--- /dev/null
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <i915_drm.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <math.h>
+#include <time.h>
+#include <cairo.h>
+
+#include "wayland-client.h"
+
+static const char gem_device[] = "/dev/dri/card0";
+static const char socket_name[] = "\0wayland";
+
+static uint32_t name_cairo_surface(int fd, cairo_surface_t *surface)
+{
+ struct drm_i915_gem_create create;
+ struct drm_gem_flink flink;
+ struct drm_i915_gem_pwrite pwrite;
+ int32_t width, height, stride;
+
+ width = cairo_image_surface_get_width(surface);
+ height = cairo_image_surface_get_height(surface);
+ stride = cairo_image_surface_get_stride(surface);
+
+ memset(&create, 0, sizeof(create));
+ create.size = height * stride;
+
+ if (ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create) != 0) {
+ fprintf(stderr, "gem create failed: %m\n");
+ return 0;
+ }
+
+ pwrite.handle = create.handle;
+ pwrite.offset = 0;
+ pwrite.size = height * stride;
+ pwrite.data_ptr = (uint64_t) (uintptr_t)
+ cairo_image_surface_get_data(surface);
+ if (ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite) < 0) {
+ fprintf(stderr, "gem pwrite failed: %m\n");
+ return 0;
+ }
+
+ flink.handle = create.handle;
+ if (ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink) != 0) {
+ fprintf(stderr, "gem flink failed: %m\n");
+ return 0;
+ }
+
+#if 0
+ /* We need to hold on to the handle until the server has received
+ * the attach request... we probably need a confirmation event.
+ * I guess the breadcrumb idea will suffice. */
+ struct drm_gem_close close;
+ close.handle = create.handle;
+ if (ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close) < 0) {
+ fprintf(stderr, "gem close failed: %m\n");
+ return 0;
+ }
+#endif
+
+ return flink.name;
+}
+
+static void *
+draw_pointer(int width, int height)
+{
+ const int d = 2, end = 4, tx = 2, ty = 6, dx = 5, dy = 4;
+ cairo_surface_t *surface;
+ cairo_t *cr;
+
+ surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
+ width, height);
+
+ cr = cairo_create(surface);
+ cairo_set_line_width (cr, d);
+ cairo_move_to(cr, d, d);
+ cairo_line_to(cr, d + tx, d + ty);
+ cairo_line_to(cr, d + dx, d + dy);
+ cairo_line_to(cr, width - end, height - d);
+ cairo_line_to(cr, width - d, height - end);
+ cairo_line_to(cr, d + dy, d + dx);
+ cairo_line_to(cr, d + ty, d + tx);
+ cairo_close_path(cr);
+ cairo_set_source_rgb(cr, 1, 1, 1);
+ cairo_stroke_preserve(cr);
+ cairo_set_source_rgb(cr, 1, 0, 0);
+ cairo_fill(cr);
+
+ cairo_destroy(cr);
+
+ return surface;
+}
+
+static int
+connection_update(struct wl_connection *connection,
+ uint32_t mask, void *data)
+{
+ return 0;
+}
+
+struct pointer {
+ int width, height;
+ struct wl_surface *surface;
+};
+
+void event_handler(struct wl_display *display,
+ uint32_t opcode,
+ uint32_t arg1, uint32_t arg2, void *data)
+{
+ struct pointer *pointer = data;
+
+ wl_surface_map(pointer->surface, arg1, arg2, pointer->width, pointer->height);
+
+}
+
+int main(int argc, char *argv[])
+{
+ struct wl_display *display;
+ struct pointer pointer;
+ int fd;
+ uint32_t name;
+ cairo_surface_t *s;
+
+ srandom(time(NULL));
+
+ fd = open(gem_device, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "drm open failed: %m\n");
+ return -1;
+ }
+
+ display = wl_display_create(socket_name,
+ connection_update, NULL);
+ if (display == NULL) {
+ fprintf(stderr, "failed to create display: %m\n");
+ return -1;
+ }
+
+ pointer.width = 16;
+ pointer.height = 16;
+ pointer.surface = wl_display_create_surface(display);
+
+ s = draw_pointer(pointer.width, pointer.height);
+ name = name_cairo_surface(fd, s);
+
+ wl_surface_attach(pointer.surface, name,
+ pointer.width, pointer.height,
+ cairo_image_surface_get_stride(s));
+
+ wl_display_set_event_handler(display, event_handler, &pointer);
+
+ while (1)
+ wl_display_iterate(display,
+ WL_CONNECTION_WRITABLE |
+ WL_CONNECTION_READABLE);
+
+ return 0;
+}
struct wl_connection *connection;
int fd;
uint32_t id;
+
+ wl_display_event_func_t event_handler;
+ void *event_handler_data;
};
struct wl_surface {
}
static void
-handle_event(struct wl_connection *connection, uint32_t opcode, uint32_t size)
+handle_event(struct wl_display *display, uint32_t opcode, uint32_t size)
{
uint32_t p[4];
- wl_connection_copy(connection, p, size);
- printf("signal from object %d, opcode %d, size %d, args: %d, %d\n",
- p[0], opcode, size, p[2], p[3]);
- wl_connection_consume(connection, size);
+ wl_connection_copy(display->connection, p, size);
+ if (display->event_handler != NULL)
+ display->event_handler(display, opcode, p[2], p[3],
+ display->event_handler_data);
+ wl_connection_consume(display->connection, size);
}
void
if (len < size)
break;
- handle_event(display->connection, opcode, size);
+ handle_event(display, opcode, size);
len -= size;
}
}
}
+void
+wl_display_set_event_handler(struct wl_display *display,
+ wl_display_event_func_t handler,
+ void *data)
+{
+ /* FIXME: This needs something more generic... */
+ display->event_handler = handler;
+ display->event_handler_data = data;
+}
+
#define WL_DISPLAY_CREATE_SURFACE 0
struct wl_surface *