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>
23 #include "macros.h"
24 #include "display/sp-canvas.h"
25 #include "document.h"
26 #include "sp-namedview.h"
27 #include "sp-object.h"
28 #include "sp-rect.h"
29 #include "selection.h"
30 #include "selection-chemistry.h"
31 #include "desktop-handles.h"
32 #include "snap.h"
33 #include "desktop.h"
34 #include "desktop-style.h"
35 #include "message-stack.h"
36 #include "message-context.h"
37 #include "pixmaps/cursor-paintbucket.xpm"
38 #include "flood-context.h"
39 #include "sp-metrics.h"
40 #include <glibmm/i18n.h>
41 #include "object-edit.h"
42 #include "xml/repr.h"
43 #include "xml/node-event-vector.h"
44 #include "prefs-utils.h"
45 #include "context-fns.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-rotate-ops.h"
53 #include "libnr/nr-matrix-translate-ops.h"
54 #include "libnr/nr-rotate-fns.h"
55 #include "libnr/nr-scale-ops.h"
56 #include "libnr/nr-scale-translate-ops.h"
57 #include "libnr/nr-translate-matrix-ops.h"
58 #include "libnr/nr-translate-scale-ops.h"
59 #include "libnr/nr-matrix-ops.h"
60 #include "sp-item.h"
61 #include "sp-root.h"
62 #include "sp-defs.h"
63 #include "sp-path.h"
64 #include "splivarot.h"
65 #include "livarot/Path.h"
66 #include "livarot/Shape.h"
67 #include "libnr/n-art-bpath.h"
68 #include "svg/svg.h"
69 #include "color.h"
71 #include "trace/trace.h"
72 #include "trace/potrace/inkscape-potrace.h"
74 static void sp_flood_context_class_init(SPFloodContextClass *klass);
75 static void sp_flood_context_init(SPFloodContext *flood_context);
76 static void sp_flood_context_dispose(GObject *object);
78 static void sp_flood_context_setup(SPEventContext *ec);
80 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event);
81 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
83 static void sp_flood_finish(SPFloodContext *rc);
85 static SPEventContextClass *parent_class;
88 GtkType sp_flood_context_get_type()
89 {
90 static GType type = 0;
91 if (!type) {
92 GTypeInfo info = {
93 sizeof(SPFloodContextClass),
94 NULL, NULL,
95 (GClassInitFunc) sp_flood_context_class_init,
96 NULL, NULL,
97 sizeof(SPFloodContext),
98 4,
99 (GInstanceInitFunc) sp_flood_context_init,
100 NULL, /* value_table */
101 };
102 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPFloodContext", &info, (GTypeFlags) 0);
103 }
104 return type;
105 }
107 static void sp_flood_context_class_init(SPFloodContextClass *klass)
108 {
109 GObjectClass *object_class = (GObjectClass *) klass;
110 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
112 parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
114 object_class->dispose = sp_flood_context_dispose;
116 event_context_class->setup = sp_flood_context_setup;
117 event_context_class->root_handler = sp_flood_context_root_handler;
118 event_context_class->item_handler = sp_flood_context_item_handler;
119 }
121 static void sp_flood_context_init(SPFloodContext *flood_context)
122 {
123 SPEventContext *event_context = SP_EVENT_CONTEXT(flood_context);
125 event_context->cursor_shape = cursor_paintbucket_xpm;
126 event_context->hot_x = 11;
127 event_context->hot_y = 30;
128 event_context->xp = 0;
129 event_context->yp = 0;
130 event_context->tolerance = 0;
131 event_context->within_tolerance = false;
132 event_context->item_to_select = NULL;
134 event_context->shape_repr = NULL;
135 event_context->shape_knot_holder = NULL;
137 flood_context->item = NULL;
139 new (&flood_context->sel_changed_connection) sigc::connection();
140 }
142 static void sp_flood_context_dispose(GObject *object)
143 {
144 SPFloodContext *rc = SP_FLOOD_CONTEXT(object);
145 SPEventContext *ec = SP_EVENT_CONTEXT(object);
147 rc->sel_changed_connection.disconnect();
148 rc->sel_changed_connection.~connection();
150 /* fixme: This is necessary because we do not grab */
151 if (rc->item) {
152 sp_flood_finish(rc);
153 }
155 if (ec->shape_repr) { // remove old listener
156 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
157 Inkscape::GC::release(ec->shape_repr);
158 ec->shape_repr = 0;
159 }
161 if (rc->_message_context) {
162 delete rc->_message_context;
163 }
165 G_OBJECT_CLASS(parent_class)->dispose(object);
166 }
168 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
169 NULL, /* child_added */
170 NULL, /* child_removed */
171 ec_shape_event_attr_changed,
172 NULL, /* content_changed */
173 NULL /* order_changed */
174 };
176 /**
177 \brief Callback that processes the "changed" signal on the selection;
178 destroys old and creates new knotholder
179 */
180 void sp_flood_context_selection_changed(Inkscape::Selection *selection, gpointer data)
181 {
182 SPFloodContext *rc = SP_FLOOD_CONTEXT(data);
183 SPEventContext *ec = SP_EVENT_CONTEXT(rc);
185 if (ec->shape_repr) { // remove old listener
186 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
187 Inkscape::GC::release(ec->shape_repr);
188 ec->shape_repr = 0;
189 }
191 SPItem *item = selection->singleItem();
192 if (item) {
193 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
194 if (shape_repr) {
195 ec->shape_repr = shape_repr;
196 Inkscape::GC::anchor(shape_repr);
197 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
198 }
199 }
200 }
202 static void sp_flood_context_setup(SPEventContext *ec)
203 {
204 SPFloodContext *rc = SP_FLOOD_CONTEXT(ec);
206 if (((SPEventContextClass *) parent_class)->setup) {
207 ((SPEventContextClass *) parent_class)->setup(ec);
208 }
210 SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
211 if (item) {
212 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
213 if (shape_repr) {
214 ec->shape_repr = shape_repr;
215 Inkscape::GC::anchor(shape_repr);
216 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
217 }
218 }
220 rc->sel_changed_connection.disconnect();
221 rc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
222 sigc::bind(sigc::ptr_fun(&sp_flood_context_selection_changed), (gpointer)rc)
223 );
225 rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
226 }
228 static void merge_pixel_with_background(unsigned char *orig, unsigned char *bg, unsigned char *base) {
229 for (int i = 0; i < 3; i++) {
230 base[i] = (255 * (255 - bg[3])) / 255 + (bg[i] * bg[3]) / 255;
231 base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255;
232 }
233 base[3] = 255;
234 }
236 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) {
237 return px + (x + y * width) * 4;
238 }
240 enum PaintBucketChannels {
241 FLOOD_CHANNELS_RGB,
242 FLOOD_CHANNELS_R,
243 FLOOD_CHANNELS_G,
244 FLOOD_CHANNELS_B,
245 FLOOD_CHANNELS_H,
246 FLOOD_CHANNELS_S,
247 FLOOD_CHANNELS_L,
248 FLOOD_CHANNELS_ALPHA
249 };
251 GList * flood_channels_dropdown_items_list() {
252 GList *glist = NULL;
254 glist = g_list_append (glist, _("Visible Colors"));
255 glist = g_list_append (glist, _("Red"));
256 glist = g_list_append (glist, _("Green"));
257 glist = g_list_append (glist, _("Blue"));
258 glist = g_list_append (glist, _("Hue"));
259 glist = g_list_append (glist, _("Saturation"));
260 glist = g_list_append (glist, _("Lightness"));
261 glist = g_list_append (glist, _("Alpha"));
263 return glist;
264 }
266 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int threshold, PaintBucketChannels method) {
267 int diff = 0;
268 float hsl_check[3], hsl_orig[3];
270 if ((method == FLOOD_CHANNELS_H) ||
271 (method == FLOOD_CHANNELS_S) ||
272 (method == FLOOD_CHANNELS_L)) {
273 sp_color_rgb_to_hsl_floatv(hsl_check, check[0] / 255.0, check[1] / 255.0, check[2] / 255.0);
274 sp_color_rgb_to_hsl_floatv(hsl_orig, orig[0] / 255.0, orig[1] / 255.0, orig[2] / 255.0);
275 }
277 switch (method) {
278 case FLOOD_CHANNELS_ALPHA:
279 return ((int)abs(check[3] - orig[3]) <= threshold);
280 case FLOOD_CHANNELS_R:
281 return ((int)abs(check[0] - orig[0]) <= threshold);
282 case FLOOD_CHANNELS_G:
283 return ((int)abs(check[1] - orig[1]) <= threshold);
284 case FLOOD_CHANNELS_B:
285 return ((int)abs(check[2] - orig[2]) <= threshold);
286 case FLOOD_CHANNELS_RGB:
287 unsigned char merged_orig[4];
288 unsigned char merged_check[4];
290 merge_pixel_with_background(orig, dtc, merged_orig);
291 merge_pixel_with_background(check, dtc, merged_check);
293 for (int i = 0; i < 3; i++) {
294 diff += (int)abs(merged_check[i] - merged_orig[i]);
295 }
296 return ((diff / 3) <= ((threshold * 3) / 4));
298 case FLOOD_CHANNELS_H:
299 return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold);
300 case FLOOD_CHANNELS_S:
301 return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold);
302 case FLOOD_CHANNELS_L:
303 return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold);
304 }
306 return false;
307 }
309 static bool try_add_to_queue(std::queue<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) {
310 unsigned char *t = get_pixel(px, x, y, width);
311 if (compare_pixels(t, orig, dtc, threshold, method)) {
312 unsigned char *trace_t = get_pixel(trace_px, x, y, width);
313 if (trace_t[3] != 255) {
314 if (fill_switch) {
315 fill_queue->push(NR::Point(x, y));
316 }
317 }
318 return false;
319 }
320 return true;
321 }
323 static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform) {
324 SPDocument *document = sp_desktop_document(desktop);
326 Inkscape::Trace::Potrace::PotraceTracingEngine pte;
328 pte.setTraceType(Inkscape::Trace::Potrace::TRACE_BRIGHTNESS);
329 pte.setInvert(false);
331 Glib::RefPtr<Gdk::Pixbuf> pixbuf = Glib::wrap(px, true);
333 std::vector<Inkscape::Trace::TracingEngineResult> results = pte.trace(pixbuf);
335 Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr;
336 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
338 long totalNodeCount = 0L;
340 double offset = prefs_get_double_attribute("tools.paintbucket", "offset", 0.0);
342 for (unsigned int i=0 ; i<results.size() ; i++) {
343 Inkscape::Trace::TracingEngineResult result = results[i];
344 totalNodeCount += result.getNodeCount();
346 Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
347 /* Set style */
348 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
350 NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
351 Path *path = bpath_to_Path(bpath);
352 g_free(bpath);
354 if (offset != 0) {
356 Shape *path_shape = new Shape();
358 path->ConvertWithBackData(0.03);
359 path->Fill(path_shape, 0);
360 delete path;
362 Shape *expanded_path_shape = new Shape();
364 expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
365 path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
366 expanded_path_shape->ConvertToShape(path_shape, fill_positive);
368 Path *expanded_path = new Path();
370 expanded_path->Reset();
371 expanded_path_shape->ConvertToForme(expanded_path);
372 expanded_path->ConvertEvenLines(1.0);
373 expanded_path->Simplify(1.0);
375 delete path_shape;
376 delete expanded_path_shape;
378 gchar *str = expanded_path->svg_dump_path();
379 if (str && *str) {
380 pathRepr->setAttribute("d", str);
381 g_free(str);
382 } else {
383 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
384 Inkscape::GC::release(pathRepr);
385 g_free(str);
386 return;
387 }
389 delete expanded_path;
391 } else {
392 gchar *str = path->svg_dump_path();
393 delete path;
394 pathRepr->setAttribute("d", str);
395 g_free(str);
396 }
398 layer_repr->addChild(pathRepr, NULL);
400 SPObject *reprobj = document->getObjectByRepr(pathRepr);
401 if (reprobj) {
402 sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL);
404 // premultiply the item transform by the accumulated parent transform in the paste layer
405 NR::Matrix local = sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()));
406 if (!local.test_identity()) {
407 gchar const *t_str = pathRepr->attribute("transform");
408 NR::Matrix item_t (NR::identity());
409 if (t_str)
410 sp_svg_transform_read(t_str, &item_t);
411 item_t *= local.inverse();
412 // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
413 gchar *affinestr=sp_svg_transform_write(item_t);
414 pathRepr->setAttribute("transform", affinestr);
415 g_free(affinestr);
416 }
418 Inkscape::Selection *selection = sp_desktop_selection(desktop);
419 selection->set(reprobj);
420 pathRepr->setPosition(-1);
422 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
423 }
425 Inkscape::GC::release(pathRepr);
427 }
428 }
430 struct bitmap_coords_info {
431 bool is_left;
432 int x;
433 int y;
434 int y_limit;
435 int width;
436 int threshold;
437 PaintBucketChannels method;
438 unsigned char *dtc;
439 bool top_fill;
440 bool bottom_fill;
441 NR::Rect bbox;
442 NR::Rect screen;
443 };
445 enum ScanlineCheckResult {
446 SCANLINE_CHECK_OK,
447 SCANLINE_CHECK_ABORTED,
448 SCANLINE_CHECK_BOUNDARY
449 };
451 static ScanlineCheckResult perform_bitmap_scanline_check(std::queue<NR::Point> *fill_queue, guchar *px, guchar *trace_px, unsigned char *orig_color, bitmap_coords_info bci) {
452 bool aborted = false;
453 bool reached_screen_boundary = false;
454 bool ok;
456 bool keep_tracing;
457 unsigned char *t, *trace_t;
459 do {
460 ok = false;
461 if (bci.is_left) {
462 keep_tracing = (bci.x >= 0);
463 } else {
464 keep_tracing = (bci.x < bci.width);
465 }
467 if (keep_tracing) {
468 t = get_pixel(px, bci.x, bci.y, bci.width);
469 if (compare_pixels(t, orig_color, bci.dtc, bci.threshold, bci.method)) {
470 for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
471 trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
472 trace_t[3] = 255;
473 if (bci.y > 0) {
474 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);
475 }
476 if (bci.y < bci.y_limit) {
477 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);
478 }
479 if (bci.is_left) {
480 bci.x--;
481 } else {
482 bci.x++;
483 }
484 ok = true;
485 }
486 } else {
487 if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
488 aborted = true; break;
489 } else {
490 reached_screen_boundary = true;
491 }
492 }
493 } while (ok);
495 if (aborted) { return SCANLINE_CHECK_ABORTED; }
496 if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
497 return SCANLINE_CHECK_OK;
498 }
500 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event) {
501 SPDesktop *desktop = event_context->desktop;
502 SPDocument *document = sp_desktop_document(desktop);
504 /* Create new arena */
505 NRArena *arena = NRArena::create();
506 unsigned dkey = sp_item_display_key_new(1);
508 sp_document_ensure_up_to_date (document);
510 SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document));
511 NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
513 if (!bbox) {
514 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
515 return;
516 }
518 double zoom_scale = desktop->current_zoom();
519 double padding = 1.6;
521 NR::Rect screen = desktop->get_display_area();
523 int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
524 int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
526 NR::Point origin(screen.min()[NR::X],
527 sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
529 origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
530 origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
532 NR::scale scale(zoom_scale, zoom_scale);
533 NR::Matrix affine = scale * NR::translate(-origin * scale);
535 /* Create ArenaItems and set transform */
536 NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
537 nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
539 NRGC gc(NULL);
540 nr_matrix_set_identity(&gc.transform);
542 NRRectL final_bbox;
543 final_bbox.x0 = 0;
544 final_bbox.y0 = 0;//row;
545 final_bbox.x1 = width;
546 final_bbox.y1 = height;//row + num_rows;
548 nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
550 guchar *px = g_new(guchar, 4 * width * height);
551 //memset(px, 0x00, 4 * width * height);
553 NRPixBlock B;
554 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
555 final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
556 px, 4 * width, FALSE, FALSE );
558 SPNamedView *nv = sp_desktop_namedview(desktop);
559 unsigned long bgcolor = nv->pagecolor;
561 unsigned char dtc[4];
562 dtc[0] = NR_RGBA32_R(bgcolor);
563 dtc[1] = NR_RGBA32_G(bgcolor);
564 dtc[2] = NR_RGBA32_B(bgcolor);
565 dtc[3] = NR_RGBA32_A(bgcolor);
567 for (int fy = 0; fy < height; fy++) {
568 guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
569 for (int fx = 0; fx < width; fx++) {
570 for (int i = 0; i < 4; i++) {
571 *p++ = dtc[i];
572 }
573 }
574 }
576 nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
577 nr_pixblock_release(&B);
579 // Hide items
580 sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey);
582 nr_arena_item_unref(root);
583 nr_object_unref((NRObject *) arena);
585 NR::Point pw = NR::Point(event->button.x / zoom_scale, sp_document_height(document) + (event->button.y / zoom_scale)) * affine;
587 pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
588 pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
590 guchar *trace_px = g_new(guchar, 4 * width * height);
591 memset(trace_px, 0x00, 4 * width * height);
593 std::queue<NR::Point> fill_queue;
594 fill_queue.push(pw);
596 bool aborted = false;
597 int y_limit = height - 1;
599 unsigned char orig_color[4];
600 unsigned char *orig_px = get_pixel(px, (int)pw[NR::X], (int)pw[NR::Y], width);
601 for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
603 unsigned char merged_orig[4];
605 merge_pixel_with_background(orig_color, dtc, merged_orig);
607 PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
608 int threshold = prefs_get_int_attribute_limited("tools.paintbucket", "threshold", 1, 0, 100);
610 switch(method) {
611 case FLOOD_CHANNELS_ALPHA:
612 case FLOOD_CHANNELS_RGB:
613 case FLOOD_CHANNELS_R:
614 case FLOOD_CHANNELS_G:
615 case FLOOD_CHANNELS_B:
616 threshold = (255 * threshold) / 100;
617 break;
618 case FLOOD_CHANNELS_H:
619 case FLOOD_CHANNELS_S:
620 case FLOOD_CHANNELS_L:
621 break;
622 }
624 bool reached_screen_boundary = false;
626 bitmap_coords_info bci;
628 bci.y_limit = y_limit;
629 bci.width = width;
630 bci.threshold = threshold;
631 bci.method = method;
632 bci.bbox = *bbox;
633 bci.screen = screen;
634 bci.dtc = dtc;
636 while (!fill_queue.empty() && !aborted) {
637 NR::Point cp = fill_queue.front();
638 fill_queue.pop();
639 unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
641 // same color at this point
642 if (compare_pixels(s, orig_color, dtc, threshold, method)) {
643 int x = (int)cp[NR::X];
644 int y = (int)cp[NR::Y];
646 bool top_fill = true;
647 bool bottom_fill = true;
649 if (y > 0) {
650 top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, threshold, method, top_fill);
651 } else {
652 if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
653 aborted = true; break;
654 } else {
655 reached_screen_boundary = true;
656 }
657 }
658 if (y < y_limit) {
659 bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, threshold, method, bottom_fill);
660 } else {
661 if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
662 aborted = true; break;
663 } else {
664 reached_screen_boundary = true;
665 }
666 }
668 bci.is_left = true;
669 bci.x = x;
670 bci.y = y;
671 bci.top_fill = top_fill;
672 bci.bottom_fill = bottom_fill;
674 ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
676 switch (result) {
677 case SCANLINE_CHECK_ABORTED:
678 aborted = true;
679 break;
680 case SCANLINE_CHECK_BOUNDARY:
681 reached_screen_boundary = true;
682 break;
683 default:
684 break;
685 }
687 bci.is_left = false;
688 bci.x = x + 1;
689 bci.y = y;
690 bci.top_fill = top_fill;
691 bci.bottom_fill = bottom_fill;
693 result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
695 switch (result) {
696 case SCANLINE_CHECK_ABORTED:
697 aborted = true;
698 break;
699 case SCANLINE_CHECK_BOUNDARY:
700 reached_screen_boundary = true;
701 break;
702 default:
703 break;
704 }
705 }
706 }
708 g_free(px);
710 if (aborted) {
711 g_free(trace_px);
712 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
713 return;
714 }
716 if (reached_screen_boundary) {
717 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."));
718 }
720 GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
721 GDK_COLORSPACE_RGB,
722 TRUE,
723 8, width, height, width * 4,
724 (GdkPixbufDestroyNotify)g_free,
725 NULL);
727 NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
729 do_trace(pixbuf, desktop, inverted_affine);
731 g_free(trace_px);
733 sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area"));
734 }
736 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
737 {
738 gint ret = FALSE;
740 SPDesktop *desktop = event_context->desktop;
742 switch (event->type) {
743 case GDK_BUTTON_PRESS:
744 if (event->button.state & GDK_CONTROL_MASK) {
745 NR::Point const button_w(event->button.x,
746 event->button.y);
748 SPItem *item = sp_event_context_find_item (desktop, button_w, TRUE, TRUE);
750 Inkscape::XML::Node *pathRepr = SP_OBJECT_REPR(item);
751 /* Set style */
752 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
753 ret = TRUE;
754 }
755 break;
756 default:
757 break;
758 }
760 if (((SPEventContextClass *) parent_class)->item_handler) {
761 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
762 }
764 return ret;
765 }
767 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event)
768 {
769 gint ret = FALSE;
770 SPDesktop *desktop = event_context->desktop;
772 switch (event->type) {
773 case GDK_BUTTON_PRESS:
774 if ( event->button.button == 1 ) {
775 if (!(event->button.state & GDK_CONTROL_MASK)) {
776 // set "busy" cursor
777 GdkCursor *waiting = gdk_cursor_new(GDK_WATCH);
778 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, waiting);
780 sp_flood_do_flood_fill(event_context, event);
782 // restore cursor when done
783 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
784 gdk_cursor_unref(waiting);
786 ret = TRUE;
787 }
788 }
789 break;
790 case GDK_KEY_PRESS:
791 switch (get_group0_keyval (&event->key)) {
792 case GDK_Up:
793 case GDK_Down:
794 case GDK_KP_Up:
795 case GDK_KP_Down:
796 // prevent the zoom field from activation
797 if (!MOD__CTRL_ONLY)
798 ret = TRUE;
799 break;
800 default:
801 break;
802 }
803 break;
804 default:
805 break;
806 }
808 if (!ret) {
809 if (((SPEventContextClass *) parent_class)->root_handler) {
810 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
811 }
812 }
814 return ret;
815 }
818 static void sp_flood_finish(SPFloodContext *rc)
819 {
820 rc->_message_context->clear();
822 if ( rc->item != NULL ) {
823 SPDesktop * desktop;
825 desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
827 SP_OBJECT(rc->item)->updateRepr();
829 sp_canvas_end_forced_full_redraws(desktop->canvas);
831 sp_desktop_selection(desktop)->set(rc->item);
832 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
833 _("Fill bounded area"));
835 rc->item = NULL;
836 }
837 }
839 void flood_channels_changed(GtkComboBox *cbox, GtkWidget *tbl)
840 {
841 prefs_set_int_attribute("tools.paintbucket", "channels", (gint)gtk_combo_box_get_active(cbox));
842 }
844 /*
845 Local Variables:
846 mode:c++
847 c-file-style:"stroustrup"
848 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
849 indent-tabs-mode:nil
850 fill-column:99
851 End:
852 */
853 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :