1 #define __SP_FLOOD_CONTEXT_C__
3 /*
4 * Flood fill drawing context
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 * John Bintz <jcoswell@coswellproductions.org>
10 *
11 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
12 * Copyright (C) 2000-2005 authors
13 * Copyright (C) 2000-2001 Ximian, Inc.
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #include "config.h"
20 #include <gdk/gdkkeysyms.h>
21 #include <queue>
22 #include <deque>
24 #include "macros.h"
25 #include "display/sp-canvas.h"
26 #include "document.h"
27 #include "sp-namedview.h"
28 #include "sp-object.h"
29 #include "sp-rect.h"
30 #include "selection.h"
31 #include "desktop-handles.h"
32 #include "desktop.h"
33 #include "desktop-style.h"
34 #include "message-stack.h"
35 #include "message-context.h"
36 #include "pixmaps/cursor-paintbucket.xpm"
37 #include "flood-context.h"
38 #include "sp-metrics.h"
39 #include <glibmm/i18n.h>
40 #include "object-edit.h"
41 #include "xml/repr.h"
42 #include "xml/node-event-vector.h"
43 #include "prefs-utils.h"
44 #include "context-fns.h"
45 #include "rubberband.h"
47 #include "display/nr-arena-item.h"
48 #include "display/nr-arena.h"
49 #include "display/nr-arena-image.h"
50 #include "display/canvas-arena.h"
51 #include "libnr/nr-pixops.h"
52 #include "libnr/nr-matrix-translate-ops.h"
53 #include "libnr/nr-scale-ops.h"
54 #include "libnr/nr-scale-translate-ops.h"
55 #include "libnr/nr-translate-matrix-ops.h"
56 #include "libnr/nr-translate-scale-ops.h"
57 #include "libnr/nr-matrix-ops.h"
58 #include "sp-item.h"
59 #include "sp-root.h"
60 #include "sp-defs.h"
61 #include "sp-path.h"
62 #include "splivarot.h"
63 #include "livarot/Path.h"
64 #include "livarot/Shape.h"
65 #include "libnr/n-art-bpath.h"
66 #include "svg/svg.h"
67 #include "color.h"
69 #include "trace/trace.h"
70 #include "trace/potrace/inkscape-potrace.h"
72 static void sp_flood_context_class_init(SPFloodContextClass *klass);
73 static void sp_flood_context_init(SPFloodContext *flood_context);
74 static void sp_flood_context_dispose(GObject *object);
76 static void sp_flood_context_setup(SPEventContext *ec);
78 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event);
79 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
81 static void sp_flood_finish(SPFloodContext *rc);
83 static SPEventContextClass *parent_class;
86 GtkType sp_flood_context_get_type()
87 {
88 static GType type = 0;
89 if (!type) {
90 GTypeInfo info = {
91 sizeof(SPFloodContextClass),
92 NULL, NULL,
93 (GClassInitFunc) sp_flood_context_class_init,
94 NULL, NULL,
95 sizeof(SPFloodContext),
96 4,
97 (GInstanceInitFunc) sp_flood_context_init,
98 NULL, /* value_table */
99 };
100 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPFloodContext", &info, (GTypeFlags) 0);
101 }
102 return type;
103 }
105 static void sp_flood_context_class_init(SPFloodContextClass *klass)
106 {
107 GObjectClass *object_class = (GObjectClass *) klass;
108 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
110 parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
112 object_class->dispose = sp_flood_context_dispose;
114 event_context_class->setup = sp_flood_context_setup;
115 event_context_class->root_handler = sp_flood_context_root_handler;
116 event_context_class->item_handler = sp_flood_context_item_handler;
117 }
119 static void sp_flood_context_init(SPFloodContext *flood_context)
120 {
121 SPEventContext *event_context = SP_EVENT_CONTEXT(flood_context);
123 event_context->cursor_shape = cursor_paintbucket_xpm;
124 event_context->hot_x = 11;
125 event_context->hot_y = 30;
126 event_context->xp = 0;
127 event_context->yp = 0;
128 event_context->tolerance = 4;
129 event_context->within_tolerance = false;
130 event_context->item_to_select = NULL;
132 event_context->shape_repr = NULL;
133 event_context->shape_knot_holder = NULL;
135 flood_context->item = NULL;
137 new (&flood_context->sel_changed_connection) sigc::connection();
138 }
140 static void sp_flood_context_dispose(GObject *object)
141 {
142 SPFloodContext *rc = SP_FLOOD_CONTEXT(object);
143 SPEventContext *ec = SP_EVENT_CONTEXT(object);
145 rc->sel_changed_connection.disconnect();
146 rc->sel_changed_connection.~connection();
148 /* fixme: This is necessary because we do not grab */
149 if (rc->item) {
150 sp_flood_finish(rc);
151 }
153 if (ec->shape_repr) { // remove old listener
154 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
155 Inkscape::GC::release(ec->shape_repr);
156 ec->shape_repr = 0;
157 }
159 if (rc->_message_context) {
160 delete rc->_message_context;
161 }
163 G_OBJECT_CLASS(parent_class)->dispose(object);
164 }
166 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
167 NULL, /* child_added */
168 NULL, /* child_removed */
169 ec_shape_event_attr_changed,
170 NULL, /* content_changed */
171 NULL /* order_changed */
172 };
174 /**
175 \brief Callback that processes the "changed" signal on the selection;
176 destroys old and creates new knotholder
177 */
178 void sp_flood_context_selection_changed(Inkscape::Selection *selection, gpointer data)
179 {
180 SPFloodContext *rc = SP_FLOOD_CONTEXT(data);
181 SPEventContext *ec = SP_EVENT_CONTEXT(rc);
183 if (ec->shape_repr) { // remove old listener
184 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
185 Inkscape::GC::release(ec->shape_repr);
186 ec->shape_repr = 0;
187 }
189 SPItem *item = selection->singleItem();
190 if (item) {
191 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
192 if (shape_repr) {
193 ec->shape_repr = shape_repr;
194 Inkscape::GC::anchor(shape_repr);
195 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
196 }
197 }
198 }
200 static void sp_flood_context_setup(SPEventContext *ec)
201 {
202 SPFloodContext *rc = SP_FLOOD_CONTEXT(ec);
204 if (((SPEventContextClass *) parent_class)->setup) {
205 ((SPEventContextClass *) parent_class)->setup(ec);
206 }
208 SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
209 if (item) {
210 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
211 if (shape_repr) {
212 ec->shape_repr = shape_repr;
213 Inkscape::GC::anchor(shape_repr);
214 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
215 }
216 }
218 rc->sel_changed_connection.disconnect();
219 rc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
220 sigc::bind(sigc::ptr_fun(&sp_flood_context_selection_changed), (gpointer)rc)
221 );
223 rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
224 }
226 static void
227 merge_pixel_with_background (unsigned char *orig, unsigned char *bg,
228 unsigned char *base)
229 {
230 for (int i = 0; i < 3; i++) {
231 base[i] = (255 * (255 - bg[3])) / 255 + (bg[i] * bg[3]) / 255;
232 base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255;
233 }
234 base[3] = 255;
235 }
237 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) {
238 return px + (x + y * width) * 4;
239 }
241 enum PaintBucketChannels {
242 FLOOD_CHANNELS_RGB,
243 FLOOD_CHANNELS_R,
244 FLOOD_CHANNELS_G,
245 FLOOD_CHANNELS_B,
246 FLOOD_CHANNELS_H,
247 FLOOD_CHANNELS_S,
248 FLOOD_CHANNELS_L,
249 FLOOD_CHANNELS_ALPHA
250 };
252 GList * flood_channels_dropdown_items_list() {
253 GList *glist = NULL;
255 glist = g_list_append (glist, _("Visible Colors"));
256 glist = g_list_append (glist, _("Red"));
257 glist = g_list_append (glist, _("Green"));
258 glist = g_list_append (glist, _("Blue"));
259 glist = g_list_append (glist, _("Hue"));
260 glist = g_list_append (glist, _("Saturation"));
261 glist = g_list_append (glist, _("Lightness"));
262 glist = g_list_append (glist, _("Alpha"));
264 return glist;
265 }
267 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int threshold, PaintBucketChannels method) {
268 int diff = 0;
269 float hsl_check[3], hsl_orig[3];
271 if ((method == FLOOD_CHANNELS_H) ||
272 (method == FLOOD_CHANNELS_S) ||
273 (method == FLOOD_CHANNELS_L)) {
274 sp_color_rgb_to_hsl_floatv(hsl_check, check[0] / 255.0, check[1] / 255.0, check[2] / 255.0);
275 sp_color_rgb_to_hsl_floatv(hsl_orig, orig[0] / 255.0, orig[1] / 255.0, orig[2] / 255.0);
276 }
278 switch (method) {
279 case FLOOD_CHANNELS_ALPHA:
280 return ((int)abs(check[3] - orig[3]) <= threshold);
281 case FLOOD_CHANNELS_R:
282 return ((int)abs(check[0] - orig[0]) <= threshold);
283 case FLOOD_CHANNELS_G:
284 return ((int)abs(check[1] - orig[1]) <= threshold);
285 case FLOOD_CHANNELS_B:
286 return ((int)abs(check[2] - orig[2]) <= threshold);
287 case FLOOD_CHANNELS_RGB:
288 unsigned char merged_orig[4];
289 unsigned char merged_check[4];
291 merge_pixel_with_background(orig, dtc, merged_orig);
292 merge_pixel_with_background(check, dtc, merged_check);
294 for (int i = 0; i < 3; i++) {
295 diff += (int)abs(merged_check[i] - merged_orig[i]);
296 }
297 return ((diff / 3) <= ((threshold * 3) / 4));
299 case FLOOD_CHANNELS_H:
300 return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold);
301 case FLOOD_CHANNELS_S:
302 return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold);
303 case FLOOD_CHANNELS_L:
304 return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold);
305 }
307 return false;
308 }
310 static bool try_add_to_queue(std::deque<NR::Point> *fill_queue, guchar *px, guchar *trace_px, unsigned char *orig, unsigned char *dtc, int x, int y, int width, int threshold, PaintBucketChannels method, bool fill_switch) {
311 unsigned char *t = get_pixel(px, x, y, width);
312 if (compare_pixels(t, orig, dtc, threshold, method)) {
313 unsigned char *trace_t = get_pixel(trace_px, x, y, width);
314 if (trace_t[3] != 255 && trace_t[0] != 255) {
315 if (fill_switch) {
316 fill_queue->push_back(NR::Point(x, y));
317 trace_t[0] = 255;
318 }
319 }
320 return false;
321 }
322 return true;
323 }
325 static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform, bool union_with_selection) {
326 SPDocument *document = sp_desktop_document(desktop);
328 Inkscape::Trace::Potrace::PotraceTracingEngine pte;
330 pte.setTraceType(Inkscape::Trace::Potrace::TRACE_BRIGHTNESS);
331 pte.setInvert(false);
333 Glib::RefPtr<Gdk::Pixbuf> pixbuf = Glib::wrap(px, true);
335 std::vector<Inkscape::Trace::TracingEngineResult> results = pte.trace(pixbuf);
337 Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr;
338 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
340 long totalNodeCount = 0L;
342 double offset = prefs_get_double_attribute("tools.paintbucket", "offset", 0.0);
344 for (unsigned int i=0 ; i<results.size() ; i++) {
345 Inkscape::Trace::TracingEngineResult result = results[i];
346 totalNodeCount += result.getNodeCount();
348 Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
349 /* Set style */
350 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
352 NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
353 Path *path = bpath_to_Path(bpath);
354 g_free(bpath);
356 if (offset != 0) {
358 Shape *path_shape = new Shape();
360 path->ConvertWithBackData(0.03);
361 path->Fill(path_shape, 0);
362 delete path;
364 Shape *expanded_path_shape = new Shape();
366 expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
367 path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
368 expanded_path_shape->ConvertToShape(path_shape, fill_positive);
370 Path *expanded_path = new Path();
372 expanded_path->Reset();
373 expanded_path_shape->ConvertToForme(expanded_path);
374 expanded_path->ConvertEvenLines(1.0);
375 expanded_path->Simplify(1.0);
377 delete path_shape;
378 delete expanded_path_shape;
380 gchar *str = expanded_path->svg_dump_path();
381 if (str && *str) {
382 pathRepr->setAttribute("d", str);
383 g_free(str);
384 } else {
385 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
386 Inkscape::GC::release(pathRepr);
387 g_free(str);
388 return;
389 }
391 delete expanded_path;
393 } else {
394 gchar *str = path->svg_dump_path();
395 delete path;
396 pathRepr->setAttribute("d", str);
397 g_free(str);
398 }
400 layer_repr->addChild(pathRepr, NULL);
402 SPObject *reprobj = document->getObjectByRepr(pathRepr);
403 if (reprobj) {
404 sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL);
406 // premultiply the item transform by the accumulated parent transform in the paste layer
407 NR::Matrix local = sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()));
408 if (!local.test_identity()) {
409 gchar const *t_str = pathRepr->attribute("transform");
410 NR::Matrix item_t (NR::identity());
411 if (t_str)
412 sp_svg_transform_read(t_str, &item_t);
413 item_t *= local.inverse();
414 // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
415 gchar *affinestr=sp_svg_transform_write(item_t);
416 pathRepr->setAttribute("transform", affinestr);
417 g_free(affinestr);
418 }
420 Inkscape::Selection *selection = sp_desktop_selection(desktop);
422 pathRepr->setPosition(-1);
424 if (union_with_selection) {
425 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created and unioned with selection."), sp_nodes_in_path(SP_PATH(reprobj)));
426 selection->add(reprobj);
427 sp_selected_path_union_skip_undo();
428 } else {
429 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
430 selection->set(reprobj);
431 }
433 }
435 Inkscape::GC::release(pathRepr);
437 }
438 }
440 struct bitmap_coords_info {
441 bool is_left;
442 int x;
443 int y;
444 int y_limit;
445 int width;
446 int threshold;
447 PaintBucketChannels method;
448 unsigned char *dtc;
449 bool top_fill;
450 bool bottom_fill;
451 NR::Rect bbox;
452 NR::Rect screen;
453 };
455 enum ScanlineCheckResult {
456 SCANLINE_CHECK_OK,
457 SCANLINE_CHECK_ABORTED,
458 SCANLINE_CHECK_BOUNDARY
459 };
461 static ScanlineCheckResult perform_bitmap_scanline_check(std::deque<NR::Point> *fill_queue, guchar *px, guchar *trace_px, unsigned char *orig_color, bitmap_coords_info bci) {
462 bool aborted = false;
463 bool reached_screen_boundary = false;
464 bool ok;
466 bool keep_tracing;
467 unsigned char *t, *trace_t;
469 do {
470 ok = false;
471 if (bci.is_left) {
472 keep_tracing = (bci.x >= 0);
473 } else {
474 keep_tracing = (bci.x < bci.width);
475 }
477 if (keep_tracing) {
478 t = get_pixel(px, bci.x, bci.y, bci.width);
479 if (compare_pixels(t, orig_color, bci.dtc, bci.threshold, bci.method)) {
480 for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
481 trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
482 trace_t[3] = 255;
483 if (bci.y > 0) {
484 bci.top_fill = try_add_to_queue(fill_queue, px, trace_px, orig_color, bci.dtc, bci.x, bci.y - 1, bci.width, bci.threshold, bci.method, bci.top_fill);
485 }
486 if (bci.y < bci.y_limit) {
487 bci.bottom_fill = try_add_to_queue(fill_queue, px, trace_px, orig_color, bci.dtc, bci.x, bci.y + 1, bci.width, bci.threshold, bci.method, bci.bottom_fill);
488 }
489 if (bci.is_left) {
490 bci.x--;
491 } else {
492 bci.x++;
493 }
494 ok = true;
495 }
496 } else {
497 if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
498 aborted = true; break;
499 } else {
500 reached_screen_boundary = true;
501 }
502 }
503 } while (ok);
505 if (aborted) { return SCANLINE_CHECK_ABORTED; }
506 if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
507 return SCANLINE_CHECK_OK;
508 }
510 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event, bool union_with_selection, bool is_point_fill, bool is_touch_fill) {
511 SPDesktop *desktop = event_context->desktop;
512 SPDocument *document = sp_desktop_document(desktop);
514 /* Create new arena */
515 NRArena *arena = NRArena::create();
516 unsigned dkey = sp_item_display_key_new(1);
518 sp_document_ensure_up_to_date (document);
520 SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document));
521 NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
523 if (!bbox) {
524 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
525 return;
526 }
528 double zoom_scale = desktop->current_zoom();
529 double padding = 1.6;
531 NR::Rect screen = desktop->get_display_area();
533 int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
534 int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
536 NR::Point origin(screen.min()[NR::X],
537 sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
539 origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
540 origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
542 NR::scale scale(zoom_scale, zoom_scale);
543 NR::Matrix affine = scale * NR::translate(-origin * scale);
545 /* Create ArenaItems and set transform */
546 NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
547 nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
549 NRGC gc(NULL);
550 nr_matrix_set_identity(&gc.transform);
552 NRRectL final_bbox;
553 final_bbox.x0 = 0;
554 final_bbox.y0 = 0;//row;
555 final_bbox.x1 = width;
556 final_bbox.y1 = height;//row + num_rows;
558 nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
560 guchar *px = g_new(guchar, 4 * width * height);
562 NRPixBlock B;
563 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
564 final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
565 px, 4 * width, FALSE, FALSE );
567 SPNamedView *nv = sp_desktop_namedview(desktop);
568 unsigned long bgcolor = nv->pagecolor;
570 unsigned char dtc[4];
571 dtc[0] = NR_RGBA32_R(bgcolor);
572 dtc[1] = NR_RGBA32_G(bgcolor);
573 dtc[2] = NR_RGBA32_B(bgcolor);
574 dtc[3] = NR_RGBA32_A(bgcolor);
576 for (int fy = 0; fy < height; fy++) {
577 guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
578 for (int fx = 0; fx < width; fx++) {
579 for (int i = 0; i < 4; i++) {
580 *p++ = dtc[i];
581 }
582 }
583 }
585 nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
586 nr_pixblock_release(&B);
588 // Hide items
589 sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey);
591 nr_arena_item_unref(root);
592 nr_object_unref((NRObject *) arena);
594 guchar *trace_px = g_new(guchar, 4 * width * height);
595 memset(trace_px, 0x00, 4 * width * height);
597 std::deque<NR::Point> fill_queue;
598 std::queue<NR::Point> color_queue;
600 std::vector<NR::Point> fill_points;
602 if (is_point_fill) {
603 fill_points.push_back(NR::Point(event->button.x, event->button.y));
604 } else {
605 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
606 fill_points = r->getPoints();
607 }
609 for (unsigned int i = 0; i < fill_points.size(); i++) {
610 NR::Point pw = NR::Point(fill_points[i][NR::X] / zoom_scale, sp_document_height(document) + (fill_points[i][NR::Y] / zoom_scale)) * affine;
612 pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
613 pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
615 if (is_touch_fill) {
616 if (i == 0) {
617 color_queue.push(pw);
618 } else {
619 fill_queue.push_back(pw);
620 }
621 } else {
622 color_queue.push(pw);
623 }
624 }
626 bool aborted = false;
627 int y_limit = height - 1;
629 PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
630 int threshold = prefs_get_int_attribute_limited("tools.paintbucket", "threshold", 1, 0, 100);
632 switch(method) {
633 case FLOOD_CHANNELS_ALPHA:
634 case FLOOD_CHANNELS_RGB:
635 case FLOOD_CHANNELS_R:
636 case FLOOD_CHANNELS_G:
637 case FLOOD_CHANNELS_B:
638 threshold = (255 * threshold) / 100;
639 break;
640 case FLOOD_CHANNELS_H:
641 case FLOOD_CHANNELS_S:
642 case FLOOD_CHANNELS_L:
643 break;
644 }
646 bool reached_screen_boundary = false;
648 bitmap_coords_info bci;
650 bci.y_limit = y_limit;
651 bci.width = width;
652 bci.threshold = threshold;
653 bci.method = method;
654 bci.bbox = *bbox;
655 bci.screen = screen;
656 bci.dtc = dtc;
658 while (!color_queue.empty() && !aborted) {
659 NR::Point color_point = color_queue.front();
660 color_queue.pop();
662 unsigned char *orig_px = get_pixel(px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
663 unsigned char orig_color[4];
664 for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
666 unsigned char merged_orig[4];
668 merge_pixel_with_background(orig_color, dtc, merged_orig);
670 unsigned char *trace_t = get_pixel(trace_px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
671 if ((trace_t[0] != 255) && (trace_t[3] != 255)) {
672 fill_queue.push_front(color_point);
673 }
675 while (!fill_queue.empty() && !aborted) {
676 NR::Point cp = fill_queue.front();
677 fill_queue.pop_front();
679 unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
681 // same color at this point
682 if (compare_pixels(s, orig_color, dtc, threshold, method)) {
683 int x = (int)cp[NR::X];
684 int y = (int)cp[NR::Y];
686 bool top_fill = true;
687 bool bottom_fill = true;
689 if (y > 0) {
690 top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, threshold, method, top_fill);
691 } else {
692 if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
693 aborted = true; break;
694 } else {
695 reached_screen_boundary = true;
696 }
697 }
698 if (y < y_limit) {
699 bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, threshold, method, bottom_fill);
700 } else {
701 if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
702 aborted = true; break;
703 } else {
704 reached_screen_boundary = true;
705 }
706 }
708 bci.is_left = true;
709 bci.x = x;
710 bci.y = y;
711 bci.top_fill = top_fill;
712 bci.bottom_fill = bottom_fill;
714 ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
716 switch (result) {
717 case SCANLINE_CHECK_ABORTED:
718 aborted = true;
719 break;
720 case SCANLINE_CHECK_BOUNDARY:
721 reached_screen_boundary = true;
722 break;
723 default:
724 break;
725 }
727 bci.is_left = false;
728 bci.x = x + 1;
729 bci.y = y;
730 bci.top_fill = top_fill;
731 bci.bottom_fill = bottom_fill;
733 result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
735 switch (result) {
736 case SCANLINE_CHECK_ABORTED:
737 aborted = true;
738 break;
739 case SCANLINE_CHECK_BOUNDARY:
740 reached_screen_boundary = true;
741 break;
742 default:
743 break;
744 }
745 }
746 }
747 }
749 g_free(px);
751 if (aborted) {
752 g_free(trace_px);
753 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
754 return;
755 }
757 if (reached_screen_boundary) {
758 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Only the visible part of the bounded area was filled.</b> If you want to fill all of the area, undo, zoom out, and fill again."));
759 }
761 GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
762 GDK_COLORSPACE_RGB,
763 TRUE,
764 8, width, height, width * 4,
765 (GdkPixbufDestroyNotify)g_free,
766 NULL);
768 NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
770 do_trace(pixbuf, desktop, inverted_affine, union_with_selection);
772 g_free(trace_px);
774 sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area"));
775 }
777 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
778 {
779 gint ret = FALSE;
781 SPDesktop *desktop = event_context->desktop;
783 switch (event->type) {
784 case GDK_BUTTON_PRESS:
785 if (event->button.state & GDK_CONTROL_MASK) {
786 NR::Point const button_w(event->button.x,
787 event->button.y);
789 SPItem *item = sp_event_context_find_item (desktop, button_w, TRUE, TRUE);
791 Inkscape::XML::Node *pathRepr = SP_OBJECT_REPR(item);
792 /* Set style */
793 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
794 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET, _("Set style on object"));
795 ret = TRUE;
796 }
797 break;
798 default:
799 break;
800 }
802 if (((SPEventContextClass *) parent_class)->item_handler) {
803 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
804 }
806 return ret;
807 }
809 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event)
810 {
811 static bool dragging;
813 gint ret = FALSE;
814 SPDesktop *desktop = event_context->desktop;
816 switch (event->type) {
817 case GDK_BUTTON_PRESS:
818 if ( event->button.button == 1 ) {
819 if (!(event->button.state & GDK_CONTROL_MASK)) {
820 NR::Point const button_w(event->button.x,
821 event->button.y);
823 // save drag origin
824 event_context->xp = (gint) button_w[NR::X];
825 event_context->yp = (gint) button_w[NR::Y];
826 event_context->within_tolerance = true;
828 dragging = true;
830 NR::Point const p(desktop->w2d(button_w));
831 Inkscape::Rubberband::get()->setMode(RUBBERBAND_MODE_TOUCHPATH);
832 Inkscape::Rubberband::get()->start(desktop, p);
833 }
834 }
835 case GDK_MOTION_NOTIFY:
836 if ( dragging
837 && ( event->motion.state & GDK_BUTTON1_MASK ) )
838 {
839 if ( event_context->within_tolerance
840 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
841 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
842 break; // do not drag if we're within tolerance from origin
843 }
845 event_context->within_tolerance = false;
847 NR::Point const motion_pt(event->motion.x, event->motion.y);
848 NR::Point const p(desktop->w2d(motion_pt));
849 if (Inkscape::Rubberband::get()->is_started()) {
850 Inkscape::Rubberband::get()->move(p);
851 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> areas to add to fill, hold <b>Alt</b> for touch fill"));
852 gobble_motion_events(GDK_BUTTON1_MASK);
853 }
854 }
855 break;
857 case GDK_BUTTON_RELEASE:
858 if ( event->button.button == 1 ) {
859 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
860 if (r->is_started()) {
861 // set "busy" cursor
862 desktop->setWaitingCursor();
864 if (SP_IS_EVENT_CONTEXT(event_context)) {
865 // Since setWaitingCursor runs main loop iterations, we may have already left this tool!
866 // So check if the tool is valid before doing anything
867 dragging = false;
869 bool is_point_fill = event_context->within_tolerance;
870 bool is_touch_fill = event->button.state & GDK_MOD1_MASK;
872 sp_flood_do_flood_fill(event_context, event, event->button.state & GDK_SHIFT_MASK, is_point_fill, is_touch_fill);
874 desktop->clearWaitingCursor();
875 // restore cursor when done; note that it may already be different if e.g. user
876 // switched to another tool during interruptible tracing or drawing, in which case do nothing
878 ret = TRUE;
879 }
881 r->stop();
882 event_context->defaultMessageContext()->clear();
883 }
884 }
885 break;
886 case GDK_KEY_PRESS:
887 switch (get_group0_keyval (&event->key)) {
888 case GDK_Up:
889 case GDK_Down:
890 case GDK_KP_Up:
891 case GDK_KP_Down:
892 // prevent the zoom field from activation
893 if (!MOD__CTRL_ONLY)
894 ret = TRUE;
895 break;
896 default:
897 break;
898 }
899 break;
900 default:
901 break;
902 }
904 if (!ret) {
905 if (((SPEventContextClass *) parent_class)->root_handler) {
906 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
907 }
908 }
910 return ret;
911 }
914 static void sp_flood_finish(SPFloodContext *rc)
915 {
916 rc->_message_context->clear();
918 if ( rc->item != NULL ) {
919 SPDesktop * desktop;
921 desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
923 SP_OBJECT(rc->item)->updateRepr();
925 sp_canvas_end_forced_full_redraws(desktop->canvas);
927 sp_desktop_selection(desktop)->set(rc->item);
928 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
929 _("Fill bounded area"));
931 rc->item = NULL;
932 }
933 }
935 void flood_channels_set_channels( gint channels )
936 {
937 prefs_set_int_attribute("tools.paintbucket", "channels", channels);
938 }
940 /*
941 Local Variables:
942 mode:c++
943 c-file-style:"stroustrup"
944 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
945 indent-tabs-mode:nil
946 fill-column:99
947 End:
948 */
949 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :