add cairo

1 files changed, 300 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c b/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c
new file mode 100644
index 0000000..e01dc1a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c
@@ -0,0 +1,300 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+
+#include <xcb/xcbext.h>
+
+xcb_pixmap_t
+_cairo_xcb_connection_create_pixmap (cairo_xcb_connection_t *connection,
+				     uint8_t depth,
+				     xcb_drawable_t drawable,
+				     uint16_t width,
+				     uint16_t height)
+{
+    xcb_pixmap_t pixmap = _cairo_xcb_connection_get_xid (connection);
+
+    assert (width > 0);
+    assert (height > 0);
+    xcb_create_pixmap (connection->xcb_connection,
+		       depth, pixmap, drawable,
+		       width, height);
+    return pixmap;
+}
+
+void
+_cairo_xcb_connection_free_pixmap (cairo_xcb_connection_t *connection,
+				   xcb_pixmap_t pixmap)
+{
+    xcb_free_pixmap (connection->xcb_connection, pixmap);
+    _cairo_xcb_connection_put_xid (connection, pixmap);
+}
+
+xcb_gcontext_t
+_cairo_xcb_connection_create_gc (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t drawable,
+				 uint32_t value_mask,
+				 uint32_t *values)
+{
+    xcb_gcontext_t gc = _cairo_xcb_connection_get_xid (connection);
+    xcb_create_gc (connection->xcb_connection, gc, drawable,
+		   value_mask, values);
+    return gc;
+}
+
+void
+_cairo_xcb_connection_free_gc (cairo_xcb_connection_t *connection,
+			       xcb_gcontext_t gc)
+{
+    xcb_free_gc (connection->xcb_connection, gc);
+    _cairo_xcb_connection_put_xid (connection, gc);
+}
+
+void
+_cairo_xcb_connection_change_gc (cairo_xcb_connection_t *connection,
+				 xcb_gcontext_t gc,
+				 uint32_t value_mask,
+				 uint32_t *values)
+{
+    xcb_change_gc (connection->xcb_connection, gc,
+		   value_mask, values);
+}
+
+void
+_cairo_xcb_connection_copy_area (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 int16_t src_x,
+				 int16_t src_y,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint16_t width,
+				 uint16_t height)
+{
+    xcb_copy_area (connection->xcb_connection, src, dst, gc,
+		   src_x, src_y, dst_x, dst_y, width, height);
+}
+
+void
+_cairo_xcb_connection_poly_fill_rectangle (cairo_xcb_connection_t *connection,
+					   xcb_drawable_t dst,
+					   xcb_gcontext_t gc,
+					   uint32_t num_rectangles,
+					   xcb_rectangle_t *rectangles)
+{
+    xcb_poly_fill_rectangle (connection->xcb_connection, dst, gc,
+			     num_rectangles, rectangles);
+}
+
+void
+_cairo_xcb_connection_put_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 uint16_t width,
+				 uint16_t height,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint8_t depth,
+				 uint32_t stride,
+				 void *data)
+{
+    const uint32_t req_size = 18;
+    uint32_t length = height * stride;
+    uint32_t len = (req_size + length) >> 2;
+
+    if (len < connection->maximum_request_length) {
+	xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
+		       dst, gc, width, height, dst_x, dst_y, 0, depth,
+		       length, data);
+    } else {
+	int rows = (connection->maximum_request_length - req_size - 4) / stride;
+	if (rows > 0) {
+	    do {
+		if (rows > height)
+		    rows = height;
+
+		length = rows * stride;
+
+		xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
+			       dst, gc, width, rows, dst_x, dst_y, 0, depth, length, data);
+
+		height -= rows;
+		dst_y += rows;
+		data = (char *) data + length;
+	    } while (height);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+}
+
+static void
+_cairo_xcb_connection_do_put_subimage (cairo_xcb_connection_t *connection,
+				       xcb_drawable_t dst,
+				       xcb_gcontext_t gc,
+				       int16_t src_x,
+				       int16_t src_y,
+				       uint16_t width,
+				       uint16_t height,
+				       uint16_t cpp,
+				       int stride,
+				       int16_t dst_x,
+				       int16_t dst_y,
+				       uint8_t depth,
+				       void *_data)
+{
+    xcb_protocol_request_t xcb_req = {
+	0 /* count */,
+	0 /* ext */,
+	XCB_PUT_IMAGE /* opcode */,
+	1 /* isvoid (doesn't cause a reply) */
+    };
+    xcb_put_image_request_t req;
+    struct iovec vec_stack[CAIRO_STACK_ARRAY_LENGTH (struct iovec)];
+    struct iovec *vec = vec_stack;
+    uint32_t len = 0;
+    uint8_t *data = _data;
+    int n = 3;
+    /* Two extra entries are needed for xcb, two for us */
+    int entries_needed = height + 2 + 2;
+
+    req.format = XCB_IMAGE_FORMAT_Z_PIXMAP;
+    req.drawable = dst;
+    req.gc = gc;
+    req.width = width;
+    req.height = height;
+    req.dst_x = dst_x;
+    req.dst_y = dst_y;
+    req.left_pad = 0;
+    req.depth = depth;
+    req.pad0[0] = 0;
+    req.pad0[1] = 0;
+
+    if (entries_needed > ARRAY_LENGTH (vec_stack)) {
+	vec = _cairo_malloc_ab (entries_needed, sizeof (struct iovec));
+	if (unlikely (vec == NULL)) {
+	    /* XXX loop over ARRAY_LENGTH (vec_stack) */
+	    return;
+	}
+    }
+
+    data += src_y * stride + src_x * cpp;
+    /* vec[1] will be used in XCB if it has to use BigRequests or insert a sync,
+     * vec[0] is used if the internal queue needs to be flushed. */
+    vec[2].iov_base = (char *) &req;
+    vec[2].iov_len = sizeof (req);
+
+    /* Now comes the actual data */
+    while (height--) {
+	vec[n].iov_base = data;
+	vec[n].iov_len = cpp * width;
+	len += cpp * width;
+	data += stride;
+	n++;
+    }
+
+    /* And again some padding */
+    vec[n].iov_base = 0;
+    vec[n].iov_len = -len & 3;
+    n++;
+
+    /* For efficiency reasons, this functions writes the request "directly" to
+     * the xcb connection to avoid having to copy the data around. */
+    assert (n == entries_needed);
+    xcb_req.count = n - 2;
+    xcb_send_request (connection->xcb_connection, 0, &vec[2], &xcb_req);
+
+    if (vec != vec_stack)
+	free (vec);
+}
+
+void
+_cairo_xcb_connection_put_subimage (cairo_xcb_connection_t *connection,
+				    xcb_drawable_t dst,
+				    xcb_gcontext_t gc,
+				    int16_t src_x,
+				    int16_t src_y,
+				    uint16_t width,
+				    uint16_t height,
+				    uint16_t cpp,
+				    int stride,
+				    int16_t dst_x,
+				    int16_t dst_y,
+				    uint8_t depth,
+				    void *_data)
+{
+    const uint32_t req_size = sizeof(xcb_put_image_request_t);
+    uint32_t length = height * cpp * width;
+    uint32_t len = (req_size + length) >> 2;
+
+    if (len < connection->maximum_request_length) {
+	_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
+			width, height, cpp, stride, dst_x, dst_y, depth, _data);
+    } else {
+	int rows = (connection->maximum_request_length - req_size - 4) / (cpp * width);
+	if (rows > 0) {
+	    do {
+		if (rows > height)
+		    rows = height;
+
+		_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
+			width, rows, cpp, stride, dst_x, dst_y, depth, _data);
+
+		height -= rows;
+		dst_y += rows;
+		_data = (char *) _data + stride * rows;
+	    } while (height);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+}
+
+xcb_get_image_reply_t *
+_cairo_xcb_connection_get_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 int16_t src_x,
+				 int16_t src_y,
+				 uint16_t width,
+				 uint16_t height)
+{
+    return xcb_get_image_reply (connection->xcb_connection,
+				xcb_get_image (connection->xcb_connection,
+					       XCB_IMAGE_FORMAT_Z_PIXMAP,
+					       src,
+					       src_x, src_y,
+					       width, height,
+					       (uint32_t) -1),
+				NULL);
+}