736ebf2eb7e5f7764f6123198dcb38eecbdddd51
1 #define __SP_TWEAK_CONTEXT_C__
3 /*
4 * tweaking paths without node editing
5 *
6 * Authors:
7 * bulia byak
8 *
9 * Copyright (C) 2007 authors
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #include "config.h"
16 #include <gtk/gtk.h>
17 #include <gdk/gdkkeysyms.h>
18 #include <glibmm/i18n.h>
20 #include <numeric>
22 #include "svg/svg.h"
23 #include "display/canvas-bpath.h"
24 #include "display/bezier-utils.h"
26 #include <glib/gmem.h>
27 #include "macros.h"
28 #include "document.h"
29 #include "selection.h"
30 #include "desktop.h"
31 #include "desktop-events.h"
32 #include "desktop-handles.h"
33 #include "desktop-affine.h"
34 #include "desktop-style.h"
35 #include "message-context.h"
36 #include "pixmaps/cursor-thin.xpm"
37 #include "pixmaps/cursor-thicken.xpm"
38 #include "pixmaps/cursor-attract.xpm"
39 #include "pixmaps/cursor-repel.xpm"
40 #include "pixmaps/cursor-push.xpm"
41 #include "pixmaps/cursor-roughen.xpm"
42 #include "pixmaps/cursor-color.xpm"
43 #include "libnr/n-art-bpath.h"
44 #include "libnr/nr-path.h"
45 #include "libnr/nr-maybe.h"
46 #include "libnr/nr-matrix-ops.h"
47 #include "libnr/nr-scale-translate-ops.h"
48 #include "xml/repr.h"
49 #include "context-fns.h"
50 #include "sp-item.h"
51 #include "inkscape.h"
52 #include "color.h"
53 #include "svg/svg-color.h"
54 #include "splivarot.h"
55 #include "sp-item-group.h"
56 #include "sp-shape.h"
57 #include "sp-path.h"
58 #include "path-chemistry.h"
59 #include "sp-gradient.h"
60 #include "sp-stop.h"
61 #include "sp-stop-fns.h"
62 #include "sp-gradient-reference.h"
63 #include "sp-linear-gradient.h"
64 #include "sp-radial-gradient.h"
65 #include "gradient-chemistry.h"
66 #include "sp-text.h"
67 #include "sp-flowtext.h"
68 #include "display/canvas-bpath.h"
69 #include "display/canvas-arena.h"
70 #include "livarot/Shape.h"
71 #include "isnan.h"
72 #include "prefs-utils.h"
73 #include "style.h"
74 #include "box3d.h"
76 #include "tweak-context.h"
78 #define DDC_RED_RGBA 0xff0000ff
80 #define DYNA_MIN_WIDTH 1.0e-6
82 // FIXME: move it to some shared file to be reused by both calligraphy and dropper
83 #define C1 0.552
84 static NArtBpath const hatch_area_circle[] = {
85 { NR_MOVETO, 0, 0, 0, 0, -1, 0 },
86 { NR_CURVETO, -1, C1, -C1, 1, 0, 1 },
87 { NR_CURVETO, C1, 1, 1, C1, 1, 0 },
88 { NR_CURVETO, 1, -C1, C1, -1, 0, -1 },
89 { NR_CURVETO, -C1, -1, -1, -C1, -1, 0 },
90 { NR_END, 0, 0, 0, 0, 0, 0 }
91 };
92 #undef C1
95 static void sp_tweak_context_class_init(SPTweakContextClass *klass);
96 static void sp_tweak_context_init(SPTweakContext *ddc);
97 static void sp_tweak_context_dispose(GObject *object);
99 static void sp_tweak_context_setup(SPEventContext *ec);
100 static void sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
101 static gint sp_tweak_context_root_handler(SPEventContext *ec, GdkEvent *event);
103 static SPEventContextClass *parent_class;
105 GtkType
106 sp_tweak_context_get_type(void)
107 {
108 static GType type = 0;
109 if (!type) {
110 GTypeInfo info = {
111 sizeof(SPTweakContextClass),
112 NULL, NULL,
113 (GClassInitFunc) sp_tweak_context_class_init,
114 NULL, NULL,
115 sizeof(SPTweakContext),
116 4,
117 (GInstanceInitFunc) sp_tweak_context_init,
118 NULL, /* value_table */
119 };
120 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPTweakContext", &info, (GTypeFlags)0);
121 }
122 return type;
123 }
125 static void
126 sp_tweak_context_class_init(SPTweakContextClass *klass)
127 {
128 GObjectClass *object_class = (GObjectClass *) klass;
129 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
131 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
133 object_class->dispose = sp_tweak_context_dispose;
135 event_context_class->setup = sp_tweak_context_setup;
136 event_context_class->set = sp_tweak_context_set;
137 event_context_class->root_handler = sp_tweak_context_root_handler;
138 }
140 static void
141 sp_tweak_context_init(SPTweakContext *tc)
142 {
143 SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
145 event_context->cursor_shape = cursor_push_xpm;
146 event_context->hot_x = 4;
147 event_context->hot_y = 4;
149 /* attributes */
150 tc->dragging = FALSE;
152 tc->width = 0.2;
153 tc->force = 0.2;
154 tc->pressure = TC_DEFAULT_PRESSURE;
156 tc->is_dilating = false;
157 tc->has_dilated = false;
159 tc->do_h = true;
160 tc->do_s = true;
161 tc->do_l = true;
162 tc->do_o = false;
164 new (&tc->style_set_connection) sigc::connection();
165 }
167 static void
168 sp_tweak_context_dispose(GObject *object)
169 {
170 SPTweakContext *tc = SP_TWEAK_CONTEXT(object);
172 tc->style_set_connection.disconnect();
173 tc->style_set_connection.~connection();
175 if (tc->dilate_area) {
176 gtk_object_destroy(GTK_OBJECT(tc->dilate_area));
177 tc->dilate_area = NULL;
178 }
180 if (tc->_message_context) {
181 delete tc->_message_context;
182 }
184 G_OBJECT_CLASS(parent_class)->dispose(object);
185 }
187 void
188 sp_tweak_update_cursor (SPTweakContext *tc, gint mode)
189 {
190 SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
191 switch (mode) {
192 case TWEAK_MODE_PUSH:
193 event_context->cursor_shape = cursor_push_xpm;
194 break;
195 case TWEAK_MODE_SHRINK:
196 event_context->cursor_shape = cursor_thin_xpm;
197 break;
198 case TWEAK_MODE_GROW:
199 event_context->cursor_shape = cursor_thicken_xpm;
200 break;
201 case TWEAK_MODE_ATTRACT:
202 event_context->cursor_shape = cursor_attract_xpm;
203 break;
204 case TWEAK_MODE_REPEL:
205 event_context->cursor_shape = cursor_repel_xpm;
206 break;
207 case TWEAK_MODE_ROUGHEN:
208 event_context->cursor_shape = cursor_roughen_xpm;
209 break;
210 case TWEAK_MODE_COLORPAINT:
211 case TWEAK_MODE_COLORJITTER:
212 event_context->cursor_shape = cursor_color_xpm;
213 break;
214 }
215 sp_event_context_update_cursor(event_context);
216 }
218 static bool
219 sp_tweak_context_style_set(SPCSSAttr const *css, SPTweakContext *tc)
220 {
221 if (tc->mode == TWEAK_MODE_COLORPAINT) { // intercept color setting only in this mode
222 // we cannot store properties with uris
223 css = sp_css_attr_unset_uris ((SPCSSAttr *) css);
225 sp_repr_css_change (inkscape_get_repr (INKSCAPE, "tools.tweak"), (SPCSSAttr *) css, "style");
227 return true;
228 }
229 return false;
230 }
233 static void
234 sp_tweak_context_setup(SPEventContext *ec)
235 {
236 SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
238 if (((SPEventContextClass *) parent_class)->setup)
239 ((SPEventContextClass *) parent_class)->setup(ec);
241 {
242 SPCurve *c = sp_curve_new_from_foreign_bpath(hatch_area_circle);
243 tc->dilate_area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c);
244 sp_curve_unref(c);
245 sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(tc->dilate_area), 0x00000000,(SPWindRule)0);
246 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(tc->dilate_area), 0xff9900ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
247 sp_canvas_item_hide(tc->dilate_area);
248 }
250 sp_event_context_read(ec, "width");
251 sp_event_context_read(ec, "mode");
252 sp_event_context_read(ec, "fidelity");
253 sp_event_context_read(ec, "force");
254 sp_event_context_read(ec, "usepressure");
255 sp_event_context_read(ec, "doh");
256 sp_event_context_read(ec, "dol");
257 sp_event_context_read(ec, "dos");
258 sp_event_context_read(ec, "doo");
260 tc->is_drawing = false;
262 tc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
264 tc->style_set_connection = ec->desktop->connectSetStyle( // catch style-setting signal in this tool
265 sigc::bind(sigc::ptr_fun(&sp_tweak_context_style_set), tc)
266 );
268 if (prefs_get_int_attribute("tools.tweak", "selcue", 0) != 0) {
269 ec->enableSelectionCue();
270 }
272 if (prefs_get_int_attribute("tools.tweak", "gradientdrag", 0) != 0) {
273 ec->enableGrDrag();
274 }
275 }
277 static void
278 sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
279 {
280 SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
282 if (!strcmp(key, "width")) {
283 double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.1 );
284 tc->width = CLAMP(dval, -1000.0, 1000.0);
285 } else if (!strcmp(key, "mode")) {
286 gint64 const dval = ( val ? g_ascii_strtoll (val, NULL, 10) : 0 );
287 tc->mode = dval;
288 sp_tweak_update_cursor(tc, tc->mode);
289 } else if (!strcmp(key, "fidelity")) {
290 double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.0 );
291 tc->fidelity = CLAMP(dval, 0.0, 1.0);
292 } else if (!strcmp(key, "force")) {
293 double const dval = ( val ? g_ascii_strtod (val, NULL) : 1.0 );
294 tc->force = CLAMP(dval, 0, 1.0);
295 } else if (!strcmp(key, "usepressure")) {
296 tc->usepressure = (val && strcmp(val, "0"));
297 } else if (!strcmp(key, "doh")) {
298 tc->do_h = (val && strcmp(val, "0"));
299 } else if (!strcmp(key, "dos")) {
300 tc->do_s = (val && strcmp(val, "0"));
301 } else if (!strcmp(key, "dol")) {
302 tc->do_l = (val && strcmp(val, "0"));
303 } else if (!strcmp(key, "doo")) {
304 tc->do_o = (val && strcmp(val, "0"));
305 }
306 }
308 static void
309 sp_tweak_extinput(SPTweakContext *tc, GdkEvent *event)
310 {
311 if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &tc->pressure))
312 tc->pressure = CLAMP (tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE);
313 else
314 tc->pressure = TC_DEFAULT_PRESSURE;
315 }
317 double
318 get_dilate_radius (SPTweakContext *tc)
319 {
320 // 10 times the pen width:
321 return 500 * tc->width/SP_EVENT_CONTEXT(tc)->desktop->current_zoom();
322 }
324 double
325 get_dilate_force (SPTweakContext *tc)
326 {
327 double force = 8 * (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE)
328 /sqrt(SP_EVENT_CONTEXT(tc)->desktop->current_zoom());
329 if (force > 3) {
330 force += 4 * (force - 3);
331 }
332 return force * tc->force;
333 }
335 bool
336 sp_tweak_dilate_recursive (Inkscape::Selection *selection, SPItem *item, NR::Point p, NR::Point vector, gint mode, double radius, double force, double fidelity)
337 {
338 bool did = false;
340 if (SP_IS_BOX3D(item)) {
341 // convert 3D boxes to ordinary groups before tweaking their shapes
342 item = SP_ITEM(box3d_convert_to_group(SP_BOX3D(item)));
343 selection->add(item);
344 }
346 if (SP_IS_GROUP(item)) {
347 for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
348 if (SP_IS_ITEM(child)) {
349 if (sp_tweak_dilate_recursive (selection, SP_ITEM(child), p, vector, mode, radius, force, fidelity))
350 did = true;
351 }
352 }
354 } else if (SP_IS_PATH(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
356 Inkscape::XML::Node *newrepr = NULL;
357 gint pos = 0;
358 Inkscape::XML::Node *parent = NULL;
359 char const *id = NULL;
360 if (!SP_IS_PATH(item)) {
361 newrepr = sp_selected_item_to_curved_repr(item, 0);
362 if (!newrepr)
363 return false;
365 // remember the position of the item
366 pos = SP_OBJECT_REPR(item)->position();
367 // remember parent
368 parent = SP_OBJECT_REPR(item)->parent();
369 // remember id
370 id = SP_OBJECT_REPR(item)->attribute("id");
371 }
374 // skip those paths whose bboxes are entirely out of reach with our radius
375 NR::Maybe<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item));
376 if (bbox) {
377 bbox->growBy(radius);
378 if (!bbox->contains(p)) {
379 return false;
380 }
381 }
383 Path *orig = Path_for_item(item, false);
384 if (orig == NULL) {
385 return false;
386 }
388 Path *res = new Path;
389 res->SetBackData(false);
391 Shape *theShape = new Shape;
392 Shape *theRes = new Shape;
394 orig->ConvertWithBackData(0.08 - (0.07 * fidelity)); // default 0.059
395 orig->Fill(theShape, 0);
397 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
398 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
399 if (val && strcmp(val, "nonzero") == 0)
400 {
401 theRes->ConvertToShape(theShape, fill_nonZero);
402 }
403 else if (val && strcmp(val, "evenodd") == 0)
404 {
405 theRes->ConvertToShape(theShape, fill_oddEven);
406 }
407 else
408 {
409 theRes->ConvertToShape(theShape, fill_nonZero);
410 }
412 if (NR::L2(vector) != 0)
413 vector = 1/NR::L2(vector) * vector;
415 bool did_this = false;
416 NR::Matrix i2doc(sp_item_i2doc_affine(item));
417 if (mode == TWEAK_MODE_SHRINK || mode == TWEAK_MODE_GROW) {
418 if (theShape->MakeTweak(tweak_mode_grow, theRes,
419 mode == TWEAK_MODE_GROW? force : -force,
420 join_straight, 4.0,
421 true, p, NR::Point(0,0), radius, &i2doc) == 0) // 0 means the shape was actually changed
422 did_this = true;
423 } else if (mode == TWEAK_MODE_ATTRACT || mode == TWEAK_MODE_REPEL) {
424 if (theShape->MakeTweak(tweak_mode_repel, theRes,
425 mode == TWEAK_MODE_REPEL? force : -force,
426 join_straight, 4.0,
427 true, p, NR::Point(0,0), radius, &i2doc) == 0)
428 did_this = true;
429 } else if (mode == TWEAK_MODE_PUSH) {
430 if (theShape->MakeTweak(tweak_mode_push, theRes,
431 0,
432 join_straight, 4.0,
433 true, p, force*2*vector, radius, &i2doc) == 0)
434 did_this = true;
435 } else if (mode == TWEAK_MODE_ROUGHEN) {
436 if (theShape->MakeTweak(tweak_mode_roughen, theRes,
437 force,
438 join_straight, 4.0,
439 true, p, NR::Point(0,0), radius, &i2doc) == 0)
440 did_this = true;
441 }
443 // the rest only makes sense if we actually changed the path
444 if (did_this) {
445 theRes->ConvertToShape(theShape, fill_positive);
447 res->Reset();
448 theRes->ConvertToForme(res);
450 double th_max = 0.6 - 0.59*sqrt(fidelity);
451 double threshold = MAX(th_max, th_max*force);
452 res->ConvertEvenLines(threshold);
453 res->Simplify(threshold);
455 if (newrepr) { // converting to path, need to replace the repr
456 bool is_selected = selection->includes(item);
457 if (is_selected)
458 selection->remove(item);
460 // It's going to resurrect, so we delete without notifying listeners.
461 SP_OBJECT(item)->deleteObject(false);
463 // restore id
464 newrepr->setAttribute("id", id);
465 // add the new repr to the parent
466 parent->appendChild(newrepr);
467 // move to the saved position
468 newrepr->setPosition(pos > 0 ? pos : 0);
470 if (is_selected)
471 selection->add(newrepr);
472 }
474 if (res->descr_cmd.size() > 1) {
475 gchar *str = res->svg_dump_path();
476 if (newrepr) {
477 newrepr->setAttribute("d", str);
478 } else {
479 if (SP_IS_SHAPE(item) && SP_SHAPE(item)->path_effect_href) {
480 SP_OBJECT_REPR(item)->setAttribute("inkscape:original-d", str);
481 } else {
482 SP_OBJECT_REPR(item)->setAttribute("d", str);
483 }
484 }
485 g_free(str);
486 } else {
487 // TODO: if there's 0 or 1 node left, delete this path altogether
488 }
490 if (newrepr) {
491 Inkscape::GC::release(newrepr);
492 newrepr = NULL;
493 }
494 }
496 delete theShape;
497 delete theRes;
498 delete orig;
499 delete res;
501 if (did_this)
502 did = true;
503 }
505 return did;
506 }
508 void
509 tweak_colorpaint (float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
510 {
511 float rgb_g[3];
513 if (!do_h || !do_s || !do_l) {
514 float hsl_g[3];
515 sp_color_rgb_to_hsl_floatv (hsl_g, SP_RGBA32_R_F(goal), SP_RGBA32_G_F(goal), SP_RGBA32_B_F(goal));
516 float hsl_c[3];
517 sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
518 if (!do_h)
519 hsl_g[0] = hsl_c[0];
520 if (!do_s)
521 hsl_g[1] = hsl_c[1];
522 if (!do_l)
523 hsl_g[2] = hsl_c[2];
524 sp_color_hsl_to_rgb_floatv (rgb_g, hsl_g[0], hsl_g[1], hsl_g[2]);
525 } else {
526 rgb_g[0] = SP_RGBA32_R_F(goal);
527 rgb_g[1] = SP_RGBA32_G_F(goal);
528 rgb_g[2] = SP_RGBA32_B_F(goal);
529 }
531 for (int i = 0; i < 3; i++) {
532 double d = rgb_g[i] - color[i];
533 color[i] += d * force;
534 }
535 }
537 void
538 tweak_colorjitter (float *color, double force, bool do_h, bool do_s, bool do_l)
539 {
540 float hsl_c[3];
541 sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
543 if (do_h) {
544 hsl_c[0] += g_random_double_range(-0.5, 0.5) * force;
545 if (hsl_c[0] > 1)
546 hsl_c[0] -= 1;
547 if (hsl_c[0] < 0)
548 hsl_c[0] += 1;
549 }
550 if (do_s) {
551 hsl_c[1] += g_random_double_range(-hsl_c[1], 1 - hsl_c[1]) * force;
552 }
553 if (do_l) {
554 hsl_c[2] += g_random_double_range(-hsl_c[2], 1 - hsl_c[2]) * force;
555 }
557 sp_color_hsl_to_rgb_floatv (color, hsl_c[0], hsl_c[1], hsl_c[2]);
558 }
560 void
561 tweak_color (guint mode, float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
562 {
563 if (mode == TWEAK_MODE_COLORPAINT) {
564 tweak_colorpaint (color, goal, force, do_h, do_s, do_l);
565 } else if (mode == TWEAK_MODE_COLORJITTER) {
566 tweak_colorjitter (color, force, do_h, do_s, do_l);
567 }
568 }
570 void
571 tweak_opacity (guint mode, SPIScale24 *style_opacity, double opacity_goal, double force)
572 {
573 double opacity = SP_SCALE24_TO_FLOAT (style_opacity->value);
575 if (mode == TWEAK_MODE_COLORPAINT) {
576 double d = opacity_goal - opacity;
577 opacity += d * force;
578 } else if (mode == TWEAK_MODE_COLORJITTER) {
579 opacity += g_random_double_range(-opacity, 1 - opacity) * force;
580 }
582 style_opacity->value = SP_SCALE24_FROM_FLOAT(opacity);
583 }
586 double
587 tweak_profile (double dist, double radius)
588 {
589 if (radius == 0)
590 return 0;
591 double x = dist / radius;
592 double alpha = 1;
593 if (x >= 1) {
594 return 0;
595 } else if (x <= 0) {
596 return 1;
597 } else {
598 return (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
599 }
600 }
602 void
603 tweak_colors_in_gradient (SPItem *item, bool fill_or_stroke,
604 guint32 const rgb_goal, NR::Point p_w, double radius, double force, guint mode,
605 bool do_h, bool do_s, bool do_l, bool /*do_o*/)
606 {
607 SPGradient *gradient = sp_item_gradient (item, fill_or_stroke);
609 if (!gradient || !SP_IS_GRADIENT(gradient))
610 return;
612 NR::Matrix i2d = sp_item_i2doc_affine (item);
613 NR::Point p = p_w * i2d.inverse();
614 p *= (gradient->gradientTransform).inverse();
615 // now p is in gradient's original coordinates
617 double pos = 0;
618 double r = 0;
619 if (SP_IS_LINEARGRADIENT(gradient)) {
620 SPLinearGradient *lg = SP_LINEARGRADIENT(gradient);
622 NR::Point p1(lg->x1.computed, lg->y1.computed);
623 NR::Point p2(lg->x2.computed, lg->y2.computed);
624 NR::Point pdiff(p2 - p1);
625 double vl = NR::L2(pdiff);
627 // This is the matrix which moves and rotates the gradient line
628 // so it's oriented along the X axis:
629 NR::Matrix norm = NR::Matrix(NR::translate(-p1)) * NR::Matrix(NR::rotate(-atan2(pdiff[NR::Y], pdiff[NR::X])));
631 // Transform the mouse point by it to find out its projection onto the gradient line:
632 NR::Point pnorm = p * norm;
634 // Scale its X coordinate to match the length of the gradient line:
635 pos = pnorm[NR::X] / vl;
636 // Calculate radius in lenfth-of-gradient-line units
637 r = radius / vl;
639 } else if (SP_IS_RADIALGRADIENT(gradient)) {
640 SPRadialGradient *rg = SP_RADIALGRADIENT(gradient);
641 NR::Point c (rg->cx.computed, rg->cy.computed);
642 pos = NR::L2(p - c) / rg->r.computed;
643 r = radius / rg->r.computed;
644 }
646 // Normalize pos to 0..1, taking into accound gradient spread:
647 double pos_e = pos;
648 if (gradient->spread == SP_GRADIENT_SPREAD_PAD) {
649 if (pos > 1)
650 pos_e = 1;
651 if (pos < 0)
652 pos_e = 0;
653 } else if (gradient->spread == SP_GRADIENT_SPREAD_REPEAT) {
654 if (pos > 1 || pos < 0)
655 pos_e = pos - floor(pos);
656 } else if (gradient->spread == SP_GRADIENT_SPREAD_REFLECT) {
657 if (pos > 1 || pos < 0) {
658 bool odd = ((int)(floor(pos)) % 2 == 1);
659 pos_e = pos - floor(pos);
660 if (odd)
661 pos_e = 1 - pos_e;
662 }
663 }
665 SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
667 double offset_l = 0;
668 double offset_h = 0;
669 SPObject *child_prev = NULL;
670 for (SPObject *child = sp_object_first_child(vector);
671 child != NULL; child = SP_OBJECT_NEXT(child)) {
672 if (!SP_IS_STOP(child))
673 continue;
674 SPStop *stop = SP_STOP (child);
676 offset_h = stop->offset;
678 if (child_prev) {
680 if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
681 // the summit falls in this interstop, and the radius is small,
682 // so it only affects the ends of this interstop;
683 // distribute the force between the two endstops so that they
684 // get all the painting even if they are not touched by the brush
685 tweak_color (mode, stop->specified_color.v.c, rgb_goal,
686 force * (pos_e - offset_l) / (offset_h - offset_l),
687 do_h, do_s, do_l);
688 tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
689 force * (offset_h - pos_e) / (offset_h - offset_l),
690 do_h, do_s, do_l);
691 SP_OBJECT(stop)->updateRepr();
692 child_prev->updateRepr();
693 break;
694 } else {
695 // wide brush, may affect more than 2 stops,
696 // paint each stop by the force from the profile curve
697 if (offset_l <= pos_e && offset_l > pos_e - r) {
698 tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
699 force * tweak_profile (fabs (pos_e - offset_l), r),
700 do_h, do_s, do_l);
701 child_prev->updateRepr();
702 }
704 if (offset_h >= pos_e && offset_h < pos_e + r) {
705 tweak_color (mode, stop->specified_color.v.c, rgb_goal,
706 force * tweak_profile (fabs (pos_e - offset_h), r),
707 do_h, do_s, do_l);
708 SP_OBJECT(stop)->updateRepr();
709 }
710 }
711 }
713 offset_l = offset_h;
714 child_prev = child;
715 }
716 }
718 bool
719 sp_tweak_color_recursive (guint mode, SPItem *item, SPItem *item_at_point,
720 guint32 fill_goal, bool do_fill,
721 guint32 stroke_goal, bool do_stroke,
722 float opacity_goal, bool do_opacity,
723 NR::Point p, double radius, double force,
724 bool do_h, bool do_s, bool do_l, bool do_o)
725 {
726 bool did = false;
728 if (SP_IS_GROUP(item)) {
729 for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
730 if (SP_IS_ITEM(child)) {
731 if (sp_tweak_color_recursive (mode, SP_ITEM(child), item_at_point,
732 fill_goal, do_fill,
733 stroke_goal, do_stroke,
734 opacity_goal, do_opacity,
735 p, radius, force, do_h, do_s, do_l, do_o));
736 did = true;
737 }
738 }
740 } else {
741 SPStyle *style = SP_OBJECT_STYLE(item);
742 if (!style) {
743 return false;
744 }
745 NR::Maybe<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item),
746 SPItem::GEOMETRIC_BBOX);
747 if (!bbox) {
748 return false;
749 }
751 NR::Rect brush(p - NR::Point(radius, radius), p + NR::Point(radius, radius));
753 NR::Point center = bbox->midpoint();
754 double this_force;
756 // if item == item_at_point, use max force
757 if (item == item_at_point) {
758 this_force = force;
759 // else if no overlap of bbox and brush box, skip:
760 } else if (!bbox->intersects(brush)) {
761 return false;
762 //TODO:
763 // else if object > 1.5 brush: test 4/8/16 points in the brush on hitting the object, choose max
764 //} else if (bbox->maxExtent() > 3 * radius) {
765 //}
766 // else if object > 0.5 brush: test 4 corners of bbox and center on being in the brush, choose max
767 // else if still smaller, then check only the object center:
768 } else {
769 this_force = force * tweak_profile (NR::L2 (p - center), radius);
770 }
772 if (this_force > 0.002) {
774 if (do_fill) {
775 if (style->fill.isPaintserver()) {
776 tweak_colors_in_gradient (item, true, fill_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
777 did = true;
778 } else if (style->fill.isColor()) {
779 tweak_color (mode, style->fill.value.color.v.c, fill_goal, this_force, do_h, do_s, do_l);
780 item->updateRepr();
781 did = true;
782 }
783 }
784 if (do_stroke) {
785 if (style->stroke.isPaintserver()) {
786 tweak_colors_in_gradient (item, false, stroke_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
787 did = true;
788 } else if (style->stroke.isColor()) {
789 tweak_color (mode, style->stroke.value.color.v.c, stroke_goal, this_force, do_h, do_s, do_l);
790 item->updateRepr();
791 did = true;
792 }
793 }
794 if (do_opacity && do_o) {
795 tweak_opacity (mode, &style->opacity, opacity_goal, this_force);
796 }
797 }
798 }
800 return did;
801 }
804 bool
805 sp_tweak_dilate (SPTweakContext *tc, NR::Point event_p, NR::Point p, NR::Point vector)
806 {
807 Inkscape::Selection *selection = sp_desktop_selection(SP_EVENT_CONTEXT(tc)->desktop);
809 if (selection->isEmpty()) {
810 return false;
811 }
813 bool did = false;
814 double radius = get_dilate_radius(tc);
815 double force = get_dilate_force(tc);
816 if (radius == 0 || force == 0) {
817 return false;
818 }
819 double color_force = MIN(sqrt(force)/20.0, 1);
821 SPItem *item_at_point = SP_EVENT_CONTEXT(tc)->desktop->item_at_point(event_p, TRUE);
822 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, "tools.tweak");
823 SPCSSAttr *css = sp_repr_css_attr_inherited(tool_repr, "style");
824 if (tc->mode == TWEAK_MODE_COLORPAINT && !css)
825 return false;
827 bool do_fill = false, do_stroke = false, do_opacity = false;
828 guint32 fill_goal = 0, stroke_goal = 0;
829 float opacity_goal = 1;
831 const gchar *fill_prop = sp_repr_css_property(css, "fill", NULL);
832 if (fill_prop && strcmp(fill_prop, "none")) {
833 do_fill = true;
834 fill_goal = sp_svg_read_color(fill_prop, 0);
835 }
836 const gchar *stroke_prop = sp_repr_css_property(css, "stroke", NULL);
837 if (stroke_prop && strcmp(stroke_prop, "none")) {
838 do_stroke = true;
839 stroke_goal = sp_svg_read_color(stroke_prop, 0);
840 }
841 const gchar *opacity_prop = sp_repr_css_property(css, "opacity", NULL);
842 if (opacity_prop) {
843 do_opacity = true;
844 sp_svg_number_read_f(opacity_prop, &opacity_goal);
845 }
847 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
848 items != NULL;
849 items = items->next) {
851 SPItem *item = (SPItem *) items->data;
853 if (tc->mode == TWEAK_MODE_COLORPAINT || tc->mode == TWEAK_MODE_COLORJITTER) {
854 if (do_fill || do_stroke || do_opacity) {
855 if (sp_tweak_color_recursive (tc->mode, item, item_at_point,
856 fill_goal, do_fill,
857 stroke_goal, do_stroke,
858 opacity_goal, do_opacity,
859 p, radius, color_force, tc->do_h, tc->do_s, tc->do_l, tc->do_o))
860 did = true;
861 }
862 } else {
863 if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, force, tc->fidelity))
864 did = true;
865 }
866 }
868 return did;
869 }
871 void
872 sp_tweak_update_area (SPTweakContext *tc)
873 {
874 double radius = get_dilate_radius(tc);
875 NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(SP_EVENT_CONTEXT(tc)->desktop->point()));
876 sp_canvas_item_affine_absolute(tc->dilate_area, sm);
877 sp_canvas_item_show(tc->dilate_area);
878 }
880 void
881 sp_tweak_switch_mode (SPTweakContext *tc, gint mode)
882 {
883 SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
884 // need to set explicitly, because the prefs may not have changed by the previous
885 tc->mode = mode;
886 sp_tweak_update_cursor (tc, mode);
887 }
889 void
890 sp_tweak_switch_mode_temporarily (SPTweakContext *tc, gint mode)
891 {
892 // Juggling about so that prefs have the old value but tc->mode and the button show new mode:
893 gint now_mode = prefs_get_int_attribute("tools.tweak", "mode", 0);
894 SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
895 // button has changed prefs, restore
896 prefs_set_int_attribute("tools.tweak", "mode", now_mode);
897 // changing prefs changed tc->mode, restore back :)
898 tc->mode = mode;
899 sp_tweak_update_cursor (tc, mode);
900 }
902 gint
903 sp_tweak_context_root_handler(SPEventContext *event_context,
904 GdkEvent *event)
905 {
906 SPTweakContext *tc = SP_TWEAK_CONTEXT(event_context);
907 SPDesktop *desktop = event_context->desktop;
909 gint ret = FALSE;
911 switch (event->type) {
912 case GDK_ENTER_NOTIFY:
913 sp_canvas_item_show(tc->dilate_area);
914 break;
915 case GDK_LEAVE_NOTIFY:
916 sp_canvas_item_hide(tc->dilate_area);
917 break;
918 case GDK_BUTTON_PRESS:
919 if (event->button.button == 1 && !event_context->space_panning) {
921 if (Inkscape::have_viable_layer(desktop, tc->_message_context) == false) {
922 return TRUE;
923 }
925 NR::Point const button_w(event->button.x,
926 event->button.y);
927 NR::Point const button_dt(desktop->w2d(button_w));
928 tc->last_push = desktop->dt2doc(button_dt);
930 sp_tweak_extinput(tc, event);
932 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3);
933 tc->is_drawing = true;
934 tc->is_dilating = true;
935 tc->has_dilated = false;
937 ret = TRUE;
938 }
939 break;
940 case GDK_MOTION_NOTIFY:
941 {
942 NR::Point const motion_w(event->motion.x,
943 event->motion.y);
944 NR::Point motion_dt(desktop->w2d(motion_w));
945 NR::Point motion_doc(desktop->dt2doc(motion_dt));
946 sp_tweak_extinput(tc, event);
948 // draw the dilating cursor
949 double radius = get_dilate_radius(tc);
950 NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(desktop->w2d(motion_w)));
951 sp_canvas_item_affine_absolute(tc->dilate_area, sm);
952 sp_canvas_item_show(tc->dilate_area);
954 guint num = 0;
955 if (!desktop->selection->isEmpty()) {
956 num = g_slist_length((GSList *) desktop->selection->itemList());
957 }
958 if (num == 0) {
959 tc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Nothing selected!</b> Select objects to tweak."));
960 } else {
961 switch (tc->mode) {
962 case TWEAK_MODE_PUSH:
963 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
964 ngettext("<b>Pushing %d</b> selected object",
965 "<b>Pushing %d</b> selected objects", num), num);
966 break;
967 case TWEAK_MODE_SHRINK:
968 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
969 ngettext("<b>Shrinking %d</b> selected object",
970 "<b>Shrinking %d</b> selected objects", num), num);
971 break;
972 case TWEAK_MODE_GROW:
973 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
974 ngettext("<b>Growing %d</b> selected object",
975 "<b>Growing %d</b> selected objects", num), num);
976 break;
977 case TWEAK_MODE_ATTRACT:
978 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
979 ngettext("<b>Attracting %d</b> selected object",
980 "<b>Attracting %d</b> selected objects", num), num);
981 break;
982 case TWEAK_MODE_REPEL:
983 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
984 ngettext("<b>Repelling %d</b> selected object",
985 "<b>Repelling %d</b> selected objects", num), num);
986 break;
987 case TWEAK_MODE_ROUGHEN:
988 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
989 ngettext("<b>Roughening %d</b> selected object",
990 "<b>Roughening %d</b> selected objects", num), num);
991 case TWEAK_MODE_COLORPAINT:
992 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
993 ngettext("<b>Painting %d</b> selected object",
994 "<b>Painting %d</b> selected objects", num), num);
995 break;
996 case TWEAK_MODE_COLORJITTER:
997 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
998 ngettext("<b>Jittering colors in %d</b> selected object",
999 "<b>Jittering colors in %d</b> selected objects", num), num);
1000 break;
1001 }
1002 }
1005 // dilating:
1006 if (tc->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) {
1007 sp_tweak_dilate (tc, motion_w, motion_doc, motion_doc - tc->last_push);
1008 //tc->last_push = motion_doc;
1009 tc->has_dilated = true;
1010 // it's slow, so prevent clogging up with events
1011 gobble_motion_events(GDK_BUTTON1_MASK);
1012 return TRUE;
1013 }
1015 }
1016 break;
1019 case GDK_BUTTON_RELEASE:
1020 {
1021 NR::Point const motion_w(event->button.x, event->button.y);
1022 NR::Point const motion_dt(desktop->w2d(motion_w));
1024 sp_canvas_end_forced_full_redraws(desktop->canvas);
1025 tc->is_drawing = false;
1027 if (tc->is_dilating && event->button.button == 1 && !event_context->space_panning) {
1028 if (!tc->has_dilated) {
1029 // if we did not rub, do a light tap
1030 tc->pressure = 0.03;
1031 sp_tweak_dilate (tc, motion_w, desktop->dt2doc(motion_dt), NR::Point(0,0));
1032 }
1033 tc->is_dilating = false;
1034 tc->has_dilated = false;
1035 switch (tc->mode) {
1036 case TWEAK_MODE_PUSH:
1037 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1038 SP_VERB_CONTEXT_TWEAK, _("Push tweak"));
1039 break;
1040 case TWEAK_MODE_SHRINK:
1041 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1042 SP_VERB_CONTEXT_TWEAK, _("Shrink tweak"));
1043 break;
1044 case TWEAK_MODE_GROW:
1045 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1046 SP_VERB_CONTEXT_TWEAK, _("Grow tweak"));
1047 break;
1048 case TWEAK_MODE_ATTRACT:
1049 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1050 SP_VERB_CONTEXT_TWEAK, _("Attract tweak"));
1051 break;
1052 case TWEAK_MODE_REPEL:
1053 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1054 SP_VERB_CONTEXT_TWEAK, _("Repel tweak"));
1055 break;
1056 case TWEAK_MODE_ROUGHEN:
1057 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1058 SP_VERB_CONTEXT_TWEAK, _("Roughen tweak"));
1059 break;
1060 case TWEAK_MODE_COLORPAINT:
1061 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1062 SP_VERB_CONTEXT_TWEAK, _("Color paint tweak"));
1063 case TWEAK_MODE_COLORJITTER:
1064 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1065 SP_VERB_CONTEXT_TWEAK, _("Color jitter tweak"));
1066 break;
1067 }
1068 }
1069 break;
1070 }
1072 case GDK_KEY_PRESS:
1073 switch (get_group0_keyval (&event->key)) {
1074 case GDK_p:
1075 case GDK_P:
1076 case GDK_1:
1077 if (MOD__SHIFT_ONLY) {
1078 sp_tweak_switch_mode(tc, TWEAK_MODE_PUSH);
1079 ret = TRUE;
1080 }
1081 break;
1082 case GDK_s:
1083 case GDK_S:
1084 case GDK_2:
1085 if (MOD__SHIFT_ONLY) {
1086 sp_tweak_switch_mode(tc, TWEAK_MODE_SHRINK);
1087 ret = TRUE;
1088 }
1089 break;
1090 case GDK_g:
1091 case GDK_G:
1092 case GDK_3:
1093 if (MOD__SHIFT_ONLY) {
1094 sp_tweak_switch_mode(tc, TWEAK_MODE_GROW);
1095 ret = TRUE;
1096 }
1097 break;
1098 case GDK_a:
1099 case GDK_A:
1100 case GDK_4:
1101 if (MOD__SHIFT_ONLY) {
1102 sp_tweak_switch_mode(tc, TWEAK_MODE_ATTRACT);
1103 ret = TRUE;
1104 }
1105 break;
1106 case GDK_e:
1107 case GDK_E:
1108 case GDK_5:
1109 if (MOD__SHIFT_ONLY) {
1110 sp_tweak_switch_mode(tc, TWEAK_MODE_REPEL);
1111 ret = TRUE;
1112 }
1113 break;
1114 case GDK_r:
1115 case GDK_R:
1116 case GDK_6:
1117 if (MOD__SHIFT_ONLY) {
1118 sp_tweak_switch_mode(tc, TWEAK_MODE_ROUGHEN);
1119 ret = TRUE;
1120 }
1121 break;
1122 case GDK_c:
1123 case GDK_C:
1124 case GDK_7:
1125 if (MOD__SHIFT_ONLY) {
1126 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORPAINT);
1127 ret = TRUE;
1128 }
1129 break;
1130 case GDK_j:
1131 case GDK_J:
1132 case GDK_8:
1133 if (MOD__SHIFT_ONLY) {
1134 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORJITTER);
1135 ret = TRUE;
1136 }
1137 break;
1139 case GDK_Up:
1140 case GDK_KP_Up:
1141 if (!MOD__CTRL_ONLY) {
1142 tc->force += 0.05;
1143 if (tc->force > 1.0)
1144 tc->force = 1.0;
1145 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1146 ret = TRUE;
1147 }
1148 break;
1149 case GDK_Down:
1150 case GDK_KP_Down:
1151 if (!MOD__CTRL_ONLY) {
1152 tc->force -= 0.05;
1153 if (tc->force < 0.0)
1154 tc->force = 0.0;
1155 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1156 ret = TRUE;
1157 }
1158 break;
1159 case GDK_Right:
1160 case GDK_KP_Right:
1161 if (!MOD__CTRL_ONLY) {
1162 tc->width += 0.01;
1163 if (tc->width > 1.0)
1164 tc->width = 1.0;
1165 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); // the same spinbutton is for alt+x
1166 sp_tweak_update_area(tc);
1167 ret = TRUE;
1168 }
1169 break;
1170 case GDK_Left:
1171 case GDK_KP_Left:
1172 if (!MOD__CTRL_ONLY) {
1173 tc->width -= 0.01;
1174 if (tc->width < 0.01)
1175 tc->width = 0.01;
1176 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1177 sp_tweak_update_area(tc);
1178 ret = TRUE;
1179 }
1180 break;
1181 case GDK_Home:
1182 case GDK_KP_Home:
1183 tc->width = 0.01;
1184 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1185 sp_tweak_update_area(tc);
1186 ret = TRUE;
1187 break;
1188 case GDK_End:
1189 case GDK_KP_End:
1190 tc->width = 1.0;
1191 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1192 sp_tweak_update_area(tc);
1193 ret = TRUE;
1194 break;
1195 case GDK_x:
1196 case GDK_X:
1197 if (MOD__ALT_ONLY) {
1198 desktop->setToolboxFocusTo ("altx-tweak");
1199 ret = TRUE;
1200 }
1201 break;
1203 case GDK_Control_L:
1204 case GDK_Control_R:
1205 if (MOD__SHIFT) {
1206 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_GROW);
1207 } else {
1208 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SHRINK);
1209 }
1210 break;
1211 case GDK_Shift_L:
1212 case GDK_Shift_R:
1213 if (MOD__CTRL) {
1214 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_GROW);
1215 }
1216 break;
1217 default:
1218 break;
1219 }
1220 break;
1222 case GDK_KEY_RELEASE:
1223 switch (get_group0_keyval(&event->key)) {
1224 case GDK_Control_L:
1225 case GDK_Control_R:
1226 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0));
1227 tc->_message_context->clear();
1228 break;
1229 case GDK_Shift_L:
1230 case GDK_Shift_R:
1231 if (MOD__CTRL) {
1232 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SHRINK);
1233 }
1234 break;
1235 break;
1236 default:
1237 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0));
1238 break;
1239 }
1241 default:
1242 break;
1243 }
1245 if (!ret) {
1246 if (((SPEventContextClass *) parent_class)->root_handler) {
1247 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
1248 }
1249 }
1251 return ret;
1252 }
1255 /*
1256 Local Variables:
1257 mode:c++
1258 c-file-style:"stroustrup"
1259 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1260 indent-tabs-mode:nil
1261 fill-column:99
1262 End:
1263 */
1264 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :