3b7cc8d741d01c39e7c0f1efae6cf39237fb5740
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 GList * flood_channels_dropdown_items_list() {
242 GList *glist = NULL;
244 glist = g_list_append (glist, _("Visible Colors"));
245 glist = g_list_append (glist, _("Red"));
246 glist = g_list_append (glist, _("Green"));
247 glist = g_list_append (glist, _("Blue"));
248 glist = g_list_append (glist, _("Hue"));
249 glist = g_list_append (glist, _("Saturation"));
250 glist = g_list_append (glist, _("Lightness"));
251 glist = g_list_append (glist, _("Alpha"));
253 return glist;
254 }
256 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int threshold, PaintBucketChannels method) {
257 int diff = 0;
258 float hsl_check[3], hsl_orig[3];
260 if ((method == FLOOD_CHANNELS_H) ||
261 (method == FLOOD_CHANNELS_S) ||
262 (method == FLOOD_CHANNELS_L)) {
263 sp_color_rgb_to_hsl_floatv(hsl_check, check[0] / 255.0, check[1] / 255.0, check[2] / 255.0);
264 sp_color_rgb_to_hsl_floatv(hsl_orig, orig[0] / 255.0, orig[1] / 255.0, orig[2] / 255.0);
265 }
267 switch (method) {
268 case FLOOD_CHANNELS_ALPHA:
269 return ((int)abs(check[3] - orig[3]) <= threshold);
270 case FLOOD_CHANNELS_R:
271 return ((int)abs(check[0] - orig[0]) <= threshold);
272 case FLOOD_CHANNELS_G:
273 return ((int)abs(check[1] - orig[1]) <= threshold);
274 case FLOOD_CHANNELS_B:
275 return ((int)abs(check[2] - orig[2]) <= threshold);
276 case FLOOD_CHANNELS_RGB:
277 unsigned char merged_orig[4];
278 unsigned char merged_check[4];
280 merge_pixel_with_background(orig, dtc, merged_orig);
281 merge_pixel_with_background(check, dtc, merged_check);
283 for (int i = 0; i < 3; i++) {
284 diff += (int)abs(merged_check[i] - merged_orig[i]);
285 }
286 return ((diff / 3) <= ((threshold * 3) / 4));
288 case FLOOD_CHANNELS_H:
289 return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold);
290 case FLOOD_CHANNELS_S:
291 return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold);
292 case FLOOD_CHANNELS_L:
293 return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold);
294 }
296 return false;
297 }
299 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) {
300 unsigned char *t = get_pixel(px, x, y, width);
301 if (compare_pixels(t, orig, dtc, threshold, method)) {
302 unsigned char *trace_t = get_pixel(trace_px, x, y, width);
303 if (trace_t[3] != 255 && trace_t[0] != 255) {
304 if (fill_switch) {
305 fill_queue->push_back(NR::Point(x, y));
306 trace_t[0] = 255;
307 }
308 }
309 return false;
310 }
311 return true;
312 }
314 static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform, bool union_with_selection) {
315 SPDocument *document = sp_desktop_document(desktop);
317 Inkscape::Trace::Potrace::PotraceTracingEngine pte;
319 pte.setTraceType(Inkscape::Trace::Potrace::TRACE_BRIGHTNESS);
320 pte.setInvert(false);
322 Glib::RefPtr<Gdk::Pixbuf> pixbuf = Glib::wrap(px, true);
324 std::vector<Inkscape::Trace::TracingEngineResult> results = pte.trace(pixbuf);
326 Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr;
327 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
329 long totalNodeCount = 0L;
331 double offset = prefs_get_double_attribute("tools.paintbucket", "offset", 0.0);
333 for (unsigned int i=0 ; i<results.size() ; i++) {
334 Inkscape::Trace::TracingEngineResult result = results[i];
335 totalNodeCount += result.getNodeCount();
337 Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
338 /* Set style */
339 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
341 NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
342 Path *path = bpath_to_Path(bpath);
343 g_free(bpath);
345 if (offset != 0) {
347 Shape *path_shape = new Shape();
349 path->ConvertWithBackData(0.03);
350 path->Fill(path_shape, 0);
351 delete path;
353 Shape *expanded_path_shape = new Shape();
355 expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
356 path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
357 expanded_path_shape->ConvertToShape(path_shape, fill_positive);
359 Path *expanded_path = new Path();
361 expanded_path->Reset();
362 expanded_path_shape->ConvertToForme(expanded_path);
363 expanded_path->ConvertEvenLines(1.0);
364 expanded_path->Simplify(1.0);
366 delete path_shape;
367 delete expanded_path_shape;
369 gchar *str = expanded_path->svg_dump_path();
370 if (str && *str) {
371 pathRepr->setAttribute("d", str);
372 g_free(str);
373 } else {
374 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
375 Inkscape::GC::release(pathRepr);
376 g_free(str);
377 return;
378 }
380 delete expanded_path;
382 } else {
383 gchar *str = path->svg_dump_path();
384 delete path;
385 pathRepr->setAttribute("d", str);
386 g_free(str);
387 }
389 layer_repr->addChild(pathRepr, NULL);
391 SPObject *reprobj = document->getObjectByRepr(pathRepr);
392 if (reprobj) {
393 sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL);
395 // premultiply the item transform by the accumulated parent transform in the paste layer
396 NR::Matrix local = sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()));
397 if (!local.test_identity()) {
398 gchar const *t_str = pathRepr->attribute("transform");
399 NR::Matrix item_t (NR::identity());
400 if (t_str)
401 sp_svg_transform_read(t_str, &item_t);
402 item_t *= local.inverse();
403 // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
404 gchar *affinestr=sp_svg_transform_write(item_t);
405 pathRepr->setAttribute("transform", affinestr);
406 g_free(affinestr);
407 }
409 Inkscape::Selection *selection = sp_desktop_selection(desktop);
411 pathRepr->setPosition(-1);
413 if (union_with_selection) {
414 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)));
415 selection->add(reprobj);
416 sp_selected_path_union_skip_undo();
417 } else {
418 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
419 selection->set(reprobj);
420 }
422 }
424 Inkscape::GC::release(pathRepr);
426 }
427 }
429 struct bitmap_coords_info {
430 bool is_left;
431 int x;
432 int y;
433 int y_limit;
434 int width;
435 int threshold;
436 PaintBucketChannels method;
437 unsigned char *dtc;
438 bool top_fill;
439 bool bottom_fill;
440 NR::Rect bbox;
441 NR::Rect screen;
442 };
444 enum ScanlineCheckResult {
445 SCANLINE_CHECK_OK,
446 SCANLINE_CHECK_ABORTED,
447 SCANLINE_CHECK_BOUNDARY
448 };
450 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) {
451 bool aborted = false;
452 bool reached_screen_boundary = false;
453 bool ok;
455 bool keep_tracing;
456 unsigned char *t, *trace_t;
458 do {
459 ok = false;
460 if (bci.is_left) {
461 keep_tracing = (bci.x >= 0);
462 } else {
463 keep_tracing = (bci.x < bci.width);
464 }
466 if (keep_tracing) {
467 t = get_pixel(px, bci.x, bci.y, bci.width);
468 if (compare_pixels(t, orig_color, bci.dtc, bci.threshold, bci.method)) {
469 for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
470 trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
471 trace_t[3] = 255;
472 if (bci.y > 0) {
473 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);
474 }
475 if (bci.y < bci.y_limit) {
476 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);
477 }
478 if (bci.is_left) {
479 bci.x--;
480 } else {
481 bci.x++;
482 }
483 ok = true;
484 }
485 } else {
486 if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
487 aborted = true; break;
488 } else {
489 reached_screen_boundary = true;
490 }
491 }
492 } while (ok);
494 if (aborted) { return SCANLINE_CHECK_ABORTED; }
495 if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
496 return SCANLINE_CHECK_OK;
497 }
499 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event, bool union_with_selection, bool is_point_fill, bool is_touch_fill) {
500 SPDesktop *desktop = event_context->desktop;
501 SPDocument *document = sp_desktop_document(desktop);
503 /* Create new arena */
504 NRArena *arena = NRArena::create();
505 unsigned dkey = sp_item_display_key_new(1);
507 sp_document_ensure_up_to_date (document);
509 SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document));
510 NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
512 if (!bbox) {
513 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
514 return;
515 }
517 double zoom_scale = desktop->current_zoom();
518 double padding = 1.6;
520 NR::Rect screen = desktop->get_display_area();
522 int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
523 int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
525 NR::Point origin(screen.min()[NR::X],
526 sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
528 origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
529 origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
531 NR::scale scale(zoom_scale, zoom_scale);
532 NR::Matrix affine = scale * NR::translate(-origin * scale);
534 /* Create ArenaItems and set transform */
535 NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
536 nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
538 NRGC gc(NULL);
539 nr_matrix_set_identity(&gc.transform);
541 NRRectL final_bbox;
542 final_bbox.x0 = 0;
543 final_bbox.y0 = 0;//row;
544 final_bbox.x1 = width;
545 final_bbox.y1 = height;//row + num_rows;
547 nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
549 guchar *px = g_new(guchar, 4 * width * height);
551 NRPixBlock B;
552 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
553 final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
554 px, 4 * width, FALSE, FALSE );
556 SPNamedView *nv = sp_desktop_namedview(desktop);
557 unsigned long bgcolor = nv->pagecolor;
559 unsigned char dtc[4];
560 dtc[0] = NR_RGBA32_R(bgcolor);
561 dtc[1] = NR_RGBA32_G(bgcolor);
562 dtc[2] = NR_RGBA32_B(bgcolor);
563 dtc[3] = NR_RGBA32_A(bgcolor);
565 for (int fy = 0; fy < height; fy++) {
566 guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
567 for (int fx = 0; fx < width; fx++) {
568 for (int i = 0; i < 4; i++) {
569 *p++ = dtc[i];
570 }
571 }
572 }
574 nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
575 nr_pixblock_release(&B);
577 // Hide items
578 sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey);
580 nr_arena_item_unref(root);
581 nr_object_unref((NRObject *) arena);
583 guchar *trace_px = g_new(guchar, 4 * width * height);
584 memset(trace_px, 0x00, 4 * width * height);
586 std::deque<NR::Point> fill_queue;
587 std::queue<NR::Point> color_queue;
589 std::vector<NR::Point> fill_points;
591 if (is_point_fill) {
592 fill_points.push_back(NR::Point(event->button.x, event->button.y));
593 } else {
594 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
595 fill_points = r->getPoints();
596 }
598 for (unsigned int i = 0; i < fill_points.size(); i++) {
599 NR::Point pw = NR::Point(fill_points[i][NR::X] / zoom_scale, sp_document_height(document) + (fill_points[i][NR::Y] / zoom_scale)) * affine;
601 pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
602 pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
604 if (is_touch_fill) {
605 if (i == 0) {
606 color_queue.push(pw);
607 } else {
608 fill_queue.push_back(pw);
609 }
610 } else {
611 color_queue.push(pw);
612 }
613 }
615 bool aborted = false;
616 int y_limit = height - 1;
618 PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
619 int threshold = prefs_get_int_attribute_limited("tools.paintbucket", "threshold", 1, 0, 100);
621 switch(method) {
622 case FLOOD_CHANNELS_ALPHA:
623 case FLOOD_CHANNELS_RGB:
624 case FLOOD_CHANNELS_R:
625 case FLOOD_CHANNELS_G:
626 case FLOOD_CHANNELS_B:
627 threshold = (255 * threshold) / 100;
628 break;
629 case FLOOD_CHANNELS_H:
630 case FLOOD_CHANNELS_S:
631 case FLOOD_CHANNELS_L:
632 break;
633 }
635 bool reached_screen_boundary = false;
637 bitmap_coords_info bci;
639 bci.y_limit = y_limit;
640 bci.width = width;
641 bci.threshold = threshold;
642 bci.method = method;
643 bci.bbox = *bbox;
644 bci.screen = screen;
645 bci.dtc = dtc;
647 while (!color_queue.empty() && !aborted) {
648 NR::Point color_point = color_queue.front();
649 color_queue.pop();
651 unsigned char *orig_px = get_pixel(px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
652 unsigned char orig_color[4];
653 for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
655 unsigned char merged_orig[4];
657 merge_pixel_with_background(orig_color, dtc, merged_orig);
659 unsigned char *trace_t = get_pixel(trace_px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
660 if ((trace_t[0] != 255) && (trace_t[3] != 255)) {
661 fill_queue.push_front(color_point);
662 }
664 while (!fill_queue.empty() && !aborted) {
665 NR::Point cp = fill_queue.front();
666 fill_queue.pop_front();
668 unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
670 // same color at this point
671 if (compare_pixels(s, orig_color, dtc, threshold, method)) {
672 int x = (int)cp[NR::X];
673 int y = (int)cp[NR::Y];
675 bool top_fill = true;
676 bool bottom_fill = true;
678 if (y > 0) {
679 top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, threshold, method, top_fill);
680 } else {
681 if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
682 aborted = true; break;
683 } else {
684 reached_screen_boundary = true;
685 }
686 }
687 if (y < y_limit) {
688 bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, threshold, method, bottom_fill);
689 } else {
690 if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
691 aborted = true; break;
692 } else {
693 reached_screen_boundary = true;
694 }
695 }
697 bci.is_left = true;
698 bci.x = x;
699 bci.y = y;
700 bci.top_fill = top_fill;
701 bci.bottom_fill = bottom_fill;
703 ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
705 switch (result) {
706 case SCANLINE_CHECK_ABORTED:
707 aborted = true;
708 break;
709 case SCANLINE_CHECK_BOUNDARY:
710 reached_screen_boundary = true;
711 break;
712 default:
713 break;
714 }
716 bci.is_left = false;
717 bci.x = x + 1;
718 bci.y = y;
719 bci.top_fill = top_fill;
720 bci.bottom_fill = bottom_fill;
722 result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
724 switch (result) {
725 case SCANLINE_CHECK_ABORTED:
726 aborted = true;
727 break;
728 case SCANLINE_CHECK_BOUNDARY:
729 reached_screen_boundary = true;
730 break;
731 default:
732 break;
733 }
734 }
735 }
736 }
738 g_free(px);
740 if (aborted) {
741 g_free(trace_px);
742 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
743 return;
744 }
746 if (reached_screen_boundary) {
747 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."));
748 }
750 GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
751 GDK_COLORSPACE_RGB,
752 TRUE,
753 8, width, height, width * 4,
754 (GdkPixbufDestroyNotify)g_free,
755 NULL);
757 NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
759 do_trace(pixbuf, desktop, inverted_affine, union_with_selection);
761 g_free(trace_px);
763 sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area"));
764 }
766 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
767 {
768 gint ret = FALSE;
770 SPDesktop *desktop = event_context->desktop;
772 switch (event->type) {
773 case GDK_BUTTON_PRESS:
774 if (event->button.state & GDK_CONTROL_MASK) {
775 NR::Point const button_w(event->button.x,
776 event->button.y);
778 SPItem *item = sp_event_context_find_item (desktop, button_w, TRUE, TRUE);
780 Inkscape::XML::Node *pathRepr = SP_OBJECT_REPR(item);
781 /* Set style */
782 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
783 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET, _("Set style on object"));
784 ret = TRUE;
785 }
786 break;
787 default:
788 break;
789 }
791 if (((SPEventContextClass *) parent_class)->item_handler) {
792 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
793 }
795 return ret;
796 }
798 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event)
799 {
800 static bool dragging;
802 gint ret = FALSE;
803 SPDesktop *desktop = event_context->desktop;
805 switch (event->type) {
806 case GDK_BUTTON_PRESS:
807 if ( event->button.button == 1 ) {
808 if (!(event->button.state & GDK_CONTROL_MASK)) {
809 NR::Point const button_w(event->button.x,
810 event->button.y);
812 if (Inkscape::have_viable_layer(desktop, event_context->defaultMessageContext())) {
813 // save drag origin
814 event_context->xp = (gint) button_w[NR::X];
815 event_context->yp = (gint) button_w[NR::Y];
816 event_context->within_tolerance = true;
818 dragging = true;
820 NR::Point const p(desktop->w2d(button_w));
821 Inkscape::Rubberband::get()->setMode(RUBBERBAND_MODE_TOUCHPATH);
822 Inkscape::Rubberband::get()->start(desktop, p);
823 }
824 }
825 }
826 case GDK_MOTION_NOTIFY:
827 if ( dragging
828 && ( event->motion.state & GDK_BUTTON1_MASK ) )
829 {
830 if ( event_context->within_tolerance
831 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
832 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
833 break; // do not drag if we're within tolerance from origin
834 }
836 event_context->within_tolerance = false;
838 NR::Point const motion_pt(event->motion.x, event->motion.y);
839 NR::Point const p(desktop->w2d(motion_pt));
840 if (Inkscape::Rubberband::get()->is_started()) {
841 Inkscape::Rubberband::get()->move(p);
842 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> areas to add to fill, hold <b>Alt</b> for touch fill"));
843 gobble_motion_events(GDK_BUTTON1_MASK);
844 }
845 }
846 break;
848 case GDK_BUTTON_RELEASE:
849 if ( event->button.button == 1 ) {
850 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
851 if (r->is_started()) {
852 // set "busy" cursor
853 desktop->setWaitingCursor();
855 if (SP_IS_EVENT_CONTEXT(event_context)) {
856 // Since setWaitingCursor runs main loop iterations, we may have already left this tool!
857 // So check if the tool is valid before doing anything
858 dragging = false;
860 bool is_point_fill = event_context->within_tolerance;
861 bool is_touch_fill = event->button.state & GDK_MOD1_MASK;
863 sp_flood_do_flood_fill(event_context, event, event->button.state & GDK_SHIFT_MASK, is_point_fill, is_touch_fill);
865 desktop->clearWaitingCursor();
866 // restore cursor when done; note that it may already be different if e.g. user
867 // switched to another tool during interruptible tracing or drawing, in which case do nothing
869 ret = TRUE;
870 }
872 r->stop();
873 event_context->defaultMessageContext()->clear();
874 }
875 }
876 break;
877 case GDK_KEY_PRESS:
878 switch (get_group0_keyval (&event->key)) {
879 case GDK_Up:
880 case GDK_Down:
881 case GDK_KP_Up:
882 case GDK_KP_Down:
883 // prevent the zoom field from activation
884 if (!MOD__CTRL_ONLY)
885 ret = TRUE;
886 break;
887 default:
888 break;
889 }
890 break;
891 default:
892 break;
893 }
895 if (!ret) {
896 if (((SPEventContextClass *) parent_class)->root_handler) {
897 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
898 }
899 }
901 return ret;
902 }
905 static void sp_flood_finish(SPFloodContext *rc)
906 {
907 rc->_message_context->clear();
909 if ( rc->item != NULL ) {
910 SPDesktop * desktop;
912 desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
914 SP_OBJECT(rc->item)->updateRepr();
916 sp_canvas_end_forced_full_redraws(desktop->canvas);
918 sp_desktop_selection(desktop)->set(rc->item);
919 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
920 _("Fill bounded area"));
922 rc->item = NULL;
923 }
924 }
926 void flood_channels_set_channels( gint channels )
927 {
928 prefs_set_int_attribute("tools.paintbucket", "channels", channels);
929 }
931 /*
932 Local Variables:
933 mode:c++
934 c-file-style:"stroustrup"
935 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
936 indent-tabs-mode:nil
937 fill-column:99
938 End:
939 */
940 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :