Add Simplify LPE

(bzr r13341.1.13)

4 files changed, 125 insertions, 3 deletions

diff --git a/src/ui/tools/node-tool.cpp b/src/ui/tools/node-tool.cpp
index b1e11bd66..ce487831d 100644
--- a/src/ui/tools/node-tool.cpp
+++ b/src/ui/tools/node-tool.cpp
@@ -23,6 +23,8 @@
 #include "message-context.h"
 #include "selection.h"
 #include "shape-editor.h" // temporary!
+#include "live_effects/effect.h"
+#include "display/curve.h"
 #include "sp-clippath.h"
 #include "sp-item-group.h"
 #include "sp-mask.h"
@@ -167,6 +169,10 @@ NodeTool::~NodeTool() {
         this->desktop->remove_temporary_canvasitem(this->flash_tempitem);
     }
 
+    if (this->helperpath_tmpitem) {
+        this->desktop->remove_temporary_canvasitem(this->helperpath_tmpitem);
+    }
+
     this->_selection_changed_connection.disconnect();
     //this->_selection_modified_connection.disconnect();
     this->_mouseover_changed_connection.disconnect();
@@ -252,6 +258,7 @@ void NodeTool::setup() {
     this->flash_tempitem = NULL;
     this->flashed_item = NULL;
     this->_last_over = NULL;
+    this->helperpath_tmpitem = NULL;
 
     // read prefs before adding items to selection to prevent momentarily showing the outline
     sp_event_context_read(this, "show_handles");
@@ -278,6 +285,41 @@ void NodeTool::setup() {
     }
 
     this->desktop->emitToolSubselectionChanged(NULL); // sets the coord entry fields to inactive
+    this->update_helperpath();
+}
+
+void  NodeTool::update_helperpath(){
+    Inkscape::Selection *selection = sp_desktop_selection (this->desktop);
+    if (this->helperpath_tmpitem) {
+        this->desktop->remove_temporary_canvasitem(this->helperpath_tmpitem);
+        this->helperpath_tmpitem = NULL;
+    }
+    if (SP_IS_LPE_ITEM(selection->singleItem())) {
+        Inkscape::LivePathEffect::Effect *lpe = SP_LPE_ITEM(selection->singleItem())->getCurrentLPE();
+        if (lpe && lpe->isVisible()/* && lpe->showOrigPath()*/) {
+            if (lpe) {
+                SPCurve *c = new SPCurve();
+                SPCurve *cc = new SPCurve();
+                std::vector<Geom::PathVector> cs = lpe->getCanvasIndicators(SP_LPE_ITEM(selection->singleItem()));
+                for (std::vector<Geom::PathVector>::iterator p = cs.begin(); p != cs.end(); ++p) {
+                    cc->set_pathvector(*p);
+                    c->append(cc, false);
+                    cc->reset();
+                }
+                if (!c->is_empty()) {
+                    c->transform(selection->singleItem()->i2dt_affine());
+                    SPCanvasItem *helperpath = sp_canvas_bpath_new(sp_desktop_tempgroup(this->desktop), c);
+                    sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(helperpath),
+                       0x0000ff9A, 1.0,
+                        SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
+                    sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(helperpath), 0, SP_WIND_RULE_NONZERO);
+                    this->helperpath_tmpitem = this->desktop->add_temporary_canvasitem(helperpath,0);
+                }
+                c->unref();
+                cc->unref();
+           }
+        }
+    }
 }
 
 void NodeTool::set(const Inkscape::Preferences::Entry& value) {
@@ -392,7 +434,7 @@ void NodeTool::selection_changed(Inkscape::Selection *sel) {
     for (std::set<ShapeRecord>::iterator i = shapes.begin(); i != shapes.end(); ++i) {
         ShapeRecord const &r = *i;
 
-        if ((SP_IS_SHAPE(r.item) || SP_IS_TEXT(r.item)) &&
+        if ((SP_IS_SHAPE(r.item) || SP_IS_TEXT(r.item) || SP_IS_GROUP(r.item) || SP_IS_OBJECTGROUP(r.item)) &&
             this->_shape_editors.find(r.item) == this->_shape_editors.end())
         {
             ShapeEditor *si = new ShapeEditor(this->desktop);
@@ -416,7 +458,7 @@ bool NodeTool::root_handler(GdkEvent* event) {
     
     Inkscape::Selection *selection = desktop->selection;
     static Inkscape::Preferences *prefs = Inkscape::Preferences::get();
-    
+
     if (this->_multipath->event(this, event)) {
     	return true;
     }
@@ -433,6 +475,7 @@ bool NodeTool::root_handler(GdkEvent* event) {
     {
     case GDK_MOTION_NOTIFY: {
         combine_motion_events(desktop->canvas, event->motion, 0);
+        this->update_helperpath();
         SPItem *over_item = sp_event_context_find_item (desktop, event_point(event->button),
                 FALSE, TRUE);
 
@@ -441,7 +484,6 @@ bool NodeTool::root_handler(GdkEvent* event) {
             //ink_node_tool_update_tip(nt, event);
             this->update_tip(event);
         }
-
         // create pathflash outline
         if (prefs->getBool("/tools/nodes/pathflash_enabled")) {
             if (over_item == this->flashed_item) {
diff --git a/src/ui/tools/node-tool.h b/src/ui/tools/node-tool.h
index 42f89cd1c..9f0c40aa8 100644
--- a/src/ui/tools/node-tool.h
+++ b/src/ui/tools/node-tool.h
@@ -54,6 +54,7 @@ public:
 	static const std::string prefsPath;
 
 	virtual void setup();
+	virtual void update_helperpath();
 	virtual void set(const Inkscape::Preferences::Entry& val);
 	virtual bool root_handler(GdkEvent* event);
 
@@ -66,6 +67,7 @@ private:
 
     SPItem *flashed_item;
     Inkscape::Display::TemporaryItem *flash_tempitem;
+    Inkscape::Display::TemporaryItem *helperpath_tmpitem;
     Inkscape::UI::Selector* _selector;
     Inkscape::UI::PathSharedData* _path_data;
     SPCanvasGroup *_transform_handle_group;
diff --git a/src/ui/widget/registered-widget.cpp b/src/ui/widget/registered-widget.cpp
index 92cb3f03d..83da1a6d6 100644
--- a/src/ui/widget/registered-widget.cpp
+++ b/src/ui/widget/registered-widget.cpp
@@ -99,6 +99,59 @@ RegisteredCheckButton::on_toggled()
     _wr->setUpdating (false);
 }
 
+/*#########################################
+ * Registered TOGGLEBUTTON
+ */
+
+RegisteredToggleButton::~RegisteredToggleButton()
+{
+    _toggled_connection.disconnect();
+}
+
+RegisteredToggleButton::RegisteredToggleButton (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right, Inkscape::XML::Node* repr_in, SPDocument *doc_in, char const *active_str, char const *inactive_str)
+    : RegisteredWidget<Gtk::ToggleButton>(label)
+    , _active_str(active_str)
+    , _inactive_str(inactive_str)
+{
+    init_parent(key, wr, repr_in, doc_in);
+    setProgrammatically = false;
+    set_tooltip_text (tip);
+    set_alignment (right? 1.0 : 0.0, 0.5);
+    _toggled_connection = signal_toggled().connect (sigc::mem_fun (*this, &RegisteredToggleButton::on_toggled));
+}
+
+void
+RegisteredToggleButton::setActive (bool b)
+{
+    setProgrammatically = true;
+    set_active (b);
+    //The slave button is greyed out if the master button is untoggled
+    for (std::list<Gtk::Widget*>::const_iterator i = _slavewidgets.begin(); i != _slavewidgets.end(); ++i) {
+        (*i)->set_sensitive(b);
+    }
+    setProgrammatically = false;
+}
+
+void
+RegisteredToggleButton::on_toggled()
+{
+    if (setProgrammatically) {
+        setProgrammatically = false;
+        return;
+    }
+
+    if (_wr->isUpdating())
+        return;
+    _wr->setUpdating (true);
+
+    write_to_xml(get_active() ? _active_str : _inactive_str);
+    //The slave button is greyed out if the master button is untoggled
+    for (std::list<Gtk::Widget*>::const_iterator i = _slavewidgets.begin(); i != _slavewidgets.end(); ++i) {
+        (*i)->set_sensitive(get_active());
+    }
+
+    _wr->setUpdating (false);
+}
 
 /*#########################################
  * Registered UNITMENU
diff --git a/src/ui/widget/registered-widget.h b/src/ui/widget/registered-widget.h
index d64c09c16..d8c0e6602 100644
--- a/src/ui/widget/registered-widget.h
+++ b/src/ui/widget/registered-widget.h
@@ -163,6 +163,31 @@ protected:
     void on_toggled();
 };
 
+class RegisteredToggleButton : public RegisteredWidget<Gtk::ToggleButton> {
+public:
+    virtual ~RegisteredToggleButton();
+    RegisteredToggleButton (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right=true, Inkscape::XML::Node* repr_in=NULL, SPDocument *doc_in=NULL, char const *active_str = "true", char const *inactive_str = "false");
+
+    void setActive (bool);
+
+    std::list<Gtk::Widget*> _slavewidgets;
+
+    // a slave button is only sensitive when the master button is active
+    // i.e. a slave button is greyed-out when the master button is not checked
+
+    void setSlaveWidgets(std::list<Gtk::Widget*> btns) {
+        _slavewidgets = btns;
+    }
+
+    bool setProgrammatically; // true if the value was set by setActive, not changed by the user;
+                                // if a callback checks it, it must reset it back to false
+
+protected:
+    char const *_active_str, *_inactive_str;
+    sigc::connection  _toggled_connection;
+    void on_toggled();
+};
+
 class RegisteredUnitMenu : public RegisteredWidget<Labelled> {
 public:
     ~RegisteredUnitMenu();