#define __SP_FLOOD_CONTEXT_C__ /** @file * @brief Bucket fill drawing context, works by bitmap filling an area on a rendered version * of the current display and then tracing the result using potrace. */ /* Author: * Lauris Kaplinski <lauris@kaplinski.com> * bulia byak <buliabyak@users.sf.net> * John Bintz <jcoswell@coswellproductions.org> * * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl> * Copyright (C) 2000-2005 authors * Copyright (C) 2000-2001 Ximian, Inc. * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <gdk/gdkkeysyms.h> #include <queue> #include <deque> #include "macros.h" #include "display/sp-canvas.h" #include "document.h" #include "sp-namedview.h" #include "sp-object.h" #include "sp-rect.h" #include "selection.h" #include "desktop-handles.h" #include "desktop.h" #include "desktop-style.h" #include "message-stack.h" #include "message-context.h" #include "pixmaps/cursor-paintbucket.xpm" #include "flood-context.h" #include "sp-metrics.h" #include <glibmm/i18n.h> #include "object-edit.h" #include "xml/repr.h" #include "xml/node-event-vector.h" #include "preferences.h" #include "context-fns.h" #include "rubberband.h" #include "shape-editor.h" #include "display/nr-arena-item.h" #include "display/nr-arena.h" #include "display/nr-arena-image.h" #include "display/canvas-arena.h" #include "libnr/nr-pixops.h" #include "libnr/nr-matrix-translate-ops.h" #include "libnr/nr-scale-ops.h" #include "libnr/nr-scale-translate-ops.h" #include "libnr/nr-translate-matrix-ops.h" #include "libnr/nr-translate-scale-ops.h" #include "libnr/nr-matrix-ops.h" #include <2geom/pathvector.h> #include "sp-item.h" #include "sp-root.h" #include "sp-defs.h" #include "sp-path.h" #include "splivarot.h" #include "livarot/Path.h" #include "livarot/Shape.h" #include "svg/svg.h" #include "color.h" #include "trace/trace.h" #include "trace/imagemap.h" #include "trace/potrace/inkscape-potrace.h" static void sp_flood_context_class_init(SPFloodContextClass *klass); static void sp_flood_context_init(SPFloodContext *flood_context); static void sp_flood_context_dispose(GObject *object); static void sp_flood_context_setup(SPEventContext *ec); static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event); static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event); static void sp_flood_finish(SPFloodContext *rc); static SPEventContextClass *parent_class; GtkType sp_flood_context_get_type() { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(SPFloodContextClass), NULL, NULL, (GClassInitFunc) sp_flood_context_class_init, NULL, NULL, sizeof(SPFloodContext), 4, (GInstanceInitFunc) sp_flood_context_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPFloodContext", &info, (GTypeFlags) 0); } return type; } static void sp_flood_context_class_init(SPFloodContextClass *klass) { GObjectClass *object_class = (GObjectClass *) klass; SPEventContextClass *event_context_class = (SPEventContextClass *) klass; parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass); object_class->dispose = sp_flood_context_dispose; event_context_class->setup = sp_flood_context_setup; event_context_class->root_handler = sp_flood_context_root_handler; event_context_class->item_handler = sp_flood_context_item_handler; } static void sp_flood_context_init(SPFloodContext *flood_context) { SPEventContext *event_context = SP_EVENT_CONTEXT(flood_context); event_context->cursor_shape = cursor_paintbucket_xpm; event_context->hot_x = 11; event_context->hot_y = 30; event_context->xp = 0; event_context->yp = 0; event_context->tolerance = 4; event_context->within_tolerance = false; event_context->item_to_select = NULL; flood_context->item = NULL; new (&flood_context->sel_changed_connection) sigc::connection(); } static void sp_flood_context_dispose(GObject *object) { SPFloodContext *rc = SP_FLOOD_CONTEXT(object); SPEventContext *ec = SP_EVENT_CONTEXT(object); rc->sel_changed_connection.disconnect(); rc->sel_changed_connection.~connection(); delete ec->shape_editor; ec->shape_editor = NULL; /* fixme: This is necessary because we do not grab */ if (rc->item) { sp_flood_finish(rc); } if (rc->_message_context) { delete rc->_message_context; } G_OBJECT_CLASS(parent_class)->dispose(object); } /** \brief Callback that processes the "changed" signal on the selection; destroys old and creates new knotholder */ 00169 void sp_flood_context_selection_changed(Inkscape::Selection *selection, gpointer data) { SPFloodContext *rc = SP_FLOOD_CONTEXT(data); SPEventContext *ec = SP_EVENT_CONTEXT(rc); ec->shape_editor->unset_item(SH_KNOTHOLDER); SPItem *item = selection->singleItem(); ec->shape_editor->set_item(item, SH_KNOTHOLDER); } static void sp_flood_context_setup(SPEventContext *ec) { SPFloodContext *rc = SP_FLOOD_CONTEXT(ec); if (((SPEventContextClass *) parent_class)->setup) { ((SPEventContextClass *) parent_class)->setup(ec); } ec->shape_editor = new ShapeEditor(ec->desktop); SPItem *item = sp_desktop_selection(ec->desktop)->singleItem(); if (item) { ec->shape_editor->set_item(item, SH_KNOTHOLDER); } rc->sel_changed_connection.disconnect(); rc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged( sigc::bind(sigc::ptr_fun(&sp_flood_context_selection_changed), (gpointer)rc) ); rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack()); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool("/tools/paintbucket/selcue")) { rc->enableSelectionCue(); } } /** * \brief Merge a pixel with the background color. * \param orig The pixel to merge with the background. * \param bg The background color. * \param base The pixel to merge the original and background into. */ inline static void 00214 merge_pixel_with_background (unsigned char *orig, unsigned char *bg, unsigned char *base) { int precalc_bg_alpha = (255 * (255 - bg[3])) / 255; for (int i = 0; i < 3; i++) { base[i] = precalc_bg_alpha + (bg[i] * bg[3]) / 255; base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255; } } /** * \brief Get the pointer to a pixel in a pixel buffer. * \param px The pixel buffer. * \param x The X coordinate. * \param y The Y coordinate. * \param width The width of the pixel buffer. */ 00232 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) { return px + (x + y * width) * 4; } inline unsigned char * get_trace_pixel(guchar *trace_px, int x, int y, int width) { return trace_px + (x + y * width); } /** * \brief Generate the list of trace channel selection entries. */ 00243 GList * flood_channels_dropdown_items_list() { GList *glist = NULL; glist = g_list_append (glist, _("Visible Colors")); glist = g_list_append (glist, _("Red")); glist = g_list_append (glist, _("Green")); glist = g_list_append (glist, _("Blue")); glist = g_list_append (glist, _("Hue")); glist = g_list_append (glist, _("Saturation")); glist = g_list_append (glist, _("Lightness")); glist = g_list_append (glist, _("Alpha")); return glist; } /** * \brief Generate the list of autogap selection entries. */ 00261 GList * flood_autogap_dropdown_items_list() { GList *glist = NULL; glist = g_list_append (glist, _("None")); glist = g_list_append (glist, _("Small")); glist = g_list_append (glist, _("Medium")); glist = g_list_append (glist, _("Large")); return glist; } /** * \brief Compare a pixel in a pixel buffer with another pixel to determine if a point should be included in the fill operation. * \param check The pixel in the pixel buffer to check. * \param orig The original selected pixel to use as the fill target color. * \param merged_orig_pixel The original pixel merged with the background. * \param dtc The desktop background color. * \param threshold The fill threshold. * \param method The fill method to use as defined in PaintBucketChannels. */ 00281 static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *merged_orig_pixel, unsigned char *dtc, int threshold, PaintBucketChannels method) { int diff = 0; float hsl_check[3], hsl_orig[3]; if ((method == FLOOD_CHANNELS_H) || (method == FLOOD_CHANNELS_S) || (method == FLOOD_CHANNELS_L)) { sp_color_rgb_to_hsl_floatv(hsl_check, check[0] / 255.0, check[1] / 255.0, check[2] / 255.0); sp_color_rgb_to_hsl_floatv(hsl_orig, orig[0] / 255.0, orig[1] / 255.0, orig[2] / 255.0); } switch (method) { case FLOOD_CHANNELS_ALPHA: return ((int)abs(check[3] - orig[3]) <= threshold); case FLOOD_CHANNELS_R: return ((int)abs(check[0] - orig[0]) <= threshold); case FLOOD_CHANNELS_G: return ((int)abs(check[1] - orig[1]) <= threshold); case FLOOD_CHANNELS_B: return ((int)abs(check[2] - orig[2]) <= threshold); case FLOOD_CHANNELS_RGB: unsigned char merged_check[3]; merge_pixel_with_background(check, dtc, merged_check); for (int i = 0; i < 3; i++) { diff += (int)abs(merged_check[i] - merged_orig_pixel[i]); } return ((diff / 3) <= ((threshold * 3) / 4)); case FLOOD_CHANNELS_H: return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold); case FLOOD_CHANNELS_S: return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold); case FLOOD_CHANNELS_L: return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold); } return false; } enum { PIXEL_CHECKED = 1, PIXEL_QUEUED = 2, PIXEL_PAINTABLE = 4, PIXEL_NOT_PAINTABLE = 8, PIXEL_COLORED = 16 }; static inline bool is_pixel_checked(unsigned char *t) { return (*t & PIXEL_CHECKED) == PIXEL_CHECKED; } static inline bool is_pixel_queued(unsigned char *t) { return (*t & PIXEL_QUEUED) == PIXEL_QUEUED; } static inline bool is_pixel_paintability_checked(unsigned char *t) { return !((*t & PIXEL_PAINTABLE) == 0) && ((*t & PIXEL_NOT_PAINTABLE) == 0); } static inline bool is_pixel_paintable(unsigned char *t) { return (*t & PIXEL_PAINTABLE) == PIXEL_PAINTABLE; } static inline bool is_pixel_colored(unsigned char *t) { return (*t & PIXEL_COLORED) == PIXEL_COLORED; } static inline void mark_pixel_checked(unsigned char *t) { *t |= PIXEL_CHECKED; } static inline void mark_pixel_unchecked(unsigned char *t) { *t ^= PIXEL_CHECKED; } static inline void mark_pixel_queued(unsigned char *t) { *t |= PIXEL_QUEUED; } static inline void mark_pixel_paintable(unsigned char *t) { *t |= PIXEL_PAINTABLE; *t ^= PIXEL_NOT_PAINTABLE; } static inline void mark_pixel_not_paintable(unsigned char *t) { *t |= PIXEL_NOT_PAINTABLE; *t ^= PIXEL_PAINTABLE; } static inline void mark_pixel_colored(unsigned char *t) { *t |= PIXEL_COLORED; } static inline void clear_pixel_paintability(unsigned char *t) { *t ^= PIXEL_PAINTABLE; *t ^= PIXEL_NOT_PAINTABLE; } 00347 struct bitmap_coords_info { bool is_left; unsigned int x; unsigned int y; int y_limit; unsigned int width; unsigned int height; unsigned int threshold; unsigned int radius; PaintBucketChannels method; unsigned char *dtc; unsigned char *merged_orig_pixel; Geom::Rect bbox; Geom::Rect screen; unsigned int max_queue_size; unsigned int current_step; }; /** * \brief Check if a pixel can be included in the fill. * \param px The rendered pixel buffer to check. * \param trace_t The pixel in the trace pixel buffer to check or mark. * \param x The X coordinate. * \param y The y coordinate. * \param orig_color The original selected pixel to use as the fill target color. * \param bci The bitmap_coords_info structure. */ 00374 inline static bool check_if_pixel_is_paintable(guchar *px, unsigned char *trace_t, int x, int y, unsigned char *orig_color, bitmap_coords_info bci) { if (is_pixel_paintability_checked(trace_t)) { return is_pixel_paintable(trace_t); } else { unsigned char *t = get_pixel(px, x, y, bci.width); if (compare_pixels(t, orig_color, bci.merged_orig_pixel, bci.dtc, bci.threshold, bci.method)) { mark_pixel_paintable(trace_t); return true; } else { mark_pixel_not_paintable(trace_t); return false; } } } /** * \brief Perform the bitmap-to-vector tracing and place the traced path onto the document. * \param px The trace pixel buffer to trace to SVG. * \param desktop The desktop on which to place the final SVG path. * \param transform The transform to apply to the final SVG path. * \param union_with_selection If true, merge the final SVG path with the current selection. */ 00396 static void do_trace(bitmap_coords_info bci, guchar *trace_px, SPDesktop *desktop, Geom::Matrix transform, unsigned int min_x, unsigned int max_x, unsigned int min_y, unsigned int max_y, bool union_with_selection) { SPDocument *document = sp_desktop_document(desktop); unsigned char *trace_t; GrayMap *gray_map = GrayMapCreate((max_x - min_x + 1), (max_y - min_y + 1)); unsigned int gray_map_y = 0; for (unsigned int y = min_y; y <= max_y; y++) { unsigned long *gray_map_t = gray_map->rows[gray_map_y]; trace_t = get_trace_pixel(trace_px, min_x, y, bci.width); for (unsigned int x = min_x; x <= max_x; x++) { *gray_map_t = is_pixel_colored(trace_t) ? GRAYMAP_BLACK : GRAYMAP_WHITE; gray_map_t++; trace_t++; } gray_map_y++; } Inkscape::Trace::Potrace::PotraceTracingEngine pte; pte.keepGoing = 1; std::vector<Inkscape::Trace::TracingEngineResult> results = pte.traceGrayMap(gray_map); gray_map->destroy(gray_map); Inkscape::XML::Node *layer_repr = SP_GROUP(desktop->currentLayer())->repr; Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc()); long totalNodeCount = 0L; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); double offset = prefs->getDouble("/tools/paintbucket/offset", 0.0); for (unsigned int i=0 ; i<results.size() ; i++) { Inkscape::Trace::TracingEngineResult result = results[i]; totalNodeCount += result.getNodeCount(); Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path"); /* Set style */ sp_desktop_apply_style_tool (desktop, pathRepr, "/tools/paintbucket", false); Geom::PathVector pathv = sp_svg_read_pathv(result.getPathData().c_str()); Path *path = new Path; path->LoadPathVector(pathv); if (offset != 0) { Shape *path_shape = new Shape(); path->ConvertWithBackData(0.03); path->Fill(path_shape, 0); delete path; Shape *expanded_path_shape = new Shape(); expanded_path_shape->ConvertToShape(path_shape, fill_nonZero); path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4); expanded_path_shape->ConvertToShape(path_shape, fill_positive); Path *expanded_path = new Path(); expanded_path->Reset(); expanded_path_shape->ConvertToForme(expanded_path); expanded_path->ConvertEvenLines(1.0); expanded_path->Simplify(1.0); delete path_shape; delete expanded_path_shape; gchar *str = expanded_path->svg_dump_path(); if (str && *str) { pathRepr->setAttribute("d", str); g_free(str); } else { desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty.")); Inkscape::GC::release(pathRepr); g_free(str); return; } delete expanded_path; } else { gchar *str = path->svg_dump_path(); delete path; pathRepr->setAttribute("d", str); g_free(str); } layer_repr->addChild(pathRepr, NULL); SPObject *reprobj = document->getObjectByRepr(pathRepr); if (reprobj) { sp_item_write_transform(SP_ITEM(reprobj), pathRepr, transform, NULL); // premultiply the item transform by the accumulated parent transform in the paste layer Geom::Matrix local (sp_item_i2doc_affine(SP_GROUP(desktop->currentLayer()))); if (!local.isIdentity()) { gchar const *t_str = pathRepr->attribute("transform"); Geom::Matrix item_t (Geom::identity()); if (t_str) sp_svg_transform_read(t_str, &item_t); item_t *= local.inverse(); // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform) gchar *affinestr=sp_svg_transform_write(item_t); pathRepr->setAttribute("transform", affinestr); g_free(affinestr); } Inkscape::Selection *selection = sp_desktop_selection(desktop); pathRepr->setPosition(-1); if (union_with_selection) { desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, ngettext("Area filled, path with <b>%d</b> node created and unioned with selection.","Area filled, path with <b>%d</b> nodes created and unioned with selection.",sp_nodes_in_path(SP_PATH(reprobj))), sp_nodes_in_path(SP_PATH(reprobj))); selection->add(reprobj); sp_selected_path_union_skip_undo(desktop); } else { desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, ngettext("Area filled, path with <b>%d</b> node created.","Area filled, path with <b>%d</b> nodes created.",sp_nodes_in_path(SP_PATH(reprobj))), sp_nodes_in_path(SP_PATH(reprobj))); selection->set(reprobj); } } Inkscape::GC::release(pathRepr); } } /** * \brief The possible return states of perform_bitmap_scanline_check() */ 00527 enum ScanlineCheckResult { SCANLINE_CHECK_OK, SCANLINE_CHECK_ABORTED, SCANLINE_CHECK_BOUNDARY }; /** * \brief Determine if the provided coordinates are within the pixel buffer limits. * \param x The X coordinate. * \param y The Y coordinate. * \param bci The bitmap_coords_info structure. */ 00539 inline static bool coords_in_range(unsigned int x, unsigned int y, bitmap_coords_info bci) { return (x < bci.width) && (y < bci.height); } #define PAINT_DIRECTION_LEFT 1 #define PAINT_DIRECTION_RIGHT 2 #define PAINT_DIRECTION_UP 4 #define PAINT_DIRECTION_DOWN 8 #define PAINT_DIRECTION_ALL 15 /** * \brief Paint a pixel or a square (if autogap is enabled) on the trace pixel buffer * \param px The rendered pixel buffer to check. * \param trace_px The trace pixel buffer. * \param orig_color The original selected pixel to use as the fill target color. * \param bci The bitmap_coords_info structure. * \param original_point_trace_t The original pixel in the trace pixel buffer to check. */ 00558 inline static unsigned int paint_pixel(guchar *px, guchar *trace_px, unsigned char *orig_color, bitmap_coords_info bci, unsigned char *original_point_trace_t) { if (bci.radius == 0) { mark_pixel_colored(original_point_trace_t); return PAINT_DIRECTION_ALL; } else { unsigned char *trace_t; bool can_paint_up = true; bool can_paint_down = true; bool can_paint_left = true; bool can_paint_right = true; for (unsigned int ty = bci.y - bci.radius; ty <= bci.y + bci.radius; ty++) { for (unsigned int tx = bci.x - bci.radius; tx <= bci.x + bci.radius; tx++) { if (coords_in_range(tx, ty, bci)) { trace_t = get_trace_pixel(trace_px, tx, ty, bci.width); if (!is_pixel_colored(trace_t)) { if (check_if_pixel_is_paintable(px, trace_t, tx, ty, orig_color, bci)) { mark_pixel_colored(trace_t); } else { if (tx < bci.x) { can_paint_left = false; } if (tx > bci.x) { can_paint_right = false; } if (ty < bci.y) { can_paint_up = false; } if (ty > bci.y) { can_paint_down = false; } } } } } } unsigned int paint_directions = 0; if (can_paint_left) { paint_directions += PAINT_DIRECTION_LEFT; } if (can_paint_right) { paint_directions += PAINT_DIRECTION_RIGHT; } if (can_paint_up) { paint_directions += PAINT_DIRECTION_UP; } if (can_paint_down) { paint_directions += PAINT_DIRECTION_DOWN; } return paint_directions; } } /** * \brief Push a point to be checked onto the bottom of the rendered pixel buffer check queue. * \param fill_queue The fill queue to add the point to. * \param max_queue_size The maximum size of the fill queue. * \param trace_t The trace pixel buffer pixel. * \param x The X coordinate. * \param y The Y coordinate. */ 00606 static void push_point_onto_queue(std::deque<Geom::Point> *fill_queue, unsigned int max_queue_size, unsigned char *trace_t, unsigned int x, unsigned int y) { if (!is_pixel_queued(trace_t)) { if ((fill_queue->size() < max_queue_size)) { fill_queue->push_back(Geom::Point(x, y)); mark_pixel_queued(trace_t); } } } /** * \brief Shift a point to be checked onto the top of the rendered pixel buffer check queue. * \param fill_queue The fill queue to add the point to. * \param max_queue_size The maximum size of the fill queue. * \param trace_t The trace pixel buffer pixel. * \param x The X coordinate. * \param y The Y coordinate. */ 00623 static void shift_point_onto_queue(std::deque<Geom::Point> *fill_queue, unsigned int max_queue_size, unsigned char *trace_t, unsigned int x, unsigned int y) { if (!is_pixel_queued(trace_t)) { if ((fill_queue->size() < max_queue_size)) { fill_queue->push_front(Geom::Point(x, y)); mark_pixel_queued(trace_t); } } } /** * \brief Scan a row in the rendered pixel buffer and add points to the fill queue as necessary. * \param fill_queue The fill queue to add the point to. * \param px The rendered pixel buffer. * \param trace_px The trace pixel buffer. * \param orig_color The original selected pixel to use as the fill target color. * \param bci The bitmap_coords_info structure. */ 00640 static ScanlineCheckResult perform_bitmap_scanline_check(std::deque<Geom::Point> *fill_queue, guchar *px, guchar *trace_px, unsigned char *orig_color, bitmap_coords_info bci, unsigned int *min_x, unsigned int *max_x) { bool aborted = false; bool reached_screen_boundary = false; bool ok; bool keep_tracing; bool initial_paint = true; unsigned char *current_trace_t = get_trace_pixel(trace_px, bci.x, bci.y, bci.width); unsigned int paint_directions; bool currently_painting_top = false; bool currently_painting_bottom = false; unsigned int top_ty = bci.y - 1; unsigned int bottom_ty = bci.y + 1; bool can_paint_top = (top_ty > 0); bool can_paint_bottom = (bottom_ty < bci.height); Geom::Point t = fill_queue->front(); do { ok = false; if (bci.is_left) { keep_tracing = (bci.x != 0); } else { keep_tracing = (bci.x < bci.width); } *min_x = MIN(*min_x, bci.x); *max_x = MAX(*max_x, bci.x); if (keep_tracing) { if (check_if_pixel_is_paintable(px, current_trace_t, bci.x, bci.y, orig_color, bci)) { paint_directions = paint_pixel(px, trace_px, orig_color, bci, current_trace_t); if (bci.radius == 0) { mark_pixel_checked(current_trace_t); if ((t[Geom::X] == bci.x) && (t[Geom::Y] == bci.y)) { fill_queue->pop_front(); t = fill_queue->front(); } } if (can_paint_top) { if (paint_directions & PAINT_DIRECTION_UP) { unsigned char *trace_t = current_trace_t - bci.width; if (!is_pixel_queued(trace_t)) { bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, top_ty, orig_color, bci); if (initial_paint) { currently_painting_top = !ok_to_paint; } if (ok_to_paint && (!currently_painting_top)) { currently_painting_top = true; push_point_onto_queue(fill_queue, bci.max_queue_size, trace_t, bci.x, top_ty); } if ((!ok_to_paint) && currently_painting_top) { currently_painting_top = false; } } } } if (can_paint_bottom) { if (paint_directions & PAINT_DIRECTION_DOWN) { unsigned char *trace_t = current_trace_t + bci.width; if (!is_pixel_queued(trace_t)) { bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, bottom_ty, orig_color, bci); if (initial_paint) { currently_painting_bottom = !ok_to_paint; } if (ok_to_paint && (!currently_painting_bottom)) { currently_painting_bottom = true; push_point_onto_queue(fill_queue, bci.max_queue_size, trace_t, bci.x, bottom_ty); } if ((!ok_to_paint) && currently_painting_bottom) { currently_painting_bottom = false; } } } } if (bci.is_left) { if (paint_directions & PAINT_DIRECTION_LEFT) { bci.x--; current_trace_t--; ok = true; } } else { if (paint_directions & PAINT_DIRECTION_RIGHT) { bci.x++; current_trace_t++; ok = true; } } initial_paint = false; } } else { if (bci.bbox.min()[Geom::X] > bci.screen.min()[Geom::X]) { aborted = true; break; } else { reached_screen_boundary = true; } } } while (ok); if (aborted) { return SCANLINE_CHECK_ABORTED; } if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; } return SCANLINE_CHECK_OK; } /** * \brief Sort the rendered pixel buffer check queue vertically. */ 00752 static bool sort_fill_queue_vertical(Geom::Point a, Geom::Point b) { return a[Geom::Y] > b[Geom::Y]; } /** * \brief Sort the rendered pixel buffer check queue horizontally. */ 00759 static bool sort_fill_queue_horizontal(Geom::Point a, Geom::Point b) { return a[Geom::X] > b[Geom::X]; } /** * \brief Perform a flood fill operation. * \param event_context The event context for this tool. * \param event The details of this event. * \param union_with_selection If true, union the new fill with the current selection. * \param is_point_fill If false, use the Rubberband "touch selection" to get the initial points for the fill. * \param is_touch_fill If true, use only the initial contact point in the Rubberband "touch selection" as the fill target color. */ 00771 static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event, bool union_with_selection, bool is_point_fill, bool is_touch_fill) { SPDesktop *desktop = event_context->desktop; SPDocument *document = sp_desktop_document(desktop); /* Create new arena */ NRArena *arena = NRArena::create(); unsigned dkey = sp_item_display_key_new(1); sp_document_ensure_up_to_date (document); SPItem *document_root = SP_ITEM(SP_DOCUMENT_ROOT(document)); Geom::OptRect bbox = document_root->getBounds(Geom::identity()); if (!bbox) { desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill.")); return; } double zoom_scale = desktop->current_zoom(); // Render 160% of the physical display to the render pixel buffer, so that available // fill areas off the screen can be included in the fill. double padding = 1.6; Geom::Rect screen = desktop->get_display_area(); unsigned int width = (int)ceil(screen.width() * zoom_scale * padding); unsigned int height = (int)ceil(screen.height() * zoom_scale * padding); Geom::Point origin(screen.min()[Geom::X], sp_document_height(document) - screen.height() - screen.min()[Geom::Y]); origin[Geom::X] = origin[Geom::X] + (screen.width() * ((1 - padding) / 2)); origin[Geom::Y] = origin[Geom::Y] + (screen.height() * ((1 - padding) / 2)); Geom::Scale scale(zoom_scale, zoom_scale); Geom::Matrix affine = scale * Geom::Translate(-origin * scale); /* Create ArenaItems and set transform */ NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(document)), arena, dkey, SP_ITEM_SHOW_DISPLAY); nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine); NRGC gc(NULL); gc.transform.setIdentity(); NRRectL final_bbox; final_bbox.x0 = 0; final_bbox.y0 = 0; //row; final_bbox.x1 = width; final_bbox.y1 = height; //row + num_rows; nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE); guchar *px = g_new(guchar, 4 * width * height); NRPixBlock B; nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N, final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1, px, 4 * width, FALSE, FALSE ); SPNamedView *nv = sp_desktop_namedview(desktop); unsigned long bgcolor = nv->pagecolor; unsigned char dtc[4]; dtc[0] = NR_RGBA32_R(bgcolor); dtc[1] = NR_RGBA32_G(bgcolor); dtc[2] = NR_RGBA32_B(bgcolor); dtc[3] = NR_RGBA32_A(bgcolor); for (unsigned int fy = 0; fy < height; fy++) { guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs; for (unsigned int fx = 0; fx < width; fx++) { for (int i = 0; i < 4; i++) { *p++ = dtc[i]; } } } nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE ); nr_pixblock_release(&B); // Hide items sp_item_invoke_hide(SP_ITEM(sp_document_root(document)), dkey); nr_object_unref((NRObject *) arena); guchar *trace_px = g_new(guchar, width * height); memset(trace_px, 0x00, width * height); std::deque<Geom::Point> fill_queue; std::queue<Geom::Point> color_queue; std::vector<Geom::Point> fill_points; bool aborted = false; int y_limit = height - 1; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); PaintBucketChannels method = (PaintBucketChannels) prefs->getInt("/tools/paintbucket/channels", 0); int threshold = prefs->getIntLimited("/tools/paintbucket/threshold", 1, 0, 100); switch(method) { case FLOOD_CHANNELS_ALPHA: case FLOOD_CHANNELS_RGB: case FLOOD_CHANNELS_R: case FLOOD_CHANNELS_G: case FLOOD_CHANNELS_B: threshold = (255 * threshold) / 100; break; case FLOOD_CHANNELS_H: case FLOOD_CHANNELS_S: case FLOOD_CHANNELS_L: break; } bitmap_coords_info bci; bci.y_limit = y_limit; bci.width = width; bci.height = height; bci.threshold = threshold; bci.method = method; bci.bbox = *bbox; bci.screen = screen; bci.dtc = dtc; bci.radius = prefs->getIntLimited("/tools/paintbucket/autogap", 0, 0, 3); bci.max_queue_size = (width * height) / 4; bci.current_step = 0; if (is_point_fill) { fill_points.push_back(Geom::Point(event->button.x, event->button.y)); } else { Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop); fill_points = r->getPoints(); } for (unsigned int i = 0; i < fill_points.size(); i++) { Geom::Point pw = Geom::Point(fill_points[i][Geom::X] / zoom_scale, sp_document_height(document) + (fill_points[i][Geom::Y] / zoom_scale)) * affine; pw[Geom::X] = (int)MIN(width - 1, MAX(0, pw[Geom::X])); pw[Geom::Y] = (int)MIN(height - 1, MAX(0, pw[Geom::Y])); if (is_touch_fill) { if (i == 0) { color_queue.push(pw); } else { unsigned char *trace_t = get_trace_pixel(trace_px, (int)pw[Geom::X], (int)pw[Geom::Y], width); push_point_onto_queue(&fill_queue, bci.max_queue_size, trace_t, (int)pw[Geom::X], (int)pw[Geom::Y]); } } else { color_queue.push(pw); } } bool reached_screen_boundary = false; bool first_run = true; unsigned long sort_size_threshold = 5; unsigned int min_y = height; unsigned int max_y = 0; unsigned int min_x = width; unsigned int max_x = 0; while (!color_queue.empty() && !aborted) { Geom::Point color_point = color_queue.front(); color_queue.pop(); int cx = (int)color_point[Geom::X]; int cy = (int)color_point[Geom::Y]; unsigned char *orig_px = get_pixel(px, cx, cy, width); unsigned char orig_color[4]; for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; } unsigned char merged_orig[3]; merge_pixel_with_background(orig_color, dtc, merged_orig); bci.merged_orig_pixel = merged_orig; unsigned char *trace_t = get_trace_pixel(trace_px, cx, cy, width); if (!is_pixel_checked(trace_t) && !is_pixel_colored(trace_t)) { if (check_if_pixel_is_paintable(px, trace_px, cx, cy, orig_color, bci)) { shift_point_onto_queue(&fill_queue, bci.max_queue_size, trace_t, cx, cy); if (!first_run) { for (unsigned int y = 0; y < height; y++) { trace_t = get_trace_pixel(trace_px, 0, y, width); for (unsigned int x = 0; x < width; x++) { clear_pixel_paintability(trace_t); trace_t++; } } } first_run = false; } } unsigned long old_fill_queue_size = fill_queue.size(); while (!fill_queue.empty() && !aborted) { Geom::Point cp = fill_queue.front(); if (bci.radius == 0) { unsigned long new_fill_queue_size = fill_queue.size(); /* * To reduce the number of points in the fill queue, periodically * resort all of the points in the queue so that scanline checks * can complete more quickly. A point cannot be checked twice * in a normal scanline checks, so forcing scanline checks to start * from one corner of the rendered area as often as possible * will reduce the number of points that need to be checked and queued. */ if (new_fill_queue_size > sort_size_threshold) { if (new_fill_queue_size > old_fill_queue_size) { std::sort(fill_queue.begin(), fill_queue.end(), sort_fill_queue_vertical); std::deque<Geom::Point>::iterator start_sort = fill_queue.begin(); std::deque<Geom::Point>::iterator end_sort = fill_queue.begin(); unsigned int sort_y = (unsigned int)cp[Geom::Y]; unsigned int current_y = sort_y; for (std::deque<Geom::Point>::iterator i = fill_queue.begin(); i != fill_queue.end(); i++) { Geom::Point current = *i; current_y = (unsigned int)current[Geom::Y]; if (current_y != sort_y) { if (start_sort != end_sort) { std::sort(start_sort, end_sort, sort_fill_queue_horizontal); } sort_y = current_y; start_sort = i; } end_sort = i; } if (start_sort != end_sort) { std::sort(start_sort, end_sort, sort_fill_queue_horizontal); } cp = fill_queue.front(); } } old_fill_queue_size = new_fill_queue_size; } fill_queue.pop_front(); int x = (int)cp[Geom::X]; int y = (int)cp[Geom::Y]; min_y = MIN((unsigned int)y, min_y); max_y = MAX((unsigned int)y, max_y); unsigned char *trace_t = get_trace_pixel(trace_px, x, y, width); if (!is_pixel_checked(trace_t)) { mark_pixel_checked(trace_t); if (y == 0) { if (bbox->min()[Geom::Y] > screen.min()[Geom::Y]) { aborted = true; break; } else { reached_screen_boundary = true; } } if (y == y_limit) { if (bbox->max()[Geom::Y] < screen.max()[Geom::Y]) { aborted = true; break; } else { reached_screen_boundary = true; } } bci.is_left = true; bci.x = x; bci.y = y; ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci, &min_x, &max_x); switch (result) { case SCANLINE_CHECK_ABORTED: aborted = true; break; case SCANLINE_CHECK_BOUNDARY: reached_screen_boundary = true; break; default: break; } if (bci.x < width) { trace_t++; if (!is_pixel_checked(trace_t) && !is_pixel_queued(trace_t)) { mark_pixel_checked(trace_t); bci.is_left = false; bci.x = x + 1; result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci, &min_x, &max_x); switch (result) { case SCANLINE_CHECK_ABORTED: aborted = true; break; case SCANLINE_CHECK_BOUNDARY: reached_screen_boundary = true; break; default: break; } } } } bci.current_step++; if (bci.current_step > bci.max_queue_size) { aborted = true; } } } g_free(px); if (aborted) { g_free(trace_px); desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill.")); return; } if (reached_screen_boundary) { 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.")); } unsigned int trace_padding = bci.radius + 1; if (min_y > trace_padding) { min_y -= trace_padding; } if (max_y < (y_limit - trace_padding)) { max_y += trace_padding; } if (min_x > trace_padding) { min_x -= trace_padding; } if (max_x < (width - 1 - trace_padding)) { max_x += trace_padding; } Geom::Point min_start = Geom::Point(min_x, min_y); affine = scale * Geom::Translate(-origin * scale - min_start); Geom::Matrix inverted_affine = Geom::Matrix(affine).inverse(); do_trace(bci, trace_px, desktop, inverted_affine, min_x, max_x, min_y, max_y, union_with_selection); g_free(trace_px); sp_document_done(document, SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area")); } static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event) { gint ret = FALSE; SPDesktop *desktop = event_context->desktop; switch (event->type) { case GDK_BUTTON_PRESS: if ((event->button.state & GDK_CONTROL_MASK) && event->button.button == 1 && !event_context->space_panning) { Geom::Point const button_w(event->button.x, event->button.y); SPItem *item = sp_event_context_find_item (desktop, button_w, TRUE, TRUE); Inkscape::XML::Node *pathRepr = SP_OBJECT_REPR(item); /* Set style */ sp_desktop_apply_style_tool (desktop, pathRepr, "/tools/paintbucket", false); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET, _("Set style on object")); ret = TRUE; } break; default: break; } if (((SPEventContextClass *) parent_class)->item_handler) { ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event); } return ret; } static gint sp_flood_context_root_handler(SPEventContext *event_context, GdkEvent *event) { static bool dragging; gint ret = FALSE; SPDesktop *desktop = event_context->desktop; switch (event->type) { case GDK_BUTTON_PRESS: if (event->button.button == 1 && !event_context->space_panning) { if (!(event->button.state & GDK_CONTROL_MASK)) { Geom::Point const button_w(event->button.x, event->button.y); if (Inkscape::have_viable_layer(desktop, event_context->defaultMessageContext())) { // save drag origin event_context->xp = (gint) button_w[Geom::X]; event_context->yp = (gint) button_w[Geom::Y]; event_context->within_tolerance = true; dragging = true; Geom::Point const p(desktop->w2d(button_w)); Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH); Inkscape::Rubberband::get(desktop)->start(desktop, p); } } } case GDK_MOTION_NOTIFY: if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK ) && !event_context->space_panning) { if ( event_context->within_tolerance && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance ) && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) { break; // do not drag if we're within tolerance from origin } event_context->within_tolerance = false; Geom::Point const motion_pt(event->motion.x, event->motion.y); Geom::Point const p(desktop->w2d(motion_pt)); if (Inkscape::Rubberband::get(desktop)->is_started()) { Inkscape::Rubberband::get(desktop)->move(p); event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> areas to add to fill, hold <b>Alt</b> for touch fill")); gobble_motion_events(GDK_BUTTON1_MASK); } } break; case GDK_BUTTON_RELEASE: if (event->button.button == 1 && !event_context->space_panning) { Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop); if (r->is_started()) { // set "busy" cursor desktop->setWaitingCursor(); if (SP_IS_EVENT_CONTEXT(event_context)) { // Since setWaitingCursor runs main loop iterations, we may have already left this tool! // So check if the tool is valid before doing anything dragging = false; bool is_point_fill = event_context->within_tolerance; bool is_touch_fill = event->button.state & GDK_MOD1_MASK; sp_flood_do_flood_fill(event_context, event, event->button.state & GDK_SHIFT_MASK, is_point_fill, is_touch_fill); desktop->clearWaitingCursor(); // restore cursor when done; note that it may already be different if e.g. user // switched to another tool during interruptible tracing or drawing, in which case do nothing ret = TRUE; } r->stop(); if (SP_IS_EVENT_CONTEXT(event_context)) { event_context->defaultMessageContext()->clear(); } } } break; case GDK_KEY_PRESS: switch (get_group0_keyval (&event->key)) { case GDK_Up: case GDK_Down: case GDK_KP_Up: case GDK_KP_Down: // prevent the zoom field from activation if (!MOD__CTRL_ONLY) ret = TRUE; break; default: break; } break; default: break; } if (!ret) { if (((SPEventContextClass *) parent_class)->root_handler) { ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event); } } return ret; } static void sp_flood_finish(SPFloodContext *rc) { rc->_message_context->clear(); if ( rc->item != NULL ) { SPDesktop * desktop; desktop = SP_EVENT_CONTEXT_DESKTOP(rc); SP_OBJECT(rc->item)->updateRepr(); sp_canvas_end_forced_full_redraws(desktop->canvas); sp_desktop_selection(desktop)->set(rc->item); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET, _("Fill bounded area")); rc->item = NULL; } } void flood_channels_set_channels( gint channels ) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); prefs->setInt("/tools/paintbucket/channels", channels); } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :