Code

Connector tool: make connectors avoid the convex hull of shapes.
[inkscape.git] / src / knot.cpp
index 3194336edaea6d6e4157485882634cab9107d548..b17e41b243bf9b640365be12de1f755cd5f9b7f4 100644 (file)
 #include "desktop-handles.h"
 #include "knot.h"
 #include "document.h"
-#include "prefs-utils.h"
+#include "preferences.h"
 #include "message-stack.h"
 #include "message-context.h"
 #include "event-context.h"
 
-
 #define KNOT_EVENT_MASK (GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | \
-                        GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | \
+                        GDK_POINTER_MOTION_MASK | \
+                        GDK_POINTER_MOTION_HINT_MASK | \
                         GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK)
 
 static bool nograb = false;
@@ -62,7 +62,6 @@ static void sp_knot_init(SPKnot *knot);
 static void sp_knot_dispose(GObject *object);
 
 static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot);
-static void sp_knot_set_flag(SPKnot *knot, guint flag, bool set);
 static void sp_knot_set_ctrl_state(SPKnot *knot);
 
 static GObjectClass *parent_class;
@@ -97,7 +96,7 @@ GType sp_knot_get_type()
  */
 static void sp_knot_class_init(SPKnotClass *klass)
 {
-    GObjectClass *object_class = klass;
+    GObjectClass *object_class = (GObjectClass*)klass;
 
     parent_class = (GObjectClass*) g_type_class_peek_parent(klass);
 
@@ -189,13 +188,14 @@ static void sp_knot_init(SPKnot *knot)
     knot->flags = 0;
 
     knot->size = 8;
-    knot->pos = NR::Point(0, 0);
-    knot->grabbed_rel_pos = NR::Point(0, 0);
+    knot->pos = Geom::Point(0, 0);
+    knot->grabbed_rel_pos = Geom::Point(0, 0);
     knot->anchor = GTK_ANCHOR_CENTER;
     knot->shape = SP_KNOT_SHAPE_SQUARE;
     knot->mode = SP_KNOT_MODE_XOR;
     knot->tip = NULL;
     knot->_event_handler_id = 0;
+    knot->pressure = 0;
 
     knot->fill[SP_KNOT_STATE_NORMAL] = 0xffffff00;
     knot->fill[SP_KNOT_STATE_MOUSEOVER] = 0xff0000ff;
@@ -260,7 +260,7 @@ static void sp_knot_dispose(GObject *object)
 /**
  * Update knot for dragging and tell canvas an item was grabbed.
  */
-void sp_knot_start_dragging(SPKnot *knot, NR::Point p, gint x, gint y, guint32 etime)
+void sp_knot_start_dragging(SPKnot *knot, Geom::Point const &p, gint x, gint y, guint32 etime)
 {
     // save drag origin
     xp = x;
@@ -282,24 +282,25 @@ void sp_knot_start_dragging(SPKnot *knot, NR::Point p, gint x, gint y, guint32 e
 /**
  * Called to handle events on knots.
  */
-static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
+static int sp_knot_handler(SPCanvasItem */*item*/, GdkEvent *event, SPKnot *knot)
 {
-    g_assert(knot != NULL);
+       g_assert(knot != NULL);
     g_assert(SP_IS_KNOT(knot));
 
-    g_object_ref(knot);
-    tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
+    /* Run client universal event handler, if present */
 
     gboolean consumed = FALSE;
 
-    /* Run client universal event handler, if present */
-
     g_signal_emit(knot, knot_signals[EVENT], 0, event, &consumed);
 
     if (consumed) {
         return TRUE;
     }
 
+    g_object_ref(knot);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
     switch (event->type) {
        case GDK_2BUTTON_PRESS:
             if (event->button.button == 1) {
@@ -311,14 +312,22 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
             }
             break;
        case GDK_BUTTON_PRESS:
-            if (event->button.button == 1) {
-                NR::Point const p = knot->desktop->w2d(NR::Point(event->button.x, event->button.y));
+            if (event->button.button == 1 && !knot->desktop->event_context->space_panning) {
+                Geom::Point const p = knot->desktop->w2d(Geom::Point(event->button.x, event->button.y));
                 sp_knot_start_dragging(knot, p, (gint) event->button.x, (gint) event->button.y, event->button.time);
-                consumed = TRUE;
+                               consumed = TRUE;
             }
             break;
        case GDK_BUTTON_RELEASE:
-            if (event->button.button == 1) {
+                       if (event->button.button == 1 && !knot->desktop->event_context->space_panning) {
+                               // If we have any pending snap event, then invoke it now
+                               if (knot->desktop->event_context->_delayed_snap_event) {
+                                       sp_event_context_snap_watchdog_callback(knot->desktop->event_context->_delayed_snap_event);
+                               }
+
+                               sp_event_context_discard_delayed_snap_event(knot->desktop->event_context);
+
+               knot->pressure = 0;
                 if (transform_escaped) {
                     transform_escaped = false;
                     consumed = TRUE;
@@ -334,10 +343,12 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
                         g_signal_emit(knot,
                                       knot_signals[UNGRABBED], 0,
                                       event->button.state);
+                        knot->_ungrabbed_signal.emit(knot);
                     } else {
                         g_signal_emit(knot,
                                       knot_signals[CLICKED], 0,
                                       event->button.state);
+                        knot->_click_signal.emit(knot, event->button.state);
                     }
                     grabbed = FALSE;
                     moved = FALSE;
@@ -346,7 +357,7 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
             }
             break;
        case GDK_MOTION_NOTIFY:
-            if (grabbed) {
+            if (grabbed && !knot->desktop->event_context->space_panning) {
                 consumed = TRUE;
 
                 if ( within_tolerance
@@ -360,6 +371,11 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
                 // motion notify coordinates as given (no snapping back to origin)
                 within_tolerance = false;
 
+                if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &knot->pressure))
+                    knot->pressure = CLAMP (knot->pressure, 0, 1);
+                else
+                    knot->pressure = 0.5;
+
                 if (!moved) {
                     g_signal_emit(knot,
                                   knot_signals[GRABBED], 0,
@@ -368,11 +384,8 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
                                      SP_KNOT_DRAGGING,
                                      TRUE);
                 }
-                NR::Point const motion_w(event->motion.x, event->motion.y);
-                NR::Point const motion_dt = knot->desktop->w2d(motion_w);
-                NR::Point p = motion_dt - knot->grabbed_rel_pos;
-                sp_knot_request_position (knot, &p, event->motion.state);
-                knot->desktop->scroll_to_point (&motion_dt);
+                sp_event_context_snap_delay_handler(knot->desktop->event_context, NULL, knot, (GdkEventMotion *)event, DelayedSnapEvent::KNOT_HANDLER);
+                sp_knot_handler_request_position(event, knot);
                 moved = TRUE;
             }
             break;
@@ -398,36 +411,36 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
 
             grabbed = FALSE;
             moved = FALSE;
-
             consumed = TRUE;
             break;
        case GDK_KEY_PRESS: // keybindings for knot
             switch (get_group0_keyval(&event->key)) {
-               case GDK_Escape:
-                    sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
-                    if (!nograb) {
-                        sp_canvas_item_ungrab(knot->item, event->button.time);
-                    }
-                    if (moved) {
-                        sp_knot_set_flag(knot,
-                                         SP_KNOT_DRAGGING,
-                                         FALSE);
-                        g_signal_emit(knot,
-                                      knot_signals[UNGRABBED], 0,
-                                      event->button.state);
-                        sp_document_undo(SP_DT_DOCUMENT(knot->desktop));
-                        knot->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Node or handle drag canceled."));
-                        transform_escaped = true;
-                        consumed = TRUE;
-                    }
-                    grabbed = FALSE;
-                    moved = FALSE;
-                    break;
-               default:
-                    consumed = FALSE;
-                    break;
-            }
-            break;
+                               case GDK_Escape:
+                                                       sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
+                                                       if (!nograb) {
+                                                               sp_canvas_item_ungrab(knot->item, event->button.time);
+                                                       }
+                                                       if (moved) {
+                                                               sp_knot_set_flag(knot,
+                                                                                                SP_KNOT_DRAGGING,
+                                                                                                FALSE);
+                                                               g_signal_emit(knot,
+                                                                                         knot_signals[UNGRABBED], 0,
+                                                                                         event->button.state);
+                                                               sp_document_undo(sp_desktop_document(knot->desktop));
+                                                               knot->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Node or handle drag canceled."));
+                                                               transform_escaped = true;
+                                                               consumed = TRUE;
+                                                       }
+                                                       grabbed = FALSE;
+                                                       moved = FALSE;
+                                                       sp_event_context_discard_delayed_snap_event(knot->desktop->event_context);
+                                                       break;
+                               default:
+                                                       consumed = FALSE;
+                                                       break;
+                                       }
+                                       break;
        default:
             break;
     }
@@ -437,6 +450,18 @@ static int sp_knot_handler(SPCanvasItem *item, GdkEvent *event, SPKnot *knot)
     return consumed;
 }
 
+void sp_knot_handler_request_position(GdkEvent *event, SPKnot *knot)
+{
+       Geom::Point const motion_w(event->motion.x, event->motion.y);
+       Geom::Point const motion_dt = knot->desktop->w2d(motion_w);
+       Geom::Point p = motion_dt - knot->grabbed_rel_pos;
+       sp_knot_request_position (knot, p, event->motion.state);
+       knot->desktop->scroll_to_point (motion_dt);
+       knot->desktop->set_coordinate_status(knot->pos); // display the coordinate of knot, not cursor - they may be different!
+       if (event->motion.state & GDK_BUTTON1_MASK)
+               gobble_motion_events(GDK_BUTTON1_MASK);
+}
+
 /**
  * Return new knot object.
  */
@@ -452,7 +477,7 @@ SPKnot *sp_knot_new(SPDesktop *desktop, const gchar *tip)
         knot->tip = g_strdup (tip);
     }
 
-    knot->item = sp_canvas_item_new(SP_DT_CONTROLS (desktop),
+    knot->item = sp_canvas_item_new(sp_desktop_controls (desktop),
                                     SP_TYPE_CTRL,
                                     "anchor", GTK_ANCHOR_CENTER,
                                     "size", 8.0,
@@ -494,7 +519,7 @@ void sp_knot_hide(SPKnot *knot)
 /**
  * Request or set new position for knot.
  */
-void sp_knot_request_position(SPKnot *knot, NR::Point *p, guint state)
+void sp_knot_request_position(SPKnot *knot, Geom::Point const &p, guint state)
 {
     g_return_if_fail(knot != NULL);
     g_return_if_fail(SP_IS_KNOT(knot));
@@ -503,7 +528,7 @@ void sp_knot_request_position(SPKnot *knot, NR::Point *p, guint state)
 
     g_signal_emit(knot,
                   knot_signals[REQUEST], 0,
-                  p,
+                  &p,
                   state,
                   &done);
 
@@ -517,16 +542,16 @@ void sp_knot_request_position(SPKnot *knot, NR::Point *p, guint state)
 /**
  * Return distance of point to knot's position; unused.
  */
-gdouble sp_knot_distance(SPKnot * knot, NR::Point *p, guint state)
+gdouble sp_knot_distance(SPKnot * knot, Geom::Point const &p, guint state)
 {
     g_return_val_if_fail(knot != NULL, 1e18);
     g_return_val_if_fail(SP_IS_KNOT(knot), 1e18);
 
-    gdouble distance = NR::L2(*p - knot->pos);
+    gdouble distance = Geom::L2(p - knot->pos);
 
     g_signal_emit(knot,
                   knot_signals[DISTANCE], 0,
-                  p,
+                  &p,
                   state,
                   &distance);
 
@@ -536,42 +561,43 @@ gdouble sp_knot_distance(SPKnot * knot, NR::Point *p, guint state)
 /**
  * Move knot to new position.
  */
-void sp_knot_set_position(SPKnot *knot, NR::Point *p, guint state)
+void sp_knot_set_position(SPKnot *knot, Geom::Point const &p, guint state)
 {
     g_return_if_fail(knot != NULL);
     g_return_if_fail(SP_IS_KNOT (knot));
 
-    knot->pos = *p;
+    knot->pos = p;
 
     if (knot->item) {
-        SP_CTRL(knot->item)->moveto (*p);
+        SP_CTRL(knot->item)->moveto (p);
     }
 
     g_signal_emit(knot,
                   knot_signals[MOVED], 0,
-                  p,
+                  &p,
                   state);
+    knot->_moved_signal.emit(knot, p, state);
 }
 
 /**
- * Move knot to new position, without emitting a MOVED signal. 
+ * Move knot to new position, without emitting a MOVED signal.
  */
-void sp_knot_moveto(SPKnot *knot, NR::Point *p)
+void sp_knot_moveto(SPKnot *knot, Geom::Point const &p)
 {
     g_return_if_fail(knot != NULL);
     g_return_if_fail(SP_IS_KNOT(knot));
 
-    knot->pos = *p;
+    knot->pos = p;
 
     if (knot->item) {
-        SP_CTRL(knot->item)->moveto (*p);
+        SP_CTRL(knot->item)->moveto (p);
     }
 }
 
 /**
  * Returns position of knot.
  */
-NR::Point sp_knot_position(SPKnot const *knot)
+Geom::Point sp_knot_position(SPKnot const *knot)
 {
     g_assert(knot != NULL);
     g_assert(SP_IS_KNOT (knot));
@@ -582,7 +608,7 @@ NR::Point sp_knot_position(SPKnot const *knot)
 /**
  * Set flag in knot, with side effects.
  */
-static void sp_knot_set_flag(SPKnot *knot, guint flag, bool set)
+void sp_knot_set_flag(SPKnot *knot, guint flag, bool set)
 {
     g_assert(knot != NULL);
     g_assert(SP_IS_KNOT(knot));