#define __SP_GRADIENT_CONTEXT_C__ /* * Gradient drawing and editing tool * * Authors: * bulia byak <buliabyak@users.sf.net> * Johan Engelen <j.b.c.engelen@ewi.utwente.nl> * * Copyright (C) 2007 Johan Engelen * Copyright (C) 2005 Authors * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include <gdk/gdkkeysyms.h> #include "macros.h" #include "document.h" #include "selection.h" #include "desktop.h" #include "desktop-handles.h" #include "message-context.h" #include "message-stack.h" #include "pixmaps/cursor-gradient.xpm" #include "pixmaps/cursor-gradient-add.xpm" #include "gradient-context.h" #include "gradient-chemistry.h" #include <glibmm/i18n.h> #include "preferences.h" #include "gradient-drag.h" #include "gradient-chemistry.h" #include "xml/repr.h" #include "sp-item.h" #include "display/sp-ctrlline.h" #include "sp-linear-gradient.h" #include "sp-radial-gradient.h" #include "sp-stop.h" #include "svg/css-ostringstream.h" #include "svg/svg-color.h" #include "snap.h" #include "sp-namedview.h" #include "rubberband.h" static void sp_gradient_context_class_init(SPGradientContextClass *klass); static void sp_gradient_context_init(SPGradientContext *gr_context); static void sp_gradient_context_dispose(GObject *object); static void sp_gradient_context_setup(SPEventContext *ec); static gint sp_gradient_context_root_handler(SPEventContext *event_context, GdkEvent *event); static void sp_gradient_drag(SPGradientContext &rc, Geom::Point const pt, guint state, guint32 etime); static SPEventContextClass *parent_class; GtkType sp_gradient_context_get_type() { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(SPGradientContextClass), NULL, NULL, (GClassInitFunc) sp_gradient_context_class_init, NULL, NULL, sizeof(SPGradientContext), 4, (GInstanceInitFunc) sp_gradient_context_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPGradientContext", &info, (GTypeFlags) 0); } return type; } static void sp_gradient_context_class_init(SPGradientContextClass *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_gradient_context_dispose; event_context_class->setup = sp_gradient_context_setup; event_context_class->root_handler = sp_gradient_context_root_handler; } static void sp_gradient_context_init(SPGradientContext *gr_context) { SPEventContext *event_context = SP_EVENT_CONTEXT(gr_context); gr_context->cursor_addnode = false; event_context->cursor_shape = cursor_gradient_xpm; event_context->hot_x = 4; event_context->hot_y = 4; event_context->xp = 0; event_context->yp = 0; event_context->tolerance = 6; event_context->within_tolerance = false; event_context->item_to_select = NULL; } static void sp_gradient_context_dispose(GObject *object) { SPGradientContext *rc = SP_GRADIENT_CONTEXT(object); SPEventContext *ec = SP_EVENT_CONTEXT(object); ec->enableGrDrag(false); if (rc->_message_context) { delete rc->_message_context; } rc->selcon->disconnect(); delete rc->selcon; rc->subselcon->disconnect(); delete rc->subselcon; G_OBJECT_CLASS(parent_class)->dispose(object); } const gchar *gr_handle_descr [] = { N_("Linear gradient <b>start</b>"), //POINT_LG_BEGIN N_("Linear gradient <b>end</b>"), N_("Linear gradient <b>mid stop</b>"), N_("Radial gradient <b>center</b>"), N_("Radial gradient <b>radius</b>"), N_("Radial gradient <b>radius</b>"), N_("Radial gradient <b>focus</b>"), // POINT_RG_FOCUS N_("Radial gradient <b>mid stop</b>"), N_("Radial gradient <b>mid stop</b>") }; static void gradient_selection_changed (Inkscape::Selection *, gpointer data) { SPGradientContext *rc = (SPGradientContext *) data; GrDrag *drag = rc->_grdrag; Inkscape::Selection *selection = sp_desktop_selection(SP_EVENT_CONTEXT(rc)->desktop); if (selection == NULL) { return; } guint n_obj = g_slist_length((GSList *) selection->itemList()); if (!drag->isNonEmpty() || selection->isEmpty()) return; guint n_tot = drag->numDraggers(); guint n_sel = drag->numSelected(); //The use of ngettext in the following code is intentional even if the English singular form would never be used if (n_sel == 1) { if (drag->singleSelectedDraggerNumDraggables() == 1) { gchar * message = g_strconcat( //TRANSLATORS: %s will be substituted with the point name (see previous messages); This is part of a compound message _("%s selected"), //TRANSLATORS: Mind the space in front. This is part of a compound message ngettext(" out of %d gradient handle"," out of %d gradient handles",n_tot), ngettext(" on %d selected object"," on %d selected objects",n_obj),NULL); rc->_message_context->setF(Inkscape::NORMAL_MESSAGE, message,_(gr_handle_descr[drag->singleSelectedDraggerSingleDraggableType()]), n_tot, n_obj); } else { gchar * message = g_strconcat( //TRANSLATORS: This is a part of a compound message (out of two more indicating: grandint handle count & object count) ngettext("One handle merging %d stop (drag with <b>Shift</b> to separate) selected", "One handle merging %d stops (drag with <b>Shift</b> to separate) selected",drag->singleSelectedDraggerNumDraggables()), ngettext(" out of %d gradient handle"," out of %d gradient handles",n_tot), ngettext(" on %d selected object"," on %d selected objects",n_obj),NULL); rc->_message_context->setF(Inkscape::NORMAL_MESSAGE,message,drag->singleSelectedDraggerNumDraggables(), n_tot, n_obj); } } else if (n_sel > 1) { //TRANSLATORS: The plural refers to number of selected gradient handles. This is part of a compound message (part two indicates selected object count) gchar * message = g_strconcat(ngettext("<b>%d</b> gradient handle selected out of %d","<b>%d</b> gradient handles selected out of %d",n_sel), //TRANSLATORS: Mind the space in front. (Refers to gradient handles selected). This is part of a compound message ngettext(" on %d selected object"," on %d selected objects",n_obj),NULL); rc->_message_context->setF(Inkscape::NORMAL_MESSAGE,message, n_sel, n_tot, n_obj); } else if (n_sel == 0) { rc->_message_context->setF(Inkscape::NORMAL_MESSAGE, //TRANSLATORS: The plural refers to number of selected objects ngettext("<b>No</b> gradient handles selected out of %d on %d selected object", "<b>No</b> gradient handles selected out of %d on %d selected objects",n_obj), n_tot, n_obj); } } static void gradient_subselection_changed (gpointer, gpointer data) { gradient_selection_changed (NULL, data); } static void sp_gradient_context_setup(SPEventContext *ec) { SPGradientContext *rc = SP_GRADIENT_CONTEXT(ec); if (((SPEventContextClass *) parent_class)->setup) { ((SPEventContextClass *) parent_class)->setup(ec); } Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool("/tools/gradient/selcue", true)) { ec->enableSelectionCue(); } ec->enableGrDrag(); Inkscape::Selection *selection = sp_desktop_selection(ec->desktop); rc->_message_context = new Inkscape::MessageContext(sp_desktop_message_stack(ec->desktop)); rc->selcon = new sigc::connection (selection->connectChanged( sigc::bind (sigc::ptr_fun(&gradient_selection_changed), rc))); rc->subselcon = new sigc::connection (ec->desktop->connectToolSubselectionChanged(sigc::bind (sigc::ptr_fun(&gradient_subselection_changed), rc))); gradient_selection_changed(selection, rc); } void sp_gradient_context_select_next (SPEventContext *event_context) { GrDrag *drag = event_context->_grdrag; g_assert (drag); GrDragger *d = drag->select_next(); event_context->desktop->scroll_to_point(d->point, 1.0); } void sp_gradient_context_select_prev (SPEventContext *event_context) { GrDrag *drag = event_context->_grdrag; g_assert (drag); GrDragger *d = drag->select_prev(); event_context->desktop->scroll_to_point(d->point, 1.0); } static bool sp_gradient_context_is_over_line (SPGradientContext *rc, SPItem *item, Geom::Point event_p) { SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop; //Translate mouse point into proper coord system rc->mousepoint_doc = desktop->w2d(event_p); SPCtrlLine* line = SP_CTRLLINE(item); Geom::Point nearest = snap_vector_midpoint (rc->mousepoint_doc, line->s, line->e, 0); double dist_screen = Geom::L2 (rc->mousepoint_doc - nearest) * desktop->current_zoom(); double tolerance = (double) SP_EVENT_CONTEXT(rc)->tolerance; bool close = (dist_screen < tolerance); return close; } std::vector<Geom::Point> sp_gradient_context_get_stop_intervals (GrDrag *drag, GSList **these_stops, GSList **next_stops) { std::vector<Geom::Point> coords; // for all selected draggers for (GList *i = drag->selected; i != NULL; i = i->next) { GrDragger *dragger = (GrDragger *) i->data; // remember the coord of the dragger to reselect it later coords.push_back(dragger->point); // for all draggables of dragger for (GSList const* j = dragger->draggables; j != NULL; j = j->next) { GrDraggable *d = (GrDraggable *) j->data; // find the gradient SPGradient *gradient = sp_item_gradient (d->item, d->fill_or_stroke); SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false); // these draggable types cannot have a next draggabe to insert a stop between them if (d->point_type == POINT_LG_END || d->point_type == POINT_RG_FOCUS || d->point_type == POINT_RG_R1 || d->point_type == POINT_RG_R2) { continue; } // from draggables to stops SPStop *this_stop = sp_get_stop_i (vector, d->point_i); SPStop *next_stop = sp_next_stop (this_stop); SPStop *last_stop = sp_last_stop (vector); gint fs = d->fill_or_stroke; SPItem *item = d->item; gint type = d->point_type; gint p_i = d->point_i; // if there's a next stop, if (next_stop) { GrDragger *dnext = NULL; // find its dragger // (complex because it may have different types, and because in radial, // more than one dragger may correspond to a stop, so we must distinguish) if (type == POINT_LG_BEGIN || type == POINT_LG_MID) { if (next_stop == last_stop) dnext = drag->getDraggerFor (item, POINT_LG_END, p_i+1, fs); else dnext = drag->getDraggerFor (item, POINT_LG_MID, p_i+1, fs); } else { // radial if (type == POINT_RG_CENTER || type == POINT_RG_MID1) { if (next_stop == last_stop) dnext = drag->getDraggerFor (item, POINT_RG_R1, p_i+1, fs); else dnext = drag->getDraggerFor (item, POINT_RG_MID1, p_i+1, fs); } if ((type == POINT_RG_MID2) || (type == POINT_RG_CENTER && dnext && !dnext->isSelected())) { if (next_stop == last_stop) dnext = drag->getDraggerFor (item, POINT_RG_R2, p_i+1, fs); else dnext = drag->getDraggerFor (item, POINT_RG_MID2, p_i+1, fs); } } // if both adjacent draggers selected, if (!g_slist_find(*these_stops, this_stop) && dnext && dnext->isSelected()) { // remember the coords of the future dragger to select it coords.push_back(0.5*(dragger->point + dnext->point)); // do not insert a stop now, it will confuse the loop; // just remember the stops *these_stops = g_slist_prepend (*these_stops, this_stop); *next_stops = g_slist_prepend (*next_stops, next_stop); } } } } return coords; } static void sp_gradient_context_add_stops_between_selected_stops (SPGradientContext *rc) { SPDocument *doc = NULL; GrDrag *drag = rc->_grdrag; GSList *these_stops = NULL; GSList *next_stops = NULL; std::vector<Geom::Point> coords = sp_gradient_context_get_stop_intervals (drag, &these_stops, &next_stops); if (g_slist_length(these_stops) == 0 && drag->numSelected() == 1) { // if a single stop is selected, add between that stop and the next one GrDragger *dragger = (GrDragger *) drag->selected->data; for (GSList const* j = dragger->draggables; j != NULL; j = j->next) { GrDraggable *d = (GrDraggable *) j->data; SPGradient *gradient = sp_item_gradient (d->item, d->fill_or_stroke); SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false); SPStop *this_stop = sp_get_stop_i (vector, d->point_i); SPStop *next_stop = sp_next_stop (this_stop); if (this_stop && next_stop) { these_stops = g_slist_prepend (these_stops, this_stop); next_stops = g_slist_prepend (next_stops, next_stop); } } } // now actually create the new stops GSList *i = these_stops; GSList *j = next_stops; for (; i != NULL && j != NULL; i = i->next, j = j->next) { SPStop *this_stop = (SPStop *) i->data; SPStop *next_stop = (SPStop *) j->data; gfloat offset = 0.5*(this_stop->offset + next_stop->offset); SPObject *parent = SP_OBJECT_PARENT(this_stop); if (SP_IS_GRADIENT (parent)) { doc = SP_OBJECT_DOCUMENT (parent); sp_vector_add_stop (SP_GRADIENT (parent), this_stop, next_stop, offset); sp_gradient_ensure_vector (SP_GRADIENT (parent)); } } if (g_slist_length(these_stops) > 0 && doc) { sp_document_done (doc, SP_VERB_CONTEXT_GRADIENT, _("Add gradient stop")); drag->updateDraggers(); // so that it does not automatically update draggers in idle loop, as this would deselect drag->local_change = true; // select all the old selected and new created draggers drag->selectByCoords(coords); } g_slist_free (these_stops); g_slist_free (next_stops); } double sqr(double x) {return x*x;} static void sp_gradient_simplify(SPGradientContext *rc, double tolerance) { SPDocument *doc = NULL; GrDrag *drag = rc->_grdrag; GSList *these_stops = NULL; GSList *next_stops = NULL; std::vector<Geom::Point> coords = sp_gradient_context_get_stop_intervals (drag, &these_stops, &next_stops); GSList *todel = NULL; GSList *i = these_stops; GSList *j = next_stops; for (; i != NULL && j != NULL; i = i->next, j = j->next) { SPStop *stop0 = (SPStop *) i->data; SPStop *stop1 = (SPStop *) j->data; gint i1 = g_slist_index(these_stops, stop1); if (i1 != -1) { GSList *next_next = g_slist_nth (next_stops, i1); if (next_next) { SPStop *stop2 = (SPStop *) next_next->data; if (g_slist_find(todel, stop0) || g_slist_find(todel, stop2)) continue; guint32 const c0 = sp_stop_get_rgba32(stop0); guint32 const c2 = sp_stop_get_rgba32(stop2); guint32 const c1r = sp_stop_get_rgba32(stop1); guint32 c1 = average_color (c0, c2, (stop1->offset - stop0->offset) / (stop2->offset - stop0->offset)); double diff = sqr(SP_RGBA32_R_F(c1) - SP_RGBA32_R_F(c1r)) + sqr(SP_RGBA32_G_F(c1) - SP_RGBA32_G_F(c1r)) + sqr(SP_RGBA32_B_F(c1) - SP_RGBA32_B_F(c1r)) + sqr(SP_RGBA32_A_F(c1) - SP_RGBA32_A_F(c1r)); if (diff < tolerance) todel = g_slist_prepend (todel, stop1); } } } for (i = todel; i != NULL; i = i->next) { SPStop *stop = (SPStop*) i->data; doc = SP_OBJECT_DOCUMENT (stop); Inkscape::XML::Node * parent = SP_OBJECT_REPR(stop)->parent(); parent->removeChild(SP_OBJECT_REPR(stop)); } if (g_slist_length(todel) > 0) { sp_document_done (doc, SP_VERB_CONTEXT_GRADIENT, _("Simplify gradient")); drag->local_change = true; drag->updateDraggers(); drag->selectByCoords(coords); } g_slist_free (todel); g_slist_free (these_stops); g_slist_free (next_stops); } static void sp_gradient_context_add_stop_near_point (SPGradientContext *rc, SPItem *item, Geom::Point mouse_p, guint32 /*etime*/) { // item is the selected item. mouse_p the location in doc coordinates of where to add the stop SPEventContext *ec = SP_EVENT_CONTEXT(rc); SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop; double tolerance = (double) ec->tolerance; ec->get_drag()->addStopNearPoint (item, mouse_p, tolerance/desktop->current_zoom()); sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT, _("Add gradient stop")); ec->get_drag()->updateDraggers(); } static gint sp_gradient_context_root_handler(SPEventContext *event_context, GdkEvent *event) { static bool dragging; SPDesktop *desktop = event_context->desktop; Inkscape::Selection *selection = sp_desktop_selection (desktop); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); SPGradientContext *rc = SP_GRADIENT_CONTEXT(event_context); event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px GrDrag *drag = event_context->_grdrag; g_assert (drag); gint ret = FALSE; switch (event->type) { case GDK_2BUTTON_PRESS: if ( event->button.button == 1 ) { bool over_line = false; SPCtrlLine *line = NULL; if (drag->lines) { for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) { line = (SPCtrlLine*) l->data; over_line |= sp_gradient_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y)); } } if (over_line) { // we take the first item in selection, because with doubleclick, the first click // always resets selection to the single object under cursor sp_gradient_context_add_stop_near_point(rc, SP_ITEM(selection->itemList()->data), rc->mousepoint_doc, event->button.time); } else { for (GSList const* i = selection->itemList(); i != NULL; i = i->next) { SPItem *item = SP_ITEM(i->data); SPGradientType new_type = (SPGradientType) prefs->getInt("/tools/gradient/newgradient", SP_GRADIENT_TYPE_LINEAR); guint new_fill = prefs->getInt("/tools/gradient/newfillorstroke", 1); SPGradient *vector = sp_gradient_vector_for_object(sp_desktop_document(desktop), desktop, SP_OBJECT (item), new_fill); SPGradient *priv = sp_item_set_gradient(item, vector, new_type, new_fill); sp_gradient_reset_to_userspace(priv, item); } sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT, _("Create default gradient")); } ret = TRUE; } break; case GDK_BUTTON_PRESS: if ( event->button.button == 1 && !event_context->space_panning ) { Geom::Point button_w(event->button.x, event->button.y); // save drag origin event_context->xp = (gint) button_w[Geom::X]; event_context->yp = (gint) button_w[Geom::Y]; event_context->within_tolerance = true; dragging = true; Geom::Point button_dt = to_2geom(desktop->w2d(button_w)); if (event->button.state & GDK_SHIFT_MASK) { Inkscape::Rubberband::get(desktop)->start(desktop, from_2geom(button_dt)); } else { // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to // enable Ctrl+doubleclick of exactly the selected item(s) if (!(event->button.state & GDK_CONTROL_MASK)) event_context->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, button_dt, Inkscape::SNAPSOURCE_HANDLE); rc->origin = from_2geom(button_dt); } ret = TRUE; } break; case GDK_MOTION_NOTIFY: if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK ) && !event_context->space_panning ) { if ( event_context->within_tolerance && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance ) && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) { break; // do not drag if we're within tolerance from origin } // Once the user has moved farther than tolerance from the original location // (indicating they intend to draw, not click), then always process the // motion notify coordinates as given (no snapping back to origin) event_context->within_tolerance = false; Geom::Point const motion_w(event->motion.x, event->motion.y); Geom::Point const motion_dt = event_context->desktop->w2d(motion_w); if (Inkscape::Rubberband::get(desktop)->is_started()) { Inkscape::Rubberband::get(desktop)->move(motion_dt); event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them")); } else { sp_gradient_drag(*rc, motion_dt, event->motion.state, event->motion.time); } gobble_motion_events(GDK_BUTTON1_MASK); ret = TRUE; } else { bool over_line = false; if (drag->lines) { for (GSList *l = drag->lines; l != NULL; l = l->next) { over_line |= sp_gradient_context_is_over_line (rc, (SPItem*) l->data, Geom::Point(event->motion.x, event->motion.y)); } } if (rc->cursor_addnode && !over_line) { event_context->cursor_shape = cursor_gradient_xpm; sp_event_context_update_cursor(event_context); rc->cursor_addnode = false; } else if (!rc->cursor_addnode && over_line) { event_context->cursor_shape = cursor_gradient_add_xpm; sp_event_context_update_cursor(event_context); rc->cursor_addnode = true; } } break; case GDK_BUTTON_RELEASE: event_context->xp = event_context->yp = 0; if ( event->button.button == 1 && !event_context->space_panning ) { if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) { bool over_line = false; SPCtrlLine *line = NULL; if (drag->lines) { for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) { line = (SPCtrlLine*) l->data; over_line = sp_gradient_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y)); if (over_line) break; } } if (over_line && line) { sp_gradient_context_add_stop_near_point(rc, line->item, rc->mousepoint_doc, 0); ret = TRUE; } } else { dragging = false; // unless clicked with Ctrl (to enable Ctrl+doubleclick). if (event->button.state & GDK_CONTROL_MASK) { ret = TRUE; break; } if (!event_context->within_tolerance) { // we've been dragging, either do nothing (grdrag handles that), // or rubberband-select if we have rubberband Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get(desktop); if (r->is_started() && !event_context->within_tolerance) { // this was a rubberband drag if (r->getMode() == RUBBERBAND_MODE_RECT) { Geom::OptRect const b = r->getRectangle(); drag->selectRect(*b); } } } else if (event_context->item_to_select) { // no dragging, select clicked item if any if (event->button.state & GDK_SHIFT_MASK) { selection->toggle(event_context->item_to_select); } else { selection->set(event_context->item_to_select); } } else { // click in an empty space; do the same as Esc if (drag->selected) { drag->deselectAll(); } else { selection->clear(); } } event_context->item_to_select = NULL; ret = TRUE; } Inkscape::Rubberband::get(desktop)->stop(); } break; case GDK_KEY_PRESS: switch (get_group0_keyval (&event->key)) { case GDK_Alt_L: case GDK_Alt_R: case GDK_Control_L: case GDK_Control_R: case GDK_Shift_L: case GDK_Shift_R: case GDK_Meta_L: // Meta is when you press Shift+Alt (at least on my machine) case GDK_Meta_R: sp_event_show_modifier_tip (event_context->defaultMessageContext(), event, _("<b>Ctrl</b>: snap gradient angle"), _("<b>Shift</b>: draw gradient around the starting point"), NULL); break; case GDK_x: case GDK_X: if (MOD__ALT_ONLY) { desktop->setToolboxFocusTo ("altx-grad"); ret = TRUE; } break; case GDK_A: case GDK_a: if (MOD__CTRL_ONLY && drag->isNonEmpty()) { drag->selectAll(); ret = TRUE; } break; case GDK_L: case GDK_l: if (MOD__CTRL_ONLY && drag->isNonEmpty() && drag->hasSelection()) { sp_gradient_simplify(rc, 1e-4); ret = TRUE; } break; case GDK_Escape: if (drag->selected) { drag->deselectAll(); } else { selection->clear(); } ret = TRUE; //TODO: make dragging escapable by Esc break; case GDK_Left: // move handle left case GDK_KP_Left: case GDK_KP_4: if (!MOD__CTRL) { // not ctrl gint mul = 1 + gobble_key_events( get_group0_keyval(&event->key), 0); // with any mask if (MOD__ALT) { // alt if (MOD__SHIFT) drag->selected_move_screen(mul*-10, 0); // shift else drag->selected_move_screen(mul*-1, 0); // no shift } else { // no alt if (MOD__SHIFT) drag->selected_move(mul*-10*nudge, 0); // shift else drag->selected_move(mul*-nudge, 0); // no shift } ret = TRUE; } break; case GDK_Up: // move handle up case GDK_KP_Up: case GDK_KP_8: if (!MOD__CTRL) { // not ctrl gint mul = 1 + gobble_key_events( get_group0_keyval(&event->key), 0); // with any mask if (MOD__ALT) { // alt if (MOD__SHIFT) drag->selected_move_screen(0, mul*10); // shift else drag->selected_move_screen(0, mul*1); // no shift } else { // no alt if (MOD__SHIFT) drag->selected_move(0, mul*10*nudge); // shift else drag->selected_move(0, mul*nudge); // no shift } ret = TRUE; } break; case GDK_Right: // move handle right case GDK_KP_Right: case GDK_KP_6: if (!MOD__CTRL) { // not ctrl gint mul = 1 + gobble_key_events( get_group0_keyval(&event->key), 0); // with any mask if (MOD__ALT) { // alt if (MOD__SHIFT) drag->selected_move_screen(mul*10, 0); // shift else drag->selected_move_screen(mul*1, 0); // no shift } else { // no alt if (MOD__SHIFT) drag->selected_move(mul*10*nudge, 0); // shift else drag->selected_move(mul*nudge, 0); // no shift } ret = TRUE; } break; case GDK_Down: // move handle down case GDK_KP_Down: case GDK_KP_2: if (!MOD__CTRL) { // not ctrl gint mul = 1 + gobble_key_events( get_group0_keyval(&event->key), 0); // with any mask if (MOD__ALT) { // alt if (MOD__SHIFT) drag->selected_move_screen(0, mul*-10); // shift else drag->selected_move_screen(0, mul*-1); // no shift } else { // no alt if (MOD__SHIFT) drag->selected_move(0, mul*-10*nudge); // shift else drag->selected_move(0, mul*-nudge); // no shift } ret = TRUE; } break; case GDK_r: case GDK_R: if (MOD__SHIFT_ONLY) { // First try selected dragger if (drag && drag->selected) { drag->selected_reverse_vector(); } else { // If no drag or no dragger selected, act on selection (both fill and stroke gradients) for (GSList const* i = selection->itemList(); i != NULL; i = i->next) { sp_item_gradient_reverse_vector (SP_ITEM(i->data), true); sp_item_gradient_reverse_vector (SP_ITEM(i->data), false); } } // we did an undoable action sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT, _("Invert gradient")); ret = TRUE; } break; case GDK_Insert: case GDK_KP_Insert: // with any modifiers: sp_gradient_context_add_stops_between_selected_stops (rc); ret = TRUE; break; case GDK_Delete: case GDK_KP_Delete: case GDK_BackSpace: if ( drag->selected ) { drag->deleteSelected(MOD__CTRL_ONLY); ret = TRUE; } break; default: break; } break; case GDK_KEY_RELEASE: switch (get_group0_keyval (&event->key)) { case GDK_Alt_L: case GDK_Alt_R: case GDK_Control_L: case GDK_Control_R: case GDK_Shift_L: case GDK_Shift_R: case GDK_Meta_L: // Meta is when you press Shift+Alt case GDK_Meta_R: event_context->defaultMessageContext()->clear(); break; default: break; } break; default: break; } if (!ret) { if (((SPEventContextClass *) parent_class)->root_handler) { ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event); } } return ret; } static void sp_gradient_drag(SPGradientContext &rc, Geom::Point const pt, guint /*state*/, guint32 etime) { SPDesktop *desktop = SP_EVENT_CONTEXT(&rc)->desktop; Inkscape::Selection *selection = sp_desktop_selection(desktop); SPDocument *document = sp_desktop_document(desktop); SPEventContext *ec = SP_EVENT_CONTEXT(&rc); if (!selection->isEmpty()) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); int type = prefs->getInt("/tools/gradient/newgradient", 1); int fill_or_stroke = prefs->getInt("/tools/gradient/newfillorstroke", 1); SPGradient *vector; if (ec->item_to_select) { // pick color from the object where drag started vector = sp_gradient_vector_for_object(document, desktop, ec->item_to_select, fill_or_stroke); } else { // Starting from empty space: // Sort items so that the topmost comes last GSList *items = g_slist_copy ((GSList *) selection->itemList()); items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position); // take topmost vector = sp_gradient_vector_for_object(document, desktop, SP_ITEM(g_slist_last(items)->data), fill_or_stroke); g_slist_free (items); } // HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider for all tabs SPCSSAttr *css = sp_repr_css_attr_new(); sp_repr_css_set_property(css, "fill-opacity", "1.0"); for (GSList const *i = selection->itemList(); i != NULL; i = i->next) { //FIXME: see above sp_repr_css_change_recursive(SP_OBJECT_REPR(i->data), css, "style"); sp_item_set_gradient(SP_ITEM(i->data), vector, (SPGradientType) type, fill_or_stroke); if (type == SP_GRADIENT_TYPE_LINEAR) { sp_item_gradient_set_coords (SP_ITEM(i->data), POINT_LG_BEGIN, 0, rc.origin, fill_or_stroke, true, false); sp_item_gradient_set_coords (SP_ITEM(i->data), POINT_LG_END, 0, pt, fill_or_stroke, true, false); } else if (type == SP_GRADIENT_TYPE_RADIAL) { sp_item_gradient_set_coords (SP_ITEM(i->data), POINT_RG_CENTER, 0, rc.origin, fill_or_stroke, true, false); sp_item_gradient_set_coords (SP_ITEM(i->data), POINT_RG_R1, 0, pt, fill_or_stroke, true, false); } SP_OBJECT (i->data)->requestModified(SP_OBJECT_MODIFIED_FLAG); } if (ec->_grdrag) { ec->_grdrag->updateDraggers(); // prevent regenerating draggers by selection modified signal, which sometimes // comes too late and thus destroys the knot which we will now grab: ec->_grdrag->local_change = true; // give the grab out-of-bounds values of xp/yp because we're already dragging // and therefore are already out of tolerance ec->_grdrag->grabKnot (SP_ITEM(selection->itemList()->data), type == SP_GRADIENT_TYPE_LINEAR? POINT_LG_END : POINT_RG_R1, -1, // ignore number (though it is always 1) fill_or_stroke, 99999, 99999, etime); } // We did an undoable action, but sp_document_done will be called by the knot when released // status text; we do not track coords because this branch is run once, not all the time // during drag int n_objects = g_slist_length((GSList *) selection->itemList()); rc._message_context->setF(Inkscape::NORMAL_MESSAGE, ngettext("<b>Gradient</b> for %d object; with <b>Ctrl</b> to snap angle", "<b>Gradient</b> for %d objects; with <b>Ctrl</b> to snap angle", n_objects), n_objects); } else { sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>objects</b> on which to create gradient.")); } } /* 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 :