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"
46 #include "rubberband.h"
48 #include "display/nr-arena-item.h"
49 #include "display/nr-arena.h"
50 #include "display/nr-arena-image.h"
51 #include "display/canvas-arena.h"
52 #include "libnr/nr-pixops.h"
53 #include "libnr/nr-matrix-rotate-ops.h"
54 #include "libnr/nr-matrix-translate-ops.h"
55 #include "libnr/nr-rotate-fns.h"
56 #include "libnr/nr-scale-ops.h"
57 #include "libnr/nr-scale-translate-ops.h"
58 #include "libnr/nr-translate-matrix-ops.h"
59 #include "libnr/nr-translate-scale-ops.h"
60 #include "libnr/nr-matrix-ops.h"
61 #include "sp-item.h"
62 #include "sp-root.h"
63 #include "sp-defs.h"
64 #include "sp-path.h"
65 #include "splivarot.h"
66 #include "livarot/Path.h"
67 #include "livarot/Shape.h"
68 #include "libnr/n-art-bpath.h"
69 #include "svg/svg.h"
70 #include "color.h"
72 #include "trace/trace.h"
73 #include "trace/potrace/inkscape-potrace.h"
75 static void sp_flood_context_class_init(SPFloodContextClass *klass);
76 static void sp_flood_context_init(SPFloodContext *flood_context);
77 static void sp_flood_context_dispose(GObject *object);
79 static void sp_flood_context_setup(SPEventContext *ec);
81 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event);
82 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
84 static void sp_flood_finish(SPFloodContext *rc);
86 static SPEventContextClass *parent_class;
89 GtkType sp_flood_context_get_type()
90 {
91 static GType type = 0;
92 if (!type) {
93 GTypeInfo info = {
94 sizeof(SPFloodContextClass),
95 NULL, NULL,
96 (GClassInitFunc) sp_flood_context_class_init,
97 NULL, NULL,
98 sizeof(SPFloodContext),
99 4,
100 (GInstanceInitFunc) sp_flood_context_init,
101 NULL, /* value_table */
102 };
103 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPFloodContext", &info, (GTypeFlags) 0);
104 }
105 return type;
106 }
108 static void sp_flood_context_class_init(SPFloodContextClass *klass)
109 {
110 GObjectClass *object_class = (GObjectClass *) klass;
111 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
113 parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
115 object_class->dispose = sp_flood_context_dispose;
117 event_context_class->setup = sp_flood_context_setup;
118 event_context_class->root_handler = sp_flood_context_root_handler;
119 event_context_class->item_handler = sp_flood_context_item_handler;
120 }
122 static void sp_flood_context_init(SPFloodContext *flood_context)
123 {
124 SPEventContext *event_context = SP_EVENT_CONTEXT(flood_context);
126 event_context->cursor_shape = cursor_paintbucket_xpm;
127 event_context->hot_x = 11;
128 event_context->hot_y = 30;
129 event_context->xp = 0;
130 event_context->yp = 0;
131 event_context->tolerance = 0;
132 event_context->within_tolerance = false;
133 event_context->item_to_select = NULL;
135 event_context->shape_repr = NULL;
136 event_context->shape_knot_holder = NULL;
138 flood_context->item = NULL;
140 new (&flood_context->sel_changed_connection) sigc::connection();
141 }
143 static void sp_flood_context_dispose(GObject *object)
144 {
145 SPFloodContext *rc = SP_FLOOD_CONTEXT(object);
146 SPEventContext *ec = SP_EVENT_CONTEXT(object);
148 rc->sel_changed_connection.disconnect();
149 rc->sel_changed_connection.~connection();
151 /* fixme: This is necessary because we do not grab */
152 if (rc->item) {
153 sp_flood_finish(rc);
154 }
156 if (ec->shape_repr) { // remove old listener
157 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
158 Inkscape::GC::release(ec->shape_repr);
159 ec->shape_repr = 0;
160 }
162 if (rc->_message_context) {
163 delete rc->_message_context;
164 }
166 G_OBJECT_CLASS(parent_class)->dispose(object);
167 }
169 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
170 NULL, /* child_added */
171 NULL, /* child_removed */
172 ec_shape_event_attr_changed,
173 NULL, /* content_changed */
174 NULL /* order_changed */
175 };
177 /**
178 \brief Callback that processes the "changed" signal on the selection;
179 destroys old and creates new knotholder
180 */
181 void sp_flood_context_selection_changed(Inkscape::Selection *selection, gpointer data)
182 {
183 SPFloodContext *rc = SP_FLOOD_CONTEXT(data);
184 SPEventContext *ec = SP_EVENT_CONTEXT(rc);
186 if (ec->shape_repr) { // remove old listener
187 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
188 Inkscape::GC::release(ec->shape_repr);
189 ec->shape_repr = 0;
190 }
192 SPItem *item = selection->singleItem();
193 if (item) {
194 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
195 if (shape_repr) {
196 ec->shape_repr = shape_repr;
197 Inkscape::GC::anchor(shape_repr);
198 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
199 }
200 }
201 }
203 static void sp_flood_context_setup(SPEventContext *ec)
204 {
205 SPFloodContext *rc = SP_FLOOD_CONTEXT(ec);
207 if (((SPEventContextClass *) parent_class)->setup) {
208 ((SPEventContextClass *) parent_class)->setup(ec);
209 }
211 SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
212 if (item) {
213 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
214 if (shape_repr) {
215 ec->shape_repr = shape_repr;
216 Inkscape::GC::anchor(shape_repr);
217 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
218 }
219 }
221 rc->sel_changed_connection.disconnect();
222 rc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
223 sigc::bind(sigc::ptr_fun(&sp_flood_context_selection_changed), (gpointer)rc)
224 );
226 rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
227 }
229 static void
230 merge_pixel_with_background (unsigned char *orig, unsigned char *bg,
231 unsigned char *base)
232 {
233 for (int i = 0; i < 3; i++) {
234 base[i] = (255 * (255 - bg[3])) / 255 + (bg[i] * bg[3]) / 255;
235 base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255;
236 }
237 base[3] = 255;
238 }
240 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) {
241 return px + (x + y * width) * 4;
242 }
244 enum PaintBucketChannels {
245 FLOOD_CHANNELS_RGB,
246 FLOOD_CHANNELS_R,
247 FLOOD_CHANNELS_G,
248 FLOOD_CHANNELS_B,
249 FLOOD_CHANNELS_H,
250 FLOOD_CHANNELS_S,
251 FLOOD_CHANNELS_L,
252 FLOOD_CHANNELS_ALPHA
253 };
255 GList * flood_channels_dropdown_items_list() {
256 GList *glist = NULL;
258 glist = g_list_append (glist, _("Visible Colors"));
259 glist = g_list_append (glist, _("Red"));
260 glist = g_list_append (glist, _("Green"));
261 glist = g_list_append (glist, _("Blue"));
262 glist = g_list_append (glist, _("Hue"));
263 glist = g_list_append (glist, _("Saturation"));
264 glist = g_list_append (glist, _("Lightness"));
265 glist = g_list_append (glist, _("Alpha"));
267 return glist;
268 }
270 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int threshold, PaintBucketChannels method) {
271 int diff = 0;
272 float hsl_check[3], hsl_orig[3];
274 if ((method == FLOOD_CHANNELS_H) ||
275 (method == FLOOD_CHANNELS_S) ||
276 (method == FLOOD_CHANNELS_L)) {
277 sp_color_rgb_to_hsl_floatv(hsl_check, check[0] / 255.0, check[1] / 255.0, check[2] / 255.0);
278 sp_color_rgb_to_hsl_floatv(hsl_orig, orig[0] / 255.0, orig[1] / 255.0, orig[2] / 255.0);
279 }
281 switch (method) {
282 case FLOOD_CHANNELS_ALPHA:
283 return ((int)abs(check[3] - orig[3]) <= threshold);
284 case FLOOD_CHANNELS_R:
285 return ((int)abs(check[0] - orig[0]) <= threshold);
286 case FLOOD_CHANNELS_G:
287 return ((int)abs(check[1] - orig[1]) <= threshold);
288 case FLOOD_CHANNELS_B:
289 return ((int)abs(check[2] - orig[2]) <= threshold);
290 case FLOOD_CHANNELS_RGB:
291 unsigned char merged_orig[4];
292 unsigned char merged_check[4];
294 merge_pixel_with_background(orig, dtc, merged_orig);
295 merge_pixel_with_background(check, dtc, merged_check);
297 for (int i = 0; i < 3; i++) {
298 diff += (int)abs(merged_check[i] - merged_orig[i]);
299 }
300 return ((diff / 3) <= ((threshold * 3) / 4));
302 case FLOOD_CHANNELS_H:
303 return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold);
304 case FLOOD_CHANNELS_S:
305 return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold);
306 case FLOOD_CHANNELS_L:
307 return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold);
308 }
310 return false;
311 }
313 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) {
314 unsigned char *t = get_pixel(px, x, y, width);
315 if (compare_pixels(t, orig, dtc, threshold, method)) {
316 unsigned char *trace_t = get_pixel(trace_px, x, y, width);
317 if (trace_t[3] != 255 && trace_t[0] != 255) {
318 if (fill_switch) {
319 fill_queue->push(NR::Point(x, y));
320 trace_t[0] = 255;
321 }
322 }
323 return false;
324 }
325 return true;
326 }
328 static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform, bool union_with_selection) {
329 SPDocument *document = sp_desktop_document(desktop);
331 Inkscape::Trace::Potrace::PotraceTracingEngine pte;
333 pte.setTraceType(Inkscape::Trace::Potrace::TRACE_BRIGHTNESS);
334 pte.setInvert(false);
336 Glib::RefPtr<Gdk::Pixbuf> pixbuf = Glib::wrap(px, true);
338 std::vector<Inkscape::Trace::TracingEngineResult> results = pte.trace(pixbuf);
340 Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr;
341 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
343 long totalNodeCount = 0L;
345 double offset = prefs_get_double_attribute("tools.paintbucket", "offset", 0.0);
347 for (unsigned int i=0 ; i<results.size() ; i++) {
348 Inkscape::Trace::TracingEngineResult result = results[i];
349 totalNodeCount += result.getNodeCount();
351 Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
352 /* Set style */
353 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
355 NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
356 Path *path = bpath_to_Path(bpath);
357 g_free(bpath);
359 if (offset != 0) {
361 Shape *path_shape = new Shape();
363 path->ConvertWithBackData(0.03);
364 path->Fill(path_shape, 0);
365 delete path;
367 Shape *expanded_path_shape = new Shape();
369 expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
370 path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
371 expanded_path_shape->ConvertToShape(path_shape, fill_positive);
373 Path *expanded_path = new Path();
375 expanded_path->Reset();
376 expanded_path_shape->ConvertToForme(expanded_path);
377 expanded_path->ConvertEvenLines(1.0);
378 expanded_path->Simplify(1.0);
380 delete path_shape;
381 delete expanded_path_shape;
383 gchar *str = expanded_path->svg_dump_path();
384 if (str && *str) {
385 pathRepr->setAttribute("d", str);
386 g_free(str);
387 } else {
388 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
389 Inkscape::GC::release(pathRepr);
390 g_free(str);
391 return;
392 }
394 delete expanded_path;
396 } else {
397 gchar *str = path->svg_dump_path();
398 delete path;
399 pathRepr->setAttribute("d", str);
400 g_free(str);
401 }
403 layer_repr->addChild(pathRepr, NULL);
405 SPObject *reprobj = document->getObjectByRepr(pathRepr);
406 if (reprobj) {
407 sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL);
409 // premultiply the item transform by the accumulated parent transform in the paste layer
410 NR::Matrix local = sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()));
411 if (!local.test_identity()) {
412 gchar const *t_str = pathRepr->attribute("transform");
413 NR::Matrix item_t (NR::identity());
414 if (t_str)
415 sp_svg_transform_read(t_str, &item_t);
416 item_t *= local.inverse();
417 // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
418 gchar *affinestr=sp_svg_transform_write(item_t);
419 pathRepr->setAttribute("transform", affinestr);
420 g_free(affinestr);
421 }
423 Inkscape::Selection *selection = sp_desktop_selection(desktop);
425 pathRepr->setPosition(-1);
427 if (union_with_selection) {
428 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)));
429 selection->add(reprobj);
430 sp_selected_path_union_skip_undo();
431 } else {
432 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
433 selection->set(reprobj);
434 }
436 }
438 Inkscape::GC::release(pathRepr);
440 }
441 }
443 struct bitmap_coords_info {
444 bool is_left;
445 int x;
446 int y;
447 int y_limit;
448 int width;
449 int threshold;
450 PaintBucketChannels method;
451 unsigned char *dtc;
452 bool top_fill;
453 bool bottom_fill;
454 NR::Rect bbox;
455 NR::Rect screen;
456 };
458 enum ScanlineCheckResult {
459 SCANLINE_CHECK_OK,
460 SCANLINE_CHECK_ABORTED,
461 SCANLINE_CHECK_BOUNDARY
462 };
464 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) {
465 bool aborted = false;
466 bool reached_screen_boundary = false;
467 bool ok;
469 bool keep_tracing;
470 unsigned char *t, *trace_t;
472 do {
473 ok = false;
474 if (bci.is_left) {
475 keep_tracing = (bci.x >= 0);
476 } else {
477 keep_tracing = (bci.x < bci.width);
478 }
480 if (keep_tracing) {
481 t = get_pixel(px, bci.x, bci.y, bci.width);
482 if (compare_pixels(t, orig_color, bci.dtc, bci.threshold, bci.method)) {
483 for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
484 trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
485 trace_t[3] = 255;
486 if (bci.y > 0) {
487 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);
488 }
489 if (bci.y < bci.y_limit) {
490 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);
491 }
492 if (bci.is_left) {
493 bci.x--;
494 } else {
495 bci.x++;
496 }
497 ok = true;
498 }
499 } else {
500 if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
501 aborted = true; break;
502 } else {
503 reached_screen_boundary = true;
504 }
505 }
506 } while (ok);
508 if (aborted) { return SCANLINE_CHECK_ABORTED; }
509 if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
510 return SCANLINE_CHECK_OK;
511 }
513 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event, bool union_with_selection, bool use_rubberband_points) {
514 SPDesktop *desktop = event_context->desktop;
515 SPDocument *document = sp_desktop_document(desktop);
517 /* Create new arena */
518 NRArena *arena = NRArena::create();
519 unsigned dkey = sp_item_display_key_new(1);
521 sp_document_ensure_up_to_date (document);
523 SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document));
524 NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
526 if (!bbox) {
527 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
528 return;
529 }
531 double zoom_scale = desktop->current_zoom();
532 double padding = 1.6;
534 NR::Rect screen = desktop->get_display_area();
536 int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
537 int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
539 NR::Point origin(screen.min()[NR::X],
540 sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
542 origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
543 origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
545 NR::scale scale(zoom_scale, zoom_scale);
546 NR::Matrix affine = scale * NR::translate(-origin * scale);
548 /* Create ArenaItems and set transform */
549 NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
550 nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
552 NRGC gc(NULL);
553 nr_matrix_set_identity(&gc.transform);
555 NRRectL final_bbox;
556 final_bbox.x0 = 0;
557 final_bbox.y0 = 0;//row;
558 final_bbox.x1 = width;
559 final_bbox.y1 = height;//row + num_rows;
561 nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
563 guchar *px = g_new(guchar, 4 * width * height);
564 //memset(px, 0x00, 4 * width * height);
566 NRPixBlock B;
567 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
568 final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
569 px, 4 * width, FALSE, FALSE );
571 SPNamedView *nv = sp_desktop_namedview(desktop);
572 unsigned long bgcolor = nv->pagecolor;
574 unsigned char dtc[4];
575 dtc[0] = NR_RGBA32_R(bgcolor);
576 dtc[1] = NR_RGBA32_G(bgcolor);
577 dtc[2] = NR_RGBA32_B(bgcolor);
578 dtc[3] = NR_RGBA32_A(bgcolor);
580 for (int fy = 0; fy < height; fy++) {
581 guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
582 for (int fx = 0; fx < width; fx++) {
583 for (int i = 0; i < 4; i++) {
584 *p++ = dtc[i];
585 }
586 }
587 }
589 nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
590 nr_pixblock_release(&B);
592 // Hide items
593 sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey);
595 nr_arena_item_unref(root);
596 nr_object_unref((NRObject *) arena);
598 guchar *trace_px = g_new(guchar, 4 * width * height);
599 memset(trace_px, 0x00, 4 * width * height);
601 std::queue<NR::Point> fill_queue;
604 std::vector<NR::Point> points;
606 if (use_rubberband_points) {
607 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
608 points = r->getPoints();
609 } else {
610 points.push_back(NR::Point(event->button.x, event->button.y));
611 }
613 for (unsigned int i = 0; i < points.size(); i++) {
614 NR::Point pw = NR::Point(points[i][NR::X] / zoom_scale, sp_document_height(document) + (points[i][NR::Y] / zoom_scale)) * affine;
616 pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
617 pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
619 fill_queue.push(pw);
620 }
622 NR::Point first_point = NR::Point(points[0][NR::X] / zoom_scale, sp_document_height(document) + (points[0][NR::Y] / zoom_scale)) * affine;
624 unsigned char *orig_px = get_pixel(px, (int)first_point[NR::X], (int)first_point[NR::Y], width);
625 unsigned char orig_color[4];
626 for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
628 bool aborted = false;
629 int y_limit = height - 1;
631 unsigned char merged_orig[4];
633 merge_pixel_with_background(orig_color, dtc, merged_orig);
635 PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
636 int threshold = prefs_get_int_attribute_limited("tools.paintbucket", "threshold", 1, 0, 100);
638 switch(method) {
639 case FLOOD_CHANNELS_ALPHA:
640 case FLOOD_CHANNELS_RGB:
641 case FLOOD_CHANNELS_R:
642 case FLOOD_CHANNELS_G:
643 case FLOOD_CHANNELS_B:
644 threshold = (255 * threshold) / 100;
645 break;
646 case FLOOD_CHANNELS_H:
647 case FLOOD_CHANNELS_S:
648 case FLOOD_CHANNELS_L:
649 break;
650 }
652 bool reached_screen_boundary = false;
654 bitmap_coords_info bci;
656 bci.y_limit = y_limit;
657 bci.width = width;
658 bci.threshold = threshold;
659 bci.method = method;
660 bci.bbox = *bbox;
661 bci.screen = screen;
662 bci.dtc = dtc;
664 while (!fill_queue.empty() && !aborted) {
665 NR::Point cp = fill_queue.front();
666 fill_queue.pop();
667 unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
669 // same color at this point
670 if (compare_pixels(s, orig_color, dtc, threshold, method)) {
671 int x = (int)cp[NR::X];
672 int y = (int)cp[NR::Y];
674 bool top_fill = true;
675 bool bottom_fill = true;
677 if (y > 0) {
678 top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, threshold, method, top_fill);
679 } else {
680 if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
681 aborted = true; break;
682 } else {
683 reached_screen_boundary = true;
684 }
685 }
686 if (y < y_limit) {
687 bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, threshold, method, bottom_fill);
688 } else {
689 if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
690 aborted = true; break;
691 } else {
692 reached_screen_boundary = true;
693 }
694 }
696 bci.is_left = true;
697 bci.x = x;
698 bci.y = y;
699 bci.top_fill = top_fill;
700 bci.bottom_fill = bottom_fill;
702 ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
704 switch (result) {
705 case SCANLINE_CHECK_ABORTED:
706 aborted = true;
707 break;
708 case SCANLINE_CHECK_BOUNDARY:
709 reached_screen_boundary = true;
710 break;
711 default:
712 break;
713 }
715 bci.is_left = false;
716 bci.x = x + 1;
717 bci.y = y;
718 bci.top_fill = top_fill;
719 bci.bottom_fill = bottom_fill;
721 result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
723 switch (result) {
724 case SCANLINE_CHECK_ABORTED:
725 aborted = true;
726 break;
727 case SCANLINE_CHECK_BOUNDARY:
728 reached_screen_boundary = true;
729 break;
730 default:
731 break;
732 }
733 }
734 }
736 g_free(px);
738 if (aborted) {
739 g_free(trace_px);
740 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
741 return;
742 }
744 if (reached_screen_boundary) {
745 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."));
746 }
748 GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
749 GDK_COLORSPACE_RGB,
750 TRUE,
751 8, width, height, width * 4,
752 (GdkPixbufDestroyNotify)g_free,
753 NULL);
755 NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
757 do_trace(pixbuf, desktop, inverted_affine, union_with_selection);
759 g_free(trace_px);
761 sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area"));
762 }
764 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
765 {
766 gint ret = FALSE;
768 SPDesktop *desktop = event_context->desktop;
770 switch (event->type) {
771 case GDK_BUTTON_PRESS:
772 if (event->button.state & GDK_CONTROL_MASK) {
773 NR::Point const button_w(event->button.x,
774 event->button.y);
776 SPItem *item = sp_event_context_find_item (desktop, button_w, TRUE, TRUE);
778 Inkscape::XML::Node *pathRepr = SP_OBJECT_REPR(item);
779 /* Set style */
780 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
781 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET, _("Set style on object"));
782 ret = TRUE;
783 }
784 break;
785 default:
786 break;
787 }
789 if (((SPEventContextClass *) parent_class)->item_handler) {
790 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
791 }
793 return ret;
794 }
796 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event)
797 {
798 gint ret = FALSE;
799 SPDesktop *desktop = event_context->desktop;
801 switch (event->type) {
802 case GDK_BUTTON_PRESS:
803 if ( event->button.button == 1 ) {
804 if (!(event->button.state & GDK_CONTROL_MASK)) {
805 if (event->button.state & GDK_MOD1_MASK) {
806 NR::Point const button_pt(event->button.x, event->button.y);
807 NR::Point const p(desktop->w2d(button_pt));
808 Inkscape::Rubberband::get()->setMode(RUBBERBAND_MODE_TOUCHPATH);
809 Inkscape::Rubberband::get()->start(desktop, p);
810 } else {
811 // set "busy" cursor
812 desktop->setWaitingCursor();
814 if (SP_IS_EVENT_CONTEXT(event_context)) {
815 // Since setWaitingCursor runs main loop iterations, we may have already left this tool!
816 // So check if the tool is valid before doing anything
818 sp_flood_do_flood_fill(event_context, event, event->button.state & GDK_SHIFT_MASK, false);
820 // restore cursor when done; note that it may already be different if e.g. user
821 // switched to another tool during interruptible tracing or drawing, in which case do nothing
822 desktop->clearWaitingCursor();
824 ret = TRUE;
825 }
826 }
827 }
828 }
829 case GDK_MOTION_NOTIFY:
830 if (event->motion.state & GDK_BUTTON1_MASK) {
831 NR::Point const motion_pt(event->motion.x, event->motion.y);
832 NR::Point const p(desktop->w2d(motion_pt));
833 if (Inkscape::Rubberband::get()->is_started()) {
834 Inkscape::Rubberband::get()->move(p);
835 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> areas to add to fill"));
836 gobble_motion_events(GDK_BUTTON1_MASK);
837 }
838 }
839 break;
841 case GDK_BUTTON_RELEASE:
842 if ( event->button.button == 1 ) {
843 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
844 if (r->is_started()) {
845 // set "busy" cursor
846 desktop->setWaitingCursor();
848 if (SP_IS_EVENT_CONTEXT(event_context)) {
849 // Since setWaitingCursor runs main loop iterations, we may have already left this tool!
850 // So check if the tool is valid before doing anything
852 sp_flood_do_flood_fill(event_context, event, event->button.state & GDK_SHIFT_MASK, true);
854 // restore cursor when done; note that it may already be different if e.g. user
855 // switched to another tool during interruptible tracing or drawing, in which case do nothing
856 desktop->clearWaitingCursor();
858 ret = TRUE;
859 }
860 r->stop();
861 event_context->defaultMessageContext()->clear();
862 }
863 }
864 break;
865 case GDK_KEY_PRESS:
866 switch (get_group0_keyval (&event->key)) {
867 case GDK_Up:
868 case GDK_Down:
869 case GDK_KP_Up:
870 case GDK_KP_Down:
871 // prevent the zoom field from activation
872 if (!MOD__CTRL_ONLY)
873 ret = TRUE;
874 break;
875 default:
876 break;
877 }
878 break;
879 default:
880 break;
881 }
883 if (!ret) {
884 if (((SPEventContextClass *) parent_class)->root_handler) {
885 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
886 }
887 }
889 return ret;
890 }
893 static void sp_flood_finish(SPFloodContext *rc)
894 {
895 rc->_message_context->clear();
897 if ( rc->item != NULL ) {
898 SPDesktop * desktop;
900 desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
902 SP_OBJECT(rc->item)->updateRepr();
904 sp_canvas_end_forced_full_redraws(desktop->canvas);
906 sp_desktop_selection(desktop)->set(rc->item);
907 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
908 _("Fill bounded area"));
910 rc->item = NULL;
911 }
912 }
914 void flood_channels_set_channels( gint channels )
915 {
916 prefs_set_int_attribute("tools.paintbucket", "channels", channels);
917 }
919 /*
920 Local Variables:
921 mode:c++
922 c-file-style:"stroustrup"
923 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
924 indent-tabs-mode:nil
925 fill-column:99
926 End:
927 */
928 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :