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"
35 #include "live_effects/effect.h"
37 #include "sp-pattern.h"
38 #include "sp-path.h"
40 #include <glibmm/i18n.h>
42 #include "object-edit.h"
44 #include <libnr/nr-scale-ops.h>
46 #include "xml/repr.h"
48 #include "2geom/isnan.h"
50 #define sp_round(v,m) (((v) < 0.0) ? ((ceil((v) / (m) - 0.5)) * (m)) : ((floor((v) / (m) + 0.5)) * (m)))
52 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop);
53 static SPKnotHolder *box3d_knot_holder(SPItem *item, SPDesktop *desktop);
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 static SPKnotHolder *sp_lpe_knot_holder(SPItem *item, SPDesktop *desktop)
63 {
64 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
66 Inkscape::LivePathEffect::Effect *effect = sp_lpe_item_get_livepatheffect(SP_LPE_ITEM(item));
67 effect->addHandles(knot_holder);
69 return knot_holder;
70 }
72 SPKnotHolder *
73 sp_item_knot_holder(SPItem *item, SPDesktop *desktop)
74 {
75 if (sp_lpe_item_has_path_effect(SP_LPE_ITEM(item)) &&
76 sp_lpe_item_get_livepatheffect(SP_LPE_ITEM(item))->providesKnotholder()) {
77 return sp_lpe_knot_holder(item, desktop);
78 } else
79 if (SP_IS_RECT(item)) {
80 return sp_rect_knot_holder(item, desktop);
81 } else if (SP_IS_BOX3D(item)) {
82 return box3d_knot_holder(item, desktop);
83 } else if (SP_IS_ARC(item)) {
84 return sp_arc_knot_holder(item, desktop);
85 } else if (SP_IS_STAR(item)) {
86 return sp_star_knot_holder(item, desktop);
87 } else if (SP_IS_SPIRAL(item)) {
88 return sp_spiral_knot_holder(item, desktop);
89 } else if (SP_IS_OFFSET(item)) {
90 return sp_offset_knot_holder(item, desktop);
91 } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
92 return sp_flowtext_knot_holder(item, desktop);
93 } else {
94 return sp_misc_knot_holder(item, desktop);
95 }
97 return NULL;
98 }
101 /* Pattern manipulation */
103 static gdouble sp_pattern_extract_theta(SPPattern *pat, gdouble scale)
104 {
105 gdouble theta = asin(pat->patternTransform[1] / scale);
106 if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
107 return theta;
108 }
110 static gdouble sp_pattern_extract_scale(SPPattern *pat)
111 {
112 gdouble s = pat->patternTransform[1];
113 gdouble c = pat->patternTransform[0];
114 gdouble xscale = sqrt(c * c + s * s);
115 return xscale;
116 }
118 static NR::Point sp_pattern_extract_trans(SPPattern const *pat)
119 {
120 return NR::Point(pat->patternTransform[4], pat->patternTransform[5]);
121 }
123 static void
124 sp_pattern_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
125 {
126 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
128 NR::Point p_snapped = p;
130 if ( state & GDK_CONTROL_MASK ) {
131 if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
132 p_snapped[NR::Y] = origin[NR::Y];
133 } else {
134 p_snapped[NR::X] = origin[NR::X];
135 }
136 }
138 if (state) {
139 NR::Point const q = p_snapped - sp_pattern_extract_trans(pat);
140 sp_item_adjust_pattern(item, NR::Matrix(NR::translate(q)));
141 }
143 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
144 }
147 static NR::Point sp_pattern_xy_get(SPItem *item)
148 {
149 SPPattern const *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
150 return sp_pattern_extract_trans(pat);
151 }
153 static NR::Point sp_pattern_angle_get(SPItem *item)
154 {
155 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
157 gdouble x = (pattern_width(pat)*0.5);
158 gdouble y = 0;
159 NR::Point delta = NR::Point(x,y);
160 gdouble scale = sp_pattern_extract_scale(pat);
161 gdouble theta = sp_pattern_extract_theta(pat, scale);
162 delta = delta * NR::Matrix(NR::rotate(theta))*NR::Matrix(NR::scale(scale,scale));
163 delta = delta + sp_pattern_extract_trans(pat);
164 return delta;
165 }
167 static void
168 sp_pattern_angle_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
169 {
170 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
172 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
174 // get the angle from pattern 0,0 to the cursor pos
175 NR::Point delta = p - sp_pattern_extract_trans(pat);
176 gdouble theta = atan2(delta);
178 if ( state & GDK_CONTROL_MASK ) {
179 theta = sp_round(theta, M_PI/snaps);
180 }
182 // get the scale from the current transform so we can keep it.
183 gdouble scl = sp_pattern_extract_scale(pat);
184 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
185 NR::Point const t = sp_pattern_extract_trans(pat);
186 rot[4] = t[NR::X];
187 rot[5] = t[NR::Y];
188 sp_item_adjust_pattern(item, rot, true);
189 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
190 }
192 static void
193 sp_pattern_scale_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/)
194 {
195 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
197 // Get the scale from the position of the knotholder,
198 NR::Point d = p - sp_pattern_extract_trans(pat);
199 gdouble s = NR::L2(d);
200 gdouble pat_x = pattern_width(pat) * 0.5;
201 gdouble pat_y = pattern_height(pat) * 0.5;
202 gdouble pat_h = hypot(pat_x, pat_y);
203 gdouble scl = s / pat_h;
205 // get angle from current transform, (need get current scale first to calculate angle)
206 gdouble oldscale = sp_pattern_extract_scale(pat);
207 gdouble theta = sp_pattern_extract_theta(pat,oldscale);
209 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
210 NR::Point const t = sp_pattern_extract_trans(pat);
211 rot[4] = t[NR::X];
212 rot[5] = t[NR::Y];
213 sp_item_adjust_pattern(item, rot, true);
214 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
215 }
218 static NR::Point sp_pattern_scale_get(SPItem *item)
219 {
220 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
222 gdouble x = pattern_width(pat)*0.5;
223 gdouble y = pattern_height(pat)*0.5;
224 NR::Point delta = NR::Point(x,y);
225 NR::Matrix a = pat->patternTransform;
226 a[4] = 0;
227 a[5] = 0;
228 delta = delta * a;
229 delta = delta + sp_pattern_extract_trans(pat);
230 return delta;
231 }
233 /* SPRect */
235 static NR::Point snap_knot_position(SPItem *item, NR::Point const &p)
236 {
237 SPDesktop const *desktop = inkscape_active_desktop();
238 NR::Matrix const i2d (sp_item_i2d_affine (item));
239 NR::Point s = p * i2d;
240 SnapManager &m = desktop->namedview->snap_manager;
241 m.setup(desktop, item);
242 m.freeSnapReturnByRef(Inkscape::Snapper::SNAPPOINT_NODE, s);
243 return s * i2d.inverse();
244 }
246 static NR::Point sp_rect_rx_get(SPItem *item)
247 {
248 SPRect *rect = SP_RECT(item);
250 return NR::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed);
251 }
253 static void sp_rect_rx_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
254 {
255 SPRect *rect = SP_RECT(item);
257 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
258 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
259 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
261 if (state & GDK_CONTROL_MASK) {
262 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
263 rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, temp);
264 rect->rx._set = rect->ry._set = true;
266 } else {
267 rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, rect->width.computed / 2.0);
268 rect->rx._set = true;
269 }
271 ((SPObject*)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
272 }
275 static NR::Point sp_rect_ry_get(SPItem *item)
276 {
277 SPRect *rect = SP_RECT(item);
279 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed);
280 }
282 static void sp_rect_ry_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
283 {
284 SPRect *rect = SP_RECT(item);
286 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
287 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
288 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
290 if (state & GDK_CONTROL_MASK) {
291 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
292 rect->rx.computed = rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed, 0.0, temp);
293 rect->ry._set = rect->rx._set = true;
294 } else {
295 if (!rect->rx._set || rect->rx.computed == 0) {
296 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
297 0.0,
298 MIN(rect->height.computed / 2.0, rect->width.computed / 2.0));
299 } else {
300 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
301 0.0,
302 rect->height.computed / 2.0);
303 }
305 rect->ry._set = true;
306 }
308 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
309 }
311 /**
312 * Remove rounding from a rectangle.
313 */
314 static void rect_remove_rounding(SPRect *rect)
315 {
316 SP_OBJECT_REPR(rect)->setAttribute("rx", NULL);
317 SP_OBJECT_REPR(rect)->setAttribute("ry", NULL);
318 }
320 /**
321 * Called when the horizontal rounding radius knot is clicked.
322 */
323 static void sp_rect_rx_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("ry", SP_OBJECT_REPR(rect)->attribute("rx"));
332 }
333 }
335 /**
336 * Called when the vertical rounding radius knot is clicked.
337 */
338 static void sp_rect_ry_knot_click(SPItem *item, guint state)
339 {
340 SPRect *rect = SP_RECT(item);
342 if (state & GDK_SHIFT_MASK) {
343 rect_remove_rounding(rect);
344 } else if (state & GDK_CONTROL_MASK) {
345 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
346 SP_OBJECT_REPR(rect)->setAttribute("rx", SP_OBJECT_REPR(rect)->attribute("ry"));
347 }
348 }
350 #define SGN(x) ((x)>0?1:((x)<0?-1:0))
352 static void sp_rect_clamp_radii(SPRect *rect)
353 {
354 // clamp rounding radii so that they do not exceed width/height
355 if (2 * rect->rx.computed > rect->width.computed) {
356 rect->rx.computed = 0.5 * rect->width.computed;
357 rect->rx._set = true;
358 }
359 if (2 * rect->ry.computed > rect->height.computed) {
360 rect->ry.computed = 0.5 * rect->height.computed;
361 rect->ry._set = true;
362 }
363 }
365 static NR::Point sp_rect_wh_get(SPItem *item)
366 {
367 SPRect *rect = SP_RECT(item);
369 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
370 }
372 static void sp_rect_wh_set_internal(SPRect *rect, NR::Point const &p, NR::Point const &origin, guint state)
373 {
374 NR::Point const s = snap_knot_position(rect, p);
376 if (state & GDK_CONTROL_MASK) {
377 // original width/height when drag started
378 gdouble const w_orig = (origin[NR::X] - rect->x.computed);
379 gdouble const h_orig = (origin[NR::Y] - rect->y.computed);
381 //original ratio
382 gdouble const ratio = (w_orig / h_orig);
384 // mouse displacement since drag started
385 gdouble const minx = s[NR::X] - origin[NR::X];
386 gdouble const miny = s[NR::Y] - origin[NR::Y];
388 if (fabs(minx) > fabs(miny)) {
390 // snap to horizontal or diagonal
391 rect->width.computed = MAX(w_orig + minx, 0);
392 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
393 // closer to the diagonal and in same-sign quarters, change both using ratio
394 rect->height.computed = MAX(h_orig + minx / ratio, 0);
395 } else {
396 // closer to the horizontal, change only width, height is h_orig
397 rect->height.computed = MAX(h_orig, 0);
398 }
400 } else {
401 // snap to vertical or diagonal
402 rect->height.computed = MAX(h_orig + miny, 0);
403 if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) {
404 // closer to the diagonal and in same-sign quarters, change both using ratio
405 rect->width.computed = MAX(w_orig + miny * ratio, 0);
406 } else {
407 // closer to the vertical, change only height, width is w_orig
408 rect->width.computed = MAX(w_orig, 0);
409 }
410 }
412 rect->width._set = rect->height._set = true;
414 } else {
415 // move freely
416 rect->width.computed = MAX(s[NR::X] - rect->x.computed, 0);
417 rect->height.computed = MAX(s[NR::Y] - rect->y.computed, 0);
418 rect->width._set = rect->height._set = true;
419 }
421 sp_rect_clamp_radii(rect);
423 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
424 }
426 static void sp_rect_wh_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
427 {
428 SPRect *rect = SP_RECT(item);
430 sp_rect_wh_set_internal(rect, p, origin, state);
431 }
433 static NR::Point sp_rect_xy_get(SPItem *item)
434 {
435 SPRect *rect = SP_RECT(item);
437 return NR::Point(rect->x.computed, rect->y.computed);
438 }
440 static void sp_rect_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
441 {
442 SPRect *rect = SP_RECT(item);
444 // opposite corner (unmoved)
445 gdouble opposite_x = (rect->x.computed + rect->width.computed);
446 gdouble opposite_y = (rect->y.computed + rect->height.computed);
448 // original width/height when drag started
449 gdouble w_orig = opposite_x - origin[NR::X];
450 gdouble h_orig = opposite_y - origin[NR::Y];
452 NR::Point const s = snap_knot_position(rect, p);
454 // mouse displacement since drag started
455 gdouble minx = s[NR::X] - origin[NR::X];
456 gdouble miny = s[NR::Y] - origin[NR::Y];
458 if (state & GDK_CONTROL_MASK) {
459 //original ratio
460 gdouble ratio = (w_orig / h_orig);
462 if (fabs(minx) > fabs(miny)) {
464 // snap to horizontal or diagonal
465 rect->x.computed = MIN(s[NR::X], opposite_x);
466 rect->width.computed = MAX(w_orig - minx, 0);
467 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
468 // closer to the diagonal and in same-sign quarters, change both using ratio
469 rect->y.computed = MIN(origin[NR::Y] + minx / ratio, opposite_y);
470 rect->height.computed = MAX(h_orig - minx / ratio, 0);
471 } else {
472 // closer to the horizontal, change only width, height is h_orig
473 rect->y.computed = MIN(origin[NR::Y], opposite_y);
474 rect->height.computed = MAX(h_orig, 0);
475 }
477 } else {
479 // snap to vertical or diagonal
480 rect->y.computed = MIN(s[NR::Y], opposite_y);
481 rect->height.computed = MAX(h_orig - miny, 0);
482 if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
483 // closer to the diagonal and in same-sign quarters, change both using ratio
484 rect->x.computed = MIN(origin[NR::X] + miny * ratio, opposite_x);
485 rect->width.computed = MAX(w_orig - miny * ratio, 0);
486 } else {
487 // closer to the vertical, change only height, width is w_orig
488 rect->x.computed = MIN(origin[NR::X], opposite_x);
489 rect->width.computed = MAX(w_orig, 0);
490 }
492 }
494 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
496 } else {
497 // move freely
498 rect->x.computed = MIN(s[NR::X], opposite_x);
499 rect->width.computed = MAX(w_orig - minx, 0);
500 rect->y.computed = MIN(s[NR::Y], opposite_y);
501 rect->height.computed = MAX(h_orig - miny, 0);
502 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
503 }
505 sp_rect_clamp_radii(rect);
507 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
508 }
510 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop)
511 {
512 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
514 sp_knot_holder_add_full(
515 knot_holder, sp_rect_rx_set, sp_rect_rx_get, sp_rect_rx_knot_click,
516 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
517 _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> to make the vertical "
518 "radius the same"));
520 sp_knot_holder_add_full(
521 knot_holder, sp_rect_ry_set, sp_rect_ry_get, sp_rect_ry_knot_click,
522 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
523 _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> to make the horizontal "
524 "radius the same")
525 );
527 sp_knot_holder_add_full(
528 knot_holder, sp_rect_wh_set, sp_rect_wh_get, NULL,
529 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
530 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
531 "or stretch in one dimension only")
532 );
534 sp_knot_holder_add_full(
535 knot_holder, sp_rect_xy_set, sp_rect_xy_get, NULL,
536 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
537 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
538 "or stretch in one dimension only")
539 );
541 sp_pat_knot_holder(item, knot_holder);
542 return knot_holder;
543 }
545 /* Box3D (= the new 3D box structure) */
547 static NR::Point box3d_knot_get(SPItem *item, guint knot_id)
548 {
549 return box3d_get_corner_screen(SP_BOX3D(item), knot_id);
550 }
552 static void box3d_knot_set(SPItem *item, guint knot_id, NR::Point const &new_pos, NR::Point const &/*origin*/, guint state)
553 {
554 NR::Point const s = snap_knot_position(item, new_pos);
556 g_assert(item != NULL);
557 SPBox3D *box = SP_BOX3D(item);
558 NR::Matrix const i2d (sp_item_i2d_affine (item));
560 Box3D::Axis movement;
561 if ((knot_id < 4) != (state & GDK_SHIFT_MASK)) {
562 movement = Box3D::XY;
563 } else {
564 movement = Box3D::Z;
565 }
567 box3d_set_corner (box, knot_id, s * i2d, movement, (state & GDK_CONTROL_MASK));
568 box3d_set_z_orders(box);
569 box3d_position_set(box);
570 }
572 static NR::Point box3d_knot_center_get (SPItem *item)
573 {
574 return box3d_get_center_screen (SP_BOX3D(item));
575 }
577 static void box3d_knot_center_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
578 {
579 NR::Point const s = snap_knot_position(item, new_pos);
581 SPBox3D *box = SP_BOX3D(item);
582 NR::Matrix const i2d (sp_item_i2d_affine (item));
584 box3d_set_center (SP_BOX3D(item), s * i2d, origin * i2d, !(state & GDK_SHIFT_MASK) ? Box3D::XY : Box3D::Z,
585 state & GDK_CONTROL_MASK);
587 box3d_set_z_orders(box);
588 box3d_position_set(box);
589 }
591 static void box3d_knot0_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
592 {
593 box3d_knot_set(item, 0, new_pos, origin, state);
594 }
596 static void box3d_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
597 {
598 box3d_knot_set(item, 1, new_pos, origin, state);
599 }
601 static void box3d_knot2_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
602 {
603 box3d_knot_set(item, 2, new_pos, origin, state);
604 }
606 static void box3d_knot3_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
607 {
608 box3d_knot_set(item, 3, new_pos, origin, state);
609 }
611 static void box3d_knot4_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
612 {
613 box3d_knot_set(item, 4, new_pos, origin, state);
614 }
616 static void box3d_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
617 {
618 box3d_knot_set(item, 5, new_pos, origin, state);
619 }
621 static void box3d_knot6_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
622 {
623 box3d_knot_set(item, 6, new_pos, origin, state);
624 }
626 static void box3d_knot7_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
627 {
628 box3d_knot_set(item, 7, new_pos, origin, state);
629 }
631 static NR::Point box3d_knot0_get(SPItem *item)
632 {
633 return box3d_knot_get(item, 0);
634 }
636 static NR::Point box3d_knot1_get(SPItem *item)
637 {
638 return box3d_knot_get(item, 1);
639 }
641 static NR::Point box3d_knot2_get(SPItem *item)
642 {
643 return box3d_knot_get(item, 2);
644 }
646 static NR::Point box3d_knot3_get(SPItem *item)
647 {
648 return box3d_knot_get(item, 3);
649 }
651 static NR::Point box3d_knot4_get(SPItem *item)
652 {
653 return box3d_knot_get(item, 4);
654 }
656 static NR::Point box3d_knot5_get(SPItem *item)
657 {
658 return box3d_knot_get(item, 5);
659 }
661 static NR::Point box3d_knot6_get(SPItem *item)
662 {
663 return box3d_knot_get(item, 6);
664 }
666 static NR::Point box3d_knot7_get(SPItem *item)
667 {
668 return box3d_knot_get(item, 7);
669 }
671 SPKnotHolder *
672 box3d_knot_holder(SPItem *item, SPDesktop *desktop)
673 {
674 g_assert(item != NULL);
675 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
677 sp_knot_holder_add(knot_holder, box3d_knot0_set, box3d_knot0_get, NULL,
678 _("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"));
679 sp_knot_holder_add(knot_holder, box3d_knot1_set, box3d_knot1_get, NULL,
680 _("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"));
681 sp_knot_holder_add(knot_holder, box3d_knot2_set, box3d_knot2_get, NULL,
682 _("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"));
683 sp_knot_holder_add(knot_holder, box3d_knot3_set, box3d_knot3_get, NULL,
684 _("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"));
685 sp_knot_holder_add(knot_holder, box3d_knot4_set, box3d_knot4_get, NULL,
686 _("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"));
687 sp_knot_holder_add(knot_holder, box3d_knot5_set, box3d_knot5_get, NULL,
688 _("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"));
689 sp_knot_holder_add(knot_holder, box3d_knot6_set, box3d_knot6_get, NULL,
690 _("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"));
691 sp_knot_holder_add(knot_holder, box3d_knot7_set, box3d_knot7_get, NULL,
692 _("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"));
694 // center dragging
695 sp_knot_holder_add_full(knot_holder, box3d_knot_center_set, box3d_knot_center_get, NULL,
696 SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,_("Move the box in perspective"));
698 sp_pat_knot_holder(item, knot_holder);
700 return knot_holder;
701 }
705 /* SPArc */
707 /*
708 * return values:
709 * 1 : inside
710 * 0 : on the curves
711 * -1 : outside
712 */
713 static gint
714 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
715 {
716 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
717 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
719 gdouble s = dx * dx + dy * dy;
720 if (s < 1.0) return 1;
721 if (s > 1.0) return -1;
722 return 0;
723 }
725 static void
726 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
727 {
728 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
730 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
731 SPArc *arc = SP_ARC(item);
733 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
735 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
736 NR::scale sc(ge->rx.computed, ge->ry.computed);
737 ge->start = atan2(delta * sc.inverse());
738 if ( ( state & GDK_CONTROL_MASK )
739 && snaps )
740 {
741 ge->start = sp_round(ge->start, M_PI/snaps);
742 }
743 sp_genericellipse_normalize(ge);
744 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
745 }
747 static NR::Point sp_arc_start_get(SPItem *item)
748 {
749 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
750 SPArc *arc = SP_ARC(item);
752 return sp_arc_get_xy(arc, ge->start);
753 }
755 static void
756 sp_arc_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
757 {
758 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
760 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
761 SPArc *arc = SP_ARC(item);
763 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
765 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
766 NR::scale sc(ge->rx.computed, ge->ry.computed);
767 ge->end = atan2(delta * sc.inverse());
768 if ( ( state & GDK_CONTROL_MASK )
769 && snaps )
770 {
771 ge->end = sp_round(ge->end, M_PI/snaps);
772 }
773 sp_genericellipse_normalize(ge);
774 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
775 }
777 static NR::Point sp_arc_end_get(SPItem *item)
778 {
779 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
780 SPArc *arc = SP_ARC(item);
782 return sp_arc_get_xy(arc, ge->end);
783 }
785 static void
786 sp_arc_startend_click(SPItem *item, guint state)
787 {
788 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
790 if (state & GDK_SHIFT_MASK) {
791 ge->end = ge->start = 0;
792 ((SPObject *)ge)->updateRepr();
793 }
794 }
797 static void
798 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
799 {
800 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
801 SPArc *arc = SP_ARC(item);
803 NR::Point const s = snap_knot_position(arc, p);
805 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
807 if ( state & GDK_CONTROL_MASK ) {
808 ge->ry.computed = ge->rx.computed;
809 }
811 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
812 }
814 static NR::Point sp_arc_rx_get(SPItem *item)
815 {
816 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
818 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
819 }
821 static void
822 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
823 {
824 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
825 SPArc *arc = SP_ARC(item);
827 NR::Point const s = snap_knot_position(arc, p);
829 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
831 if ( state & GDK_CONTROL_MASK ) {
832 ge->rx.computed = ge->ry.computed;
833 }
835 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
836 }
838 static NR::Point sp_arc_ry_get(SPItem *item)
839 {
840 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
842 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
843 }
845 static void
846 sp_arc_rx_click(SPItem *item, guint state)
847 {
848 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
850 if (state & GDK_CONTROL_MASK) {
851 ge->ry.computed = ge->rx.computed;
852 ((SPObject *)ge)->updateRepr();
853 }
854 }
856 static void
857 sp_arc_ry_click(SPItem *item, guint state)
858 {
859 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
861 if (state & GDK_CONTROL_MASK) {
862 ge->rx.computed = ge->ry.computed;
863 ((SPObject *)ge)->updateRepr();
864 }
865 }
867 static SPKnotHolder *
868 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
869 {
870 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
872 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
873 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
874 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
875 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
876 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
877 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
878 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
879 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
880 _("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"));
881 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
882 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
883 _("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"));
885 sp_pat_knot_holder(item, knot_holder);
887 return knot_holder;
888 }
890 /* SPStar */
892 static void
893 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
894 {
895 SPStar *star = SP_STAR(item);
897 NR::Point const s = snap_knot_position(star, p);
899 NR::Point d = s - star->center;
901 double arg1 = atan2(d);
902 double darg1 = arg1 - star->arg[0];
904 if (state & GDK_MOD1_MASK) {
905 star->randomized = darg1/(star->arg[0] - star->arg[1]);
906 } else if (state & GDK_SHIFT_MASK) {
907 star->rounded = darg1/(star->arg[0] - star->arg[1]);
908 } else if (state & GDK_CONTROL_MASK) {
909 star->r[0] = L2(d);
910 } else {
911 star->r[0] = L2(d);
912 star->arg[0] = arg1;
913 star->arg[1] += darg1;
914 }
915 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
916 }
918 static void
919 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
920 {
921 SPStar *star = SP_STAR(item);
923 NR::Point const s = snap_knot_position(star, p);
925 if (star->flatsided == false) {
926 NR::Point d = s - star->center;
928 double arg1 = atan2(d);
929 double darg1 = arg1 - star->arg[1];
931 if (state & GDK_MOD1_MASK) {
932 star->randomized = darg1/(star->arg[0] - star->arg[1]);
933 } else if (state & GDK_SHIFT_MASK) {
934 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
935 } else if (state & GDK_CONTROL_MASK) {
936 star->r[1] = L2(d);
937 star->arg[1] = star->arg[0] + M_PI / star->sides;
938 }
939 else {
940 star->r[1] = L2(d);
941 star->arg[1] = atan2(d);
942 }
943 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
944 }
945 }
947 static NR::Point sp_star_knot1_get(SPItem *item)
948 {
949 g_assert(item != NULL);
951 SPStar *star = SP_STAR(item);
953 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
955 }
957 static NR::Point sp_star_knot2_get(SPItem *item)
958 {
959 g_assert(item != NULL);
961 SPStar *star = SP_STAR(item);
963 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
964 }
966 static void
967 sp_star_knot_click(SPItem *item, guint state)
968 {
969 SPStar *star = SP_STAR(item);
971 if (state & GDK_MOD1_MASK) {
972 star->randomized = 0;
973 ((SPObject *)star)->updateRepr();
974 } else if (state & GDK_SHIFT_MASK) {
975 star->rounded = 0;
976 ((SPObject *)star)->updateRepr();
977 } else if (state & GDK_CONTROL_MASK) {
978 star->arg[1] = star->arg[0] + M_PI / star->sides;
979 ((SPObject *)star)->updateRepr();
980 }
981 }
983 static SPKnotHolder *
984 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
985 {
986 /* we don't need to get parent knot_holder */
987 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
988 g_assert(item != NULL);
990 SPStar *star = SP_STAR(item);
992 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
993 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
994 if (star->flatsided == false)
995 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
996 _("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"));
998 sp_pat_knot_holder(item, knot_holder);
1000 return knot_holder;
1001 }
1003 /* SPSpiral */
1005 /*
1006 * set attributes via inner (t=t0) knot point:
1007 * [default] increase/decrease inner point
1008 * [shift] increase/decrease inner and outer arg synchronizely
1009 * [control] constrain inner arg to round per PI/4
1010 */
1011 static void
1012 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1013 {
1014 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1016 SPSpiral *spiral = SP_SPIRAL(item);
1018 gdouble dx = p[NR::X] - spiral->cx;
1019 gdouble dy = p[NR::Y] - spiral->cy;
1021 if (state & GDK_MOD1_MASK) {
1022 // adjust divergence by vertical drag, relative to rad
1023 double new_exp = (spiral->rad + dy)/(spiral->rad);
1024 spiral->exp = new_exp > 0? new_exp : 0;
1025 } else {
1026 // roll/unroll from inside
1027 gdouble arg_t0;
1028 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
1030 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
1031 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
1032 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
1034 /* round inner arg per PI/snaps, if CTRL is pressed */
1035 if ( ( state & GDK_CONTROL_MASK )
1036 && ( fabs(spiral->revo) > SP_EPSILON_2 )
1037 && ( snaps != 0 ) ) {
1038 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
1039 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
1040 }
1042 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1043 }
1045 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1046 }
1048 /*
1049 * set attributes via outer (t=1) knot point:
1050 * [default] increase/decrease revolution factor
1051 * [control] constrain inner arg to round per PI/4
1052 */
1053 static void
1054 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1055 {
1056 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1058 SPSpiral *spiral = SP_SPIRAL(item);
1060 gdouble dx = p[NR::X] - spiral->cx;
1061 gdouble dy = p[NR::Y] - spiral->cy;
1063 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
1064 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
1065 if (!(state & GDK_MOD1_MASK)) {
1066 // if alt not pressed, change also rad; otherwise it is locked
1067 spiral->rad = MAX(hypot(dx, dy), 0.001);
1068 }
1069 if ( ( state & GDK_CONTROL_MASK )
1070 && snaps ) {
1071 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
1072 }
1073 } else { // roll/unroll
1074 // arg of the spiral outer end
1075 double arg_1;
1076 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
1078 // its fractional part after the whole turns are subtracted
1079 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
1081 // arg of the mouse point relative to spiral center
1082 double mouse_angle = atan2(dy, dx);
1083 if (mouse_angle < 0)
1084 mouse_angle += 2*M_PI;
1086 // snap if ctrl
1087 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
1088 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
1089 }
1091 // by how much we want to rotate the outer point
1092 double diff = mouse_angle - arg_r;
1093 if (diff > M_PI)
1094 diff -= 2*M_PI;
1095 else if (diff < -M_PI)
1096 diff += 2*M_PI;
1098 // calculate the new rad;
1099 // the value of t corresponding to the angle arg_1 + diff:
1100 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1101 // the rad at that t:
1102 double rad_new = 0;
1103 if (t_temp > spiral->t0)
1104 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1106 // change the revo (converting diff from radians to the number of turns)
1107 spiral->revo += diff/(2*M_PI);
1108 if (spiral->revo < 1e-3)
1109 spiral->revo = 1e-3;
1111 // if alt not pressed and the values are sane, change the rad
1112 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1113 // adjust t0 too so that the inner point stays unmoved
1114 double r0;
1115 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1116 spiral->rad = rad_new;
1117 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1118 }
1119 if (!IS_FINITE(spiral->t0)) spiral->t0 = 0.0;
1120 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1121 }
1123 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1124 }
1126 static NR::Point sp_spiral_inner_get(SPItem *item)
1127 {
1128 SPSpiral *spiral = SP_SPIRAL(item);
1130 return sp_spiral_get_xy(spiral, spiral->t0);
1131 }
1133 static NR::Point sp_spiral_outer_get(SPItem *item)
1134 {
1135 SPSpiral *spiral = SP_SPIRAL(item);
1137 return sp_spiral_get_xy(spiral, 1.0);
1138 }
1140 static void
1141 sp_spiral_inner_click(SPItem *item, guint state)
1142 {
1143 SPSpiral *spiral = SP_SPIRAL(item);
1145 if (state & GDK_MOD1_MASK) {
1146 spiral->exp = 1;
1147 ((SPObject *)spiral)->updateRepr();
1148 } else if (state & GDK_SHIFT_MASK) {
1149 spiral->t0 = 0;
1150 ((SPObject *)spiral)->updateRepr();
1151 }
1152 }
1154 static SPKnotHolder *
1155 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1156 {
1157 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1159 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1160 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1161 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1162 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1164 sp_pat_knot_holder(item, knot_holder);
1166 return knot_holder;
1167 }
1169 /* SPOffset */
1171 static void
1172 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/)
1173 {
1174 SPOffset *offset = SP_OFFSET(item);
1176 offset->rad = sp_offset_distance_to_original(offset, p);
1177 offset->knot = p;
1178 offset->knotSet = true;
1180 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1181 }
1184 static NR::Point sp_offset_offset_get(SPItem *item)
1185 {
1186 SPOffset *offset = SP_OFFSET(item);
1188 NR::Point np;
1189 sp_offset_top_point(offset,&np);
1190 return np;
1191 }
1193 static SPKnotHolder *
1194 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1195 {
1196 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1198 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1199 _("Adjust the <b>offset distance</b>"));
1201 sp_pat_knot_holder(item, knot_holder);
1203 return knot_holder;
1204 }
1206 static SPKnotHolder *
1207 sp_misc_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1208 {
1209 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1210 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1211 {
1212 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1214 sp_pat_knot_holder(item, knot_holder);
1216 return knot_holder;
1217 }
1218 return NULL;
1219 }
1221 static void
1222 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1223 {
1224 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1225 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1226 {
1227 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1228 // TRANSLATORS: This refers to the pattern that's inside the object
1229 _("<b>Move</b> the pattern fill inside the object"));
1230 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1231 _("<b>Scale</b> the pattern fill uniformly"));
1232 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1233 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1234 }
1235 }
1237 static NR::Point sp_flowtext_corner_get(SPItem *item)
1238 {
1239 SPRect *rect = SP_RECT(item);
1241 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1242 }
1244 static void
1245 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1246 {
1247 SPRect *rect = SP_RECT(item);
1249 sp_rect_wh_set_internal(rect, p, origin, state);
1250 }
1252 static SPKnotHolder *
1253 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1254 {
1255 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1257 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1258 _("Drag to resize the <b>flowed text frame</b>"));
1260 return knot_holder;
1261 }
1264 /*
1265 Local Variables:
1266 mode:c++
1267 c-file-style:"stroustrup"
1268 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1269 indent-tabs-mode:nil
1270 fill-column:99
1271 End:
1272 */
1273 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :