1 /* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /***********************************************************
3 
4 Copyright 1987, 1998  The Open Group
5 
6 Permission to use, copy, modify, distribute, and sell this software and its
7 documentation for any purpose is hereby granted without fee, provided that
8 the above copyright notice appear in all copies and that both that
9 copyright notice and this permission notice appear in supporting
10 documentation.
11 
12 The above copyright notice and this permission notice shall be included in
13 all copies or substantial portions of the Software.
14 
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 
22 Except as contained in this notice, the name of The Open Group shall not be
23 used in advertising or otherwise to promote the sale, use or other dealings
24 in this Software without prior written authorization from The Open Group.
25 
26 
27 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
28 
29                         All Rights Reserved
30 
31 Permission to use, copy, modify, and distribute this software and its
32 documentation for any purpose and without fee is hereby granted,
33 provided that the above copyright notice appear in all copies and that
34 both that copyright notice and this permission notice appear in
35 supporting documentation, and that the name of Digital not be
36 used in advertising or publicity pertaining to distribution of the
37 software without specific, written prior permission.
38 
39 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
40 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
41 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
42 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
43 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
44 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
45 SOFTWARE.
46 
47 ******************************************************************/
48 
49 #ifndef H_SPICE_COMMON_LINES
50 #define H_SPICE_COMMON_LINES
51 
52 #include <stdlib.h>
53 #include <string.h>
54 #include <spice/macros.h>
55 
56 #include "pixman_utils.h"
57 #include "draw.h"
58 
59 SPICE_BEGIN_DECLS
60 
61 typedef struct lineGC lineGC;
62 
63 typedef struct {
64     void (*FillSpans)(lineGC * pGC,
65                       int num_spans, SpicePoint * points, int *widths,
66                       int sorted, int foreground);
67     void (*FillRects)(lineGC * pGC,
68                       int nun_rects, pixman_rectangle32_t * rects,
69                       int foreground);
70 } lineGCOps;
71 
72 struct lineGC {
73     int width;
74     int height;
75     unsigned char alu;
76     unsigned short lineWidth;
77     unsigned short dashOffset;
78     unsigned short numInDashList;
79     unsigned char *dash;
80     unsigned int lineStyle:2;
81     unsigned int capStyle:2;
82     unsigned int joinStyle:2;
83     lineGCOps *ops;
84 };
85 
86 /* CoordinateMode for drawing routines */
87 
88 #define CoordModeOrigin         0       /* relative to the origin */
89 #define CoordModePrevious       1       /* relative to previous point */
90 
91 /* LineStyle */
92 
93 #define LineSolid               0
94 #define LineOnOffDash           1
95 #define LineDoubleDash          2
96 
97 /* capStyle */
98 
99 #define CapNotLast              0
100 #define CapButt                 1
101 #define CapRound                2
102 #define CapProjecting           3
103 
104 /* joinStyle */
105 
106 #define JoinMiter               0
107 #define JoinRound               1
108 #define JoinBevel               2
109 
110 extern void spice_canvas_zero_line(lineGC *pgc,
111                                    int mode,
112                                    int num_points,
113                                    SpicePoint * points);
114 extern void spice_canvas_zero_dash_line(lineGC * pgc,
115                                         int mode,
116                                         int n_points,
117                                         SpicePoint * points);
118 extern void spice_canvas_wide_dash_line(lineGC * pGC,
119                                         int mode,
120                                         int num_points,
121                                         SpicePoint * points);
122 extern void spice_canvas_wide_line(lineGC *pGC,
123                                    int mode,
124                                    int num_points,
125                                    SpicePoint * points);
126 extern int spice_canvas_clip_spans(pixman_region32_t *clip_region,
127                                    SpicePoint *points,
128                                    int *widths,
129                                    int num_spans,
130                                    SpicePoint *new_points,
131                                    int *new_widths,
132                                    int sorted);
133 
134 SPICE_END_DECLS
135 
136 #endif // H_SPICE_COMMON_LINES
137