void
gr_apply_gradient_to_item (SPItem *item, SPGradient *gr, SPGradientType new_type, guint new_fill, bool do_fill, bool do_stroke)
{
SPStyle *style = SP_OBJECT_STYLE (item);
if (do_fill) {
if (style && (style->fill.isPaintserver()) &&
SP_IS_GRADIENT (SP_OBJECT_STYLE_FILL_SERVER (item))) {
SPObject *server = SP_OBJECT_STYLE_FILL_SERVER (item);
if (SP_IS_LINEARGRADIENT (server)) {
sp_item_set_gradient(item, gr, SP_GRADIENT_TYPE_LINEAR, true);
} else if (SP_IS_RADIALGRADIENT (server)) {
sp_item_set_gradient(item, gr, SP_GRADIENT_TYPE_RADIAL, true);
}
} else if (new_fill) {
sp_item_set_gradient(item, gr, new_type, true);
}
}
if (do_stroke) {
if (style && (style->stroke.isPaintserver()) &&
SP_IS_GRADIENT (SP_OBJECT_STYLE_STROKE_SERVER (item))) {
SPObject *server = SP_OBJECT_STYLE_STROKE_SERVER (item);
if (SP_IS_LINEARGRADIENT (server)) {
sp_item_set_gradient(item, gr, SP_GRADIENT_TYPE_LINEAR, false);
} else if (SP_IS_RADIALGRADIENT (server)) {
sp_item_set_gradient(item, gr, SP_GRADIENT_TYPE_RADIAL, false);
}
} else if (!new_fill) {
sp_item_set_gradient(item, gr, new_type, false);
}
}
}
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."));
}
}
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);
/* Snap center to nearest magnetic point */
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, button_dt);
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;
}
