1 #ifndef SEEN_PEN_CONTEXT_H
2 #define SEEN_PEN_CONTEXT_H
4 /** \file
5 * SPPenContext: a context for pen tool events.
6 */
8 #include "draw-context.h"
9 #include "live_effects/effect.h"
11 #define SP_TYPE_PEN_CONTEXT (sp_pen_context_get_type())
12 #define SP_PEN_CONTEXT(o) (G_TYPE_CHECK_INSTANCE_CAST((o), SP_TYPE_PEN_CONTEXT, SPPenContext))
13 #define SP_PEN_CONTEXT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), SP_TYPE_PEN_CONTEXT, SPPenContextClass))
14 #define SP_IS_PEN_CONTEXT(o) (G_TYPE_CHECK_INSTANCE_TYPE((o), SP_TYPE_PEN_CONTEXT))
15 #define SP_IS_PEN_CONTEXT_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE((k), SP_TYPE_PEN_CONTEXT))
17 enum {
18 SP_PEN_CONTEXT_POINT,
19 SP_PEN_CONTEXT_CONTROL,
20 SP_PEN_CONTEXT_CLOSE,
21 SP_PEN_CONTEXT_STOP
22 };
24 enum {
25 SP_PEN_CONTEXT_MODE_CLICK,
26 SP_PEN_CONTEXT_MODE_DRAG
27 };
29 /**
30 * SPPenContext: a context for pen tool events.
31 */
32 struct SPPenContext : public SPDrawContext {
33 Geom::Point p[5];
35 /** \invar npoints in {0, 2, 5}. */
36 // npoints somehow determines the type of the node (what does it mean, exactly? the number of Bezier handles?)
37 gint npoints;
39 unsigned int mode : 1;
40 unsigned int state : 2;
42 bool polylines_only;
43 bool polylines_paraxial;
44 int num_clicks;
46 unsigned int expecting_clicks_for_LPE; // if positive, finish the path after this many clicks
47 Inkscape::LivePathEffect::Effect *waiting_LPE; // if NULL, waiting_LPE_type in SPDrawContext is taken into account
48 SPLPEItem *waiting_item;
50 SPCanvasItem *c0, *c1, *cl0, *cl1;
52 unsigned int events_disabled : 1;
53 };
55 /// The SPPenContext vtable (empty).
56 struct SPPenContextClass : public SPEventContextClass { };
58 GType sp_pen_context_get_type();
60 inline bool sp_pen_context_has_waiting_LPE(SPPenContext *pc) {
61 // note: waiting_LPE_type is defined in SPDrawContext
62 return (pc->waiting_LPE != NULL ||
63 pc->waiting_LPE_type != Inkscape::LivePathEffect::INVALID_LPE);
64 }
66 void sp_pen_context_set_polyline_mode(SPPenContext *const pc);
67 void sp_pen_context_wait_for_LPE_mouse_clicks(SPPenContext *pc, Inkscape::LivePathEffect::EffectType effect_type,
68 unsigned int num_clicks, bool use_polylines = true);
69 void sp_pen_context_cancel_waiting_for_LPE(SPPenContext *pc);
70 void sp_pen_context_put_into_waiting_mode(SPDesktop *desktop, Inkscape::LivePathEffect::EffectType effect_type,
71 unsigned int num_clicks, bool use_polylines = true);
73 #endif /* !SEEN_PEN_CONTEXT_H */
75 /*
76 Local Variables:
77 mode:c++
78 c-file-style:"stroustrup"
79 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
80 indent-tabs-mode:nil
81 fill-column:99
82 End:
83 */
84 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :