os/WAYLAND/xdg-shell.h"
+
+#include <wayland-egl.h>
+
+#include <GLES2/gl2.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+const struct xdg_toplevel_listener toplevel_listener = {
+	toplevel_configure,
+	toplevel_close
+};
+
+/******************************/
+/************APIs**************/
+/******************************/
+
+window_gui_enrichment *window_gui_enrichment_new(
+	struct xdg_surface *xdg_surface,
+	const char *title,
+	application_context *ctx
+){
+	window_gui_enrichment *win;
+
+	win->egl_window = NULL;
+	win->egl_surface = NULL;
+	win->ctx = ctx;
+
+	win->xdg_toplevel = xdg_surface_get_toplevel( xdg_surface);
+	xdg_toplevel_set_title( win->xdg_toplevel, title);
+	xdg_toplevel_add_listener( win->xdg_toplevel, &toplevel_listener, win);
+
+	return win;
+}
+
+void swapBuffers( application_context *app){
+
+	window_gui_enrichment *win = (window_gui_enrichment*) app->win->specialization;
+	wl_display_dispatch_pending(app->w_context->display);
+	eglSwapBuffers( app->e_context->display, win->egl_surface);
+}
+
+
+void draw_callback( gui_component* toDraw, int deltaTime){
+	glClearColor(1, 0, 0, 0);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	/* should iterate on all the children */
+
+	window_gui_enrichment *win = toDraw->specialization;
+	swapBuffers( win->ctx);
+}
+
+gui_component* window_new(
+	const char *title, 
+	ui_dimensions *dim, 
+	application_context *app
+){
+	void (*resize_callback) ( gui_component*, resize_event*) = 0;
+	void (*input_callback) ( gui_component*, resize_event*) = 0;
+	
+	fprintf(stderr, "WINDOW NEW\n");
+
+	gui_component *c = gui_component_new_begin( NULL, ui_position_new(0, 0), dim, draw_callback, resize_callback, input_callback, app->w_context->builders );
+
+    fprintf(stderr, "WINDOW DID GUI_COMP_NEW\n");
+
+	window_gui_enrichment *spec = window_gui_enrichment_new( c->graphics->xdg_surface, title, app);
+	c->specialization = (void*) spec;
+
+    fprintf(stderr, "WINDOW DID ENRICHMENT NEW\n");
+
+
+	gui_component_new_end( c);
+	return c;
+}

SOURCES/graphics/library/window/window.h

@@ -0,0 +1,32 @@
+#pragma once
+#include "../gui_component/gui_component.h"
+
+#include "../application_context.h"
+
+#include <EGL/egl.h>
+#include "../../os/WAYLAND/wl_context.h"
+#include "../../2d_structs.h"
+#include "../../os/WAYLAND/xdg-shell.h"
+
+
+typedef struct {
+	struct xdg_toplevel *xdg_toplevel;
+	struct wl_egl_window *egl_window;
+	EGLSurface *egl_surface;
+	
+	application_context *ctx;
+} 
+window_gui_enrichment;
+
+window_gui_enrichment *window_gui_enrichment_new(
+	struct xdg_surface *xdg_surface,
+	const char *title,
+	application_context *ctx
+);
+
+/* the toplevel listener registration callback offers a void* arg for passing data inside the callback (our app state in this case, waiting for narrowing) */
+gui_component* window_new( 
+	const char *title, 
+	ui_dimensions *dim, 
+	application_context *ctx
+);

SOURCES/graphics/os/EGL/GLES_3_1_compatibility.c

@@ -0,0 +1,33 @@
+#include "GLES_3_1_compatibility.h"
+
+/* fails at link time, 
+resorting to eglGetProcAddress
+
+#define GL_GLEXT_PROTOTYPES 1
+#include <GLES2/gl2ext.h>
+*/
+
+#include <EGL/egl.h>
+
+PFNGLGENVERTEXARRAYSOESPROC glGenVertexArraysOES;
+PFNGLBINDVERTEXARRAYOESPROC glBindVertexArrayOES;
+PFNGLDRAWBUFFERSEXTPROC glDrawBuffersEXT;
+
+void glGenVertexArrays( GLuint n, GLuint *arrays_ptr) {
+	glGenVertexArraysOES( n, arrays_ptr);
+}
+
+void glBindVertexArray( GLuint array_ptr) {
+	glBindVertexArrayOES( array_ptr);
+}
+
+/* https://registry.khronos.org/OpenGL/extensions/OES/OES_framebuffer_object.txt */
+void glDrawBuffers( GLsizei n,GLenum *buffers_ptr) {
+	glDrawBuffersEXT( n, buffers_ptr);
+}
+
+void GLES_3_1_compatibility_init(){
+	glGenVertexArraysOES = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES");
+	glBindVertexArrayOES = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES");
+	glDrawBuffersEXT = (PFNGLDRAWBUFFERSEXTPROC)eglGetProcAddress("glDrawBuffersEXT");
+}

SOURCES/graphics/os/EGL/GLES_3_1_compatibility.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <GLES2/gl2.h>
+
+/* fails at link time, 
+resorting to eglGetProcAddress
+
+#define GL_GLEXT_PROTOTYPES 1
+*/
+#include <GLES2/gl2ext.h>
+
+/* aarch64-linux-gnu/include/math.h already defines it */
+#ifndef M_PI
+#define M_PI	3.14159265358979323846264338327950288
+#endif
+
+/* GLES2 provides it as an extension */
+#ifndef GL_DEPTH24_STENCIL8
+#define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
+#endif
+
+#ifndef GL_DEPTH_STENCIL_ATTACHMENT
+#define GL_DEPTH_STENCIL_ATTACHMENT GL_DEPTH_STENCIL_OES
+#endif
+
+#ifndef GL_DRAW_FRAMEBUFFER
+#define GL_DRAW_FRAMEBUFFER GL_DRAW_BUFFER0_EXT
+#endif
+
+void glGenVertexArrays( GLuint n, GLuint *arrays_ptr);
+
+void glBindVertexArray( GLuint array_ptr);
+
+void glDrawBuffers( GLsizei n,GLenum *buffers_ptr);
+
+void GLES_3_1_compatibility_init();

SOURCES/graphics/os/EGL/egl_context.c

@@ -0,0 +1,138 @@
+#include "egl_context.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+void printEGLError(){
+	EGLint errorCode = eglGetError();
+	switch (errorCode){
+		case EGL_SUCCESS:
+			printf("EGL_SUCCESS : The last function succeeded without error.\n");
+		break;
+		case EGL_NOT_INITIALIZED:
+			printf("EGL_NOT_INITIALIZED : EGL is not initialized, or could not be initialized, for the specified EGL display connection.\n");
+		break;
+		case EGL_BAD_ACCESS:
+			printf("EGL_BAD_ACCESS : EGL cannot access a requested resource (for example a context is bound in another thread).\n");
+		break;
+		case EGL_BAD_ALLOC:
+			printf("EGL_BAD_ALLOC : EGL failed to allocate resources for the requested operation.\n");
+		break;
+		case EGL_BAD_ATTRIBUTE:
+			printf("EGL_BAD_ATTRIBUTE : An unrecognized attribute or attribute value was passed in the attribute list.\n");
+		break;
+		case EGL_BAD_CONTEXT:
+			printf("EGL_BAD_CONTEXT : An EGLContext argument does not name a valid EGL rendering context.\n");
+		break;
+		case EGL_BAD_CONFIG:
+			printf("EGL_BAD_CONFIG : An EGLConfig argument does not name a valid EGL frame buffer configuration.\n");
+		break;
+		case EGL_BAD_CURRENT_SURFACE:
+			printf("EGL_BAD_CURRENT_SURFACE : The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid.\n");
+		break;
+		case EGL_BAD_DISPLAY:
+			printf("EGL_BAD_DISPLAY : An EGLDisplay argument does not name a valid EGL display connection.\n");
+		break;
+		case EGL_BAD_SURFACE:
+			printf("EGL_BAD_SURFACE : An EGLSurface argument does not name a valid surface (window, pixel buffer or pixmap) configured for GL rendering.\n");
+		break;
+		case EGL_BAD_MATCH:
+			printf("EGL_BAD_MATCH : Arguments are inconsistent (for example, a valid context requires buffers not supplied by a valid surface).\n");
+		break;
+		case EGL_BAD_PARAMETER:
+			printf("EGL_BAD_PARAMETER : One or more argument values are invalid.\n");
+		break;
+		case EGL_BAD_NATIVE_PIXMAP:
+			printf("EGL_BAD_NATIVE_PIXMAP : A NativePixmapType argument does not refer to a valid native pixmap.\n");
+		break;
+		case EGL_BAD_NATIVE_WINDOW:
+			printf("EGL_BAD_NATIVE_WINDOW : A NativeWindowType argument does not refer to a valid native window.\n");
+		break;
+		case EGL_CONTEXT_LOST:
+			printf("EGL_CONTEXT_LOST : A power management event has occurred. The application must destroy all contexts and reinitialise OpenGL ES state and objects to continue rendering.\n");
+		break; 
+		default:
+			printf("UNKNOWN : wtf dude\n");
+	}
+}
+
+egl_context *egl_context_malloc() {
+	return malloc( sizeof( egl_context));
+}
+
+/*
+	wl_display, wl_surface, w, h
+	egl_window CREATE
+	egl_display CREATE
+	egl_config FIND
+
+	egl_surface CREATE
+	
+	egl_context CREATE
+*/
+egl_context *egl_context_new( struct wl_display *display) {
+	EGLint major;
+	EGLint minor;
+	EGLint num_configs;
+
+	EGLint lastEGLOp;
+	/*
+	replaced EGL_OPENGL_BIT with EGL_OPENGL_ES2_BIT 
+	*/
+	EGLint attribs[] = {
+		EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+		EGL_NONE
+	};
+
+	egl_context *e = egl_context_malloc();
+
+	e->display = eglGetDisplay((EGLNativeDisplayType) display);
+
+	if(EGL_NO_DISPLAY == e->display) {
+		fprintf(stderr, "Couldn't get EGL display\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if( EGL_TRUE != eglInitialize(e->display, &major, &minor)) {
+		fprintf(stderr, "Couldnt initialize EGL\n");
+		exit(EXIT_FAILURE);
+	}
+
+
+	/* null buffer for querying the count*/
+	lastEGLOp = eglChooseConfig( e->display, attribs, NULL, 1, &num_configs);
+	if( EGL_TRUE != lastEGLOp) {
+		exit(EXIT_FAILURE);
+	}
+	fprintf(stderr, "found %d matching EGL configurations\n", num_configs);
+	
+	EGLConfig *all_the_configs = malloc( num_configs * sizeof( EGLConfig));
+
+	/* was &e->config but broken */
+	lastEGLOp = eglChooseConfig( e->display, attribs, all_the_configs, num_configs, &num_configs);
+	if( EGL_TRUE != lastEGLOp) {
+		fprintf(stderr, "CouldnÄt find matching EGL config\n");
+		exit(EXIT_FAILURE);
+	}
+
+	e->config = all_the_configs[0];
+
+	/* added from 
+		https://stackoverflow.com/questions/25843368/glgetstringgl-version-returns-opengl-es-cm-1-1-but-my-phone-supports-opengl
+	*/
+	const EGLint context_attrib_list[] = { 
+        	// request a context using Open GL ES 2.0
+        	EGL_CONTEXT_CLIENT_VERSION, 2, 
+        	EGL_NONE 
+	};
+
+	/*thanks to the dudes of stackoverflow for explaining how the attrib_list works*/
+	e->context = eglCreateContext(e->display, e->config, EGL_NO_CONTEXT, context_attrib_list);
+	if( EGL_NO_CONTEXT == e->context) {
+		fprintf(stderr, "Couldn't create EGL context\n");
+		printEGLError();
+		exit(EXIT_FAILURE);
+	}
+
+	return e;
+}

SOURCES/graphics/os/EGL/egl_context.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <wayland-client-core.h>
+#include <EGL/egl.h>
+
+typedef struct {
+	EGLDisplay *display;
+	EGLConfig *config;
+	EGLContext *context;
+} egl_context;
+
+void printEGLError();
+
+egl_context* egl_context_malloc();
+
+egl_context* egl_context_new( struct wl_display *display);

SOURCES/graphics/os/WAYLAND/registry_listeners/wl_output_listener.c

@@ -0,0 +1,30 @@
+#include "wl_output_listener.h"
+
+// Callback for wl_output::mode events (resolutions)
+void output_mode(void *data, struct wl_output *output,
+                        uint32_t flags, int32_t width, int32_t height,
+                        int32_t refresh) {
+    const char *mode_type = "";
+    if (flags & WL_OUTPUT_MODE_CURRENT) mode_type = " (current)";
+    if (flags & WL_OUTPUT_MODE_PREFERRED) mode_type = " (preferred)";
+ 
+    printf("Mode: %dx%d @ %.2f Hz%s\n",
+           width, height, refresh / 1000.0, mode_type);
+}
+ 
+// Callback for wl_output::geometry events (physical display info)
+void output_geometry(void *data, struct wl_output *output,
+                           int32_t x, int32_t y, int32_t physical_width,
+                           int32_t physical_height, int32_t subpixel,
+                           const char *make, const char *model,
+                           int32_t transform) {
+    printf("Output: %s %s (physical size: %dx%d mm)\n", make, model,
+           physical_width, physical_height);
+}
+ 
+// Callback for wl_output::done events (end of output info)
+void output_done(void *data, struct wl_output *output) {}
+ 
+// Callback for wl_output::scale events (HiDPI scaling)
+void output_scale(void *data, struct wl_output *output, int32_t scale) {}
+ 

SOURCES/graphics/os/WAYLAND/registry_listeners/wl_output_listener.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <wayland-client.h>
+#include <stdio.h>
+
+// Callback for wl_output::mode events (resolutions)
+void output_mode(
+	void *data, 
+	struct wl_output *output,
+	uint32_t flags, 
+	int32_t width, 
+	int32_t height,
+	int32_t refresh
+);
+ 
+// Callback for wl_output::geometry events (physical display info)
+void output_geometry(
+	void *data, 
+	struct wl_output *output,
+	int32_t x, 
+	int32_t y, 
+	int32_t physical_width,
+	int32_t physical_height, 
+	int32_t subpixel,
+	const char *make, 
+	const char *model,
+	int32_t transform
+);
+ 
+// Callback for wl_output::done events (end of output info)
+void output_done(
+	void *data, 
+	struct wl_output *output
+);
+ 
+// Callback for wl_output::scale events (HiDPI scaling)
+void output_scale(
+	void *data, 
+	struct wl_output *output, 
+	int32_t scale
+);

SOURCES/graphics/os/WAYLAND/registry_listeners/xdg_wm_base_listener.c

@@ -0,0 +1,14 @@
+#include "xdg_wm_base_listener.h"
+
+/*
+	listener on the XDG wm_base "ping" event
+	the client must respond fairly soon to the event with a "pong" request or the client may be deemed unresponsive
+*/
+void wm_ping(
+	void *data, 
+	struct xdg_wm_base *xdg_wm_base,
+	uint32_t serial
+) {
+	(void) data;
+	xdg_wm_base_pong(xdg_wm_base, serial);
+}

SOURCES/graphics/os/WAYLAND/registry_listeners/xdg_wm_base_listener.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "../xdg-shell.h"
+
+void wm_ping(
+	void *data, 
+	struct xdg_wm_base *xdg_wm_base,
+	uint32_t serial
+);

SOURCES/graphics/os/WAYLAND/wl_context.c

@@ -0,0 +1,139 @@
+#include "wl_context.h"
+
+#include "registry_listeners/wl_output_listener.h"
+#include "registry_listeners/xdg_wm_base_listener.h"
+
+#include <wayland-client.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+
+static const struct wl_output_listener output_listener = {
+    .geometry = output_geometry,
+    .mode = output_mode,
+    .done = output_done,
+    .scale = output_scale,
+};
+
+static const struct xdg_wm_base_listener wm_base_listener = {
+	wm_ping
+};
+
+/***************************************/
+/***************************************/
+/**********REGISTRY CALLBACKS***********/
+/***************************************/
+/***************************************/
+
+/*
+	listener on the registry object's add events
+	used for picking the singletons to COMPOSITOR, SUBCOMPOSITOR and XDG_WM_BASE
+*/
+void global_registry(
+	void *data, 
+	struct wl_registry *wl_registry,
+	uint32_t name, 
+	const char *interface, 
+	uint32_t version
+) {
+	surface_builders *builders = data;
+
+	printf("REGISTRY EVENT\nname: %s\nversion: %d\n", interface, version);
+
+	/*
+	printf("%s\n%s\n%s\n\n", wl_compositor_interface.name,  wl_subcompositor_interface.name, xdg_wm_base_interface.name);
+	*/
+
+	if(!strcmp(interface, wl_compositor_interface.name)) {
+		printf("FOUND COMP\n");
+		builders->compositor = wl_registry_bind(
+			wl_registry, 
+			name,
+			&wl_compositor_interface, 
+			version
+		);
+	}
+	else if(!strcmp(interface, wl_subcompositor_interface.name)){
+		printf("FOUND SUBCOMP\n");
+		builders->subcompositor = wl_registry_bind(
+			wl_registry, 
+			name,
+			&wl_subcompositor_interface, 
+			version
+		);
+	}
+	else if(!strcmp(interface, xdg_wm_base_interface.name)) {
+		printf("FOUND XDG\n");
+		builders->xdg_wm_base = wl_registry_bind(
+			wl_registry, 
+			name,
+			&xdg_wm_base_interface, 
+			version
+		);
+	}
+
+	if (strcmp(interface, "wl_output") == 0) {
+		printf("FOUND OUTPUT\n");
+        builders->output = wl_registry_bind(
+        	wl_registry, 
+        	name,
+			&wl_output_interface, 
+			1
+		);
+        wl_output_add_listener( builders->output, &output_listener, NULL);
+    }
+}
+
+/*
+	listener on the registry object's remove events
+	it is an error the body being unimplemented ( when an interface becomes unavailable it could mean that the physical device has been disconnected )
+*/
+void global_remove(void *data, struct wl_registry *wl_registry,
+			    uint32_t name) {
+	(void) data;
+	(void) wl_registry;
+	(void) name;
+}
+
+static const struct wl_registry_listener registry_listener = {
+	global_registry,
+	global_remove
+};
+
+wl_context* wl_context_new() {
+	wl_context *w = malloc( sizeof( wl_context));
+	w->display = wl_display_connect(NULL);
+	if(! w->display) {
+		fprintf(stderr, "Couldn't connect to wayland display\n");
+		exit(EXIT_FAILURE);
+	}
+
+	w->builders = malloc( sizeof( surface_builders));
+	w->registry = wl_display_get_registry( w->display);
+	wl_registry_add_listener( w->registry, &registry_listener, w->builders);
+	wl_display_roundtrip( w->display);
+	if( ! w->builders->compositor || ! w->builders->subcompositor || ! w->builders->xdg_wm_base) {
+		fprintf(stderr, "Couldn't find compositor or xdg shell\n");
+		exit(EXIT_FAILURE);
+	}
+	xdg_wm_base_add_listener(w->builders->xdg_wm_base, &wm_base_listener, NULL);
+
+	return w;
+}
+
+
+/* ALLOWS FOR QUERYING OF SOME ENVIRONMENT VARIABLE */
+int wl_context_get(int query){
+	switch( query) {
+		case GLUT_SCREEN_WIDTH :
+			return 192;
+		break;
+		case GLUT_SCREEN_HEIGHT :
+			return 108;	/* 1156 */
+		break;
+		default:
+			exit(1);
+	}
+}

SOURCES/graphics/os/WAYLAND/wl_context.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <wayland-client.h>
+#include "../WAYLAND/xdg-shell.h"
+
+typedef struct {
+	struct wl_compositor *compositor;
+	struct wl_subcompositor *subcompositor;
+	struct xdg_wm_base *xdg_wm_base;
+	struct wl_output *output;
+} surface_builders;
+
+typedef struct {
+	struct wl_display *display;
+	struct wl_registry *registry;
+	surface_builders *builders;
+} wl_context;
+
+#define GLUT_SCREEN_WIDTH 0
+#define GLUT_SCREEN_HEIGHT 1
+
+void global_registry(
+	void *data, 
+	struct wl_registry *wl_registry,
+	uint32_t name, 
+	const char *interface, 
+	uint32_t version
+);
+
+void global_remove(
+	void *data, 
+	struct wl_registry *wl_registry,
+	uint32_t name
+);
+
+
+/*
+	the only event dispatched by the WM is the "ping" one
+	emitted periodically to check if clients are still alive
+	
+	calls
+		xdg_wm_base_pong
+			to inform the server that the client is alive and responsive
+*/
+void wm_ping(
+	void *data, 
+	struct xdg_wm_base *xdg_wm_base,
+	uint32_t serial);
+
+
+
+/* connects to the default display and initializes basic wayland resources */
+wl_context* wl_context_new();
+
+int wl_context_get( int query);

SOURCES/graphics/os/WAYLAND/xdg-shell.c

@@ -0,0 +1,183 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2008-2013 Kristian Høgsberg
+ * Copyright © 2013      Rafael Antognolli
+ * Copyright © 2013      Jasper St. Pierre
+ * Copyright © 2010-2013 Intel Corporation
+ * Copyright © 2015-2017 Samsung Electronics Co., Ltd
+ * Copyright © 2015-2017 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_output_interface;
+extern const struct wl_interface wl_seat_interface;
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface xdg_popup_interface;
+extern const struct wl_interface xdg_positioner_interface;
+extern const struct wl_interface xdg_surface_interface;
+extern const struct wl_interface xdg_toplevel_interface;
+
+static const struct wl_interface *xdg_shell_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&xdg_positioner_interface,
+	&xdg_surface_interface,
+	&wl_surface_interface,
+	&xdg_toplevel_interface,
+	&xdg_popup_interface,
+	&xdg_surface_interface,
+	&xdg_positioner_interface,
+	&xdg_toplevel_interface,
+	&wl_seat_interface,
+	NULL,
+	NULL,
+	NULL,
+	&wl_seat_interface,
+	NULL,
+	&wl_seat_interface,
+	NULL,
+	NULL,
+	&wl_output_interface,
+	&wl_seat_interface,
+	NULL,
+	&xdg_positioner_interface,
+	NULL,
+};
+
+static const struct wl_message xdg_wm_base_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "create_positioner", "n", xdg_shell_types + 4 },
+	{ "get_xdg_surface", "no", xdg_shell_types + 5 },
+	{ "pong", "u", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_wm_base_events[] = {
+	{ "ping", "u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_wm_base_interface = {
+	"xdg_wm_base", 5,
+	4, xdg_wm_base_requests,
+	1, xdg_wm_base_events,
+};
+
+static const struct wl_message xdg_positioner_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "set_size", "ii", xdg_shell_types + 0 },
+	{ "set_anchor_rect", "iiii", xdg_shell_types + 0 },
+	{ "set_anchor", "u", xdg_shell_types + 0 },
+	{ "set_gravity", "u", xdg_shell_types + 0 },
+	{ "set_constraint_adjustment", "u", xdg_shell_types + 0 },
+	{ "set_offset", "ii", xdg_shell_types + 0 },
+	{ "set_reactive", "3", xdg_shell_types + 0 },
+	{ "set_parent_size", "3ii", xdg_shell_types + 0 },
+	{ "set_parent_configure", "3u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_positioner_interface = {
+	"xdg_positioner", 5,
+	10, xdg_positioner_requests,
+	0, NULL,
+};
+
+static const struct wl_message xdg_surface_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "get_toplevel", "n", xdg_shell_types + 7 },
+	{ "get_popup", "n?oo", xdg_shell_types + 8 },
+	{ "set_window_geometry", "iiii", xdg_shell_types + 0 },
+	{ "ack_configure", "u", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_surface_events[] = {
+	{ "configure", "u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_surface_interface = {
+	"xdg_surface", 5,
+	5, xdg_surface_requests,
+	1, xdg_surface_events,
+};
+
+static const struct wl_message xdg_toplevel_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "set_parent", "?o", xdg_shell_types + 11 },
+	{ "set_title", "s", xdg_shell_types + 0 },
+	{ "set_app_id", "s", xdg_shell_types + 0 },
+	{ "show_window_menu", "ouii", xdg_shell_types + 12 },
+	{ "move", "ou", xdg_shell_types + 16 },
+	{ "resize", "ouu", xdg_shell_types + 18 },
+	{ "set_max_size", "ii", xdg_shell_types + 0 },
+	{ "set_min_size", "ii", xdg_shell_types + 0 },
+	{ "set_maximized", "", xdg_shell_types + 0 },
+	{ "unset_maximized", "", xdg_shell_types + 0 },
+	{ "set_fullscreen", "?o", xdg_shell_types + 21 },
+	{ "unset_fullscreen", "", xdg_shell_types + 0 },
+	{ "set_minimized", "", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_toplevel_events[] = {
+	{ "configure", "iia", xdg_shell_types + 0 },
+	{ "close", "", xdg_shell_types + 0 },
+	{ "configure_bounds", "4ii", xdg_shell_types + 0 },
+	{ "wm_capabilities", "5a", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_toplevel_interface = {
+	"xdg_toplevel", 5,
+	14, xdg_toplevel_requests,
+	4, xdg_toplevel_events,
+};
+
+static const struct wl_message xdg_popup_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "grab", "ou", xdg_shell_types + 22 },
+	{ "reposition", "3ou", xdg_shell_types + 24 },
+};
+
+static const struct wl_message xdg_popup_events[] = {
+	{ "configure", "iiii", xdg_shell_types + 0 },
+	{ "popup_done", "", xdg_shell_types + 0 },
+	{ "repositioned", "3u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_popup_interface = {
+	"xdg_popup", 5,
+	3, xdg_popup_requests,
+	3, xdg_popup_events,
+};
+