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diff --git a/src/gradient-drag.cpp b/src/gradient-drag.cpp
index 5b3b586b241cc9f8b04e0a5dfe784bea356a9684..5801489fe0db2114dd225072547bf570da634644 100644 (file)
--- a/src/gradient-drag.cpp
+++ b/src/gradient-drag.cpp
#include "display/sp-ctrlline.h"
#include "xml/repr.h"
+#include "svg/css-ostringstream.h"
+
+#include "svg/svg.h"
#include "prefs-utils.h"
#include "sp-item.h"
#include "gradient-drag.h"
#include "sp-stop.h"
+#include "snap.h"
+#include "sp-namedview.h"
+
+
#define GR_KNOT_COLOR_NORMAL 0xffffff00
#define GR_KNOT_COLOR_SELECTED 0x0000ff00
SP_KNOT_SHAPE_SQUARE, //POINT_LG_BEGIN
SP_KNOT_SHAPE_CIRCLE, //POINT_LG_END
SP_KNOT_SHAPE_DIAMOND, //POINT_LG_MID
- SP_KNOT_SHAPE_DIAMOND,
- SP_KNOT_SHAPE_CIRCLE,
- SP_KNOT_SHAPE_CIRCLE,
+ SP_KNOT_SHAPE_SQUARE, // POINT_RG_CENTER
+ SP_KNOT_SHAPE_CIRCLE, // POINT_RG_R1
+ SP_KNOT_SHAPE_CIRCLE, // POINT_RG_R2
SP_KNOT_SHAPE_CROSS, // POINT_RG_FOCUS
SP_KNOT_SHAPE_DIAMOND, //POINT_RG_MID1
SP_KNOT_SHAPE_DIAMOND //POINT_RG_MID2
}
/**
-When a _query_style_signal is received, check that \a property requests fill/stroke (otherwise
+When a _query_style_signal is received, check that \a property requests fill/stroke/opacity (otherwise
skip), and fill the \a style with the averaged color of all draggables of the selected dragger, if
any.
*/
{
GrDrag *drag = (GrDrag *) data;
- if (property != QUERY_STYLE_PROPERTY_FILL && property != QUERY_STYLE_PROPERTY_STROKE) {
+ if (property != QUERY_STYLE_PROPERTY_FILL && property != QUERY_STYLE_PROPERTY_STROKE && property != QUERY_STYLE_PROPERTY_MASTEROPACITY) {
return QUERY_STYLE_NOTHING;
}
style->stroke.set = TRUE;
style->stroke.type = SP_PAINT_TYPE_COLOR;
- style->fill_opacity.value = SP_SCALE24_FROM_FLOAT (cf[3]);
+ style->fill_opacity.value = SP_SCALE24_FROM_FLOAT (1.0);
style->fill_opacity.set = TRUE;
- style->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (cf[3]);
+ style->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (1.0);
style->stroke_opacity.set = TRUE;
+
+ style->opacity.value = SP_SCALE24_FROM_FLOAT (cf[3]);
+ style->opacity.set = TRUE;
}
return ret;
if (css->attribute("stop-color"))
sp_repr_css_set_property (stop, "stop-color", css->attribute("stop-color"));
- // any of opacity properties, in order of increasing priority:
- if (css->attribute("flood-opacity"))
- sp_repr_css_set_property (stop, "stop-opacity", css->attribute("flood-color"));
-
- if (css->attribute("opacity")) // TODO: multiply
- sp_repr_css_set_property (stop, "stop-opacity", css->attribute("color"));
-
- if (css->attribute("stroke-opacity")) // TODO: multiply
- sp_repr_css_set_property (stop, "stop-opacity", css->attribute("stroke-opacity"));
-
- if (css->attribute("fill-opacity")) // TODO: multiply
- sp_repr_css_set_property (stop, "stop-opacity", css->attribute("fill-opacity"));
- if ((css->attribute("fill") && !strcmp(css->attribute("fill"), "none")) ||
- (css->attribute("stroke") && !strcmp(css->attribute("stroke"), "none")))
- sp_repr_css_set_property (stop, "stop-opacity", "0"); // if set to none, don't change color, set opacity to 0
-
- if (css->attribute("stop-opacity"))
+ if (css->attribute("stop-opacity")) { // direct setting of stop-opacity has priority
sp_repr_css_set_property (stop, "stop-opacity", css->attribute("stop-opacity"));
+ } else { // multiply all opacity properties:
+ gdouble accumulated = 1.0;
+ accumulated *= sp_svg_read_percentage(css->attribute("flood-opacity"), 1.0);
+ accumulated *= sp_svg_read_percentage(css->attribute("opacity"), 1.0);
+ accumulated *= sp_svg_read_percentage(css->attribute("stroke-opacity"), 1.0);
+ accumulated *= sp_svg_read_percentage(css->attribute("fill-opacity"), 1.0);
+
+ Inkscape::CSSOStringStream os;
+ os << accumulated;
+ sp_repr_css_set_property (stop, "stop-opacity", os.str().c_str());
+
+ if ((css->attribute("fill") && !strcmp(css->attribute("fill"), "none")) ||
+ (css->attribute("stroke") && !strcmp(css->attribute("stroke"), "none")))
+ sp_repr_css_set_property (stop, "stop-opacity", "0"); // if set to none, don't change color, set opacity to 0
+ }
if (!stop->attributeList()) { // nothing for us here, pass it on
sp_repr_css_attr_unref(stop);
GrDragger* dragger = (GrDragger*) sel->data;
for (GSList const* i = dragger->draggables; i != NULL; i = i->next) { // for all draggables of dragger
GrDraggable *draggable = (GrDraggable *) i->data;
-
+
drag->local_change = true;
sp_item_gradient_stop_set_style (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke, stop);
}
- }
+ }
//sp_repr_css_print(stop);
sp_repr_css_attr_unref(stop);
desktop->gr_point_i = 0;
desktop->gr_fill_or_stroke = true;
}
-
- deselect_all();
+
+ deselect_all();
for (GList *l = this->draggers; l != NULL; l = l->next) {
delete ((GrDragger *) l->data);
}
@@ -354,13 +363,13 @@ snap_vector_midpoint (NR::Point p, NR::Point begin, NR::Point end, double snap)
double length = NR::L2(end - begin);
NR::Point be = (end - begin) / length;
double r = NR::dot(p - begin, be);
-
+
if (r < 0.0) return begin;
- if (r > length) return end;
-
- double snapdist = length * snap;
- double r_snapped = (snap==0) ? r : floor(r/(snapdist + 0.5)) * snapdist;
-
+ if (r > length) return end;
+
+ double snapdist = length * snap;
+ double r_snapped = (snap==0) ? r : floor(r/(snapdist + 0.5)) * snapdist;
+
return (begin + r_snapped * be);
}
@@ -424,19 +433,26 @@ gr_knot_moved_handler(SPKnot *knot, NR::Point const *ppointer, guint state, gpoi
}
}
-
if (!((state & GDK_SHIFT_MASK) || ((state & GDK_CONTROL_MASK) && (state & GDK_MOD1_MASK)))) {
- // See if we need to snap to any of the levels
- for (guint i = 0; i < dragger->parent->hor_levels.size(); i++) {
- if (fabs(p[NR::Y] - dragger->parent->hor_levels[i]) < snap_dist) {
- p[NR::Y] = dragger->parent->hor_levels[i];
- sp_knot_moveto (knot, &p);
+ // Try snapping to the grid or guides
+ SnapManager const &m = dragger->parent->desktop->namedview->snap_manager;
+ Inkscape::SnappedPoint s = m.freeSnap(Inkscape::Snapper::SNAP_POINT | Inkscape::Snapper::BBOX_POINT, p, NULL);
+ if (s.getDistance() < 1e6) {
+ p = s.getPoint();
+ sp_knot_moveto (knot, &p);
+ } else {
+ // No snapping so far, let's see if we need to snap to any of the levels
+ for (guint i = 0; i < dragger->parent->hor_levels.size(); i++) {
+ if (fabs(p[NR::Y] - dragger->parent->hor_levels[i]) < snap_dist) {
+ p[NR::Y] = dragger->parent->hor_levels[i];
+ sp_knot_moveto (knot, &p);
+ }
}
- }
- for (guint i = 0; i < dragger->parent->vert_levels.size(); i++) {
- if (fabs(p[NR::X] - dragger->parent->vert_levels[i]) < snap_dist) {
- p[NR::X] = dragger->parent->vert_levels[i];
- sp_knot_moveto (knot, &p);
+ for (guint i = 0; i < dragger->parent->vert_levels.size(); i++) {
+ if (fabs(p[NR::X] - dragger->parent->vert_levels[i]) < snap_dist) {
+ p[NR::X] = dragger->parent->vert_levels[i];
+ sp_knot_moveto (knot, &p);
+ }
}
}
}
@@ -517,7 +533,7 @@ gr_knot_moved_handler(SPKnot *knot, NR::Point const *ppointer, guint state, gpoi
p += move;
sp_knot_moveto (knot, &p);
}
-
+
g_slist_free(snap_vectors);
}
@@ -530,11 +546,11 @@ gr_knot_moved_handler(SPKnot *knot, NR::Point const *ppointer, guint state, gpoi
}
dragger->updateDependencies(false);
-
+
drag->keep_selection = (bool) g_list_find(drag->selected, dragger);
}
-
-
+
+
/**
Called when a midpoint knot is dragged.
*/
@@ -545,7 +561,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
GrDrag *drag = dragger->parent;
// a midpoint dragger can (logically) only contain one GrDraggable
GrDraggable *draggable = (GrDraggable *) dragger->draggables->data;
-
+
// FIXME: take from prefs
double snap_fraction = 0.1;
@@ -557,13 +573,13 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
server = SP_OBJECT_STYLE_FILL_SERVER (draggable->item);
else
server = SP_OBJECT_STYLE_STROKE_SERVER (draggable->item);
-
-
+
+
// get begin and end points between which dragging is allowed:
// the draglimits are between knot(lowest_i - 1) and knot(highest_i + 1)
GSList *moving = NULL;
moving = g_slist_append(moving, dragger);
-
+
guint lowest_i = draggable->point_i;
guint highest_i = draggable->point_i;
GrDragger *lowest_dragger = dragger;
@@ -574,7 +590,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
while ( true )
{
d_add = drag->getDraggerFor(draggable->item, draggable->point_type, lowest_i - 1, draggable->fill_or_stroke);
- if ( d_add && g_list_find(drag->selected, d_add) ) {
+ if ( d_add && g_list_find(drag->selected, d_add) ) {
lowest_i = lowest_i - 1;
moving = g_slist_prepend(moving, d_add);
lowest_dragger = d_add;
@@ -582,11 +598,11 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
break;
}
}
-
+
while ( true )
{
d_add = drag->getDraggerFor(draggable->item, draggable->point_type, highest_i + 1, draggable->fill_or_stroke);
- if ( d_add && g_list_find(drag->selected, d_add) ) {
+ if ( d_add && g_list_find(drag->selected, d_add) ) {
highest_i = highest_i + 1;
moving = g_slist_append(moving, d_add);
highest_dragger = d_add;
@@ -595,7 +611,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
}
}
}
-
+
if ( SP_IS_LINEARGRADIENT(server) ) {
GrDragger *d_temp;
if (lowest_i == 1) {
@@ -604,7 +620,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
d_temp = drag->getDraggerFor (draggable->item, POINT_LG_MID, lowest_i - 1, draggable->fill_or_stroke);
}
if (d_temp) begin = d_temp->point;
-
+
d_temp = drag->getDraggerFor (draggable->item, POINT_LG_MID, highest_i + 1, draggable->fill_or_stroke);
if (d_temp == NULL) {
d_temp = drag->getDraggerFor (draggable->item, POINT_LG_END, 0, draggable->fill_or_stroke);
@@ -618,7 +634,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
d_temp = drag->getDraggerFor (draggable->item, draggable->point_type, lowest_i - 1, draggable->fill_or_stroke);
}
if (d_temp) begin = d_temp->point;
-
+
d_temp = drag->getDraggerFor (draggable->item, draggable->point_type, highest_i + 1, draggable->fill_or_stroke);
if (d_temp == NULL) {
d_temp = drag->getDraggerFor (draggable->item, (draggable->point_type==POINT_RG_MID1) ? POINT_RG_R1 : POINT_RG_R2, 0, draggable->fill_or_stroke);
@@ -628,14 +644,14 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
NR::Point low_lim = dragger->point - (lowest_dragger->point - begin);
NR::Point high_lim = dragger->point - (highest_dragger->point - end);
-
+
if (state & GDK_CONTROL_MASK) {
p = snap_vector_midpoint (p, low_lim, high_lim, snap_fraction);
} else {
p = snap_vector_midpoint (p, low_lim, high_lim, 0);
}
NR::Point displacement = p - dragger->point;
-
+
for (GSList const* i = moving; i != NULL; i = i->next) {
GrDragger *drg = (GrDragger*) i->data;
SPKnot *drgknot = drg->knot;
@@ -644,7 +660,7 @@ gr_knot_moved_midpoint_handler(SPKnot *knot, NR::Point const *ppointer, guint st
drg->fireDraggables (false);
drg->updateDependencies(false);
}
-
+
drag->keep_selection = is_selected;
}
dragger->updateDependencies(true);
// we did an undoable action
- sp_document_done (sp_desktop_document (dragger->parent->desktop), SP_VERB_CONTEXT_GRADIENT,
+ sp_document_done (sp_desktop_document (dragger->parent->desktop), SP_VERB_CONTEXT_GRADIENT,
_("Move gradient handle"));
}
/**
Called when a dragger knot is clicked; selects the dragger or deletes it depending on the
-state of the keyboard keys
+state of the keyboard keys
*/
static void
gr_knot_clicked_handler(SPKnot *knot, guint state, gpointer data)
GrDragger *dragger = (GrDragger *) data;
GrDraggable *draggable = (GrDraggable *) dragger->draggables->data;
if (!draggable) return;
-
+
if ( (state & GDK_CONTROL_MASK) && (state & GDK_MOD1_MASK ) ) {
// delete this knot from vector
SPGradient *gradient = sp_item_gradient (draggable->item, draggable->fill_or_stroke);
- gradient = sp_gradient_get_vector (gradient, false);
+ gradient = sp_gradient_get_vector (gradient, false);
if (gradient->vector.stops.size() > 2) { // 2 is the minimum
- SPStop *stop;
+ SPStop *stop = NULL;
switch (draggable->point_type) { // if we delete first or last stop, move the next/previous to the edge
case POINT_LG_BEGIN:
case POINT_RG_CENTER:
stop = sp_get_stop_i(gradient, draggable->point_i);
break;
}
-
+
SP_OBJECT_REPR(gradient)->removeChild(SP_OBJECT_REPR(stop));
- sp_document_done (SP_OBJECT_DOCUMENT (gradient), SP_VERB_CONTEXT_GRADIENT,
+ sp_document_done (SP_OBJECT_DOCUMENT (gradient), SP_VERB_CONTEXT_GRADIENT,
_("Delete gradient stop"));
}
} else {
// select the dragger
dragger->point_original = dragger->point;
-
+
if ( state & GDK_SHIFT_MASK ) {
dragger->parent->setSelected (dragger, true, false);
} else {
@@ -786,7 +802,9 @@ GrDragger::fireDraggables (bool write_repr, bool scale_radial, bool merging_focu
// to the center, unless it's the first update upon merge when we must snap it to the point
if (merging_focus ||
!(draggable->point_type == POINT_RG_FOCUS && this->isA(draggable->item, POINT_RG_CENTER, draggable->point_i, draggable->fill_or_stroke)))
+ {
sp_item_gradient_set_coords (draggable->item, draggable->point_type, draggable->point_i, this->point, draggable->fill_or_stroke, write_repr, scale_radial);
+ }
}
}
}
}
// disable merging of midpoints.
- if ( (this->point_type == POINT_LG_MID) || (da2->point_type == POINT_LG_MID)
+ if ( (this->point_type == POINT_LG_MID) || (da2->point_type == POINT_LG_MID)
|| (this->point_type == POINT_RG_MID1) || (da2->point_type == POINT_RG_MID1)
|| (this->point_type == POINT_RG_MID2) || (da2->point_type == POINT_RG_MID2) )
return false;
-
+
return true;
}
@@ -970,17 +988,17 @@ GrDragger::updateMidstopDependencies (GrDraggable *draggable, bool write_repr) {
server = SP_OBJECT_STYLE_STROKE_SERVER (draggable->item);
guint num = SP_GRADIENT(server)->vector.stops.size();
if (num <= 2) return;
-
+
if ( SP_IS_LINEARGRADIENT(server) ) {
for ( guint i = 1; i < num - 1; i++ ) {
this->moveOtherToDraggable (draggable->item, POINT_LG_MID, i, draggable->fill_or_stroke, write_repr);
- }
+ }
} else if ( SP_IS_RADIALGRADIENT(server) ) {
for ( guint i = 1; i < num - 1; i++ ) {
this->moveOtherToDraggable (draggable->item, POINT_RG_MID1, i, draggable->fill_or_stroke, write_repr);
this->moveOtherToDraggable (draggable->item, POINT_RG_MID2, i, draggable->fill_or_stroke, write_repr);
- }
- }
+ }
+ }
}
{
// the begin point is dependent only when dragging with ctrl+shift
this->moveOtherToDraggable (draggable->item, POINT_LG_BEGIN, 0, draggable->fill_or_stroke, write_repr);
-
+
this->updateMidstopDependencies (draggable, write_repr);
}
break;
// connect knot's signals
if ( (draggable) // it can be NULL if a node in unsnapped (eg. focus point unsnapped from center)
// luckily, midstops never snap to other nodes so are never unsnapped...
- && ( (draggable->point_type == POINT_LG_MID)
- || (draggable->point_type == POINT_RG_MID1)
+ && ( (draggable->point_type == POINT_LG_MID)
+ || (draggable->point_type == POINT_RG_MID1)
|| (draggable->point_type == POINT_RG_MID2) ) )
{
this->handler_id = g_signal_connect (G_OBJECT (this->knot), "moved", G_CALLBACK (gr_knot_moved_midpoint_handler), this);
/**
-\brief Deselect all stops/draggers
+\brief Deselect all stops/draggers (private)
*/
void
GrDrag::deselect_all()
selected = g_list_remove(selected, selected->data);
}
}
-
+
+/**
+\brief Deselect all stops/draggers (public; emits signal)
+*/
+void
+GrDrag::deselectAll()
+{
+ deselect_all();
+ this->desktop->emitToolSubselectionChanged(NULL);
+}
+
+
/**
\brief Select a dragger
\param dragger The dragger to select
GrDrag::setSelected (GrDragger *dragger, bool add_to_selection, bool override)
{
GrDragger *seldragger = NULL;
-
+
if (add_to_selection) {
if (!dragger) return;
if (override) {
}
}
- GrDragger *new_dragger = new GrDragger(this, p, draggable);
+ GrDragger *new_dragger = new GrDragger(this, p, draggable);
// fixme: draggers should be added AFTER the last one: this way tabbing through them will be from begin to end.
this->draggers = g_list_append (this->draggers, new_dragger);
}
for (GSList const* i = this->selection->itemList(); i != NULL; i = i->next) {
SPItem *item = SP_ITEM(i->data);
- NR::Rect rect = sp_item_bbox_desktop (item);
- // Remember the edges of the bbox and the center axis
- hor_levels.push_back(rect.min()[NR::Y]);
- hor_levels.push_back(rect.max()[NR::Y]);
- hor_levels.push_back(0.5 * (rect.min()[NR::Y] + rect.max()[NR::Y]));
- vert_levels.push_back(rect.min()[NR::X]);
- vert_levels.push_back(rect.max()[NR::X]);
- vert_levels.push_back(0.5 * (rect.min()[NR::X] + rect.max()[NR::X]));
+ NR::Maybe<NR::Rect> rect = sp_item_bbox_desktop (item);
+ if (rect) {
+ // Remember the edges of the bbox and the center axis
+ hor_levels.push_back(rect->min()[NR::Y]);
+ hor_levels.push_back(rect->max()[NR::Y]);
+ hor_levels.push_back(0.5 * (rect->min()[NR::Y] + rect->max()[NR::Y]));
+ vert_levels.push_back(rect->min()[NR::X]);
+ vert_levels.push_back(rect->max()[NR::X]);
+ vert_levels.push_back(0.5 * (rect->min()[NR::X] + rect->max()[NR::X]));
+ }
}
}
/*
if (selected == NULL)
return;
-
+
if ( (g_list_length(selected) == 1) )
selected->point += NR::Point (x, y);
selected->point_original = selected->point;
// we did an undoable action
sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT,
_("Move gradient handle"));
-*/
+*/
}
void
}
+// FIXME: i.m.o. an ugly function that I just made to work, but... aargh! (Johan)
+void
+GrDrag::deleteSelected (bool just_one)
+{
+ if (!selected) return;
+
+ SPDocument *document = false;
+
+ struct StructStopInfo {
+ SPStop * spstop;
+ GrDraggable * draggable;
+ SPGradient * gradient;
+ SPGradient * vector;
+ };
+
+ GSList *midstoplist = NULL; // list of stops that must be deleted (will be deleted first)
+ GSList *endstoplist = NULL; // list of stops that must be deleted
+ while (selected) {
+ GrDragger *dragger = (GrDragger*) selected->data;
+ for (GSList * drgble = dragger->draggables; drgble != NULL; drgble = drgble->next) {
+ GrDraggable *draggable = (GrDraggable*) drgble->data;
+ SPGradient *gradient = sp_item_gradient (draggable->item, draggable->fill_or_stroke);
+ SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false);
+
+ switch (draggable->point_type) {
+ case POINT_LG_MID:
+ case POINT_RG_MID1:
+ case POINT_RG_MID2:
+ {
+ SPStop *stop = sp_get_stop_i(vector, draggable->point_i);
+ // check if already present in list. (e.g. when both RG_MID1 and RG_MID2 were selected)
+ bool present = false;
+ for (GSList const * l = midstoplist; l != NULL; l = l->next) {
+ if ( (SPStop*)l->data == stop ) {
+ present = true;
+ break; // no need to search further.
+ }
+ }
+ if (!present)
+ midstoplist = g_slist_append(midstoplist, stop);
+ }
+ break;
+ case POINT_LG_BEGIN:
+ case POINT_LG_END:
+ case POINT_RG_CENTER:
+ case POINT_RG_R1:
+ case POINT_RG_R2:
+ {
+ SPStop *stop = NULL;
+ if ( (draggable->point_type == POINT_LG_BEGIN) || (draggable->point_type == POINT_RG_CENTER) ) {
+ stop = sp_first_stop(vector);
+ } else {
+ stop = sp_last_stop(vector);
+ }
+ if (stop) {
+ StructStopInfo *stopinfo = new StructStopInfo;
+ stopinfo->spstop = stop;
+ stopinfo->draggable = draggable;
+ stopinfo->gradient = gradient;
+ stopinfo->vector = vector;
+ // check if already present in list. (e.g. when both R1 and R2 were selected)
+ bool present = false;
+ for (GSList const * l = endstoplist; l != NULL; l = l->next) {
+ if ( ((StructStopInfo*)l->data)->spstop == stopinfo->spstop ) {
+ present = true;
+ break; // no need to search further.
+ }
+ }
+ if (!present)
+ endstoplist = g_slist_append(endstoplist, stopinfo);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ selected = g_list_remove(selected, dragger);
+ if ( just_one ) break; // iterate once if just_one is set.
+ }
+ while (midstoplist) {
+ SPStop *stop = (SPStop*) midstoplist->data;
+ document = SP_OBJECT_DOCUMENT (stop);
+ Inkscape::XML::Node * parent = SP_OBJECT_REPR(stop)->parent();
+ parent->removeChild(SP_OBJECT_REPR(stop));
+ midstoplist = g_slist_remove(midstoplist, stop);
+ }
+ while (endstoplist) {
+ StructStopInfo *stopinfo = (StructStopInfo*) endstoplist->data;
+ document = SP_OBJECT_DOCUMENT (stopinfo->spstop);
+
+ // 2 is the minimum, cannot delete more than that without deleting the whole vector
+ // cannot use vector->vector.stops.size() because the vector might be invalidated by deletion of a midstop
+ // manually count the children, don't know if there already exists a function for this...
+ int len = 0;
+ for ( SPObject *child = sp_object_first_child(stopinfo->vector) ;
+ child != NULL ;
+ child = SP_OBJECT_NEXT(child) )
+ {
+ if ( SP_IS_STOP(child) ) len ++;
+ }
+ if (len > 2)
+ {
+ switch (stopinfo->draggable->point_type) {
+ case POINT_LG_BEGIN:
+ {
+ SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop));
+
+ SPLinearGradient *lg = SP_LINEARGRADIENT(stopinfo->gradient);
+ NR::Point oldbegin = NR::Point (lg->x1.computed, lg->y1.computed);
+ NR::Point end = NR::Point (lg->x2.computed, lg->y2.computed);
+ SPStop *stop = sp_first_stop(stopinfo->vector);
+ gdouble offset = stop->offset;
+ NR::Point newbegin = oldbegin + offset * (end - oldbegin);
+ lg->x1.computed = newbegin[NR::X];
+ lg->y1.computed = newbegin[NR::Y];
+
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(stopinfo->gradient);
+ sp_repr_set_svg_double(repr, "x1", lg->x1.computed);
+ sp_repr_set_svg_double(repr, "y1", lg->y1.computed);
+ stop->offset = 0;
+ sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", 0);
+
+ // iterate through midstops to set new offset values such that they won't move on canvas.
+ SPStop *laststop = sp_last_stop(stopinfo->vector);
+ stop = sp_next_stop(stop);
+ while ( stop != laststop ) {
+ stop->offset = (stop->offset - offset)/(1 - offset);
+ sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset);
+ stop = sp_next_stop(stop);
+ }
+ }
+ break;
+ case POINT_LG_END:
+ {
+ SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop));
+
+ SPLinearGradient *lg = SP_LINEARGRADIENT(stopinfo->gradient);
+ NR::Point begin = NR::Point (lg->x1.computed, lg->y1.computed);
+ NR::Point oldend = NR::Point (lg->x2.computed, lg->y2.computed);
+ SPStop *laststop = sp_last_stop(stopinfo->vector);
+ gdouble offset = laststop->offset;
+ NR::Point newend = begin + offset * (oldend - begin);
+ lg->x2.computed = newend[NR::X];
+ lg->y2.computed = newend[NR::Y];
+
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(stopinfo->gradient);
+ sp_repr_set_svg_double(repr, "x2", lg->x2.computed);
+ sp_repr_set_svg_double(repr, "y2", lg->y2.computed);
+ laststop->offset = 1;
+ sp_repr_set_css_double (SP_OBJECT_REPR (laststop), "offset", 1);
+
+ // iterate through midstops to set new offset values such that they won't move on canvas.
+ SPStop *stop = sp_first_stop(stopinfo->vector);
+ stop = sp_next_stop(stop);
+ while ( stop != laststop ) {
+ stop->offset = stop->offset / offset;
+ sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset);
+ stop = sp_next_stop(stop);
+ }
+ }
+ break;
+ case POINT_RG_CENTER:
+ {
+ SPStop *newfirst = sp_next_stop (stopinfo->spstop);
+ if (newfirst) {
+ newfirst->offset = 0;
+ sp_repr_set_css_double (SP_OBJECT_REPR (newfirst), "offset", 0);
+ }
+ SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop));
+ }
+ break;
+ case POINT_RG_R1:
+ case POINT_RG_R2:
+ SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop));
+
+ SPRadialGradient *rg = SP_RADIALGRADIENT(stopinfo->gradient);
+ double oldradius = rg->r.computed;
+ SPStop *laststop = sp_last_stop(stopinfo->vector);
+ gdouble offset = laststop->offset;
+ double newradius = offset * oldradius;
+ rg->r.computed = newradius;
+
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(rg);
+ sp_repr_set_svg_double(repr, "r", rg->r.computed);
+ laststop->offset = 1;
+ sp_repr_set_css_double (SP_OBJECT_REPR (laststop), "offset", 1);
+
+ // iterate through midstops to set new offset values such that they won't move on canvas.
+ SPStop *stop = sp_first_stop(stopinfo->vector);
+ stop = sp_next_stop(stop);
+ while ( stop != laststop ) {
+ stop->offset = stop->offset / offset;
+ sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset);
+ stop = sp_next_stop(stop);
+ }
+ break;
+ }
+ }
+ else
+ { // delete the gradient from the object. set fill to unset FIXME: set to fill of unselected node?
+ SPCSSAttr *css = sp_repr_css_attr_new ();
+
+ // stopinfo->spstop is the selected stop
+ Inkscape::XML::Node *unselectedrepr = SP_OBJECT_REPR(stopinfo->vector)->firstChild();
+ if (unselectedrepr == SP_OBJECT_REPR(stopinfo->spstop) ) {
+ unselectedrepr = unselectedrepr->next();
+ }
+
+ if (unselectedrepr == NULL) {
+ if (stopinfo->draggable->fill_or_stroke) {
+ sp_repr_css_unset_property (css, "fill");
+ } else {
+ sp_repr_css_unset_property (css, "stroke");
+ }
+ } else {
+ SPCSSAttr *stopcss = sp_repr_css_attr(unselectedrepr, "style");
+ if (stopinfo->draggable->fill_or_stroke) {
+ sp_repr_css_set_property(css, "fill", sp_repr_css_property(stopcss, "stop-color", "inkscape:unset"));
+ sp_repr_css_set_property(css, "fill-opacity", sp_repr_css_property(stopcss, "stop-opacity", "1"));
+ } else {
+ sp_repr_css_set_property(css, "stroke", sp_repr_css_property(stopcss, "stop-color", "inkscape:unset"));
+ sp_repr_css_set_property(css, "stroke-opacity", sp_repr_css_property(stopcss, "stop-opacity", "1"));
+ }
+ sp_repr_css_attr_unref (stopcss);
+ }
+
+ sp_repr_css_change (SP_OBJECT_REPR (stopinfo->draggable->item), css, "style");
+ sp_repr_css_attr_unref (css);
+ }
+
+ endstoplist = g_slist_remove(endstoplist, stopinfo);
+ delete stopinfo;
+ }
+
+ if (document) {
+ sp_document_done ( document, SP_VERB_CONTEXT_GRADIENT, _("Delete gradient stop(s)") );
+ }
+}
+
+
/*
Local Variables:
mode:c++