desktop.cpp revision 5c6771ad614c8c281c8fcf8f6c1aa727e981a823
#define __SP_DESKTOP_C__
/** \file
* Editable view implementation
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* MenTaLguY <mental@rydia.net>
* 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) 2006-2008 Johan Engelen
* Copyright (C) 2006 John Bintz
* Copyright (C) 2004 MenTaLguY
* Copyright (C) 1999-2002 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
/** \class SPDesktop
* SPDesktop is a subclass of View, implementing an editable document
* canvas. It is extensively used by many UI controls that need certain
* visual representations of their own.
*
* SPDesktop provides a certain set of SPCanvasItems, serving as GUI
* layers of different control objects. The one containing the whole
* document is the drawing layer. In addition to it, there are grid,
* guide, sketch and control layers. The sketch layer is used for
* temporary drawing objects, before the real objects in document are
* created. The control layer contains editing knots, rubberband and
* similar non-document UI objects.
*
* Each SPDesktop is associated with a SPNamedView node of the document
* tree. Currently, all desktops are created from a single main named
* view, but in the future there may be support for different ones.
* SPNamedView serves as an in-document container for desktop-related
* data, like grid and guideline placement, snapping options and so on.
*
* Associated with each SPDesktop are the two most important editing
* related objects - SPSelection and SPEventContext.
*
* Sodipodi keeps track of the active desktop and invokes notification
* signals whenever it changes. UI elements can use these to update their
* display to the selection of the currently active editing window.
* (Lauris Kaplinski)
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glibmm/i18n.h>
#include <sigc++/functors/mem_fun.h>
#include <gtkmm.h>
#include "macros.h"
#include "inkscape-private.h"
#include "desktop.h"
#include "desktop-events.h"
#include "desktop-handles.h"
#include "document.h"
#include "message-stack.h"
#include "selection.h"
#include "select-context.h"
#include "sp-namedview.h"
#include "color.h"
#include "sp-item-group.h"
#include "prefs-utils.h"
#include "object-hierarchy.h"
#include "helper/units.h"
#include "display/canvas-arena.h"
#include "display/nr-arena.h"
#include "display/gnome-canvas-acetate.h"
#include "display/sodipodi-ctrlrect.h"
#include "display/sp-canvas-util.h"
#include "display/canvas-temporary-item-list.h"
#include "display/snap-indicator.h"
#include "libnr/nr-rect-ops.h"
#include "ui/dialog/dialog-manager.h"
#include "xml/repr.h"
#include "message-context.h"
#include "device-manager.h"
#include "layer-fns.h"
#include "layer-manager.h"
#include "event-log.h"
#include "display/canvas-grid.h"
#include "widgets/desktop-widget.h"
#include "box3d-context.h"
#include "display/sp-canvas.h"
namespace Inkscape { namespace XML { class Node; }}
// Callback declarations
static void _onSelectionChanged (Inkscape::Selection *selection, SPDesktop *desktop);
static gint _arena_handler (SPCanvasArena *arena, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop);
static void _layer_activated(SPObject *layer, SPDesktop *desktop);
static void _layer_deactivated(SPObject *layer, SPDesktop *desktop);
static void _layer_hierarchy_changed(SPObject *top, SPObject *bottom, SPDesktop *desktop);
static void _reconstruction_start(SPDesktop * desktop);
static void _reconstruction_finish(SPDesktop * desktop);
static void _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop);
static void _update_snap_distances (SPDesktop *desktop);
/**
* Return new desktop object.
* \pre namedview != NULL.
* \pre canvas != NULL.
*/
SPDesktop::SPDesktop() :
_dlg_mgr( 0 ),
namedview( 0 ),
canvas( 0 ),
selection( 0 ),
event_context( 0 ),
layer_manager( 0 ),
event_log( 0 ),
temporary_item_list( 0 ),
snapindicator( 0 ),
acetate( 0 ),
main( 0 ),
gridgroup( 0 ),
guides( 0 ),
drawing( 0 ),
sketch( 0 ),
controls( 0 ),
tempgroup ( 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 ),
_display_mode(Inkscape::RENDERMODE_NORMAL),
_saved_display_mode(Inkscape::RENDERMODE_NORMAL),
_widget( 0 ),
_inkscape( 0 ),
_guides_message_context( 0 ),
_active( false ),
_w2d(),
_d2w(),
_doc2dt( NR::Matrix(NR::scale(1, -1)) ),
grids_visible( false )
{
_d2w.setIdentity();
_w2d.setIdentity();
selection = Inkscape::GC::release( new Inkscape::Selection(this) );
}
void
SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
{
// Temporary workaround for link order issues:
Inkscape::DeviceManager::getManager().getDevices();
_guides_message_context = new Inkscape::MessageContext(const_cast<Inkscape::MessageStack*>(messageStack()));
current = sp_repr_css_attr_inherited (inkscape_get_repr (INKSCAPE, "desktop"), "style");
namedview = nv;
canvas = aCanvas;
SPDocument *document = SP_OBJECT_DOCUMENT (namedview);
/* Kill flicker */
sp_document_ensure_up_to_date (document);
/* Setup Dialog Manager */
_dlg_mgr = &Inkscape::UI::Dialog::DialogManager::getInstance();
dkey = sp_item_display_key_new (1);
/* Connect document */
setDocument (document);
number = namedview->getViewCount();
/* Setup Canvas */
g_object_set_data (G_OBJECT (canvas), "SPDesktop", this);
SPCanvasGroup *root = sp_canvas_root (canvas);
/* Setup adminstrative layers */
acetate = sp_canvas_item_new (root, GNOME_TYPE_CANVAS_ACETATE, NULL);
g_signal_connect (G_OBJECT (acetate), "event", G_CALLBACK (sp_desktop_root_handler), this);
main = (SPCanvasGroup *) sp_canvas_item_new (root, SP_TYPE_CANVAS_GROUP, NULL);
g_signal_connect (G_OBJECT (main), "event", G_CALLBACK (sp_desktop_root_handler), this);
table = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
SP_CTRLRECT(table)->setRectangle(NR::Rect(Geom::Point(-80000, -80000), Geom::Point(80000, 80000)));
SP_CTRLRECT(table)->setColor(0x00000000, true, 0x00000000);
sp_canvas_item_move_to_z (table, 0);
page = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
((CtrlRect *) page)->setColor(0x00000000, FALSE, 0x00000000);
page_border = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
drawing = sp_canvas_item_new (main, SP_TYPE_CANVAS_ARENA, NULL);
g_signal_connect (G_OBJECT (drawing), "arena_event", G_CALLBACK (_arena_handler), this);
SP_CANVAS_ARENA (drawing)->arena->delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0); // default is 1 px
if (prefs_get_int_attribute("options.startmode", "outline", 0)) {
// Start in outline mode
setDisplayModeOutline();
} else {
// Start in normal mode, default
setDisplayModeNormal();
}
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);
tempgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
/* Push select tool to the bottom of stack */
/** \todo
* FIXME: this is the only call to this. Everything else seems to just
* call "set" instead of "push". Can we assume that there is only one
* context ever?
*/
push_event_context (SP_TYPE_SELECT_CONTEXT, "tools.select", SP_EVENT_CONTEXT_STATIC);
// display rect and zoom are now handled in sp_desktop_widget_realize()
NR::Rect const d(Geom::Point(0.0, 0.0),
Geom::Point(sp_document_width(document), sp_document_height(document)));
SP_CTRLRECT(page)->setRectangle(d);
SP_CTRLRECT(page_border)->setRectangle(d);
/* the following sets the page shadow on the canvas
It was originally set to 5, which is really cheesy!
It now is an attribute in the document's namedview. If a value of
0 is used, then the constructor for a shadow is not initialized.
*/
if ( namedview->pageshadow != 0 && namedview->showpageshadow ) {
SP_CTRLRECT(page_border)->setShadow(namedview->pageshadow, 0x3f3f3fff);
}
/* Connect event for page resize */
_doc2dt[5] = sp_document_height (document);
sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
_modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
NRArenaItem *ai = sp_item_invoke_show (SP_ITEM (sp_document_root (document)),
SP_CANVAS_ARENA (drawing)->arena,
dkey,
SP_ITEM_SHOW_DISPLAY);
if (ai) {
nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
}
namedview->show(this);
/* Ugly hack */
activate_guides (true);
/* Ugly hack */
_namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
/* Set up notification of rebuilding the document, this allows
for saving object related settings in the document. */
_reconstruction_start_connection =
document->connectReconstructionStart(sigc::bind(sigc::ptr_fun(_reconstruction_start), this));
_reconstruction_finish_connection =
document->connectReconstructionFinish(sigc::bind(sigc::ptr_fun(_reconstruction_finish), this));
_reconstruction_old_layer_id = NULL;
// ?
// sp_active_desktop_set (desktop);
_inkscape = INKSCAPE;
_activate_connection = _activate_signal.connect(
sigc::bind(
sigc::ptr_fun(_onActivate),
this
)
);
_deactivate_connection = _deactivate_signal.connect(
sigc::bind(
sigc::ptr_fun(_onDeactivate),
this
)
);
_sel_modified_connection = selection->connectModified(
sigc::bind(
sigc::ptr_fun(&_onSelectionModified),
this
)
);
_sel_changed_connection = selection->connectChanged(
sigc::bind(
sigc::ptr_fun(&_onSelectionChanged),
this
)
);
/* setup LayerManager */
// (Setting up after the connections are all in place, as it may use some of them)
layer_manager = new Inkscape::LayerManager( this );
showGrids(namedview->grids_visible, false);
temporary_item_list = new Inkscape::Display::TemporaryItemList( this );
snapindicator = new Inkscape::Display::SnapIndicator ( this );
}
void SPDesktop::destroy()
{
if (snapindicator) {
delete snapindicator;
snapindicator = NULL;
}
if (temporary_item_list) {
delete temporary_item_list;
temporary_item_list = NULL;
}
namedview->hide(this);
_activate_connection.disconnect();
_deactivate_connection.disconnect();
_sel_modified_connection.disconnect();
_sel_changed_connection.disconnect();
_modified_connection.disconnect();
_commit_connection.disconnect();
_reconstruction_start_connection.disconnect();
_reconstruction_finish_connection.disconnect();
g_signal_handlers_disconnect_by_func(G_OBJECT (acetate), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
g_signal_handlers_disconnect_by_func(G_OBJECT (main), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
g_signal_handlers_disconnect_by_func(G_OBJECT (drawing), (gpointer) G_CALLBACK(_arena_handler), this);
while (event_context) {
SPEventContext *ec = event_context;
event_context = ec->next;
sp_event_context_finish (ec);
g_object_unref (G_OBJECT (ec));
}
if (_layer_hierarchy) {
delete _layer_hierarchy;
// _layer_hierarchy = NULL; //this should be here, but commented to find other bug somewhere else.
}
if (layer_manager) {
delete layer_manager;
layer_manager = NULL;
}
if (_inkscape) {
_inkscape = NULL;
}
if (drawing) {
sp_item_invoke_hide (SP_ITEM (sp_document_root (doc())), dkey);
drawing = NULL;
}
delete _guides_message_context;
_guides_message_context = NULL;
g_list_free (zooms_past);
g_list_free (zooms_future);
}
SPDesktop::~SPDesktop() {}
//--------------------------------------------------------------------
/* Public methods */
/* These methods help for temporarily showing things on-canvas.
* The *only* valid use of the TemporaryItem* that you get from add_temporary_canvasitem
* is when you want to prematurely remove the item from the canvas, by calling
* desktop->remove_temporary_canvasitem(tempitem).
*/
/** Note that lifetime is measured in milliseconds
* One should *not* keep a reference to the SPCanvasItem, the temporary item code will
* delete the object for you and the reference will become invalid without you knowing it.
* It is perfectly safe to ignore the returned pointer: the object is deleted by itself, so don't delete it elsewhere!
* The *only* valid use of the returned TemporaryItem* is as argument for SPDesktop::remove_temporary_canvasitem,
* because the object might be deleted already without you knowing it.
* move_to_bottom = true by default so the item does not interfere with handling of other items on the canvas like nodes.
*/
Inkscape::Display::TemporaryItem *
SPDesktop::add_temporary_canvasitem (SPCanvasItem *item, guint lifetime, bool move_to_bottom)
{
if (move_to_bottom) {
sp_canvas_item_move_to_z(item, 0);
}
return temporary_item_list->add_item(item, lifetime);
}
/** It is perfectly safe to call this function while the object has already been deleted due to a timeout.
*/
void
SPDesktop::remove_temporary_canvasitem (Inkscape::Display::TemporaryItem * tempitem)
{
// check for non-null temporary_item_list, because during destruction of desktop, some destructor might try to access this list!
if (tempitem && temporary_item_list) {
temporary_item_list->delete_item(tempitem);
}
}
void SPDesktop::_setDisplayMode(Inkscape::RenderMode mode) {
SP_CANVAS_ARENA (drawing)->arena->rendermode = mode;
canvas->rendermode = mode;
_display_mode = mode;
if (mode != Inkscape::RENDERMODE_OUTLINE) {
_saved_display_mode = _display_mode;
}
sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw
_widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this)));
}
void SPDesktop::displayModeToggle() {
if (_display_mode == Inkscape::RENDERMODE_OUTLINE) {
_setDisplayMode(_saved_display_mode);
} else {
_setDisplayMode(Inkscape::RENDERMODE_OUTLINE);
}
}
/**
* Returns current root (=bottom) layer.
*/
SPObject *SPDesktop::currentRoot() const
{
return _layer_hierarchy ? _layer_hierarchy->top() : NULL;
}
/**
* Returns current top layer.
*/
SPObject *SPDesktop::currentLayer() const
{
return _layer_hierarchy ? _layer_hierarchy->bottom() : NULL;
}
/**
* Sets the current layer of the desktop.
*
* Make \a object the top layer.
*/
void SPDesktop::setCurrentLayer(SPObject *object) {
g_return_if_fail(SP_IS_GROUP(object));
g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
// printf("Set Layer to ID: %s\n", SP_OBJECT_ID(object));
_layer_hierarchy->setBottom(object);
}
void SPDesktop::toggleLayerSolo(SPObject *object) {
g_return_if_fail(SP_IS_GROUP(object));
g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
bool othersShowing = false;
std::vector<SPObject*> layers;
for ( SPObject* obj = Inkscape::next_layer(currentRoot(), object); obj; obj = Inkscape::next_layer(currentRoot(), obj) ) {
layers.push_back(obj);
othersShowing |= !SP_ITEM(obj)->isHidden();
}
for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), object); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
layers.push_back(obj);
othersShowing |= !SP_ITEM(obj)->isHidden();
}
if ( SP_ITEM(object)->isHidden() ) {
SP_ITEM(object)->setHidden(false);
}
for ( std::vector<SPObject*>::iterator it = layers.begin(); it != layers.end(); ++it ) {
SP_ITEM(*it)->setHidden(othersShowing);
}
}
/**
* Return layer that contains \a object.
*/
SPObject *SPDesktop::layerForObject(SPObject *object) {
g_return_val_if_fail(object != NULL, NULL);
SPObject *root=currentRoot();
object = SP_OBJECT_PARENT(object);
while ( object && object != root && !isLayer(object) ) {
object = SP_OBJECT_PARENT(object);
}
return object;
}
/**
* True if object is a layer.
*/
bool SPDesktop::isLayer(SPObject *object) const {
return ( SP_IS_GROUP(object)
&& ( SP_GROUP(object)->effectiveLayerMode(this->dkey)
== SPGroup::LAYER ) );
}
/**
* True if desktop viewport fully contains \a item's bbox.
*/
bool SPDesktop::isWithinViewport (SPItem *item) const
{
NR::Rect const viewport = get_display_area();
boost::optional<NR::Rect> const bbox = sp_item_bbox_desktop(item);
if (bbox) {
return viewport.contains(*bbox);
} else {
return true;
}
}
///
bool SPDesktop::itemIsHidden(SPItem const *item) const {
return item->isHidden(this->dkey);
}
/**
* Set activate property of desktop; emit signal if changed.
*/
void
SPDesktop::set_active (bool new_active)
{
if (new_active != _active) {
_active = new_active;
if (new_active) {
_activate_signal.emit();
} else {
_deactivate_signal.emit();
}
}
}
/**
* Set activate status of current desktop's named view.
*/
void
SPDesktop::activate_guides(bool activate)
{
guides_active = activate;
namedview->activateGuides(this, activate);
}
/**
* Make desktop switch documents.
*/
void
SPDesktop::change_document (SPDocument *theDocument)
{
g_return_if_fail (theDocument != NULL);
/* unselect everything before switching documents */
selection->clear();
setDocument (theDocument);
/* update the rulers, connect the desktop widget's signal to the new namedview etc.
(this can probably be done in a better way) */
Gtk::Window *parent = this->getToplevel();
g_assert(parent != NULL);
SPDesktopWidget *dtw = (SPDesktopWidget *) parent->get_data("desktopwidget");
if (dtw) dtw->desktop = this;
sp_desktop_widget_update_namedview(dtw);
_namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
_document_replaced_signal.emit (this, theDocument);
}
/**
* Make desktop switch event contexts.
*/
void
SPDesktop::set_event_context (GtkType type, const gchar *config)
{
SPEventContext *ec;
while (event_context) {
ec = event_context;
sp_event_context_deactivate (ec);
event_context = ec->next;
sp_event_context_finish (ec);
g_object_unref (G_OBJECT (ec));
}
Inkscape::XML::Node *repr = (config) ? inkscape_get_repr (_inkscape, config) : NULL;
ec = sp_event_context_new (type, this, repr, SP_EVENT_CONTEXT_STATIC);
ec->next = event_context;
event_context = ec;
sp_event_context_activate (ec);
_event_context_changed_signal.emit (this, ec);
}
/**
* Push event context onto desktop's context stack.
*/
void
SPDesktop::push_event_context (GtkType type, const gchar *config, unsigned int key)
{
SPEventContext *ref, *ec;
Inkscape::XML::Node *repr;
if (event_context && event_context->key == key) return;
ref = event_context;
while (ref && ref->next && ref->next->key != key) ref = ref->next;
if (ref && ref->next) {
ec = ref->next;
ref->next = ec->next;
sp_event_context_finish (ec);
g_object_unref (G_OBJECT (ec));
}
if (event_context) sp_event_context_deactivate (event_context);
repr = (config) ? inkscape_get_repr (INKSCAPE, config) : NULL;
ec = sp_event_context_new (type, this, repr, key);
ec->next = event_context;
event_context = ec;
sp_event_context_activate (ec);
_event_context_changed_signal.emit (this, ec);
}
/**
* Sets the coordinate status to a given point
*/
void
SPDesktop::set_coordinate_status (Geom::Point p) {
_widget->setCoordinateStatus(p);
}
/**
* \see sp_document_item_from_list_at_point_bottom()
*/
SPItem *
SPDesktop::item_from_list_at_point_bottom (const GSList *list, Geom::Point const p) const
{
g_return_val_if_fail (doc() != NULL, NULL);
return sp_document_item_from_list_at_point_bottom (dkey, SP_GROUP (doc()->root), list, p);
}
/**
* \see sp_document_item_at_point()
*/
SPItem *
SPDesktop::item_at_point (Geom::Point const p, bool into_groups, SPItem *upto) const
{
g_return_val_if_fail (doc() != NULL, NULL);
return sp_document_item_at_point (doc(), dkey, p, into_groups, upto);
}
/**
* \see sp_document_group_at_point()
*/
SPItem *
SPDesktop::group_at_point (Geom::Point const p) const
{
g_return_val_if_fail (doc() != NULL, NULL);
return sp_document_group_at_point (doc(), dkey, p);
}
/**
* \brief Returns the mouse point in document coordinates; if mouse is
* outside the canvas, returns the center of canvas viewpoint
*/
Geom::Point
SPDesktop::point() const
{
Geom::Point p = _widget->getPointer();
Geom::Point pw = sp_canvas_window_to_world (canvas, p);
p = w2d(pw);
NR::Rect const r = canvas->getViewbox();
Geom::Point r0 = w2d(r.min());
Geom::Point r1 = w2d(r.max());
if (p[NR::X] >= r0[NR::X] &&
p[NR::X] <= r1[NR::X] &&
p[NR::Y] >= r1[NR::Y] &&
p[NR::Y] <= r0[NR::Y])
{
return p;
} else {
return (r0 + r1) / 2;
}
}
/**
* Put current zoom data in history list.
*/
void
SPDesktop::push_current_zoom (GList **history)
{
NR::Rect const area = get_display_area();
NRRect *old_zoom = g_new(NRRect, 1);
old_zoom->x0 = area.min()[NR::X];
old_zoom->x1 = area.max()[NR::X];
old_zoom->y0 = area.min()[NR::Y];
old_zoom->y1 = area.max()[NR::Y];
if ( *history == NULL
|| !( ( ((NRRect *) ((*history)->data))->x0 == old_zoom->x0 ) &&
( ((NRRect *) ((*history)->data))->x1 == old_zoom->x1 ) &&
( ((NRRect *) ((*history)->data))->y0 == old_zoom->y0 ) &&
( ((NRRect *) ((*history)->data))->y1 == old_zoom->y1 ) ) )
{
*history = g_list_prepend (*history, old_zoom);
}
}
/**
* Set viewbox (x0, x1, y0 and y1 are in document pixels. Border is in screen pixels).
*/
void
SPDesktop::set_display_area (double x0, double y0, double x1, double y1, double border, bool log)
{
g_assert(_widget);
// save the zoom
if (log) {
push_current_zoom(&zooms_past);
// if we do a logged zoom, our zoom-forward list is invalidated, so delete it
g_list_free (zooms_future);
zooms_future = NULL;
}
double const cx = 0.5 * (x0 + x1);
double const cy = 0.5 * (y0 + y1);
NR::Rect const viewbox = NR::expand(canvas->getViewbox(), border);
double scale = _d2w.descrim();
double newscale;
if (((x1 - x0) * viewbox.dimensions()[NR::Y]) > ((y1 - y0) * viewbox.dimensions()[NR::X])) {
newscale = viewbox.dimensions()[NR::X] / (x1 - x0);
} else {
newscale = viewbox.dimensions()[NR::Y] / (y1 - y0);
}
newscale = CLAMP(newscale, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); // unit: 'screen pixels' per 'document pixels'
int clear = FALSE;
if (!NR_DF_TEST_CLOSE (newscale, scale, 1e-4 * scale)) {
/* Set zoom factors */
_d2w = NR::Matrix(NR::scale(newscale, -newscale));
_w2d = NR::Matrix(NR::scale(1/newscale, 1/-newscale));
sp_canvas_item_affine_absolute(SP_CANVAS_ITEM(main), _d2w);
clear = TRUE;
}
/* Calculate top left corner (in document pixels) */
x0 = cx - 0.5 * viewbox.dimensions()[NR::X] / newscale;
y1 = cy + 0.5 * viewbox.dimensions()[NR::Y] / newscale;
/* Scroll */
sp_canvas_scroll_to (canvas, x0 * newscale - border, y1 * -newscale - border, clear);
/* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
sp_box3d_context_update_lines(event_context);
_widget->updateRulers();
_widget->updateScrollbars(_d2w.descrim());
_widget->updateZoom();
}
void SPDesktop::set_display_area(NR::Rect const &a, NR::Coord b, bool log)
{
set_display_area(a.min()[NR::X], a.min()[NR::Y], a.max()[NR::X], a.max()[NR::Y], b, log);
}
/**
* Return viewbox dimensions.
*/
NR::Rect SPDesktop::get_display_area() const
{
NR::Rect const viewbox = canvas->getViewbox();
double const scale = _d2w[0];
return NR::Rect(Geom::Point(viewbox.min()[NR::X] / scale, viewbox.max()[NR::Y] / -scale),
Geom::Point(viewbox.max()[NR::X] / scale, viewbox.min()[NR::Y] / -scale));
}
/**
* Revert back to previous zoom if possible.
*/
void
SPDesktop::prev_zoom()
{
if (zooms_past == NULL) {
messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No previous zoom."));
return;
}
// push current zoom into forward zooms list
push_current_zoom (&zooms_future);
// restore previous zoom
set_display_area (((NRRect *) zooms_past->data)->x0,
((NRRect *) zooms_past->data)->y0,
((NRRect *) zooms_past->data)->x1,
((NRRect *) zooms_past->data)->y1,
0, false);
// remove the just-added zoom from the past zooms list
zooms_past = g_list_remove (zooms_past, ((NRRect *) zooms_past->data));
}
/**
* Set zoom to next in list.
*/
void
SPDesktop::next_zoom()
{
if (zooms_future == NULL) {
this->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No next zoom."));
return;
}
// push current zoom into past zooms list
push_current_zoom (&zooms_past);
// restore next zoom
set_display_area (((NRRect *) zooms_future->data)->x0,
((NRRect *) zooms_future->data)->y0,
((NRRect *) zooms_future->data)->x1,
((NRRect *) zooms_future->data)->y1,
0, false);
// remove the just-used zoom from the zooms_future list
zooms_future = g_list_remove (zooms_future, ((NRRect *) zooms_future->data));
}
/**
* Zoom to point with absolute zoom factor.
*/
void
SPDesktop::zoom_absolute_keep_point (double cx, double cy, double px, double py, double zoom)
{
zoom = CLAMP (zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX);
// maximum or minimum zoom reached, but there's no exact equality because of rounding errors;
// this check prevents "sliding" when trying to zoom in at maximum zoom;
/// \todo someone please fix calculations properly and remove this hack
if (fabs(_d2w.descrim() - zoom) < 0.0001*zoom && (fabs(SP_DESKTOP_ZOOM_MAX - zoom) < 0.01 || fabs(SP_DESKTOP_ZOOM_MIN - zoom) < 0.000001))
return;
NR::Rect const viewbox = canvas->getViewbox();
double const width2 = viewbox.dimensions()[NR::X] / zoom;
double const height2 = viewbox.dimensions()[NR::Y] / zoom;
set_display_area(cx - px * width2,
cy - py * height2,
cx + (1 - px) * width2,
cy + (1 - py) * height2,
0.0);
}
/**
* Zoom to center with absolute zoom factor.
*/
void
SPDesktop::zoom_absolute (double cx, double cy, double zoom)
{
zoom_absolute_keep_point (cx, cy, 0.5, 0.5, zoom);
}
/**
* Zoom to point with relative zoom factor.
*/
void
SPDesktop::zoom_relative_keep_point (double cx, double cy, double zoom)
{
NR::Rect const area = get_display_area();
if (cx < area.min()[NR::X]) {
cx = area.min()[NR::X];
}
if (cx > area.max()[NR::X]) {
cx = area.max()[NR::X];
}
if (cy < area.min()[NR::Y]) {
cy = area.min()[NR::Y];
}
if (cy > area.max()[NR::Y]) {
cy = area.max()[NR::Y];
}
gdouble const scale = _d2w.descrim() * zoom;
double const px = (cx - area.min()[NR::X]) / area.dimensions()[NR::X];
double const py = (cy - area.min()[NR::Y]) / area.dimensions()[NR::Y];
zoom_absolute_keep_point(cx, cy, px, py, scale);
}
/**
* Zoom to center with relative zoom factor.
*/
void
SPDesktop::zoom_relative (double cx, double cy, double zoom)
{
gdouble scale = _d2w.descrim() * zoom;
zoom_absolute (cx, cy, scale);
}
/**
* Set display area to origin and current document dimensions.
*/
void
SPDesktop::zoom_page()
{
NR::Rect d(Geom::Point(0, 0),
Geom::Point(sp_document_width(doc()), sp_document_height(doc())));
if (d.isEmpty(1.0)) {
return;
}
set_display_area(d, 10);
}
/**
* Set display area to current document width.
*/
void
SPDesktop::zoom_page_width()
{
NR::Rect const a = get_display_area();
if (sp_document_width(doc()) < 1.0) {
return;
}
NR::Rect d(Geom::Point(0, a.midpoint()[NR::Y]),
Geom::Point(sp_document_width(doc()), a.midpoint()[NR::Y]));
set_display_area(d, 10);
}
/**
* Zoom to selection.
*/
void
SPDesktop::zoom_selection()
{
boost::optional<NR::Rect> const d = selection->bounds();
if ( !d || d->isEmpty(0.1) ) {
return;
}
set_display_area(*d, 10);
}
/**
* Tell widget to let zoom widget grab keyboard focus.
*/
void
SPDesktop::zoom_grab_focus()
{
_widget->letZoomGrabFocus();
}
/**
* Zoom to whole drawing.
*/
void
SPDesktop::zoom_drawing()
{
g_return_if_fail (doc() != NULL);
SPItem *docitem = SP_ITEM (sp_document_root (doc()));
g_return_if_fail (docitem != NULL);
boost::optional<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 || d->isEmpty(1.0) ) {
return;
}
set_display_area(*d, 10);
}
/**
* Scroll canvas by specific coordinate amount in svg coordinates.
*/
void
SPDesktop::scroll_world_in_svg_coords (double dx, double dy, bool is_scrolling)
{
double scale = _d2w.descrim();
scroll_world(dx*scale, dy*scale, is_scrolling);
}
/**
* Scroll canvas by specific coordinate amount.
*/
void
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, is_scrolling);
/* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
sp_box3d_context_update_lines(event_context);
_widget->updateRulers();
_widget->updateScrollbars(_d2w.descrim());
}
bool
SPDesktop::scroll_to_point (Geom::Point const &p, gdouble autoscrollspeed)
{
gdouble autoscrolldistance = (gdouble) prefs_get_int_attribute_limited ("options.autoscrolldistance", "value", 0, -1000, 10000);
// autoscrolldistance is in screen pixels, but the display area is in document units
autoscrolldistance /= _d2w.descrim();
NR::Rect const dbox = NR::expand(get_display_area(), -autoscrolldistance);
if (!(p[NR::X] > dbox.min()[NR::X] && p[NR::X] < dbox.max()[NR::X]) ||
!(p[NR::Y] > dbox.min()[NR::Y] && p[NR::Y] < dbox.max()[NR::Y]) ) {
Geom::Point const s_w( p * (Geom::Matrix)_d2w );
gdouble x_to;
if (p[NR::X] < dbox.min()[NR::X])
x_to = dbox.min()[NR::X];
else if (p[NR::X] > dbox.max()[NR::X])
x_to = dbox.max()[NR::X];
else
x_to = p[NR::X];
gdouble y_to;
if (p[NR::Y] < dbox.min()[NR::Y])
y_to = dbox.min()[NR::Y];
else if (p[NR::Y] > dbox.max()[NR::Y])
y_to = dbox.max()[NR::Y];
else
y_to = p[NR::Y];
Geom::Point const d_dt(x_to, y_to);
Geom::Point const d_w( d_dt * _d2w );
Geom::Point const moved_w( d_w - s_w );
if (autoscrollspeed == 0)
autoscrollspeed = prefs_get_double_attribute_limited ("options.autoscrollspeed", "value", 1, 0, 10);
if (autoscrollspeed != 0)
scroll_world (autoscrollspeed * moved_w);
return true;
}
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()
{
_widget->setFullscreen();
}
void
SPDesktop::getWindowGeometry (gint &x, gint &y, gint &w, gint &h)
{
_widget->getGeometry (x, y, w, h);
}
void
SPDesktop::setWindowPosition (Geom::Point p)
{
_widget->setPosition (p);
}
void
SPDesktop::setWindowSize (gint w, gint h)
{
_widget->setSize (w, h);
}
void
SPDesktop::setWindowTransient (void *p, int transient_policy)
{
_widget->setTransient (p, transient_policy);
}
Gtk::Window*
SPDesktop::getToplevel( )
{
return _widget->getWindow();
}
void
SPDesktop::presentWindow()
{
_widget->present();
}
bool
SPDesktop::warnDialog (gchar *text)
{
return _widget->warnDialog (text);
}
void
SPDesktop::toggleRulers()
{
_widget->toggleRulers();
}
void
SPDesktop::toggleScrollbars()
{
_widget->toggleScrollbars();
}
void
SPDesktop::layoutWidget()
{
_widget->layout();
}
void
SPDesktop::destroyWidget()
{
_widget->destroy();
}
bool
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)
{
_widget->setToolboxFocusTo (label);
}
void
SPDesktop::setToolboxAdjustmentValue (gchar const* id, double val)
{
_widget->setToolboxAdjustmentValue (id, val);
}
void
SPDesktop::setToolboxSelectOneValue (gchar const* id, gint val)
{
_widget->setToolboxSelectOneValue (id, val);
}
bool
SPDesktop::isToolboxButtonActive (gchar const *id)
{
return _widget->isToolboxButtonActive (id);
}
void
SPDesktop::emitToolSubselectionChanged(gpointer data)
{
_tool_subselection_changed.emit(data);
inkscape_subselection_changed (this);
}
void
SPDesktop::updateNow()
{
sp_canvas_update_now(canvas);
}
void
SPDesktop::enableInteraction()
{
_widget->enableInteraction();
}
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);
// GDK needs the flush for the cursor change to take effect
gdk_flush();
waiting_cursor = true;
}
void SPDesktop::clearWaitingCursor()
{
if (waiting_cursor)
sp_event_context_update_cursor(sp_desktop_event_context(this));
}
void SPDesktop::toggleColorProfAdjust()
{
_widget->toggleColorProfAdjust();
}
void SPDesktop::toggleGrids()
{
if (namedview->grids) {
if(gridgroup) {
showGrids(!grids_visible);
}
} 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);
showGrids(true);
}
}
void SPDesktop::showGrids(bool show, bool dirty_document)
{
grids_visible = show;
sp_namedview_show_grids(namedview, grids_visible, dirty_document);
if (show) {
sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
} else {
sp_canvas_item_hide(SP_CANVAS_ITEM(gridgroup));
}
}
void SPDesktop::toggleSnapping()
{
bool v = namedview->snap_manager.getSnapEnabledGlobally();
Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
sp_repr_set_boolean(repr, "inkscape:snap-global", !v);
}
//----------------------------------------------------------------------
// Callback implementations. The virtual ones are connected by the view.
void
SPDesktop::onPositionSet (double x, double y)
{
_widget->viewSetPosition (Geom::Point(x,y));
}
void
SPDesktop::onResized (double /*x*/, double /*y*/)
{
// Nothing called here
}
/**
* Redraw callback; queues Gtk redraw; connected by View.
*/
void
SPDesktop::onRedrawRequested ()
{
if (main) {
_widget->requestCanvasUpdate();
}
}
void
SPDesktop::updateCanvasNow()
{
_widget->requestCanvasUpdateAndWait();
}
/**
* Associate document with desktop.
*/
void
SPDesktop::setDocument (SPDocument *doc)
{
if (this->doc() && doc) {
namedview->hide(this);
sp_item_invoke_hide (SP_ITEM (sp_document_root (this->doc())), dkey);
}
if (_layer_hierarchy) {
_layer_hierarchy->clear();
delete _layer_hierarchy;
}
_layer_hierarchy = new Inkscape::ObjectHierarchy(NULL);
_layer_hierarchy->connectAdded(sigc::bind(sigc::ptr_fun(_layer_activated), this));
_layer_hierarchy->connectRemoved(sigc::bind(sigc::ptr_fun(_layer_deactivated), this));
_layer_hierarchy->connectChanged(sigc::bind(sigc::ptr_fun(_layer_hierarchy_changed), this));
_layer_hierarchy->setTop(SP_DOCUMENT_ROOT(doc));
/* setup EventLog */
event_log = new Inkscape::EventLog(doc);
doc->addUndoObserver(*event_log);
_commit_connection.disconnect();
_commit_connection = doc->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow));
/// \todo fixme: This condition exists to make sure the code
/// 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 = 0;
namedview = sp_document_namedview (doc, NULL);
_modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
number = namedview->getViewCount();
ai = sp_item_invoke_show (SP_ITEM (sp_document_root (doc)),
SP_CANVAS_ARENA (drawing)->arena,
dkey,
SP_ITEM_SHOW_DISPLAY);
if (ai) {
nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
}
namedview->show(this);
/* Ugly hack */
activate_guides (true);
/* Ugly hack */
_namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
}
_document_replaced_signal.emit (this, doc);
View::setDocument (doc);
}
void
SPDesktop::onStatusMessage
(Inkscape::MessageType type, gchar const *message)
{
if (_widget) {
_widget->setMessage(type, message);
}
}
void
SPDesktop::onDocumentURISet (gchar const* uri)
{
_widget->setTitle(uri);
}
/**
* Resized callback.
*/
void
SPDesktop::onDocumentResized (gdouble width, gdouble height)
{
_doc2dt[5] = height;
sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
NR::Rect const a(Geom::Point(0, 0), Geom::Point(width, height));
SP_CTRLRECT(page)->setRectangle(a);
SP_CTRLRECT(page_border)->setRectangle(a);
}
void
SPDesktop::_onActivate (SPDesktop* dt)
{
if (!dt->_widget) return;
dt->_widget->activateDesktop();
}
void
SPDesktop::_onDeactivate (SPDesktop* dt)
{
if (!dt->_widget) return;
dt->_widget->deactivateDesktop();
}
void
SPDesktop::_onSelectionModified
(Inkscape::Selection */*selection*/, guint /*flags*/, SPDesktop *dt)
{
if (!dt->_widget) return;
dt->_widget->updateScrollbars (dt->_d2w.descrim());
}
static void
_onSelectionChanged
(Inkscape::Selection *selection, SPDesktop *desktop)
{
/** \todo
* only change the layer for single selections, or what?
* This seems reasonable -- for multiple selections there can be many
* different layers involved.
*/
SPItem *item=selection->singleItem();
if (item) {
SPObject *layer=desktop->layerForObject(item);
if ( layer && layer != desktop->currentLayer() ) {
desktop->setCurrentLayer(layer);
}
}
}
/**
* Calls event handler of current event context.
* \param arena Unused
* \todo fixme
*/
static gint
_arena_handler (SPCanvasArena */*arena*/, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop)
{
if (ai) {
SPItem *spi = (SPItem*)NR_ARENA_ITEM_GET_DATA (ai);
return sp_event_context_item_handler (desktop->event_context, spi, event);
} else {
return sp_event_context_root_handler (desktop->event_context, event);
}
}
static void
_layer_activated(SPObject *layer, SPDesktop *desktop) {
g_return_if_fail(SP_IS_GROUP(layer));
SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::LAYER);
}
/// Callback
static void
_layer_deactivated(SPObject *layer, SPDesktop *desktop) {
g_return_if_fail(SP_IS_GROUP(layer));
SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::GROUP);
}
/// Callback
static void
_layer_hierarchy_changed(SPObject */*top*/, SPObject *bottom,
SPDesktop *desktop)
{
desktop->_layer_changed_signal.emit (bottom);
}
/// Called when document is starting to be rebuilt.
static void
_reconstruction_start (SPDesktop * desktop)
{
// printf("Desktop, starting reconstruction\n");
desktop->_reconstruction_old_layer_id = g_strdup(SP_OBJECT_ID(desktop->currentLayer()));
desktop->_layer_hierarchy->setBottom(desktop->currentRoot());
/*
GSList const * selection_objs = desktop->selection->list();
for (; selection_objs != NULL; selection_objs = selection_objs->next) {
}
*/
desktop->selection->clear();
// printf("Desktop, starting reconstruction end\n");
}
/// Called when document rebuild is finished.
static void
_reconstruction_finish (SPDesktop * desktop)
{
// printf("Desktop, finishing reconstruction\n");
if (desktop->_reconstruction_old_layer_id == NULL)
return;
SPObject * newLayer = SP_OBJECT_DOCUMENT(desktop->namedview)->getObjectById(desktop->_reconstruction_old_layer_id);
if (newLayer != NULL)
desktop->setCurrentLayer(newLayer);
g_free(desktop->_reconstruction_old_layer_id);
desktop->_reconstruction_old_layer_id = NULL;
// printf("Desktop, finishing reconstruction end\n");
return;
}
/**
* Namedview_modified callback.
*/
static void
_namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop)
{
SPNamedView *nv=SP_NAMEDVIEW(obj);
if (flags & SP_OBJECT_MODIFIED_FLAG) {
/* Recalculate snap distances */
/* FIXME: why is the desktop getting involved in setting up something
** that is entirely to do with the namedview?
*/
_update_snap_distances (desktop);
/* Show/hide page background */
if (nv->pagecolor & 0xff) {
sp_canvas_item_show (desktop->table);
((CtrlRect *) desktop->table)->setColor(0x00000000, true, nv->pagecolor);
sp_canvas_item_move_to_z (desktop->table, 0);
} else {
sp_canvas_item_hide (desktop->table);
}
/* Show/hide page border */
if (nv->showborder) {
// show
sp_canvas_item_show (desktop->page_border);
// set color and shadow
((CtrlRect *) desktop->page_border)->setColor(nv->bordercolor, false, 0x00000000);
if (nv->pageshadow) {
((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
}
// place in the z-order stack
if (nv->borderlayer == SP_BORDER_LAYER_BOTTOM) {
sp_canvas_item_move_to_z (desktop->page_border, 2);
} else {
int order = sp_canvas_item_order (desktop->page_border);
int morder = sp_canvas_item_order (desktop->drawing);
if (morder > order) sp_canvas_item_raise (desktop->page_border,
morder - order);
}
} else {
sp_canvas_item_hide (desktop->page_border);
if (nv->pageshadow) {
((CtrlRect *) desktop->page)->setShadow(0, 0x00000000);
}
}
/* Show/hide page shadow */
if (nv->showpageshadow && nv->pageshadow) {
((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
} else {
((CtrlRect *) desktop->page_border)->setShadow(0, 0x00000000);
}
if (SP_RGBA32_A_U(nv->pagecolor) < 128 ||
(SP_RGBA32_R_U(nv->pagecolor) +
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 = prefs_get_int_attribute("options.wireframecolors", "onlight", 0xff);
} else { // use white outline
SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs_get_int_attribute("options.wireframecolors", "ondark", 0xffffffff);
}
}
}
/**
* Callback to reset snapper's distances.
*/
static void
_update_snap_distances (SPDesktop *desktop)
{
SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
SPNamedView &nv = *desktop->namedview;
//tell all grid snappers
for ( GSList const *l = nv.grids; l != NULL; l = l->next) {
Inkscape::CanvasGrid *grid = (Inkscape::CanvasGrid*) l->data;
grid->snapper->setSnapperTolerance(sp_convert_distance_full(nv.gridtolerance,
*nv.gridtoleranceunit,
px));
}
nv.snap_manager.guide.setSnapperTolerance(sp_convert_distance_full(nv.guidetolerance,
*nv.guidetoleranceunit,
px));
nv.snap_manager.object.setSnapperTolerance(sp_convert_distance_full(nv.objecttolerance,
*nv.objecttoleranceunit,
px));
}
Geom::Matrix SPDesktop::w2d() const
{
return _w2d;
}
Geom::Point SPDesktop::w2d(Geom::Point const &p) const
{
return p * _w2d;
}
Geom::Point SPDesktop::d2w(Geom::Point const &p) const
{
return p * _d2w;
}
Geom::Matrix SPDesktop::doc2dt() const
{
return _doc2dt;
}
Geom::Point SPDesktop::doc2dt(Geom::Point const &p) const
{
return p * _doc2dt;
}
Geom::Point SPDesktop::dt2doc(Geom::Point const &p) const
{
return p * _doc2dt.inverse();
}
/**
* Pop event context from desktop's context stack. Never used.
*/
// void
// SPDesktop::pop_event_context (unsigned int key)
// {
// SPEventContext *ec = NULL;
//
// if (event_context && event_context->key == key) {
// g_return_if_fail (event_context);
// g_return_if_fail (event_context->next);
// ec = event_context;
// sp_event_context_deactivate (ec);
// event_context = ec->next;
// sp_event_context_activate (event_context);
// _event_context_changed_signal.emit (this, ec);
// }
//
// SPEventContext *ref = event_context;
// while (ref && ref->next && ref->next->key != key)
// ref = ref->next;
//
// if (ref && ref->next) {
// ec = ref->next;
// ref->next = ec->next;
// }
//
// if (ec) {
// sp_event_context_finish (ec);
// g_object_unref (G_OBJECT (ec));
// }
// }
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :