Code

Some additional Paint Bucket optimizations and cleanup
[inkscape.git] / src / flood-context.cpp
index 7724355aa4143db0373efc59a2151b701798568b..2a18b3e3392f5d6874189f5d390447e00835d5b4 100644 (file)
@@ -1,24 +1,25 @@
 #define __SP_FLOOD_CONTEXT_C__
 
 /*
- * Flood fill drawing context
- *
- * 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
- */
+* Flood fill drawing context
+*
+* 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
+*/
 
 #include "config.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <queue>
+#include <deque>
 
 #include "macros.h"
 #include "display/sp-canvas.h"
@@ -27,9 +28,7 @@
 #include "sp-object.h"
 #include "sp-rect.h"
 #include "selection.h"
-#include "selection-chemistry.h"
 #include "desktop-handles.h"
-#include "snap.h"
 #include "desktop.h"
 #include "desktop-style.h"
 #include "message-stack.h"
 #include "xml/node-event-vector.h"
 #include "prefs-utils.h"
 #include "context-fns.h"
+#include "rubberband.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-rotate-ops.h"
 #include "libnr/nr-matrix-translate-ops.h"
-#include "libnr/nr-rotate-fns.h"
 #include "libnr/nr-scale-ops.h"
 #include "libnr/nr-scale-translate-ops.h"
 #include "libnr/nr-translate-matrix-ops.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 "libnr/n-art-bpath.h"
 #include "svg/svg.h"
+#include "color.h"
 
 #include "trace/trace.h"
 #include "trace/potrace/inkscape-potrace.h"
@@ -125,7 +125,7 @@ static void sp_flood_context_init(SPFloodContext *flood_context)
     event_context->hot_y = 30;
     event_context->xp = 0;
     event_context->yp = 0;
-    event_context->tolerance = 0;
+    event_context->tolerance = 4;
     event_context->within_tolerance = false;
     event_context->item_to_select = NULL;
 
@@ -223,69 +223,137 @@ static void sp_flood_context_setup(SPEventContext *ec)
     rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 }
 
-static void merge_pixel_with_background(unsigned char *orig, unsigned char *bg, unsigned char *base) {
-  for (int i = 0; i < 3; i++) { 
-    base[i] = (255 * (255 - bg[3])) / 255 + (bg[i] * bg[3]) / 255;
-    base[i] = (base[i] * (255 - orig[3])) / 255 + (orig[i] * orig[3]) / 255;
-  }
-  base[3] = 255;
+inline static void
+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;
+    }
 }
 
 inline unsigned char * get_pixel(guchar *px, int x, int y, int width) {
-  return px + (x + y * width) * 4;
+    return px + (x + y * width) * 4;
 }
 
-enum PaintBucketChannels {
-    FLOOD_CHANNELS_RGB,
-    FLOOD_CHANNELS_ALPHA
-};
-
 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;
 }
 
-static bool compare_pixels(unsigned char *check, unsigned char *orig, unsigned char *dtc, int tolerance, PaintBucketChannels method) {
-  int diff = 0;
-  
-  switch (method) {
-    case FLOOD_CHANNELS_ALPHA:
-      return ((int)abs(check[3] - orig[3]) <= (tolerance / 4));
-    case FLOOD_CHANNELS_RGB:
-      unsigned char merged_orig[4];
-      unsigned char merged_check[4];
-      
-      merge_pixel_with_background(orig, dtc, merged_orig);
-      merge_pixel_with_background(check, dtc, merged_check);
-      
-      for (int i = 0; i < 3; i++) {
-        diff += (int)abs(merged_check[i] - merged_orig[i]);
-      }
-      return ((diff / 3) <= ((tolerance * 3) / 4));
-  }
-  
-  return false;
+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;
 }
 
-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) {
-  unsigned char *t = get_pixel(px, x, y, width);
-  if (compare_pixels(t, orig, dtc, tolerance, method)) {
-    unsigned char *trace_t = get_pixel(trace_px, x, y, width);
-    if (trace_t[3] != 255) {
-      if (fill_switch) {
-        fill_queue->push(NR::Point(x, y));
-      }
+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;
-  }
-  return true;
 }
 
-static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform) {
+static inline bool is_pixel_checked(unsigned char *t) { return t[0] == 1; }
+static inline bool is_pixel_queued(unsigned char *t) { return t[1] == 1; }
+static inline bool is_pixel_paintability_checked(unsigned char *t) { return t[2] != 0; }
+static inline bool is_pixel_paintable(unsigned char *t) { return t[2] == 1; }
+static inline bool is_pixel_colored(unsigned char *t) { return t[3] == 255; }
+
+static inline void mark_pixel_checked(unsigned char *t) { t[0] = 1; }
+static inline void mark_pixel_unchecked(unsigned char *t) { t[0] = 0; }
+static inline void mark_pixel_queued(unsigned char *t) { t[1] = 1; }
+static inline void mark_pixel_paintable(unsigned char *t) { t[2] = 1; }
+static inline void mark_pixel_not_paintable(unsigned char *t) { t[2] = 2; }
+static inline void mark_pixel_colored(unsigned char *t) { t[3] = 255; }
+
+static inline void clear_pixel_paintability(unsigned char *t) { t[2] = 0; }
+
+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;
+    NR::Rect bbox;
+    NR::Rect screen;
+    unsigned int max_queue_size;
+};
+
+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;
+        }
+    }
+}
+
+static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform, bool union_with_selection) {
     SPDocument *document = sp_desktop_document(desktop);
     
     Inkscape::Trace::Potrace::PotraceTracingEngine pte;
@@ -315,33 +383,50 @@ static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform) {
         NArtBpath *bpath = sp_svg_read_path(result.getPathData().c_str());
         Path *path = bpath_to_Path(bpath);
         g_free(bpath);
+
+        if (offset != 0) {
         
-        Shape *path_shape = new Shape();
+            Shape *path_shape = new Shape();
         
-        path->ConvertWithBackData(0.03);
-        path->Fill(path_shape, 0);
-        delete path;
+            path->ConvertWithBackData(0.03);
+            path->Fill(path_shape, 0);
+            delete path;
         
-        Shape *expanded_path_shape = new Shape();
+            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);
+            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();
+            Path *expanded_path = new Path();
         
-        expanded_path->Reset();
-        expanded_path_shape->ConvertToForme(expanded_path);
-        expanded_path->ConvertEvenLines(1.0);
-        expanded_path->Simplify(1.0);
+            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;
+            delete path_shape;
+            delete expanded_path_shape;
         
-        gchar *str = expanded_path->svg_dump_path();
-        delete expanded_path;
-        pathRepr->setAttribute("d", str);
-        g_free(str);
+            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);
 
@@ -364,69 +449,175 @@ static void do_trace(GdkPixbuf *px, SPDesktop *desktop, NR::Matrix transform) {
             }
 
             Inkscape::Selection *selection = sp_desktop_selection(desktop);
-            selection->set(reprobj);
+
             pathRepr->setPosition(-1);
+
+            if (union_with_selection) {
+                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)));
+                selection->add(reprobj);
+                sp_selected_path_union_skip_undo();
+            } else {
+                desktop->messageStack()->flashF(Inkscape::WARNING_MESSAGE, _("Area filled, path with <b>%d</b> nodes created."), sp_nodes_in_path(SP_PATH(reprobj)));
+                selection->set(reprobj);
+            }
+
         }
-        
+
         Inkscape::GC::release(pathRepr);
+
     }
 }
 
-struct bitmap_coords_info {
-  bool is_left;
-  int x;
-  int y;
-  int y_limit;
-  int width;
-  int tolerance;
-  PaintBucketChannels method;
-  unsigned char *dtc;
-  bool top_fill;
-  bool bottom_fill;
-  NR::Rect bbox;
-  NR::Rect screen;
-};
-
 enum ScanlineCheckResult {
-  SCANLINE_CHECK_OK,
-  SCANLINE_CHECK_ABORTED,
-  SCANLINE_CHECK_BOUNDARY
+    SCANLINE_CHECK_OK,
+    SCANLINE_CHECK_ABORTED,
+    SCANLINE_CHECK_BOUNDARY
 };
 
-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) {
+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
+
+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 (int y = -bci.radius; y <= (int)bci.radius; y++) {
+            int ty = bci.y + y;
+            for (int x = -bci.radius; x <= (int)bci.radius; x++) {
+                int tx = bci.x + x;
+                
+                if (coords_in_range(tx, ty, bci)) {
+                    trace_t = get_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 (x < 0) { can_paint_left = false; }
+                            if (x > 0) { can_paint_right = false; }
+                            if (y < 0) { can_paint_up = false; }
+                            if (y > 0) { 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;
+    }
+}
+
+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) {
     bool aborted = false;
     bool reached_screen_boundary = false;
     bool ok;
   
     bool keep_tracing;
-    unsigned char *t, *trace_t;
-  
+    bool initial_paint = true;
+    
+    unsigned char *current_trace_t = get_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 pix_width = bci.width * 4;
+    
     do {
         ok = false;
         if (bci.is_left) {
-            keep_tracing = (bci.x >= 0);
+            keep_tracing = (bci.x != 0);
         } else {
             keep_tracing = (bci.x < bci.width);
         }
         
         if (keep_tracing) {
-            t = get_pixel(px, bci.x, bci.y, bci.width);
-            if (compare_pixels(t, orig_color, bci.dtc, bci.tolerance, bci.method)) {
-                for (int i = 0; i < 4; i++) { t[i] = 255 - t[i]; }
-                trace_t = get_pixel(trace_px, bci.x, bci.y, bci.width);
-                trace_t[3] = 255; 
-                if (bci.y > 0) { 
-                    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);
+            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 (paint_directions & PAINT_DIRECTION_UP) { 
+                    unsigned int ty = bci.y - 1;
+                    if (ty > 0) {
+                        unsigned char *trace_t = current_trace_t - pix_width;
+                        if (!is_pixel_queued(trace_t)) {
+                            bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, ty, orig_color, bci);
+                            
+                            if (initial_paint) { currently_painting_top = !ok_to_paint; }
+                            
+                            if (ok_to_paint && (!currently_painting_top)) {
+                                currently_painting_top = true;
+                                if ((fill_queue->size() < bci.max_queue_size)) {
+                                    fill_queue->push_back(NR::Point(bci.x, ty));
+                                    mark_pixel_queued(trace_t);
+                                }
+                            }
+                            if ((!ok_to_paint) && currently_painting_top) {
+                                currently_painting_top = false;
+                            }
+                        }
+                    }
                 }
-                if (bci.y < bci.y_limit) { 
-                    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);
+                
+                if (paint_directions & PAINT_DIRECTION_DOWN) { 
+                    unsigned int ty = bci.y + 1;
+                    if (ty < bci.height) {
+                        unsigned char *trace_t = current_trace_t + pix_width;
+                        if (!is_pixel_queued(trace_t)) {
+                            bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, ty, orig_color, bci);
+                            
+                            if (initial_paint) { currently_painting_bottom = !ok_to_paint; }
+                            
+                            if (ok_to_paint && (!currently_painting_bottom)) {
+                                currently_painting_bottom = true;
+                                if ((fill_queue->size() < bci.max_queue_size)) {
+                                    fill_queue->push_back(NR::Point(bci.x, ty));
+                                    mark_pixel_queued(trace_t);
+                                }
+                            }
+                            if ((!ok_to_paint) && currently_painting_bottom) {
+                                currently_painting_bottom = false;
+                            }
+                        }
+                    }
                 }
+                
                 if (bci.is_left) {
-                    bci.x--;
+                    if (paint_directions & PAINT_DIRECTION_LEFT) {
+                        bci.x -= 1; current_trace_t -= 4;
+                        ok = true;
+                    }
                 } else {
-                    bci.x++;
+                    if (paint_directions & PAINT_DIRECTION_RIGHT) {
+                        bci.x += 1; current_trace_t += 4;
+                        ok = true;
+                    }
                 }
-                ok = true;
+                
+                initial_paint = false;
             }
         } else {
             if (bci.bbox.min()[NR::X] > bci.screen.min()[NR::X]) {
@@ -442,7 +633,7 @@ static ScanlineCheckResult perform_bitmap_scanline_check(std::queue<NR::Point> *
     return SCANLINE_CHECK_OK;
 }
 
-static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *event) {
+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);
 
@@ -456,8 +647,8 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
     NR::Maybe<NR::Rect> bbox = document_root->getBounds(NR::identity());
 
     if (!bbox) {
-      desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
-      return;
+        desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
+        return;
     }
     
     double zoom_scale = desktop->current_zoom();
@@ -465,12 +656,12 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
 
     NR::Rect screen = desktop->get_display_area();
 
-    int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
-    int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
+    unsigned int width = (int)ceil(screen.extent(NR::X) * zoom_scale * padding);
+    unsigned int height = (int)ceil(screen.extent(NR::Y) * zoom_scale * padding);
 
     NR::Point origin(screen.min()[NR::X],
                      sp_document_height(document) - screen.extent(NR::Y) - screen.min()[NR::Y]);
-                     
+                    
     origin[NR::X] = origin[NR::X] + (screen.extent(NR::X) * ((1 - padding) / 2));
     origin[NR::Y] = origin[NR::Y] + (screen.extent(NR::Y) * ((1 - padding) / 2));
     
@@ -493,7 +684,6 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
     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);
-    //memset(px, 0x00, 4 * width * height);
     
     NRPixBlock B;
     nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
@@ -509,13 +699,13 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
     dtc[2] = NR_RGBA32_B(bgcolor);
     dtc[3] = NR_RGBA32_A(bgcolor);
     
-    for (int fy = 0; fy < height; fy++) {
-      guchar *p = NR_PIXBLOCK_PX(&B) + fy * B.rs;
-      for (int fx = 0; fx < width; fx++) {
-        for (int i = 0; i < 4; i++) { 
-          *p++ = dtc[i];
+    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 );
@@ -527,30 +717,57 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
     nr_arena_item_unref(root);
     nr_object_unref((NRObject *) arena);
     
-    NR::Point pw = NR::Point(event->button.x / zoom_scale, sp_document_height(document) + (event->button.y / zoom_scale)) * affine;
-    
-    pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
-    pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
-
     guchar *trace_px = g_new(guchar, 4 * width * height);
     memset(trace_px, 0x00, 4 * width * height);
     
-    std::queue<NR::Point> fill_queue;
-    fill_queue.push(pw);
+    std::deque<NR::Point> fill_queue;
+    std::queue<NR::Point> color_queue;
     
-    bool aborted = false;
-    int y_limit = height - 1;
+    std::vector<NR::Point> fill_points;
     
-    unsigned char orig_color[4];
-    unsigned char *orig_px = get_pixel(px, (int)pw[NR::X], (int)pw[NR::Y], width);
-    for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
+    if (is_point_fill) {
+        fill_points.push_back(NR::Point(event->button.x, event->button.y));
+    } else {
+        Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
+        fill_points = r->getPoints();
+    }
 
-    unsigned char merged_orig[4];
+    for (unsigned int i = 0; i < fill_points.size(); i++) {
+        NR::Point pw = NR::Point(fill_points[i][NR::X] / zoom_scale, sp_document_height(document) + (fill_points[i][NR::Y] / zoom_scale)) * affine;
+        
+        pw[NR::X] = (int)MIN(width - 1, MAX(0, pw[NR::X]));
+        pw[NR::Y] = (int)MIN(height - 1, MAX(0, pw[NR::Y]));
+        
+        if (is_touch_fill) {
+            if (i == 0) {
+                color_queue.push(pw);
+            } else {
+                fill_queue.push_back(pw);
+            }
+        } else {
+            color_queue.push(pw);
+        }
+    }
+
+    bool aborted = false;
+    int y_limit = height - 1;
 
-    merge_pixel_with_background(orig_color, dtc, merged_orig);
-    
-    int tolerance = (255 * prefs_get_int_attribute_limited("tools.paintbucket", "tolerance", 1, 0, 100)) / 100;
     PaintBucketChannels method = (PaintBucketChannels)prefs_get_int_attribute("tools.paintbucket", "channels", 0);
+    int threshold = prefs_get_int_attribute_limited("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;
+      }
 
     bool reached_screen_boundary = false;
 
@@ -558,94 +775,127 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
     
     bci.y_limit = y_limit;
     bci.width = width;
-    bci.tolerance = tolerance;
+    bci.height = height;
+    bci.threshold = threshold;
     bci.method = method;
     bci.bbox = *bbox;
     bci.screen = screen;
     bci.dtc = dtc;
+    bci.radius = prefs_get_int_attribute_limited("tools.paintbucket", "autogap", 0, 0, 3);
+    bci.max_queue_size = width * height;
 
-    while (!fill_queue.empty() && !aborted) {
-      NR::Point cp = fill_queue.front();
-      fill_queue.pop();
-      unsigned char *s = get_pixel(px, (int)cp[NR::X], (int)cp[NR::Y], width);
-      
-      // same color at this point
-      if (compare_pixels(s, orig_color, dtc, tolerance, method)) {
-        int x = (int)cp[NR::X];
-        int y = (int)cp[NR::Y];
+    bool first_run = true;
+
+    while (!color_queue.empty() && !aborted) {
+        NR::Point color_point = color_queue.front();
+        color_queue.pop();
         
-        bool top_fill = true;
-        bool bottom_fill = true;
+        unsigned char *orig_px = get_pixel(px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
+        unsigned char orig_color[4];
+        for (int i = 0; i < 4; i++) { orig_color[i] = orig_px[i]; }
         
-        if (y > 0) { 
-          top_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y - 1, width, tolerance, method, top_fill);
-        } else {
-          if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
-            aborted = true; break;
-          } else {
-            reached_screen_boundary = true;
-          }
-        }
-        if (y < y_limit) { 
-          bottom_fill = try_add_to_queue(&fill_queue, px, trace_px, orig_color, dtc, x, y + 1, width, tolerance, method, bottom_fill);
-        } else {
-          if (bbox->max()[NR::Y] < screen.max()[NR::Y]) {
-            aborted = true; break;
-          } else {
-            reached_screen_boundary = true;
-          }
-        }
-        
-        bci.is_left = true;
-        bci.x = x;
-        bci.y = y;
-        bci.top_fill = top_fill;
-        bci.bottom_fill = bottom_fill;
+        unsigned char merged_orig[3];
+    
+        merge_pixel_with_background(orig_color, dtc, merged_orig);
         
-        ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
+        bci.merged_orig_pixel = merged_orig;
         
-        switch (result) {
-            case SCANLINE_CHECK_ABORTED:
-                aborted = true;
-                break;
-            case SCANLINE_CHECK_BOUNDARY:
-                reached_screen_boundary = true;
-                break;
-            default:
-                break;
+        unsigned char *trace_t = get_pixel(trace_px, (int)color_point[NR::X], (int)color_point[NR::Y], width);
+        if (!is_pixel_checked(trace_t) && !is_pixel_colored(trace_t)) {
+            if (check_if_pixel_is_paintable(px, trace_px, (int)color_point[NR::X], (int)color_point[NR::Y], orig_color, bci)) {
+                fill_queue.push_front(color_point);
+                
+                if (!first_run) {
+                    for (unsigned int y = 0; y < height; y++) {
+                        trace_t = get_pixel(trace_px, 0, y, width);
+                        for (unsigned int x = 0; x < width; x++) {
+                            clear_pixel_paintability(trace_t);
+                            trace_t += 4;
+                        }
+                    }
+                }
+                first_run = false;
+            }
         }
         
-        bci.is_left = false;
-        bci.x = x + 1;
-        bci.y = y;
-        bci.top_fill = top_fill;
-        bci.bottom_fill = bottom_fill;
+        while (!fill_queue.empty() && !aborted) {
+            NR::Point cp = fill_queue.front();
+            fill_queue.pop_front();
+            
+            unsigned char *trace_t = get_pixel(trace_px, (int)cp[NR::X], (int)cp[NR::Y], width);
+            if (!is_pixel_checked(trace_t)) {
+                mark_pixel_checked(trace_t);
+                int x = (int)cp[NR::X];
+                int y = (int)cp[NR::Y];
+                
+                if (y == 0) {
+                    if (bbox->min()[NR::Y] > screen.min()[NR::Y]) {
+                        aborted = true; break;
+                    } else {
+                        reached_screen_boundary = true;
+                    }
+                }
+
+                if (y == y_limit) {
+                    if (bbox->max()[NR::Y] < screen.max()[NR::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);
+
+                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 += 4;
+                    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);
+                        result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci);
         
-        switch (result) {
-            case SCANLINE_CHECK_ABORTED:
-                aborted = true;
-                break;
-            case SCANLINE_CHECK_BOUNDARY:
-                reached_screen_boundary = true;
-                break;
-            default:
-                break;
+                        switch (result) {
+                            case SCANLINE_CHECK_ABORTED:
+                                aborted = true;
+                                break;
+                            case SCANLINE_CHECK_BOUNDARY:
+                                reached_screen_boundary = true;
+                                break;
+                            default:
+                                break;
+                        }
+                    }
+                }
+            }
         }
-      }
     }
     
     g_free(px);
     
     if (aborted) {
-      g_free(trace_px);
-      desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
-      return;
+        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.")); 
+        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.")); 
     }
     
     GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(trace_px,
@@ -657,7 +907,7 @@ static void sp_flood_do_flood_fill(SPEventContext *event_context, GdkEvent *even
 
     NR::Matrix inverted_affine = NR::Matrix(affine).inverse();
     
-    do_trace(pixbuf, desktop, inverted_affine);
+    do_trace(pixbuf, desktop, inverted_affine, union_with_selection);
 
     g_free(trace_px);
     
@@ -668,10 +918,23 @@ static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem
 {
     gint ret = FALSE;
 
+    SPDesktop *desktop = event_context->desktop;
+
     switch (event->type) {
     case GDK_BUTTON_PRESS:
+        if (event->button.state & GDK_CONTROL_MASK) {
+            NR::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;
-        // motion and release are always on root (why?)
     default:
         break;
     }
@@ -685,13 +948,81 @@ static gint sp_flood_context_item_handler(SPEventContext *event_context, SPItem
 
 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 ) {
-            sp_flood_do_flood_fill(event_context, event);
+            if (!(event->button.state & GDK_CONTROL_MASK)) {
+                NR::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[NR::X];
+                    event_context->yp = (gint) button_w[NR::Y];
+                    event_context->within_tolerance = true;
+                    
+                    dragging = true;
+                    
+                    NR::Point const p(desktop->w2d(button_w));
+                    Inkscape::Rubberband::get()->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                    Inkscape::Rubberband::get()->start(desktop, p);
+                }
+            }
+        }
+    case GDK_MOTION_NOTIFY:
+        if ( dragging
+             && ( event->motion.state & GDK_BUTTON1_MASK ) )
+        {
+            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;
+            
+            NR::Point const motion_pt(event->motion.x, event->motion.y);
+            NR::Point const p(desktop->w2d(motion_pt));
+            if (Inkscape::Rubberband::get()->is_started()) {
+                Inkscape::Rubberband::get()->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;
 
-            ret = TRUE;
+    case GDK_BUTTON_RELEASE:
+        if ( event->button.button == 1 ) {
+            Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get();
+            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();
+                event_context->defaultMessageContext()->clear();
+            }
         }
         break;
     case GDK_KEY_PRESS:
@@ -737,15 +1068,15 @@ static void sp_flood_finish(SPFloodContext *rc)
 
         sp_desktop_selection(desktop)->set(rc->item);
         sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_PAINTBUCKET,
-                         _("Fill bounded area"));
+                        _("Fill bounded area"));
 
         rc->item = NULL;
     }
 }
 
-void flood_channels_changed(GtkComboBox *cbox, GtkWidget *tbl)
+void flood_channels_set_channels( gint channels )
 {
-    prefs_set_int_attribute("tools.paintbucket", "channels", (gint)gtk_combo_box_get_active(cbox));
+    prefs_set_int_attribute("tools.paintbucket", "channels", channels);
 }
 
 /*