684c4404f3bd51193682885d34f158ea78d64690
1 #define __SP_OBJECT_EDIT_C__
3 /*
4 * Node editing extension to objects
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * Mitsuru Oka
9 *
10 * Licensed under GNU GPL
11 */
13 #ifdef HAVE_CONFIG_H
14 # include "config.h"
15 #endif
19 #include "sp-item.h"
20 #include "sp-rect.h"
21 #include "box3d.h"
22 #include "sp-ellipse.h"
23 #include "sp-star.h"
24 #include "sp-spiral.h"
25 #include "sp-offset.h"
26 #include "sp-flowtext.h"
27 #include "prefs-utils.h"
28 #include "inkscape.h"
29 #include "snap.h"
30 #include "desktop-affine.h"
31 #include <style.h>
32 #include "desktop.h"
33 #include "sp-namedview.h"
35 #include "sp-pattern.h"
36 #include "sp-path.h"
38 #include <glibmm/i18n.h>
40 #include "object-edit.h"
42 #include <libnr/nr-scale-ops.h>
45 #include "xml/repr.h"
47 #include "isnan.h"
49 #define sp_round(v,m) (((v) < 0.0) ? ((ceil((v) / (m) - 0.5)) * (m)) : ((floor((v) / (m) + 0.5)) * (m)))
51 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop);
52 static SPKnotHolder *sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop);
53 static SPKnotHolder *sp_arc_knot_holder(SPItem *item, SPDesktop *desktop);
54 static SPKnotHolder *sp_star_knot_holder(SPItem *item, SPDesktop *desktop);
55 static SPKnotHolder *sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop);
56 static SPKnotHolder *sp_offset_knot_holder(SPItem *item, SPDesktop *desktop);
57 static SPKnotHolder *sp_path_knot_holder(SPItem *item, SPDesktop *desktop);
58 static SPKnotHolder *sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop);
59 static void sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder);
61 SPKnotHolder *
62 sp_item_knot_holder(SPItem *item, SPDesktop *desktop)
63 {
64 if (SP_IS_RECT(item)) {
65 return sp_rect_knot_holder(item, desktop);
66 } else if (SP_IS_3DBOX(item)) {
67 return sp_3dbox_knot_holder(item, desktop);
68 } else if (SP_IS_ARC(item)) {
69 return sp_arc_knot_holder(item, desktop);
70 } else if (SP_IS_STAR(item)) {
71 return sp_star_knot_holder(item, desktop);
72 } else if (SP_IS_SPIRAL(item)) {
73 return sp_spiral_knot_holder(item, desktop);
74 } else if (SP_IS_OFFSET(item)) {
75 return sp_offset_knot_holder(item, desktop);
76 } else if (SP_IS_PATH(item)) {
77 return sp_path_knot_holder(item, desktop);
78 } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) {
79 return sp_flowtext_knot_holder(item, desktop);
80 }
82 return NULL;
83 }
86 /* Pattern manipulation */
88 static gdouble sp_pattern_extract_theta(SPPattern *pat, gdouble scale)
89 {
90 gdouble theta = asin(pat->patternTransform[1] / scale);
91 if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
92 return theta;
93 }
95 static gdouble sp_pattern_extract_scale(SPPattern *pat)
96 {
97 gdouble s = pat->patternTransform[1];
98 gdouble c = pat->patternTransform[0];
99 gdouble xscale = sqrt(c * c + s * s);
100 return xscale;
101 }
103 static NR::Point sp_pattern_extract_trans(SPPattern const *pat)
104 {
105 return NR::Point(pat->patternTransform[4], pat->patternTransform[5]);
106 }
108 static void
109 sp_pattern_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
110 {
111 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
113 NR::Point p_snapped = p;
115 if ( state & GDK_CONTROL_MASK ) {
116 if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
117 p_snapped[NR::Y] = origin[NR::Y];
118 } else {
119 p_snapped[NR::X] = origin[NR::X];
120 }
121 }
123 if (state) {
124 NR::Point const q = p_snapped - sp_pattern_extract_trans(pat);
125 sp_item_adjust_pattern(item, NR::Matrix(NR::translate(q)));
126 }
128 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
129 }
132 static NR::Point sp_pattern_xy_get(SPItem *item)
133 {
134 SPPattern const *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
135 return sp_pattern_extract_trans(pat);
136 }
138 static NR::Point sp_pattern_angle_get(SPItem *item)
139 {
140 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
142 gdouble x = (pattern_width(pat)*0.5);
143 gdouble y = 0;
144 NR::Point delta = NR::Point(x,y);
145 gdouble scale = sp_pattern_extract_scale(pat);
146 gdouble theta = sp_pattern_extract_theta(pat, scale);
147 delta = delta * NR::Matrix(NR::rotate(theta))*NR::Matrix(NR::scale(scale,scale));
148 delta = delta + sp_pattern_extract_trans(pat);
149 return delta;
150 }
152 static void
153 sp_pattern_angle_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
154 {
155 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
157 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
159 // get the angle from pattern 0,0 to the cursor pos
160 NR::Point delta = p - sp_pattern_extract_trans(pat);
161 gdouble theta = atan2(delta);
163 if ( state & GDK_CONTROL_MASK ) {
164 theta = sp_round(theta, M_PI/snaps);
165 }
167 // get the scale from the current transform so we can keep it.
168 gdouble scl = sp_pattern_extract_scale(pat);
169 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
170 NR::Point const t = sp_pattern_extract_trans(pat);
171 rot[4] = t[NR::X];
172 rot[5] = t[NR::Y];
173 sp_item_adjust_pattern(item, rot, true);
174 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
175 }
177 static void
178 sp_pattern_scale_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
179 {
180 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
182 // Get the scale from the position of the knotholder,
183 NR::Point d = p - sp_pattern_extract_trans(pat);
184 gdouble s = NR::L2(d);
185 gdouble pat_x = pattern_width(pat) * 0.5;
186 gdouble pat_y = pattern_height(pat) * 0.5;
187 gdouble pat_h = hypot(pat_x, pat_y);
188 gdouble scl = s / pat_h;
190 // get angle from current transform, (need get current scale first to calculate angle)
191 gdouble oldscale = sp_pattern_extract_scale(pat);
192 gdouble theta = sp_pattern_extract_theta(pat,oldscale);
194 NR::Matrix rot = NR::Matrix(NR::rotate(theta)) * NR::Matrix(NR::scale(scl,scl));
195 NR::Point const t = sp_pattern_extract_trans(pat);
196 rot[4] = t[NR::X];
197 rot[5] = t[NR::Y];
198 sp_item_adjust_pattern(item, rot, true);
199 item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
200 }
203 static NR::Point sp_pattern_scale_get(SPItem *item)
204 {
205 SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
207 gdouble x = pattern_width(pat)*0.5;
208 gdouble y = pattern_height(pat)*0.5;
209 NR::Point delta = NR::Point(x,y);
210 NR::Matrix a = pat->patternTransform;
211 a[4] = 0;
212 a[5] = 0;
213 delta = delta * a;
214 delta = delta + sp_pattern_extract_trans(pat);
215 return delta;
216 }
218 /* SPRect */
220 static NR::Point snap_knot_position(SPItem *item, NR::Point const &p)
221 {
222 SPDesktop const *desktop = inkscape_active_desktop();
223 NR::Matrix const i2d (sp_item_i2d_affine (item));
224 NR::Point s = p * i2d;
225 SnapManager const &m = desktop->namedview->snap_manager;
226 s = m.freeSnap(Inkscape::Snapper::BBOX_POINT | Inkscape::Snapper::SNAP_POINT, s, item).getPoint();
227 return s * i2d.inverse();
228 }
230 static NR::Point sp_rect_rx_get(SPItem *item)
231 {
232 SPRect *rect = SP_RECT(item);
234 return NR::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed);
235 }
237 static void sp_rect_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
238 {
239 SPRect *rect = SP_RECT(item);
241 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
242 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
243 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
245 if (state & GDK_CONTROL_MASK) {
246 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
247 rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, temp);
248 rect->rx._set = rect->ry._set = true;
250 } else {
251 rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - p[NR::X], 0.0, rect->width.computed / 2.0);
252 rect->rx._set = true;
253 }
255 ((SPObject*)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
256 }
259 static NR::Point sp_rect_ry_get(SPItem *item)
260 {
261 SPRect *rect = SP_RECT(item);
263 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed);
264 }
266 static void sp_rect_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
267 {
268 SPRect *rect = SP_RECT(item);
270 //In general we cannot just snap this radius to an arbitrary point, as we have only a single
271 //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap
272 //the radius then we should have a constrained snap. snap_knot_position() is unconstrained
274 if (state & GDK_CONTROL_MASK) {
275 gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0;
276 rect->rx.computed = rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed, 0.0, temp);
277 rect->ry._set = rect->rx._set = true;
278 } else {
279 if (!rect->rx._set || rect->rx.computed == 0) {
280 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
281 0.0,
282 MIN(rect->height.computed / 2.0, rect->width.computed / 2.0));
283 } else {
284 rect->ry.computed = CLAMP(p[NR::Y] - rect->y.computed,
285 0.0,
286 rect->height.computed / 2.0);
287 }
289 rect->ry._set = true;
290 }
292 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
293 }
295 /**
296 * Remove rounding from a rectangle.
297 */
298 static void rect_remove_rounding(SPRect *rect)
299 {
300 SP_OBJECT_REPR(rect)->setAttribute("rx", NULL);
301 SP_OBJECT_REPR(rect)->setAttribute("ry", NULL);
302 }
304 /**
305 * Called when the horizontal rounding radius knot is clicked.
306 */
307 static void sp_rect_rx_knot_click(SPItem *item, guint state)
308 {
309 SPRect *rect = SP_RECT(item);
311 if (state & GDK_SHIFT_MASK) {
312 rect_remove_rounding(rect);
313 } else if (state & GDK_CONTROL_MASK) {
314 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
315 SP_OBJECT_REPR(rect)->setAttribute("ry", SP_OBJECT_REPR(rect)->attribute("rx"));
316 }
317 }
319 /**
320 * Called when the vertical rounding radius knot is clicked.
321 */
322 static void sp_rect_ry_knot_click(SPItem *item, guint state)
323 {
324 SPRect *rect = SP_RECT(item);
326 if (state & GDK_SHIFT_MASK) {
327 rect_remove_rounding(rect);
328 } else if (state & GDK_CONTROL_MASK) {
329 /* Ctrl-click sets the vertical rounding to be the same as the horizontal */
330 SP_OBJECT_REPR(rect)->setAttribute("rx", SP_OBJECT_REPR(rect)->attribute("ry"));
331 }
332 }
334 #define SGN(x) ((x)>0?1:((x)<0?-1:0))
336 static void sp_rect_clamp_radii(SPRect *rect)
337 {
338 // clamp rounding radii so that they do not exceed width/height
339 if (2 * rect->rx.computed > rect->width.computed) {
340 rect->rx.computed = 0.5 * rect->width.computed;
341 rect->rx._set = true;
342 }
343 if (2 * rect->ry.computed > rect->height.computed) {
344 rect->ry.computed = 0.5 * rect->height.computed;
345 rect->ry._set = true;
346 }
347 }
349 static NR::Point sp_rect_wh_get(SPItem *item)
350 {
351 SPRect *rect = SP_RECT(item);
353 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
354 }
356 static void sp_rect_wh_set_internal(SPRect *rect, NR::Point const &p, NR::Point const &origin, guint state)
357 {
358 NR::Point const s = snap_knot_position(rect, p);
360 if (state & GDK_CONTROL_MASK) {
361 // original width/height when drag started
362 gdouble const w_orig = (origin[NR::X] - rect->x.computed);
363 gdouble const h_orig = (origin[NR::Y] - rect->y.computed);
365 //original ratio
366 gdouble const ratio = (w_orig / h_orig);
368 // mouse displacement since drag started
369 gdouble const minx = s[NR::X] - origin[NR::X];
370 gdouble const miny = s[NR::Y] - origin[NR::Y];
372 if (fabs(minx) > fabs(miny)) {
374 // snap to horizontal or diagonal
375 rect->width.computed = MAX(w_orig + minx, 0);
376 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
377 // closer to the diagonal and in same-sign quarters, change both using ratio
378 rect->height.computed = MAX(h_orig + minx / ratio, 0);
379 } else {
380 // closer to the horizontal, change only width, height is h_orig
381 rect->height.computed = MAX(h_orig, 0);
382 }
384 } else {
385 // snap to vertical or diagonal
386 rect->height.computed = MAX(h_orig + miny, 0);
387 if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) {
388 // closer to the diagonal and in same-sign quarters, change both using ratio
389 rect->width.computed = MAX(w_orig + miny * ratio, 0);
390 } else {
391 // closer to the vertical, change only height, width is w_orig
392 rect->width.computed = MAX(w_orig, 0);
393 }
394 }
396 rect->width._set = rect->height._set = true;
398 } else {
399 // move freely
400 rect->width.computed = MAX(s[NR::X] - rect->x.computed, 0);
401 rect->height.computed = MAX(s[NR::Y] - rect->y.computed, 0);
402 rect->width._set = rect->height._set = true;
403 }
405 sp_rect_clamp_radii(rect);
407 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
408 }
410 static void sp_rect_wh_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
411 {
412 SPRect *rect = SP_RECT(item);
414 sp_rect_wh_set_internal(rect, p, origin, state);
415 }
417 static NR::Point sp_rect_xy_get(SPItem *item)
418 {
419 SPRect *rect = SP_RECT(item);
421 return NR::Point(rect->x.computed, rect->y.computed);
422 }
424 static void sp_rect_xy_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
425 {
426 SPRect *rect = SP_RECT(item);
428 // opposite corner (unmoved)
429 gdouble opposite_x = (rect->x.computed + rect->width.computed);
430 gdouble opposite_y = (rect->y.computed + rect->height.computed);
432 // original width/height when drag started
433 gdouble w_orig = opposite_x - origin[NR::X];
434 gdouble h_orig = opposite_y - origin[NR::Y];
436 NR::Point const s = snap_knot_position(rect, p);
438 // mouse displacement since drag started
439 gdouble minx = s[NR::X] - origin[NR::X];
440 gdouble miny = s[NR::Y] - origin[NR::Y];
442 if (state & GDK_CONTROL_MASK) {
443 //original ratio
444 gdouble ratio = (w_orig / h_orig);
446 if (fabs(minx) > fabs(miny)) {
448 // snap to horizontal or diagonal
449 rect->x.computed = MIN(s[NR::X], opposite_x);
450 rect->width.computed = MAX(w_orig - minx, 0);
451 if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
452 // closer to the diagonal and in same-sign quarters, change both using ratio
453 rect->y.computed = MIN(origin[NR::Y] + minx / ratio, opposite_y);
454 rect->height.computed = MAX(h_orig - minx / ratio, 0);
455 } else {
456 // closer to the horizontal, change only width, height is h_orig
457 rect->y.computed = MIN(origin[NR::Y], opposite_y);
458 rect->height.computed = MAX(h_orig, 0);
459 }
461 } else {
463 // snap to vertical or diagonal
464 rect->y.computed = MIN(s[NR::Y], opposite_y);
465 rect->height.computed = MAX(h_orig - miny, 0);
466 if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
467 // closer to the diagonal and in same-sign quarters, change both using ratio
468 rect->x.computed = MIN(origin[NR::X] + miny * ratio, opposite_x);
469 rect->width.computed = MAX(w_orig - miny * ratio, 0);
470 } else {
471 // closer to the vertical, change only height, width is w_orig
472 rect->x.computed = MIN(origin[NR::X], opposite_x);
473 rect->width.computed = MAX(w_orig, 0);
474 }
476 }
478 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
480 } else {
481 // move freely
482 rect->x.computed = MIN(s[NR::X], opposite_x);
483 rect->width.computed = MAX(w_orig - minx, 0);
484 rect->y.computed = MIN(s[NR::Y], opposite_y);
485 rect->height.computed = MAX(h_orig - miny, 0);
486 rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
487 }
489 sp_rect_clamp_radii(rect);
491 ((SPObject *)rect)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
492 }
494 static SPKnotHolder *sp_rect_knot_holder(SPItem *item, SPDesktop *desktop)
495 {
496 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
498 sp_knot_holder_add_full(
499 knot_holder, sp_rect_rx_set, sp_rect_rx_get, sp_rect_rx_knot_click,
500 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
501 _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> to make the vertical "
502 "radius the same"));
504 sp_knot_holder_add_full(
505 knot_holder, sp_rect_ry_set, sp_rect_ry_get, sp_rect_ry_knot_click,
506 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
507 _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> to make the horizontal "
508 "radius the same")
509 );
511 sp_knot_holder_add_full(
512 knot_holder, sp_rect_wh_set, sp_rect_wh_get, NULL,
513 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
514 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
515 "or stretch in one dimension only")
516 );
518 sp_knot_holder_add_full(
519 knot_holder, sp_rect_xy_set, sp_rect_xy_get, NULL,
520 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
521 _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> to lock ratio "
522 "or stretch in one dimension only")
523 );
525 sp_pat_knot_holder(item, knot_holder);
526 return knot_holder;
527 }
529 /* 3D Box */
531 static void sp_3dbox_knot_set(SPItem *item, guint knot_id, Box3D::Axis direction,
532 NR::Point const &new_pos, NR::Point const &origin, guint state)
533 {
534 g_assert(item != NULL);
535 SP3DBox *box = SP_3DBOX(item);
537 // FIXME: Why must the coordinates be flipped vertically???
538 SPDocument *doc = SP_OBJECT_DOCUMENT(box);
539 gdouble height = sp_document_height(doc);
541 if (direction == Box3D::Z) {
542 sp_3dbox_move_corner_in_Z_direction (box, knot_id, NR::Point (new_pos[NR::X], height - new_pos[NR::Y]));
543 } else {
544 sp_3dbox_move_corner_in_XY_plane (box, knot_id, NR::Point (new_pos[NR::X], height - new_pos[NR::Y]));
545 }
546 sp_3dbox_update_curves (box);
547 }
549 static NR::Point sp_3dbox_knot_get(SPItem *item, guint knot_id)
550 {
551 g_assert(item != NULL);
552 SP3DBox *box = SP_3DBOX(item);
554 // FIXME: Why must the coordinates be flipped vertically???
555 SPDocument *doc = SP_OBJECT_DOCUMENT(box);
556 gdouble height = sp_document_height(doc);
558 return NR::Point(sp_3dbox_get_corner(box, knot_id)[NR::X], height - sp_3dbox_get_corner(box, knot_id)[NR::Y]);
559 }
561 static void sp_3dbox_knot1_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
562 {
563 sp_3dbox_knot_set (item, 1, Box3D::XY, new_pos, origin, state);
564 }
566 static NR::Point sp_3dbox_knot1_get(SPItem *item)
567 {
568 return sp_3dbox_knot_get(item, 1);
569 }
571 static void sp_3dbox_knot2_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
572 {
573 sp_3dbox_knot_set (item, 2, Box3D::XY, new_pos, origin, state);
574 }
576 static NR::Point sp_3dbox_knot2_get(SPItem *item)
577 {
578 return sp_3dbox_knot_get(item, 2);
579 }
581 static void sp_3dbox_knot5_set(SPItem *item, NR::Point const &new_pos, NR::Point const &origin, guint state)
582 {
583 sp_3dbox_knot_set (item, 5, Box3D::Z, new_pos, origin, state);
584 }
586 static NR::Point sp_3dbox_knot5_get(SPItem *item)
587 {
588 return sp_3dbox_knot_get(item, 5);
589 }
591 static SPKnotHolder *
592 sp_3dbox_knot_holder(SPItem *item, SPDesktop *desktop)
593 {
594 g_assert(item != NULL);
595 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
597 sp_knot_holder_add(knot_holder, sp_3dbox_knot1_set, sp_3dbox_knot1_get, NULL,_("Resize box in X/Y direction"));
598 sp_knot_holder_add(knot_holder, sp_3dbox_knot2_set, sp_3dbox_knot2_get, NULL,_("Resize box in X/Y direction"));
599 sp_knot_holder_add(knot_holder, sp_3dbox_knot5_set, sp_3dbox_knot5_get, NULL,_("Resize box in Z direction"));
600 sp_pat_knot_holder(item, knot_holder);
602 return knot_holder;
603 }
605 /* SPArc */
607 /*
608 * return values:
609 * 1 : inside
610 * 0 : on the curves
611 * -1 : outside
612 */
613 static gint
614 sp_genericellipse_side(SPGenericEllipse *ellipse, NR::Point const &p)
615 {
616 gdouble dx = (p[NR::X] - ellipse->cx.computed) / ellipse->rx.computed;
617 gdouble dy = (p[NR::Y] - ellipse->cy.computed) / ellipse->ry.computed;
619 gdouble s = dx * dx + dy * dy;
620 if (s < 1.0) return 1;
621 if (s > 1.0) return -1;
622 return 0;
623 }
625 static void
626 sp_arc_start_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
627 {
628 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
630 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
631 SPArc *arc = SP_ARC(item);
633 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
635 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
636 NR::scale sc(ge->rx.computed, ge->ry.computed);
637 ge->start = atan2(delta * sc.inverse());
638 if ( ( state & GDK_CONTROL_MASK )
639 && snaps )
640 {
641 ge->start = sp_round(ge->start, M_PI/snaps);
642 }
643 sp_genericellipse_normalize(ge);
644 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
645 }
647 static NR::Point sp_arc_start_get(SPItem *item)
648 {
649 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
650 SPArc *arc = SP_ARC(item);
652 return sp_arc_get_xy(arc, ge->start);
653 }
655 static void
656 sp_arc_end_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
657 {
658 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
660 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
661 SPArc *arc = SP_ARC(item);
663 ge->closed = (sp_genericellipse_side(ge, p) == -1) ? TRUE : FALSE;
665 NR::Point delta = p - NR::Point(ge->cx.computed, ge->cy.computed);
666 NR::scale sc(ge->rx.computed, ge->ry.computed);
667 ge->end = atan2(delta * sc.inverse());
668 if ( ( state & GDK_CONTROL_MASK )
669 && snaps )
670 {
671 ge->end = sp_round(ge->end, M_PI/snaps);
672 }
673 sp_genericellipse_normalize(ge);
674 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
675 }
677 static NR::Point sp_arc_end_get(SPItem *item)
678 {
679 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
680 SPArc *arc = SP_ARC(item);
682 return sp_arc_get_xy(arc, ge->end);
683 }
685 static void
686 sp_arc_startend_click(SPItem *item, guint state)
687 {
688 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
690 if (state & GDK_SHIFT_MASK) {
691 ge->end = ge->start = 0;
692 ((SPObject *)ge)->updateRepr();
693 }
694 }
697 static void
698 sp_arc_rx_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
699 {
700 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
701 SPArc *arc = SP_ARC(item);
703 NR::Point const s = snap_knot_position(arc, p);
705 ge->rx.computed = fabs( ge->cx.computed - s[NR::X] );
707 if ( state & GDK_CONTROL_MASK ) {
708 ge->ry.computed = ge->rx.computed;
709 }
711 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
712 }
714 static NR::Point sp_arc_rx_get(SPItem *item)
715 {
716 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
718 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(ge->rx.computed, 0));
719 }
721 static void
722 sp_arc_ry_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
723 {
724 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
725 SPArc *arc = SP_ARC(item);
727 NR::Point const s = snap_knot_position(arc, p);
729 ge->ry.computed = fabs( ge->cy.computed - s[NR::Y] );
731 if ( state & GDK_CONTROL_MASK ) {
732 ge->rx.computed = ge->ry.computed;
733 }
735 ((SPObject *)arc)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
736 }
738 static NR::Point sp_arc_ry_get(SPItem *item)
739 {
740 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
742 return (NR::Point(ge->cx.computed, ge->cy.computed) - NR::Point(0, ge->ry.computed));
743 }
745 static void
746 sp_arc_rx_click(SPItem *item, guint state)
747 {
748 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
750 if (state & GDK_CONTROL_MASK) {
751 ge->ry.computed = ge->rx.computed;
752 ((SPObject *)ge)->updateRepr();
753 }
754 }
756 static void
757 sp_arc_ry_click(SPItem *item, guint state)
758 {
759 SPGenericEllipse *ge = SP_GENERICELLIPSE(item);
761 if (state & GDK_CONTROL_MASK) {
762 ge->rx.computed = ge->ry.computed;
763 ((SPObject *)ge)->updateRepr();
764 }
765 }
767 static SPKnotHolder *
768 sp_arc_knot_holder(SPItem *item, SPDesktop *desktop)
769 {
770 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
772 sp_knot_holder_add_full(knot_holder, sp_arc_rx_set, sp_arc_rx_get, sp_arc_rx_click,
773 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
774 _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"));
775 sp_knot_holder_add_full(knot_holder, sp_arc_ry_set, sp_arc_ry_get, sp_arc_ry_click,
776 SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
777 _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"));
778 sp_knot_holder_add_full(knot_holder, sp_arc_start_set, sp_arc_start_get, sp_arc_startend_click,
779 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
780 _("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"));
781 sp_knot_holder_add_full(knot_holder, sp_arc_end_set, sp_arc_end_get, sp_arc_startend_click,
782 SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
783 _("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"));
785 sp_pat_knot_holder(item, knot_holder);
787 return knot_holder;
788 }
790 /* SPStar */
792 static void
793 sp_star_knot1_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
794 {
795 SPStar *star = SP_STAR(item);
797 NR::Point const s = snap_knot_position(star, p);
799 NR::Point d = s - star->center;
801 double arg1 = atan2(d);
802 double darg1 = arg1 - star->arg[0];
804 if (state & GDK_MOD1_MASK) {
805 star->randomized = darg1/(star->arg[0] - star->arg[1]);
806 } else if (state & GDK_SHIFT_MASK) {
807 star->rounded = darg1/(star->arg[0] - star->arg[1]);
808 } else if (state & GDK_CONTROL_MASK) {
809 star->r[0] = L2(d);
810 } else {
811 star->r[0] = L2(d);
812 star->arg[0] = arg1;
813 star->arg[1] += darg1;
814 }
815 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
816 }
818 static void
819 sp_star_knot2_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
820 {
821 SPStar *star = SP_STAR(item);
823 NR::Point const s = snap_knot_position(star, p);
825 if (star->flatsided == false) {
826 NR::Point d = s - star->center;
828 double arg1 = atan2(d);
829 double darg1 = arg1 - star->arg[1];
831 if (state & GDK_MOD1_MASK) {
832 star->randomized = darg1/(star->arg[0] - star->arg[1]);
833 } else if (state & GDK_SHIFT_MASK) {
834 star->rounded = fabs(darg1/(star->arg[0] - star->arg[1]));
835 } else if (state & GDK_CONTROL_MASK) {
836 star->r[1] = L2(d);
837 star->arg[1] = star->arg[0] + M_PI / star->sides;
838 }
839 else {
840 star->r[1] = L2(d);
841 star->arg[1] = atan2(d);
842 }
843 ((SPObject *)star)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
844 }
845 }
847 static NR::Point sp_star_knot1_get(SPItem *item)
848 {
849 g_assert(item != NULL);
851 SPStar *star = SP_STAR(item);
853 return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0);
855 }
857 static NR::Point sp_star_knot2_get(SPItem *item)
858 {
859 g_assert(item != NULL);
861 SPStar *star = SP_STAR(item);
863 return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
864 }
866 static void
867 sp_star_knot_click(SPItem *item, guint state)
868 {
869 SPStar *star = SP_STAR(item);
871 if (state & GDK_MOD1_MASK) {
872 star->randomized = 0;
873 ((SPObject *)star)->updateRepr();
874 } else if (state & GDK_SHIFT_MASK) {
875 star->rounded = 0;
876 ((SPObject *)star)->updateRepr();
877 } else if (state & GDK_CONTROL_MASK) {
878 star->arg[1] = star->arg[0] + M_PI / star->sides;
879 ((SPObject *)star)->updateRepr();
880 }
881 }
883 static SPKnotHolder *
884 sp_star_knot_holder(SPItem *item, SPDesktop *desktop)
885 {
886 /* we don't need to get parent knot_holder */
887 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
888 g_assert(item != NULL);
890 SPStar *star = SP_STAR(item);
892 sp_knot_holder_add(knot_holder, sp_star_knot1_set, sp_star_knot1_get, sp_star_knot_click,
893 _("Adjust the <b>tip radius</b> of the star or polygon; with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
894 if (star->flatsided == false)
895 sp_knot_holder_add(knot_holder, sp_star_knot2_set, sp_star_knot2_get, sp_star_knot_click,
896 _("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"));
898 sp_pat_knot_holder(item, knot_holder);
900 return knot_holder;
901 }
903 /* SPSpiral */
905 /*
906 * set attributes via inner (t=t0) knot point:
907 * [default] increase/decrease inner point
908 * [shift] increase/decrease inner and outer arg synchronizely
909 * [control] constrain inner arg to round per PI/4
910 */
911 static void
912 sp_spiral_inner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
913 {
914 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
916 SPSpiral *spiral = SP_SPIRAL(item);
918 gdouble dx = p[NR::X] - spiral->cx;
919 gdouble dy = p[NR::Y] - spiral->cy;
921 if (state & GDK_MOD1_MASK) {
922 // adjust divergence by vertical drag, relative to rad
923 double new_exp = (spiral->rad + dy)/(spiral->rad);
924 spiral->exp = new_exp > 0? new_exp : 0;
925 } else {
926 // roll/unroll from inside
927 gdouble arg_t0;
928 sp_spiral_get_polar(spiral, spiral->t0, NULL, &arg_t0);
930 gdouble arg_tmp = atan2(dy, dx) - arg_t0;
931 gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0;
932 spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo);
934 /* round inner arg per PI/snaps, if CTRL is pressed */
935 if ( ( state & GDK_CONTROL_MASK )
936 && ( fabs(spiral->revo) > SP_EPSILON_2 )
937 && ( snaps != 0 ) ) {
938 gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg;
939 spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo);
940 }
942 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
943 }
945 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
946 }
948 /*
949 * set attributes via outer (t=1) knot point:
950 * [default] increase/decrease revolution factor
951 * [control] constrain inner arg to round per PI/4
952 */
953 static void
954 sp_spiral_outer_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
955 {
956 int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
958 SPSpiral *spiral = SP_SPIRAL(item);
960 gdouble dx = p[NR::X] - spiral->cx;
961 gdouble dy = p[NR::Y] - spiral->cy;
963 if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll
964 spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo;
965 if (!(state & GDK_MOD1_MASK)) {
966 // if alt not pressed, change also rad; otherwise it is locked
967 spiral->rad = MAX(hypot(dx, dy), 0.001);
968 }
969 if ( ( state & GDK_CONTROL_MASK )
970 && snaps ) {
971 spiral->arg = sp_round(spiral->arg, M_PI/snaps);
972 }
973 } else { // roll/unroll
974 // arg of the spiral outer end
975 double arg_1;
976 sp_spiral_get_polar(spiral, 1, NULL, &arg_1);
978 // its fractional part after the whole turns are subtracted
979 double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI);
981 // arg of the mouse point relative to spiral center
982 double mouse_angle = atan2(dy, dx);
983 if (mouse_angle < 0)
984 mouse_angle += 2*M_PI;
986 // snap if ctrl
987 if ( ( state & GDK_CONTROL_MASK ) && snaps ) {
988 mouse_angle = sp_round(mouse_angle, M_PI/snaps);
989 }
991 // by how much we want to rotate the outer point
992 double diff = mouse_angle - arg_r;
993 if (diff > M_PI)
994 diff -= 2*M_PI;
995 else if (diff < -M_PI)
996 diff += 2*M_PI;
998 // calculate the new rad;
999 // the value of t corresponding to the angle arg_1 + diff:
1000 double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo);
1001 // the rad at that t:
1002 double rad_new = 0;
1003 if (t_temp > spiral->t0)
1004 sp_spiral_get_polar(spiral, t_temp, &rad_new, NULL);
1006 // change the revo (converting diff from radians to the number of turns)
1007 spiral->revo += diff/(2*M_PI);
1008 if (spiral->revo < 1e-3)
1009 spiral->revo = 1e-3;
1011 // if alt not pressed and the values are sane, change the rad
1012 if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) {
1013 // adjust t0 too so that the inner point stays unmoved
1014 double r0;
1015 sp_spiral_get_polar(spiral, spiral->t0, &r0, NULL);
1016 spiral->rad = rad_new;
1017 spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp);
1018 }
1019 if (!isFinite(spiral->t0)) spiral->t0 = 0.0;
1020 spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999);
1021 }
1023 ((SPObject *)spiral)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1024 }
1026 static NR::Point sp_spiral_inner_get(SPItem *item)
1027 {
1028 SPSpiral *spiral = SP_SPIRAL(item);
1030 return sp_spiral_get_xy(spiral, spiral->t0);
1031 }
1033 static NR::Point sp_spiral_outer_get(SPItem *item)
1034 {
1035 SPSpiral *spiral = SP_SPIRAL(item);
1037 return sp_spiral_get_xy(spiral, 1.0);
1038 }
1040 static void
1041 sp_spiral_inner_click(SPItem *item, guint state)
1042 {
1043 SPSpiral *spiral = SP_SPIRAL(item);
1045 if (state & GDK_MOD1_MASK) {
1046 spiral->exp = 1;
1047 ((SPObject *)spiral)->updateRepr();
1048 } else if (state & GDK_SHIFT_MASK) {
1049 spiral->t0 = 0;
1050 ((SPObject *)spiral)->updateRepr();
1051 }
1052 }
1054 static SPKnotHolder *
1055 sp_spiral_knot_holder(SPItem *item, SPDesktop *desktop)
1056 {
1057 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1059 sp_knot_holder_add(knot_holder, sp_spiral_inner_set, sp_spiral_inner_get, sp_spiral_inner_click,
1060 _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; with <b>Alt</b> to converge/diverge"));
1061 sp_knot_holder_add(knot_holder, sp_spiral_outer_set, sp_spiral_outer_get, NULL,
1062 _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to scale/rotate"));
1064 sp_pat_knot_holder(item, knot_holder);
1066 return knot_holder;
1067 }
1069 /* SPOffset */
1071 static void
1072 sp_offset_offset_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1073 {
1074 SPOffset *offset = SP_OFFSET(item);
1076 offset->rad = sp_offset_distance_to_original(offset, p);
1077 offset->knot = p;
1078 offset->knotSet = true;
1080 ((SPObject *)offset)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
1081 }
1084 static NR::Point sp_offset_offset_get(SPItem *item)
1085 {
1086 SPOffset *offset = SP_OFFSET(item);
1088 NR::Point np;
1089 sp_offset_top_point(offset,&np);
1090 return np;
1091 }
1093 static SPKnotHolder *
1094 sp_offset_knot_holder(SPItem *item, SPDesktop *desktop)
1095 {
1096 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1098 sp_knot_holder_add(knot_holder, sp_offset_offset_set, sp_offset_offset_get, NULL,
1099 _("Adjust the <b>offset distance</b>"));
1101 sp_pat_knot_holder(item, knot_holder);
1103 return knot_holder;
1104 }
1106 static SPKnotHolder *
1107 sp_path_knot_holder(SPItem *item, SPDesktop *desktop) // FIXME: eliminate, instead make a pattern-drag similar to gradient-drag
1108 {
1109 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1110 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1111 {
1112 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, item, NULL);
1114 sp_pat_knot_holder(item, knot_holder);
1116 return knot_holder;
1117 }
1118 return NULL;
1119 }
1121 static void
1122 sp_pat_knot_holder(SPItem *item, SPKnotHolder *knot_holder)
1123 {
1124 if ((SP_OBJECT(item)->style->fill.type == SP_PAINT_TYPE_PAINTSERVER)
1125 && SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
1126 {
1127 sp_knot_holder_add_full(knot_holder, sp_pattern_xy_set, sp_pattern_xy_get, NULL, SP_KNOT_SHAPE_CROSS, SP_KNOT_MODE_XOR,
1128 // TRANSLATORS: This refers to the pattern that's inside the object
1129 _("<b>Move</b> the pattern fill inside the object"));
1130 sp_knot_holder_add_full(knot_holder, sp_pattern_scale_set, sp_pattern_scale_get, NULL, SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR,
1131 _("<b>Scale</b> the pattern fill uniformly"));
1132 sp_knot_holder_add_full(knot_holder, sp_pattern_angle_set, sp_pattern_angle_get, NULL, SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR,
1133 _("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"));
1134 }
1135 }
1137 static NR::Point sp_flowtext_corner_get(SPItem *item)
1138 {
1139 SPRect *rect = SP_RECT(item);
1141 return NR::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed);
1142 }
1144 static void
1145 sp_flowtext_corner_set(SPItem *item, NR::Point const &p, NR::Point const &origin, guint state)
1146 {
1147 SPRect *rect = SP_RECT(item);
1149 sp_rect_wh_set_internal(rect, p, origin, state);
1150 }
1152 static SPKnotHolder *
1153 sp_flowtext_knot_holder(SPItem *item, SPDesktop *desktop)
1154 {
1155 SPKnotHolder *knot_holder = sp_knot_holder_new(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL);
1157 sp_knot_holder_add(knot_holder, sp_flowtext_corner_set, sp_flowtext_corner_get, NULL,
1158 _("Drag to resize the <b>flowed text frame</b>"));
1160 return knot_holder;
1161 }
1164 /*
1165 Local Variables:
1166 mode:c++
1167 c-file-style:"stroustrup"
1168 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1169 indent-tabs-mode:nil
1170 fill-column:99
1171 End:
1172 */
1173 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :