1 #ifndef SP_DYNA_DRAW_CONTEXT_H_SEEN
2 #define SP_DYNA_DRAW_CONTEXT_H_SEEN
4 /*
5 * Handwriting-like drawing mode
6 *
7 * Authors:
8 * Mitsuru Oka <oka326@parkcity.ne.jp>
9 * Lauris Kaplinski <lauris@kaplinski.com>
10 *
11 * The original dynadraw code:
12 * Paul Haeberli <paul@sgi.com>
13 *
14 * Copyright (C) 1998 The Free Software Foundation
15 * Copyright (C) 1999-2002 authors
16 * Copyright (C) 2001-2002 Ximian, Inc.
17 *
18 * Released under GNU GPL, read the file 'COPYING' for more information
19 */
21 #include "event-context.h"
22 #include <display/display-forward.h>
23 #include <libnr/nr-point.h>
25 #define SP_TYPE_DYNA_DRAW_CONTEXT (sp_dyna_draw_context_get_type())
26 #define SP_DYNA_DRAW_CONTEXT(o) (GTK_CHECK_CAST((o), SP_TYPE_DYNA_DRAW_CONTEXT, SPDynaDrawContext))
27 #define SP_DYNA_DRAW_CONTEXT_CLASS(k) (GTK_CHECK_CLASS_CAST((k), SP_TYPE_DYNA_DRAW_CONTEXT, SPDynaDrawContextClass))
28 #define SP_IS_DYNA_DRAW_CONTEXT(o) (GTK_CHECK_TYPE((o), SP_TYPE_DYNA_DRAW_CONTEXT))
29 #define SP_IS_DYNA_DRAW_CONTEXT_CLASS(k) (GTK_CHECK_CLASS_TYPE((k), SP_TYPE_DYNA_DRAW_CONTEXT))
31 class SPDynaDrawContext;
32 class SPDynaDrawContextClass;
34 #define SAMPLING_SIZE 8 /* fixme: ?? */
36 #define DDC_MIN_PRESSURE 0.0
37 #define DDC_MAX_PRESSURE 1.0
38 #define DDC_DEFAULT_PRESSURE 1.0
40 #define DDC_MIN_TILT -1.0
41 #define DDC_MAX_TILT 1.0
42 #define DDC_DEFAULT_TILT 0.0
44 struct SPDynaDrawContext
45 {
46 SPEventContext event_context;
48 /** accumulated shape which ultimately goes in svg:path */
49 SPCurve *accumulated;
51 /** canvas items for "comitted" segments */
52 GSList *segments;
54 /** canvas item for red "leading" segment */
55 SPCanvasItem *currentshape;
56 /** shape of red "leading" segment */
57 SPCurve *currentcurve;
59 /** left edge of the stroke; combined to get accumulated */
60 SPCurve *cal1;
61 /** right edge of the stroke; combined to get accumulated */
62 SPCurve *cal2;
64 /** left edge points for this segment */
65 NR::Point point1[SAMPLING_SIZE];
66 /** right edge points for this segment */
67 NR::Point point2[SAMPLING_SIZE];
68 /** number of edge points for this segment */
69 gint npoints;
71 /* repr */
72 Inkscape::XML::Node *repr;
74 /* DynaDraw */
75 NR::Point cur;
76 NR::Point vel;
77 double vel_max;
78 NR::Point acc;
79 NR::Point ang;
80 NR::Point last;
81 NR::Point del;
82 /* extended input data */
83 gdouble pressure;
84 gdouble xtilt;
85 gdouble ytilt;
86 /* attributes */
87 guint dragging : 1; /* mouse state: mouse is dragging */
88 guint usepressure : 1;
89 guint usetilt : 1;
90 double mass, drag;
91 double angle;
92 double width;
94 double vel_thin;
95 double flatness;
96 double tremor;
97 double cap_rounding;
99 Inkscape::MessageContext *_message_context;
101 bool is_drawing;
103 /** uses absolute width independent of zoom */
104 bool abs_width;
106 /** newly created object remain selected */
107 bool keep_selected;
109 double hatch_spacing;
110 double hatch_spacing_step;
111 SPItem *hatch_item;
112 Path *hatch_livarot_path;
113 std::list<double> hatch_nearest_past;
114 std::list<double> hatch_pointer_past;
115 NR::Point hatch_last_nearest, hatch_last_pointer;
116 NR::Point hatch_vector_accumulated;
117 bool hatch_escaped;
118 SPCanvasItem *hatch_area;
120 bool trace_bg;
121 };
123 struct SPDynaDrawContextClass
124 {
125 SPEventContextClass parent_class;
126 };
128 GType sp_dyna_draw_context_get_type(void);
130 #endif // SP_DYNA_DRAW_CONTEXT_H_SEEN
132 /*
133 Local Variables:
134 mode:c++
135 c-file-style:"stroustrup"
136 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
137 indent-tabs-mode:nil
138 fill-column:99
139 End:
140 */
141 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :