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))->isVisible() &&
77 sp_lpe_item_get_livepatheffect(SP_LPE_ITEM(item))->providesKnotholder()) {
78 return sp_lpe_knot_holder(item, desktop);
79 } else
80 if (SP_IS_RECT(item)) {
81 return sp_rect_knot_holder(item, desktop);
82 } else if (SP_IS_BOX3D(item)) {
83 return box3d_knot_holder(item, desktop);
84 } else if (SP_IS_ARC(item)) {
85 return sp_arc_knot_holder(item, desktop);
86 } else if (SP_IS_STAR(item)) {
87 return sp_star_knot_holder(item, desktop);
88 } else if (SP_IS_SPIRAL(item)) {
89 return sp_spiral_knot_holder(item, desktop);
90 } else if (SP_IS_OFFSET(item)) {
91 return sp_offset_knot_holder(item, desktop);
92 } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
93 return sp_flowtext_knot_holder(item, desktop);
94 } else {
95 return sp_misc_knot_holder(item, desktop);
96 }
98 return NULL;
99 }
102 /* Pattern manipulation */
104 static gdouble sp_pattern_extract_theta(SPPattern *pat, gdouble scale)
105 {
106 gdouble theta = asin(pat->patternTransform[1] / scale);
107 if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
108 return theta;
109 }
111 static gdouble sp_pattern_extract_scale(SPPattern *pat)
112 {
113 gdouble s = pat->patternTransform[1];
114 gdouble c = pat->patternTransform[0];
115 gdouble xscale = sqrt(c * c + s * s);
116 return xscale;
117 }
119 static NR::Point sp_pattern_extract_trans(SPPattern const *pat)
120 {
121 return NR::Point(pat->patternTransform[4], pat->patternTransform[5]);
122 }
124 static void
125 sp_pattern_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
126 {
127 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
129 NR::Point p_snapped = p;
131 if ( state & GDK_CONTROL_MASK ) {
132 if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
133 p_snapped[NR::Y] = origin[NR::Y];
134 } else {
135 p_snapped[NR::X] = origin[NR::X];
136 }
137 }
139 if (state) {
140 NR::Point const q = p_snapped - sp_pattern_extract_trans(pat);
141 sp_item_adjust_pattern(item, NR::Matrix(NR::translate(q)));
142 }
144 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
145 }
148 static NR::Point sp_pattern_xy_get(SPItem *item)
149 {
150 SPPattern const *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
151 return sp_pattern_extract_trans(pat);
152 }
154 static NR::Point sp_pattern_angle_get(SPItem *item)
155 {
156 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
158 gdouble x = (pattern_width(pat)*0.5);
159 gdouble y = 0;
160 NR::Point delta = NR::Point(x,y);
161 gdouble scale = sp_pattern_extract_scale(pat);
162 gdouble theta = sp_pattern_extract_theta(pat, scale);
163 delta = delta * NR::Matrix(NR::rotate(theta))*NR::Matrix(NR::scale(scale,scale));
164 delta = delta + sp_pattern_extract_trans(pat);
165 return delta;
166 }
168 static void
169 sp_pattern_angle_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
170 {
171 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
173 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
175 // get the angle from pattern 0,0 to the cursor pos
176 NR::Point delta = p - sp_pattern_extract_trans(pat);
177 gdouble theta = atan2(delta);
179 if ( state & GDK_CONTROL_MASK ) {
180 theta = sp_round(theta, M_PI/snaps);
181 }
183 // get the scale from the current transform so we can keep it.
184 gdouble scl = sp_pattern_extract_scale(pat);
185 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
186 NR::Point const t = sp_pattern_extract_trans(pat);
187 rot[4] = t[NR::X];
188 rot[5] = t[NR::Y];
189 sp_item_adjust_pattern(item, rot, true);
190 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
191 }
193 static void
194 sp_pattern_scale_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/)
195 {
196 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
198 // Get the scale from the position of the knotholder,
199 NR::Point d = p - sp_pattern_extract_trans(pat);
200 gdouble s = NR::L2(d);
201 gdouble pat_x = pattern_width(pat) * 0.5;
202 gdouble pat_y = pattern_height(pat) * 0.5;
203 gdouble pat_h = hypot(pat_x, pat_y);
204 gdouble scl = s / pat_h;
206 // get angle from current transform, (need get current scale first to calculate angle)
207 gdouble oldscale = sp_pattern_extract_scale(pat);
208 gdouble theta = sp_pattern_extract_theta(pat,oldscale);
210 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
211 NR::Point const t = sp_pattern_extract_trans(pat);
212 rot[4] = t[NR::X];
213 rot[5] = t[NR::Y];
214 sp_item_adjust_pattern(item, rot, true);
215 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
216 }
219 static NR::Point sp_pattern_scale_get(SPItem *item)
220 {
221 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
223 gdouble x = pattern_width(pat)*0.5;
224 gdouble y = pattern_height(pat)*0.5;
225 NR::Point delta = NR::Point(x,y);
226 NR::Matrix a = pat->patternTransform;
227 a[4] = 0;
228 a[5] = 0;
229 delta = delta * a;
230 delta = delta + sp_pattern_extract_trans(pat);
231 return delta;
232 }
234 /* SPRect */
236 static NR::Point snap_knot_position(SPItem *item, NR::Point const &p)
237 {
238 SPDesktop const *desktop = inkscape_active_desktop();
239 NR::Matrix const i2d (sp_item_i2d_affine (item));
240 NR::Point s = p * i2d;
241 SnapManager &m = desktop->namedview->snap_manager;
242 m.setup(desktop, item);
243 m.freeSnapReturnByRef(Inkscape::Snapper::SNAPPOINT_NODE, s);
244 return s * i2d.inverse();
245 }
247 static NR::Point sp_rect_rx_get(SPItem *item)
248 {
249 SPRect *rect = SP_RECT(item);
251 return NR::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed);
252 }
254 static void sp_rect_rx_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
255 {
256 SPRect *rect = SP_RECT(item);
258 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
259 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
260 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
262 if (state & GDK_CONTROL_MASK) {
263 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
264 rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, temp);
265 rect->rx._set = rect->ry._set = true;
267 } else {
268 rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, rect->width.computed / 2.0);
269 rect->rx._set = true;
270 }
272 ((SPObject*)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
273 }
276 static NR::Point sp_rect_ry_get(SPItem *item)
277 {
278 SPRect *rect = SP_RECT(item);
280 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed);
281 }
283 static void sp_rect_ry_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
284 {
285 SPRect *rect = SP_RECT(item);
287 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
288 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
289 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
291 if (state & GDK_CONTROL_MASK) {
292 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
293 rect->rx.computed = rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed, 0.0, temp);
294 rect->ry._set = rect->rx._set = true;
295 } else {
296 if (!rect->rx._set || rect->rx.computed == 0) {
297 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
298 0.0,
299 MIN(rect->height.computed / 2.0, rect->width.computed / 2.0));
300 } else {
301 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
302 0.0,
303 rect->height.computed / 2.0);
304 }
306 rect->ry._set = true;
307 }
309 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
310 }
312 /**
313 * Remove rounding from a rectangle.
314 */
315 static void rect_remove_rounding(SPRect *rect)
316 {
317 SP_OBJECT_REPR(rect)->setAttribute("rx", NULL);
318 SP_OBJECT_REPR(rect)->setAttribute("ry", NULL);
319 }
321 /**
322 * Called when the horizontal rounding radius knot is clicked.
323 */
324 static void sp_rect_rx_knot_click(SPItem *item, guint state)
325 {
326 SPRect *rect = SP_RECT(item);
328 if (state & GDK_SHIFT_MASK) {
329 rect_remove_rounding(rect);
330 } else if (state & GDK_CONTROL_MASK) {
331 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
332 SP_OBJECT_REPR(rect)->setAttribute("ry", SP_OBJECT_REPR(rect)->attribute("rx"));
333 }
334 }
336 /**
337 * Called when the vertical rounding radius knot is clicked.
338 */
339 static void sp_rect_ry_knot_click(SPItem *item, guint state)
340 {
341 SPRect *rect = SP_RECT(item);
343 if (state & GDK_SHIFT_MASK) {
344 rect_remove_rounding(rect);
345 } else if (state & GDK_CONTROL_MASK) {
346 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
347 SP_OBJECT_REPR(rect)->setAttribute("rx", SP_OBJECT_REPR(rect)->attribute("ry"));
348 }
349 }
351 #define SGN(x) ((x)>0?1:((x)<0?-1:0))
353 static void sp_rect_clamp_radii(SPRect *rect)
354 {
355 // clamp rounding radii so that they do not exceed width/height
356 if (2 * rect->rx.computed > rect->width.computed) {
357 rect->rx.computed = 0.5 * rect->width.computed;
358 rect->rx._set = true;
359 }
360 if (2 * rect->ry.computed > rect->height.computed) {
361 rect->ry.computed = 0.5 * rect->height.computed;
362 rect->ry._set = true;
363 }
364 }
366 static NR::Point sp_rect_wh_get(SPItem *item)
367 {
368 SPRect *rect = SP_RECT(item);
370 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
371 }
373 static void sp_rect_wh_set_internal(SPRect *rect, NR::Point const &p, NR::Point const &origin, guint state)
374 {
375 NR::Point const s = snap_knot_position(rect, p);
377 if (state & GDK_CONTROL_MASK) {
378 // original width/height when drag started
379 gdouble const w_orig = (origin[NR::X] - rect->x.computed);
380 gdouble const h_orig = (origin[NR::Y] - rect->y.computed);
382 //original ratio
383 gdouble const ratio = (w_orig / h_orig);
385 // mouse displacement since drag started
386 gdouble const minx = s[NR::X] - origin[NR::X];
387 gdouble const miny = s[NR::Y] - origin[NR::Y];
389 if (fabs(minx) > fabs(miny)) {
391 // snap to horizontal or diagonal
392 rect->width.computed = MAX(w_orig + minx, 0);
393 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
394 // closer to the diagonal and in same-sign quarters, change both using ratio
395 rect->height.computed = MAX(h_orig + minx / ratio, 0);
396 } else {
397 // closer to the horizontal, change only width, height is h_orig
398 rect->height.computed = MAX(h_orig, 0);
399 }
401 } else {
402 // snap to vertical or diagonal
403 rect->height.computed = MAX(h_orig + miny, 0);
404 if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) {
405 // closer to the diagonal and in same-sign quarters, change both using ratio
406 rect->width.computed = MAX(w_orig + miny * ratio, 0);
407 } else {
408 // closer to the vertical, change only height, width is w_orig
409 rect->width.computed = MAX(w_orig, 0);
410 }
411 }
413 rect->width._set = rect->height._set = true;
415 } else {
416 // move freely
417 rect->width.computed = MAX(s[NR::X] - rect->x.computed, 0);
418 rect->height.computed = MAX(s[NR::Y] - rect->y.computed, 0);
419 rect->width._set = rect->height._set = true;
420 }
422 sp_rect_clamp_radii(rect);
424 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
425 }
427 static void sp_rect_wh_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
428 {
429 SPRect *rect = SP_RECT(item);
431 sp_rect_wh_set_internal(rect, p, origin, state);
432 }
434 static NR::Point sp_rect_xy_get(SPItem *item)
435 {
436 SPRect *rect = SP_RECT(item);
438 return NR::Point(rect->x.computed, rect->y.computed);
439 }
441 static void sp_rect_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
442 {
443 SPRect *rect = SP_RECT(item);
445 // opposite corner (unmoved)
446 gdouble opposite_x = (rect->x.computed + rect->width.computed);
447 gdouble opposite_y = (rect->y.computed + rect->height.computed);
449 // original width/height when drag started
450 gdouble w_orig = opposite_x - origin[NR::X];
451 gdouble h_orig = opposite_y - origin[NR::Y];
453 NR::Point const s = snap_knot_position(rect, p);
455 // mouse displacement since drag started
456 gdouble minx = s[NR::X] - origin[NR::X];
457 gdouble miny = s[NR::Y] - origin[NR::Y];
459 if (state & GDK_CONTROL_MASK) {
460 //original ratio
461 gdouble ratio = (w_orig / h_orig);
463 if (fabs(minx) > fabs(miny)) {
465 // snap to horizontal or diagonal
466 rect->x.computed = MIN(s[NR::X], opposite_x);
467 rect->width.computed = MAX(w_orig - minx, 0);
468 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
469 // closer to the diagonal and in same-sign quarters, change both using ratio
470 rect->y.computed = MIN(origin[NR::Y] + minx / ratio, opposite_y);
471 rect->height.computed = MAX(h_orig - minx / ratio, 0);
472 } else {
473 // closer to the horizontal, change only width, height is h_orig
474 rect->y.computed = MIN(origin[NR::Y], opposite_y);
475 rect->height.computed = MAX(h_orig, 0);
476 }
478 } else {
480 // snap to vertical or diagonal
481 rect->y.computed = MIN(s[NR::Y], opposite_y);
482 rect->height.computed = MAX(h_orig - miny, 0);
483 if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
484 // closer to the diagonal and in same-sign quarters, change both using ratio
485 rect->x.computed = MIN(origin[NR::X] + miny * ratio, opposite_x);
486 rect->width.computed = MAX(w_orig - miny * ratio, 0);
487 } else {
488 // closer to the vertical, change only height, width is w_orig
489 rect->x.computed = MIN(origin[NR::X], opposite_x);
490 rect->width.computed = MAX(w_orig, 0);
491 }
493 }
495 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
497 } else {
498 // move freely
499 rect->x.computed = MIN(s[NR::X], opposite_x);
500 rect->width.computed = MAX(w_orig - minx, 0);
501 rect->y.computed = MIN(s[NR::Y], opposite_y);
502 rect->height.computed = MAX(h_orig - miny, 0);
503 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
504 }
506 sp_rect_clamp_radii(rect);
508 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
509 }
511 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop)
512 {
513 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
515 sp_knot_holder_add_full(
516 knot_holder, sp_rect_rx_set, sp_rect_rx_get, sp_rect_rx_knot_click,
517 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
518 _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> to make the vertical "
519 "radius the same"));
521 sp_knot_holder_add_full(
522 knot_holder, sp_rect_ry_set, sp_rect_ry_get, sp_rect_ry_knot_click,
523 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
524 _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> to make the horizontal "
525 "radius the same")
526 );
528 sp_knot_holder_add_full(
529 knot_holder, sp_rect_wh_set, sp_rect_wh_get, NULL,
530 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
531 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
532 "or stretch in one dimension only")
533 );
535 sp_knot_holder_add_full(
536 knot_holder, sp_rect_xy_set, sp_rect_xy_get, NULL,
537 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
538 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
539 "or stretch in one dimension only")
540 );
542 sp_pat_knot_holder(item, knot_holder);
543 return knot_holder;
544 }
546 /* Box3D (= the new 3D box structure) */
548 static NR::Point box3d_knot_get(SPItem *item, guint knot_id)
549 {
550 return box3d_get_corner_screen(SP_BOX3D(item), knot_id);
551 }
553 static void box3d_knot_set(SPItem *item, guint knot_id, NR::Point const &new_pos, NR::Point const &/*origin*/, guint state)
554 {
555 NR::Point const s = snap_knot_position(item, new_pos);
557 g_assert(item != NULL);
558 SPBox3D *box = SP_BOX3D(item);
559 NR::Matrix const i2d (sp_item_i2d_affine (item));
561 Box3D::Axis movement;
562 if ((knot_id < 4) != (state & GDK_SHIFT_MASK)) {
563 movement = Box3D::XY;
564 } else {
565 movement = Box3D::Z;
566 }
568 box3d_set_corner (box, knot_id, s * i2d, movement, (state & GDK_CONTROL_MASK));
569 box3d_set_z_orders(box);
570 box3d_position_set(box);
571 }
573 static NR::Point box3d_knot_center_get (SPItem *item)
574 {
575 return box3d_get_center_screen (SP_BOX3D(item));
576 }
578 static void box3d_knot_center_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
579 {
580 NR::Point const s = snap_knot_position(item, new_pos);
582 SPBox3D *box = SP_BOX3D(item);
583 NR::Matrix const i2d (sp_item_i2d_affine (item));
585 box3d_set_center (SP_BOX3D(item), s * i2d, origin * i2d, !(state & GDK_SHIFT_MASK) ? Box3D::XY : Box3D::Z,
586 state & GDK_CONTROL_MASK);
588 box3d_set_z_orders(box);
589 box3d_position_set(box);
590 }
592 static void box3d_knot0_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
593 {
594 box3d_knot_set(item, 0, new_pos, origin, state);
595 }
597 static void box3d_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
598 {
599 box3d_knot_set(item, 1, new_pos, origin, state);
600 }
602 static void box3d_knot2_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
603 {
604 box3d_knot_set(item, 2, new_pos, origin, state);
605 }
607 static void box3d_knot3_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
608 {
609 box3d_knot_set(item, 3, new_pos, origin, state);
610 }
612 static void box3d_knot4_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
613 {
614 box3d_knot_set(item, 4, new_pos, origin, state);
615 }
617 static void box3d_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
618 {
619 box3d_knot_set(item, 5, new_pos, origin, state);
620 }
622 static void box3d_knot6_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
623 {
624 box3d_knot_set(item, 6, new_pos, origin, state);
625 }
627 static void box3d_knot7_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
628 {
629 box3d_knot_set(item, 7, new_pos, origin, state);
630 }
632 static NR::Point box3d_knot0_get(SPItem *item)
633 {
634 return box3d_knot_get(item, 0);
635 }
637 static NR::Point box3d_knot1_get(SPItem *item)
638 {
639 return box3d_knot_get(item, 1);
640 }
642 static NR::Point box3d_knot2_get(SPItem *item)
643 {
644 return box3d_knot_get(item, 2);
645 }
647 static NR::Point box3d_knot3_get(SPItem *item)
648 {
649 return box3d_knot_get(item, 3);
650 }
652 static NR::Point box3d_knot4_get(SPItem *item)
653 {
654 return box3d_knot_get(item, 4);
655 }
657 static NR::Point box3d_knot5_get(SPItem *item)
658 {
659 return box3d_knot_get(item, 5);
660 }
662 static NR::Point box3d_knot6_get(SPItem *item)
663 {
664 return box3d_knot_get(item, 6);
665 }
667 static NR::Point box3d_knot7_get(SPItem *item)
668 {
669 return box3d_knot_get(item, 7);
670 }
672 SPKnotHolder *
673 box3d_knot_holder(SPItem *item, SPDesktop *desktop)
674 {
675 g_assert(item != NULL);
676 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
678 sp_knot_holder_add(knot_holder, box3d_knot0_set, box3d_knot0_get, NULL,
679 _("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"));
680 sp_knot_holder_add(knot_holder, box3d_knot1_set, box3d_knot1_get, NULL,
681 _("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"));
682 sp_knot_holder_add(knot_holder, box3d_knot2_set, box3d_knot2_get, NULL,
683 _("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"));
684 sp_knot_holder_add(knot_holder, box3d_knot3_set, box3d_knot3_get, NULL,
685 _("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"));
686 sp_knot_holder_add(knot_holder, box3d_knot4_set, box3d_knot4_get, NULL,
687 _("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"));
688 sp_knot_holder_add(knot_holder, box3d_knot5_set, box3d_knot5_get, NULL,
689 _("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"));
690 sp_knot_holder_add(knot_holder, box3d_knot6_set, box3d_knot6_get, NULL,
691 _("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"));
692 sp_knot_holder_add(knot_holder, box3d_knot7_set, box3d_knot7_get, NULL,
693 _("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"));
695 // center dragging
696 sp_knot_holder_add_full(knot_holder, box3d_knot_center_set, box3d_knot_center_get, NULL,
697 SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,_("Move the box in perspective"));
699 sp_pat_knot_holder(item, knot_holder);
701 return knot_holder;
702 }
706 /* SPArc */
708 /*
709 * return values:
710 * 1 : inside
711 * 0 : on the curves
712 * -1 : outside
713 */
714 static gint
715 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
716 {
717 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
718 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
720 gdouble s = dx * dx + dy * dy;
721 if (s < 1.0) return 1;
722 if (s > 1.0) return -1;
723 return 0;
724 }
726 static void
727 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
728 {
729 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
731 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
732 SPArc *arc = SP_ARC(item);
734 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
736 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
737 NR::scale sc(ge->rx.computed, ge->ry.computed);
738 ge->start = atan2(delta * sc.inverse());
739 if ( ( state & GDK_CONTROL_MASK )
740 && snaps )
741 {
742 ge->start = sp_round(ge->start, M_PI/snaps);
743 }
744 sp_genericellipse_normalize(ge);
745 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
746 }
748 static NR::Point sp_arc_start_get(SPItem *item)
749 {
750 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
751 SPArc *arc = SP_ARC(item);
753 return sp_arc_get_xy(arc, ge->start);
754 }
756 static void
757 sp_arc_end_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->end = atan2(delta * sc.inverse());
769 if ( ( state & GDK_CONTROL_MASK )
770 && snaps )
771 {
772 ge->end = sp_round(ge->end, M_PI/snaps);
773 }
774 sp_genericellipse_normalize(ge);
775 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
776 }
778 static NR::Point sp_arc_end_get(SPItem *item)
779 {
780 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
781 SPArc *arc = SP_ARC(item);
783 return sp_arc_get_xy(arc, ge->end);
784 }
786 static void
787 sp_arc_startend_click(SPItem *item, guint state)
788 {
789 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
791 if (state & GDK_SHIFT_MASK) {
792 ge->end = ge->start = 0;
793 ((SPObject *)ge)->updateRepr();
794 }
795 }
798 static void
799 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
800 {
801 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
802 SPArc *arc = SP_ARC(item);
804 NR::Point const s = snap_knot_position(arc, p);
806 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
808 if ( state & GDK_CONTROL_MASK ) {
809 ge->ry.computed = ge->rx.computed;
810 }
812 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
813 }
815 static NR::Point sp_arc_rx_get(SPItem *item)
816 {
817 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
819 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
820 }
822 static void
823 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
824 {
825 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
826 SPArc *arc = SP_ARC(item);
828 NR::Point const s = snap_knot_position(arc, p);
830 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
832 if ( state & GDK_CONTROL_MASK ) {
833 ge->rx.computed = ge->ry.computed;
834 }
836 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
837 }
839 static NR::Point sp_arc_ry_get(SPItem *item)
840 {
841 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
843 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
844 }
846 static void
847 sp_arc_rx_click(SPItem *item, guint state)
848 {
849 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
851 if (state & GDK_CONTROL_MASK) {
852 ge->ry.computed = ge->rx.computed;
853 ((SPObject *)ge)->updateRepr();
854 }
855 }
857 static void
858 sp_arc_ry_click(SPItem *item, guint state)
859 {
860 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
862 if (state & GDK_CONTROL_MASK) {
863 ge->rx.computed = ge->ry.computed;
864 ((SPObject *)ge)->updateRepr();
865 }
866 }
868 static SPKnotHolder *
869 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
870 {
871 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
873 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
874 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
875 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
876 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
877 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
878 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
879 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
880 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
881 _("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"));
882 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
883 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
884 _("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"));
886 sp_pat_knot_holder(item, knot_holder);
888 return knot_holder;
889 }
891 /* SPStar */
893 static void
894 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
895 {
896 SPStar *star = SP_STAR(item);
898 NR::Point const s = snap_knot_position(star, p);
900 NR::Point d = s - star->center;
902 double arg1 = atan2(d);
903 double darg1 = arg1 - star->arg[0];
905 if (state & GDK_MOD1_MASK) {
906 star->randomized = darg1/(star->arg[0] - star->arg[1]);
907 } else if (state & GDK_SHIFT_MASK) {
908 star->rounded = darg1/(star->arg[0] - star->arg[1]);
909 } else if (state & GDK_CONTROL_MASK) {
910 star->r[0] = L2(d);
911 } else {
912 star->r[0] = L2(d);
913 star->arg[0] = arg1;
914 star->arg[1] += darg1;
915 }
916 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
917 }
919 static void
920 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
921 {
922 SPStar *star = SP_STAR(item);
924 NR::Point const s = snap_knot_position(star, p);
926 if (star->flatsided == false) {
927 NR::Point d = s - star->center;
929 double arg1 = atan2(d);
930 double darg1 = arg1 - star->arg[1];
932 if (state & GDK_MOD1_MASK) {
933 star->randomized = darg1/(star->arg[0] - star->arg[1]);
934 } else if (state & GDK_SHIFT_MASK) {
935 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
936 } else if (state & GDK_CONTROL_MASK) {
937 star->r[1] = L2(d);
938 star->arg[1] = star->arg[0] + M_PI / star->sides;
939 }
940 else {
941 star->r[1] = L2(d);
942 star->arg[1] = atan2(d);
943 }
944 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
945 }
946 }
948 static NR::Point sp_star_knot1_get(SPItem *item)
949 {
950 g_assert(item != NULL);
952 SPStar *star = SP_STAR(item);
954 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
956 }
958 static NR::Point sp_star_knot2_get(SPItem *item)
959 {
960 g_assert(item != NULL);
962 SPStar *star = SP_STAR(item);
964 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
965 }
967 static void
968 sp_star_knot_click(SPItem *item, guint state)
969 {
970 SPStar *star = SP_STAR(item);
972 if (state & GDK_MOD1_MASK) {
973 star->randomized = 0;
974 ((SPObject *)star)->updateRepr();
975 } else if (state & GDK_SHIFT_MASK) {
976 star->rounded = 0;
977 ((SPObject *)star)->updateRepr();
978 } else if (state & GDK_CONTROL_MASK) {
979 star->arg[1] = star->arg[0] + M_PI / star->sides;
980 ((SPObject *)star)->updateRepr();
981 }
982 }
984 static SPKnotHolder *
985 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
986 {
987 /* we don't need to get parent knot_holder */
988 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
989 g_assert(item != NULL);
991 SPStar *star = SP_STAR(item);
993 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
994 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
995 if (star->flatsided == false)
996 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
997 _("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"));
999 sp_pat_knot_holder(item, knot_holder);
1001 return knot_holder;
1002 }
1004 /* SPSpiral */
1006 /*
1007 * set attributes via inner (t=t0) knot point:
1008 * [default] increase/decrease inner point
1009 * [shift] increase/decrease inner and outer arg synchronizely
1010 * [control] constrain inner arg to round per PI/4
1011 */
1012 static void
1013 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1014 {
1015 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1017 SPSpiral *spiral = SP_SPIRAL(item);
1019 gdouble dx = p[NR::X] - spiral->cx;
1020 gdouble dy = p[NR::Y] - spiral->cy;
1022 if (state & GDK_MOD1_MASK) {
1023 // adjust divergence by vertical drag, relative to rad
1024 double new_exp = (spiral->rad + dy)/(spiral->rad);
1025 spiral->exp = new_exp > 0? new_exp : 0;
1026 } else {
1027 // roll/unroll from inside
1028 gdouble arg_t0;
1029 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
1031 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
1032 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
1033 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
1035 /* round inner arg per PI/snaps, if CTRL is pressed */
1036 if ( ( state & GDK_CONTROL_MASK )
1037 && ( fabs(spiral->revo) > SP_EPSILON_2 )
1038 && ( snaps != 0 ) ) {
1039 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
1040 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
1041 }
1043 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1044 }
1046 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1047 }
1049 /*
1050 * set attributes via outer (t=1) knot point:
1051 * [default] increase/decrease revolution factor
1052 * [control] constrain inner arg to round per PI/4
1053 */
1054 static void
1055 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint state)
1056 {
1057 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
1059 SPSpiral *spiral = SP_SPIRAL(item);
1061 gdouble dx = p[NR::X] - spiral->cx;
1062 gdouble dy = p[NR::Y] - spiral->cy;
1064 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
1065 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
1066 if (!(state & GDK_MOD1_MASK)) {
1067 // if alt not pressed, change also rad; otherwise it is locked
1068 spiral->rad = MAX(hypot(dx, dy), 0.001);
1069 }
1070 if ( ( state & GDK_CONTROL_MASK )
1071 && snaps ) {
1072 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
1073 }
1074 } else { // roll/unroll
1075 // arg of the spiral outer end
1076 double arg_1;
1077 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
1079 // its fractional part after the whole turns are subtracted
1080 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
1082 // arg of the mouse point relative to spiral center
1083 double mouse_angle = atan2(dy, dx);
1084 if (mouse_angle < 0)
1085 mouse_angle += 2*M_PI;
1087 // snap if ctrl
1088 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
1089 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
1090 }
1092 // by how much we want to rotate the outer point
1093 double diff = mouse_angle - arg_r;
1094 if (diff > M_PI)
1095 diff -= 2*M_PI;
1096 else if (diff < -M_PI)
1097 diff += 2*M_PI;
1099 // calculate the new rad;
1100 // the value of t corresponding to the angle arg_1 + diff:
1101 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1102 // the rad at that t:
1103 double rad_new = 0;
1104 if (t_temp > spiral->t0)
1105 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1107 // change the revo (converting diff from radians to the number of turns)
1108 spiral->revo += diff/(2*M_PI);
1109 if (spiral->revo < 1e-3)
1110 spiral->revo = 1e-3;
1112 // if alt not pressed and the values are sane, change the rad
1113 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1114 // adjust t0 too so that the inner point stays unmoved
1115 double r0;
1116 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1117 spiral->rad = rad_new;
1118 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1119 }
1120 if (!IS_FINITE(spiral->t0)) spiral->t0 = 0.0;
1121 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1122 }
1124 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1125 }
1127 static NR::Point sp_spiral_inner_get(SPItem *item)
1128 {
1129 SPSpiral *spiral = SP_SPIRAL(item);
1131 return sp_spiral_get_xy(spiral, spiral->t0);
1132 }
1134 static NR::Point sp_spiral_outer_get(SPItem *item)
1135 {
1136 SPSpiral *spiral = SP_SPIRAL(item);
1138 return sp_spiral_get_xy(spiral, 1.0);
1139 }
1141 static void
1142 sp_spiral_inner_click(SPItem *item, guint state)
1143 {
1144 SPSpiral *spiral = SP_SPIRAL(item);
1146 if (state & GDK_MOD1_MASK) {
1147 spiral->exp = 1;
1148 ((SPObject *)spiral)->updateRepr();
1149 } else if (state & GDK_SHIFT_MASK) {
1150 spiral->t0 = 0;
1151 ((SPObject *)spiral)->updateRepr();
1152 }
1153 }
1155 static SPKnotHolder *
1156 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1157 {
1158 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1160 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1161 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1162 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1163 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1165 sp_pat_knot_holder(item, knot_holder);
1167 return knot_holder;
1168 }
1170 /* SPOffset */
1172 static void
1173 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/)
1174 {
1175 SPOffset *offset = SP_OFFSET(item);
1177 offset->rad = sp_offset_distance_to_original(offset, p);
1178 offset->knot = p;
1179 offset->knotSet = true;
1181 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1182 }
1185 static NR::Point sp_offset_offset_get(SPItem *item)
1186 {
1187 SPOffset *offset = SP_OFFSET(item);
1189 NR::Point np;
1190 sp_offset_top_point(offset,&np);
1191 return np;
1192 }
1194 static SPKnotHolder *
1195 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1196 {
1197 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1199 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1200 _("Adjust the <b>offset distance</b>"));
1202 sp_pat_knot_holder(item, knot_holder);
1204 return knot_holder;
1205 }
1207 static SPKnotHolder *
1208 sp_misc_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1209 {
1210 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1211 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1212 {
1213 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1215 sp_pat_knot_holder(item, knot_holder);
1217 return knot_holder;
1218 }
1219 return NULL;
1220 }
1222 static void
1223 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1224 {
1225 if ((SP_OBJECT(item)->style->fill.isPaintserver())
1226 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1227 {
1228 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1229 // TRANSLATORS: This refers to the pattern that's inside the object
1230 _("<b>Move</b> the pattern fill inside the object"));
1231 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1232 _("<b>Scale</b> the pattern fill uniformly"));
1233 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1234 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1235 }
1236 }
1238 static NR::Point sp_flowtext_corner_get(SPItem *item)
1239 {
1240 SPRect *rect = SP_RECT(item);
1242 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1243 }
1245 static void
1246 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1247 {
1248 SPRect *rect = SP_RECT(item);
1250 sp_rect_wh_set_internal(rect, p, origin, state);
1251 }
1253 static SPKnotHolder *
1254 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1255 {
1256 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1258 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1259 _("Drag to resize the <b>flowed text frame</b>"));
1261 return knot_holder;
1262 }
1265 /*
1266 Local Variables:
1267 mode:c++
1268 c-file-style:"stroustrup"
1269 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1270 indent-tabs-mode:nil
1271 fill-column:99
1272 End:
1273 */
1274 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :