6eeff94c4e4cccece6a4d42f8f30987cd7485a32
1 #ifndef INKSCAPE_LIVEPATHEFFECT_H
2 #define INKSCAPE_LIVEPATHEFFECT_H
4 /*
5 * Inkscape::LivePathEffect
6 *
7 * Copyright (C) Johan Engelen 2007-2008 <j.b.c.engelen@utwente.nl>
8 *
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
13 #include "display/display-forward.h"
14 #include <map>
15 #include <glibmm/ustring.h>
16 #include <2geom/path.h>
17 #include "ui/widget/registry.h"
18 #include "util/enums.h"
19 #include "sp-lpe-item.h"
20 #include "knotholder.h"
21 #include "parameter/bool.h"
23 #define LPE_CONVERSION_TOLERANCE 0.01 // FIXME: find good solution for this.
25 #define LPE_ENABLE_TEST_EFFECTS
27 struct SPDocument;
28 struct SPDesktop;
29 struct SPItem;
30 class SPNodeContext;
31 class NArtBpath;
32 struct LivePathEffectObject;
34 namespace Gtk {
35 class Widget;
36 class VBox;
37 class Tooltips;
38 }
40 namespace Geom {
41 class Matrix;
42 }
44 namespace Inkscape {
46 namespace XML {
47 class Node;
48 }
50 namespace NodePath {
51 class Path ;
52 }
54 namespace LivePathEffect {
56 enum EffectType {
57 BEND_PATH = 0,
58 PATTERN_ALONG_PATH,
59 SKETCH,
60 VONKOCH,
61 KNOT,
62 #ifdef LPE_ENABLE_TEST_EFFECTS
63 DOEFFECTSTACK_TEST,
64 #endif
65 GEARS,
66 CURVE_STITCH,
67 CIRCLE_WITH_RADIUS,
68 PERSPECTIVE_PATH,
69 SPIRO,
70 LATTICE,
71 ENVELOPE,
72 CONSTRUCT_GRID,
73 PERP_BISECTOR,
74 TANGENT_TO_CURVE,
75 MIRROR_REFLECT,
76 CIRCLE_3PTS,
77 ANGLE_BISECTOR,
78 INVALID_LPE // This must be last
79 };
81 extern const Util::EnumData<EffectType> LPETypeData[INVALID_LPE];
82 extern const Util::EnumDataConverter<EffectType> LPETypeConverter;
84 enum LPEPathFlashType {
85 SUPPRESS_FLASH,
86 // PERMANENT_FLASH,
87 DEFAULT
88 };
90 class Effect {
91 public:
92 static Effect* New(EffectType lpenr, LivePathEffectObject *lpeobj);
93 static void createAndApply(const char* name, SPDocument *doc, SPItem *item);
94 static void createAndApply(EffectType type, SPDocument *doc, SPItem *item);
96 virtual ~Effect();
98 EffectType effectType ();
100 virtual void doOnApply (SPLPEItem *lpeitem);
101 virtual void doBeforeEffect (SPLPEItem *lpeitem);
103 void writeParamsToSVG();
105 virtual void acceptParamPath (SPPath *param_path);
106 virtual int acceptsNumParams() { return 0; }
107 void doAcceptPathPreparations(SPLPEItem *lpeitem);
109 inline bool pathParamAccepted() { return done_pathparam_set; }
111 virtual void doEffect (SPCurve * curve);
113 virtual Gtk::Widget * newWidget(Gtk::Tooltips * tooltips);
115 virtual void resetDefaults(SPItem * item);
117 virtual void setup_nodepath(Inkscape::NodePath::Path *np);
119 virtual void transform_multiply(Geom::Matrix const& postmul, bool set);
121 // TODO: providesKnotholder() is currently used as an indicator of whether a nodepath is
122 // created for an item or not. When we allow both at the same time, this needs rethinking!
123 bool providesKnotholder() { return (kh_entity_vector.size() > 0); }
124 // TODO: in view of providesOwnFlashPaths() below, this is somewhat redundant
125 // (but spiro lpe still needs it!)
126 virtual LPEPathFlashType pathFlashType() { return DEFAULT; }
127 void addHandles(KnotHolder *knotholder, SPDesktop *desktop, SPItem *item);
129 void addHelperPaths(SPLPEItem *lpeitem, SPDesktop *desktop);
130 inline bool providesOwnFlashPaths() {
131 return provides_own_flash_paths || show_orig_path;
132 }
133 inline bool showOrigPath() { return show_orig_path; }
135 Glib::ustring getName();
136 Inkscape::XML::Node * getRepr();
137 SPDocument * getSPDoc();
138 LivePathEffectObject * getLPEObj() {return lpeobj;};
139 Parameter * getParameter(const char * key);
141 void readallParameters(Inkscape::XML::Node * repr);
142 void setParameter(const gchar * key, const gchar * new_value);
144 inline bool isVisible() { return is_visible; }
146 void editNextParamOncanvas(SPItem * item, SPDesktop * desktop);
148 protected:
149 Effect(LivePathEffectObject *lpeobject);
151 // provide a set of doEffect functions so the developer has a choice
152 // of what kind of input/output parameters he desires.
153 // the order in which they appear is the order in which they are
154 // called by this base class. (i.e. doEffect(SPCurve * curve) defaults to calling
155 // doEffect(std::vector<Geom::Path> )
156 virtual std::vector<Geom::Path>
157 doEffect_path (std::vector<Geom::Path> const & path_in);
158 virtual Geom::Piecewise<Geom::D2<Geom::SBasis> >
159 doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in);
161 void registerParameter(Parameter * param);
162 void registerKnotHolderHandle(KnotHolderEntity* entity, const char* descr);
163 void addPointParamHandles(KnotHolder *knotholder, SPDesktop *desktop, SPItem *item);
164 Parameter * getNextOncanvasEditableParam();
166 virtual void addHelperPathsImpl(SPLPEItem *lpeitem, SPDesktop *desktop);
168 std::vector<Parameter *> param_vector;
169 std::vector<std::pair<KnotHolderEntity*, const char*> > kh_entity_vector;
170 int oncanvasedit_it;
171 BoolParam is_visible;
172 bool done_pathparam_set;
174 bool show_orig_path; // set this to true in derived effects to automatically have the original
175 // path displayed as helperpath
177 Inkscape::UI::Widget::Registry wr;
179 LivePathEffectObject *lpeobj;
181 // this boolean defaults to false, it concatenates the input path to one pwd2,
182 // instead of normally 'splitting' the path into continuous pwd2 paths.
183 bool concatenate_before_pwd2;
185 private:
186 bool provides_own_flash_paths; // if true, the standard flash path is suppressed
188 Effect(const Effect&);
189 Effect& operator=(const Effect&);
190 };
193 } //namespace LivePathEffect
194 } //namespace Inkscape
196 #endif
198 /*
199 Local Variables:
200 mode:c++
201 c-file-style:"stroustrup"
202 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
203 indent-tabs-mode:nil
204 fill-column:99
205 End:
206 */
207 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :