Latest 'stuff'

1 files changed, 86 insertions, 0 deletions

diff --git a/xcb_imagereading.c b/xcb_imagereading.c
new file mode 100644
index 0000000..ca06054
--- /dev/null
+++ b/xcb_imagereading.c
@@ -0,0 +1,86 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <xcb/xcb.h>
+#include <xcb/xcb_image.h>
+#include <xif.h>
+
+#define WIDTH 640
+#define HEIGHT 480
+
+int main(int arg, char **argv)
+{
+        xcb_connection_t *connection = xcb_connect(NULL, NULL);
+
+        xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(connection)).data;
+
+        xcb_colormap_t colormap = screen->default_colormap;
+
+        xcb_drawable_t window = xcb_generate_id(connection);
+        uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
+        uint32_t values[] = {screen->black_pixel, XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS};
+        xcb_create_window(connection,
+                        /*screen->root_depth,*/
+                        24,
+                        window,
+                        screen->root,
+                        0, 0,
+                        WIDTH, HEIGHT,
+                        1,
+                        XCB_WINDOW_CLASS_INPUT_OUTPUT,
+                        screen->root_visual,
+                        mask, values);
+
+        xcb_pixmap_t pixmap = xcb_generate_id(connection);
+        xcb_create_pixmap(connection,
+                        24,
+                        pixmap,
+                        window,
+                        WIDTH, HEIGHT);
+        xcb_image_t *image;
+        if (!(image = xif_read("test.xif"))) {
+                fputs("Error: xif_read returned null.\n", stderr);
+                exit(1);
+        }
+
+        xcb_gcontext_t gc = xcb_generate_id(connection);
+        xcb_create_gc(connection,
+                        gc,
+                        pixmap,
+                        0, NULL);
+
+        xcb_image_put(connection, pixmap, gc, image, 0, 0, 0);
+
+        xcb_map_window(connection, window);
+        xcb_flush(connection);
+
+        xcb_generic_event_t *event;
+        while ((event = xcb_wait_for_event(connection))) {
+                switch (event->response_type & ~0x80) {
+                case XCB_EXPOSE: ;
+                        xcb_expose_event_t *expose = (xcb_expose_event_t *)event;
+                        xcb_copy_area(connection,
+                                        pixmap,
+                                        window,
+                                        gc,
+                                        expose->x, expose->y,
+                                        expose->x, expose->y,
+                                        expose->width, expose->height);
+                        xcb_flush(connection);
+                        break;
+                case XCB_BUTTON_PRESS:
+                        goto end;
+                        break;
+                default:
+                        break;
+                }
+                free(event);
+        }
+end:
+
+        xcb_free_pixmap(connection, pixmap);
+        xcb_disconnect(connection);
+
+        xcb_image_destroy(image);
+
+        return 0;
+}