c597f3a265f7b748912b3e55a938386af825f698
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 SPKnotHolder *sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop);
53 static SPKnotHolder *sp_arc_knot_holder(SPItem *item, SPDesktop *desktop);
54 static SPKnotHolder *sp_star_knot_holder(SPItem *item, SPDesktop *desktop);
55 static SPKnotHolder *sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop);
56 static SPKnotHolder *sp_offset_knot_holder(SPItem *item, SPDesktop *desktop);
57 static SPKnotHolder *sp_path_knot_holder(SPItem *item, SPDesktop *desktop);
58 static SPKnotHolder *sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop);
59 static void sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder);
61 SPKnotHolder *
62 sp_item_knot_holder(SPItem *item, SPDesktop *desktop)
63 {
64 if (SP_IS_RECT(item)) {
65 return sp_rect_knot_holder(item, desktop);
66 } else if (SP_IS_3DBOX(item)) {
67 return sp_3dbox_knot_holder(item, desktop);
68 } else if (SP_IS_ARC(item)) {
69 return sp_arc_knot_holder(item, desktop);
70 } else if (SP_IS_STAR(item)) {
71 return sp_star_knot_holder(item, desktop);
72 } else if (SP_IS_SPIRAL(item)) {
73 return sp_spiral_knot_holder(item, desktop);
74 } else if (SP_IS_OFFSET(item)) {
75 return sp_offset_knot_holder(item, desktop);
76 } else if (SP_IS_PATH(item)) {
77 return sp_path_knot_holder(item, desktop);
78 } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
79 return sp_flowtext_knot_holder(item, desktop);
80 }
82 return NULL;
83 }
86 /* Pattern manipulation */
88 static gdouble sp_pattern_extract_theta(SPPattern *pat, gdouble scale)
89 {
90 gdouble theta = asin(pat->patternTransform[1] / scale);
91 if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
92 return theta;
93 }
95 static gdouble sp_pattern_extract_scale(SPPattern *pat)
96 {
97 gdouble s = pat->patternTransform[1];
98 gdouble c = pat->patternTransform[0];
99 gdouble xscale = sqrt(c * c + s * s);
100 return xscale;
101 }
103 static NR::Point sp_pattern_extract_trans(SPPattern const *pat)
104 {
105 return NR::Point(pat->patternTransform[4], pat->patternTransform[5]);
106 }
108 static void
109 sp_pattern_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
110 {
111 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
113 NR::Point p_snapped = p;
115 if ( state & GDK_CONTROL_MASK ) {
116 if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
117 p_snapped[NR::Y] = origin[NR::Y];
118 } else {
119 p_snapped[NR::X] = origin[NR::X];
120 }
121 }
123 if (state) {
124 NR::Point const q = p_snapped - sp_pattern_extract_trans(pat);
125 sp_item_adjust_pattern(item, NR::Matrix(NR::translate(q)));
126 }
128 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
129 }
132 static NR::Point sp_pattern_xy_get(SPItem *item)
133 {
134 SPPattern const *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
135 return sp_pattern_extract_trans(pat);
136 }
138 static NR::Point sp_pattern_angle_get(SPItem *item)
139 {
140 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
142 gdouble x = (pattern_width(pat)*0.5);
143 gdouble y = 0;
144 NR::Point delta = NR::Point(x,y);
145 gdouble scale = sp_pattern_extract_scale(pat);
146 gdouble theta = sp_pattern_extract_theta(pat, scale);
147 delta = delta * NR::Matrix(NR::rotate(theta))*NR::Matrix(NR::scale(scale,scale));
148 delta = delta + sp_pattern_extract_trans(pat);
149 return delta;
150 }
152 static void
153 sp_pattern_angle_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
154 {
155 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
157 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
159 // get the angle from pattern 0,0 to the cursor pos
160 NR::Point delta = p - sp_pattern_extract_trans(pat);
161 gdouble theta = atan2(delta);
163 if ( state & GDK_CONTROL_MASK ) {
164 theta = sp_round(theta, M_PI/snaps);
165 }
167 // get the scale from the current transform so we can keep it.
168 gdouble scl = sp_pattern_extract_scale(pat);
169 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
170 NR::Point const t = sp_pattern_extract_trans(pat);
171 rot[4] = t[NR::X];
172 rot[5] = t[NR::Y];
173 sp_item_adjust_pattern(item, rot, true);
174 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
175 }
177 static void
178 sp_pattern_scale_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
179 {
180 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
182 // Get the scale from the position of the knotholder,
183 NR::Point d = p - sp_pattern_extract_trans(pat);
184 gdouble s = NR::L2(d);
185 gdouble pat_x = pattern_width(pat) * 0.5;
186 gdouble pat_y = pattern_height(pat) * 0.5;
187 gdouble pat_h = hypot(pat_x, pat_y);
188 gdouble scl = s / pat_h;
190 // get angle from current transform, (need get current scale first to calculate angle)
191 gdouble oldscale = sp_pattern_extract_scale(pat);
192 gdouble theta = sp_pattern_extract_theta(pat,oldscale);
194 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
195 NR::Point const t = sp_pattern_extract_trans(pat);
196 rot[4] = t[NR::X];
197 rot[5] = t[NR::Y];
198 sp_item_adjust_pattern(item, rot, true);
199 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
200 }
203 static NR::Point sp_pattern_scale_get(SPItem *item)
204 {
205 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
207 gdouble x = pattern_width(pat)*0.5;
208 gdouble y = pattern_height(pat)*0.5;
209 NR::Point delta = NR::Point(x,y);
210 NR::Matrix a = pat->patternTransform;
211 a[4] = 0;
212 a[5] = 0;
213 delta = delta * a;
214 delta = delta + sp_pattern_extract_trans(pat);
215 return delta;
216 }
218 /* SPRect */
220 static NR::Point snap_knot_position(SPItem *item, NR::Point const &p)
221 {
222 SPDesktop const *desktop = inkscape_active_desktop();
223 NR::Matrix const i2d (sp_item_i2d_affine (item));
224 NR::Point s = p * i2d;
225 SnapManager const &m = desktop->namedview->snap_manager;
226 s = m.freeSnap(Inkscape::Snapper::BBOX_POINT | Inkscape::Snapper::SNAP_POINT, s, item).getPoint();
227 return s * i2d.inverse();
228 }
230 static NR::Point sp_rect_rx_get(SPItem *item)
231 {
232 SPRect *rect = SP_RECT(item);
234 return NR::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed);
235 }
237 static void sp_rect_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
238 {
239 SPRect *rect = SP_RECT(item);
241 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
242 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
243 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
245 if (state & GDK_CONTROL_MASK) {
246 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
247 rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, temp);
248 rect->rx._set = rect->ry._set = true;
250 } else {
251 rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, rect->width.computed / 2.0);
252 rect->rx._set = true;
253 }
255 ((SPObject*)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
256 }
259 static NR::Point sp_rect_ry_get(SPItem *item)
260 {
261 SPRect *rect = SP_RECT(item);
263 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed);
264 }
266 static void sp_rect_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
267 {
268 SPRect *rect = SP_RECT(item);
270 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
271 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
272 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
274 if (state & GDK_CONTROL_MASK) {
275 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
276 rect->rx.computed = rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed, 0.0, temp);
277 rect->ry._set = rect->rx._set = true;
278 } else {
279 if (!rect->rx._set || rect->rx.computed == 0) {
280 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
281 0.0,
282 MIN(rect->height.computed / 2.0, rect->width.computed / 2.0));
283 } else {
284 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
285 0.0,
286 rect->height.computed / 2.0);
287 }
289 rect->ry._set = true;
290 }
292 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
293 }
295 /**
296 * Remove rounding from a rectangle.
297 */
298 static void rect_remove_rounding(SPRect *rect)
299 {
300 SP_OBJECT_REPR(rect)->setAttribute("rx", NULL);
301 SP_OBJECT_REPR(rect)->setAttribute("ry", NULL);
302 }
304 /**
305 * Called when the horizontal rounding radius knot is clicked.
306 */
307 static void sp_rect_rx_knot_click(SPItem *item, guint state)
308 {
309 SPRect *rect = SP_RECT(item);
311 if (state & GDK_SHIFT_MASK) {
312 rect_remove_rounding(rect);
313 } else if (state & GDK_CONTROL_MASK) {
314 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
315 SP_OBJECT_REPR(rect)->setAttribute("ry", SP_OBJECT_REPR(rect)->attribute("rx"));
316 }
317 }
319 /**
320 * Called when the vertical rounding radius knot is clicked.
321 */
322 static void sp_rect_ry_knot_click(SPItem *item, guint state)
323 {
324 SPRect *rect = SP_RECT(item);
326 if (state & GDK_SHIFT_MASK) {
327 rect_remove_rounding(rect);
328 } else if (state & GDK_CONTROL_MASK) {
329 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
330 SP_OBJECT_REPR(rect)->setAttribute("rx", SP_OBJECT_REPR(rect)->attribute("ry"));
331 }
332 }
334 #define SGN(x) ((x)>0?1:((x)<0?-1:0))
336 static void sp_rect_clamp_radii(SPRect *rect)
337 {
338 // clamp rounding radii so that they do not exceed width/height
339 if (2 * rect->rx.computed > rect->width.computed) {
340 rect->rx.computed = 0.5 * rect->width.computed;
341 rect->rx._set = true;
342 }
343 if (2 * rect->ry.computed > rect->height.computed) {
344 rect->ry.computed = 0.5 * rect->height.computed;
345 rect->ry._set = true;
346 }
347 }
349 static NR::Point sp_rect_wh_get(SPItem *item)
350 {
351 SPRect *rect = SP_RECT(item);
353 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
354 }
356 static void sp_rect_wh_set_internal(SPRect *rect, NR::Point const &p, NR::Point const &origin, guint state)
357 {
358 NR::Point const s = snap_knot_position(rect, p);
360 if (state & GDK_CONTROL_MASK) {
361 // original width/height when drag started
362 gdouble const w_orig = (origin[NR::X] - rect->x.computed);
363 gdouble const h_orig = (origin[NR::Y] - rect->y.computed);
365 //original ratio
366 gdouble const ratio = (w_orig / h_orig);
368 // mouse displacement since drag started
369 gdouble const minx = s[NR::X] - origin[NR::X];
370 gdouble const miny = s[NR::Y] - origin[NR::Y];
372 if (fabs(minx) > fabs(miny)) {
374 // snap to horizontal or diagonal
375 rect->width.computed = MAX(w_orig + minx, 0);
376 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
377 // closer to the diagonal and in same-sign quarters, change both using ratio
378 rect->height.computed = MAX(h_orig + minx / ratio, 0);
379 } else {
380 // closer to the horizontal, change only width, height is h_orig
381 rect->height.computed = MAX(h_orig, 0);
382 }
384 } else {
385 // snap to vertical or diagonal
386 rect->height.computed = MAX(h_orig + miny, 0);
387 if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) {
388 // closer to the diagonal and in same-sign quarters, change both using ratio
389 rect->width.computed = MAX(w_orig + miny * ratio, 0);
390 } else {
391 // closer to the vertical, change only height, width is w_orig
392 rect->width.computed = MAX(w_orig, 0);
393 }
394 }
396 rect->width._set = rect->height._set = true;
398 } else {
399 // move freely
400 rect->width.computed = MAX(s[NR::X] - rect->x.computed, 0);
401 rect->height.computed = MAX(s[NR::Y] - rect->y.computed, 0);
402 rect->width._set = rect->height._set = true;
403 }
405 sp_rect_clamp_radii(rect);
407 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
408 }
410 static void sp_rect_wh_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
411 {
412 SPRect *rect = SP_RECT(item);
414 sp_rect_wh_set_internal(rect, p, origin, state);
415 }
417 static NR::Point sp_rect_xy_get(SPItem *item)
418 {
419 SPRect *rect = SP_RECT(item);
421 return NR::Point(rect->x.computed, rect->y.computed);
422 }
424 static void sp_rect_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
425 {
426 SPRect *rect = SP_RECT(item);
428 // opposite corner (unmoved)
429 gdouble opposite_x = (rect->x.computed + rect->width.computed);
430 gdouble opposite_y = (rect->y.computed + rect->height.computed);
432 // original width/height when drag started
433 gdouble w_orig = opposite_x - origin[NR::X];
434 gdouble h_orig = opposite_y - origin[NR::Y];
436 NR::Point const s = snap_knot_position(rect, p);
438 // mouse displacement since drag started
439 gdouble minx = s[NR::X] - origin[NR::X];
440 gdouble miny = s[NR::Y] - origin[NR::Y];
442 if (state & GDK_CONTROL_MASK) {
443 //original ratio
444 gdouble ratio = (w_orig / h_orig);
446 if (fabs(minx) > fabs(miny)) {
448 // snap to horizontal or diagonal
449 rect->x.computed = MIN(s[NR::X], opposite_x);
450 rect->width.computed = MAX(w_orig - minx, 0);
451 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
452 // closer to the diagonal and in same-sign quarters, change both using ratio
453 rect->y.computed = MIN(origin[NR::Y] + minx / ratio, opposite_y);
454 rect->height.computed = MAX(h_orig - minx / ratio, 0);
455 } else {
456 // closer to the horizontal, change only width, height is h_orig
457 rect->y.computed = MIN(origin[NR::Y], opposite_y);
458 rect->height.computed = MAX(h_orig, 0);
459 }
461 } else {
463 // snap to vertical or diagonal
464 rect->y.computed = MIN(s[NR::Y], opposite_y);
465 rect->height.computed = MAX(h_orig - miny, 0);
466 if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
467 // closer to the diagonal and in same-sign quarters, change both using ratio
468 rect->x.computed = MIN(origin[NR::X] + miny * ratio, opposite_x);
469 rect->width.computed = MAX(w_orig - miny * ratio, 0);
470 } else {
471 // closer to the vertical, change only height, width is w_orig
472 rect->x.computed = MIN(origin[NR::X], opposite_x);
473 rect->width.computed = MAX(w_orig, 0);
474 }
476 }
478 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
480 } else {
481 // move freely
482 rect->x.computed = MIN(s[NR::X], opposite_x);
483 rect->width.computed = MAX(w_orig - minx, 0);
484 rect->y.computed = MIN(s[NR::Y], opposite_y);
485 rect->height.computed = MAX(h_orig - miny, 0);
486 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
487 }
489 sp_rect_clamp_radii(rect);
491 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
492 }
494 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop)
495 {
496 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
498 sp_knot_holder_add_full(
499 knot_holder, sp_rect_rx_set, sp_rect_rx_get, sp_rect_rx_knot_click,
500 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
501 _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> to make the vertical "
502 "radius the same"));
504 sp_knot_holder_add_full(
505 knot_holder, sp_rect_ry_set, sp_rect_ry_get, sp_rect_ry_knot_click,
506 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
507 _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> to make the horizontal "
508 "radius the same")
509 );
511 sp_knot_holder_add_full(
512 knot_holder, sp_rect_wh_set, sp_rect_wh_get, NULL,
513 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
514 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
515 "or stretch in one dimension only")
516 );
518 sp_knot_holder_add_full(
519 knot_holder, sp_rect_xy_set, sp_rect_xy_get, NULL,
520 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
521 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
522 "or stretch in one dimension only")
523 );
525 sp_pat_knot_holder(item, knot_holder);
526 return knot_holder;
527 }
529 /* 3D Box */
531 static void sp_3dbox_knot_set(SPItem *item, guint knot_id, Box3D::Axis direction,
532 NR::Point const &new_pos, NR::Point const &origin, guint state)
533 {
534 g_assert(item != NULL);
535 SP3DBox *box = SP_3DBOX(item);
537 // FIXME: Why must the coordinates be flipped vertically???
538 SPDocument *doc = SP_OBJECT_DOCUMENT(box);
539 gdouble height = sp_document_height(doc);
541 if (direction == Box3D::Z) {
542 sp_3dbox_move_corner_in_constrained_Z_direction (box, knot_id,
543 NR::Point (new_pos[NR::X], height - new_pos[NR::Y]));
544 } else {
545 sp_3dbox_move_corner_in_XY_plane (box, knot_id, NR::Point (new_pos[NR::X], height - new_pos[NR::Y]));
546 }
547 sp_3dbox_update_curves (box);
548 }
550 static NR::Point sp_3dbox_knot_get(SPItem *item, guint knot_id)
551 {
552 g_assert(item != NULL);
553 SP3DBox *box = SP_3DBOX(item);
555 // FIXME: Why must the coordinates be flipped vertically???
556 SPDocument *doc = SP_OBJECT_DOCUMENT(box);
557 gdouble height = sp_document_height(doc);
559 return NR::Point(sp_3dbox_get_corner(box, knot_id)[NR::X], height - sp_3dbox_get_corner(box, knot_id)[NR::Y]);
560 }
562 static void sp_3dbox_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
563 {
564 sp_3dbox_knot_set (item, 1, Box3D::XY, new_pos, origin, state);
565 }
567 static NR::Point sp_3dbox_knot1_get(SPItem *item)
568 {
569 return sp_3dbox_knot_get(item, 1);
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::XY, new_pos, origin, state);
575 }
577 static NR::Point sp_3dbox_knot2_get(SPItem *item)
578 {
579 return sp_3dbox_knot_get(item, 2);
580 }
582 static void sp_3dbox_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
583 {
584 sp_3dbox_knot_set (item, 5, Box3D::Z, new_pos, origin, state);
585 }
587 static NR::Point sp_3dbox_knot5_get(SPItem *item)
588 {
589 return sp_3dbox_knot_get(item, 5);
590 }
592 static SPKnotHolder *
593 sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop)
594 {
595 g_assert(item != NULL);
596 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
598 sp_knot_holder_add(knot_holder, sp_3dbox_knot1_set, sp_3dbox_knot1_get, NULL,_("Resize box in X/Y direction"));
599 sp_knot_holder_add(knot_holder, sp_3dbox_knot2_set, sp_3dbox_knot2_get, NULL,_("Resize box in X/Y direction"));
600 sp_knot_holder_add(knot_holder, sp_3dbox_knot5_set, sp_3dbox_knot5_get, NULL,_("Resize box in Z direction"));
601 sp_pat_knot_holder(item, knot_holder);
603 return knot_holder;
604 }
606 /* SPArc */
608 /*
609 * return values:
610 * 1 : inside
611 * 0 : on the curves
612 * -1 : outside
613 */
614 static gint
615 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
616 {
617 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
618 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
620 gdouble s = dx * dx + dy * dy;
621 if (s < 1.0) return 1;
622 if (s > 1.0) return -1;
623 return 0;
624 }
626 static void
627 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
628 {
629 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
631 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
632 SPArc *arc = SP_ARC(item);
634 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
636 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
637 NR::scale sc(ge->rx.computed, ge->ry.computed);
638 ge->start = atan2(delta * sc.inverse());
639 if ( ( state & GDK_CONTROL_MASK )
640 && snaps )
641 {
642 ge->start = sp_round(ge->start, M_PI/snaps);
643 }
644 sp_genericellipse_normalize(ge);
645 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
646 }
648 static NR::Point sp_arc_start_get(SPItem *item)
649 {
650 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
651 SPArc *arc = SP_ARC(item);
653 return sp_arc_get_xy(arc, ge->start);
654 }
656 static void
657 sp_arc_end_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
658 {
659 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
661 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
662 SPArc *arc = SP_ARC(item);
664 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
666 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
667 NR::scale sc(ge->rx.computed, ge->ry.computed);
668 ge->end = atan2(delta * sc.inverse());
669 if ( ( state & GDK_CONTROL_MASK )
670 && snaps )
671 {
672 ge->end = sp_round(ge->end, M_PI/snaps);
673 }
674 sp_genericellipse_normalize(ge);
675 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
676 }
678 static NR::Point sp_arc_end_get(SPItem *item)
679 {
680 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
681 SPArc *arc = SP_ARC(item);
683 return sp_arc_get_xy(arc, ge->end);
684 }
686 static void
687 sp_arc_startend_click(SPItem *item, guint state)
688 {
689 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
691 if (state & GDK_SHIFT_MASK) {
692 ge->end = ge->start = 0;
693 ((SPObject *)ge)->updateRepr();
694 }
695 }
698 static void
699 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
700 {
701 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
702 SPArc *arc = SP_ARC(item);
704 NR::Point const s = snap_knot_position(arc, p);
706 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
708 if ( state & GDK_CONTROL_MASK ) {
709 ge->ry.computed = ge->rx.computed;
710 }
712 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
713 }
715 static NR::Point sp_arc_rx_get(SPItem *item)
716 {
717 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
719 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
720 }
722 static void
723 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
724 {
725 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
726 SPArc *arc = SP_ARC(item);
728 NR::Point const s = snap_knot_position(arc, p);
730 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
732 if ( state & GDK_CONTROL_MASK ) {
733 ge->rx.computed = ge->ry.computed;
734 }
736 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
737 }
739 static NR::Point sp_arc_ry_get(SPItem *item)
740 {
741 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
743 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
744 }
746 static void
747 sp_arc_rx_click(SPItem *item, guint state)
748 {
749 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
751 if (state & GDK_CONTROL_MASK) {
752 ge->ry.computed = ge->rx.computed;
753 ((SPObject *)ge)->updateRepr();
754 }
755 }
757 static void
758 sp_arc_ry_click(SPItem *item, guint state)
759 {
760 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
762 if (state & GDK_CONTROL_MASK) {
763 ge->rx.computed = ge->ry.computed;
764 ((SPObject *)ge)->updateRepr();
765 }
766 }
768 static SPKnotHolder *
769 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
770 {
771 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
773 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
774 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
775 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
776 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
777 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
778 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
779 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
780 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
781 _("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"));
782 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
783 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
784 _("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"));
786 sp_pat_knot_holder(item, knot_holder);
788 return knot_holder;
789 }
791 /* SPStar */
793 static void
794 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
795 {
796 SPStar *star = SP_STAR(item);
798 NR::Point const s = snap_knot_position(star, p);
800 NR::Point d = s - star->center;
802 double arg1 = atan2(d);
803 double darg1 = arg1 - star->arg[0];
805 if (state & GDK_MOD1_MASK) {
806 star->randomized = darg1/(star->arg[0] - star->arg[1]);
807 } else if (state & GDK_SHIFT_MASK) {
808 star->rounded = darg1/(star->arg[0] - star->arg[1]);
809 } else if (state & GDK_CONTROL_MASK) {
810 star->r[0] = L2(d);
811 } else {
812 star->r[0] = L2(d);
813 star->arg[0] = arg1;
814 star->arg[1] += darg1;
815 }
816 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
817 }
819 static void
820 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
821 {
822 SPStar *star = SP_STAR(item);
824 NR::Point const s = snap_knot_position(star, p);
826 if (star->flatsided == false) {
827 NR::Point d = s - star->center;
829 double arg1 = atan2(d);
830 double darg1 = arg1 - star->arg[1];
832 if (state & GDK_MOD1_MASK) {
833 star->randomized = darg1/(star->arg[0] - star->arg[1]);
834 } else if (state & GDK_SHIFT_MASK) {
835 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
836 } else if (state & GDK_CONTROL_MASK) {
837 star->r[1] = L2(d);
838 star->arg[1] = star->arg[0] + M_PI / star->sides;
839 }
840 else {
841 star->r[1] = L2(d);
842 star->arg[1] = atan2(d);
843 }
844 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
845 }
846 }
848 static NR::Point sp_star_knot1_get(SPItem *item)
849 {
850 g_assert(item != NULL);
852 SPStar *star = SP_STAR(item);
854 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
856 }
858 static NR::Point sp_star_knot2_get(SPItem *item)
859 {
860 g_assert(item != NULL);
862 SPStar *star = SP_STAR(item);
864 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
865 }
867 static void
868 sp_star_knot_click(SPItem *item, guint state)
869 {
870 SPStar *star = SP_STAR(item);
872 if (state & GDK_MOD1_MASK) {
873 star->randomized = 0;
874 ((SPObject *)star)->updateRepr();
875 } else if (state & GDK_SHIFT_MASK) {
876 star->rounded = 0;
877 ((SPObject *)star)->updateRepr();
878 } else if (state & GDK_CONTROL_MASK) {
879 star->arg[1] = star->arg[0] + M_PI / star->sides;
880 ((SPObject *)star)->updateRepr();
881 }
882 }
884 static SPKnotHolder *
885 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
886 {
887 /* we don't need to get parent knot_holder */
888 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
889 g_assert(item != NULL);
891 SPStar *star = SP_STAR(item);
893 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
894 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
895 if (star->flatsided == false)
896 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
897 _("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"));
899 sp_pat_knot_holder(item, knot_holder);
901 return knot_holder;
902 }
904 /* SPSpiral */
906 /*
907 * set attributes via inner (t=t0) knot point:
908 * [default] increase/decrease inner point
909 * [shift] increase/decrease inner and outer arg synchronizely
910 * [control] constrain inner arg to round per PI/4
911 */
912 static void
913 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
914 {
915 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
917 SPSpiral *spiral = SP_SPIRAL(item);
919 gdouble dx = p[NR::X] - spiral->cx;
920 gdouble dy = p[NR::Y] - spiral->cy;
922 if (state & GDK_MOD1_MASK) {
923 // adjust divergence by vertical drag, relative to rad
924 double new_exp = (spiral->rad + dy)/(spiral->rad);
925 spiral->exp = new_exp > 0? new_exp : 0;
926 } else {
927 // roll/unroll from inside
928 gdouble arg_t0;
929 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
931 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
932 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
933 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
935 /* round inner arg per PI/snaps, if CTRL is pressed */
936 if ( ( state & GDK_CONTROL_MASK )
937 && ( fabs(spiral->revo) > SP_EPSILON_2 )
938 && ( snaps != 0 ) ) {
939 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
940 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
941 }
943 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
944 }
946 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
947 }
949 /*
950 * set attributes via outer (t=1) knot point:
951 * [default] increase/decrease revolution factor
952 * [control] constrain inner arg to round per PI/4
953 */
954 static void
955 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
956 {
957 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
959 SPSpiral *spiral = SP_SPIRAL(item);
961 gdouble dx = p[NR::X] - spiral->cx;
962 gdouble dy = p[NR::Y] - spiral->cy;
964 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
965 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
966 if (!(state & GDK_MOD1_MASK)) {
967 // if alt not pressed, change also rad; otherwise it is locked
968 spiral->rad = MAX(hypot(dx, dy), 0.001);
969 }
970 if ( ( state & GDK_CONTROL_MASK )
971 && snaps ) {
972 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
973 }
974 } else { // roll/unroll
975 // arg of the spiral outer end
976 double arg_1;
977 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
979 // its fractional part after the whole turns are subtracted
980 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
982 // arg of the mouse point relative to spiral center
983 double mouse_angle = atan2(dy, dx);
984 if (mouse_angle < 0)
985 mouse_angle += 2*M_PI;
987 // snap if ctrl
988 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
989 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
990 }
992 // by how much we want to rotate the outer point
993 double diff = mouse_angle - arg_r;
994 if (diff > M_PI)
995 diff -= 2*M_PI;
996 else if (diff < -M_PI)
997 diff += 2*M_PI;
999 // calculate the new rad;
1000 // the value of t corresponding to the angle arg_1 + diff:
1001 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1002 // the rad at that t:
1003 double rad_new = 0;
1004 if (t_temp > spiral->t0)
1005 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1007 // change the revo (converting diff from radians to the number of turns)
1008 spiral->revo += diff/(2*M_PI);
1009 if (spiral->revo < 1e-3)
1010 spiral->revo = 1e-3;
1012 // if alt not pressed and the values are sane, change the rad
1013 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1014 // adjust t0 too so that the inner point stays unmoved
1015 double r0;
1016 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1017 spiral->rad = rad_new;
1018 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1019 }
1020 if (!isFinite(spiral->t0)) spiral->t0 = 0.0;
1021 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1022 }
1024 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1025 }
1027 static NR::Point sp_spiral_inner_get(SPItem *item)
1028 {
1029 SPSpiral *spiral = SP_SPIRAL(item);
1031 return sp_spiral_get_xy(spiral, spiral->t0);
1032 }
1034 static NR::Point sp_spiral_outer_get(SPItem *item)
1035 {
1036 SPSpiral *spiral = SP_SPIRAL(item);
1038 return sp_spiral_get_xy(spiral, 1.0);
1039 }
1041 static void
1042 sp_spiral_inner_click(SPItem *item, guint state)
1043 {
1044 SPSpiral *spiral = SP_SPIRAL(item);
1046 if (state & GDK_MOD1_MASK) {
1047 spiral->exp = 1;
1048 ((SPObject *)spiral)->updateRepr();
1049 } else if (state & GDK_SHIFT_MASK) {
1050 spiral->t0 = 0;
1051 ((SPObject *)spiral)->updateRepr();
1052 }
1053 }
1055 static SPKnotHolder *
1056 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1057 {
1058 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1060 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1061 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1062 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1063 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1065 sp_pat_knot_holder(item, knot_holder);
1067 return knot_holder;
1068 }
1070 /* SPOffset */
1072 static void
1073 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1074 {
1075 SPOffset *offset = SP_OFFSET(item);
1077 offset->rad = sp_offset_distance_to_original(offset, p);
1078 offset->knot = p;
1079 offset->knotSet = true;
1081 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1082 }
1085 static NR::Point sp_offset_offset_get(SPItem *item)
1086 {
1087 SPOffset *offset = SP_OFFSET(item);
1089 NR::Point np;
1090 sp_offset_top_point(offset,&np);
1091 return np;
1092 }
1094 static SPKnotHolder *
1095 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1096 {
1097 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1099 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1100 _("Adjust the <b>offset distance</b>"));
1102 sp_pat_knot_holder(item, knot_holder);
1104 return knot_holder;
1105 }
1107 static SPKnotHolder *
1108 sp_path_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1109 {
1110 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1111 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1112 {
1113 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1115 sp_pat_knot_holder(item, knot_holder);
1117 return knot_holder;
1118 }
1119 return NULL;
1120 }
1122 static void
1123 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1124 {
1125 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1126 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1127 {
1128 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1129 // TRANSLATORS: This refers to the pattern that's inside the object
1130 _("<b>Move</b> the pattern fill inside the object"));
1131 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1132 _("<b>Scale</b> the pattern fill uniformly"));
1133 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1134 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1135 }
1136 }
1138 static NR::Point sp_flowtext_corner_get(SPItem *item)
1139 {
1140 SPRect *rect = SP_RECT(item);
1142 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1143 }
1145 static void
1146 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1147 {
1148 SPRect *rect = SP_RECT(item);
1150 sp_rect_wh_set_internal(rect, p, origin, state);
1151 }
1153 static SPKnotHolder *
1154 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1155 {
1156 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1158 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1159 _("Drag to resize the <b>flowed text frame</b>"));
1161 return knot_holder;
1162 }
1165 /*
1166 Local Variables:
1167 mode:c++
1168 c-file-style:"stroustrup"
1169 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1170 indent-tabs-mode:nil
1171 fill-column:99
1172 End:
1173 */
1174 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :