src/tweak-context.cpp

   1 #define __SP_TWEAK_CONTEXT_C__
   2
   3 /*
   4  * tweaking paths without node editing
   5  *
   6  * Authors:
   7  *   bulia byak
   8  *
   9  * Copyright (C) 2007 authors
  10  *
  11  * Released under GNU GPL, read the file 'COPYING' for more information
  12  */
  13
  14 #include "config.h"
  15
  16 #include <gtk/gtk.h>
  17 #include <gdk/gdkkeysyms.h>
  18 #include <glibmm/i18n.h>
  19
  20 #include <numeric>
  21
  22 #include "svg/svg.h"
  23 #include "display/canvas-bpath.h"
  24 #include "display/bezier-utils.h"
  25
  26 #include <glib/gmem.h>
  27 #include "macros.h"
  28 #include "document.h"
  29 #include "selection.h"
  30 #include "desktop.h"
  31 #include "desktop-events.h"
  32 #include "desktop-handles.h"
  33 #include "desktop-affine.h"
  34 #include "desktop-style.h"
  35 #include "message-context.h"
  36 #include "pixmaps/cursor-tweak-move.xpm"
  37 #include "pixmaps/cursor-thin.xpm"
  38 #include "pixmaps/cursor-thicken.xpm"
  39 #include "pixmaps/cursor-attract.xpm"
  40 #include "pixmaps/cursor-repel.xpm"
  41 #include "pixmaps/cursor-push.xpm"
  42 #include "pixmaps/cursor-roughen.xpm"
  43 #include "pixmaps/cursor-color.xpm"
  44 #include <boost/optional.hpp>
  45 #include "libnr/nr-matrix-ops.h"
  46 #include "libnr/nr-scale-translate-ops.h"
  47 #include "xml/repr.h"
  48 #include "context-fns.h"
  49 #include "sp-item.h"
  50 #include "inkscape.h"
  51 #include "color.h"
  52 #include "svg/svg-color.h"
  53 #include "splivarot.h"
  54 #include "sp-item-group.h"
  55 #include "sp-shape.h"
  56 #include "sp-path.h"
  57 #include "path-chemistry.h"
  58 #include "sp-gradient.h"
  59 #include "sp-stop.h"
  60 #include "sp-stop-fns.h"
  61 #include "sp-gradient-reference.h"
  62 #include "sp-linear-gradient.h"
  63 #include "sp-radial-gradient.h"
  64 #include "gradient-chemistry.h"
  65 #include "sp-text.h"
  66 #include "sp-flowtext.h"
  67 #include "display/canvas-bpath.h"
  68 #include "display/canvas-arena.h"
  69 #include "display/curve.h"
  70 #include "livarot/Shape.h"
  71 #include "2geom/isnan.h"
  72 #include "prefs-utils.h"
  73 #include "style.h"
  74 #include "box3d.h"
  75 #include "sp-item-transform.h"
  76
  77 #include "tweak-context.h"
  78
  79 #define DDC_RED_RGBA 0xff0000ff
  80
  81 #define DYNA_MIN_WIDTH 1.0e-6
  82
  83 static void sp_tweak_context_class_init(SPTweakContextClass *klass);
  84 static void sp_tweak_context_init(SPTweakContext *ddc);
  85 static void sp_tweak_context_dispose(GObject *object);
  86
  87 static void sp_tweak_context_setup(SPEventContext *ec);
  88 static void sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
  89 static gint sp_tweak_context_root_handler(SPEventContext *ec, GdkEvent *event);
  90
  91 static SPEventContextClass *parent_class;
  92
  93 GtkType
  94 sp_tweak_context_get_type(void)
  95 {
  96     static GType type = 0;
  97     if (!type) {
  98         GTypeInfo info = {
  99             sizeof(SPTweakContextClass),
 100             NULL, NULL,
 101             (GClassInitFunc) sp_tweak_context_class_init,
 102             NULL, NULL,
 103             sizeof(SPTweakContext),
 104             4,
 105             (GInstanceInitFunc) sp_tweak_context_init,
 106             NULL,   /* value_table */
 107         };
 108         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPTweakContext", &info, (GTypeFlags)0);
 109     }
 110     return type;
 111 }
 112
 113 static void
 114 sp_tweak_context_class_init(SPTweakContextClass *klass)
 115 {
 116     GObjectClass *object_class = (GObjectClass *) klass;
 117     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
 118
 119     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
 120
 121     object_class->dispose = sp_tweak_context_dispose;
 122
 123     event_context_class->setup = sp_tweak_context_setup;
 124     event_context_class->set = sp_tweak_context_set;
 125     event_context_class->root_handler = sp_tweak_context_root_handler;
 126 }
 127
 128 static void
 129 sp_tweak_context_init(SPTweakContext *tc)
 130 {
 131     SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
 132
 133     event_context->cursor_shape = cursor_push_xpm;
 134     event_context->hot_x = 4;
 135     event_context->hot_y = 4;
 136
 137     /* attributes */
 138     tc->dragging = FALSE;
 139
 140     tc->width = 0.2;
 141     tc->force = 0.2;
 142     tc->pressure = TC_DEFAULT_PRESSURE;
 143
 144     tc->is_dilating = false;
 145     tc->has_dilated = false;
 146
 147     tc->do_h = true;
 148     tc->do_s = true;
 149     tc->do_l = true;
 150     tc->do_o = false;
 151
 152     new (&tc->style_set_connection) sigc::connection();
 153 }
 154
 155 static void
 156 sp_tweak_context_dispose(GObject *object)
 157 {
 158     SPTweakContext *tc = SP_TWEAK_CONTEXT(object);
 159
 160     tc->style_set_connection.disconnect();
 161     tc->style_set_connection.~connection();
 162
 163     if (tc->dilate_area) {
 164         gtk_object_destroy(GTK_OBJECT(tc->dilate_area));
 165         tc->dilate_area = NULL;
 166     }
 167
 168     if (tc->_message_context) {
 169         delete tc->_message_context;
 170     }
 171
 172     G_OBJECT_CLASS(parent_class)->dispose(object);
 173 }
 174
 175 bool is_transform_mode (gint mode)
 176 {
 177     return (mode == TWEAK_MODE_MOVE ||
 178             mode == TWEAK_MODE_MOVE_IN_OUT ||
 179             mode == TWEAK_MODE_MOVE_JITTER ||
 180             mode == TWEAK_MODE_SCALE ||
 181             mode == TWEAK_MODE_ROTATE ||
 182             mode == TWEAK_MODE_MORELESS);
 183 }
 184
 185 bool is_color_mode (gint mode)
 186 {
 187     return (mode == TWEAK_MODE_COLORPAINT || mode == TWEAK_MODE_COLORJITTER);
 188 }
 189
 190 void
 191 sp_tweak_update_cursor (SPTweakContext *tc, bool with_shift)
 192 {
 193    SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
 194    SPDesktop *desktop = event_context->desktop;
 195
 196                 guint num = 0;
 197                 gchar *sel_message = NULL;
 198                 if (!desktop->selection->isEmpty()) {
 199                     num = g_slist_length((GSList *) desktop->selection->itemList());
 200                     sel_message = g_strdup_printf(_("<b>%i</b> objects selected"), num);
 201                 } else {
 202                     sel_message = g_strdup_printf(_("<b>Nothing</b> selected"));
 203                 }
 204
 205
 206    switch (tc->mode) {
 207        case TWEAK_MODE_MOVE:
 208            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag to <b>move</b>."), sel_message);
 209                            break;
 210            event_context->cursor_shape = cursor_tweak_move_xpm;
 211            break;
 212        case TWEAK_MODE_MOVE_IN_OUT:
 213            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>move in</b>; with Shift to <b>move out</b>."), sel_message);
 214            break;
 215        case TWEAK_MODE_MOVE_JITTER:
 216            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>move randomly</b>."), sel_message);
 217            break;
 218        case TWEAK_MODE_SCALE:
 219            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>scale down</b>; with Shift to <b>scale up</b>."), sel_message);
 220            break;
 221        case TWEAK_MODE_ROTATE:
 222            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>rotate clockwise</b>; with Shift, <b>counterclockwise</b>."), sel_message);
 223            break;
 224        case TWEAK_MODE_MORELESS:
 225            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>duplicate</b>; with Shift, <b>delete</b>."), sel_message);
 226            break;
 227        case TWEAK_MODE_PUSH:
 228            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag to <b>push paths</b>."), sel_message);
 229            event_context->cursor_shape = cursor_push_xpm;
 230            break;
 231        case TWEAK_MODE_SHRINK_GROW:
 232            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>inset paths</b>; with Shift to <b>outset</b>."), sel_message);
 233            if (with_shift) {
 234                event_context->cursor_shape = cursor_thicken_xpm;
 235            } else {
 236                event_context->cursor_shape = cursor_thin_xpm;
 237            }
 238            break;
 239        case TWEAK_MODE_ATTRACT_REPEL:
 240            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>attract paths</b>; with Shift to <b>repel</b>."), sel_message);
 241            if (with_shift) {
 242                event_context->cursor_shape = cursor_repel_xpm;
 243            } else {
 244                event_context->cursor_shape = cursor_attract_xpm;
 245            }
 246            break;
 247        case TWEAK_MODE_ROUGHEN:
 248            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>roughen paths</b>."), sel_message);
 249            event_context->cursor_shape = cursor_roughen_xpm;
 250            break;
 251        case TWEAK_MODE_COLORPAINT:
 252            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>paint objects</b> with color."), sel_message);
 253            break;
 254        case TWEAK_MODE_COLORJITTER:
 255            tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>randomize colors</b>."), sel_message);
 256            event_context->cursor_shape = cursor_color_xpm;
 257            break;
 258    }
 259    sp_event_context_update_cursor(event_context);
 260    g_free(sel_message);
 261 }
 262
 263 static bool
 264 sp_tweak_context_style_set(SPCSSAttr const *css, SPTweakContext *tc)
 265 {
 266     if (tc->mode == TWEAK_MODE_COLORPAINT) { // intercept color setting only in this mode
 267         // we cannot store properties with uris
 268         css = sp_css_attr_unset_uris ((SPCSSAttr *) css);
 269
 270         sp_repr_css_change (inkscape_get_repr (INKSCAPE, "tools.tweak"), (SPCSSAttr *) css, "style");
 271
 272         return true;
 273     }
 274     return false;
 275 }
 276
 277
 278 static void
 279 sp_tweak_context_setup(SPEventContext *ec)
 280 {
 281     SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
 282
 283     if (((SPEventContextClass *) parent_class)->setup)
 284         ((SPEventContextClass *) parent_class)->setup(ec);
 285
 286     {
 287         /* TODO: have a look at sp_dyna_draw_context_setup where the same is done.. generalize? at least make it an arcto! */
 288         SPCurve *c = new SPCurve();
 289         const double C1 = 0.552;
 290         c->moveto(-1,0);
 291         c->curveto(-1, C1, -C1, 1, 0, 1 );
 292         c->curveto(C1, 1, 1, C1, 1, 0 );
 293         c->curveto(1, -C1, C1, -1, 0, -1 );
 294         c->curveto(-C1, -1, -1, -C1, -1, 0 );
 295         c->closepath();
 296         tc->dilate_area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c);
 297         c->unref();
 298         sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(tc->dilate_area), 0x00000000,(SPWindRule)0);
 299         sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(tc->dilate_area), 0xff9900ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
 300         sp_canvas_item_hide(tc->dilate_area);
 301     }
 302
 303     tc->is_drawing = false;
 304
 305     tc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 306
 307     sp_event_context_read(ec, "width");
 308     sp_event_context_read(ec, "mode");
 309     sp_event_context_read(ec, "fidelity");
 310     sp_event_context_read(ec, "force");
 311     sp_event_context_read(ec, "usepressure");
 312     sp_event_context_read(ec, "doh");
 313     sp_event_context_read(ec, "dol");
 314     sp_event_context_read(ec, "dos");
 315     sp_event_context_read(ec, "doo");
 316
 317     tc->style_set_connection = ec->desktop->connectSetStyle( // catch style-setting signal in this tool
 318         sigc::bind(sigc::ptr_fun(&sp_tweak_context_style_set), tc)
 319     );
 320
 321     if (prefs_get_int_attribute("tools.tweak", "selcue", 0) != 0) {
 322         ec->enableSelectionCue();
 323     }
 324
 325     if (prefs_get_int_attribute("tools.tweak", "gradientdrag", 0) != 0) {
 326         ec->enableGrDrag();
 327     }
 328 }
 329
 330 static void
 331 sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
 332 {
 333     SPTweakContext *tc = SP_TWEAK_CONTEXT(ec);
 334
 335     if (!strcmp(key, "width")) {
 336         double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.1 );
 337         tc->width = CLAMP(dval, -1000.0, 1000.0);
 338     } else if (!strcmp(key, "mode")) {
 339         gint64 const dval = ( val ? g_ascii_strtoll (val, NULL, 10) : 0 );
 340         tc->mode = dval;
 341         sp_tweak_update_cursor(tc, false);
 342     } else if (!strcmp(key, "fidelity")) {
 343         double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.0 );
 344         tc->fidelity = CLAMP(dval, 0.0, 1.0);
 345     } else if (!strcmp(key, "force")) {
 346         double const dval = ( val ? g_ascii_strtod (val, NULL) : 1.0 );
 347         tc->force = CLAMP(dval, 0, 1.0);
 348     } else if (!strcmp(key, "usepressure")) {
 349         tc->usepressure = (val && strcmp(val, "0"));
 350     } else if (!strcmp(key, "doh")) {
 351         tc->do_h = (val && strcmp(val, "0"));
 352     } else if (!strcmp(key, "dos")) {
 353         tc->do_s = (val && strcmp(val, "0"));
 354     } else if (!strcmp(key, "dol")) {
 355         tc->do_l = (val && strcmp(val, "0"));
 356     } else if (!strcmp(key, "doo")) {
 357         tc->do_o = (val && strcmp(val, "0"));
 358     }
 359 }
 360
 361 static void
 362 sp_tweak_extinput(SPTweakContext *tc, GdkEvent *event)
 363 {
 364     if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &tc->pressure))
 365         tc->pressure = CLAMP (tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE);
 366     else
 367         tc->pressure = TC_DEFAULT_PRESSURE;
 368 }
 369
 370 double
 371 get_dilate_radius (SPTweakContext *tc)
 372 {
 373     // 10 times the pen width:
 374     return 500 * tc->width/SP_EVENT_CONTEXT(tc)->desktop->current_zoom();
 375 }
 376
 377 double
 378 get_path_force (SPTweakContext *tc)
 379 {
 380     double force = 8 * (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE)
 381         /sqrt(SP_EVENT_CONTEXT(tc)->desktop->current_zoom());
 382     if (force > 3) {
 383         force += 4 * (force - 3);
 384     }
 385     return force * tc->force;
 386 }
 387
 388 double
 389 get_move_force (SPTweakContext *tc)
 390 {
 391     double force = (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE);
 392     return force * tc->force;
 393 }
 394
 395 bool
 396 sp_tweak_dilate_recursive (Inkscape::Selection *selection, SPItem *item, NR::Point p, NR::Point vector, gint mode, double radius, double force, double fidelity, bool reverse)
 397 {
 398     bool did = false;
 399
 400     if (SP_IS_BOX3D(item) && !is_transform_mode(mode) && !is_color_mode(mode)) {
 401         // convert 3D boxes to ordinary groups before tweaking their shapes
 402         item = SP_ITEM(box3d_convert_to_group(SP_BOX3D(item)));
 403         selection->add(item);
 404     }
 405
 406     if (SP_IS_GROUP(item)) {
 407         for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
 408             if (SP_IS_ITEM(child)) {
 409                 if (sp_tweak_dilate_recursive (selection, SP_ITEM(child), p, vector, mode, radius, force, fidelity, reverse))
 410                     did = true;
 411             }
 412         }
 413
 414     } else {
 415         if (mode == TWEAK_MODE_MOVE) {
 416
 417             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 418             if (a) {
 419                 double x = NR::L2(a->midpoint() - p)/radius;
 420                 if (a->contains(p)) x = 0;
 421                 if (x < 1) {
 422                     Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) * vector;
 423                     sp_item_move_rel(item, Geom::Translate(move[Geom::X], -move[Geom::Y]));
 424                     did = true;
 425                 }
 426             }
 427
 428         } else if (mode == TWEAK_MODE_MOVE_IN_OUT) {
 429
 430             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 431             if (a) {
 432                 double x = NR::L2(a->midpoint() - p)/radius;
 433                 if (a->contains(p)) x = 0;
 434                 if (x < 1) {
 435                     Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) *
 436                         (reverse? (a->midpoint() - p) : (p - a->midpoint()));
 437                     sp_item_move_rel(item, Geom::Translate(move[Geom::X], -move[Geom::Y]));
 438                     did = true;
 439                 }
 440             }
 441
 442         } else if (mode == TWEAK_MODE_MOVE_JITTER) {
 443
 444             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 445             if (a) {
 446                 double dp = g_random_double_range(0, M_PI*2);
 447                 double dr = g_random_double_range(0, radius);
 448                 double x = NR::L2(a->midpoint() - p)/radius;
 449                 if (a->contains(p)) x = 0;
 450                 if (x < 1) {
 451                     Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) * NR::Point(cos(dp)*dr, sin(dp)*dr);
 452                     sp_item_move_rel(item, Geom::Translate(move[Geom::X], -move[Geom::Y]));
 453                     did = true;
 454                 }
 455             }
 456
 457         } else if (mode == TWEAK_MODE_SCALE) {
 458
 459             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 460             if (a) {
 461                 double x = NR::L2(a->midpoint() - p)/radius;
 462                 if (a->contains(p)) x = 0;
 463                 if (x < 1) {
 464                     double scale = 1 + (reverse? force : -force) * 0.05 * (cos(M_PI * x) + 1);
 465                     sp_item_scale_rel(item, Geom::Scale(scale, scale));
 466                     did = true;
 467                 }
 468             }
 469
 470         } else if (mode == TWEAK_MODE_ROTATE) {
 471
 472             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 473             if (a) {
 474                 double x = NR::L2(a->midpoint() - p)/radius;
 475                 if (a->contains(p)) x = 0;
 476                 if (x < 1) {
 477                     double angle = (reverse? force : -force) * 0.05 * (cos(M_PI * x) + 1) * M_PI;
 478                     sp_item_rotate_rel(item, Geom::Rotate(angle));
 479                     did = true;
 480                 }
 481             }
 482
 483         } else if (mode == TWEAK_MODE_MORELESS) {
 484
 485             boost::optional<NR::Rect> a = item->getBounds(sp_item_i2doc_affine(item));
 486             if (a) {
 487                 double x = NR::L2(a->midpoint() - p)/radius;
 488                 if (a->contains(p)) x = 0;
 489                 if (x < 1) {
 490                     double prob = force * 0.5 * (cos(M_PI * x) + 1);
 491                     double chance = g_random_double_range(0, 1);
 492                     if (chance <= prob) {
 493                         if (reverse) { // delete
 494                             sp_object_ref(SP_OBJECT(item), NULL);
 495                             SP_OBJECT(item)->deleteObject(true, true);
 496                             sp_object_unref(SP_OBJECT(item), NULL);
 497                         } else { // duplicate
 498                             SPDocument *doc = SP_OBJECT_DOCUMENT(item);
 499                             Inkscape::XML::Document* xml_doc = sp_document_repr_doc(doc);
 500                             Inkscape::XML::Node *old_repr = SP_OBJECT_REPR(item);
 501                             Inkscape::XML::Node *parent = old_repr->parent();
 502                             Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
 503                             parent->appendChild(copy);
 504                             Inkscape::GC::release(copy);
 505                         }
 506                     }
 507                 }
 508             }
 509
 510         } else if (SP_IS_PATH(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
 511
 512         Inkscape::XML::Node *newrepr = NULL;
 513         gint pos = 0;
 514         Inkscape::XML::Node *parent = NULL;
 515         char const *id = NULL;
 516         if (!SP_IS_PATH(item)) {
 517             newrepr = sp_selected_item_to_curved_repr(item, 0);
 518             if (!newrepr)
 519                 return false;
 520
 521             // remember the position of the item
 522             pos = SP_OBJECT_REPR(item)->position();
 523             // remember parent
 524             parent = SP_OBJECT_REPR(item)->parent();
 525             // remember id
 526             id = SP_OBJECT_REPR(item)->attribute("id");
 527         }
 528
 529
 530         // skip those paths whose bboxes are entirely out of reach with our radius
 531         boost::optional<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item));
 532         if (bbox) {
 533             bbox->growBy(radius);
 534             if (!bbox->contains(p)) {
 535                 return false;
 536             }
 537         }
 538
 539         Path *orig = Path_for_item(item, false);
 540         if (orig == NULL) {
 541             return false;
 542         }
 543
 544         Path *res = new Path;
 545         res->SetBackData(false);
 546
 547         Shape *theShape = new Shape;
 548         Shape *theRes = new Shape;
 549         Geom::Matrix i2doc(sp_item_i2doc_affine(item));
 550
 551         orig->ConvertWithBackData((0.08 - (0.07 * fidelity)) / i2doc.descrim()); // default 0.059
 552         orig->Fill(theShape, 0);
 553
 554         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
 555         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
 556         if (val && strcmp(val, "nonzero") == 0)
 557         {
 558             theRes->ConvertToShape(theShape, fill_nonZero);
 559         }
 560         else if (val && strcmp(val, "evenodd") == 0)
 561         {
 562             theRes->ConvertToShape(theShape, fill_oddEven);
 563         }
 564         else
 565         {
 566             theRes->ConvertToShape(theShape, fill_nonZero);
 567         }
 568
 569         if (NR::L2(vector) != 0)
 570             vector = 1/NR::L2(vector) * vector;
 571
 572         bool did_this = false;
 573         if (mode == TWEAK_MODE_SHRINK_GROW) {
 574             if (theShape->MakeTweak(tweak_mode_grow, theRes,
 575                                  reverse? force : -force,
 576                                  join_straight, 4.0,
 577                                  true, p, NR::Point(0,0), radius, &i2doc) == 0) // 0 means the shape was actually changed
 578               did_this = true;
 579         } else if (mode == TWEAK_MODE_ATTRACT_REPEL) {
 580             if (theShape->MakeTweak(tweak_mode_repel, theRes,
 581                                  reverse? force : -force,
 582                                  join_straight, 4.0,
 583                                  true, p, NR::Point(0,0), radius, &i2doc) == 0)
 584               did_this = true;
 585         } else if (mode == TWEAK_MODE_PUSH) {
 586             if (theShape->MakeTweak(tweak_mode_push, theRes,
 587                                  1.0,
 588                                  join_straight, 4.0,
 589                                  true, p, force*2*vector, radius, &i2doc) == 0)
 590               did_this = true;
 591         } else if (mode == TWEAK_MODE_ROUGHEN) {
 592             if (theShape->MakeTweak(tweak_mode_roughen, theRes,
 593                                  force,
 594                                  join_straight, 4.0,
 595                                  true, p, NR::Point(0,0), radius, &i2doc) == 0)
 596               did_this = true;
 597         }
 598
 599         // the rest only makes sense if we actually changed the path
 600         if (did_this) {
 601             theRes->ConvertToShape(theShape, fill_positive);
 602
 603             res->Reset();
 604             theRes->ConvertToForme(res);
 605
 606             double th_max = (0.6 - 0.59*sqrt(fidelity)) / i2doc.descrim();
 607             double threshold = MAX(th_max, th_max*force);
 608             res->ConvertEvenLines(threshold);
 609             res->Simplify(threshold / (selection->desktop()->current_zoom()));
 610
 611             if (newrepr) { // converting to path, need to replace the repr
 612                 bool is_selected = selection->includes(item);
 613                 if (is_selected)
 614                     selection->remove(item);
 615
 616                 // It's going to resurrect, so we delete without notifying listeners.
 617                 SP_OBJECT(item)->deleteObject(false);
 618
 619                 // restore id
 620                 newrepr->setAttribute("id", id);
 621                 // add the new repr to the parent
 622                 parent->appendChild(newrepr);
 623                 // move to the saved position
 624                 newrepr->setPosition(pos > 0 ? pos : 0);
 625
 626                 if (is_selected)
 627                     selection->add(newrepr);
 628             }
 629
 630             if (res->descr_cmd.size() > 1) {
 631                 gchar *str = res->svg_dump_path();
 632                 if (newrepr) {
 633                     newrepr->setAttribute("d", str);
 634                 } else {
 635                     if (SP_IS_LPE_ITEM(item) && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(item))) {
 636                         SP_OBJECT_REPR(item)->setAttribute("inkscape:original-d", str);
 637                     } else {
 638                         SP_OBJECT_REPR(item)->setAttribute("d", str);
 639                     }
 640                 }
 641                 g_free(str);
 642             } else {
 643                 // TODO: if there's 0 or 1 node left, delete this path altogether
 644             }
 645
 646             if (newrepr) {
 647                 Inkscape::GC::release(newrepr);
 648                 newrepr = NULL;
 649             }
 650         }
 651
 652         delete theShape;
 653         delete theRes;
 654         delete orig;
 655         delete res;
 656
 657         if (did_this)
 658             did = true;
 659     }
 660
 661     }
 662
 663     return did;
 664 }
 665
 666 void
 667 tweak_colorpaint (float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
 668 {
 669     float rgb_g[3];
 670
 671     if (!do_h || !do_s || !do_l) {
 672         float hsl_g[3];
 673         sp_color_rgb_to_hsl_floatv (hsl_g, SP_RGBA32_R_F(goal), SP_RGBA32_G_F(goal), SP_RGBA32_B_F(goal));
 674         float hsl_c[3];
 675         sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
 676         if (!do_h)
 677             hsl_g[0] = hsl_c[0];
 678         if (!do_s)
 679             hsl_g[1] = hsl_c[1];
 680         if (!do_l)
 681             hsl_g[2] = hsl_c[2];
 682         sp_color_hsl_to_rgb_floatv (rgb_g, hsl_g[0], hsl_g[1], hsl_g[2]);
 683     } else {
 684         rgb_g[0] = SP_RGBA32_R_F(goal);
 685         rgb_g[1] = SP_RGBA32_G_F(goal);
 686         rgb_g[2] = SP_RGBA32_B_F(goal);
 687     }
 688
 689     for (int i = 0; i < 3; i++) {
 690         double d = rgb_g[i] - color[i];
 691         color[i] += d * force;
 692     }
 693 }
 694
 695 void
 696 tweak_colorjitter (float *color, double force, bool do_h, bool do_s, bool do_l)
 697 {
 698     float hsl_c[3];
 699     sp_color_rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
 700
 701     if (do_h) {
 702         hsl_c[0] += g_random_double_range(-0.5, 0.5) * force;
 703         if (hsl_c[0] > 1)
 704             hsl_c[0] -= 1;
 705         if (hsl_c[0] < 0)
 706             hsl_c[0] += 1;
 707     }
 708     if (do_s) {
 709         hsl_c[1] += g_random_double_range(-hsl_c[1], 1 - hsl_c[1]) * force;
 710     }
 711     if (do_l) {
 712         hsl_c[2] += g_random_double_range(-hsl_c[2], 1 - hsl_c[2]) * force;
 713     }
 714
 715     sp_color_hsl_to_rgb_floatv (color, hsl_c[0], hsl_c[1], hsl_c[2]);
 716 }
 717
 718 void
 719 tweak_color (guint mode, float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
 720 {
 721     if (mode == TWEAK_MODE_COLORPAINT) {
 722         tweak_colorpaint (color, goal, force, do_h, do_s, do_l);
 723     } else if (mode == TWEAK_MODE_COLORJITTER) {
 724         tweak_colorjitter (color, force, do_h, do_s, do_l);
 725     }
 726 }
 727
 728 void
 729 tweak_opacity (guint mode, SPIScale24 *style_opacity, double opacity_goal, double force)
 730 {
 731     double opacity = SP_SCALE24_TO_FLOAT (style_opacity->value);
 732
 733     if (mode == TWEAK_MODE_COLORPAINT) {
 734         double d = opacity_goal - opacity;
 735         opacity += d * force;
 736     } else if (mode == TWEAK_MODE_COLORJITTER) {
 737         opacity += g_random_double_range(-opacity, 1 - opacity) * force;
 738     }
 739
 740     style_opacity->value = SP_SCALE24_FROM_FLOAT(opacity);
 741 }
 742
 743
 744 double
 745 tweak_profile (double dist, double radius)
 746 {
 747     if (radius == 0)
 748         return 0;
 749     double x = dist / radius;
 750     double alpha = 1;
 751     if (x >= 1) {
 752         return 0;
 753     } else if (x <= 0) {
 754         return 1;
 755     } else {
 756         return (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
 757     }
 758 }
 759
 760 void
 761 tweak_colors_in_gradient (SPItem *item, bool fill_or_stroke,
 762                           guint32 const rgb_goal, NR::Point p_w, double radius, double force, guint mode,
 763                           bool do_h, bool do_s, bool do_l, bool /*do_o*/)
 764 {
 765     SPGradient *gradient = sp_item_gradient (item, fill_or_stroke);
 766
 767     if (!gradient || !SP_IS_GRADIENT(gradient))
 768         return;
 769
 770     NR::Matrix i2d (sp_item_i2doc_affine (item));
 771     NR::Point p = p_w * i2d.inverse();
 772     p *= (gradient->gradientTransform).inverse();
 773     // now p is in gradient's original coordinates
 774
 775     double pos = 0;
 776     double r = 0;
 777     if (SP_IS_LINEARGRADIENT(gradient)) {
 778         SPLinearGradient *lg = SP_LINEARGRADIENT(gradient);
 779
 780         NR::Point p1(lg->x1.computed, lg->y1.computed);
 781         NR::Point p2(lg->x2.computed, lg->y2.computed);
 782         NR::Point pdiff(p2 - p1);
 783         double vl = NR::L2(pdiff);
 784
 785         // This is the matrix which moves and rotates the gradient line
 786         // so it's oriented along the X axis:
 787         NR::Matrix norm = NR::Matrix(NR::translate(-p1)) * NR::Matrix(NR::rotate(-atan2(pdiff[NR::Y], pdiff[NR::X])));
 788
 789         // Transform the mouse point by it to find out its projection onto the gradient line:
 790         NR::Point pnorm = p * norm;
 791
 792         // Scale its X coordinate to match the length of the gradient line:
 793         pos = pnorm[NR::X] / vl;
 794         // Calculate radius in lenfth-of-gradient-line units
 795         r = radius / vl;
 796
 797     } else if (SP_IS_RADIALGRADIENT(gradient)) {
 798         SPRadialGradient *rg = SP_RADIALGRADIENT(gradient);
 799         NR::Point c (rg->cx.computed, rg->cy.computed);
 800         pos = NR::L2(p - c) / rg->r.computed;
 801         r = radius / rg->r.computed;
 802     }
 803
 804     // Normalize pos to 0..1, taking into accound gradient spread:
 805     double pos_e = pos;
 806     if (gradient->spread == SP_GRADIENT_SPREAD_PAD) {
 807         if (pos > 1)
 808             pos_e = 1;
 809         if (pos < 0)
 810             pos_e = 0;
 811     } else if (gradient->spread == SP_GRADIENT_SPREAD_REPEAT) {
 812         if (pos > 1 || pos < 0)
 813             pos_e = pos - floor(pos);
 814     } else if (gradient->spread == SP_GRADIENT_SPREAD_REFLECT) {
 815         if (pos > 1 || pos < 0) {
 816             bool odd = ((int)(floor(pos)) % 2 == 1);
 817             pos_e = pos - floor(pos);
 818             if (odd)
 819                 pos_e = 1 - pos_e;
 820         }
 821     }
 822
 823     SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
 824
 825     double offset_l = 0;
 826     double offset_h = 0;
 827     SPObject *child_prev = NULL;
 828     for (SPObject *child = sp_object_first_child(vector);
 829          child != NULL; child = SP_OBJECT_NEXT(child)) {
 830         if (!SP_IS_STOP(child))
 831             continue;
 832         SPStop *stop = SP_STOP (child);
 833
 834         offset_h = stop->offset;
 835
 836         if (child_prev) {
 837
 838             if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
 839                 // the summit falls in this interstop, and the radius is small,
 840                 // so it only affects the ends of this interstop;
 841                 // distribute the force between the two endstops so that they
 842                 // get all the painting even if they are not touched by the brush
 843                 tweak_color (mode, stop->specified_color.v.c, rgb_goal,
 844                                   force * (pos_e - offset_l) / (offset_h - offset_l),
 845                                   do_h, do_s, do_l);
 846                 tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
 847                                   force * (offset_h - pos_e) / (offset_h - offset_l),
 848                                   do_h, do_s, do_l);
 849                 SP_OBJECT(stop)->updateRepr();
 850                 child_prev->updateRepr();
 851                 break;
 852             } else {
 853                 // wide brush, may affect more than 2 stops,
 854                 // paint each stop by the force from the profile curve
 855                 if (offset_l <= pos_e && offset_l > pos_e - r) {
 856                     tweak_color (mode, SP_STOP(child_prev)->specified_color.v.c, rgb_goal,
 857                                  force * tweak_profile (fabs (pos_e - offset_l), r),
 858                                  do_h, do_s, do_l);
 859                     child_prev->updateRepr();
 860                 }
 861
 862                 if (offset_h >= pos_e && offset_h < pos_e + r) {
 863                     tweak_color (mode, stop->specified_color.v.c, rgb_goal,
 864                                  force * tweak_profile (fabs (pos_e - offset_h), r),
 865                                  do_h, do_s, do_l);
 866                     SP_OBJECT(stop)->updateRepr();
 867                 }
 868             }
 869         }
 870
 871         offset_l = offset_h;
 872         child_prev = child;
 873     }
 874 }
 875
 876 bool
 877 sp_tweak_color_recursive (guint mode, SPItem *item, SPItem *item_at_point,
 878                           guint32 fill_goal, bool do_fill,
 879                           guint32 stroke_goal, bool do_stroke,
 880                           float opacity_goal, bool do_opacity,
 881                           NR::Point p, double radius, double force,
 882                           bool do_h, bool do_s, bool do_l, bool do_o)
 883 {
 884     bool did = false;
 885
 886     if (SP_IS_GROUP(item)) {
 887         for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
 888             if (SP_IS_ITEM(child)) {
 889                 if (sp_tweak_color_recursive (mode, SP_ITEM(child), item_at_point,
 890                                           fill_goal, do_fill,
 891                                           stroke_goal, do_stroke,
 892                                           opacity_goal, do_opacity,
 893                                           p, radius, force, do_h, do_s, do_l, do_o))
 894                     did = true;
 895             }
 896         }
 897
 898     } else {
 899         SPStyle *style = SP_OBJECT_STYLE(item);
 900         if (!style) {
 901             return false;
 902         }
 903         boost::optional<NR::Rect> bbox = item->getBounds(sp_item_i2doc_affine(item),
 904                                                         SPItem::GEOMETRIC_BBOX);
 905         if (!bbox) {
 906             return false;
 907         }
 908
 909         NR::Rect brush(p - NR::Point(radius, radius), p + NR::Point(radius, radius));
 910
 911         NR::Point center = bbox->midpoint();
 912         double this_force;
 913
 914 // if item == item_at_point, use max force
 915         if (item == item_at_point) {
 916             this_force = force;
 917 // else if no overlap of bbox and brush box, skip:
 918         } else if (!bbox->intersects(brush)) {
 919             return false;
 920 //TODO:
 921 // else if object > 1.5 brush: test 4/8/16 points in the brush on hitting the object, choose max
 922         //} else if (bbox->maxExtent() > 3 * radius) {
 923         //}
 924 // else if object > 0.5 brush: test 4 corners of bbox and center on being in the brush, choose max
 925 // else if still smaller, then check only the object center:
 926         } else {
 927             this_force = force * tweak_profile (NR::L2 (p - center), radius);
 928         }
 929
 930         if (this_force > 0.002) {
 931
 932             if (do_fill) {
 933                 if (style->fill.isPaintserver()) {
 934                     tweak_colors_in_gradient (item, true, fill_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
 935                     did = true;
 936                 } else if (style->fill.isColor()) {
 937                     tweak_color (mode, style->fill.value.color.v.c, fill_goal, this_force, do_h, do_s, do_l);
 938                     item->updateRepr();
 939                     did = true;
 940                 }
 941             }
 942             if (do_stroke) {
 943                 if (style->stroke.isPaintserver()) {
 944                     tweak_colors_in_gradient (item, false, stroke_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
 945                     did = true;
 946                 } else if (style->stroke.isColor()) {
 947                     tweak_color (mode, style->stroke.value.color.v.c, stroke_goal, this_force, do_h, do_s, do_l);
 948                     item->updateRepr();
 949                     did = true;
 950                 }
 951             }
 952             if (do_opacity && do_o) {
 953                 tweak_opacity (mode, &style->opacity, opacity_goal, this_force);
 954             }
 955         }
 956     }
 957
 958     return did;
 959 }
 960
 961
 962 bool
 963 sp_tweak_dilate (SPTweakContext *tc, NR::Point event_p, NR::Point p, NR::Point vector, bool reverse)
 964 {
 965     Inkscape::Selection *selection = sp_desktop_selection(SP_EVENT_CONTEXT(tc)->desktop);
 966     SPDesktop *desktop = SP_EVENT_CONTEXT(tc)->desktop;
 967
 968     if (selection->isEmpty()) {
 969         return false;
 970     }
 971
 972     bool did = false;
 973     double radius = get_dilate_radius(tc);
 974
 975     SPItem *item_at_point = SP_EVENT_CONTEXT(tc)->desktop->item_at_point(event_p, TRUE);
 976
 977     bool do_fill = false, do_stroke = false, do_opacity = false;
 978     guint32 fill_goal = sp_desktop_get_color_tool(desktop, "tools.tweak", true, &do_fill);
 979     guint32 stroke_goal = sp_desktop_get_color_tool(desktop, "tools.tweak", false, &do_stroke);
 980     double opacity_goal = sp_desktop_get_master_opacity_tool(desktop, "tools.tweak", &do_opacity);
 981
 982     double path_force = get_path_force(tc);
 983     if (radius == 0 || path_force == 0) {
 984         return false;
 985     }
 986     double move_force = get_move_force(tc);
 987     double color_force = MIN(sqrt(path_force)/20.0, 1);
 988
 989     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 990          items != NULL;
 991          items = items->next) {
 992
 993         SPItem *item = (SPItem *) items->data;
 994
 995         if (is_color_mode (tc->mode)) {
 996             if (do_fill || do_stroke || do_opacity) {
 997                 if (sp_tweak_color_recursive (tc->mode, item, item_at_point,
 998                                           fill_goal, do_fill,
 999                                           stroke_goal, do_stroke,
1000                                           opacity_goal, do_opacity,
1001                                           p, radius, color_force, tc->do_h, tc->do_s, tc->do_l, tc->do_o))
1002                 did = true;
1003             }
1004         } else if (is_transform_mode(tc->mode)) {
1005             if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, move_force, tc->fidelity, reverse))
1006                 did = true;
1007         } else {
1008             if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, path_force, tc->fidelity, reverse))
1009                 did = true;
1010         }
1011     }
1012
1013     return did;
1014 }
1015
1016 void
1017 sp_tweak_update_area (SPTweakContext *tc)
1018 {
1019         double radius = get_dilate_radius(tc);
1020         NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(SP_EVENT_CONTEXT(tc)->desktop->point()));
1021         sp_canvas_item_affine_absolute(tc->dilate_area, sm);
1022         sp_canvas_item_show(tc->dilate_area);
1023 }
1024
1025 void
1026 sp_tweak_switch_mode (SPTweakContext *tc, gint mode, bool with_shift)
1027 {
1028     SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
1029     // need to set explicitly, because the prefs may not have changed by the previous
1030     tc->mode = mode;
1031     sp_tweak_update_cursor (tc, with_shift);
1032 }
1033
1034 void
1035 sp_tweak_switch_mode_temporarily (SPTweakContext *tc, gint mode, bool with_shift)
1036 {
1037    // Juggling about so that prefs have the old value but tc->mode and the button show new mode:
1038    gint now_mode = prefs_get_int_attribute("tools.tweak", "mode", 0);
1039    SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode);
1040    // button has changed prefs, restore
1041    prefs_set_int_attribute("tools.tweak", "mode", now_mode);
1042    // changing prefs changed tc->mode, restore back :)
1043    tc->mode = mode;
1044    sp_tweak_update_cursor (tc, with_shift);
1045 }
1046
1047 gint
1048 sp_tweak_context_root_handler(SPEventContext *event_context,
1049                                   GdkEvent *event)
1050 {
1051     SPTweakContext *tc = SP_TWEAK_CONTEXT(event_context);
1052     SPDesktop *desktop = event_context->desktop;
1053
1054     gint ret = FALSE;
1055
1056     switch (event->type) {
1057         case GDK_ENTER_NOTIFY:
1058             sp_canvas_item_show(tc->dilate_area);
1059             break;
1060         case GDK_LEAVE_NOTIFY:
1061             sp_canvas_item_hide(tc->dilate_area);
1062             break;
1063         case GDK_BUTTON_PRESS:
1064             if (event->button.button == 1 && !event_context->space_panning) {
1065
1066                 if (Inkscape::have_viable_layer(desktop, tc->_message_context) == false) {
1067                     return TRUE;
1068                 }
1069
1070                 NR::Point const button_w(event->button.x,
1071                                          event->button.y);
1072                 NR::Point const button_dt(desktop->w2d(button_w));
1073                 tc->last_push = desktop->dt2doc(button_dt);
1074
1075                 sp_tweak_extinput(tc, event);
1076
1077                 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3);
1078                 tc->is_drawing = true;
1079                 tc->is_dilating = true;
1080                 tc->has_dilated = false;
1081
1082                 ret = TRUE;
1083             }
1084             break;
1085         case GDK_MOTION_NOTIFY:
1086         {
1087             NR::Point const motion_w(event->motion.x,
1088                                      event->motion.y);
1089             NR::Point motion_dt(desktop->w2d(motion_w));
1090             NR::Point motion_doc(desktop->dt2doc(motion_dt));
1091             sp_tweak_extinput(tc, event);
1092
1093             // draw the dilating cursor
1094                 double radius = get_dilate_radius(tc);
1095                 NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(desktop->w2d(motion_w)));
1096                 sp_canvas_item_affine_absolute(tc->dilate_area, sm);
1097                 sp_canvas_item_show(tc->dilate_area);
1098
1099                 guint num = 0;
1100                 if (!desktop->selection->isEmpty()) {
1101                     num = g_slist_length((GSList *) desktop->selection->itemList());
1102                 }
1103                 if (num == 0) {
1104                     tc->_message_context->flash(Inkscape::ERROR_MESSAGE, _("<b>Nothing selected!</b> Select objects to tweak."));
1105                 }
1106
1107             // dilating:
1108             if (tc->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) {
1109                 sp_tweak_dilate (tc, motion_w, motion_doc, motion_doc - tc->last_push, event->button.state & GDK_SHIFT_MASK? true : false);
1110                 //tc->last_push = motion_doc;
1111                 tc->has_dilated = true;
1112                 // it's slow, so prevent clogging up with events
1113                 gobble_motion_events(GDK_BUTTON1_MASK);
1114                 return TRUE;
1115             }
1116
1117         }
1118         break;
1119
1120
1121     case GDK_BUTTON_RELEASE:
1122     {
1123         NR::Point const motion_w(event->button.x, event->button.y);
1124         NR::Point const motion_dt(desktop->w2d(motion_w));
1125
1126         sp_canvas_end_forced_full_redraws(desktop->canvas);
1127         tc->is_drawing = false;
1128
1129         if (tc->is_dilating && event->button.button == 1 && !event_context->space_panning) {
1130             if (!tc->has_dilated) {
1131                 // if we did not rub, do a light tap
1132                 tc->pressure = 0.03;
1133                 sp_tweak_dilate (tc, motion_w, desktop->dt2doc(motion_dt), NR::Point(0,0), MOD__SHIFT);
1134             }
1135             tc->is_dilating = false;
1136             tc->has_dilated = false;
1137             switch (tc->mode) {
1138                 case TWEAK_MODE_MOVE:
1139                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1140                                      SP_VERB_CONTEXT_TWEAK, _("Move tweak"));
1141                     break;
1142                 case TWEAK_MODE_MOVE_IN_OUT:
1143                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1144                                      SP_VERB_CONTEXT_TWEAK, _("Move in/out tweak"));
1145                     break;
1146                 case TWEAK_MODE_MOVE_JITTER:
1147                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1148                                      SP_VERB_CONTEXT_TWEAK, _("Move jitter tweak"));
1149                     break;
1150                 case TWEAK_MODE_SCALE:
1151                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1152                                      SP_VERB_CONTEXT_TWEAK, _("Scale tweak"));
1153                     break;
1154                 case TWEAK_MODE_ROTATE:
1155                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1156                                      SP_VERB_CONTEXT_TWEAK, _("Rotate tweak"));
1157                     break;
1158                 case TWEAK_MODE_MORELESS:
1159                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1160                                      SP_VERB_CONTEXT_TWEAK, _("Duplicate/delete tweak"));
1161                     break;
1162                 case TWEAK_MODE_PUSH:
1163                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1164                                      SP_VERB_CONTEXT_TWEAK, _("Push path tweak"));
1165                     break;
1166                 case TWEAK_MODE_SHRINK_GROW:
1167                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1168                                      SP_VERB_CONTEXT_TWEAK, _("Shrink/grow path tweak"));
1169                     break;
1170                 case TWEAK_MODE_ATTRACT_REPEL:
1171                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1172                                      SP_VERB_CONTEXT_TWEAK, _("Attract/repel path tweak"));
1173                     break;
1174                 case TWEAK_MODE_ROUGHEN:
1175                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1176                                      SP_VERB_CONTEXT_TWEAK, _("Roughen path tweak"));
1177                     break;
1178                 case TWEAK_MODE_COLORPAINT:
1179                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1180                                      SP_VERB_CONTEXT_TWEAK, _("Color paint tweak"));
1181                     break;
1182                 case TWEAK_MODE_COLORJITTER:
1183                     sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop),
1184                                      SP_VERB_CONTEXT_TWEAK, _("Color jitter tweak"));
1185                     break;
1186             }
1187         }
1188         break;
1189     }
1190
1191     case GDK_KEY_PRESS:
1192         switch (get_group0_keyval (&event->key)) {
1193         case GDK_m:
1194         case GDK_M:
1195         case GDK_0:
1196             if (MOD__SHIFT_ONLY) {
1197                 sp_tweak_switch_mode(tc, TWEAK_MODE_MOVE, MOD__SHIFT);
1198                 ret = TRUE;
1199             }
1200             break;
1201         case GDK_i:
1202         case GDK_I:
1203         case GDK_1:
1204             if (MOD__SHIFT_ONLY) {
1205                 sp_tweak_switch_mode(tc, TWEAK_MODE_MOVE_IN_OUT, MOD__SHIFT);
1206                 ret = TRUE;
1207             }
1208             break;
1209         case GDK_z:
1210         case GDK_Z:
1211         case GDK_2:
1212             if (MOD__SHIFT_ONLY) {
1213                 sp_tweak_switch_mode(tc, TWEAK_MODE_MOVE_JITTER, MOD__SHIFT);
1214                 ret = TRUE;
1215             }
1216             break;
1217         case GDK_less:
1218         case GDK_comma:
1219         case GDK_greater:
1220         case GDK_period:
1221         case GDK_3:
1222             if (MOD__SHIFT_ONLY) {
1223                 sp_tweak_switch_mode(tc, TWEAK_MODE_SCALE, MOD__SHIFT);
1224                 ret = TRUE;
1225             }
1226             break;
1227         case GDK_bracketright:
1228         case GDK_bracketleft:
1229         case GDK_4:
1230             if (MOD__SHIFT_ONLY) {
1231                 sp_tweak_switch_mode(tc, TWEAK_MODE_ROTATE, MOD__SHIFT);
1232                 ret = TRUE;
1233             }
1234             break;
1235         case GDK_d:
1236         case GDK_D:
1237         case GDK_5:
1238             if (MOD__SHIFT_ONLY) {
1239                 sp_tweak_switch_mode(tc, TWEAK_MODE_MORELESS, MOD__SHIFT);
1240                 ret = TRUE;
1241             }
1242             break;
1243         case GDK_p:
1244         case GDK_P:
1245         case GDK_6:
1246             if (MOD__SHIFT_ONLY) {
1247                 sp_tweak_switch_mode(tc, TWEAK_MODE_PUSH, MOD__SHIFT);
1248                 ret = TRUE;
1249             }
1250             break;
1251         case GDK_s:
1252         case GDK_S:
1253         case GDK_7:
1254             if (MOD__SHIFT_ONLY) {
1255                 sp_tweak_switch_mode(tc, TWEAK_MODE_SHRINK_GROW, MOD__SHIFT);
1256                 ret = TRUE;
1257             }
1258             break;
1259         case GDK_a:
1260         case GDK_A:
1261         case GDK_8:
1262             if (MOD__SHIFT_ONLY) {
1263                 sp_tweak_switch_mode(tc, TWEAK_MODE_ATTRACT_REPEL, MOD__SHIFT);
1264                 ret = TRUE;
1265             }
1266             break;
1267         case GDK_r:
1268         case GDK_R:
1269         case GDK_9:
1270             if (MOD__SHIFT_ONLY) {
1271                 sp_tweak_switch_mode(tc, TWEAK_MODE_ROUGHEN, MOD__SHIFT);
1272                 ret = TRUE;
1273             }
1274             break;
1275         case GDK_c:
1276         case GDK_C:
1277             if (MOD__SHIFT_ONLY) {
1278                 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORPAINT, MOD__SHIFT);
1279                 ret = TRUE;
1280             }
1281             break;
1282         case GDK_j:
1283         case GDK_J:
1284             if (MOD__SHIFT_ONLY) {
1285                 sp_tweak_switch_mode(tc, TWEAK_MODE_COLORJITTER, MOD__SHIFT);
1286                 ret = TRUE;
1287             }
1288             break;
1289
1290         case GDK_Up:
1291         case GDK_KP_Up:
1292             if (!MOD__CTRL_ONLY) {
1293                 tc->force += 0.05;
1294                 if (tc->force > 1.0)
1295                     tc->force = 1.0;
1296                 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1297                 ret = TRUE;
1298             }
1299             break;
1300         case GDK_Down:
1301         case GDK_KP_Down:
1302             if (!MOD__CTRL_ONLY) {
1303                 tc->force -= 0.05;
1304                 if (tc->force < 0.0)
1305                     tc->force = 0.0;
1306                 desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100);
1307                 ret = TRUE;
1308             }
1309             break;
1310         case GDK_Right:
1311         case GDK_KP_Right:
1312             if (!MOD__CTRL_ONLY) {
1313                 tc->width += 0.01;
1314                 if (tc->width > 1.0)
1315                     tc->width = 1.0;
1316                 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); // the same spinbutton is for alt+x
1317                 sp_tweak_update_area(tc);
1318                 ret = TRUE;
1319             }
1320             break;
1321         case GDK_Left:
1322         case GDK_KP_Left:
1323             if (!MOD__CTRL_ONLY) {
1324                 tc->width -= 0.01;
1325                 if (tc->width < 0.01)
1326                     tc->width = 0.01;
1327                 desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1328                 sp_tweak_update_area(tc);
1329                 ret = TRUE;
1330             }
1331             break;
1332         case GDK_Home:
1333         case GDK_KP_Home:
1334             tc->width = 0.01;
1335             desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1336             sp_tweak_update_area(tc);
1337             ret = TRUE;
1338             break;
1339         case GDK_End:
1340         case GDK_KP_End:
1341             tc->width = 1.0;
1342             desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100);
1343             sp_tweak_update_area(tc);
1344             ret = TRUE;
1345             break;
1346         case GDK_x:
1347         case GDK_X:
1348             if (MOD__ALT_ONLY) {
1349                 desktop->setToolboxFocusTo ("altx-tweak");
1350                 ret = TRUE;
1351             }
1352             break;
1353
1354         case GDK_Shift_L:
1355         case GDK_Shift_R:
1356             sp_tweak_update_cursor(tc, true);
1357             break;
1358
1359         case GDK_Control_L:
1360         case GDK_Control_R:
1361             sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SHRINK_GROW, MOD__SHIFT);
1362             break;
1363         default:
1364             break;
1365         }
1366         break;
1367
1368     case GDK_KEY_RELEASE:
1369         switch (get_group0_keyval(&event->key)) {
1370             case GDK_Shift_L:
1371             case GDK_Shift_R:
1372                 sp_tweak_update_cursor(tc, false);
1373                 break;
1374             case GDK_Control_L:
1375             case GDK_Control_R:
1376                 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0), MOD__SHIFT);
1377                 tc->_message_context->clear();
1378                 break;
1379             default:
1380                 sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0), MOD__SHIFT);
1381                 break;
1382         }
1383
1384     default:
1385         break;
1386     }
1387
1388     if (!ret) {
1389         if (((SPEventContextClass *) parent_class)->root_handler) {
1390             ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
1391         }
1392     }
1393
1394     return ret;
1395 }
1396
1397
1398 /*
1399   Local Variables:
1400   mode:c++
1401   c-file-style:"stroustrup"
1402   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1403   indent-tabs-mode:nil
1404   fill-column:99
1405   End:
1406 */
1407 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :