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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Guido Tack <tack@gecode.org>
5 *
6 * Copyright:
7 * Guido Tack, 2006
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34namespace Gecode { namespace Gist {
35
36 inline void
37 DrawingCursor::moveUpwards(void) {
38 x -= node()->getOffset();
39 y -= Layout::dist_y;
40 NodeCursor<VisualNode>::moveUpwards();
41 }
42
43 forceinline bool
44 DrawingCursor::isClipped(void) {
45 if (clippingRect.width() == 0 && clippingRect.x() == 0
46 && clippingRect.height() == 0 && clippingRect.y() == 0)
47 return false;
48 BoundingBox b = node()->getBoundingBox();
49 return (x + b.left > clippingRect.x() + clippingRect.width() ||
50 x + b.right < clippingRect.x() ||
51 y > clippingRect.y() + clippingRect.height() ||
52 y + (node()->getShape()->depth()+1) * Layout::dist_y <
53 clippingRect.y());
54 }
55
56 inline bool
57 DrawingCursor::mayMoveDownwards(void) {
58 return NodeCursor<VisualNode>::mayMoveDownwards() &&
59 !node()->isHidden() &&
60 node()->childrenLayoutIsDone() &&
61 !isClipped();
62 }
63
64 inline void
65 DrawingCursor::moveDownwards(void) {
66 NodeCursor<VisualNode>::moveDownwards();
67 x += node()->getOffset();
68 y += Layout::dist_y;
69 }
70
71 inline void
72 DrawingCursor::moveSidewards(void) {
73 x -= node()->getOffset();
74 NodeCursor<VisualNode>::moveSidewards();
75 x += node()->getOffset();
76 }
77
78
79}}
80// STATISTICS: gist-any