/*
* Gradient drawing and editing tool
*
* Authors:
* bulia byak <buliabyak@users.sf.net>
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Abhishek Sharma
*
* 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 "message-context.h"
#include "message-stack.h"
#include "pixmaps/cursor-gradient.xpm"
#include "pixmaps/cursor-gradient-add.xpm"
#include "ui/tools/gradient-tool.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"
#include "document-undo.h"
#include "verbs.h"
#include "selection-chemistry.h"
using Inkscape::DocumentUndo;
namespace Inkscape {
namespace UI {
namespace Tools {
static void sp_gradient_drag(GradientTool &rc, Geom::Point const pt, guint state, guint32 etime);
const std::string& GradientTool::getPrefsPath() {
return GradientTool::prefsPath;
}
const std::string GradientTool::prefsPath = "/tools/gradient";
GradientTool::GradientTool()
: ToolBase(cursor_gradient_xpm, 4, 4)
, cursor_addnode(false)
, node_added(false)
// TODO: Why are these connections stored as pointers?
, selcon(NULL)
, subselcon(NULL)
{
// TODO: This value is overwritten in the root handler
this->tolerance = 6;
}
GradientTool::~GradientTool() {
this->enableGrDrag(false);
this->selcon->disconnect();
delete this->selcon;
this->subselcon->disconnect();
delete this->subselcon;
}
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>")
};
void GradientTool::selection_changed(Inkscape::Selection*) {
GradientTool *rc = (GradientTool *) this;
GrDrag *drag = rc->_grdrag;
Inkscape::Selection *selection = this->desktop->getSelection();
if (selection == NULL) {
return;
}
guint n_obj = selection->itemList().size();
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);
}
}
void GradientTool::setup() {
ToolBase::setup();
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
if (prefs->getBool("/tools/gradient/selcue", true)) {
this->enableSelectionCue();
}
this->enableGrDrag();
Inkscape::Selection *selection = this->desktop->getSelection();
this->selcon = new sigc::connection(selection->connectChanged(
sigc::mem_fun(this, &GradientTool::selection_changed)
));
this->subselcon = new sigc::connection(this->desktop->connectToolSubselectionChanged(
sigc::hide(sigc::bind(
sigc::mem_fun(this, &GradientTool::selection_changed),
(Inkscape::Selection*)NULL
))
));
this->selection_changed(selection);
}
void
sp_gradient_context_select_next (ToolBase *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 (ToolBase *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 (GradientTool *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);
if (SP_IS_CTRLLINE(item)) {
SPCtrlLine* line = SP_CTRLLINE(item);
Geom::LineSegment ls(line->s, line->e);
Geom::Point nearest = ls.pointAt(ls.nearestTime(rc->mousepoint_doc));
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;
}
return false;
}
static 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 (std::set<GrDragger *>::const_iterator i = drag->selected.begin(); i != drag->selected.end() ; ++i ) {
GrDragger *dragger = *i;
// remember the coord of the dragger to reselect it later
coords.push_back(dragger->point);
// for all draggables of dragger
for (std::vector<GrDraggable *>::const_iterator j = dragger->draggables.begin(); j != dragger->draggables.end(); ++j) {
GrDraggable *d = *j;
// find the gradient
SPGradient *gradient = getGradient(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 = this_stop->getNextStop();
SPStop *last_stop = sp_last_stop (vector);
Inkscape::PaintTarget 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;
}
void
sp_gradient_context_add_stops_between_selected_stops (GradientTool *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 = *(drag->selected.begin());
for (std::vector<GrDraggable *>::const_iterator j = dragger->draggables.begin(); j != dragger->draggables.end(); ++j) {
GrDraggable *d = *j;
if (d->point_type == POINT_RG_FOCUS) {
/*
* There are 2 draggables at the center (start) of a radial gradient
* To avoid creating 2 separate stops, ignore this draggable point type
*/
continue;
}
SPGradient *gradient = getGradient(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);
if (this_stop) {
SPStop *next_stop = this_stop->getNextStop();
if (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;
GSList *new_stops = NULL;
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 = this_stop->parent;
if (SP_IS_GRADIENT (parent)) {
doc = parent->document;
SPStop *new_stop = sp_vector_add_stop (SP_GRADIENT (parent), this_stop, next_stop, offset);
new_stops = g_slist_prepend (new_stops, new_stop);
SP_GRADIENT(parent)->ensureVector();
}
}
if (g_slist_length(these_stops) > 0 && doc) {
DocumentUndo::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 the newly created stops
for (GSList *s = new_stops; s != NULL; s = s->next) {
drag->selectByStop((SPStop *)s->data);
}
}
g_slist_free (these_stops);
g_slist_free (next_stops);
g_slist_free (new_stops);
}
static double sqr(double x) {return x*x;}
static void
sp_gradient_simplify(GradientTool *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 = stop0->get_rgba32();
guint32 const c2 = stop2->get_rgba32();
guint32 const c1r = stop1->get_rgba32();
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 = stop->document;
Inkscape::XML::Node * parent = stop->getRepr()->parent();
parent->removeChild( stop->getRepr() );
}
if (g_slist_length(todel) > 0) {
DocumentUndo::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 (GradientTool *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
ToolBase *ec = SP_EVENT_CONTEXT(rc);
SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop;
double tolerance = (double) ec->tolerance;
SPStop *newstop = ec->get_drag()->addStopNearPoint (item, mouse_p, tolerance/desktop->current_zoom());
DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_GRADIENT,
_("Add gradient stop"));
ec->get_drag()->updateDraggers();
ec->get_drag()->local_change = true;
ec->get_drag()->selectByStop(newstop);
}
bool GradientTool::root_handler(GdkEvent* event) {
static bool dragging;
Inkscape::Selection *selection = desktop->getSelection();
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px
GrDrag *drag = this->_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.empty()) {
for (std::vector<SPCtrlLine *>::const_iterator l = drag->lines.begin(); l != drag->lines.end() && (!over_line); ++l) {
line = *l;
over_line |= sp_gradient_context_is_over_line (this, (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(this, SP_ITEM(selection->itemList().front()), this->mousepoint_doc, event->button.time);
} else {
std::vector<SPItem*> items=selection->itemList();
for (std::vector<SPItem*>::const_iterator i = items.begin();i!=items.end();++i) {
SPItem *item = *i;
SPGradientType new_type = (SPGradientType) prefs->getInt("/tools/gradient/newgradient", SP_GRADIENT_TYPE_LINEAR);
Inkscape::PaintTarget fsmode = (prefs->getInt("/tools/gradient/newfillorstroke", 1) != 0) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
SPGradient *vector = sp_gradient_vector_for_object(desktop->getDocument(), desktop, item, fsmode);
SPGradient *priv = sp_item_set_gradient(item, vector, new_type, fsmode);
sp_gradient_reset_to_userspace(priv, item);
}
DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_GRADIENT,
_("Create default gradient"));
}
ret = TRUE;
}
break;
case GDK_BUTTON_PRESS:
if ( event->button.button == 1 && !this->space_panning ) {
Geom::Point button_w(event->button.x, event->button.y);
// save drag origin
this->xp = (gint) button_w[Geom::X];
this->yp = (gint) button_w[Geom::Y];
this->within_tolerance = true;
dragging = true;
Geom::Point button_dt = desktop->w2d(button_w);
if (event->button.state & GDK_SHIFT_MASK) {
Inkscape::Rubberband::get(desktop)->start(desktop, 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)) {
this->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
}
if (!selection->isEmpty()) {
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
m.unSetup();
}
this->origin = button_dt;
}
ret = TRUE;
}
break;
case GDK_MOTION_NOTIFY:
if (dragging && ( event->motion.state & GDK_BUTTON1_MASK ) && !this->space_panning) {
if ( this->within_tolerance
&& ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
&& ( abs( (gint) event->motion.y - this->yp ) < this->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)
this->within_tolerance = false;
Geom::Point const motion_w(event->motion.x,
event->motion.y);
Geom::Point const motion_dt = this->desktop->w2d(motion_w);
if (Inkscape::Rubberband::get(desktop)->is_started()) {
Inkscape::Rubberband::get(desktop)->move(motion_dt);
this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
} else {
sp_gradient_drag(*this, motion_dt, event->motion.state, event->motion.time);
}
gobble_motion_events(GDK_BUTTON1_MASK);
ret = TRUE;
} else {
if (!drag->mouseOver() && !selection->isEmpty()) {
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
Geom::Point const motion_w(event->motion.x, event->motion.y);
Geom::Point const motion_dt = this->desktop->w2d(motion_w);
m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
m.unSetup();
}
bool over_line = false;
if (!drag->lines.empty()) {
for (std::vector<SPCtrlLine *>::const_iterator l = drag->lines.begin(); l != drag->lines.end(); ++l) {
over_line |= sp_gradient_context_is_over_line (this, (SPItem*) (*l), Geom::Point(event->motion.x, event->motion.y));
}
}
if (this->cursor_addnode && !over_line) {
this->cursor_shape = cursor_gradient_xpm;
this->sp_event_context_update_cursor();
this->cursor_addnode = false;
} else if (!this->cursor_addnode && over_line) {
this->cursor_shape = cursor_gradient_add_xpm;
this->sp_event_context_update_cursor();
this->cursor_addnode = true;
}
}
break;
case GDK_BUTTON_RELEASE:
this->xp = this->yp = 0;
if ( event->button.button == 1 && !this->space_panning ) {
bool over_line = false;
SPCtrlLine *line = NULL;
if (!drag->lines.empty()) {
for (std::vector<SPCtrlLine *>::const_iterator l = drag->lines.begin(); l != drag->lines.end() && (!over_line); ++l) {
line = *l;
over_line = sp_gradient_context_is_over_line (this, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y));
}
}
if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
if (over_line && line) {
sp_gradient_context_add_stop_near_point(this, line->item, this->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 (!this->within_tolerance) {
// we've been dragging, either do nothing (grdrag handles that),
// or rubberband-select if we have rubberband
Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
if (r->is_started() && !this->within_tolerance) {
// this was a rubberband drag
if (r->getMode() == RUBBERBAND_MODE_RECT) {
Geom::OptRect const b = r->getRectangle();
drag->selectRect(*b);
}
}
} else if (this->item_to_select) {
if (over_line && line) {
// Clicked on an existing gradient line, dont change selection. This stops
// possible change in selection during a double click with overlapping objects
} else {
// no dragging, select clicked item if any
if (event->button.state & GDK_SHIFT_MASK) {
selection->toggle(this->item_to_select);
} else {
drag->deselectAll();
selection->set(this->item_to_select);
}
}
} else {
// click in an empty space; do the same as Esc
if (!drag->selected.empty()) {
drag->deselectAll();
} else {
selection->clear();
}
}
this->item_to_select = NULL;
ret = TRUE;
}
Inkscape::Rubberband::get(desktop)->stop();
}
break;
case GDK_KEY_PRESS:
switch (get_group0_keyval (&event->key)) {
case GDK_KEY_Alt_L:
case GDK_KEY_Alt_R:
case GDK_KEY_Control_L:
case GDK_KEY_Control_R:
case GDK_KEY_Shift_L:
case GDK_KEY_Shift_R:
case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt (at least on my machine)
case GDK_KEY_Meta_R:
sp_event_show_modifier_tip (this->defaultMessageContext(), event,
_("<b>Ctrl</b>: snap gradient angle"),
_("<b>Shift</b>: draw gradient around the starting point"),
NULL);
break;
case GDK_KEY_x:
case GDK_KEY_X:
if (MOD__ALT_ONLY(event)) {
desktop->setToolboxFocusTo ("altx-grad");
ret = TRUE;
}
break;
case GDK_KEY_A:
case GDK_KEY_a:
if (MOD__CTRL_ONLY(event) && drag->isNonEmpty()) {
drag->selectAll();
ret = TRUE;
}
break;
case GDK_KEY_L:
case GDK_KEY_l:
if (MOD__CTRL_ONLY(event) && drag->isNonEmpty() && drag->hasSelection()) {
sp_gradient_simplify(this, 1e-4);
ret = TRUE;
}
break;
case GDK_KEY_Escape:
if (!drag->selected.empty()) {
drag->deselectAll();
} else {
Inkscape::SelectionHelper::selectNone(desktop);
}
ret = TRUE;
//TODO: make dragging escapable by Esc
break;
case GDK_KEY_Left: // move handle left
case GDK_KEY_KP_Left:
case GDK_KEY_KP_4:
if (!MOD__CTRL(event)) { // not ctrl
gint mul = 1 + gobble_key_events(
get_group0_keyval(&event->key), 0); // with any mask
if (MOD__ALT(event)) { // alt
if (MOD__SHIFT(event)) {
drag->selected_move_screen(mul*-10, 0); // shift
} else {
drag->selected_move_screen(mul*-1, 0); // no shift
}
} else { // no alt
if (MOD__SHIFT(event)) {
drag->selected_move(mul*-10*nudge, 0); // shift
} else {
drag->selected_move(mul*-nudge, 0); // no shift
}
}
ret = TRUE;
}
break;
case GDK_KEY_Up: // move handle up
case GDK_KEY_KP_Up:
case GDK_KEY_KP_8:
if (!MOD__CTRL(event)) { // not ctrl
gint mul = 1 + gobble_key_events(
get_group0_keyval(&event->key), 0); // with any mask
if (MOD__ALT(event)) { // alt
if (MOD__SHIFT(event)) {
drag->selected_move_screen(0, mul*10); // shift
} else {
drag->selected_move_screen(0, mul*1); // no shift
}
} else { // no alt
if (MOD__SHIFT(event)) {
drag->selected_move(0, mul*10*nudge); // shift
} else {
drag->selected_move(0, mul*nudge); // no shift
}
}
ret = TRUE;
}
break;
case GDK_KEY_Right: // move handle right
case GDK_KEY_KP_Right:
case GDK_KEY_KP_6:
if (!MOD__CTRL(event)) { // not ctrl
gint mul = 1 + gobble_key_events(
get_group0_keyval(&event->key), 0); // with any mask
if (MOD__ALT(event)) { // alt
if (MOD__SHIFT(event)) {
drag->selected_move_screen(mul*10, 0); // shift
} else {
drag->selected_move_screen(mul*1, 0); // no shift
}
} else { // no alt
if (MOD__SHIFT(event)) {
drag->selected_move(mul*10*nudge, 0); // shift
} else {
drag->selected_move(mul*nudge, 0); // no shift
}
}
ret = TRUE;
}
break;
case GDK_KEY_Down: // move handle down
case GDK_KEY_KP_Down:
case GDK_KEY_KP_2:
if (!MOD__CTRL(event)) { // not ctrl
gint mul = 1 + gobble_key_events(
get_group0_keyval(&event->key), 0); // with any mask
if (MOD__ALT(event)) { // alt
if (MOD__SHIFT(event)) {
drag->selected_move_screen(0, mul*-10); // shift
} else {
drag->selected_move_screen(0, mul*-1); // no shift
}
} else { // no alt
if (MOD__SHIFT(event)) {
drag->selected_move(0, mul*-10*nudge); // shift
} else {
drag->selected_move(0, mul*-nudge); // no shift
}
}
ret = TRUE;
}
break;
case GDK_KEY_r:
case GDK_KEY_R:
if (MOD__SHIFT_ONLY(event)) {
sp_gradient_reverse_selected_gradients(desktop);
ret = TRUE;
}
break;
case GDK_KEY_Insert:
case GDK_KEY_KP_Insert:
// with any modifiers:
sp_gradient_context_add_stops_between_selected_stops (this);
ret = TRUE;
break;
case GDK_KEY_Delete:
case GDK_KEY_KP_Delete:
case GDK_KEY_BackSpace:
ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
break;
default:
break;
}
break;
case GDK_KEY_RELEASE:
switch (get_group0_keyval (&event->key)) {
case GDK_KEY_Alt_L:
case GDK_KEY_Alt_R:
case GDK_KEY_Control_L:
case GDK_KEY_Control_R:
case GDK_KEY_Shift_L:
case GDK_KEY_Shift_R:
case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt
case GDK_KEY_Meta_R:
this->defaultMessageContext()->clear();
break;
default:
break;
}
break;
default:
break;
}
if (!ret) {
ret = ToolBase::root_handler(event);
}
return ret;
}
static void sp_gradient_drag(GradientTool &rc, Geom::Point const pt, guint /*state*/, guint32 etime)
{
SPDesktop *desktop = SP_EVENT_CONTEXT(&rc)->desktop;
Inkscape::Selection *selection = desktop->getSelection();
SPDocument *document = desktop->getDocument();
ToolBase *ec = SP_EVENT_CONTEXT(&rc);
if (!selection->isEmpty()) {
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
int type = prefs->getInt("/tools/gradient/newgradient", 1);
Inkscape::PaintTarget fill_or_stroke = (prefs->getInt("/tools/gradient/newfillorstroke", 1) != 0) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
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
std::vector<SPItem*> items(selection->itemList());
sort(items.begin(),items.end(),sp_item_repr_compare_position);
// take topmost
vector = sp_gradient_vector_for_object(document, desktop, SP_ITEM(items.back()), fill_or_stroke);
}
// 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");
std::vector<SPItem*> itemlist = selection->itemList();
for (std::vector<SPItem*>::const_iterator i = itemlist.begin();i!=itemlist.end();++i) {
//FIXME: see above
sp_repr_css_change_recursive((*i)->getRepr(), css, "style");
sp_item_set_gradient(*i, vector, (SPGradientType) type, fill_or_stroke);
if (type == SP_GRADIENT_TYPE_LINEAR) {
sp_item_gradient_set_coords (*i, POINT_LG_BEGIN, 0, rc.origin, fill_or_stroke, true, false);
sp_item_gradient_set_coords (*i, POINT_LG_END, 0, pt, fill_or_stroke, true, false);
} else if (type == SP_GRADIENT_TYPE_RADIAL) {
sp_item_gradient_set_coords (*i, POINT_RG_CENTER, 0, rc.origin, fill_or_stroke, true, false);
sp_item_gradient_set_coords (*i, POINT_RG_R1, 0, pt, fill_or_stroke, true, false);
}
(*i)->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 (selection->itemList()[0],
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 SPDocumentUndo::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 = selection->itemList().size();
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 {
desktop->getMessageStack()->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:fileencoding=utf-8:textwidth=99 :