7c2f05d53bb9eac53c9c9741f0ba537c9a140ccf
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"
70 #include "trace/trace.h"
71 #include "trace/potrace/inkscape-potrace.h"
73 static void sp_flood_context_class_init(SPFloodContextClass *klass);
74 static void sp_flood_context_init(SPFloodContext *flood_context);
75 static void sp_flood_context_dispose(GObject *object);
77 static void sp_flood_context_setup(SPEventContext *ec);
79 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event);
80 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
82 static void sp_flood_finish(SPFloodContext *rc);
84 static SPEventContextClass *parent_class;
87 GtkType sp_flood_context_get_type()
88 {
89 static GType type = 0;
90 if (!type) {
91 GTypeInfo info = {
92 sizeof(SPFloodContextClass),
93 NULL, NULL,
94 (GClassInitFunc) sp_flood_context_class_init,
95 NULL, NULL,
96 sizeof(SPFloodContext),
97 4,
98 (GInstanceInitFunc) sp_flood_context_init,
99 NULL, /* value_table */
100 };
101 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPFloodContext", &info, (GTypeFlags) 0);
102 }
103 return type;
104 }
106 static void sp_flood_context_class_init(SPFloodContextClass *klass)
107 {
108 GObjectClass *object_class = (GObjectClass *) klass;
109 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
111 parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass);
113 object_class->dispose = sp_flood_context_dispose;
115 event_context_class->setup = sp_flood_context_setup;
116 event_context_class->root_handler = sp_flood_context_root_handler;
117 event_context_class->item_handler = sp_flood_context_item_handler;
118 }
120 static void sp_flood_context_init(SPFloodContext *flood_context)
121 {
122 SPEventContext *event_context = SP_EVENT_CONTEXT(flood_context);
124 event_context->cursor_shape = cursor_paintbucket_xpm;
125 event_context->hot_x = 11;
126 event_context->hot_y = 30;
127 event_context->xp = 0;
128 event_context->yp = 0;
129 event_context->tolerance = 0;
130 event_context->within_tolerance = false;
131 event_context->item_to_select = NULL;
133 event_context->shape_repr = NULL;
134 event_context->shape_knot_holder = NULL;
136 flood_context->item = NULL;
138 new (&flood_context->sel_changed_connection) sigc::connection();
139 }
141 static void sp_flood_context_dispose(GObject *object)
142 {
143 SPFloodContext *rc = SP_FLOOD_CONTEXT(object);
144 SPEventContext *ec = SP_EVENT_CONTEXT(object);
146 rc->sel_changed_connection.disconnect();
147 rc->sel_changed_connection.~connection();
149 /* fixme: This is necessary because we do not grab */
150 if (rc->item) {
151 sp_flood_finish(rc);
152 }
154 if (ec->shape_repr) { // remove old listener
155 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
156 Inkscape::GC::release(ec->shape_repr);
157 ec->shape_repr = 0;
158 }
160 if (rc->_message_context) {
161 delete rc->_message_context;
162 }
164 G_OBJECT_CLASS(parent_class)->dispose(object);
165 }
167 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
168 NULL, /* child_added */
169 NULL, /* child_removed */
170 ec_shape_event_attr_changed,
171 NULL, /* content_changed */
172 NULL /* order_changed */
173 };
175 /**
176 \brief Callback that processes the "changed" signal on the selection;
177 destroys old and creates new knotholder
178 */
179 void sp_flood_context_selection_changed(Inkscape::Selection *selection, gpointer data)
180 {
181 SPFloodContext *rc = SP_FLOOD_CONTEXT(data);
182 SPEventContext *ec = SP_EVENT_CONTEXT(rc);
184 if (ec->shape_repr) { // remove old listener
185 sp_repr_remove_listener_by_data(ec->shape_repr, ec);
186 Inkscape::GC::release(ec->shape_repr);
187 ec->shape_repr = 0;
188 }
190 SPItem *item = selection->singleItem();
191 if (item) {
192 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
193 if (shape_repr) {
194 ec->shape_repr = shape_repr;
195 Inkscape::GC::anchor(shape_repr);
196 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
197 }
198 }
199 }
201 static void sp_flood_context_setup(SPEventContext *ec)
202 {
203 SPFloodContext *rc = SP_FLOOD_CONTEXT(ec);
205 if (((SPEventContextClass *) parent_class)->setup) {
206 ((SPEventContextClass *) parent_class)->setup(ec);
207 }
209 SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
210 if (item) {
211 Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
212 if (shape_repr) {
213 ec->shape_repr = shape_repr;
214 Inkscape::GC::anchor(shape_repr);
215 sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
216 }
217 }
219 rc->sel_changed_connection.disconnect();
220 rc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged(
221 sigc::bind(sigc::ptr_fun(&sp_flood_context_selection_changed), (gpointer)rc)
222 );
224 rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
225 }
227 static void merge_pixel_with_background(unsigned char *orig, unsigned char *bg, unsigned char *base) {
228 for (int i = 0; i < 3; i++) {
229 base[i] = (255 * (255 - bg[3])) / 255 + (bg[i] * bg[3]) / 255;
230 base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255;
231 }
232 base[3] = 255;
233 }
235 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) {
236 return px + (x + y * width) * 4;
237 }
239 enum PaintBucketChannels {
240 FLOOD_CHANNELS_RGB,
241 FLOOD_CHANNELS_R,
242 FLOOD_CHANNELS_G,
243 FLOOD_CHANNELS_B,
244 FLOOD_CHANNELS_ALPHA
245 };
247 GList * flood_channels_dropdown_items_list() {
248 GList *glist = NULL;
250 glist = g_list_append (glist, _("Visible Colors"));
251 glist = g_list_append (glist, _("Red"));
252 glist = g_list_append (glist, _("Green"));
253 glist = g_list_append (glist, _("Blue"));
254 glist = g_list_append (glist, _("Alpha"));
256 return glist;
257 }
259 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int tolerance, PaintBucketChannels method) {
260 int diff = 0;
262 switch (method) {
263 case FLOOD_CHANNELS_ALPHA:
264 return ((int)abs(check[3] - orig[3]) <= tolerance);
265 case FLOOD_CHANNELS_R:
266 return ((int)abs(check[0] - orig[0]) <= tolerance);
267 case FLOOD_CHANNELS_G:
268 return ((int)abs(check[1] - orig[1]) <= tolerance);
269 case FLOOD_CHANNELS_B:
270 return ((int)abs(check[2] - orig[2]) <= tolerance);
271 case FLOOD_CHANNELS_RGB:
272 unsigned char merged_orig[4];
273 unsigned char merged_check[4];
275 merge_pixel_with_background(orig, dtc, merged_orig);
276 merge_pixel_with_background(check, dtc, merged_check);
278 for (int i = 0; i < 3; i++) {
279 diff += (int)abs(merged_check[i] - merged_orig[i]);
280 }
281 return ((diff / 3) <= ((tolerance * 3) / 4));
282 }
284 return false;
285 }
287 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 tolerance, PaintBucketChannels method, bool fill_switch) {
288 unsigned char *t = get_pixel(px, x, y, width);
289 if (compare_pixels(t, orig, dtc, tolerance, method)) {
290 unsigned char *trace_t = get_pixel(trace_px, x, y, width);
291 if (trace_t[3] != 255) {
292 if (fill_switch) {
293 fill_queue->push(NR::Point(x, y));
294 }
295 }
296 return false;
297 }
298 return true;
299 }
301 static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform) {
302 SPDocument *document = sp_desktop_document(desktop);
304 Inkscape::Trace::Potrace::PotraceTracingEngine pte;
306 pte.setTraceType(Inkscape::Trace::Potrace::TRACE_BRIGHTNESS);
307 pte.setInvert(false);
309 Glib::RefPtr<Gdk::Pixbuf> pixbuf = Glib::wrap(px, true);
311 std::vector<Inkscape::Trace::TracingEngineResult> results = pte.trace(pixbuf);
313 Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr;
314 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
316 long totalNodeCount = 0L;
318 double offset = prefs_get_double_attribute("tools.paintbucket", "offset", 0.0);
320 for (unsigned int i=0 ; i<results.size() ; i++) {
321 Inkscape::Trace::TracingEngineResult result = results[i];
322 totalNodeCount += result.getNodeCount();
324 Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
325 /* Set style */
326 sp_desktop_apply_style_tool (desktop, pathRepr, "tools.paintbucket", false);
328 NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
329 Path *path = bpath_to_Path(bpath);
330 g_free(bpath);
332 if (offset != 0) {
334 Shape *path_shape = new Shape();
336 path->ConvertWithBackData(0.03);
337 path->Fill(path_shape, 0);
338 delete path;
340 Shape *expanded_path_shape = new Shape();
342 expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
343 path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
344 expanded_path_shape->ConvertToShape(path_shape, fill_positive);
346 Path *expanded_path = new Path();
348 expanded_path->Reset();
349 expanded_path_shape->ConvertToForme(expanded_path);
350 expanded_path->ConvertEvenLines(1.0);
351 expanded_path->Simplify(1.0);
353 delete path_shape;
354 delete expanded_path_shape;
356 gchar *str = expanded_path->svg_dump_path();
357 if (str && *str) {
358 pathRepr->setAttribute("d", str);
359 g_free(str);
360 } else {
361 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
362 Inkscape::GC::release(pathRepr);
363 g_free(str);
364 return;
365 }
367 delete expanded_path;
369 } else {
370 gchar *str = path->svg_dump_path();
371 delete path;
372 pathRepr->setAttribute("d", str);
373 g_free(str);
374 }
376 layer_repr->addChild(pathRepr, NULL);
378 SPObject *reprobj = document->getObjectByRepr(pathRepr);
379 if (reprobj) {
380 sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL);
382 // premultiply the item transform by the accumulated parent transform in the paste layer
383 NR::Matrix local = sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()));
384 if (!local.test_identity()) {
385 gchar const *t_str = pathRepr->attribute("transform");
386 NR::Matrix item_t (NR::identity());
387 if (t_str)
388 sp_svg_transform_read(t_str, &item_t);
389 item_t *= local.inverse();
390 // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
391 gchar *affinestr=sp_svg_transform_write(item_t);
392 pathRepr->setAttribute("transform", affinestr);
393 g_free(affinestr);
394 }
396 Inkscape::Selection *selection = sp_desktop_selection(desktop);
397 selection->set(reprobj);
398 pathRepr->setPosition(-1);
400 desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
401 }
403 Inkscape::GC::release(pathRepr);
405 }
406 }
408 struct bitmap_coords_info {
409 bool is_left;
410 int x;
411 int y;
412 int y_limit;
413 int width;
414 int tolerance;
415 PaintBucketChannels method;
416 unsigned char *dtc;
417 bool top_fill;
418 bool bottom_fill;
419 NR::Rect bbox;
420 NR::Rect screen;
421 };
423 enum ScanlineCheckResult {
424 SCANLINE_CHECK_OK,
425 SCANLINE_CHECK_ABORTED,
426 SCANLINE_CHECK_BOUNDARY
427 };
429 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) {
430 bool aborted = false;
431 bool reached_screen_boundary = false;
432 bool ok;
434 bool keep_tracing;
435 unsigned char *t, *trace_t;
437 do {
438 ok = false;
439 if (bci.is_left) {
440 keep_tracing = (bci.x >= 0);
441 } else {
442 keep_tracing = (bci.x < bci.width);
443 }
445 if (keep_tracing) {
446 t = get_pixel(px, bci.x, bci.y, bci.width);
447 if (compare_pixels(t, orig_color, bci.dtc, bci.tolerance, bci.method)) {
448 for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
449 trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
450 trace_t[3] = 255;
451 if (bci.y > 0) {
452 bci.top_fill = try_add_to_queue(fill_queue, px, trace_px, orig_color, bci.dtc, bci.x, bci.y - 1, bci.width, bci.tolerance, bci.method, bci.top_fill);
453 }
454 if (bci.y < bci.y_limit) {
455 bci.bottom_fill = try_add_to_queue(fill_queue, px, trace_px, orig_color, bci.dtc, bci.x, bci.y + 1, bci.width, bci.tolerance, bci.method, bci.bottom_fill);
456 }
457 if (bci.is_left) {
458 bci.x--;
459 } else {
460 bci.x++;
461 }
462 ok = true;
463 }
464 } else {
465 if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
466 aborted = true; break;
467 } else {
468 reached_screen_boundary = true;
469 }
470 }
471 } while (ok);
473 if (aborted) { return SCANLINE_CHECK_ABORTED; }
474 if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
475 return SCANLINE_CHECK_OK;
476 }
478 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event) {
479 SPDesktop *desktop = event_context->desktop;
480 SPDocument *document = sp_desktop_document(desktop);
482 /* Create new arena */
483 NRArena *arena = NRArena::create();
484 unsigned dkey = sp_item_display_key_new(1);
486 sp_document_ensure_up_to_date (document);
488 SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document));
489 NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
491 if (!bbox) {
492 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
493 return;
494 }
496 double zoom_scale = desktop->current_zoom();
497 double padding = 1.6;
499 NR::Rect screen = desktop->get_display_area();
501 int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
502 int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
504 NR::Point origin(screen.min()[NR::X],
505 sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
507 origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
508 origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
510 NR::scale scale(zoom_scale, zoom_scale);
511 NR::Matrix affine = scale * NR::translate(-origin * scale);
513 /* Create ArenaItems and set transform */
514 NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
515 nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
517 NRGC gc(NULL);
518 nr_matrix_set_identity(&gc.transform);
520 NRRectL final_bbox;
521 final_bbox.x0 = 0;
522 final_bbox.y0 = 0;//row;
523 final_bbox.x1 = width;
524 final_bbox.y1 = height;//row + num_rows;
526 nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
528 guchar *px = g_new(guchar, 4 * width * height);
529 //memset(px, 0x00, 4 * width * height);
531 NRPixBlock B;
532 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
533 final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
534 px, 4 * width, FALSE, FALSE );
536 SPNamedView *nv = sp_desktop_namedview(desktop);
537 unsigned long bgcolor = nv->pagecolor;
539 unsigned char dtc[4];
540 dtc[0] = NR_RGBA32_R(bgcolor);
541 dtc[1] = NR_RGBA32_G(bgcolor);
542 dtc[2] = NR_RGBA32_B(bgcolor);
543 dtc[3] = NR_RGBA32_A(bgcolor);
545 for (int fy = 0; fy < height; fy++) {
546 guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
547 for (int fx = 0; fx < width; fx++) {
548 for (int i = 0; i < 4; i++) {
549 *p++ = dtc[i];
550 }
551 }
552 }
554 nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
555 nr_pixblock_release(&B);
557 // Hide items
558 sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey);
560 nr_arena_item_unref(root);
561 nr_object_unref((NRObject *) arena);
563 NR::Point pw = NR::Point(event->button.x / zoom_scale, sp_document_height(document) + (event->button.y / zoom_scale)) * affine;
565 pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
566 pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
568 guchar *trace_px = g_new(guchar, 4 * width * height);
569 memset(trace_px, 0x00, 4 * width * height);
571 std::queue<NR::Point> fill_queue;
572 fill_queue.push(pw);
574 bool aborted = false;
575 int y_limit = height - 1;
577 unsigned char orig_color[4];
578 unsigned char *orig_px = get_pixel(px, (int)pw[NR::X], (int)pw[NR::Y], width);
579 for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
581 unsigned char merged_orig[4];
583 merge_pixel_with_background(orig_color, dtc, merged_orig);
585 int tolerance = (255 * prefs_get_int_attribute_limited("tools.paintbucket", "tolerance", 1, 0, 100)) / 100;
586 PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
588 bool reached_screen_boundary = false;
590 bitmap_coords_info bci;
592 bci.y_limit = y_limit;
593 bci.width = width;
594 bci.tolerance = tolerance;
595 bci.method = method;
596 bci.bbox = *bbox;
597 bci.screen = screen;
598 bci.dtc = dtc;
600 while (!fill_queue.empty() && !aborted) {
601 NR::Point cp = fill_queue.front();
602 fill_queue.pop();
603 unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
605 // same color at this point
606 if (compare_pixels(s, orig_color, dtc, tolerance, method)) {
607 int x = (int)cp[NR::X];
608 int y = (int)cp[NR::Y];
610 bool top_fill = true;
611 bool bottom_fill = true;
613 if (y > 0) {
614 top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, tolerance, method, top_fill);
615 } else {
616 if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
617 aborted = true; break;
618 } else {
619 reached_screen_boundary = true;
620 }
621 }
622 if (y < y_limit) {
623 bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, tolerance, method, bottom_fill);
624 } else {
625 if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
626 aborted = true; break;
627 } else {
628 reached_screen_boundary = true;
629 }
630 }
632 bci.is_left = true;
633 bci.x = x;
634 bci.y = y;
635 bci.top_fill = top_fill;
636 bci.bottom_fill = bottom_fill;
638 ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
640 switch (result) {
641 case SCANLINE_CHECK_ABORTED:
642 aborted = true;
643 break;
644 case SCANLINE_CHECK_BOUNDARY:
645 reached_screen_boundary = true;
646 break;
647 default:
648 break;
649 }
651 bci.is_left = false;
652 bci.x = x + 1;
653 bci.y = y;
654 bci.top_fill = top_fill;
655 bci.bottom_fill = bottom_fill;
657 result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
659 switch (result) {
660 case SCANLINE_CHECK_ABORTED:
661 aborted = true;
662 break;
663 case SCANLINE_CHECK_BOUNDARY:
664 reached_screen_boundary = true;
665 break;
666 default:
667 break;
668 }
669 }
670 }
672 g_free(px);
674 if (aborted) {
675 g_free(trace_px);
676 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
677 return;
678 }
680 if (reached_screen_boundary) {
681 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."));
682 }
684 GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
685 GDK_COLORSPACE_RGB,
686 TRUE,
687 8, width, height, width * 4,
688 (GdkPixbufDestroyNotify)g_free,
689 NULL);
691 NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
693 do_trace(pixbuf, desktop, inverted_affine);
695 g_free(trace_px);
697 sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area"));
698 }
700 static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
701 {
702 gint ret = FALSE;
704 switch (event->type) {
705 case GDK_BUTTON_PRESS:
706 break;
707 // motion and release are always on root (why?)
708 default:
709 break;
710 }
712 if (((SPEventContextClass *) parent_class)->item_handler) {
713 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
714 }
716 return ret;
717 }
719 static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event)
720 {
721 gint ret = FALSE;
722 switch (event->type) {
723 case GDK_BUTTON_PRESS:
724 if ( event->button.button == 1 ) {
725 sp_flood_do_flood_fill(event_context, event);
727 ret = TRUE;
728 }
729 break;
730 case GDK_KEY_PRESS:
731 switch (get_group0_keyval (&event->key)) {
732 case GDK_Up:
733 case GDK_Down:
734 case GDK_KP_Up:
735 case GDK_KP_Down:
736 // prevent the zoom field from activation
737 if (!MOD__CTRL_ONLY)
738 ret = TRUE;
739 break;
740 default:
741 break;
742 }
743 break;
744 default:
745 break;
746 }
748 if (!ret) {
749 if (((SPEventContextClass *) parent_class)->root_handler) {
750 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
751 }
752 }
754 return ret;
755 }
758 static void sp_flood_finish(SPFloodContext *rc)
759 {
760 rc->_message_context->clear();
762 if ( rc->item != NULL ) {
763 SPDesktop * desktop;
765 desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
767 SP_OBJECT(rc->item)->updateRepr();
769 sp_canvas_end_forced_full_redraws(desktop->canvas);
771 sp_desktop_selection(desktop)->set(rc->item);
772 sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
773 _("Fill bounded area"));
775 rc->item = NULL;
776 }
777 }
779 void flood_channels_changed(GtkComboBox *cbox, GtkWidget *tbl)
780 {
781 prefs_set_int_attribute("tools.paintbucket", "channels", (gint)gtk_combo_box_get_active(cbox));
782 }
784 /*
785 Local Variables:
786 mode:c++
787 c-file-style:"stroustrup"
788 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
789 indent-tabs-mode:nil
790 fill-column:99
791 End:
792 */
793 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :