Code

Workaround for some segfaults: Store perspectives globally instead of in each desktop...
[inkscape.git] / src / desktop.cpp
index 47dbe1bec648890668f91ef24c244876f1a8305e..e785aab6dcd7a4b0e48cf1bfbc3e6f03cf5961fa 100644 (file)
@@ -9,7 +9,10 @@
  *   bulia byak <buliabyak@users.sf.net>
  *   Ralf Stephan <ralf@ark.in-berlin.de>
  *   John Bintz <jcoswell@coswellproductions.org>
+ *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
  *
+ * Copyright (C) 2007 Jon A. Cruz
+ * Copyright (C) 2006-2007 Johan Engelen
  * Copyright (C) 2006 John Bintz
  * Copyright (C) 2004 MenTaLguY
  * Copyright (C) 1999-2002 Lauris Kaplinski
@@ -52,6 +55,7 @@
 
 #include <glibmm/i18n.h>
 #include <sigc++/functors/mem_fun.h>
+#include <gtkmm.h>
 
 #include "macros.h"
 #include "inkscape-private.h"
@@ -80,6 +84,9 @@
 #include "message-context.h"
 #include "layer-manager.h"
 #include "event-log.h"
+#include "display/canvas-grid.h"
+
+#include "display/sp-canvas.h"
 
 namespace Inkscape { namespace XML { class Node; }}
 
@@ -99,46 +106,56 @@ static void _update_snap_distances (SPDesktop *desktop);
  * \pre namedview != NULL.
  * \pre canvas != NULL.
  */
-SPDesktop::SPDesktop()
-{
-    _dlg_mgr = NULL;
-    _widget = 0;
-    namedview = NULL;
-    selection = NULL;
-    acetate = NULL;
-    main = NULL;
-    grid = NULL;
-    guides = NULL;
-    drawing = NULL;
-    sketch = NULL;
-    controls = NULL;
-    event_context = 0;
-    layer_manager = 0;
-
+SPDesktop::SPDesktop() :
+    _dlg_mgr( 0 ),
+    namedview( 0 ),
+    canvas( 0 ),
+    selection( 0 ),
+    event_context( 0 ),
+    layer_manager( 0 ),
+    event_log( 0 ),
+    acetate( 0 ),
+    main( 0 ),
+    gridgroup( 0 ),
+    guides( 0 ),
+    drawing( 0 ),
+    sketch( 0 ),
+    controls( 0 ),
+    table( 0 ),
+    page( 0 ),
+    page_border( 0 ),
+    current( 0 ),
+    zooms_past( 0 ),
+    zooms_future( 0 ),
+    dkey( 0 ),
+    number( 0 ),
+    window_state(0),
+    interaction_disabled_counter( 0 ),
+    waiting_cursor( false ),
+    guides_active( false ),
+    gr_item( 0 ),
+    gr_point_type( 0 ),
+    gr_point_i( 0 ),
+    gr_fill_or_stroke( true ),
+    _layer_hierarchy( 0 ),
+    _reconstruction_old_layer_id( 0 ),
+    _widget( 0 ),
+    _inkscape( 0 ),
+    _guides_message_context( 0 ),
+    _active( false ),
+    _w2d(),
+    _d2w(),
+    _doc2dt( NR::Matrix(NR::scale(1, -1)) ),
+    grids_visible( true )
+{
     _d2w.set_identity();
     _w2d.set_identity();
-    _doc2dt = NR::Matrix(NR::scale(1, -1));
-
-    guides_active = false;
-
-    zooms_past = NULL;
-    zooms_future = NULL;
 
-    is_fullscreen = false;
-
-    gr_item = NULL;
-    gr_point_num = 0;
-    gr_fill_or_stroke = true;
-
-    _layer_hierarchy = NULL;
-    _active = false;
-
-    selection = Inkscape::GC::release (new Inkscape::Selection (this));
+    selection = Inkscape::GC::release( new Inkscape::Selection(this) );
 }
 
 void
 SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
-
 {
     _guides_message_context = new Inkscape::MessageContext(const_cast<Inkscape::MessageStack*>(messageStack()));
 
@@ -187,11 +204,15 @@ SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
 
     SP_CANVAS_ARENA (drawing)->arena->delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0); // default is 1 px
 
-    // Start always in normal mode
-    SP_CANVAS_ARENA (drawing)->arena->rendermode = RENDERMODE_NORMAL;
-    canvas->rendermode = RENDERMODE_NORMAL; // canvas needs that for choosing the best buffer size
+    if (prefs_get_int_attribute("options.startmode", "outline", 0)) {
+        // Start in outline mode
+        setDisplayModeOutline();
+    } else {
+        // Start in normal mode, default
+        setDisplayModeNormal();
+    }
 
-    grid = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
+    gridgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
     guides = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
     sketch = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
     controls = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
@@ -251,9 +272,7 @@ SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
     _reconstruction_finish_connection =
         document->connectReconstructionFinish(sigc::bind(sigc::ptr_fun(_reconstruction_finish), this));
     _reconstruction_old_layer_id = NULL;
-    
-    _commit_connection = document->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow));
-    
+
     // ?
     // sp_active_desktop_set (desktop);
     _inkscape = INKSCAPE;
@@ -288,6 +307,8 @@ SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
     /* setup LayerManager */
     //   (Setting up after the connections are all in place, as it may use some of them)
     layer_manager = new Inkscape::LayerManager( this );
+
+    grids_visible = true;
 }
 
 
@@ -342,14 +363,26 @@ void SPDesktop::setDisplayModeNormal()
 {
     SP_CANVAS_ARENA (drawing)->arena->rendermode = RENDERMODE_NORMAL;
     canvas->rendermode = RENDERMODE_NORMAL; // canvas needs that for choosing the best buffer size
+    displayMode = RENDERMODE_NORMAL;
     sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw
+    _widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this)));
 }
 
 void SPDesktop::setDisplayModeOutline()
 {
     SP_CANVAS_ARENA (drawing)->arena->rendermode = RENDERMODE_OUTLINE;
     canvas->rendermode = RENDERMODE_OUTLINE; // canvas needs that for choosing the best buffer size
+    displayMode = RENDERMODE_OUTLINE;
     sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw
+    _widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this)));
+}
+
+void SPDesktop::displayModeToggle()
+{
+    if (displayMode == RENDERMODE_OUTLINE)
+        setDisplayModeNormal();
+    else 
+        setDisplayModeOutline();
 }
 
 /**
@@ -409,8 +442,12 @@ bool SPDesktop::isLayer(SPObject *object) const {
 bool SPDesktop::isWithinViewport (SPItem *item) const
 {
     NR::Rect const viewport = get_display_area();
-    NR::Rect const bbox = sp_item_bbox_desktop(item);
-    return viewport.contains(bbox);
+    NR::Maybe<NR::Rect> const bbox = sp_item_bbox_desktop(item);
+    if (bbox) {
+        return viewport.contains(*bbox);
+    } else {
+        return true;
+    }
 }
 
 ///
@@ -801,7 +838,7 @@ SPDesktop::zoom_page()
     NR::Rect d(NR::Point(0, 0),
                NR::Point(sp_document_width(doc()), sp_document_height(doc())));
 
-    if (d.dimensions()[NR::X] < 1.0 || d.dimensions()[NR::Y] < 1.0) {
+    if (d.isEmpty(1.0)) {
         return;
     }
 
@@ -832,13 +869,13 @@ SPDesktop::zoom_page_width()
 void
 SPDesktop::zoom_selection()
 {
-    NR::Rect const d = selection->bounds();
+    NR::Maybe<NR::Rect> const d = selection->bounds();
 
-    if (d.dimensions()[NR::X] < 0.1 || d.dimensions()[NR::Y] < 0.1) {
+    if ( !d || d->isEmpty(0.1) ) {
         return;
     }
 
-    set_display_area(d, 10);
+    set_display_area(*d, 10);
 }
 
 /**
@@ -860,29 +897,29 @@ SPDesktop::zoom_drawing()
     SPItem *docitem = SP_ITEM (sp_document_root (doc()));
     g_return_if_fail (docitem != NULL);
 
-    NR::Rect d = sp_item_bbox_desktop(docitem);
+    NR::Maybe<NR::Rect> d = sp_item_bbox_desktop(docitem);
 
     /* Note that the second condition here indicates that
     ** there are no items in the drawing.
     */
-    if ( d.dimensions()[NR::X] < 1.0 || d.dimensions()[NR::Y] < 1.0 ) {
+    if ( !d || d->isEmpty(1.0) ) {
         return;
     }
 
-    set_display_area(d, 10);
+    set_display_area(*d, 10);
 }
 
 /**
  * Scroll canvas by specific coordinate amount.
  */
 void
-SPDesktop::scroll_world (double dx, double dy)
+SPDesktop::scroll_world (double dx, double dy, bool is_scrolling)
 {
     g_assert(_widget);
 
     NR::Rect const viewbox = canvas->getViewbox();
 
-    sp_canvas_scroll_to(canvas, viewbox.min()[NR::X] - dx, viewbox.min()[NR::Y] - dy, FALSE);
+    sp_canvas_scroll_to(canvas, viewbox.min()[NR::X] - dx, viewbox.min()[NR::Y] - dy, FALSE, is_scrolling);
 
     _widget->updateRulers();
     _widget->updateScrollbars(expansion(_d2w));
@@ -933,6 +970,36 @@ SPDesktop::scroll_to_point (NR::Point const *p, gdouble autoscrollspeed)
     return false;
 }
 
+bool
+SPDesktop::is_iconified()
+{
+    return 0!=(window_state & GDK_WINDOW_STATE_ICONIFIED);
+}
+
+void
+SPDesktop::iconify()
+{
+    _widget->setIconified();
+}
+
+bool
+SPDesktop::is_maximized()
+{
+    return 0!=(window_state & GDK_WINDOW_STATE_MAXIMIZED);
+}
+
+void
+SPDesktop::maximize()
+{
+    _widget->setMaximized();
+}
+
+bool
+SPDesktop::is_fullscreen()
+{
+    return 0!=(window_state & GDK_WINDOW_STATE_FULLSCREEN);
+}
+
 void
 SPDesktop::fullscreen()
 {
@@ -963,6 +1030,12 @@ SPDesktop::setWindowTransient (void *p, int transient_policy)
     _widget->setTransient (p, transient_policy);
 }
 
+Gtk::Window*
+SPDesktop::getToplevel( )
+{
+    return _widget->getWindow();
+}
+
 void
 SPDesktop::presentWindow()
 {
@@ -1005,6 +1078,35 @@ SPDesktop::shutdown()
     return _widget->shutdown();
 }
 
+bool SPDesktop::onDeleteUI (GdkEventAny*)
+{
+       if(shutdown()) return true;
+       destroyWidget();
+       return false;
+}
+
+/**
+ *  onWindowStateEvent
+ *
+ *  Called when the window changes its maximize/fullscreen/iconify/pinned state.
+ *  Since GTK doesn't have a way to query this state information directly, we
+ *  record it for the desktop here, and also possibly trigger a layout.
+ */
+bool
+SPDesktop::onWindowStateEvent (GdkEventWindowState* event)
+{
+       // Record the desktop window's state
+    window_state = event->new_window_state;
+
+    // Layout may differ depending on full-screen mode or not
+    GdkWindowState changed = event->changed_mask;
+    if (changed & (GDK_WINDOW_STATE_FULLSCREEN|GDK_WINDOW_STATE_MAXIMIZED)) {
+        layoutWidget();
+    }
+       
+       return false;
+}
+
 void
 SPDesktop::setToolboxFocusTo (gchar const *label)
 {
@@ -1047,6 +1149,48 @@ void SPDesktop::disableInteraction()
   _widget->disableInteraction();
 }
 
+void SPDesktop::setWaitingCursor()
+{
+    GdkCursor *waiting = gdk_cursor_new(GDK_WATCH);
+    gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(this))->window, waiting);
+    gdk_cursor_unref(waiting);
+    waiting_cursor = true;
+
+    // Stupidly broken GDK cannot just set the new cursor right now - it needs some main loop iterations for that
+    // Since setting waiting_cursor is usually immediately followed by some Real Work, we must run the iterations here
+    // CAUTION: iterations may redraw, and redraw may be interrupted, so you cannot assume that anything is the same
+    // after the call to setWaitingCursor as it was before
+    while( Gtk::Main::events_pending() )
+       Gtk::Main::iteration();
+}
+
+void SPDesktop::clearWaitingCursor()
+{
+  if (waiting_cursor)
+      sp_event_context_update_cursor(sp_desktop_event_context(this));
+}
+
+void SPDesktop::toggleGrid()
+{
+    if (namedview->grids) {
+        if(gridgroup) {
+            grids_visible = !grids_visible;
+            if (grids_visible) {
+                sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
+            } else {
+                sp_canvas_item_hide(SP_CANVAS_ITEM(gridgroup));
+            }
+        }
+    } else {
+        //there is no grid present at the moment. add a rectangular grid and make it visible
+        Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
+        Inkscape::CanvasGrid::writeNewGridToRepr(repr, sp_desktop_document(this), Inkscape::GRID_RECTANGULAR);
+        grids_visible = true;
+        sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
+    }
+}
+
+
 //----------------------------------------------------------------------
 // Callback implementations. The virtual ones are connected by the view.
 
@@ -1082,7 +1226,6 @@ SPDesktop::updateCanvasNow()
 /**
  * Associate document with desktop.
  */
-/// \todo fixme: refactor SPDesktop::init to use setDocument
 void
 SPDesktop::setDocument (SPDocument *doc)
 {
@@ -1109,10 +1252,11 @@ SPDesktop::setDocument (SPDocument *doc)
     _commit_connection = doc->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow));
 
     /// \todo fixme: This condition exists to make sure the code
-    /// inside is called only once on initialization. But there
+    /// inside is NOT called on initialization, only on replacement. But there
     /// are surely more safe methods to accomplish this.
+    // TODO since the comment had reversed logic, check the intent of this block of code:
     if (drawing) {
-        NRArenaItem *ai;
+        NRArenaItem *ai = 0;
 
         namedview = sp_document_namedview (doc, NULL);
         _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
@@ -1343,9 +1487,9 @@ _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop)
              SP_RGBA32_G_U(nv->pagecolor) +
              SP_RGBA32_B_U(nv->pagecolor)) >= 384) {
             // the background color is light or transparent, use black outline
-            SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = 0xff;
+            SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs_get_int_attribute("options.wireframecolors", "onlight", 0xff);
         } else { // use white outline
-            SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = 0xffffffff;
+            SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs_get_int_attribute("options.wireframecolors", "ondark", 0xffffffff);
         }
     }
 }
@@ -1360,9 +1504,14 @@ _update_snap_distances (SPDesktop *desktop)
 
     SPNamedView &nv = *desktop->namedview;
 
-    nv.snap_manager.grid.setDistance(sp_convert_distance_full(nv.gridtolerance,
+    //tell all grid snappers
+    for ( GSList const *l = nv.grids; l != NULL; l = l->next) {
+        Inkscape::CanvasGrid *grid = (Inkscape::CanvasGrid*) l->data;
+        grid->snapper->setDistance(sp_convert_distance_full(nv.gridtolerance,
                                                                       *nv.gridtoleranceunit,
                                                                       px));
+    }
+    
     nv.snap_manager.guide.setDistance(sp_convert_distance_full(nv.guidetolerance,
                                                                        *nv.guidetoleranceunit,
                                                                        px));