src/cairo-xlib-surface.c src/cairo-xlib.h doc/public/cairo-sections.txt: Drop the _for_pixmap() and _for_window() out of the create functions and use some lazy cleverness to sniff the information out as needed.

src/cairo-xlib-surface.c src/cairo-xlib-test.h Makefile.am: add cairo_test_xlib_disable_render() to turn off RENDER for tests.
Test various different types of Xlib surface creation.
Remove left-over include of Xrender.h.

1 files changed, 260 insertions, 0 deletions

diff --git a/test/xlib-surface.c b/test/xlib-surface.c
new file mode 100644
index 00000000..75b65713
--- /dev/null
+++ b/test/xlib-surface.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "cairo.h"
+#include "cairo-test.h"
+#include "cairo-xlib-test.h"
+#include "buffer-diff.h"
+
+#define SIZE 100
+#define OFFSCREEN_OFFSET 50
+#define VERBOSE 0
+
+cairo_bool_t result = 0;
+
+static void
+draw_pattern (cairo_surface_t *surface)
+{
+    cairo_t *cr = cairo_create (surface);
+    int i;
+
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+    cairo_paint (cr);
+
+    cairo_set_source_rgba (cr, 0, 0.0, 0.0, 0.50); /* half-alpha-black */
+
+    for (i = 1; i <= 3; i++) {
+	int inset = SIZE / 8 * i;
+	
+	cairo_rectangle (cr,
+			 inset,            inset,
+			 SIZE - 2 * inset, SIZE - 2 * inset);
+	cairo_fill (cr);
+    }
+    
+    cairo_destroy (cr);
+}
+
+static void
+erase_pattern (cairo_surface_t *surface)
+{
+    cairo_t *cr = cairo_create (surface);
+
+    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+    cairo_paint (cr);
+    
+    cairo_destroy (cr);
+}
+
+static cairo_bool_t
+do_test (Display        *dpy,
+	 unsigned char  *reference_data,
+	 unsigned char  *test_data,
+	 unsigned char  *diff_data,
+	 cairo_bool_t    use_render,
+	 cairo_bool_t    use_pixmap,
+	 cairo_bool_t    set_size,
+	 cairo_bool_t    offscreen)
+{
+    cairo_surface_t *surface;
+    cairo_surface_t *test_surface;
+    cairo_t *test_cr;
+    cairo_bool_t result;
+    Drawable drawable;
+    int screen = DefaultScreen (dpy);
+
+    if (use_pixmap && offscreen)
+	return 1;
+
+    if (use_pixmap) {
+	drawable = XCreatePixmap (dpy, DefaultRootWindow (dpy),
+				  SIZE, SIZE, DefaultDepth (dpy, screen));
+    } else {
+	XSetWindowAttributes xwa;
+	int x, y;
+
+	xwa.override_redirect = True;
+
+	if (offscreen) {
+	    x = - OFFSCREEN_OFFSET;
+	    y = - OFFSCREEN_OFFSET;
+	} else {
+	    x = 0;
+	    y = 0;
+	}
+
+	drawable = XCreateWindow (dpy, DefaultRootWindow (dpy),
+				  x, y, SIZE, SIZE, 0,
+				  DefaultDepth (dpy, screen), InputOutput,
+				  DefaultVisual (dpy, screen),
+				  CWOverrideRedirect, &xwa);
+	XMapWindow (dpy, drawable);
+    }
+
+    surface = cairo_xlib_surface_create_with_visual (dpy,
+						     drawable,
+						     DefaultVisual (dpy, screen));
+
+    if (set_size)
+	cairo_xlib_surface_set_size (surface, SIZE, SIZE);
+    
+    draw_pattern (surface);
+
+    test_surface = cairo_image_surface_create_for_data (test_data,
+							CAIRO_FORMAT_RGB24,
+							SIZE, SIZE,
+							SIZE * 4);
+
+    test_cr = cairo_create (test_surface);
+    cairo_set_source_surface (test_cr, surface, 0, 0);
+    cairo_paint (test_cr);
+
+    cairo_destroy (test_cr);
+    cairo_surface_destroy (test_surface);
+
+    /* We erase the surface to black in case we get the same
+     * memory back again for the pixmap case.
+     */
+    erase_pattern (surface);
+    cairo_surface_destroy (surface);
+
+    if (use_pixmap)
+	XFreePixmap (dpy, drawable);
+    else
+	XDestroyWindow (dpy, drawable);
+
+    if (offscreen) {
+	size_t offset = 4 * (SIZE * OFFSCREEN_OFFSET + OFFSCREEN_OFFSET);
+	
+	result = !buffer_diff (reference_data + offset,
+			       test_data + offset,
+			       diff_data + offset,
+			       SIZE - OFFSCREEN_OFFSET,
+			       SIZE - OFFSCREEN_OFFSET,
+			       4 * SIZE);
+    } else {
+	result = !buffer_diff (reference_data,
+			       test_data,
+			       diff_data,
+			       SIZE,
+			       SIZE,
+			       4 * SIZE);
+    }
+
+    if (VERBOSE || !result) {
+	fprintf (stderr, "xlib-surface: %s, %s, %s%s: %s\n",
+		 use_render ? "   render" : "no-render",
+		 set_size ? "   size" : "no-size",
+		 use_pixmap ? "pixmap" : "window",
+		 use_pixmap ?
+		    "           " :
+		    (offscreen ? ", offscreen" : ",  onscreen"),
+		 result ? "PASS" : "FAIL");
+    }
+
+    return result;
+}
+
+static cairo_bool_t
+check_visual (Display *dpy)
+{
+    Visual *visual = DefaultVisual (dpy, DefaultScreen (dpy));
+    
+    if ((visual->red_mask   == 0xff0000 &&
+	 visual->green_mask == 0x00ff00 &&
+	 visual->blue_mask  == 0x0000ff) ||
+	(visual->red_mask   == 0x0000ff &&
+	 visual->green_mask == 0x00ff00 &&
+	 visual->blue_mask  == 0xff0000))
+	return 1;
+    else
+	return 0;
+}
+	  
+int
+main (void)
+{
+    Display *dpy;
+    unsigned char *reference_data;
+    unsigned char *test_data;
+    unsigned char *diff_data;
+    cairo_surface_t *reference_surface;
+    cairo_bool_t use_pixmap;
+    cairo_bool_t set_size;
+    cairo_bool_t offscreen;
+    result = 0;
+
+    dpy = XOpenDisplay (NULL);
+    if (!dpy) {
+	fprintf (stderr, "xlib-surface: Cannot open display, skipping\n");
+	return 0;
+    }
+
+    if (!check_visual (dpy)) {
+	fprintf (stderr, "xlib-surface: default visual is not RGB24 or BGR24, skipping\n");
+	return 0;
+    }
+
+    reference_data = malloc (SIZE * SIZE * 4);
+    test_data = malloc (SIZE * SIZE * 4);
+    diff_data = malloc (SIZE * SIZE * 4);
+    
+    reference_surface = cairo_image_surface_create_for_data (reference_data,
+							     CAIRO_FORMAT_RGB24,
+							     SIZE, SIZE,
+							     SIZE * 4);
+
+    draw_pattern (reference_surface);
+    cairo_surface_destroy (reference_surface);
+
+    for (set_size = 0; set_size <= 1; set_size++)
+	for (use_pixmap = 0; use_pixmap <= 1; use_pixmap++)
+	    for (offscreen = 0; offscreen <= 1; offscreen++)
+		if (!do_test (dpy,
+			      reference_data, test_data, diff_data,
+			      1, use_pixmap, set_size, offscreen))
+		    result = 1;
+
+    cairo_test_xlib_disable_render ();
+
+    for (set_size = 0; set_size <= 1; set_size++)
+	for (use_pixmap = 0; use_pixmap <= 1; use_pixmap++)
+	    for (offscreen = 0; offscreen <= 1; offscreen++)
+		if (!do_test (dpy,
+			      reference_data, test_data, diff_data,
+			      0, use_pixmap, set_size, offscreen))
+		    result = 1;
+
+    free (reference_data);
+    free (test_data);
+    free (diff_data);
+
+    XCloseDisplay (dpy);
+    
+    return result;
+}