487caa09c503923bce9a949f5abdb701814e46cf
1 #define __SP_OBJECT_EDIT_C__
3 /*
4 * Node editing extension to objects
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * Mitsuru Oka
9 *
10 * Licensed under GNU GPL
11 */
13 #ifdef HAVE_CONFIG_H
14 # include "config.h"
15 #endif
19 #include "sp-item.h"
20 #include "sp-rect.h"
21 #include "box3d.h"
22 #include "sp-ellipse.h"
23 #include "sp-star.h"
24 #include "sp-spiral.h"
25 #include "sp-offset.h"
26 #include "sp-flowtext.h"
27 #include "prefs-utils.h"
28 #include "inkscape.h"
29 #include "snap.h"
30 #include "desktop-affine.h"
31 #include <style.h>
32 #include "desktop.h"
33 #include "sp-namedview.h"
35 #include "sp-pattern.h"
36 #include "sp-path.h"
38 #include <glibmm/i18n.h>
40 #include "object-edit.h"
42 #include <libnr/nr-scale-ops.h>
45 #include "xml/repr.h"
47 #include "isnan.h"
49 #define sp_round(v,m) (((v) < 0.0) ? ((ceil((v) / (m) - 0.5)) * (m)) : ((floor((v) / (m) + 0.5)) * (m)))
51 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop);
52 //static
53 SPKnotHolder *sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop, guint number_of_handles);
54 static SPKnotHolder *sp_arc_knot_holder(SPItem *item, SPDesktop *desktop);
55 static SPKnotHolder *sp_star_knot_holder(SPItem *item, SPDesktop *desktop);
56 static SPKnotHolder *sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop);
57 static SPKnotHolder *sp_offset_knot_holder(SPItem *item, SPDesktop *desktop);
58 static SPKnotHolder *sp_misc_knot_holder(SPItem *item, SPDesktop *desktop);
59 static SPKnotHolder *sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop);
60 static void sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder);
62 SPKnotHolder *
63 sp_item_knot_holder(SPItem *item, SPDesktop *desktop)
64 {
65 if (SP_IS_RECT(item)) {
66 return sp_rect_knot_holder(item, desktop);
67 } else if (SP_IS_3DBOX(item)) {
68 return sp_3dbox_knot_holder(item, desktop, SP3DBoxContext::number_of_handles);
69 } else if (SP_IS_ARC(item)) {
70 return sp_arc_knot_holder(item, desktop);
71 } else if (SP_IS_STAR(item)) {
72 return sp_star_knot_holder(item, desktop);
73 } else if (SP_IS_SPIRAL(item)) {
74 return sp_spiral_knot_holder(item, desktop);
75 } else if (SP_IS_OFFSET(item)) {
76 return sp_offset_knot_holder(item, desktop);
77 } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
78 return sp_flowtext_knot_holder(item, desktop);
79 } else {
80 return sp_misc_knot_holder(item, desktop);
81 }
83 return NULL;
84 }
87 /* Pattern manipulation */
89 static gdouble sp_pattern_extract_theta(SPPattern *pat, gdouble scale)
90 {
91 gdouble theta = asin(pat->patternTransform[1] / scale);
92 if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
93 return theta;
94 }
96 static gdouble sp_pattern_extract_scale(SPPattern *pat)
97 {
98 gdouble s = pat->patternTransform[1];
99 gdouble c = pat->patternTransform[0];
100 gdouble xscale = sqrt(c * c + s * s);
101 return xscale;
102 }
104 static NR::Point sp_pattern_extract_trans(SPPattern const *pat)
105 {
106 return NR::Point(pat->patternTransform[4], pat->patternTransform[5]);
107 }
109 static void
110 sp_pattern_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
111 {
112 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
114 NR::Point p_snapped = p;
116 if ( state & GDK_CONTROL_MASK ) {
117 if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
118 p_snapped[NR::Y] = origin[NR::Y];
119 } else {
120 p_snapped[NR::X] = origin[NR::X];
121 }
122 }
124 if (state) {
125 NR::Point const q = p_snapped - sp_pattern_extract_trans(pat);
126 sp_item_adjust_pattern(item, NR::Matrix(NR::translate(q)));
127 }
129 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
130 }
133 static NR::Point sp_pattern_xy_get(SPItem *item)
134 {
135 SPPattern const *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
136 return sp_pattern_extract_trans(pat);
137 }
139 static NR::Point sp_pattern_angle_get(SPItem *item)
140 {
141 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
143 gdouble x = (pattern_width(pat)*0.5);
144 gdouble y = 0;
145 NR::Point delta = NR::Point(x,y);
146 gdouble scale = sp_pattern_extract_scale(pat);
147 gdouble theta = sp_pattern_extract_theta(pat, scale);
148 delta = delta * NR::Matrix(NR::rotate(theta))*NR::Matrix(NR::scale(scale,scale));
149 delta = delta + sp_pattern_extract_trans(pat);
150 return delta;
151 }
153 static void
154 sp_pattern_angle_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
155 {
156 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
158 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
160 // get the angle from pattern 0,0 to the cursor pos
161 NR::Point delta = p - sp_pattern_extract_trans(pat);
162 gdouble theta = atan2(delta);
164 if ( state & GDK_CONTROL_MASK ) {
165 theta = sp_round(theta, M_PI/snaps);
166 }
168 // get the scale from the current transform so we can keep it.
169 gdouble scl = sp_pattern_extract_scale(pat);
170 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
171 NR::Point const t = sp_pattern_extract_trans(pat);
172 rot[4] = t[NR::X];
173 rot[5] = t[NR::Y];
174 sp_item_adjust_pattern(item, rot, true);
175 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
176 }
178 static void
179 sp_pattern_scale_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
180 {
181 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
183 // Get the scale from the position of the knotholder,
184 NR::Point d = p - sp_pattern_extract_trans(pat);
185 gdouble s = NR::L2(d);
186 gdouble pat_x = pattern_width(pat) * 0.5;
187 gdouble pat_y = pattern_height(pat) * 0.5;
188 gdouble pat_h = hypot(pat_x, pat_y);
189 gdouble scl = s / pat_h;
191 // get angle from current transform, (need get current scale first to calculate angle)
192 gdouble oldscale = sp_pattern_extract_scale(pat);
193 gdouble theta = sp_pattern_extract_theta(pat,oldscale);
195 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
196 NR::Point const t = sp_pattern_extract_trans(pat);
197 rot[4] = t[NR::X];
198 rot[5] = t[NR::Y];
199 sp_item_adjust_pattern(item, rot, true);
200 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
201 }
204 static NR::Point sp_pattern_scale_get(SPItem *item)
205 {
206 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
208 gdouble x = pattern_width(pat)*0.5;
209 gdouble y = pattern_height(pat)*0.5;
210 NR::Point delta = NR::Point(x,y);
211 NR::Matrix a = pat->patternTransform;
212 a[4] = 0;
213 a[5] = 0;
214 delta = delta * a;
215 delta = delta + sp_pattern_extract_trans(pat);
216 return delta;
217 }
219 /* SPRect */
221 static NR::Point snap_knot_position(SPItem *item, NR::Point const &p)
222 {
223 SPDesktop const *desktop = inkscape_active_desktop();
224 NR::Matrix const i2d (sp_item_i2d_affine (item));
225 NR::Point s = p * i2d;
226 SnapManager const &m = desktop->namedview->snap_manager;
227 s = m.freeSnap(Inkscape::Snapper::BBOX_POINT | Inkscape::Snapper::SNAP_POINT, s, item).getPoint();
228 return s * i2d.inverse();
229 }
231 static NR::Point sp_rect_rx_get(SPItem *item)
232 {
233 SPRect *rect = SP_RECT(item);
235 return NR::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed);
236 }
238 static void sp_rect_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
239 {
240 SPRect *rect = SP_RECT(item);
242 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
243 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
244 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
246 if (state & GDK_CONTROL_MASK) {
247 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
248 rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, temp);
249 rect->rx._set = rect->ry._set = true;
251 } else {
252 rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, rect->width.computed / 2.0);
253 rect->rx._set = true;
254 }
256 ((SPObject*)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
257 }
260 static NR::Point sp_rect_ry_get(SPItem *item)
261 {
262 SPRect *rect = SP_RECT(item);
264 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed);
265 }
267 static void sp_rect_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
268 {
269 SPRect *rect = SP_RECT(item);
271 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
272 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
273 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
275 if (state & GDK_CONTROL_MASK) {
276 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
277 rect->rx.computed = rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed, 0.0, temp);
278 rect->ry._set = rect->rx._set = true;
279 } else {
280 if (!rect->rx._set || rect->rx.computed == 0) {
281 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
282 0.0,
283 MIN(rect->height.computed / 2.0, rect->width.computed / 2.0));
284 } else {
285 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
286 0.0,
287 rect->height.computed / 2.0);
288 }
290 rect->ry._set = true;
291 }
293 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
294 }
296 /**
297 * Remove rounding from a rectangle.
298 */
299 static void rect_remove_rounding(SPRect *rect)
300 {
301 SP_OBJECT_REPR(rect)->setAttribute("rx", NULL);
302 SP_OBJECT_REPR(rect)->setAttribute("ry", NULL);
303 }
305 /**
306 * Called when the horizontal rounding radius knot is clicked.
307 */
308 static void sp_rect_rx_knot_click(SPItem *item, guint state)
309 {
310 SPRect *rect = SP_RECT(item);
312 if (state & GDK_SHIFT_MASK) {
313 rect_remove_rounding(rect);
314 } else if (state & GDK_CONTROL_MASK) {
315 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
316 SP_OBJECT_REPR(rect)->setAttribute("ry", SP_OBJECT_REPR(rect)->attribute("rx"));
317 }
318 }
320 /**
321 * Called when the vertical rounding radius knot is clicked.
322 */
323 static void sp_rect_ry_knot_click(SPItem *item, guint state)
324 {
325 SPRect *rect = SP_RECT(item);
327 if (state & GDK_SHIFT_MASK) {
328 rect_remove_rounding(rect);
329 } else if (state & GDK_CONTROL_MASK) {
330 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
331 SP_OBJECT_REPR(rect)->setAttribute("rx", SP_OBJECT_REPR(rect)->attribute("ry"));
332 }
333 }
335 #define SGN(x) ((x)>0?1:((x)<0?-1:0))
337 static void sp_rect_clamp_radii(SPRect *rect)
338 {
339 // clamp rounding radii so that they do not exceed width/height
340 if (2 * rect->rx.computed > rect->width.computed) {
341 rect->rx.computed = 0.5 * rect->width.computed;
342 rect->rx._set = true;
343 }
344 if (2 * rect->ry.computed > rect->height.computed) {
345 rect->ry.computed = 0.5 * rect->height.computed;
346 rect->ry._set = true;
347 }
348 }
350 static NR::Point sp_rect_wh_get(SPItem *item)
351 {
352 SPRect *rect = SP_RECT(item);
354 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
355 }
357 static void sp_rect_wh_set_internal(SPRect *rect, NR::Point const &p, NR::Point const &origin, guint state)
358 {
359 NR::Point const s = snap_knot_position(rect, p);
361 if (state & GDK_CONTROL_MASK) {
362 // original width/height when drag started
363 gdouble const w_orig = (origin[NR::X] - rect->x.computed);
364 gdouble const h_orig = (origin[NR::Y] - rect->y.computed);
366 //original ratio
367 gdouble const ratio = (w_orig / h_orig);
369 // mouse displacement since drag started
370 gdouble const minx = s[NR::X] - origin[NR::X];
371 gdouble const miny = s[NR::Y] - origin[NR::Y];
373 if (fabs(minx) > fabs(miny)) {
375 // snap to horizontal or diagonal
376 rect->width.computed = MAX(w_orig + minx, 0);
377 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
378 // closer to the diagonal and in same-sign quarters, change both using ratio
379 rect->height.computed = MAX(h_orig + minx / ratio, 0);
380 } else {
381 // closer to the horizontal, change only width, height is h_orig
382 rect->height.computed = MAX(h_orig, 0);
383 }
385 } else {
386 // snap to vertical or diagonal
387 rect->height.computed = MAX(h_orig + miny, 0);
388 if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) {
389 // closer to the diagonal and in same-sign quarters, change both using ratio
390 rect->width.computed = MAX(w_orig + miny * ratio, 0);
391 } else {
392 // closer to the vertical, change only height, width is w_orig
393 rect->width.computed = MAX(w_orig, 0);
394 }
395 }
397 rect->width._set = rect->height._set = true;
399 } else {
400 // move freely
401 rect->width.computed = MAX(s[NR::X] - rect->x.computed, 0);
402 rect->height.computed = MAX(s[NR::Y] - rect->y.computed, 0);
403 rect->width._set = rect->height._set = true;
404 }
406 sp_rect_clamp_radii(rect);
408 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
409 }
411 static void sp_rect_wh_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
412 {
413 SPRect *rect = SP_RECT(item);
415 sp_rect_wh_set_internal(rect, p, origin, state);
416 }
418 static NR::Point sp_rect_xy_get(SPItem *item)
419 {
420 SPRect *rect = SP_RECT(item);
422 return NR::Point(rect->x.computed, rect->y.computed);
423 }
425 static void sp_rect_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
426 {
427 SPRect *rect = SP_RECT(item);
429 // opposite corner (unmoved)
430 gdouble opposite_x = (rect->x.computed + rect->width.computed);
431 gdouble opposite_y = (rect->y.computed + rect->height.computed);
433 // original width/height when drag started
434 gdouble w_orig = opposite_x - origin[NR::X];
435 gdouble h_orig = opposite_y - origin[NR::Y];
437 NR::Point const s = snap_knot_position(rect, p);
439 // mouse displacement since drag started
440 gdouble minx = s[NR::X] - origin[NR::X];
441 gdouble miny = s[NR::Y] - origin[NR::Y];
443 if (state & GDK_CONTROL_MASK) {
444 //original ratio
445 gdouble ratio = (w_orig / h_orig);
447 if (fabs(minx) > fabs(miny)) {
449 // snap to horizontal or diagonal
450 rect->x.computed = MIN(s[NR::X], opposite_x);
451 rect->width.computed = MAX(w_orig - minx, 0);
452 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
453 // closer to the diagonal and in same-sign quarters, change both using ratio
454 rect->y.computed = MIN(origin[NR::Y] + minx / ratio, opposite_y);
455 rect->height.computed = MAX(h_orig - minx / ratio, 0);
456 } else {
457 // closer to the horizontal, change only width, height is h_orig
458 rect->y.computed = MIN(origin[NR::Y], opposite_y);
459 rect->height.computed = MAX(h_orig, 0);
460 }
462 } else {
464 // snap to vertical or diagonal
465 rect->y.computed = MIN(s[NR::Y], opposite_y);
466 rect->height.computed = MAX(h_orig - miny, 0);
467 if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
468 // closer to the diagonal and in same-sign quarters, change both using ratio
469 rect->x.computed = MIN(origin[NR::X] + miny * ratio, opposite_x);
470 rect->width.computed = MAX(w_orig - miny * ratio, 0);
471 } else {
472 // closer to the vertical, change only height, width is w_orig
473 rect->x.computed = MIN(origin[NR::X], opposite_x);
474 rect->width.computed = MAX(w_orig, 0);
475 }
477 }
479 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
481 } else {
482 // move freely
483 rect->x.computed = MIN(s[NR::X], opposite_x);
484 rect->width.computed = MAX(w_orig - minx, 0);
485 rect->y.computed = MIN(s[NR::Y], opposite_y);
486 rect->height.computed = MAX(h_orig - miny, 0);
487 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
488 }
490 sp_rect_clamp_radii(rect);
492 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
493 }
495 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop)
496 {
497 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
499 sp_knot_holder_add_full(
500 knot_holder, sp_rect_rx_set, sp_rect_rx_get, sp_rect_rx_knot_click,
501 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
502 _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> to make the vertical "
503 "radius the same"));
505 sp_knot_holder_add_full(
506 knot_holder, sp_rect_ry_set, sp_rect_ry_get, sp_rect_ry_knot_click,
507 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
508 _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> to make the horizontal "
509 "radius the same")
510 );
512 sp_knot_holder_add_full(
513 knot_holder, sp_rect_wh_set, sp_rect_wh_get, NULL,
514 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
515 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
516 "or stretch in one dimension only")
517 );
519 sp_knot_holder_add_full(
520 knot_holder, sp_rect_xy_set, sp_rect_xy_get, NULL,
521 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
522 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
523 "or stretch in one dimension only")
524 );
526 sp_pat_knot_holder(item, knot_holder);
527 return knot_holder;
528 }
530 /* 3D Box */
532 static void sp_3dbox_knot_set(SPItem *item, guint knot_id, Box3D::Axis direction,
533 NR::Point const &new_pos, NR::Point const &origin, guint state)
534 {
535 g_assert(item != NULL);
536 SP3DBox *box = SP_3DBOX(item);
538 // FIXME: Why must the coordinates be flipped vertically???
539 SPDocument *doc = SP_OBJECT_DOCUMENT(box);
540 gdouble height = sp_document_height(doc);
542 NR::Matrix const i2d (sp_item_i2d_affine (item));
543 if (direction == Box3D::Z) {
544 sp_3dbox_move_corner_in_Z_direction (box, knot_id, new_pos * i2d, !(state & GDK_SHIFT_MASK));
545 } else {
546 sp_3dbox_move_corner_in_XY_plane (box, knot_id, new_pos * i2d, (state & GDK_SHIFT_MASK) ? direction : Box3D::XY);
547 }
548 sp_3dbox_update_curves (box);
549 }
551 static NR::Point sp_3dbox_knot_get(SPItem *item, guint knot_id)
552 {
553 g_assert(item != NULL);
554 SP3DBox *box = SP_3DBOX(item);
556 NR::Matrix const i2d (sp_item_i2d_affine (item));
557 return sp_3dbox_get_corner(box, knot_id) * i2d;
558 }
560 static void sp_3dbox_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
561 {
562 sp_3dbox_knot_set (item, 1, Box3D::Y, new_pos, origin, state);
563 }
565 /*
566 static void sp_3dbox_knot1_set_constrained(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
567 {
568 sp_3dbox_knot_set (item, 1, Box3D::Y, new_pos, origin, state ^ GDK_SHIFT_MASK);
569 }
570 */
572 static void sp_3dbox_knot2_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
573 {
574 sp_3dbox_knot_set (item, 2, Box3D::X, new_pos, origin, state);
575 }
577 /*
578 static void sp_3dbox_knot2_set_constrained(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
579 {
580 sp_3dbox_knot_set (item, 2, Box3D::X, new_pos, origin, state ^ GDK_SHIFT_MASK);
581 }
583 static void sp_3dbox_knot3_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
584 {
585 if (!(state & GDK_SHIFT_MASK)) {
586 sp_3dbox_knot_set (item, 3, Box3D::Y, new_pos, origin, state);
587 } else {
588 sp_3dbox_knot_set (item, 3, Box3D::Z, new_pos, origin, state ^ GDK_SHIFT_MASK);
589 }
590 }
591 */
593 static void sp_3dbox_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
594 {
595 sp_3dbox_knot_set (item, 5, Box3D::Z, new_pos, origin, state);
596 }
598 /*
599 static void sp_3dbox_knot7_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
600 {
601 sp_3dbox_knot_set (item, 7, Box3D::Z, new_pos, origin, state);
602 }
603 */
605 // defined a uniform behaviour for all knots
606 static void sp_3dbox_knot_set_uniformly(SPItem *item, guint knot_id, Box3D::Axis direction, NR::Point const &new_pos, NR::Point const &origin, guint state)
607 {
608 g_assert(item != NULL);
609 SP3DBox *box = SP_3DBOX(item);
611 NR::Matrix const i2d (sp_item_i2d_affine (item));
612 if (direction == Box3D::Z) {
613 sp_3dbox_move_corner_in_Z_direction (box, knot_id, new_pos * i2d, !(state & GDK_SHIFT_MASK));
614 } else {
615 sp_3dbox_move_corner_in_Z_direction (box, knot_id, new_pos * i2d, (state & GDK_SHIFT_MASK));
616 }
617 sp_3dbox_update_curves (box);
618 }
620 static void sp_3dbox_knot0_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
621 {
622 sp_3dbox_knot_set_uniformly(item, 0, Box3D::XY, new_pos, origin, state);
623 }
625 static void sp_3dbox_knot1_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
626 {
627 sp_3dbox_knot_set_uniformly(item, 1, Box3D::XY, new_pos, origin, state);
628 }
630 static void sp_3dbox_knot2_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
631 {
632 sp_3dbox_knot_set_uniformly(item, 2, Box3D::XY, new_pos, origin, state);
633 }
635 static void sp_3dbox_knot3_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
636 {
637 sp_3dbox_knot_set_uniformly(item, 3, Box3D::XY, new_pos, origin, state);
638 }
640 static void sp_3dbox_knot4_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
641 {
642 sp_3dbox_knot_set_uniformly(item, 4, Box3D::Z, new_pos, origin, state);
643 }
645 static void sp_3dbox_knot5_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
646 {
647 sp_3dbox_knot_set_uniformly(item, 5, Box3D::Z, new_pos, origin, state);
648 }
650 static void sp_3dbox_knot6_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
651 {
652 sp_3dbox_knot_set_uniformly(item, 6, Box3D::Z, new_pos, origin, state);
653 }
655 static void sp_3dbox_knot7_set_uniformly(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
656 {
657 sp_3dbox_knot_set_uniformly(item, 7, Box3D::Z, new_pos, origin, state);
658 }
660 static NR::Point sp_3dbox_knot0_get(SPItem *item)
661 {
662 return sp_3dbox_knot_get(item, 0);
663 }
665 static NR::Point sp_3dbox_knot1_get(SPItem *item)
666 {
667 return sp_3dbox_knot_get(item, 1);
668 }
670 static NR::Point sp_3dbox_knot2_get(SPItem *item)
671 {
672 return sp_3dbox_knot_get(item, 2);
673 }
675 static NR::Point sp_3dbox_knot3_get(SPItem *item)
676 {
677 return sp_3dbox_knot_get(item, 3);
678 }
680 static NR::Point sp_3dbox_knot4_get(SPItem *item)
681 {
682 return sp_3dbox_knot_get(item, 4);
683 }
685 static NR::Point sp_3dbox_knot5_get(SPItem *item)
686 {
687 return sp_3dbox_knot_get(item, 5);
688 }
690 static NR::Point sp_3dbox_knot6_get(SPItem *item)
691 {
692 return sp_3dbox_knot_get(item, 6);
693 }
695 static NR::Point sp_3dbox_knot7_get(SPItem *item)
696 {
697 return sp_3dbox_knot_get(item, 7);
698 }
701 //static
702 SPKnotHolder *
703 sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop, guint number_of_handles)
704 {
705 g_assert(item != NULL);
706 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
708 switch (number_of_handles) {
709 case 3:
710 sp_knot_holder_add(knot_holder, sp_3dbox_knot1_set, sp_3dbox_knot1_get, NULL,_("Resize box in X/Y direction"));
711 sp_knot_holder_add(knot_holder, sp_3dbox_knot2_set, sp_3dbox_knot2_get, NULL,_("Resize box in X/Y direction"));
712 sp_knot_holder_add(knot_holder, sp_3dbox_knot5_set, sp_3dbox_knot5_get, NULL,_("Resize box in Z direction"));
713 sp_pat_knot_holder(item, knot_holder);
714 break;
715 case 4:
716 /***
717 sp_knot_holder_add(knot_holder, sp_3dbox_knot1_set_constrained, sp_3dbox_knot1_get, NULL,_("Resize box in X/Y direction"));
718 sp_knot_holder_add(knot_holder, sp_3dbox_knot2_set_constrained, sp_3dbox_knot2_get, NULL,_("Resize box in X/Y direction"));
719 sp_knot_holder_add_full(knot_holder, sp_3dbox_knot3_set, sp_3dbox_knot3_get, NULL,
720 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR, _("Resize box in Y direction"));
721 sp_knot_holder_add(knot_holder, sp_3dbox_knot7_set, sp_3dbox_knot7_get, NULL,_("Resize box in Z direction"));
722 ***/
723 sp_knot_holder_add(knot_holder, sp_3dbox_knot0_set_uniformly, sp_3dbox_knot0_get, NULL,
724 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis"));
725 sp_knot_holder_add(knot_holder, sp_3dbox_knot1_set_uniformly, sp_3dbox_knot1_get, NULL,
726 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis"));
727 sp_knot_holder_add(knot_holder, sp_3dbox_knot2_set_uniformly, sp_3dbox_knot2_get, NULL,
728 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis"));
729 sp_knot_holder_add(knot_holder, sp_3dbox_knot3_set_uniformly, sp_3dbox_knot3_get, NULL,
730 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis"));
731 sp_knot_holder_add(knot_holder, sp_3dbox_knot4_set_uniformly, sp_3dbox_knot4_get, NULL,
732 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction"));
733 sp_knot_holder_add(knot_holder, sp_3dbox_knot5_set_uniformly, sp_3dbox_knot5_get, NULL,
734 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction"));
735 sp_knot_holder_add(knot_holder, sp_3dbox_knot6_set_uniformly, sp_3dbox_knot6_get, NULL,
736 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction"));
737 sp_knot_holder_add(knot_holder, sp_3dbox_knot7_set_uniformly, sp_3dbox_knot7_get, NULL,
738 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction"));
739 sp_pat_knot_holder(item, knot_holder);
740 break;
741 default:
742 g_print ("Wrong number of handles (%d): Not implemented yet.\n", number_of_handles);
743 break;
744 }
746 return knot_holder;
747 }
749 /* SPArc */
751 /*
752 * return values:
753 * 1 : inside
754 * 0 : on the curves
755 * -1 : outside
756 */
757 static gint
758 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
759 {
760 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
761 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
763 gdouble s = dx * dx + dy * dy;
764 if (s < 1.0) return 1;
765 if (s > 1.0) return -1;
766 return 0;
767 }
769 static void
770 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
771 {
772 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
774 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
775 SPArc *arc = SP_ARC(item);
777 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
779 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
780 NR::scale sc(ge->rx.computed, ge->ry.computed);
781 ge->start = atan2(delta * sc.inverse());
782 if ( ( state & GDK_CONTROL_MASK )
783 && snaps )
784 {
785 ge->start = sp_round(ge->start, M_PI/snaps);
786 }
787 sp_genericellipse_normalize(ge);
788 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
789 }
791 static NR::Point sp_arc_start_get(SPItem *item)
792 {
793 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
794 SPArc *arc = SP_ARC(item);
796 return sp_arc_get_xy(arc, ge->start);
797 }
799 static void
800 sp_arc_end_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
801 {
802 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
804 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
805 SPArc *arc = SP_ARC(item);
807 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
809 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
810 NR::scale sc(ge->rx.computed, ge->ry.computed);
811 ge->end = atan2(delta * sc.inverse());
812 if ( ( state & GDK_CONTROL_MASK )
813 && snaps )
814 {
815 ge->end = sp_round(ge->end, M_PI/snaps);
816 }
817 sp_genericellipse_normalize(ge);
818 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
819 }
821 static NR::Point sp_arc_end_get(SPItem *item)
822 {
823 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
824 SPArc *arc = SP_ARC(item);
826 return sp_arc_get_xy(arc, ge->end);
827 }
829 static void
830 sp_arc_startend_click(SPItem *item, guint state)
831 {
832 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
834 if (state & GDK_SHIFT_MASK) {
835 ge->end = ge->start = 0;
836 ((SPObject *)ge)->updateRepr();
837 }
838 }
841 static void
842 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
843 {
844 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
845 SPArc *arc = SP_ARC(item);
847 NR::Point const s = snap_knot_position(arc, p);
849 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
851 if ( state & GDK_CONTROL_MASK ) {
852 ge->ry.computed = ge->rx.computed;
853 }
855 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
856 }
858 static NR::Point sp_arc_rx_get(SPItem *item)
859 {
860 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
862 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
863 }
865 static void
866 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
867 {
868 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
869 SPArc *arc = SP_ARC(item);
871 NR::Point const s = snap_knot_position(arc, p);
873 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
875 if ( state & GDK_CONTROL_MASK ) {
876 ge->rx.computed = ge->ry.computed;
877 }
879 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
880 }
882 static NR::Point sp_arc_ry_get(SPItem *item)
883 {
884 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
886 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
887 }
889 static void
890 sp_arc_rx_click(SPItem *item, guint state)
891 {
892 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
894 if (state & GDK_CONTROL_MASK) {
895 ge->ry.computed = ge->rx.computed;
896 ((SPObject *)ge)->updateRepr();
897 }
898 }
900 static void
901 sp_arc_ry_click(SPItem *item, guint state)
902 {
903 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
905 if (state & GDK_CONTROL_MASK) {
906 ge->rx.computed = ge->ry.computed;
907 ((SPObject *)ge)->updateRepr();
908 }
909 }
911 static SPKnotHolder *
912 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
913 {
914 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
916 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
917 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
918 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
919 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
920 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
921 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
922 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
923 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
924 _("Position the <b>start point</b> of the arc or segment; with <b>Ctrl</b> to snap angle; drag <b>inside</b> the ellipse for arc, <b>outside</b> for segment"));
925 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
926 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
927 _("Position the <b>end point</b> of the arc or segment; with <b>Ctrl</b> to snap angle; drag <b>inside</b> the ellipse for arc, <b>outside</b> for segment"));
929 sp_pat_knot_holder(item, knot_holder);
931 return knot_holder;
932 }
934 /* SPStar */
936 static void
937 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
938 {
939 SPStar *star = SP_STAR(item);
941 NR::Point const s = snap_knot_position(star, p);
943 NR::Point d = s - star->center;
945 double arg1 = atan2(d);
946 double darg1 = arg1 - star->arg[0];
948 if (state & GDK_MOD1_MASK) {
949 star->randomized = darg1/(star->arg[0] - star->arg[1]);
950 } else if (state & GDK_SHIFT_MASK) {
951 star->rounded = darg1/(star->arg[0] - star->arg[1]);
952 } else if (state & GDK_CONTROL_MASK) {
953 star->r[0] = L2(d);
954 } else {
955 star->r[0] = L2(d);
956 star->arg[0] = arg1;
957 star->arg[1] += darg1;
958 }
959 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
960 }
962 static void
963 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
964 {
965 SPStar *star = SP_STAR(item);
967 NR::Point const s = snap_knot_position(star, p);
969 if (star->flatsided == false) {
970 NR::Point d = s - star->center;
972 double arg1 = atan2(d);
973 double darg1 = arg1 - star->arg[1];
975 if (state & GDK_MOD1_MASK) {
976 star->randomized = darg1/(star->arg[0] - star->arg[1]);
977 } else if (state & GDK_SHIFT_MASK) {
978 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
979 } else if (state & GDK_CONTROL_MASK) {
980 star->r[1] = L2(d);
981 star->arg[1] = star->arg[0] + M_PI / star->sides;
982 }
983 else {
984 star->r[1] = L2(d);
985 star->arg[1] = atan2(d);
986 }
987 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
988 }
989 }
991 static NR::Point sp_star_knot1_get(SPItem *item)
992 {
993 g_assert(item != NULL);
995 SPStar *star = SP_STAR(item);
997 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
999 }
1001 static NR::Point sp_star_knot2_get(SPItem *item)
1002 {
1003 g_assert(item != NULL);
1005 SPStar *star = SP_STAR(item);
1007 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
1008 }
1010 static void
1011 sp_star_knot_click(SPItem *item, guint state)
1012 {
1013 SPStar *star = SP_STAR(item);
1015 if (state & GDK_MOD1_MASK) {
1016 star->randomized = 0;
1017 ((SPObject *)star)->updateRepr();
1018 } else if (state & GDK_SHIFT_MASK) {
1019 star->rounded = 0;
1020 ((SPObject *)star)->updateRepr();
1021 } else if (state & GDK_CONTROL_MASK) {
1022 star->arg[1] = star->arg[0] + M_PI / star->sides;
1023 ((SPObject *)star)->updateRepr();
1024 }
1025 }
1027 static SPKnotHolder *
1028 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
1029 {
1030 /* we don't need to get parent knot_holder */
1031 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1032 g_assert(item != NULL);
1034 SPStar *star = SP_STAR(item);
1036 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
1037 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
1038 if (star->flatsided == false)
1039 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
1040 _("Adjust the <b>base radius</b> of the star; with <b>Ctrl</b> to keep star rays radial (no skew); with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
1042 sp_pat_knot_holder(item, knot_holder);
1044 return knot_holder;
1045 }
1047 /* SPSpiral */
1049 /*
1050 * set attributes via inner (t=t0) knot point:
1051 * [default] increase/decrease inner point
1052 * [shift] increase/decrease inner and outer arg synchronizely
1053 * [control] constrain inner arg to round per PI/4
1054 */
1055 static void
1056 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1057 {
1058 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1060 SPSpiral *spiral = SP_SPIRAL(item);
1062 gdouble dx = p[NR::X] - spiral->cx;
1063 gdouble dy = p[NR::Y] - spiral->cy;
1065 if (state & GDK_MOD1_MASK) {
1066 // adjust divergence by vertical drag, relative to rad
1067 double new_exp = (spiral->rad + dy)/(spiral->rad);
1068 spiral->exp = new_exp > 0? new_exp : 0;
1069 } else {
1070 // roll/unroll from inside
1071 gdouble arg_t0;
1072 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
1074 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
1075 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
1076 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
1078 /* round inner arg per PI/snaps, if CTRL is pressed */
1079 if ( ( state & GDK_CONTROL_MASK )
1080 && ( fabs(spiral->revo) > SP_EPSILON_2 )
1081 && ( snaps != 0 ) ) {
1082 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
1083 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
1084 }
1086 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1087 }
1089 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1090 }
1092 /*
1093 * set attributes via outer (t=1) knot point:
1094 * [default] increase/decrease revolution factor
1095 * [control] constrain inner arg to round per PI/4
1096 */
1097 static void
1098 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1099 {
1100 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1102 SPSpiral *spiral = SP_SPIRAL(item);
1104 gdouble dx = p[NR::X] - spiral->cx;
1105 gdouble dy = p[NR::Y] - spiral->cy;
1107 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
1108 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
1109 if (!(state & GDK_MOD1_MASK)) {
1110 // if alt not pressed, change also rad; otherwise it is locked
1111 spiral->rad = MAX(hypot(dx, dy), 0.001);
1112 }
1113 if ( ( state & GDK_CONTROL_MASK )
1114 && snaps ) {
1115 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
1116 }
1117 } else { // roll/unroll
1118 // arg of the spiral outer end
1119 double arg_1;
1120 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
1122 // its fractional part after the whole turns are subtracted
1123 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
1125 // arg of the mouse point relative to spiral center
1126 double mouse_angle = atan2(dy, dx);
1127 if (mouse_angle < 0)
1128 mouse_angle += 2*M_PI;
1130 // snap if ctrl
1131 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
1132 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
1133 }
1135 // by how much we want to rotate the outer point
1136 double diff = mouse_angle - arg_r;
1137 if (diff > M_PI)
1138 diff -= 2*M_PI;
1139 else if (diff < -M_PI)
1140 diff += 2*M_PI;
1142 // calculate the new rad;
1143 // the value of t corresponding to the angle arg_1 + diff:
1144 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1145 // the rad at that t:
1146 double rad_new = 0;
1147 if (t_temp > spiral->t0)
1148 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1150 // change the revo (converting diff from radians to the number of turns)
1151 spiral->revo += diff/(2*M_PI);
1152 if (spiral->revo < 1e-3)
1153 spiral->revo = 1e-3;
1155 // if alt not pressed and the values are sane, change the rad
1156 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1157 // adjust t0 too so that the inner point stays unmoved
1158 double r0;
1159 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1160 spiral->rad = rad_new;
1161 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1162 }
1163 if (!isFinite(spiral->t0)) spiral->t0 = 0.0;
1164 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1165 }
1167 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1168 }
1170 static NR::Point sp_spiral_inner_get(SPItem *item)
1171 {
1172 SPSpiral *spiral = SP_SPIRAL(item);
1174 return sp_spiral_get_xy(spiral, spiral->t0);
1175 }
1177 static NR::Point sp_spiral_outer_get(SPItem *item)
1178 {
1179 SPSpiral *spiral = SP_SPIRAL(item);
1181 return sp_spiral_get_xy(spiral, 1.0);
1182 }
1184 static void
1185 sp_spiral_inner_click(SPItem *item, guint state)
1186 {
1187 SPSpiral *spiral = SP_SPIRAL(item);
1189 if (state & GDK_MOD1_MASK) {
1190 spiral->exp = 1;
1191 ((SPObject *)spiral)->updateRepr();
1192 } else if (state & GDK_SHIFT_MASK) {
1193 spiral->t0 = 0;
1194 ((SPObject *)spiral)->updateRepr();
1195 }
1196 }
1198 static SPKnotHolder *
1199 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1200 {
1201 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1203 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1204 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1205 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1206 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1208 sp_pat_knot_holder(item, knot_holder);
1210 return knot_holder;
1211 }
1213 /* SPOffset */
1215 static void
1216 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1217 {
1218 SPOffset *offset = SP_OFFSET(item);
1220 offset->rad = sp_offset_distance_to_original(offset, p);
1221 offset->knot = p;
1222 offset->knotSet = true;
1224 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1225 }
1228 static NR::Point sp_offset_offset_get(SPItem *item)
1229 {
1230 SPOffset *offset = SP_OFFSET(item);
1232 NR::Point np;
1233 sp_offset_top_point(offset,&np);
1234 return np;
1235 }
1237 static SPKnotHolder *
1238 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1239 {
1240 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1242 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1243 _("Adjust the <b>offset distance</b>"));
1245 sp_pat_knot_holder(item, knot_holder);
1247 return knot_holder;
1248 }
1250 static SPKnotHolder *
1251 sp_misc_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1252 {
1253 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1254 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1255 {
1256 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1258 sp_pat_knot_holder(item, knot_holder);
1260 return knot_holder;
1261 }
1262 return NULL;
1263 }
1265 static void
1266 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1267 {
1268 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1269 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1270 {
1271 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1272 // TRANSLATORS: This refers to the pattern that's inside the object
1273 _("<b>Move</b> the pattern fill inside the object"));
1274 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1275 _("<b>Scale</b> the pattern fill uniformly"));
1276 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1277 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1278 }
1279 }
1281 static NR::Point sp_flowtext_corner_get(SPItem *item)
1282 {
1283 SPRect *rect = SP_RECT(item);
1285 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1286 }
1288 static void
1289 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1290 {
1291 SPRect *rect = SP_RECT(item);
1293 sp_rect_wh_set_internal(rect, p, origin, state);
1294 }
1296 static SPKnotHolder *
1297 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1298 {
1299 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1301 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1302 _("Drag to resize the <b>flowed text frame</b>"));
1304 return knot_holder;
1305 }
1308 /*
1309 Local Variables:
1310 mode:c++
1311 c-file-style:"stroustrup"
1312 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1313 indent-tabs-mode:nil
1314 fill-column:99
1315 End:
1316 */
1317 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :