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 "desktop-handles.h"
34 #include "sp-namedview.h"
36 #include "sp-pattern.h"
37 #include "sp-path.h"
39 #include <glibmm/i18n.h>
41 #include "object-edit.h"
43 #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 *box3d_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_misc_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_BOX3D(item)) {
67 return box3d_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_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
77 return sp_flowtext_knot_holder(item, desktop);
78 } else {
79 return sp_misc_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::SNAPPOINT_NODE, 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 /* Box3D (= the new 3D box structure) */
531 static NR::Point box3d_knot_get(SPItem *item, guint knot_id)
532 {
533 g_assert(item != NULL);
534 SPBox3D *box = SP_BOX3D(item);
536 NR::Matrix const i2d (sp_item_i2d_affine (item));
537 return box3d_get_corner_screen(box, knot_id) * i2d;
538 }
540 static void box3d_knot_set(SPItem *item, guint knot_id, NR::Point const &new_pos, NR::Point const &/*origin*/, guint state)
541 {
542 g_assert(item != NULL);
543 SPBox3D *box = SP_BOX3D(item);
544 NR::Matrix const i2d (sp_item_i2d_affine (item));
546 Box3D::Axis movement;
547 if ((knot_id < 4) != (state & GDK_SHIFT_MASK)) {
548 movement = Box3D::XY;
549 } else {
550 movement = Box3D::Z;
551 }
553 box3d_set_corner (box, knot_id, new_pos * i2d, movement, (state & GDK_CONTROL_MASK));
554 box3d_set_z_orders(box);
555 box3d_position_set(box);
556 }
558 static NR::Point box3d_knot_center_get (SPItem *item)
559 {
560 NR::Matrix const i2d (sp_item_i2d_affine (item));
561 return box3d_get_center_screen (SP_BOX3D(item)) * i2d;
562 }
564 static void box3d_knot_center_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
565 {
566 SPBox3D *box = SP_BOX3D(item);
567 NR::Matrix const i2d (sp_item_i2d_affine (item));
569 box3d_set_center (SP_BOX3D(item), new_pos * i2d, origin * i2d, !(state & GDK_SHIFT_MASK) ? Box3D::XY : Box3D::Z,
570 state & GDK_CONTROL_MASK);
572 box3d_set_z_orders(box);
573 box3d_position_set(box);
574 }
576 static void box3d_knot0_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
577 {
578 box3d_knot_set(item, 0, new_pos, origin, state);
579 }
581 static void box3d_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
582 {
583 box3d_knot_set(item, 1, new_pos, origin, state);
584 }
586 static void box3d_knot2_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
587 {
588 box3d_knot_set(item, 2, new_pos, origin, state);
589 }
591 static void box3d_knot3_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
592 {
593 box3d_knot_set(item, 3, new_pos, origin, state);
594 }
596 static void box3d_knot4_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
597 {
598 box3d_knot_set(item, 4, new_pos, origin, state);
599 }
601 static void box3d_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
602 {
603 box3d_knot_set(item, 5, new_pos, origin, state);
604 }
606 static void box3d_knot6_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
607 {
608 box3d_knot_set(item, 6, new_pos, origin, state);
609 }
611 static void box3d_knot7_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
612 {
613 box3d_knot_set(item, 7, new_pos, origin, state);
614 }
616 static NR::Point box3d_knot0_get(SPItem *item)
617 {
618 return box3d_knot_get(item, 0);
619 }
621 static NR::Point box3d_knot1_get(SPItem *item)
622 {
623 return box3d_knot_get(item, 1);
624 }
626 static NR::Point box3d_knot2_get(SPItem *item)
627 {
628 return box3d_knot_get(item, 2);
629 }
631 static NR::Point box3d_knot3_get(SPItem *item)
632 {
633 return box3d_knot_get(item, 3);
634 }
636 static NR::Point box3d_knot4_get(SPItem *item)
637 {
638 return box3d_knot_get(item, 4);
639 }
641 static NR::Point box3d_knot5_get(SPItem *item)
642 {
643 return box3d_knot_get(item, 5);
644 }
646 static NR::Point box3d_knot6_get(SPItem *item)
647 {
648 return box3d_knot_get(item, 6);
649 }
651 static NR::Point box3d_knot7_get(SPItem *item)
652 {
653 return box3d_knot_get(item, 7);
654 }
656 static void box3d_knot_click(SPItem */*item*/, guint /*state*/, guint id)
657 {
658 g_print ("Corner %d was clicked\n", id);
659 }
661 static void box3d_knot0_click(SPItem *item, guint state)
662 {
663 box3d_knot_click(item, state, 0);
664 }
666 static void box3d_knot1_click(SPItem *item, guint state)
667 {
668 box3d_knot_click(item, state, 1);
669 }
671 static void box3d_knot2_click(SPItem *item, guint state)
672 {
673 box3d_knot_click(item, state, 2);
674 }
676 static void box3d_knot3_click(SPItem *item, guint state)
677 {
678 box3d_knot_click(item, state, 3);
679 }
681 static void box3d_knot4_click(SPItem *item, guint state)
682 {
683 box3d_knot_click(item, state, 4);
684 }
686 static void box3d_knot5_click(SPItem *item, guint state)
687 {
688 box3d_knot_click(item, state, 5);
689 }
691 static void box3d_knot6_click(SPItem *item, guint state)
692 {
693 box3d_knot_click(item, state, 6);
694 }
696 static void box3d_knot7_click(SPItem *item, guint state)
697 {
698 box3d_knot_click(item, state, 7);
699 }
702 SPKnotHolder *
703 box3d_knot_holder(SPItem *item, SPDesktop *desktop)
704 {
705 g_assert(item != NULL);
706 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
708 sp_knot_holder_add(knot_holder, box3d_knot0_set, box3d_knot0_get, box3d_knot0_click,
709 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
710 sp_knot_holder_add(knot_holder, box3d_knot1_set, box3d_knot1_get, box3d_knot1_click,
711 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
712 sp_knot_holder_add(knot_holder, box3d_knot2_set, box3d_knot2_get, box3d_knot2_click,
713 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
714 sp_knot_holder_add(knot_holder, box3d_knot3_set, box3d_knot3_get, box3d_knot3_click,
715 _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
716 sp_knot_holder_add(knot_holder, box3d_knot4_set, box3d_knot4_get, box3d_knot4_click,
717 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
718 sp_knot_holder_add(knot_holder, box3d_knot5_set, box3d_knot5_get, box3d_knot5_click,
719 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
720 sp_knot_holder_add(knot_holder, box3d_knot6_set, box3d_knot6_get, box3d_knot6_click,
721 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
722 sp_knot_holder_add(knot_holder, box3d_knot7_set, box3d_knot7_get, box3d_knot7_click,
723 _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; with <b>Ctrl</b> to constrain to the directions of edges or diagonals"));
725 // center dragging
726 sp_knot_holder_add_full(knot_holder, box3d_knot_center_set, box3d_knot_center_get, NULL,
727 SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,_("Move the box in perspective."));
729 sp_pat_knot_holder(item, knot_holder);
731 return knot_holder;
732 }
736 /* SPArc */
738 /*
739 * return values:
740 * 1 : inside
741 * 0 : on the curves
742 * -1 : outside
743 */
744 static gint
745 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
746 {
747 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
748 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
750 gdouble s = dx * dx + dy * dy;
751 if (s < 1.0) return 1;
752 if (s > 1.0) return -1;
753 return 0;
754 }
756 static void
757 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
758 {
759 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
761 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
762 SPArc *arc = SP_ARC(item);
764 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
766 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
767 NR::scale sc(ge->rx.computed, ge->ry.computed);
768 ge->start = atan2(delta * sc.inverse());
769 if ( ( state & GDK_CONTROL_MASK )
770 && snaps )
771 {
772 ge->start = sp_round(ge->start, M_PI/snaps);
773 }
774 sp_genericellipse_normalize(ge);
775 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
776 }
778 static NR::Point sp_arc_start_get(SPItem *item)
779 {
780 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
781 SPArc *arc = SP_ARC(item);
783 return sp_arc_get_xy(arc, ge->start);
784 }
786 static void
787 sp_arc_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
788 {
789 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
791 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
792 SPArc *arc = SP_ARC(item);
794 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
796 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
797 NR::scale sc(ge->rx.computed, ge->ry.computed);
798 ge->end = atan2(delta * sc.inverse());
799 if ( ( state & GDK_CONTROL_MASK )
800 && snaps )
801 {
802 ge->end = sp_round(ge->end, M_PI/snaps);
803 }
804 sp_genericellipse_normalize(ge);
805 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
806 }
808 static NR::Point sp_arc_end_get(SPItem *item)
809 {
810 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
811 SPArc *arc = SP_ARC(item);
813 return sp_arc_get_xy(arc, ge->end);
814 }
816 static void
817 sp_arc_startend_click(SPItem *item, guint state)
818 {
819 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
821 if (state & GDK_SHIFT_MASK) {
822 ge->end = ge->start = 0;
823 ((SPObject *)ge)->updateRepr();
824 }
825 }
828 static void
829 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
830 {
831 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
832 SPArc *arc = SP_ARC(item);
834 NR::Point const s = snap_knot_position(arc, p);
836 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
838 if ( state & GDK_CONTROL_MASK ) {
839 ge->ry.computed = ge->rx.computed;
840 }
842 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
843 }
845 static NR::Point sp_arc_rx_get(SPItem *item)
846 {
847 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
849 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
850 }
852 static void
853 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
854 {
855 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
856 SPArc *arc = SP_ARC(item);
858 NR::Point const s = snap_knot_position(arc, p);
860 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
862 if ( state & GDK_CONTROL_MASK ) {
863 ge->rx.computed = ge->ry.computed;
864 }
866 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
867 }
869 static NR::Point sp_arc_ry_get(SPItem *item)
870 {
871 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
873 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
874 }
876 static void
877 sp_arc_rx_click(SPItem *item, guint state)
878 {
879 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
881 if (state & GDK_CONTROL_MASK) {
882 ge->ry.computed = ge->rx.computed;
883 ((SPObject *)ge)->updateRepr();
884 }
885 }
887 static void
888 sp_arc_ry_click(SPItem *item, guint state)
889 {
890 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
892 if (state & GDK_CONTROL_MASK) {
893 ge->rx.computed = ge->ry.computed;
894 ((SPObject *)ge)->updateRepr();
895 }
896 }
898 static SPKnotHolder *
899 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
900 {
901 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
903 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
904 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
905 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
906 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
907 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
908 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
909 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
910 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
911 _("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"));
912 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
913 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
914 _("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"));
916 sp_pat_knot_holder(item, knot_holder);
918 return knot_holder;
919 }
921 /* SPStar */
923 static void
924 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
925 {
926 SPStar *star = SP_STAR(item);
928 NR::Point const s = snap_knot_position(star, p);
930 NR::Point d = s - star->center;
932 double arg1 = atan2(d);
933 double darg1 = arg1 - star->arg[0];
935 if (state & GDK_MOD1_MASK) {
936 star->randomized = darg1/(star->arg[0] - star->arg[1]);
937 } else if (state & GDK_SHIFT_MASK) {
938 star->rounded = darg1/(star->arg[0] - star->arg[1]);
939 } else if (state & GDK_CONTROL_MASK) {
940 star->r[0] = L2(d);
941 } else {
942 star->r[0] = L2(d);
943 star->arg[0] = arg1;
944 star->arg[1] += darg1;
945 }
946 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
947 }
949 static void
950 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
951 {
952 SPStar *star = SP_STAR(item);
954 NR::Point const s = snap_knot_position(star, p);
956 if (star->flatsided == false) {
957 NR::Point d = s - star->center;
959 double arg1 = atan2(d);
960 double darg1 = arg1 - star->arg[1];
962 if (state & GDK_MOD1_MASK) {
963 star->randomized = darg1/(star->arg[0] - star->arg[1]);
964 } else if (state & GDK_SHIFT_MASK) {
965 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
966 } else if (state & GDK_CONTROL_MASK) {
967 star->r[1] = L2(d);
968 star->arg[1] = star->arg[0] + M_PI / star->sides;
969 }
970 else {
971 star->r[1] = L2(d);
972 star->arg[1] = atan2(d);
973 }
974 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
975 }
976 }
978 static NR::Point sp_star_knot1_get(SPItem *item)
979 {
980 g_assert(item != NULL);
982 SPStar *star = SP_STAR(item);
984 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
986 }
988 static NR::Point sp_star_knot2_get(SPItem *item)
989 {
990 g_assert(item != NULL);
992 SPStar *star = SP_STAR(item);
994 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
995 }
997 static void
998 sp_star_knot_click(SPItem *item, guint state)
999 {
1000 SPStar *star = SP_STAR(item);
1002 if (state & GDK_MOD1_MASK) {
1003 star->randomized = 0;
1004 ((SPObject *)star)->updateRepr();
1005 } else if (state & GDK_SHIFT_MASK) {
1006 star->rounded = 0;
1007 ((SPObject *)star)->updateRepr();
1008 } else if (state & GDK_CONTROL_MASK) {
1009 star->arg[1] = star->arg[0] + M_PI / star->sides;
1010 ((SPObject *)star)->updateRepr();
1011 }
1012 }
1014 static SPKnotHolder *
1015 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
1016 {
1017 /* we don't need to get parent knot_holder */
1018 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1019 g_assert(item != NULL);
1021 SPStar *star = SP_STAR(item);
1023 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
1024 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
1025 if (star->flatsided == false)
1026 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
1027 _("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"));
1029 sp_pat_knot_holder(item, knot_holder);
1031 return knot_holder;
1032 }
1034 /* SPSpiral */
1036 /*
1037 * set attributes via inner (t=t0) knot point:
1038 * [default] increase/decrease inner point
1039 * [shift] increase/decrease inner and outer arg synchronizely
1040 * [control] constrain inner arg to round per PI/4
1041 */
1042 static void
1043 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1044 {
1045 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1047 SPSpiral *spiral = SP_SPIRAL(item);
1049 gdouble dx = p[NR::X] - spiral->cx;
1050 gdouble dy = p[NR::Y] - spiral->cy;
1052 if (state & GDK_MOD1_MASK) {
1053 // adjust divergence by vertical drag, relative to rad
1054 double new_exp = (spiral->rad + dy)/(spiral->rad);
1055 spiral->exp = new_exp > 0? new_exp : 0;
1056 } else {
1057 // roll/unroll from inside
1058 gdouble arg_t0;
1059 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
1061 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
1062 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
1063 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
1065 /* round inner arg per PI/snaps, if CTRL is pressed */
1066 if ( ( state & GDK_CONTROL_MASK )
1067 && ( fabs(spiral->revo) > SP_EPSILON_2 )
1068 && ( snaps != 0 ) ) {
1069 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
1070 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
1071 }
1073 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1074 }
1076 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1077 }
1079 /*
1080 * set attributes via outer (t=1) knot point:
1081 * [default] increase/decrease revolution factor
1082 * [control] constrain inner arg to round per PI/4
1083 */
1084 static void
1085 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1086 {
1087 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1089 SPSpiral *spiral = SP_SPIRAL(item);
1091 gdouble dx = p[NR::X] - spiral->cx;
1092 gdouble dy = p[NR::Y] - spiral->cy;
1094 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
1095 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
1096 if (!(state & GDK_MOD1_MASK)) {
1097 // if alt not pressed, change also rad; otherwise it is locked
1098 spiral->rad = MAX(hypot(dx, dy), 0.001);
1099 }
1100 if ( ( state & GDK_CONTROL_MASK )
1101 && snaps ) {
1102 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
1103 }
1104 } else { // roll/unroll
1105 // arg of the spiral outer end
1106 double arg_1;
1107 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
1109 // its fractional part after the whole turns are subtracted
1110 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
1112 // arg of the mouse point relative to spiral center
1113 double mouse_angle = atan2(dy, dx);
1114 if (mouse_angle < 0)
1115 mouse_angle += 2*M_PI;
1117 // snap if ctrl
1118 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
1119 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
1120 }
1122 // by how much we want to rotate the outer point
1123 double diff = mouse_angle - arg_r;
1124 if (diff > M_PI)
1125 diff -= 2*M_PI;
1126 else if (diff < -M_PI)
1127 diff += 2*M_PI;
1129 // calculate the new rad;
1130 // the value of t corresponding to the angle arg_1 + diff:
1131 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1132 // the rad at that t:
1133 double rad_new = 0;
1134 if (t_temp > spiral->t0)
1135 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1137 // change the revo (converting diff from radians to the number of turns)
1138 spiral->revo += diff/(2*M_PI);
1139 if (spiral->revo < 1e-3)
1140 spiral->revo = 1e-3;
1142 // if alt not pressed and the values are sane, change the rad
1143 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1144 // adjust t0 too so that the inner point stays unmoved
1145 double r0;
1146 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1147 spiral->rad = rad_new;
1148 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1149 }
1150 if (!isFinite(spiral->t0)) spiral->t0 = 0.0;
1151 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1152 }
1154 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1155 }
1157 static NR::Point sp_spiral_inner_get(SPItem *item)
1158 {
1159 SPSpiral *spiral = SP_SPIRAL(item);
1161 return sp_spiral_get_xy(spiral, spiral->t0);
1162 }
1164 static NR::Point sp_spiral_outer_get(SPItem *item)
1165 {
1166 SPSpiral *spiral = SP_SPIRAL(item);
1168 return sp_spiral_get_xy(spiral, 1.0);
1169 }
1171 static void
1172 sp_spiral_inner_click(SPItem *item, guint state)
1173 {
1174 SPSpiral *spiral = SP_SPIRAL(item);
1176 if (state & GDK_MOD1_MASK) {
1177 spiral->exp = 1;
1178 ((SPObject *)spiral)->updateRepr();
1179 } else if (state & GDK_SHIFT_MASK) {
1180 spiral->t0 = 0;
1181 ((SPObject *)spiral)->updateRepr();
1182 }
1183 }
1185 static SPKnotHolder *
1186 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1187 {
1188 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1190 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1191 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1192 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1193 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1195 sp_pat_knot_holder(item, knot_holder);
1197 return knot_holder;
1198 }
1200 /* SPOffset */
1202 static void
1203 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/)
1204 {
1205 SPOffset *offset = SP_OFFSET(item);
1207 offset->rad = sp_offset_distance_to_original(offset, p);
1208 offset->knot = p;
1209 offset->knotSet = true;
1211 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1212 }
1215 static NR::Point sp_offset_offset_get(SPItem *item)
1216 {
1217 SPOffset *offset = SP_OFFSET(item);
1219 NR::Point np;
1220 sp_offset_top_point(offset,&np);
1221 return np;
1222 }
1224 static SPKnotHolder *
1225 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1226 {
1227 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1229 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1230 _("Adjust the <b>offset distance</b>"));
1232 sp_pat_knot_holder(item, knot_holder);
1234 return knot_holder;
1235 }
1237 static SPKnotHolder *
1238 sp_misc_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1239 {
1240 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1241 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1242 {
1243 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1245 sp_pat_knot_holder(item, knot_holder);
1247 return knot_holder;
1248 }
1249 return NULL;
1250 }
1252 static void
1253 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1254 {
1255 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1256 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1257 {
1258 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1259 // TRANSLATORS: This refers to the pattern that's inside the object
1260 _("<b>Move</b> the pattern fill inside the object"));
1261 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1262 _("<b>Scale</b> the pattern fill uniformly"));
1263 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1264 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1265 }
1266 }
1268 static NR::Point sp_flowtext_corner_get(SPItem *item)
1269 {
1270 SPRect *rect = SP_RECT(item);
1272 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1273 }
1275 static void
1276 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1277 {
1278 SPRect *rect = SP_RECT(item);
1280 sp_rect_wh_set_internal(rect, p, origin, state);
1281 }
1283 static SPKnotHolder *
1284 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1285 {
1286 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1288 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1289 _("Drag to resize the <b>flowed text frame</b>"));
1291 return knot_holder;
1292 }
1295 /*
1296 Local Variables:
1297 mode:c++
1298 c-file-style:"stroustrup"
1299 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1300 indent-tabs-mode:nil
1301 fill-column:99
1302 End:
1303 */
1304 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :