forked from KolibriOS/kolibrios
754f9336f0
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
315 lines
8.5 KiB
C
315 lines
8.5 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2009 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* Contributor(s):
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* Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairoint.h"
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#include "cairo-xcb-private.h"
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#include <xcb/xcbext.h>
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xcb_pixmap_t
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_cairo_xcb_connection_create_pixmap (cairo_xcb_connection_t *connection,
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uint8_t depth,
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xcb_drawable_t drawable,
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uint16_t width,
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uint16_t height)
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{
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xcb_pixmap_t pixmap = _cairo_xcb_connection_get_xid (connection);
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assert (width > 0);
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assert (height > 0);
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xcb_create_pixmap (connection->xcb_connection,
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depth, pixmap, drawable,
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width, height);
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return pixmap;
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}
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void
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_cairo_xcb_connection_free_pixmap (cairo_xcb_connection_t *connection,
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xcb_pixmap_t pixmap)
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{
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xcb_free_pixmap (connection->xcb_connection, pixmap);
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_cairo_xcb_connection_put_xid (connection, pixmap);
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}
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xcb_gcontext_t
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_cairo_xcb_connection_create_gc (cairo_xcb_connection_t *connection,
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xcb_drawable_t drawable,
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uint32_t value_mask,
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uint32_t *values)
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{
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xcb_gcontext_t gc = _cairo_xcb_connection_get_xid (connection);
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xcb_create_gc (connection->xcb_connection, gc, drawable,
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value_mask, values);
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return gc;
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}
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void
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_cairo_xcb_connection_free_gc (cairo_xcb_connection_t *connection,
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xcb_gcontext_t gc)
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{
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xcb_free_gc (connection->xcb_connection, gc);
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_cairo_xcb_connection_put_xid (connection, gc);
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}
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void
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_cairo_xcb_connection_change_gc (cairo_xcb_connection_t *connection,
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xcb_gcontext_t gc,
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uint32_t value_mask,
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uint32_t *values)
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{
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xcb_change_gc (connection->xcb_connection, gc,
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value_mask, values);
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}
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void
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_cairo_xcb_connection_copy_area (cairo_xcb_connection_t *connection,
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xcb_drawable_t src,
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xcb_drawable_t dst,
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xcb_gcontext_t gc,
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int16_t src_x,
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int16_t src_y,
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int16_t dst_x,
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int16_t dst_y,
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uint16_t width,
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uint16_t height)
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{
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xcb_copy_area (connection->xcb_connection, src, dst, gc,
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src_x, src_y, dst_x, dst_y, width, height);
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}
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void
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_cairo_xcb_connection_poly_fill_rectangle (cairo_xcb_connection_t *connection,
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xcb_drawable_t dst,
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xcb_gcontext_t gc,
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uint32_t num_rectangles,
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xcb_rectangle_t *rectangles)
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{
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xcb_poly_fill_rectangle (connection->xcb_connection, dst, gc,
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num_rectangles, rectangles);
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}
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void
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_cairo_xcb_connection_put_image (cairo_xcb_connection_t *connection,
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xcb_drawable_t dst,
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xcb_gcontext_t gc,
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uint16_t width,
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uint16_t height,
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int16_t dst_x,
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int16_t dst_y,
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uint8_t depth,
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uint32_t stride,
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void *data)
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{
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const uint32_t req_size = 18;
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uint32_t length = height * stride;
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uint32_t len = (req_size + length) >> 2;
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if (len < connection->maximum_request_length) {
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xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
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dst, gc, width, height, dst_x, dst_y, 0, depth,
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length, data);
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} else {
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int rows = (connection->maximum_request_length - req_size - 4) / stride;
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if (rows > 0) {
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do {
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if (rows > height)
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rows = height;
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length = rows * stride;
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xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
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dst, gc, width, rows, dst_x, dst_y, 0, depth, length, data);
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height -= rows;
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dst_y += rows;
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data = (char *) data + length;
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} while (height);
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} else {
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ASSERT_NOT_REACHED;
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}
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}
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}
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static void
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_cairo_xcb_connection_do_put_subimage (cairo_xcb_connection_t *connection,
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xcb_drawable_t dst,
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xcb_gcontext_t gc,
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int16_t src_x,
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int16_t src_y,
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uint16_t width,
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uint16_t height,
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uint16_t cpp,
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int stride,
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int16_t dst_x,
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int16_t dst_y,
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uint8_t depth,
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void *_data)
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{
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xcb_protocol_request_t xcb_req = {
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0 /* count */,
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0 /* ext */,
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XCB_PUT_IMAGE /* opcode */,
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1 /* isvoid (doesn't cause a reply) */
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};
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xcb_put_image_request_t req;
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struct iovec vec_stack[CAIRO_STACK_ARRAY_LENGTH (struct iovec)];
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struct iovec *vec = vec_stack;
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uint32_t len = 0;
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uint8_t *data = _data;
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int n = 3;
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/* Two extra entries are needed for xcb, two for us */
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int entries_needed = height + 2 + 2;
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req.format = XCB_IMAGE_FORMAT_Z_PIXMAP;
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req.drawable = dst;
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req.gc = gc;
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req.width = width;
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req.height = height;
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req.dst_x = dst_x;
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req.dst_y = dst_y;
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req.left_pad = 0;
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req.depth = depth;
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req.pad0[0] = 0;
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req.pad0[1] = 0;
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if (entries_needed > ARRAY_LENGTH (vec_stack)) {
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vec = _cairo_malloc_ab (entries_needed, sizeof (struct iovec));
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if (unlikely (vec == NULL)) {
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/* XXX loop over ARRAY_LENGTH (vec_stack) */
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return;
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}
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}
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data += src_y * stride + src_x * cpp;
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/* vec[1] will be used in XCB if it has to use BigRequests or insert a sync,
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* vec[0] is used if the internal queue needs to be flushed. */
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vec[2].iov_base = (char *) &req;
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vec[2].iov_len = sizeof (req);
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/* Now comes the actual data */
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while (height--) {
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vec[n].iov_base = data;
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vec[n].iov_len = cpp * width;
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len += cpp * width;
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data += stride;
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n++;
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}
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/* And again some padding */
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vec[n].iov_base = 0;
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vec[n].iov_len = -len & 3;
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n++;
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/* For efficiency reasons, this functions writes the request "directly" to
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* the xcb connection to avoid having to copy the data around. */
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assert (n == entries_needed);
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xcb_req.count = n - 2;
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xcb_send_request (connection->xcb_connection, 0, &vec[2], &xcb_req);
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if (vec != vec_stack)
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free (vec);
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}
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void
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_cairo_xcb_connection_put_subimage (cairo_xcb_connection_t *connection,
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xcb_drawable_t dst,
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xcb_gcontext_t gc,
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int16_t src_x,
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int16_t src_y,
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uint16_t width,
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uint16_t height,
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uint16_t cpp,
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int stride,
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int16_t dst_x,
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int16_t dst_y,
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uint8_t depth,
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void *_data)
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{
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const uint32_t req_size = sizeof(xcb_put_image_request_t);
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uint32_t length = height * cpp * width;
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uint32_t len = (req_size + length) >> 2;
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if (len < connection->maximum_request_length) {
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_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
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width, height, cpp, stride, dst_x, dst_y, depth, _data);
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} else {
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int rows = (connection->maximum_request_length - req_size - 4) / (cpp * width);
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if (rows > 0) {
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do {
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if (rows > height)
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rows = height;
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length = rows * cpp * width;
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_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
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width, rows, cpp, stride, dst_x, dst_y, depth, _data);
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height -= rows;
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dst_y += rows;
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_data = (char *) _data + stride * rows;
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} while (height);
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} else {
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ASSERT_NOT_REACHED;
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}
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}
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}
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cairo_status_t
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_cairo_xcb_connection_get_image (cairo_xcb_connection_t *connection,
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xcb_drawable_t src,
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int16_t src_x,
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int16_t src_y,
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uint16_t width,
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uint16_t height,
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xcb_get_image_reply_t **reply)
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{
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xcb_generic_error_t *error;
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*reply = xcb_get_image_reply (connection->xcb_connection,
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xcb_get_image (connection->xcb_connection,
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XCB_IMAGE_FORMAT_Z_PIXMAP,
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src,
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src_x, src_y,
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width, height,
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(uint32_t) -1),
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&error);
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if (error) {
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free (error);
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free (*reply);
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*reply = NULL;
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}
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return CAIRO_STATUS_SUCCESS;
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}
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