Code

Applying fixes for gcc 4.3 build issues (closes LP: #169115)
[inkscape.git] / src / connector-context.cpp
index d8e7b879710430e9cf72a80dd36b7335ed9fbecb..6da465f2a48691557a97d0ffb71f5bbd95bc4030 100644 (file)
@@ -9,7 +9,7 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  *
  * TODO:
- *  o  Have shapes avoid coonvex hulls of objects, rather than their
+ *  o  Have shapes avoid convex hulls of objects, rather than their
  *     bounding box.  Possibly implement the unfinished ConvexHull
  *     class in libnr.
  *     (HOWEVER, using the convex hull C of a shape S does the wrong thing if a
  *     an object involves going inside C but without entering S.)
  *  o  Draw connectors to shape edges rather than bounding box.
  *  o  Show a visual indicator for objects with the 'avoid' property set.
+ *  o  Allow user to change a object between a path and connector through
+ *     the interface.
  *  o  Create an interface for setting markers (arrow heads).
  *  o  Better distinguish between paths and connectors to prevent problems
  *     in the node tool and paths accidently being turned into connectors
  *     in the connector tool.  Perhaps have a way to convert between.
  *  o  Only call libavoid's updateEndPoint as required.  Currently we do it
  *     for both endpoints, even if only one is moving.
- *  o  Cleanup to remove unecessary borrowed DrawContext code.
  *  o  Allow user-placeable connection points.
  *  o  Deal sanely with connectors with both endpoints attached to the
  *     same connection point, and drawing of connectors attaching
@@ -41,6 +42,8 @@
  */
 
 #include <gdk/gdkkeysyms.h>
+#include <string>
+#include <cstring>
 
 #include "connector-context.h"
 #include "pixmaps/cursor-connector.xpm"
@@ -67,7 +70,9 @@
 #include "conn-avoid-ref.h"
 #include "libavoid/vertices.h"
 #include "context-fns.h"
-
+#include "sp-namedview.h"
+#include "sp-text.h"
+#include "sp-flowtext.h"
 
 
 static void sp_connector_context_class_init(SPConnectorContextClass *klass);
@@ -101,6 +106,8 @@ static void cc_clear_active_conn(SPConnectorContext *cc);
 static gchar *conn_pt_handle_test(SPConnectorContext *cc, NR::Point& w);
 static bool cc_item_is_shape(SPItem *item);
 static void cc_selection_changed(Inkscape::Selection *selection, gpointer data);
+static void cc_connector_rerouting_finish(SPConnectorContext *const cc,
+        NR::Point *const p);
 
 static void shape_event_attr_deleted(Inkscape::XML::Node *repr,
         Inkscape::XML::Node *child, Inkscape::XML::Node *ref, gpointer data);
@@ -383,19 +390,19 @@ conn_pt_handle_test(SPConnectorContext *cc, NR::Point& p)
 
 
 static gint
-sp_connector_context_item_handler(SPEventContext *ec, SPItem *item, GdkEvent *event)
+sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
 {
     gint ret = FALSE;
 
-    SPDesktop *desktop = ec->desktop;
+    SPDesktop *desktop = event_context->desktop;
 
-    SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
+    SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(event_context);
 
     NR::Point p(event->button.x, event->button.y);
 
     switch (event->type) {
         case GDK_BUTTON_RELEASE:
-            if (event->button.button == 1) {
+            if (event->button.button == 1 && !event_context->space_panning) {
                 if ((cc->state == SP_CONNECTOR_CONTEXT_DRAGGING) &&
                         (connector_within_tolerance))
                 {
@@ -484,9 +491,10 @@ connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const
     NR::Point const event_w(bevent.x, bevent.y);
     /* Find desktop coordinates */
     NR::Point p = cc->desktop->w2d(event_w);
+    SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
 
     gint ret = FALSE;
-    if ( bevent.button == 1 ) {
+    if ( bevent.button == 1 && !event_context->space_panning ) {
 
         SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
 
@@ -522,8 +530,8 @@ connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const
                     if (!cc->sid) {
                         // This is the first point, so just snap it to the grid
                         // as there's no other points to go off.
-                        SnapManager const m(cc->desktop->namedview);
-                        p = m.freeSnap(Inkscape::Snapper::SNAP_POINT | Inkscape::Snapper::BBOX_POINT,
+                        SnapManager const &m = cc->desktop->namedview->snap_manager;
+                        p = m.freeSnap(Inkscape::Snapper::SNAPPOINT_NODE,
                                        p, NULL).getPoint();
                     }
                     spcc_connector_set_initial_point(cc, p);
@@ -558,7 +566,17 @@ connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const
                 break;
         }
     } else if (bevent.button == 3) {
-        if (cc->npoints != 0) {
+        if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
+            // A context menu is going to be triggered here, 
+            // so end the rerouting operation.
+            cc_connector_rerouting_finish(cc, &p);
+                
+            cc->state = SP_CONNECTOR_CONTEXT_IDLE;
+            
+            // Don't set ret to TRUE, so we drop through to the
+            // parent handler which will open the context menu.
+        }
+        else if (cc->npoints != 0) {
             spcc_connector_finish(cc);
             ret = TRUE;
         }
@@ -571,8 +589,9 @@ static gint
 connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent)
 {
     gint ret = FALSE;
+    SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
 
-    if (mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
+    if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
         // allow middle-button scrolling
         return FALSE;
     }
@@ -650,7 +669,8 @@ static gint
 connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent)
 {
     gint ret = FALSE;
-    if ( revent.button == 1 ) {
+    SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
+    if ( revent.button == 1 && !event_context->space_panning ) {
 
         SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
         SPDocument *doc = sp_desktop_document(desktop);
@@ -683,29 +703,8 @@ connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton con
             }
             case SP_CONNECTOR_CONTEXT_REROUTING:
             {
-                // Clear the temporary path:
-                sp_curve_reset(cc->red_curve);
-                sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
-
-                // Test whether we clicked on a connection point
-                gchar *shape_label = conn_pt_handle_test(cc, p);
-
-                if (shape_label) {
-                    if (cc->clickedhandle == cc->endpt_handle[0]) {
-                        sp_object_setAttribute(cc->clickeditem,
-                                "inkscape:connection-start",shape_label, false);
-                    }
-                    else {
-                        sp_object_setAttribute(cc->clickeditem,
-                                "inkscape:connection-end",shape_label, false);
-                    }
-                    g_free(shape_label);
-                }
-                cc->clickeditem->setHidden(false);
-                sp_conn_adjust_path(SP_PATH(cc->clickeditem));
-                cc->clickeditem->updateRepr();
-                sp_document_done(doc);
-                cc_set_active_conn(cc, cc->clickeditem);
+                cc_connector_rerouting_finish(cc, &p);
+                
                 sp_document_ensure_up_to_date(doc);
                 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
                 return TRUE;
@@ -738,7 +737,21 @@ connector_handle_key_press(SPConnectorContext *const cc, guint const keyval)
             }
             break;
         case GDK_Escape:
-            if (cc->npoints != 0) {
+            if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
+                
+                SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
+                SPDocument *doc = sp_desktop_document(desktop);
+
+                cc_connector_rerouting_finish(cc, NULL);
+                
+                sp_document_undo(doc);
+                
+                cc->state = SP_CONNECTOR_CONTEXT_IDLE;
+                desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
+                        _("Connector endpoint drag cancelled."));
+                ret = TRUE;
+            }
+            else if (cc->npoints != 0) {
                 // if drawing, cancel, otherwise pass it up for deselecting
                 cc->state = SP_CONNECTOR_CONTEXT_STOP;
                 spcc_reset_colors(cc);
@@ -752,6 +765,42 @@ connector_handle_key_press(SPConnectorContext *const cc, guint const keyval)
 }
 
 
+static void
+cc_connector_rerouting_finish(SPConnectorContext *const cc, NR::Point *const p)
+{
+    SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
+    SPDocument *doc = sp_desktop_document(desktop);
+    
+    // Clear the temporary path:
+    sp_curve_reset(cc->red_curve);
+    sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
+
+    if (p != NULL)
+    {
+        // Test whether we clicked on a connection point
+        gchar *shape_label = conn_pt_handle_test(cc, *p);
+
+        if (shape_label) {
+            if (cc->clickedhandle == cc->endpt_handle[0]) {
+                sp_object_setAttribute(cc->clickeditem,
+                        "inkscape:connection-start",shape_label, false);
+            }
+            else {
+                sp_object_setAttribute(cc->clickeditem,
+                        "inkscape:connection-end",shape_label, false);
+            }
+            g_free(shape_label);
+        }
+    }
+    cc->clickeditem->setHidden(false);
+    sp_conn_adjust_path(SP_PATH(cc->clickeditem));
+    cc->clickeditem->updateRepr();
+    sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR, 
+                     _("Reroute connector"));
+    cc_set_active_conn(cc, cc->clickeditem);
+}
+
+
 static void
 spcc_reset_colors(SPConnectorContext *cc)
 {
@@ -784,8 +833,8 @@ spcc_connector_set_subsequent_point(SPConnectorContext *const cc, NR::Point cons
     SPDesktop *dt = cc->desktop;
     NR::Point o = dt->dt2doc(cc->p[0]);
     NR::Point d = dt->dt2doc(p);
-    Avoid::Point src = { o[NR::X], o[NR::Y] };
-    Avoid::Point dst = { d[NR::X], d[NR::Y] };
+    Avoid::Point src(o[NR::X], o[NR::Y]);
+    Avoid::Point dst(d[NR::X], d[NR::Y]);
 
     if (!cc->newConnRef) {
         Avoid::Router *router = sp_desktop_document(dt)->router;
@@ -864,11 +913,12 @@ spcc_flush_white(SPConnectorContext *cc, SPCurve *gc)
 
     SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
     SPDocument *doc = sp_desktop_document(desktop);
+    Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
 
     if ( c && !sp_curve_empty(c) ) {
         /* We actually have something to write */
 
-        Inkscape::XML::Node *repr = sp_repr_new("svg:path");
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
         /* Set style */
         sp_desktop_apply_style_tool(desktop, repr, "tools.connector", false);
 
@@ -911,13 +961,13 @@ spcc_flush_white(SPConnectorContext *cc, SPCurve *gc)
     sp_curve_unref(c);
 
     /* Flush pending updates */
-    sp_document_done(doc);
+    sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR, _("Create connector"));
     sp_document_ensure_up_to_date(doc);
 }
 
 
 static void
-spcc_connector_finish_segment(SPConnectorContext *const cc, NR::Point const p)
+spcc_connector_finish_segment(SPConnectorContext *const cc, NR::Point const /*p*/)
 {
     if (!sp_curve_empty(cc->red_curve)) {
         sp_curve_append_continuous(cc->green_curve, cc->red_curve, 0.0625);
@@ -955,6 +1005,8 @@ static gboolean
 cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot)
 {
     g_assert (knot != NULL);
+    
+    g_object_ref(knot);
 
     SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(
             knot->desktop->event_context);
@@ -963,11 +1015,8 @@ cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot)
 
     switch (event->type) {
         case GDK_ENTER_NOTIFY:
-            gtk_object_set (GTK_OBJECT (knot->item), "fill_color",
-                    knot->fill [SP_KNOT_STATE_MOUSEOVER], NULL);
-            gtk_object_set (GTK_OBJECT (knot->item), "stroke_color",
-                    knot->stroke [SP_KNOT_STATE_MOUSEOVER], NULL);
-
+            sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE);
+            
             cc->active_handle = knot;
 
             if (knot->tip)
@@ -975,33 +1024,32 @@ cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot)
                 knot->desktop->event_context->defaultMessageContext()->set(
                         Inkscape::NORMAL_MESSAGE, knot->tip);
             }
-
+            
             consumed = TRUE;
             break;
         case GDK_LEAVE_NOTIFY:
-            gtk_object_set (GTK_OBJECT (knot->item), "fill_color",
-                    knot->fill [SP_KNOT_STATE_NORMAL], NULL);
-            gtk_object_set (GTK_OBJECT (knot->item), "stroke_color",
-                    knot->stroke [SP_KNOT_STATE_NORMAL], NULL);
+            sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE);
 
             cc->active_handle = NULL;
-
+            
             if (knot->tip) {
                 knot->desktop->event_context->defaultMessageContext()->clear();
             }
-
+            
             consumed = TRUE;
             break;
         default:
             break;
     }
+    
+    g_object_unref(knot);
 
     return consumed;
 }
 
 
 static gboolean
-endpt_handler(SPKnot *knot, GdkEvent *event, SPConnectorContext *cc)
+endpt_handler(SPKnot */*knot*/, GdkEvent *event, SPConnectorContext *cc)
 {
     g_assert( SP_IS_CONNECTOR_CONTEXT(cc) );
 
@@ -1080,43 +1128,36 @@ static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item)
 
     // Set center connection point.
     if ( cc->connpthandle == NULL ) {
-       SPKnot * knot = (SPKnot*)g_object_new (SP_TYPE_KNOT, 0);
-
-       knot->desktop = cc->desktop;
-       knot->flags = SP_KNOT_VISIBLE;
+        SPKnot *knot = sp_knot_new(cc->desktop, 
+                _("<b>Connection point</b>: click or drag to create a new connector"));
 
-       knot->item = sp_canvas_item_new (sp_desktop_controls(cc->desktop),
-               SP_TYPE_CTRL,
-               "anchor", GTK_ANCHOR_CENTER,
-               "filled", TRUE,
-               "stroked", TRUE,
-               "mode", SP_KNOT_MODE_XOR,
-               NULL);
+        knot->setShape(SP_KNOT_SHAPE_SQUARE);
+        knot->setSize(8);
+        knot->setAnchor(GTK_ANCHOR_CENTER);
+        knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
+        sp_knot_update_ctrl(knot);
 
-       gtk_signal_connect (GTK_OBJECT (knot->item), "event",
-               GTK_SIGNAL_FUNC (cc_generic_knot_handler), knot);
+        // We don't want to use the standard knot handler,
+        //since we don't want this knot to be draggable.
+        g_signal_handler_disconnect(G_OBJECT(knot->item),
+                knot->_event_handler_id);
+        knot->_event_handler_id = 0;
 
-        knot->fill [SP_KNOT_STATE_NORMAL] = 0xffffff00;
-        knot->fill [SP_KNOT_STATE_MOUSEOVER] = 0xff0000ff;
-        knot->stroke [SP_KNOT_STATE_NORMAL] = 0x01000000;
-
-        g_object_set(G_OBJECT(knot),
-                     "shape", SP_KNOT_SHAPE_SQUARE,
-                     "size", 8,
-                     "anchor", GTK_ANCHOR_CENTER,
-                     "tip", _("<b>Connection point</b>: click or drag to create a new connector"),
-                     NULL);
+        gtk_signal_connect(GTK_OBJECT(knot->item), "event",
+                GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
 
         cc->connpthandle = knot;
     }
 
 
-    NR::Rect bbox = sp_item_bbox_desktop(cc->active_shape);
-    NR::Point center = bbox.midpoint();
-    sp_knot_set_position(cc->connpthandle, &center, 0);
-
-    sp_knot_show(cc->connpthandle);
-
+    NR::Maybe<NR::Rect> bbox = sp_item_bbox_desktop(cc->active_shape);
+    if (bbox) {
+        NR::Point center = bbox->midpoint();
+        sp_knot_set_position(cc->connpthandle, &center, 0);
+        sp_knot_show(cc->connpthandle);
+    } else {
+        sp_knot_hide(cc->connpthandle);
+    }
 }
 
 
@@ -1160,32 +1201,24 @@ cc_set_active_conn(SPConnectorContext *cc, SPItem *item)
 
         // Create the handle if it doesn't exist
         if ( cc->endpt_handle[i] == NULL ) {
-            SPKnot * knot = (SPKnot*) g_object_new (SP_TYPE_KNOT, 0);
+            SPKnot *knot = sp_knot_new(cc->desktop, 
+                    _("<b>Connector endpoint</b>: drag to reroute or connect to new shapes"));
 
-            knot->desktop = cc->desktop;
-            knot->flags = SP_KNOT_VISIBLE;
+            knot->setShape(SP_KNOT_SHAPE_SQUARE);
+            knot->setSize(7);
+            knot->setAnchor(GTK_ANCHOR_CENTER);
+            knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
+            knot->setStroke(0x000000ff, 0x000000ff, 0x000000ff);
+            sp_knot_update_ctrl(knot);
 
-            knot->item = sp_canvas_item_new (sp_desktop_controls (cc->desktop),
-                    SP_TYPE_CTRL,
-                    "anchor", GTK_ANCHOR_CENTER,
-                    "filled", TRUE,
-                    "stroked", TRUE,
-                    "mode", SP_KNOT_MODE_XOR,
-                    NULL);
+            // We don't want to use the standard knot handler,
+            //since we don't want this knot to be draggable.
+            g_signal_handler_disconnect(G_OBJECT(knot->item),
+                    knot->_event_handler_id);
+            knot->_event_handler_id = 0;
 
-            knot->fill [SP_KNOT_STATE_NORMAL] = 0xffffff00;
-            knot->stroke [SP_KNOT_STATE_NORMAL] = 0x000000ff;
-            knot->stroke [SP_KNOT_STATE_DRAGGING] = 0x000000ff;
-            knot->stroke [SP_KNOT_STATE_MOUSEOVER] = 0x000000ff;
-
-            g_object_set(G_OBJECT(knot),
-                    "shape", SP_KNOT_SHAPE_DIAMOND,
-                    "size", 10,
-                    "tip", _("<b>Connector endpoint</b>: drag to reroute or connect to new shapes"),
-                    NULL);
-
-            gtk_signal_connect (GTK_OBJECT (knot->item), "event",
-                    GTK_SIGNAL_FUNC (cc_generic_knot_handler), knot);
+            gtk_signal_connect(GTK_OBJECT(knot->item), "event",
+                    GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
 
             cc->endpt_handle[i] = knot;
         }
@@ -1226,6 +1259,12 @@ static bool cc_item_is_shape(SPItem *item)
             return false;
         }
     }
+    else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+        if (prefs_get_int_attribute("tools.connector", "ignoretext", 1) == 1) {
+            // Don't count text as a shape we can connect connector to.
+            return false;
+        }
+    }
     return true;
 }
 
@@ -1278,7 +1317,10 @@ void cc_selection_set_avoid(bool const set_avoid)
         return;
     }
 
-    sp_document_done(document);
+    char *event_desc = (set_avoid) ?
+            _("Make connectors avoid selected objects") :
+            _("Make connectors ignore selected objects");
+    sp_document_done(document, SP_VERB_CONTEXT_CONNECTOR, event_desc);
 }
 
 
@@ -1308,8 +1350,8 @@ cc_selection_changed(Inkscape::Selection *selection, gpointer data)
 
 
 static void
-shape_event_attr_deleted(Inkscape::XML::Node *repr, Inkscape::XML::Node *child,
-        Inkscape::XML::Node *ref, gpointer data)
+shape_event_attr_deleted(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node *child,
+                         Inkscape::XML::Node */*ref*/, gpointer data)
 {
     g_assert(data);
     SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
@@ -1323,8 +1365,8 @@ shape_event_attr_deleted(Inkscape::XML::Node *repr, Inkscape::XML::Node *child,
 
 static void
 shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
-                            gchar const *old_value, gchar const *new_value,
-                            bool is_interactive, gpointer data)
+                         gchar const */*old_value*/, gchar const */*new_value*/,
+                         bool /*is_interactive*/, gpointer data)
 {
     g_assert(data);
     SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);