1 #define __BOX3D_SIDE_C__
3 /*
4 * 3D box face implementation
5 *
6 * Authors:
7 * Maximilian Albert <Anhalter42@gmx.de>
8 *
9 * Copyright (C) 2007 Authors
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #include "box3d-side.h"
15 #include "document.h"
16 #include "xml/document.h"
17 #include "xml/repr.h"
18 #include "display/curve.h"
19 #include "svg/svg.h"
20 #include "attributes.h"
21 #include "inkscape.h"
22 #include "persp3d.h"
23 #include "box3d-context.h"
24 #include "prefs-utils.h"
25 #include "desktop-style.h"
26 #include "box3d.h"
28 static void box3d_side_class_init (Box3DSideClass *klass);
29 static void box3d_side_init (Box3DSide *side);
31 static void box3d_side_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
32 static Inkscape::XML::Node *box3d_side_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
33 static void box3d_side_set (SPObject *object, unsigned int key, const gchar *value);
34 static void box3d_side_update (SPObject *object, SPCtx *ctx, guint flags);
36 static void box3d_side_set_shape (SPShape *shape);
38 static void box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]);
40 static SPShapeClass *parent_class;
42 GType
43 box3d_side_get_type (void)
44 {
45 static GType type = 0;
47 if (!type) {
48 GTypeInfo info = {
49 sizeof (Box3DSideClass),
50 NULL, NULL,
51 (GClassInitFunc) box3d_side_class_init,
52 NULL, NULL,
53 sizeof (Box3DSide),
54 16,
55 (GInstanceInitFunc) box3d_side_init,
56 NULL, /* value_table */
57 };
58 type = g_type_register_static (SP_TYPE_SHAPE, "Box3DSide", &info, (GTypeFlags)0);
59 }
60 return type;
61 }
63 static void
64 box3d_side_class_init (Box3DSideClass *klass)
65 {
66 GObjectClass * gobject_class;
67 SPObjectClass * sp_object_class;
68 SPItemClass * item_class;
69 SPPathClass * path_class;
70 SPShapeClass * shape_class;
72 gobject_class = (GObjectClass *) klass;
73 sp_object_class = (SPObjectClass *) klass;
74 item_class = (SPItemClass *) klass;
75 path_class = (SPPathClass *) klass;
76 shape_class = (SPShapeClass *) klass;
78 parent_class = (SPShapeClass *)g_type_class_ref (SP_TYPE_SHAPE);
80 sp_object_class->build = box3d_side_build;
81 sp_object_class->write = box3d_side_write;
82 sp_object_class->set = box3d_side_set;
83 sp_object_class->update = box3d_side_update;
85 shape_class->set_shape = box3d_side_set_shape;
86 }
88 static void
89 box3d_side_init (Box3DSide * side)
90 {
91 side->dir1 = Box3D::NONE;
92 side->dir2 = Box3D::NONE;
93 side->front_or_rear = Box3D::FRONT;
94 }
96 static void
97 box3d_side_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr)
98 {
99 if (((SPObjectClass *) parent_class)->build)
100 ((SPObjectClass *) parent_class)->build (object, document, repr);
102 sp_object_read_attr(object, "inkscape:box3dsidetype");
103 }
105 static Inkscape::XML::Node *
106 box3d_side_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
107 {
108 Box3DSide *side = SP_BOX3D_SIDE (object);
110 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
111 // this is where we end up when saving as plain SVG (also in other circumstances?)
112 // thus we don' set "sodipodi:type" so that the box is only saved as an ordinary svg:path
113 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
114 repr = xml_doc->createElement("svg:path");
115 }
117 if (flags & SP_OBJECT_WRITE_EXT) {
118 sp_repr_set_int(repr, "inkscape:box3dsidetype", side->dir1 ^ side->dir2 ^ side->front_or_rear);
119 }
121 sp_shape_set_shape ((SPShape *) object);
123 /* Duplicate the path */
124 SPCurve *curve = ((SPShape *) object)->curve;
125 //Nulls might be possible if this called iteratively
126 if ( !curve ) {
127 return NULL;
128 }
129 NArtBpath *bpath = SP_CURVE_BPATH(curve);
130 if ( !bpath ) {
131 return NULL;
132 }
133 char *d = sp_svg_write_path ( bpath );
134 repr->setAttribute("d", d);
135 g_free (d);
137 if (((SPObjectClass *) (parent_class))->write)
138 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
140 return repr;
141 }
143 static void
144 box3d_side_set (SPObject *object, unsigned int key, const gchar *value)
145 {
146 Box3DSide *side = SP_BOX3D_SIDE (object);
148 // TODO: In case the box was recreated (by undo, e.g.) we need to recreate the path
149 // (along with other info?) from the parent box.
151 /* fixme: we should really collect updates */
152 switch (key) {
153 case SP_ATTR_INKSCAPE_BOX3D_SIDE_TYPE:
154 if (value) {
155 guint desc = atoi (value);
157 if (!Box3D::is_face_id(desc)) {
158 g_print ("desc is not a face id: =%s=\n", value);
159 }
160 g_return_if_fail (Box3D::is_face_id (desc));
161 Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
162 plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
163 side->dir1 = Box3D::extract_first_axis_direction(plane);
164 side->dir2 = Box3D::extract_second_axis_direction(plane);
165 side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
167 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
168 }
169 break;
170 default:
171 if (((SPObjectClass *) parent_class)->set)
172 ((SPObjectClass *) parent_class)->set (object, key, value);
173 break;
174 }
175 }
177 static void
178 box3d_side_update (SPObject *object, SPCtx *ctx, guint flags)
179 {
180 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
181 flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // since we change the description, it's not a "just translation" anymore
182 }
184 if (flags & (SP_OBJECT_MODIFIED_FLAG |
185 SP_OBJECT_STYLE_MODIFIED_FLAG |
186 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
187 sp_shape_set_shape ((SPShape *) object);
188 }
190 if (((SPObjectClass *) parent_class)->update)
191 ((SPObjectClass *) parent_class)->update (object, ctx, flags);
192 }
194 void
195 box3d_side_position_set (Box3DSide *side) {
196 box3d_side_set_shape (SP_SHAPE (side));
198 /* This call is responsible for live update of the sides during the initial drag */
199 SP_OBJECT(side)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
200 }
202 void
203 box3d_side_set_shape (SPShape *shape)
204 {
205 Box3DSide *side = SP_BOX3D_SIDE (shape);
206 if (!SP_OBJECT_DOCUMENT(side)->root) {
207 // avoid a warning caused by sp_document_height() (which is called from sp_item_i2d_affine() below)
208 // when reading a file containing 3D boxes
209 return;
210 }
212 SPObject *parent = SP_OBJECT(side)->parent;
213 if (!SP_IS_BOX3D(parent)) {
214 g_warning ("Parent of 3D box side is not a 3D box.\n");
215 return;
216 }
217 SPBox3D *box = SP_BOX3D(parent);
219 Persp3D *persp = box3d_side_perspective(side);
220 if (!persp) {
221 return;
222 }
224 SPCurve *c = sp_curve_new ();
225 // TODO: Draw the correct quadrangle here
226 // To do this, determine the perspective of the box, the orientation of the side (e.g., XY-FRONT)
227 // compute the coordinates of the corners in P^3, project them onto the canvas, and draw the
228 // resulting path.
230 unsigned int corners[4];
231 box3d_side_compute_corner_ids(side, corners);
233 sp_curve_moveto (c, box3d_get_corner_screen(box, corners[0]));
234 sp_curve_lineto (c, box3d_get_corner_screen(box, corners[1]));
235 sp_curve_lineto (c, box3d_get_corner_screen(box, corners[2]));
236 sp_curve_lineto (c, box3d_get_corner_screen(box, corners[3]));
238 sp_curve_closepath (c);
239 sp_lpe_item_perform_path_effect(SP_LPE_ITEM (side), c);
240 sp_shape_set_curve_insync (SP_SHAPE (side), c, TRUE);
241 sp_curve_unref (c);
242 }
244 void
245 box3d_side_apply_style (Box3DSide *side) {
246 Inkscape::XML::Node *repr_face = SP_OBJECT_REPR(SP_OBJECT(side));
248 gchar *descr = g_strconcat ("desktop.", box3d_side_axes_string (side), NULL);
249 const gchar * cur_style = prefs_get_string_attribute(descr, "style");
250 g_free (descr);
252 SPDesktop *desktop = inkscape_active_desktop();
253 bool use_current = prefs_get_int_attribute("tools.shapes.3dbox", "usecurrent", 0);
254 if (use_current && cur_style !=NULL) {
255 /* use last used style */
256 repr_face->setAttribute("style", cur_style);
257 } else {
258 /* use default style */
259 GString *pstring = g_string_new("");
260 g_string_printf (pstring, "tools.shapes.3dbox.%s", box3d_side_axes_string(side));
261 sp_desktop_apply_style_tool (desktop, repr_face, pstring->str, false);
262 }
263 }
265 gchar *
266 box3d_side_axes_string(Box3DSide *side)
267 {
268 GString *pstring = g_string_new("");
269 g_string_printf (pstring, "%s", Box3D::string_from_axes ((Box3D::Axis) (side->dir1 ^ side->dir2)));
270 switch ((Box3D::Axis) (side->dir1 ^ side->dir2)) {
271 case Box3D::XY:
272 g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "front" : "rear");
273 break;
274 case Box3D::XZ:
275 g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "top" : "bottom");
276 break;
277 case Box3D::YZ:
278 g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "right" : "left");
279 break;
280 default:
281 break;
282 }
283 return pstring->str;
284 }
286 static void
287 box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]) {
288 Box3D::Axis orth = Box3D::third_axis_direction (side->dir1, side->dir2);
290 corners[0] = (side->front_or_rear ? orth : 0);
291 corners[1] = corners[0] ^ side->dir1;
292 corners[2] = corners[0] ^ side->dir1 ^ side->dir2;
293 corners[3] = corners[0] ^ side->dir2;
294 }
296 Persp3D *
297 box3d_side_perspective(Box3DSide *side) {
298 return SP_BOX3D(SP_OBJECT(side)->parent)->persp_ref->getObject();
299 }
301 Inkscape::XML::Node *
302 box3d_side_convert_to_path(Box3DSide *side) {
303 // TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example)
304 SPDocument *doc = SP_OBJECT_DOCUMENT(side);
305 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
307 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
308 repr->setAttribute("d", SP_OBJECT_REPR(side)->attribute("d"));
309 repr->setAttribute("style", SP_OBJECT_REPR(side)->attribute("style"));
311 return repr;
312 }
314 /*
315 Local Variables:
316 mode:c++
317 c-file-style:"stroustrup"
318 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
319 indent-tabs-mode:nil
320 fill-column:99
321 End:
322 */
323 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :