Clumsy animation

Program can change the content of the surface.

CMakeLists.txt

@@ -24,15 +24,18 @@ set(SOURCES
 )
 
 # Dodaj pliki nagłówkowe do źródeł tetris
-set(HEADERS
+set(GENHEADERS
     ${CMAKE_CURRENT_BINARY_DIR}/include/xdg-shell.h
 )
 
 # Kompilacja
-add_executable(tetris ${SOURCES} ${HEADERS})
+add_executable(tetris ${SOURCES} ${GENHEADERS})
 
 # Dodaj pliki nagłówkowe do kompilacji
-target_include_directories(tetris PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include)
+target_include_directories(tetris
+	PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
+	PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
+)
 
 # Dodanie biblioteki wayland-client
 target_link_libraries(tetris wayland-client)

include/puzzle.h

@@ -0,0 +1,10 @@
+#ifndef PUZZLE_H
+#define PUZZLE_H
+
+struct puzzle {
+	int with;
+	int height;
+	unsigned char *data;
+};
+
+#endif

tetris.c

@@ -10,12 +10,26 @@
 #include <wayland-client-protocol.h>
 #include <wayland-client.h>
 
+#include <puzzle.h>
+
 struct wl_compositor *compositor;
 struct wl_shm *shm;
 struct xdg_wm_base *xdg_shell;
 struct wl_seat *wl_seat;
 
 int running = 1;
+int released = 0;
+
+struct canvas
+{
+	int width;
+	int height;
+	int stride;
+	int size;
+	struct wl_buffer *buffer;
+	unsigned char *data;
+	struct wl_surface *surface;
+} canvas;
 
 // registry
 void registry_global_handler(
@@ -103,12 +117,22 @@ void xdg_wm_base_ping_handler(void *data, struct xdg_wm_base *xdg_shell,
 							  uint32_t serial)
 {
 	xdg_wm_base_pong(xdg_shell, serial);
-	printf("wm_base ping-pong\n");
+	// printf("wm_base ping-pong\n");
 }
 
 const struct xdg_wm_base_listener xdg_shell_listener = {
 	.ping = xdg_wm_base_ping_handler};
 
+
+void wl_buffer_release_handler(void *data, struct wl_buffer * wl_buffer) {
+	printf("wl_buffer_release\n");
+	released = 1;
+}
+
+const struct wl_buffer_listener wl_buffer_listener = {
+	.release = wl_buffer_release_handler};
+
+void redraw();
 // main
 
 int main(void)
@@ -122,45 +146,76 @@ int main(void)
 
 	xdg_wm_base_add_listener(xdg_shell, &xdg_shell_listener, NULL);
 
-	struct wl_surface *surface = wl_compositor_create_surface(compositor);
-	struct xdg_surface *xdg_surface = xdg_wm_base_get_xdg_surface(xdg_shell, surface);
+	canvas.surface = wl_compositor_create_surface(compositor);
+	struct xdg_surface *xdg_surface = xdg_wm_base_get_xdg_surface(xdg_shell, canvas.surface);
 	struct xdg_toplevel *xdg_toplevel = xdg_surface_get_toplevel(xdg_surface);
 
 	xdg_surface_add_listener(xdg_surface, &xdg_surface_listener, NULL);
 	xdg_toplevel_add_listener(xdg_toplevel, &xdg_toplevel_listener, NULL);
 
-	xdg_toplevel_set_app_id(xdg_toplevel, "ark-1");
+	xdg_toplevel_set_app_id(xdg_toplevel, "eu.ar76.tetris");
 	xdg_toplevel_set_title(xdg_toplevel, "Ark Jeden.");
 
 	// signal that the surface is ready to be configured
-	wl_surface_commit(surface);
+	wl_surface_commit(canvas.surface);
 
 	struct wl_keyboard *wl_keyboard = wl_seat_get_keyboard(wl_seat);
 
-	int width = 600;
-	int height = 800;
-	int stride = width * 4;
-	int size = stride * height; // bytes
+	canvas.width = 600;
+	canvas.height = 800;
+	canvas.stride = canvas.width * 4;
+	canvas.size = canvas.stride * canvas.height; // bytes
 
 	// open an anonymous file and write some zero bytes to it
 	int fd = syscall(SYS_memfd_create, "buffer", 0);
-	ftruncate(fd, size);
+	ftruncate(fd, canvas.size);
 
 	// map it to the memory
-	unsigned char *data =
-		mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	canvas.data =
+		mmap(NULL, canvas.size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 
 	// turn it into a shared memory pool
-	struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, size);
+	struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, canvas.size);
+
+	close(fd); // mapped, so can be closed
 
 	// allocate the buffer in that pool
-	struct wl_buffer *buffer = wl_shm_pool_create_buffer(
-		pool, 0, width, height, stride, WL_SHM_FORMAT_ARGB8888);
+	canvas.buffer = wl_shm_pool_create_buffer(
+		pool, 0, canvas.width, canvas.height, canvas.stride, WL_SHM_FORMAT_ARGB8888);
 
-	// draw into buffer
-	for (int x = 0; x < width; x++)
+	wl_buffer_add_listener(canvas.buffer, &wl_buffer_listener, NULL);
+	// wait for the surface to be configured
+	wl_display_roundtrip(display);
+
+	redraw();
+
+	int counter = 0;
+	while (wl_display_dispatch(display) != -1 && running)
 	{
-		for (int y = 0; y < height; y++)
+		// nothing inside
+		if (released && ++counter > 10) {
+			redraw();
+			released = 0;
+			counter = 0;
+		}
+	}
+
+	xdg_toplevel_destroy(xdg_toplevel);
+	xdg_surface_destroy(xdg_surface);
+	wl_surface_destroy(canvas.surface);
+	wl_shm_pool_destroy(pool);
+	wl_registry_destroy(registry);
+}
+
+unsigned char dred = 1;
+void redraw()
+{
+	dred = 1-dred;
+	printf("dred=%d\n", dred);
+	// draw into buffer
+	for (int x = 0; x < canvas.width; x++)
+	{
+		for (int y = 0; y < canvas.height; y++)
 		{
 
 			struct pixel
@@ -170,7 +225,7 @@ int main(void)
 				unsigned char green;
 				unsigned char red;
 				unsigned char alpha;
-			} *px = (struct pixel *)(data + y * stride + x * 4);
+			} *px = (struct pixel *)(canvas.data + y * canvas.stride + x * 4);
 
 			// draw a stripes pattern
 			if ((x + y) % 30 < 10)
@@ -190,27 +245,14 @@ int main(void)
 			{
 				// semitransparent red
 				px->alpha = 128;
-				px->red = 255;
+				px->red = dred * 255;
 				px->green = 0;
-				px->blue = 0;
+				px->blue = (1 - dred) * 255;
 			}
 		}
 	}
 
-	// wait for the surface to be configured
-	wl_display_roundtrip(display);
-
-	wl_surface_attach(surface, buffer, 0, 0);
-	wl_surface_damage(surface, 0, 0, UINT32_MAX, UINT32_MAX);
-	wl_surface_commit(surface);
-
-	while (wl_display_dispatch(display) != -1 && running)
-	{
-		// nothing inside
-	}
-
-	xdg_toplevel_destroy(xdg_toplevel);
-	xdg_surface_destroy(xdg_surface);
-	wl_surface_destroy(surface);
-	wl_registry_destroy(registry);
+	wl_surface_attach(canvas.surface, canvas.buffer, 0, 0);
+	wl_surface_damage(canvas.surface, 0, 0, canvas.width, canvas.height);
+	wl_surface_commit(canvas.surface);
 }