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"
75 #include "tweak-context.h"
77 #define DDC_RED_RGBA 0xff0000ff
79 #define DYNA_MIN_WIDTH 1.0e-6
81 // FIXME: move it to some shared file to be reused by both calligraphy and dropper
82 #define C1 0.552
83 static NArtBpath const hatch_area_circle[] = {
84 { NR_MOVETO, 0, 0, 0, 0, -1, 0 },
85 { NR_CURVETO, -1, C1, -C1, 1, 0, 1 },
86 { NR_CURVETO, C1, 1, 1, C1, 1, 0 },
87 { NR_CURVETO, 1, -C1, C1, -1, 0, -1 },
88 { NR_CURVETO, -C1, -1, -1, -C1, -1, 0 },
89 { NR_END, 0, 0, 0, 0, 0, 0 }
90 };
91 #undef C1
94 static void sp_tweak_context_class_init(SPTweakContextClass *klass);
95 static void sp_tweak_context_init(SPTweakContext *ddc);
96 static void sp_tweak_context_dispose(GObject *object);
98 static void sp_tweak_context_setup(SPEventContext *ec);
99 static void sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
100 static gint sp_tweak_context_root_handler(SPEventContext *ec, GdkEvent *event);
102 static SPEventContextClass *parent_class;
104 GtkType
105 sp_tweak_context_get_type(void)
106 {
107 static GType type = 0;
108 if (!type) {
109 GTypeInfo info = {
110 sizeof(SPTweakContextClass),
111 NULL, NULL,
112 (GClassInitFunc) sp_tweak_context_class_init,
113 NULL, NULL,
114 sizeof(SPTweakContext),
115 4,
116 (GInstanceInitFunc) sp_tweak_context_init,
117 NULL, /* value_table */
118 };
119 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPTweakContext", &info, (GTypeFlags)0);
120 }
121 return type;
122 }
124 static void
125 sp_tweak_context_class_init(SPTweakContextClass *klass)
126 {
127 GObjectClass *object_class = (GObjectClass *) klass;
128 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
130 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
132 object_class->dispose = sp_tweak_context_dispose;
134 event_context_class->setup = sp_tweak_context_setup;
135 event_context_class->set = sp_tweak_context_set;
136 event_context_class->root_handler = sp_tweak_context_root_handler;
137 }
139 static void
140 sp_tweak_context_init(SPTweakContext *tc)
141 {
142 SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
144 event_context->cursor_shape = cursor_push_xpm;
145 event_context->hot_x = 4;
146 event_context->hot_y = 4;
148 /* attributes */
149 tc->dragging = FALSE;
151 tc->width = 0.2;
152 tc->force = 0.2;
153 tc->pressure = TC_DEFAULT_PRESSURE;
155 tc->is_dilating = false;
156 tc->has_dilated = false;
158 tc->do_h = true;
159 tc->do_s = true;
160 tc->do_l = true;
161 tc->do_o = false;
163 new (&tc->style_set_connection) sigc::connection();
164 }
166 static void
167 sp_tweak_context_dispose(GObject *object)
168 {
169 SPTweakContext *tc = SP_TWEAK_CONTEXT(object);
171 tc->style_set_connection.disconnect();
172 tc->style_set_connection.~connection();
174 if (tc->dilate_area) {
175 gtk_object_destroy(GTK_OBJECT(tc->dilate_area));
176 tc->dilate_area = NULL;
177 }
179 if (tc->_message_context) {
180 delete tc->_message_context;
181 }
183 G_OBJECT_CLASS(parent_class)->dispose(object);
184 }
186 void
187 sp_tweak_update_cursor (SPTweakContext *tc, gint mode)
188 {
189 SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
190 switch (mode) {
191 case TWEAK_MODE_PUSH:
192 event_context->cursor_shape = cursor_push_xpm;
193 break;
194 case TWEAK_MODE_SHRINK:
195 event_context->cursor_shape = cursor_thin_xpm;
196 break;
197 case TWEAK_MODE_GROW:
198 event_context->cursor_shape = cursor_thicken_xpm;
199 break;
200 case TWEAK_MODE_ATTRACT:
201 event_context->cursor_shape = cursor_attract_xpm;
202 break;
203 case TWEAK_MODE_REPEL:
204 event_context->cursor_shape = cursor_repel_xpm;
205 break;
206 case TWEAK_MODE_ROUGHEN:
207 event_context->cursor_shape = cursor_roughen_xpm;
208 break;
209 case TWEAK_MODE_COLORPAINT:
210 case TWEAK_MODE_COLORJITTER:
211 event_context->cursor_shape = cursor_color_xpm;
212 break;
213 }
214 sp_event_context_update_cursor(event_context);
215 }
217 static bool
218 sp_tweak_context_style_set(SPCSSAttr const *css, SPTweakContext *tc)
219 {
220 if (tc->mode == TWEAK_MODE_COLORPAINT) { // intercept color setting only in this mode
221 // we cannot store properties with uris
222 css = sp_css_attr_unset_uris ((SPCSSAttr *) css);
224 sp_repr_css_change (inkscape_get_repr (INKSCAPE, "tools.tweak"), (SPCSSAttr *) css, "style");
226 return true;
227 }
228 return false;
229 }
232 static void
233 sp_tweak_context_setup(SPEventContext *ec)
234 {
235 SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
237 if (((SPEventContextClass *) parent_class)->setup)
238 ((SPEventContextClass *) parent_class)->setup(ec);
240 {
241 SPCurve *c = sp_curve_new_from_foreign_bpath(hatch_area_circle);
242 tc->dilate_area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c);
243 sp_curve_unref(c);
244 sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(tc->dilate_area), 0x00000000,(SPWindRule)0);
245 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(tc->dilate_area), 0xff9900ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
246 sp_canvas_item_hide(tc->dilate_area);
247 }
249 sp_event_context_read(ec, "width");
250 sp_event_context_read(ec, "mode");
251 sp_event_context_read(ec, "fidelity");
252 sp_event_context_read(ec, "force");
253 sp_event_context_read(ec, "usepressure");
254 sp_event_context_read(ec, "doh");
255 sp_event_context_read(ec, "dol");
256 sp_event_context_read(ec, "dos");
257 sp_event_context_read(ec, "doo");
259 tc->is_drawing = false;
261 tc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
263 tc->style_set_connection = ec->desktop->connectSetStyle( // catch style-setting signal in this tool
264 sigc::bind(sigc::ptr_fun(&sp_tweak_context_style_set), tc)
265 );
266 }
268 static void
269 sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
270 {
271 SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
273 if (!strcmp(key, "width")) {
274 double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.1 );
275 tc->width = CLAMP(dval, -1000.0, 1000.0);
276 } else if (!strcmp(key, "mode")) {
277 gint64 const dval = ( val ? g_ascii_strtoll (val, NULL, 10) : 0 );
278 tc->mode = dval;
279 sp_tweak_update_cursor(tc, tc->mode);
280 } else if (!strcmp(key, "fidelity")) {
281 double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.0 );
282 tc->fidelity = CLAMP(dval, 0.0, 1.0);
283 } else if (!strcmp(key, "force")) {
284 double const dval = ( val ? g_ascii_strtod (val, NULL) : 1.0 );
285 tc->force = CLAMP(dval, 0, 1.0);
286 } else if (!strcmp(key, "usepressure")) {
287 tc->usepressure = (val && strcmp(val, "0"));
288 } else if (!strcmp(key, "doh")) {
289 tc->do_h = (val && strcmp(val, "0"));
290 } else if (!strcmp(key, "dos")) {
291 tc->do_s = (val && strcmp(val, "0"));
292 } else if (!strcmp(key, "dol")) {
293 tc->do_l = (val && strcmp(val, "0"));
294 } else if (!strcmp(key, "doo")) {
295 tc->do_o = (val && strcmp(val, "0"));
296 }
297 }
299 static void
300 sp_tweak_extinput(SPTweakContext *tc, GdkEvent *event)
301 {
302 if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &tc->pressure))
303 tc->pressure = CLAMP (tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE);
304 else
305 tc->pressure = TC_DEFAULT_PRESSURE;
306 }
308 double
309 get_dilate_radius (SPTweakContext *tc)
310 {
311 // 10 times the pen width:
312 return 500 * tc->width/SP_EVENT_CONTEXT(tc)->desktop->current_zoom();
313 }
315 double
316 get_dilate_force (SPTweakContext *tc)
317 {
318 double force = 8 * (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE)
319 /sqrt(SP_EVENT_CONTEXT(tc)->desktop->current_zoom());
320 if (force > 3) {
321 force += 4 * (force - 3);
322 }
323 return force * tc->force;
324 }
326 bool
327 sp_tweak_dilate_recursive (Inkscape::Selection *selection, SPItem *item, NR::Point p, NR::Point vector, gint mode, double radius, double force, double fidelity)
328 {
329 bool did = false;
331 if (SP_IS_GROUP(item)) {
332 for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
333 if (SP_IS_ITEM(child)) {
334 if (sp_tweak_dilate_recursive (selection, SP_ITEM(child), p, vector, mode, radius, force, fidelity))
335 did = true;
336 }
337 }
339 } else if (SP_IS_PATH(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
341 Inkscape::XML::Node *newrepr = NULL;
342 gint pos = 0;
343 Inkscape::XML::Node *parent = NULL;
344 char const *id = NULL;
345 if (!SP_IS_PATH(item)) {
346 newrepr = sp_selected_item_to_curved_repr(item, 0);
347 if (!newrepr)
348 return false;
350 // remember the position of the item
351 pos = SP_OBJECT_REPR(item)->position();
352 // remember parent
353 parent = SP_OBJECT_REPR(item)->parent();
354 // remember id
355 id = SP_OBJECT_REPR(item)->attribute("id");
356 }
359 // skip those paths whose bboxes are entirely out of reach with our radius
360 NR::Maybe<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item));
361 if (bbox) {
362 bbox->growBy(radius);
363 if (!bbox->contains(p)) {
364 return false;
365 }
366 }
368 Path *orig = Path_for_item(item, false);
369 if (orig == NULL) {
370 return false;
371 }
373 Path *res = new Path;
374 res->SetBackData(false);
376 Shape *theShape = new Shape;
377 Shape *theRes = new Shape;
379 orig->ConvertWithBackData(0.08 - (0.07 * fidelity)); // default 0.059
380 orig->Fill(theShape, 0);
382 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
383 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
384 if (val && strcmp(val, "nonzero") == 0)
385 {
386 theRes->ConvertToShape(theShape, fill_nonZero);
387 }
388 else if (val && strcmp(val, "evenodd") == 0)
389 {
390 theRes->ConvertToShape(theShape, fill_oddEven);
391 }
392 else
393 {
394 theRes->ConvertToShape(theShape, fill_nonZero);
395 }
397 if (NR::L2(vector) != 0)
398 vector = 1/NR::L2(vector) * vector;
400 bool did_this = false;
401 NR::Matrix i2doc(sp_item_i2doc_affine(item));
402 if (mode == TWEAK_MODE_SHRINK || mode == TWEAK_MODE_GROW) {
403 if (theShape->MakeOffset(theRes,
404 mode == TWEAK_MODE_GROW? force : -force,
405 join_straight, 4.0,
406 true, p[NR::X], p[NR::Y], radius, &i2doc) == 0) // 0 means the shape was actually changed
407 did_this = true;
408 } else if (mode == TWEAK_MODE_ATTRACT || mode == TWEAK_MODE_REPEL) {
409 if (theShape->MakeRepel(theRes,
410 mode == TWEAK_MODE_REPEL? force : -force,
411 join_straight, 4.0,
412 true, p[NR::X], p[NR::Y], radius, &i2doc) == 0)
413 did_this = true;
414 } else if (mode == TWEAK_MODE_PUSH) {
415 if (theShape->MakePush(theRes,
416 join_straight, 4.0,
417 true, p, force*2*vector, radius, &i2doc) == 0)
418 did_this = true;
419 } else if (mode == TWEAK_MODE_ROUGHEN) {
420 if (theShape->MakeJitter(theRes,
421 join_straight, 4.0,
422 true, p, force, radius, &i2doc) == 0)
423 did_this = true;
424 }
426 // the rest only makes sense if we actually changed the path
427 if (did_this) {
428 theRes->ConvertToShape(theShape, fill_positive);
430 res->Reset();
431 theRes->ConvertToForme(res);
433 double th_max = 0.6 - 0.59*sqrt(fidelity);
434 double threshold = MAX(th_max, th_max*force);
435 res->ConvertEvenLines(threshold);
436 res->Simplify(threshold);
438 if (newrepr) { // converting to path, need to replace the repr
439 bool is_selected = selection->includes(item);
440 if (is_selected)
441 selection->remove(item);
443 // It's going to resurrect, so we delete without notifying listeners.
444 SP_OBJECT(item)->deleteObject(false);
446 // restore id
447 newrepr->setAttribute("id", id);
448 // add the new repr to the parent
449 parent->appendChild(newrepr);
450 // move to the saved position
451 newrepr->setPosition(pos > 0 ? pos : 0);
453 if (is_selected)
454 selection->add(newrepr);
455 }
457 if (res->descr_cmd.size() > 1) {
458 gchar *str = res->svg_dump_path();
459 if (newrepr) {
460 newrepr->setAttribute("d", str);
461 } else {
462 if (SP_IS_SHAPE(item) && SP_SHAPE(item)->path_effect_href) {
463 SP_OBJECT_REPR(item)->setAttribute("inkscape:original-d", str);
464 } else {
465 SP_OBJECT_REPR(item)->setAttribute("d", str);
466 }
467 }
468 g_free(str);
469 } else {
470 // TODO: if there's 0 or 1 node left, delete this path altogether
471 }
473 if (newrepr) {
474 Inkscape::GC::release(newrepr);
475 newrepr = NULL;
476 }
477 }
479 delete theShape;
480 delete theRes;
481 delete orig;
482 delete res;
484 if (did_this)
485 did = true;
486 }
488 return did;
489 }
491 void
492 tweak_colorpaint (float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
493 {
494 float rgb_g[3];
496 if (!do_h || !do_s || !do_l) {
497 float hsl_g[3];
498 sp_color_rgb_to_hsl_floatv (hsl_g, SP_RGBA32_R_F(goal), SP_RGBA32_G_F(goal), SP_RGBA32_B_F(goal));
499 float hsl_c[3];
500 sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
501 if (!do_h)
502 hsl_g[0] = hsl_c[0];
503 if (!do_s)
504 hsl_g[1] = hsl_c[1];
505 if (!do_l)
506 hsl_g[2] = hsl_c[2];
507 sp_color_hsl_to_rgb_floatv (rgb_g, hsl_g[0], hsl_g[1], hsl_g[2]);
508 } else {
509 rgb_g[0] = SP_RGBA32_R_F(goal);
510 rgb_g[1] = SP_RGBA32_G_F(goal);
511 rgb_g[2] = SP_RGBA32_B_F(goal);
512 }
514 for (int i = 0; i < 3; i++) {
515 double d = rgb_g[i] - color[i];
516 color[i] += d * force;
517 }
518 }
520 void
521 tweak_colorjitter (float *color, double force, bool do_h, bool do_s, bool do_l)
522 {
523 force = force*force; // in [0..1], this makes finer adjustments easier
525 float hsl_c[3];
526 sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
528 if (do_h) {
529 hsl_c[0] += g_random_double_range(-0.5, 0.5) * force;
530 if (hsl_c[0] > 1)
531 hsl_c[0] -= 1;
532 if (hsl_c[0] < 0)
533 hsl_c[0] += 1;
534 }
535 if (do_s) {
536 hsl_c[1] += g_random_double_range(-hsl_c[1], 1 - hsl_c[1]) * force;
537 }
538 if (do_l) {
539 hsl_c[2] += g_random_double_range(-hsl_c[2], 1 - hsl_c[2]) * force;
540 }
542 sp_color_hsl_to_rgb_floatv (color, hsl_c[0], hsl_c[1], hsl_c[2]);
543 }
545 void
546 tweak_color (guint mode, float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
547 {
548 if (mode == TWEAK_MODE_COLORPAINT) {
549 tweak_colorpaint (color, goal, force, do_h, do_s, do_l);
550 } else if (mode == TWEAK_MODE_COLORJITTER) {
551 tweak_colorjitter (color, force, do_h, do_s, do_l);
552 }
553 }
555 void
556 tweak_opacity (guint mode, SPIScale24 *style_opacity, double opacity_goal, double force)
557 {
558 double opacity = SP_SCALE24_TO_FLOAT (style_opacity->value);
560 if (mode == TWEAK_MODE_COLORPAINT) {
561 double d = opacity_goal - opacity;
562 opacity += d * force;
563 } else if (mode == TWEAK_MODE_COLORJITTER) {
564 opacity += g_random_double_range(-opacity, 1 - opacity) * force;
565 }
567 style_opacity->value = SP_SCALE24_FROM_FLOAT(opacity);
568 }
571 double
572 tweak_profile (double dist, double radius)
573 {
574 if (radius == 0)
575 return 0;
576 double x = dist / radius;
577 double alpha = 1;
578 if (x >= 1) {
579 return 0;
580 } else if (x <= 0) {
581 return 1;
582 } else {
583 return (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
584 }
585 }
587 void
588 tweak_colors_in_gradient (SPItem *item, bool fill_or_stroke,
589 guint32 const rgb_goal, NR::Point p_w, double radius, double force, guint mode,
590 bool do_h, bool do_s, bool do_l, bool do_o)
591 {
592 SPGradient *gradient = sp_item_gradient (item, fill_or_stroke);
594 if (!gradient || !SP_IS_GRADIENT(gradient))
595 return;
597 NR::Matrix i2d = sp_item_i2doc_affine (item);
598 NR::Point p = p_w * i2d.inverse();
599 p *= (gradient->gradientTransform).inverse();
600 // now p is in gradient's original coordinates
602 double pos = 0;
603 double r = 0;
604 if (SP_IS_LINEARGRADIENT(gradient)) {
605 SPLinearGradient *lg = SP_LINEARGRADIENT(gradient);
607 NR::Point p1(lg->x1.computed, lg->y1.computed);
608 NR::Point p2(lg->x2.computed, lg->y2.computed);
609 NR::Point pdiff(p2 - p1);
610 double vl = NR::L2(pdiff);
612 // This is the matrix which moves and rotates the gradient line
613 // so it's oriented along the X axis:
614 NR::Matrix norm = NR::Matrix(NR::translate(-p1)) * NR::Matrix(NR::rotate(-atan2(pdiff[NR::Y], pdiff[NR::X])));
616 // Transform the mouse point by it to find out its projection onto the gradient line:
617 NR::Point pnorm = p * norm;
619 // Scale its X coordinate to match the length of the gradient line:
620 pos = pnorm[NR::X] / vl;
621 // Calculate radius in lenfth-of-gradient-line units
622 r = radius / vl;
624 } else if (SP_IS_RADIALGRADIENT(gradient)) {
625 SPRadialGradient *rg = SP_RADIALGRADIENT(gradient);
626 NR::Point c (rg->cx.computed, rg->cy.computed);
627 pos = NR::L2(p - c) / rg->r.computed;
628 r = radius / rg->r.computed;
629 }
631 // Normalize pos to 0..1, taking into accound gradient spread:
632 double pos_e = pos;
633 if (gradient->spread == SP_GRADIENT_SPREAD_PAD) {
634 if (pos > 1)
635 pos_e = 1;
636 if (pos < 0)
637 pos_e = 0;
638 } else if (gradient->spread == SP_GRADIENT_SPREAD_REPEAT) {
639 if (pos > 1 || pos < 0)
640 pos_e = pos - floor(pos);
641 } else if (gradient->spread == SP_GRADIENT_SPREAD_REFLECT) {
642 if (pos > 1 || pos < 0) {
643 bool odd = ((int)(floor(pos)) % 2 == 1);
644 pos_e = pos - floor(pos);
645 if (odd)
646 pos_e = 1 - pos_e;
647 }
648 }
650 SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
652 double offset_l = 0;
653 double offset_h = 0;
654 SPObject *child_prev = NULL;
655 for (SPObject *child = sp_object_first_child(vector);
656 child != NULL; child = SP_OBJECT_NEXT(child)) {
657 if (!SP_IS_STOP(child))
658 continue;
659 SPStop *stop = SP_STOP (child);
661 offset_h = stop->offset;
663 if (child_prev) {
665 if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
666 // the summit falls in this interstop, and the radius is small,
667 // so it only affects the ends of this interstop;
668 // distribute the force between the two endstops so that they
669 // get all the painting even if they are not touched by the brush
670 tweak_color (mode, stop->specified_color.v.c, rgb_goal,
671 force * (pos_e - offset_l) / (offset_h - offset_l),
672 do_h, do_s, do_l);
673 tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
674 force * (offset_h - pos_e) / (offset_h - offset_l),
675 do_h, do_s, do_l);
676 SP_OBJECT(stop)->updateRepr();
677 child_prev->updateRepr();
678 break;
679 } else {
680 // wide brush, may affect more than 2 stops,
681 // paint each stop by the force from the profile curve
682 if (offset_l <= pos_e && offset_l > pos_e - r) {
683 tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
684 force * tweak_profile (fabs (pos_e - offset_l), r),
685 do_h, do_s, do_l);
686 child_prev->updateRepr();
687 }
689 if (offset_h >= pos_e && offset_h < pos_e + r) {
690 tweak_color (mode, stop->specified_color.v.c, rgb_goal,
691 force * tweak_profile (fabs (pos_e - offset_h), r),
692 do_h, do_s, do_l);
693 SP_OBJECT(stop)->updateRepr();
694 }
695 }
696 }
698 offset_l = offset_h;
699 child_prev = child;
700 }
701 }
703 bool
704 sp_tweak_color_recursive (guint mode, SPItem *item, SPItem *item_at_point,
705 guint32 fill_goal, bool do_fill,
706 guint32 stroke_goal, bool do_stroke,
707 float opacity_goal, bool do_opacity,
708 NR::Point p, double radius, double force,
709 bool do_h, bool do_s, bool do_l, bool do_o)
710 {
711 bool did = false;
713 if (SP_IS_GROUP(item)) {
714 for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
715 if (SP_IS_ITEM(child)) {
716 if (sp_tweak_color_recursive (mode, SP_ITEM(child), item_at_point,
717 fill_goal, do_fill,
718 stroke_goal, do_stroke,
719 opacity_goal, do_opacity,
720 p, radius, force, do_h, do_s, do_l, do_o));
721 did = true;
722 }
723 }
725 } else {
726 SPStyle *style = SP_OBJECT_STYLE(item);
727 if (!style) {
728 return false;
729 }
730 NR::Maybe<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item),
731 SPItem::GEOMETRIC_BBOX);
732 if (!bbox) {
733 return false;
734 }
736 NR::Rect brush(p - NR::Point(radius, radius), p + NR::Point(radius, radius));
738 NR::Point center = bbox->midpoint();
739 double this_force;
741 // if item == item_at_point, use max force
742 if (item == item_at_point) {
743 this_force = force;
744 // else if no overlap of bbox and brush box, skip:
745 } else if (!bbox->intersects(brush)) {
746 return false;
747 //TODO:
748 // else if object > 1.5 brush: test 4/8/16 points in the brush on hitting the object, choose max
749 //} else if (bbox->maxExtent() > 3 * radius) {
750 //}
751 // else if object > 0.5 brush: test 4 corners of bbox and center on being in the brush, choose max
752 // else if still smaller, then check only the object center:
753 } else {
754 this_force = force * tweak_profile (NR::L2 (p - center), radius);
755 }
757 if (this_force > 0.002) {
759 if (do_fill) {
760 if (style->fill.isPaintserver()) {
761 tweak_colors_in_gradient (item, true, fill_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
762 did = true;
763 } else if (style->fill.isColor()) {
764 tweak_color (mode, style->fill.value.color.v.c, fill_goal, this_force, do_h, do_s, do_l);
765 item->updateRepr();
766 did = true;
767 }
768 }
769 if (do_stroke) {
770 if (style->stroke.isPaintserver()) {
771 tweak_colors_in_gradient (item, false, stroke_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
772 did = true;
773 } else if (style->stroke.isColor()) {
774 tweak_color (mode, style->stroke.value.color.v.c, stroke_goal, this_force, do_h, do_s, do_l);
775 item->updateRepr();
776 did = true;
777 }
778 }
779 if (do_opacity && do_o) {
780 tweak_opacity (mode, &style->opacity, opacity_goal, this_force);
781 }
782 }
783 }
785 return did;
786 }
789 bool
790 sp_tweak_dilate (SPTweakContext *tc, NR::Point event_p, NR::Point p, NR::Point vector)
791 {
792 Inkscape::Selection *selection = sp_desktop_selection(SP_EVENT_CONTEXT(tc)->desktop);
794 if (selection->isEmpty()) {
795 return false;
796 }
798 bool did = false;
799 double radius = get_dilate_radius(tc);
800 double force = get_dilate_force(tc);
801 if (radius == 0 || force == 0) {
802 return false;
803 }
804 double color_force = MIN(sqrt(force)/20.0, 1);
806 SPItem *item_at_point = SP_EVENT_CONTEXT(tc)->desktop->item_at_point(event_p, TRUE);
807 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, "tools.tweak");
808 SPCSSAttr *css = sp_repr_css_attr_inherited(tool_repr, "style");
809 if (tc->mode == TWEAK_MODE_COLORPAINT && !css)
810 return false;
812 bool do_fill = false, do_stroke = false, do_opacity = false;
813 guint32 fill_goal = 0, stroke_goal = 0;
814 float opacity_goal = 1;
816 const gchar *fill_prop = sp_repr_css_property(css, "fill", NULL);
817 if (fill_prop && strcmp(fill_prop, "none")) {
818 do_fill = true;
819 fill_goal = sp_svg_read_color(fill_prop, 0);
820 }
821 const gchar *stroke_prop = sp_repr_css_property(css, "stroke", NULL);
822 if (stroke_prop && strcmp(stroke_prop, "none")) {
823 do_stroke = true;
824 stroke_goal = sp_svg_read_color(stroke_prop, 0);
825 }
826 const gchar *opacity_prop = sp_repr_css_property(css, "opacity", NULL);
827 if (opacity_prop) {
828 do_opacity = true;
829 sp_svg_number_read_f(opacity_prop, &opacity_goal);
830 }
832 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
833 items != NULL;
834 items = items->next) {
836 SPItem *item = (SPItem *) items->data;
838 if (tc->mode == TWEAK_MODE_COLORPAINT || tc->mode == TWEAK_MODE_COLORJITTER) {
839 if (do_fill || do_stroke || do_opacity) {
840 if (sp_tweak_color_recursive (tc->mode, item, item_at_point,
841 fill_goal, do_fill,
842 stroke_goal, do_stroke,
843 opacity_goal, do_opacity,
844 p, radius, color_force, tc->do_h, tc->do_s, tc->do_l, tc->do_o))
845 did = true;
846 }
847 } else {
848 if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, force, tc->fidelity))
849 did = true;
850 }
851 }
853 return did;
854 }
856 void
857 sp_tweak_update_area (SPTweakContext *tc)
858 {
859 double radius = get_dilate_radius(tc);
860 NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(SP_EVENT_CONTEXT(tc)->desktop->point()));
861 sp_canvas_item_affine_absolute(tc->dilate_area, sm);
862 sp_canvas_item_show(tc->dilate_area);
863 }
865 void
866 sp_tweak_switch_mode (SPTweakContext *tc, gint mode)
867 {
868 SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
869 // need to set explicitly, because the prefs may not have changed by the previous
870 tc->mode = mode;
871 sp_tweak_update_cursor (tc, mode);
872 }
874 void
875 sp_tweak_switch_mode_temporarily (SPTweakContext *tc, gint mode)
876 {
877 // Juggling about so that prefs have the old value but tc->mode and the button show new mode:
878 gint now_mode = prefs_get_int_attribute("tools.tweak", "mode", 0);
879 SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
880 // button has changed prefs, restore
881 prefs_set_int_attribute("tools.tweak", "mode", now_mode);
882 // changing prefs changed tc->mode, restore back :)
883 tc->mode = mode;
884 sp_tweak_update_cursor (tc, mode);
885 }
887 gint
888 sp_tweak_context_root_handler(SPEventContext *event_context,
889 GdkEvent *event)
890 {
891 SPTweakContext *tc = SP_TWEAK_CONTEXT(event_context);
892 SPDesktop *desktop = event_context->desktop;
894 gint ret = FALSE;
896 switch (event->type) {
897 case GDK_ENTER_NOTIFY:
898 sp_canvas_item_show(tc->dilate_area);
899 break;
900 case GDK_LEAVE_NOTIFY:
901 sp_canvas_item_hide(tc->dilate_area);
902 break;
903 case GDK_BUTTON_PRESS:
904 if (event->button.button == 1 && !event_context->space_panning) {
906 if (Inkscape::have_viable_layer(desktop, tc->_message_context) == false) {
907 return TRUE;
908 }
910 NR::Point const button_w(event->button.x,
911 event->button.y);
912 NR::Point const button_dt(desktop->w2d(button_w));
913 tc->last_push = desktop->dt2doc(button_dt);
915 sp_tweak_extinput(tc, event);
917 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3);
918 tc->is_drawing = true;
919 tc->is_dilating = true;
920 tc->has_dilated = false;
922 ret = TRUE;
923 }
924 break;
925 case GDK_MOTION_NOTIFY:
926 {
927 NR::Point const motion_w(event->motion.x,
928 event->motion.y);
929 NR::Point motion_dt(desktop->w2d(motion_w));
930 NR::Point motion_doc(desktop->dt2doc(motion_dt));
931 sp_tweak_extinput(tc, event);
933 // draw the dilating cursor
934 double radius = get_dilate_radius(tc);
935 NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(desktop->w2d(motion_w)));
936 sp_canvas_item_affine_absolute(tc->dilate_area, sm);
937 sp_canvas_item_show(tc->dilate_area);
939 guint num = 0;
940 if (!desktop->selection->isEmpty()) {
941 num = g_slist_length((GSList *) desktop->selection->itemList());
942 }
943 if (num == 0) {
944 tc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Nothing selected!</b> Select objects to tweak."));
945 } else {
946 switch (tc->mode) {
947 case TWEAK_MODE_PUSH:
948 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
949 ngettext("<b>Pushing %d</b> selected object",
950 "<b>Pushing %d</b> selected objects", num), num);
951 break;
952 case TWEAK_MODE_SHRINK:
953 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
954 ngettext("<b>Shrinking %d</b> selected object",
955 "<b>Shrinking %d</b> selected objects", num), num);
956 break;
957 case TWEAK_MODE_GROW:
958 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
959 ngettext("<b>Growing %d</b> selected object",
960 "<b>Growing %d</b> selected objects", num), num);
961 break;
962 case TWEAK_MODE_ATTRACT:
963 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
964 ngettext("<b>Attracting %d</b> selected object",
965 "<b>Attracting %d</b> selected objects", num), num);
966 break;
967 case TWEAK_MODE_REPEL:
968 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
969 ngettext("<b>Repelling %d</b> selected object",
970 "<b>Repelling %d</b> selected objects", num), num);
971 break;
972 case TWEAK_MODE_ROUGHEN:
973 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
974 ngettext("<b>Roughening %d</b> selected object",
975 "<b>Roughening %d</b> selected objects", num), num);
976 case TWEAK_MODE_COLORPAINT:
977 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
978 ngettext("<b>Painting %d</b> selected object",
979 "<b>Painting %d</b> selected objects", num), num);
980 break;
981 case TWEAK_MODE_COLORJITTER:
982 tc->_message_context->setF(Inkscape::NORMAL_MESSAGE,
983 ngettext("<b>Jittering colors in %d</b> selected object",
984 "<b>Jittering colors in %d</b> selected objects", num), num);
985 break;
986 }
987 }
990 // dilating:
991 if (tc->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) {
992 sp_tweak_dilate (tc, motion_w, motion_doc, motion_doc - tc->last_push);
993 //tc->last_push = motion_doc;
994 tc->has_dilated = true;
995 // it's slow, so prevent clogging up with events
996 gobble_motion_events(GDK_BUTTON1_MASK);
997 return TRUE;
998 }
1000 }
1001 break;
1004 case GDK_BUTTON_RELEASE:
1005 {
1006 NR::Point const motion_w(event->button.x, event->button.y);
1007 NR::Point const motion_dt(desktop->w2d(motion_w));
1009 sp_canvas_end_forced_full_redraws(desktop->canvas);
1010 tc->is_drawing = false;
1012 if (tc->is_dilating && event->button.button == 1 && !event_context->space_panning) {
1013 if (!tc->has_dilated) {
1014 // if we did not rub, do a light tap
1015 tc->pressure = 0.03;
1016 sp_tweak_dilate (tc, motion_w, desktop->dt2doc(motion_dt), NR::Point(0,0));
1017 }
1018 tc->is_dilating = false;
1019 tc->has_dilated = false;
1020 switch (tc->mode) {
1021 case TWEAK_MODE_PUSH:
1022 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1023 SP_VERB_CONTEXT_TWEAK, _("Push tweak"));
1024 break;
1025 case TWEAK_MODE_SHRINK:
1026 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1027 SP_VERB_CONTEXT_TWEAK, _("Shrink tweak"));
1028 break;
1029 case TWEAK_MODE_GROW:
1030 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1031 SP_VERB_CONTEXT_TWEAK, _("Grow tweak"));
1032 break;
1033 case TWEAK_MODE_ATTRACT:
1034 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1035 SP_VERB_CONTEXT_TWEAK, _("Attract tweak"));
1036 break;
1037 case TWEAK_MODE_REPEL:
1038 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1039 SP_VERB_CONTEXT_TWEAK, _("Repel tweak"));
1040 break;
1041 case TWEAK_MODE_ROUGHEN:
1042 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1043 SP_VERB_CONTEXT_TWEAK, _("Roughen tweak"));
1044 break;
1045 case TWEAK_MODE_COLORPAINT:
1046 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1047 SP_VERB_CONTEXT_TWEAK, _("Color paint tweak"));
1048 case TWEAK_MODE_COLORJITTER:
1049 sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1050 SP_VERB_CONTEXT_TWEAK, _("Color jitter tweak"));
1051 break;
1052 }
1053 }
1054 break;
1055 }
1057 case GDK_KEY_PRESS:
1058 switch (get_group0_keyval (&event->key)) {
1059 case GDK_p:
1060 case GDK_P:
1061 case GDK_1:
1062 if (MOD__SHIFT_ONLY) {
1063 sp_tweak_switch_mode(tc, TWEAK_MODE_PUSH);
1064 ret = TRUE;
1065 }
1066 break;
1067 case GDK_s:
1068 case GDK_S:
1069 case GDK_2:
1070 if (MOD__SHIFT_ONLY) {
1071 sp_tweak_switch_mode(tc, TWEAK_MODE_SHRINK);
1072 ret = TRUE;
1073 }
1074 break;
1075 case GDK_g:
1076 case GDK_G:
1077 case GDK_3:
1078 if (MOD__SHIFT_ONLY) {
1079 sp_tweak_switch_mode(tc, TWEAK_MODE_GROW);
1080 ret = TRUE;
1081 }
1082 break;
1083 case GDK_a:
1084 case GDK_A:
1085 case GDK_4:
1086 if (MOD__SHIFT_ONLY) {
1087 sp_tweak_switch_mode(tc, TWEAK_MODE_ATTRACT);
1088 ret = TRUE;
1089 }
1090 break;
1091 case GDK_e:
1092 case GDK_E:
1093 case GDK_5:
1094 if (MOD__SHIFT_ONLY) {
1095 sp_tweak_switch_mode(tc, TWEAK_MODE_REPEL);
1096 ret = TRUE;
1097 }
1098 break;
1099 case GDK_r:
1100 case GDK_R:
1101 case GDK_6:
1102 if (MOD__SHIFT_ONLY) {
1103 sp_tweak_switch_mode(tc, TWEAK_MODE_ROUGHEN);
1104 ret = TRUE;
1105 }
1106 break;
1107 case GDK_c:
1108 case GDK_C:
1109 case GDK_7:
1110 if (MOD__SHIFT_ONLY) {
1111 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORPAINT);
1112 ret = TRUE;
1113 }
1114 break;
1115 case GDK_j:
1116 case GDK_J:
1117 case GDK_8:
1118 if (MOD__SHIFT_ONLY) {
1119 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORJITTER);
1120 ret = TRUE;
1121 }
1122 break;
1124 case GDK_Up:
1125 case GDK_KP_Up:
1126 if (!MOD__CTRL_ONLY) {
1127 tc->force += 0.05;
1128 if (tc->force > 1.0)
1129 tc->force = 1.0;
1130 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1131 ret = TRUE;
1132 }
1133 break;
1134 case GDK_Down:
1135 case GDK_KP_Down:
1136 if (!MOD__CTRL_ONLY) {
1137 tc->force -= 0.05;
1138 if (tc->force < 0.0)
1139 tc->force = 0.0;
1140 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1141 ret = TRUE;
1142 }
1143 break;
1144 case GDK_Right:
1145 case GDK_KP_Right:
1146 if (!MOD__CTRL_ONLY) {
1147 tc->width += 0.01;
1148 if (tc->width > 1.0)
1149 tc->width = 1.0;
1150 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); // the same spinbutton is for alt+x
1151 sp_tweak_update_area(tc);
1152 ret = TRUE;
1153 }
1154 break;
1155 case GDK_Left:
1156 case GDK_KP_Left:
1157 if (!MOD__CTRL_ONLY) {
1158 tc->width -= 0.01;
1159 if (tc->width < 0.01)
1160 tc->width = 0.01;
1161 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1162 sp_tweak_update_area(tc);
1163 ret = TRUE;
1164 }
1165 break;
1166 case GDK_Home:
1167 case GDK_KP_Home:
1168 tc->width = 0.01;
1169 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1170 sp_tweak_update_area(tc);
1171 ret = TRUE;
1172 break;
1173 case GDK_End:
1174 case GDK_KP_End:
1175 tc->width = 1.0;
1176 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1177 sp_tweak_update_area(tc);
1178 ret = TRUE;
1179 break;
1180 case GDK_x:
1181 case GDK_X:
1182 if (MOD__ALT_ONLY) {
1183 desktop->setToolboxFocusTo ("altx-tweak");
1184 ret = TRUE;
1185 }
1186 break;
1188 case GDK_Control_L:
1189 case GDK_Control_R:
1190 if (MOD__SHIFT) {
1191 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_GROW);
1192 } else {
1193 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SHRINK);
1194 }
1195 break;
1196 case GDK_Shift_L:
1197 case GDK_Shift_R:
1198 if (MOD__CTRL) {
1199 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_GROW);
1200 }
1201 break;
1202 default:
1203 break;
1204 }
1205 break;
1207 case GDK_KEY_RELEASE:
1208 switch (get_group0_keyval(&event->key)) {
1209 case GDK_Control_L:
1210 case GDK_Control_R:
1211 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0));
1212 tc->_message_context->clear();
1213 break;
1214 case GDK_Shift_L:
1215 case GDK_Shift_R:
1216 if (MOD__CTRL) {
1217 sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SHRINK);
1218 }
1219 break;
1220 break;
1221 default:
1222 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0));
1223 break;
1224 }
1226 default:
1227 break;
1228 }
1230 if (!ret) {
1231 if (((SPEventContextClass *) parent_class)->root_handler) {
1232 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
1233 }
1234 }
1236 return ret;
1237 }
1240 /*
1241 Local Variables:
1242 mode:c++
1243 c-file-style:"stroustrup"
1244 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1245 indent-tabs-mode:nil
1246 fill-column:99
1247 End:
1248 */
1249 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :