Code

Fix change in revision 9947 to be consistent with rest of the codebase.
[inkscape.git] / src / rect-context.cpp
index c8f9bf0f101d0b1e2cc9e3b50a79bf49b5f3dc13..bcb1bf7347e615586a761896448014d229fcdf6d 100644 (file)
@@ -1,11 +1,11 @@
-#define __SP_RECT_CONTEXT_C__
-
 /*
  * Rectangle drawing context
  *
  * Author:
  *   Lauris Kaplinski <lauris@kaplinski.com>
  *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
  *
  * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
  * Copyright (C) 2000-2005 authors
@@ -17,6 +17,8 @@
 #include "config.h"
 
 #include <gdk/gdkkeysyms.h>
+#include <cstring>
+#include <string>
 
 #include "macros.h"
 #include "display/sp-canvas.h"
@@ -24,6 +26,7 @@
 #include "document.h"
 #include "sp-namedview.h"
 #include "selection.h"
+#include "selection-chemistry.h"
 #include "desktop-handles.h"
 #include "snap.h"
 #include "desktop.h"
 #include "object-edit.h"
 #include "xml/repr.h"
 #include "xml/node-event-vector.h"
-#include "prefs-utils.h"
+#include "preferences.h"
 #include "context-fns.h"
+#include "shape-editor.h"
+
+using Inkscape::DocumentUndo;
+
+//static const double goldenratio = 1.61803398874989484820; // golden ratio
 
 static void sp_rect_context_class_init(SPRectContextClass *klass);
 static void sp_rect_context_init(SPRectContext *rect_context);
 static void sp_rect_context_dispose(GObject *object);
 
 static void sp_rect_context_setup(SPEventContext *ec);
-static void sp_rect_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
+static void sp_rect_context_finish(SPEventContext *ec);
+static void sp_rect_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
 
 static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent *event);
 static gint sp_rect_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
 
-static void sp_rect_drag(SPRectContext &rc, NR::Point const pt, guint state);
+static void sp_rect_drag(SPRectContext &rc, Geom::Point const pt, guint state);
 static void sp_rect_finish(SPRectContext *rc);
+static void sp_rect_cancel(SPRectContext *rc);
 
 static SPEventContextClass *parent_class;
 
@@ -84,6 +94,7 @@ static void sp_rect_context_class_init(SPRectContextClass *klass)
     object_class->dispose = sp_rect_context_dispose;
 
     event_context_class->setup = sp_rect_context_setup;
+    event_context_class->finish = sp_rect_context_finish;
     event_context_class->set = sp_rect_context_set;
     event_context_class->root_handler  = sp_rect_context_root_handler;
     event_context_class->item_handler  = sp_rect_context_item_handler;
@@ -101,9 +112,7 @@ static void sp_rect_context_init(SPRectContext *rect_context)
     event_context->tolerance = 0;
     event_context->within_tolerance = false;
     event_context->item_to_select = NULL;
-
-    event_context->shape_repr = NULL;
-    event_context->shape_knot_holder = NULL;
+    event_context->tool_url = "/tools/shapes/rect";
 
     rect_context->item = NULL;
 
@@ -113,6 +122,21 @@ static void sp_rect_context_init(SPRectContext *rect_context)
     new (&rect_context->sel_changed_connection) sigc::connection();
 }
 
+static void sp_rect_context_finish(SPEventContext *ec)
+{
+    SPRectContext *rc = SP_RECT_CONTEXT(ec);
+    SPDesktop *desktop = ec->desktop;
+
+    sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), GDK_CURRENT_TIME);
+    sp_rect_finish(rc);
+    rc->sel_changed_connection.disconnect();
+
+    if (((SPEventContextClass *) parent_class)->finish) {
+        ((SPEventContextClass *) parent_class)->finish(ec);
+    }
+}
+
+
 static void sp_rect_context_dispose(GObject *object)
 {
     SPRectContext *rc = SP_RECT_CONTEXT(object);
@@ -123,22 +147,14 @@ static void sp_rect_context_dispose(GObject *object)
     rc->sel_changed_connection.disconnect();
     rc->sel_changed_connection.~connection();
 
+    delete ec->shape_editor;
+    ec->shape_editor = NULL;
+
     /* fixme: This is necessary because we do not grab */
     if (rc->item) {
         sp_rect_finish(rc);
     }
 
-    if (ec->shape_knot_holder) {
-        sp_knot_holder_destroy(ec->shape_knot_holder);
-        ec->shape_knot_holder = NULL;
-    }
-
-    if (ec->shape_repr) { // remove old listener
-        sp_repr_remove_listener_by_data(ec->shape_repr, ec);
-        Inkscape::GC::release(ec->shape_repr);
-        ec->shape_repr = 0;
-    }
-
     if (rc->_message_context) {
         delete rc->_message_context;
     }
@@ -146,14 +162,6 @@ static void sp_rect_context_dispose(GObject *object)
     G_OBJECT_CLASS(parent_class)->dispose(object);
 }
 
-static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
-    NULL, /* child_added */
-    NULL, /* child_removed */
-    ec_shape_event_attr_changed,
-    NULL, /* content_changed */
-    NULL  /* order_changed */
-};
-
 /**
 \brief  Callback that processes the "changed" signal on the selection;
 destroys old and creates new knotholder
@@ -163,27 +171,9 @@ void sp_rect_context_selection_changed(Inkscape::Selection *selection, gpointer
     SPRectContext *rc = SP_RECT_CONTEXT(data);
     SPEventContext *ec = SP_EVENT_CONTEXT(rc);
 
-    if (ec->shape_knot_holder) { // destroy knotholder
-        sp_knot_holder_destroy(ec->shape_knot_holder);
-        ec->shape_knot_holder = NULL;
-    }
-
-    if (ec->shape_repr) { // remove old listener
-        sp_repr_remove_listener_by_data(ec->shape_repr, ec);
-        Inkscape::GC::release(ec->shape_repr);
-        ec->shape_repr = 0;
-    }
-
+    ec->shape_editor->unset_item(SH_KNOTHOLDER);
     SPItem *item = selection->singleItem();
-    if (item) {
-        ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
-        Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
-        if (shape_repr) {
-            ec->shape_repr = shape_repr;
-            Inkscape::GC::anchor(shape_repr);
-            sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
-        }
-    }
+    ec->shape_editor->set_item(item, SH_KNOTHOLDER);
 }
 
 static void sp_rect_context_setup(SPEventContext *ec)
@@ -194,15 +184,11 @@ static void sp_rect_context_setup(SPEventContext *ec)
         ((SPEventContextClass *) parent_class)->setup(ec);
     }
 
+    ec->shape_editor = new ShapeEditor(ec->desktop);
+
     SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
     if (item) {
-        ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
-        Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(item);
-        if (shape_repr) {
-            ec->shape_repr = shape_repr;
-            Inkscape::GC::anchor(shape_repr);
-            sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
-        }
+        ec->shape_editor->set_item(item, SH_KNOTHOLDER);
     }
 
     rc->sel_changed_connection.disconnect();
@@ -213,31 +199,29 @@ static void sp_rect_context_setup(SPEventContext *ec)
     sp_event_context_read(ec, "rx");
     sp_event_context_read(ec, "ry");
 
-    if (prefs_get_int_attribute("tools.shapes", "selcue", 0) != 0) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/shapes/selcue")) {
         ec->enableSelectionCue();
     }
 
-    if (prefs_get_int_attribute("tools.shapes", "gradientdrag", 0) != 0) {
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
         ec->enableGrDrag();
     }
 
     rc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 }
 
-static void sp_rect_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
+static void sp_rect_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
 {
     SPRectContext *rc = SP_RECT_CONTEXT(ec);
 
     /* fixme: Proper error handling for non-numeric data.  Use a locale-independent function like
      * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */
-    if ( strcmp(key, "rx") == 0 ) {
-        rc->rx = ( val
-                         ? g_ascii_strtod (val, NULL)
-                         : 0.0 );
-    } else if ( strcmp(key, "ry") == 0 ) {
-        rc->ry = ( val
-                         ? g_ascii_strtod (val, NULL)
-                         : 0.0 );
+    Glib::ustring name = val->getEntryName();
+    if ( name == "rx" ) {
+        rc->rx = val->getDoubleLimited(); // prevents NaN and +/-Inf from messing up
+    } else if ( name == "ry" ) {
+        rc->ry = val->getDoubleLimited();
     }
 }
 
@@ -249,7 +233,7 @@ static gint sp_rect_context_item_handler(SPEventContext *event_context, SPItem *
 
     switch (event->type) {
     case GDK_BUTTON_PRESS:
-        if ( event->button.button == 1 ) {
+        if ( event->button.button == 1 && !event_context->space_panning) {
             Inkscape::setup_for_drag_start(desktop, event_context, event);
             ret = TRUE;
         }
@@ -274,19 +258,20 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
     Inkscape::Selection *selection = sp_desktop_selection (desktop);
 
     SPRectContext *rc = SP_RECT_CONTEXT(event_context);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 
-    event_context->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
+    event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
 
     gint ret = FALSE;
     switch (event->type) {
     case GDK_BUTTON_PRESS:
-        if ( event->button.button == 1 ) {
-            NR::Point const button_w(event->button.x,
+        if (event->button.button == 1 && !event_context->space_panning) {
+            Geom::Point const button_w(event->button.x,
                                      event->button.y);
 
             // save drag origin
-            event_context->xp = (gint) button_w[NR::X];
-            event_context->yp = (gint) button_w[NR::Y];
+            event_context->xp = (gint) button_w[Geom::X];
+            event_context->yp = (gint) button_w[Geom::Y];
             event_context->within_tolerance = true;
 
             // remember clicked item, disregarding groups, honoring Alt
@@ -295,25 +280,30 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
             dragging = true;
 
             /* Position center */
-            NR::Point const button_dt(desktop->w2d(button_w));
+            Geom::Point button_dt(desktop->w2d(button_w));
+            rc->center = from_2geom(button_dt);
 
             /* Snap center */
-            SnapManager const &m = desktop->namedview->snap_manager;
-            rc->center = m.freeSnap(Inkscape::Snapper::SNAP_POINT | Inkscape::Snapper::BBOX_POINT,
-                                    button_dt, rc->item).getPoint();
+            SnapManager &m = desktop->namedview->snap_manager;
+            m.setup(desktop);
+            m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            m.unSetup();
+            rc->center = from_2geom(button_dt);
 
             sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
                                 ( GDK_KEY_PRESS_MASK |
                                   GDK_BUTTON_RELEASE_MASK       |
                                   GDK_POINTER_MOTION_MASK       |
+                                  GDK_POINTER_MOTION_HINT_MASK       |
                                   GDK_BUTTON_PRESS_MASK ),
                                 NULL, event->button.time);
+
             ret = TRUE;
         }
         break;
     case GDK_MOTION_NOTIFY:
         if ( dragging
-             && ( event->motion.state & GDK_BUTTON1_MASK ) )
+             && (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 )
@@ -325,22 +315,28 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
             // motion notify coordinates as given (no snapping back to origin)
             event_context->within_tolerance = false;
 
-            NR::Point const motion_w(event->motion.x,
-                                     event->motion.y);
-            NR::Point motion_dt(desktop->w2d(motion_w));
-            
-            SnapManager const &m = desktop->namedview->snap_manager;
-            motion_dt = m.freeSnap(Inkscape::Snapper::BBOX_POINT | Inkscape::Snapper::SNAP_POINT, motion_dt, rc->item).getPoint();
-            
-            sp_rect_drag(*rc, motion_dt, event->motion.state);
-            
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(desktop->w2d(motion_w));
+
+            sp_rect_drag(*rc, motion_dt, event->motion.state); // this will also handle the snapping
+            gobble_motion_events(GDK_BUTTON1_MASK);
             ret = TRUE;
+        } else if (!sp_event_context_knot_mouseover(rc)) {
+            SnapManager &m = desktop->namedview->snap_manager;
+            m.setup(desktop);
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(desktop->w2d(motion_w));
+
+            m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+            m.unSetup();
         }
         break;
     case GDK_BUTTON_RELEASE:
         event_context->xp = event_context->yp = 0;
-        if ( event->button.button == 1 ) {
+        if (event->button.button == 1 && !event_context->space_panning) {
             dragging = false;
+            sp_event_context_discard_delayed_snap_event(event_context);
 
             if (!event_context->within_tolerance) {
                 // we've been dragging, finish the rect
@@ -397,9 +393,22 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
             }
             break;
 
+        case GDK_g:
+        case GDK_G:
+            if (MOD__SHIFT_ONLY) {
+                sp_selection_to_guides(desktop);
+                ret = true;
+            }
+            break;
+
         case GDK_Escape:
-            sp_desktop_selection(desktop)->clear();
-            //TODO: make dragging escapable by Esc
+            if (dragging) {
+                dragging = false;
+                sp_event_context_discard_delayed_snap_event(event_context);
+                // if drawing, cancel, otherwise pass it up for deselecting
+                sp_rect_cancel(rc);
+                ret = TRUE;
+            }
             break;
 
         case GDK_space:
@@ -407,6 +416,7 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
                 sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate),
                                       event->button.time);
                 dragging = false;
+                sp_event_context_discard_delayed_snap_event(event_context);
                 if (!event_context->within_tolerance) {
                     // we've been dragging, finish the rect
                     sp_rect_finish(rc);
@@ -448,7 +458,7 @@ static gint sp_rect_context_root_handler(SPEventContext *event_context, GdkEvent
     return ret;
 }
 
-static void sp_rect_drag(SPRectContext &rc, NR::Point const pt, guint state)
+static void sp_rect_drag(SPRectContext &rc, Geom::Point const pt, guint state)
 {
     SPDesktop *desktop = SP_EVENT_CONTEXT(&rc)->desktop;
 
@@ -458,38 +468,67 @@ static void sp_rect_drag(SPRectContext &rc, NR::Point const pt, guint state)
             return;
         }
 
-        /* Create object */
-        Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(&rc));
+        // Create object
+        Inkscape::XML::Document *xml_doc = SP_EVENT_CONTEXT_DOCUMENT(&rc)->getReprDoc();
         Inkscape::XML::Node *repr = xml_doc->createElement("svg:rect");
 
-        /* Set style */
-        sp_desktop_apply_style_tool (desktop, repr, "tools.shapes.rect", false);
+        // Set style
+        sp_desktop_apply_style_tool (desktop, repr, "/tools/shapes/rect", false);
 
         rc.item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr);
         Inkscape::GC::release(repr);
-        rc.item->transform = SP_ITEM(desktop->currentRoot())->getRelativeTransform(desktop->currentLayer());
+        rc.item->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
         rc.item->updateRepr();
 
         sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
     }
 
-    NR::Rect const r = Inkscape::snap_rectangular_box(desktop, rc.item, pt, rc.center, state);
+    Geom::Rect const r = Inkscape::snap_rectangular_box(desktop, rc.item, pt, rc.center, state);
 
-    sp_rect_position_set(SP_RECT(rc.item), r.min()[NR::X], r.min()[NR::Y], r.dimensions()[NR::X], r.dimensions()[NR::Y]);
+    sp_rect_position_set(SP_RECT(rc.item), r.min()[Geom::X], r.min()[Geom::Y], r.dimensions()[Geom::X], r.dimensions()[Geom::Y]);
     if ( rc.rx != 0.0 ) {
         sp_rect_set_rx (SP_RECT(rc.item), TRUE, rc.rx);
     }
     if ( rc.ry != 0.0 ) {
         if (rc.rx == 0.0)
-            sp_rect_set_ry (SP_RECT(rc.item), TRUE, CLAMP(rc.ry, 0, MIN(r.dimensions()[NR::X], r.dimensions()[NR::Y])/2));
+            sp_rect_set_ry (SP_RECT(rc.item), TRUE, CLAMP(rc.ry, 0, MIN(r.dimensions()[Geom::X], r.dimensions()[Geom::Y])/2));
         else
-            sp_rect_set_ry (SP_RECT(rc.item), TRUE, CLAMP(rc.ry, 0, r.dimensions()[NR::Y]));
+            sp_rect_set_ry (SP_RECT(rc.item), TRUE, CLAMP(rc.ry, 0, r.dimensions()[Geom::Y]));
     }
 
     // status text
-    GString *xs = SP_PX_TO_METRIC_STRING(r.dimensions()[NR::X], desktop->namedview->getDefaultMetric());
-    GString *ys = SP_PX_TO_METRIC_STRING(r.dimensions()[NR::Y], desktop->namedview->getDefaultMetric());
-    rc._message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>Rectangle</b>: %s &#215; %s; with <b>Ctrl</b> to make square or integer-ratio rectangle; with <b>Shift</b> to draw around the starting point"), xs->str, ys->str);
+    double rdimx = r.dimensions()[Geom::X];
+    double rdimy = r.dimensions()[Geom::Y];
+    GString *xs = SP_PX_TO_METRIC_STRING(rdimx, desktop->namedview->getDefaultMetric());
+    GString *ys = SP_PX_TO_METRIC_STRING(rdimy, desktop->namedview->getDefaultMetric());
+    if (state & GDK_CONTROL_MASK) {
+        int ratio_x, ratio_y;
+        bool is_golden_ratio = false;
+        if (fabs (rdimx) > fabs (rdimy)) {
+            if (fabs(rdimx / rdimy - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+            ratio_x = (int) rint (rdimx / rdimy);
+            ratio_y = 1;
+        } else {
+            if (fabs(rdimy / rdimx - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+            ratio_x = 1;
+            ratio_y = (int) rint (rdimy / rdimx);
+        }
+        if (!is_golden_ratio) {
+            rc._message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Rectangle</b>: %s &#215; %s (constrained to ratio %d:%d); with <b>Shift</b> to draw around the starting point"), xs->str, ys->str, ratio_x, ratio_y);
+        } else {
+            if (ratio_y == 1) {
+                rc._message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Rectangle</b>: %s &#215; %s (constrained to golden ratio 1.618 : 1); with <b>Shift</b> to draw around the starting point"), xs->str, ys->str);
+            } else {
+                rc._message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Rectangle</b>: %s &#215; %s (constrained to golden ratio 1 : 1.618); with <b>Shift</b> to draw around the starting point"), xs->str, ys->str);
+            }
+        }
+    } else {
+        rc._message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Rectangle</b>: %s &#215; %s; with <b>Ctrl</b> to make square or integer-ratio rectangle; with <b>Shift</b> to draw around the starting point"), xs->str, ys->str);
+    }
     g_string_free(xs, FALSE);
     g_string_free(ys, FALSE);
 }
@@ -499,22 +538,49 @@ static void sp_rect_finish(SPRectContext *rc)
     rc->_message_context->clear();
 
     if ( rc->item != NULL ) {
-        SPDesktop * desktop;
+        SPRect *rect = SP_RECT(rc->item);
+        if (rect->width.computed == 0 || rect->height.computed == 0) {
+            sp_rect_cancel(rc); // Don't allow the creating of zero sized rectangle, for example when the start and and point snap to the snap grid point
+            return;
+        }
 
-        desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
+        SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(rc);
 
         SP_OBJECT(rc->item)->updateRepr();
 
         sp_canvas_end_forced_full_redraws(desktop->canvas);
 
         sp_desktop_selection(desktop)->set(rc->item);
-        sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_RECT,
-                         _("Create rectangle"));
+        DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_CONTEXT_RECT,
+                           _("Create rectangle"));
+
+        rc->item = NULL;
+    }
+}
 
+static void sp_rect_cancel(SPRectContext *rc)
+{
+    SPDesktop *desktop = SP_EVENT_CONTEXT(rc)->desktop;
+
+    sp_desktop_selection(desktop)->clear();
+    sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), 0);
+
+    if (rc->item != NULL) {
+        SP_OBJECT(rc->item)->deleteObject();
         rc->item = NULL;
     }
+
+    rc->within_tolerance = false;
+    rc->xp = 0;
+    rc->yp = 0;
+    rc->item_to_select = NULL;
+
+    sp_canvas_end_forced_full_redraws(desktop->canvas);
+
+    DocumentUndo::cancel(sp_desktop_document(desktop));
 }
 
+
 /*
   Local Variables:
   mode:c++
@@ -524,4 +590,4 @@ static void sp_rect_finish(SPRectContext *rc)
   fill-column:99
   End:
 */
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :