#define __SP_TWEAK_CONTEXT_C__ /* * tweaking paths without node editing * * Authors: * bulia byak * * Copyright (C) 2007 authors * * Released under GNU GPL, read the file 'COPYING' for more information */ #define noTWEAK_VERBOSE #include "config.h" #include #include #include #include #include "svg/svg.h" #include "display/canvas-bpath.h" #include "display/bezier-utils.h" #include #include "macros.h" #include "document.h" #include "selection.h" #include "desktop.h" #include "desktop-events.h" #include "desktop-handles.h" #include "desktop-affine.h" #include "desktop-style.h" #include "message-context.h" #include "pixmaps/cursor-thin.xpm" #include "pixmaps/cursor-thicken.xpm" #include "pixmaps/cursor-push.xpm" #include "pixmaps/cursor-roughen.xpm" #include "libnr/n-art-bpath.h" #include "libnr/nr-path.h" #include "libnr/nr-matrix-ops.h" #include "libnr/nr-scale-translate-ops.h" #include "xml/repr.h" #include "context-fns.h" #include "sp-item.h" #include "inkscape.h" #include "color.h" #include "splivarot.h" #include "sp-item-group.h" #include "sp-shape.h" #include "sp-path.h" #include "path-chemistry.h" #include "sp-text.h" #include "sp-flowtext.h" #include "display/canvas-bpath.h" #include "display/canvas-arena.h" #include "livarot/Shape.h" #include "isnan.h" #include "prefs-utils.h" #include "tweak-context.h" #define DDC_RED_RGBA 0xff0000ff #define DYNA_MIN_WIDTH 1.0e-6 // FIXME: move it to some shared file to be reused by both calligraphy and dropper #define C1 0.552 static NArtBpath const hatch_area_circle[] = { { NR_MOVETO, 0, 0, 0, 0, -1, 0 }, { NR_CURVETO, -1, C1, -C1, 1, 0, 1 }, { NR_CURVETO, C1, 1, 1, C1, 1, 0 }, { NR_CURVETO, 1, -C1, C1, -1, 0, -1 }, { NR_CURVETO, -C1, -1, -1, -C1, -1, 0 }, { NR_END, 0, 0, 0, 0, 0, 0 } }; #undef C1 static void sp_tweak_context_class_init(SPTweakContextClass *klass); static void sp_tweak_context_init(SPTweakContext *ddc); static void sp_tweak_context_dispose(GObject *object); static void sp_tweak_context_setup(SPEventContext *ec); static void sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val); static gint sp_tweak_context_root_handler(SPEventContext *ec, GdkEvent *event); static SPEventContextClass *parent_class; GtkType sp_tweak_context_get_type(void) { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(SPTweakContextClass), NULL, NULL, (GClassInitFunc) sp_tweak_context_class_init, NULL, NULL, sizeof(SPTweakContext), 4, (GInstanceInitFunc) sp_tweak_context_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPTweakContext", &info, (GTypeFlags)0); } return type; } static void sp_tweak_context_class_init(SPTweakContextClass *klass) { GObjectClass *object_class = (GObjectClass *) klass; SPEventContextClass *event_context_class = (SPEventContextClass *) klass; parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass); object_class->dispose = sp_tweak_context_dispose; event_context_class->setup = sp_tweak_context_setup; event_context_class->set = sp_tweak_context_set; event_context_class->root_handler = sp_tweak_context_root_handler; } static void sp_tweak_context_init(SPTweakContext *tc) { SPEventContext *event_context = SP_EVENT_CONTEXT(tc); event_context->cursor_shape = cursor_push_xpm; event_context->hot_x = 4; event_context->hot_y = 4; /* attributes */ tc->dragging = FALSE; tc->width = 0.2; tc->force = 0.2; tc->pressure = TC_DEFAULT_PRESSURE; tc->is_dilating = false; tc->has_dilated = false; } static void sp_tweak_context_dispose(GObject *object) { SPTweakContext *tc = SP_TWEAK_CONTEXT(object); if (tc->dilate_area) { gtk_object_destroy(GTK_OBJECT(tc->dilate_area)); tc->dilate_area = NULL; } if (tc->_message_context) { delete tc->_message_context; } G_OBJECT_CLASS(parent_class)->dispose(object); } void sp_tweak_update_cursor (SPTweakContext *tc, gint mode) { SPEventContext *event_context = SP_EVENT_CONTEXT(tc); switch (mode) { case TWEAK_MODE_PUSH: event_context->cursor_shape = cursor_push_xpm; break; case TWEAK_MODE_SUCK: event_context->cursor_shape = cursor_thin_xpm; break; case TWEAK_MODE_BLOW: event_context->cursor_shape = cursor_thicken_xpm; break; case TWEAK_MODE_ROUGHEN: event_context->cursor_shape = cursor_roughen_xpm; break; } sp_event_context_update_cursor(event_context); } static void sp_tweak_context_setup(SPEventContext *ec) { SPTweakContext *tc = SP_TWEAK_CONTEXT(ec); if (((SPEventContextClass *) parent_class)->setup) ((SPEventContextClass *) parent_class)->setup(ec); { SPCurve *c = sp_curve_new_from_foreign_bpath(hatch_area_circle); tc->dilate_area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c); sp_curve_unref(c); sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(tc->dilate_area), 0x00000000,(SPWindRule)0); sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(tc->dilate_area), 0xff9900ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT); sp_canvas_item_hide(tc->dilate_area); } sp_event_context_read(ec, "width"); sp_event_context_read(ec, "mode"); sp_event_context_read(ec, "fidelity"); sp_event_context_read(ec, "force"); sp_event_context_read(ec, "usepressure"); tc->is_drawing = false; tc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack()); } static void sp_tweak_context_set(SPEventContext *ec, gchar const *key, gchar const *val) { SPTweakContext *tc = SP_TWEAK_CONTEXT(ec); if (!strcmp(key, "width")) { double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.1 ); tc->width = CLAMP(dval, -1000.0, 1000.0); } else if (!strcmp(key, "mode")) { gint64 const dval = ( val ? g_ascii_strtoll (val, NULL, 10) : 0 ); tc->mode = dval; sp_tweak_update_cursor(tc, tc->mode); } else if (!strcmp(key, "fidelity")) { double const dval = ( val ? g_ascii_strtod (val, NULL) : 0.0 ); tc->fidelity = CLAMP(dval, 0.0, 1.0); } else if (!strcmp(key, "force")) { double const dval = ( val ? g_ascii_strtod (val, NULL) : 1.0 ); tc->force = CLAMP(dval, 0, 1.0); } else if (!strcmp(key, "usepressure")) { tc->usepressure = (val && strcmp(val, "0")); } } static void sp_tweak_extinput(SPTweakContext *tc, GdkEvent *event) { if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &tc->pressure)) tc->pressure = CLAMP (tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE); else tc->pressure = TC_DEFAULT_PRESSURE; } double get_dilate_radius (SPTweakContext *tc) { // 10 times the pen width: return 500 * tc->width/SP_EVENT_CONTEXT(tc)->desktop->current_zoom(); } double get_dilate_force (SPTweakContext *tc) { double force = 8 * (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE) /sqrt(SP_EVENT_CONTEXT(tc)->desktop->current_zoom()); if (force > 3) { force += 4 * (force - 3); } return force * tc->force; } bool sp_tweak_dilate_recursive (Inkscape::Selection *selection, SPItem *item, NR::Point p, NR::Point vector, gint mode, double radius, double force, double fidelity) { bool did = false; if (SP_IS_GROUP(item)) { for (SPObject *child = sp_object_first_child(SP_OBJECT(item)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) { if (SP_IS_ITEM(child)) { if (sp_tweak_dilate_recursive (selection, SP_ITEM(child), p, vector, mode, radius, force, fidelity)) did = true; } } } else if (SP_IS_PATH(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) { Inkscape::XML::Node *newrepr = NULL; gint pos = 0; Inkscape::XML::Node *parent = NULL; char const *id = NULL; if (!SP_IS_PATH(item)) { newrepr = sp_selected_item_to_curved_repr(item, 0); if (!newrepr) return false; // remember the position of the item pos = SP_OBJECT_REPR(item)->position(); // remember parent parent = SP_OBJECT_REPR(item)->parent(); // remember id id = SP_OBJECT_REPR(item)->attribute("id"); } // skip those paths whose bboxes are entirely out of reach with our radius NR::Maybe bbox = item->getBounds(sp_item_i2doc_affine(item)); if (bbox) { bbox->growBy(radius); if (!bbox->contains(p)) { return false; } } Path *orig = Path_for_item(item, false); if (orig == NULL) { return false; } Path *res = new Path; res->SetBackData(false); Shape *theShape = new Shape; Shape *theRes = new Shape; orig->ConvertWithBackData(0.08 - (0.07 * fidelity)); // default 0.059 orig->Fill(theShape, 0); SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style"); gchar const *val = sp_repr_css_property(css, "fill-rule", NULL); if (val && strcmp(val, "nonzero") == 0) { theRes->ConvertToShape(theShape, fill_nonZero); } else if (val && strcmp(val, "evenodd") == 0) { theRes->ConvertToShape(theShape, fill_oddEven); } else { theRes->ConvertToShape(theShape, fill_nonZero); } if (NR::L2(vector) != 0) vector = 1/NR::L2(vector) * vector; bool did_this = false; NR::Matrix i2doc(sp_item_i2doc_affine(item)); if (mode == TWEAK_MODE_SUCK || mode == TWEAK_MODE_BLOW) { if (theShape->MakeOffset(theRes, mode == TWEAK_MODE_BLOW? force : -force, join_straight, 4.0, true, p[NR::X], p[NR::Y], radius, &i2doc) == 0) // 0 means the shape was actually changed did_this = true; } else if (mode == TWEAK_MODE_PUSH) { if (theShape->MakePush(theRes, join_straight, 4.0, true, p, force*2*vector, radius, &i2doc) == 0) did_this = true; } else if (mode == TWEAK_MODE_ROUGHEN) { if (theShape->MakeJitter(theRes, join_straight, 4.0, true, p, force, radius, &i2doc) == 0) did_this = true; } // the rest only makes sense if we actually changed the path if (did_this) { theRes->ConvertToShape(theShape, fill_positive); res->Reset(); theRes->ConvertToForme(res); double th_max = 0.6 - 0.59*sqrt(fidelity); double threshold = MAX(th_max, th_max*force); res->ConvertEvenLines(threshold); res->Simplify(threshold); if (newrepr) { // converting to path, need to replace the repr bool is_selected = selection->includes(item); selection->remove(item); // It's going to resurrect, so we delete without notifying listeners. SP_OBJECT(item)->deleteObject(false); // restore id newrepr->setAttribute("id", id); // add the new repr to the parent parent->appendChild(newrepr); // move to the saved position newrepr->setPosition(pos > 0 ? pos : 0); if (is_selected) selection->add(newrepr); } if (res->descr_cmd.size() > 1) { gchar *str = res->svg_dump_path(); if (newrepr) newrepr->setAttribute("d", str); else SP_OBJECT_REPR(item)->setAttribute("d", str); g_free(str); } else { // TODO: if there's 0 or 1 node left, delete this path altogether } if (newrepr) { Inkscape::GC::release(newrepr); newrepr = NULL; } } delete theShape; delete theRes; delete orig; delete res; if (did_this) did = true; } return did; } bool sp_tweak_dilate (SPTweakContext *tc, NR::Point p, NR::Point vector) { Inkscape::Selection *selection = sp_desktop_selection(SP_EVENT_CONTEXT(tc)->desktop); if (selection->isEmpty()) { return false; } bool did = false; double radius = get_dilate_radius(tc); double force = get_dilate_force(tc); if (radius == 0 || force == 0) { return false; } for (GSList *items = g_slist_copy((GSList *) selection->itemList()); items != NULL; items = items->next) { SPItem *item = (SPItem *) items->data; if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, force, tc->fidelity)) did = true; } return did; } void sp_tweak_update_area (SPTweakContext *tc) { double radius = get_dilate_radius(tc); NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(SP_EVENT_CONTEXT(tc)->desktop->point())); sp_canvas_item_affine_absolute(tc->dilate_area, sm); sp_canvas_item_show(tc->dilate_area); } void sp_tweak_switch_mode (SPTweakContext *tc, gint mode) { SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode); // need to set explicitly, because the prefs may not have changed by the previous tc->mode = mode; sp_tweak_update_cursor (tc, mode); } void sp_tweak_switch_mode_temporarily (SPTweakContext *tc, gint mode) { // Juggling about so that prefs have the old value but tc->mode and the button show new mode: gint now_mode = prefs_get_int_attribute("tools.tweak", "mode", 0); SP_EVENT_CONTEXT(tc)->desktop->setToolboxSelectOneValue ("tweak_tool_mode", mode); sp_tweak_update_cursor (tc, mode); // button has changed prefs, restore prefs_set_int_attribute("tools.tweak", "mode", now_mode); // changing prefs changed tc->mode, restore back :) tc->mode = mode; } gint sp_tweak_context_root_handler(SPEventContext *event_context, GdkEvent *event) { SPTweakContext *tc = SP_TWEAK_CONTEXT(event_context); SPDesktop *desktop = event_context->desktop; gint ret = FALSE; switch (event->type) { case GDK_BUTTON_PRESS: if (event->button.button == 1 && !event_context->space_panning) { if (Inkscape::have_viable_layer(desktop, tc->_message_context) == false) { return TRUE; } NR::Point const button_w(event->button.x, event->button.y); NR::Point const button_dt(desktop->w2d(button_w)); tc->last_push = desktop->dt2doc(button_dt); sp_tweak_extinput(tc, event); sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3); tc->is_drawing = true; tc->is_dilating = true; tc->has_dilated = false; ret = TRUE; } break; case GDK_MOTION_NOTIFY: { NR::Point const motion_w(event->motion.x, event->motion.y); NR::Point motion_dt(desktop->w2d(motion_w)); NR::Point motion_doc(desktop->dt2doc(motion_dt)); sp_tweak_extinput(tc, event); // draw the dilating cursor double radius = get_dilate_radius(tc); NR::Matrix const sm (NR::scale(radius, radius) * NR::translate(desktop->w2d(motion_w))); sp_canvas_item_affine_absolute(tc->dilate_area, sm); sp_canvas_item_show(tc->dilate_area); guint num = 0; if (!desktop->selection->isEmpty()) { num = g_slist_length((GSList *) desktop->selection->itemList()); } if (num == 0) { tc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Select paths to tweak")); } else { switch (tc->mode) { case TWEAK_MODE_PUSH: tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("Pushing %d selected path(s)"), num); break; case TWEAK_MODE_SUCK: tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("Melting %d selected path(s)"), num); break; case TWEAK_MODE_BLOW: tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("Blowing %d selected path(s)"), num); break; case TWEAK_MODE_ROUGHEN: tc->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("Roughening %d selected path(s)"), num); break; } } // dilating: if (tc->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) { sp_tweak_dilate (tc, motion_doc, motion_doc - tc->last_push); //tc->last_push = motion_doc; tc->has_dilated = true; // it's slow, so prevent clogging up with events gobble_motion_events(GDK_BUTTON1_MASK); return TRUE; } } break; case GDK_BUTTON_RELEASE: { NR::Point const motion_w(event->button.x, event->button.y); NR::Point const motion_dt(desktop->w2d(motion_w)); sp_canvas_end_forced_full_redraws(desktop->canvas); tc->is_drawing = false; if (tc->is_dilating && event->button.button == 1 && !event_context->space_panning) { if (!tc->has_dilated) { // if we did not rub, do a light tap tc->pressure = 0.03; sp_tweak_dilate (tc, desktop->dt2doc(motion_dt), NR::Point(0,0)); } tc->is_dilating = false; tc->has_dilated = false; sp_document_done(sp_desktop_document(SP_EVENT_CONTEXT(tc)->desktop), SP_VERB_CONTEXT_TWEAK, (tc->mode==TWEAK_MODE_BLOW ? _("Blow tweak") : (tc->mode==TWEAK_MODE_SUCK ? _("Melt tweak") : (tc->mode==TWEAK_MODE_PUSH ? _("Push tweak") : _("Roughen tweak"))))); ret = TRUE; } break; } case GDK_KEY_PRESS: switch (get_group0_keyval (&event->key)) { case GDK_p: case GDK_P: case GDK_1: if (MOD__SHIFT_ONLY) { sp_tweak_switch_mode(tc, TWEAK_MODE_PUSH); ret = TRUE; } break; case GDK_m: case GDK_M: case GDK_2: if (MOD__SHIFT_ONLY) { sp_tweak_switch_mode(tc, TWEAK_MODE_SUCK); ret = TRUE; } break; case GDK_b: case GDK_B: case GDK_3: if (MOD__SHIFT_ONLY) { sp_tweak_switch_mode(tc, TWEAK_MODE_BLOW); ret = TRUE; } break; case GDK_r: case GDK_R: case GDK_4: if (MOD__SHIFT_ONLY) { sp_tweak_switch_mode(tc, TWEAK_MODE_ROUGHEN); ret = TRUE; } break; case GDK_Up: case GDK_KP_Up: if (!MOD__CTRL_ONLY) { tc->force += 0.05; if (tc->force > 1.0) tc->force = 1.0; desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100); ret = TRUE; } break; case GDK_Down: case GDK_KP_Down: if (!MOD__CTRL_ONLY) { tc->force -= 0.05; if (tc->force < 0.0) tc->force = 0.0; desktop->setToolboxAdjustmentValue ("tweak-force", tc->force * 100); ret = TRUE; } break; case GDK_Right: case GDK_KP_Right: if (!MOD__CTRL_ONLY) { tc->width += 0.01; if (tc->width > 1.0) tc->width = 1.0; desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); // the same spinbutton is for alt+x sp_tweak_update_area(tc); ret = TRUE; } break; case GDK_Left: case GDK_KP_Left: if (!MOD__CTRL_ONLY) { tc->width -= 0.01; if (tc->width < 0.01) tc->width = 0.01; desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); sp_tweak_update_area(tc); ret = TRUE; } break; case GDK_Home: case GDK_KP_Home: tc->width = 0.01; desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); sp_tweak_update_area(tc); ret = TRUE; break; case GDK_End: case GDK_KP_End: tc->width = 1.0; desktop->setToolboxAdjustmentValue ("altx-tweak", tc->width * 100); sp_tweak_update_area(tc); ret = TRUE; break; case GDK_x: case GDK_X: if (MOD__ALT_ONLY) { desktop->setToolboxFocusTo ("altx-tweak"); ret = TRUE; } break; case GDK_Control_L: case GDK_Control_R: if (MOD__SHIFT) { sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_BLOW); } else { sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SUCK); } break; case GDK_Shift_L: case GDK_Shift_R: if (MOD__CTRL) { sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_BLOW); } break; default: break; } break; case GDK_KEY_RELEASE: switch (get_group0_keyval(&event->key)) { case GDK_Control_L: case GDK_Control_R: sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0)); tc->_message_context->clear(); break; case GDK_Shift_L: case GDK_Shift_R: if (MOD__CTRL) { sp_tweak_switch_mode_temporarily(tc, TWEAK_MODE_SUCK); } break; break; default: sp_tweak_switch_mode (tc, prefs_get_int_attribute("tools.tweak", "mode", 0)); break; } default: break; } if (!ret) { if (((SPEventContextClass *) parent_class)->root_handler) { ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event); } } return ret; } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :