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diff --git a/src/desktop-events.cpp b/src/desktop-events.cpp
index fbbbfee197d3e045adf249ade89da14a63c562ec..cea478f85847c35d149ef913d8e6d63b32b26856 100644 (file)
--- a/src/desktop-events.cpp
+++ b/src/desktop-events.cpp
-#define __SP_DESKTOP_EVENTS_C__
-
-/*
- * Event handlers for SPDesktop
- *
- * Author:
+/** @file
+ * @brief Event handlers for SPDesktop
+ */
+/* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 1999-2002 Lauris Kaplinski
#endif
#include <map>
#include <string>
+#include <2geom/line.h>
+#include <glibmm/i18n.h>
+
+#include "desktop.h"
+#include "desktop-handles.h"
+#include "dialogs/dialog-events.h"
+#include "display/canvas-axonomgrid.h"
+#include "display/canvas-grid.h"
#include "display/guideline.h"
#include "display/snap-indicator.h"
+#include "document.h"
+#include "event-context.h"
+#include "helper/action.h"
#include "helper/unit-menu.h"
#include "helper/units.h"
-#include "desktop.h"
-#include "document.h"
+#include "message-context.h"
+#include "preferences.h"
+#include "snap.h"
#include "sp-guide.h"
+#include "sp-metrics.h"
#include "sp-namedview.h"
-#include "desktop-handles.h"
-#include "event-context.h"
+#include "tools-switch.h"
+#include "ui/dialog/guides.h"
#include "widgets/desktop-widget.h"
-#include "sp-metrics.h"
-#include <glibmm/i18n.h>
-#include "dialogs/dialog-events.h"
-#include "message-context.h"
#include "xml/repr.h"
-#include "dialogs/guidelinedialog.h"
-#include "snap.h"
-#include "display/canvas-grid.h"
-#include "display/canvas-axonomgrid.h"
-#include "preferences.h"
-#include "helper/action.h"
-#include "tools-switch.h"
-#include <2geom/point.h>
static void snoop_extended(GdkEvent* event, SPDesktop *desktop);
static void init_extended();
return sp_event_context_root_handler(desktop->event_context, event);
}
-
static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
{
static bool dragging = false;
case GDK_BUTTON_PRESS:
if (event->button.button == 1) {
dragging = true;
- sp_canvas_set_snap_delay_active(desktop->canvas, true);
+
+ // FIXME: The snap delay mechanism won't work here, because it has been implemented for the event context. Dragging
+ // guides off the ruler will send event to the ruler and not to the context, which bypasses sp_event_context_snap_delay_handler
+
Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
Geom::Point const event_dt(desktop->w2d(event_w));
@@ -146,7 +147,10 @@ static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidge
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
- m.guideSnap(event_dt, normal);
+ // We only have a temporary guide which is not stored in our document yet.
+ // Because the guide snapper only looks in the document for guides to snap to,
+ // we don't have to worry about a guide snapping to itself here
+ m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
sp_guideline_set_position(SP_GUIDELINE(guide), from_2geom(event_dt));
desktop->set_coordinate_status(to_2geom(event_dt));
@@ -161,10 +165,15 @@ static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidge
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
- m.guideSnap(event_dt, normal);
+ // We only have a temporary guide which is not stored in our document yet.
+ // Because the guide snapper only looks in the document for guides to snap to,
+ // we don't have to worry about a guide snapping to itself here
+ m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
dragging = false;
- sp_canvas_set_snap_delay_active(desktop->canvas, false);
+
+ sp_event_context_discard_delayed_snap_event(desktop->event_context);
+
gtk_object_destroy(GTK_OBJECT(guide));
guide = NULL;
if ((horiz ? wy : wx) >= 0) {
@@ -178,6 +187,14 @@ static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidge
_("Create guide"));
}
desktop->set_coordinate_status(from_2geom(event_dt));
+
+ // A dt_ruler_event might be emitted when dragging a guide of the rulers
+ // while drawing a Bezier curve. In such a situation, we're already in that
+ // specific context and the snap delay is already active. We should interfere
+ // with that context and we should therefore leave the snap delay status
+ // as it is. So although it might have been set to active above on
+ // GDK_BUTTON_PRESS, we should not set it back to inactive here. That must be
+ // done by the context.
}
default:
break;
@@ -196,22 +213,27 @@ int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
return sp_dt_ruler_event(widget, event, dtw, false);
}
-/* Guides */
+static Geom::Point drag_origin;
+static SPGuideDragType drag_type = SP_DRAG_NONE;
+//static bool reset_drag_origin = false; // when Ctrl is pressed while dragging, this is used to trigger resetting of the
+// // drag origin to that location so that constrained movement is more intuitive
+
+// Min distance from anchor to initiate rotation, measured in screenpixels
+#define tol 40.0
gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
{
- static bool dragging = false;
static bool moved = false;
gint ret = FALSE;
SPGuide *guide = SP_GUIDE(data);
SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
- switch (event->type) {
+ switch (event->type) {
case GDK_2BUTTON_PRESS:
if (event->button.button == 1) {
- dragging = false;
- sp_canvas_set_snap_delay_active(desktop->canvas, false);
+ drag_type = SP_DRAG_NONE;
+ sp_event_context_discard_delayed_snap_event(desktop->event_context);
sp_canvas_item_ungrab(item, event->button.time);
Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
ret = TRUE;
break;
case GDK_BUTTON_PRESS:
if (event->button.button == 1) {
- if (event->button.state & GDK_CONTROL_MASK) {
- SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
- sp_guide_remove(guide);
- sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));
- ret = TRUE;
- break;
+ Geom::Point const event_w(event->button.x, event->button.y);
+ Geom::Point const event_dt(desktop->w2d(event_w));
+
+ // Due to the tolerance allowed when grabbing a guide, event_dt will generally
+ // be close to the guide but not just exactly on it. The drag origin calculated
+ // here must be exactly on the guide line though, otherwise
+ // small errors will occur once we snap, see
+ // https://bugs.launchpad.net/inkscape/+bug/333762
+ drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle()));
+
+ if (event->button.state & GDK_SHIFT_MASK) {
+ // with shift we rotate the guide
+ drag_type = SP_DRAG_ROTATE;
+ } else {
+ if (event->button.state & GDK_CONTROL_MASK) {
+ drag_type = SP_DRAG_MOVE_ORIGIN;
+ } else {
+ drag_type = SP_DRAG_TRANSLATE;
+ }
+ }
+
+ if (drag_type == SP_DRAG_ROTATE || drag_type == SP_DRAG_TRANSLATE) {
+ sp_canvas_item_grab(item,
+ ( GDK_BUTTON_RELEASE_MASK |
+ GDK_BUTTON_PRESS_MASK |
+ GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),
+ NULL,
+ event->button.time);
}
- dragging = true;
- sp_canvas_set_snap_delay_active(desktop->canvas, true);
- sp_canvas_item_grab(item,
- ( GDK_BUTTON_RELEASE_MASK |
- GDK_BUTTON_PRESS_MASK |
- GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),
- NULL,
- event->button.time);
ret = TRUE;
}
break;
- case GDK_MOTION_NOTIFY:
- if (dragging) {
+ case GDK_MOTION_NOTIFY:
+ if (drag_type != SP_DRAG_NONE) {
Geom::Point const motion_w(event->motion.x,
- event->motion.y);
- Geom::Point motion_dt(to_2geom(desktop->w2d(from_2geom(motion_w))));
+ event->motion.y);
+ Geom::Point motion_dt(desktop->w2d(motion_w));
// This is for snapping while dragging existing guidelines. New guidelines,
// which are dragged off the ruler, are being snapped in sp_dt_ruler_event
SnapManager &m = desktop->namedview->snap_manager;
- m.setup(desktop);
- m.guideSnap(motion_dt, to_2geom(guide->normal_to_line));
+ m.setup(desktop, true, NULL, NULL, guide);
+ if (drag_type == SP_DRAG_MOVE_ORIGIN) {
+ // If we snap in guideConstrainedSnap() below, then motion_dt will
+ // be forced to be on the guide. If we don't snap however, then
+ // the origin should still be constrained to the guide. So let's do
+ // that explicitly first:
+
+ Geom::Line line(guide->point_on_line, guide->angle());
+ Geom::Coord t = line.nearestPoint(motion_dt);
+ motion_dt = line.pointAt(t);
+ m.guideConstrainedSnap(motion_dt, *guide);
+ } else {
+ m.guideFreeSnap(motion_dt, guide->normal_to_line, drag_type);
+ }
- sp_guide_moveto(*guide, from_2geom(motion_dt), false);
+ switch (drag_type) {
+ case SP_DRAG_TRANSLATE:
+ {
+ sp_guide_moveto(*guide, motion_dt, false);
+ break;
+ }
+ case SP_DRAG_ROTATE:
+ {
+ Geom::Point pt = motion_dt - guide->point_on_line;
+ double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
+ if (event->motion.state & GDK_CONTROL_MASK) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
+ if (snaps) {
+ double sections = floor(angle * snaps / M_PI + .5);
+ angle = (M_PI / snaps) * sections;
+ }
+ }
+ sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), false);
+ break;
+ }
+ case SP_DRAG_MOVE_ORIGIN:
+ {
+ sp_guide_moveto(*guide, motion_dt, false);
+ break;
+ }
+ case SP_DRAG_NONE:
+ g_assert_not_reached();
+ break;
+ }
moved = true;
desktop->set_coordinate_status(from_2geom(motion_dt));
desktop->setPosition(from_2geom(motion_dt));
}
break;
case GDK_BUTTON_RELEASE:
- if (dragging && event->button.button == 1) {
+ if (drag_type != SP_DRAG_NONE && event->button.button == 1) {
if (moved) {
Geom::Point const event_w(event->button.x,
event->button.y);
Geom::Point event_dt(desktop->w2d(event_w));
SnapManager &m = desktop->namedview->snap_manager;
- m.setup(desktop);
- m.guideSnap(event_dt, guide->normal_to_line);
+ m.setup(desktop, true, NULL, NULL, guide);
+ if (drag_type == SP_DRAG_MOVE_ORIGIN) {
+ // If we snap in guideConstrainedSnap() below, then motion_dt will
+ // be forced to be on the guide. If we don't snap however, then
+ // the origin should still be constrained to the guide. So let's
+ // do that explicitly first:
+ Geom::Line line(guide->point_on_line, guide->angle());
+ Geom::Coord t = line.nearestPoint(event_dt);
+ event_dt = line.pointAt(t);
+ m.guideConstrainedSnap(event_dt, *guide);
+ } else {
+ m.guideFreeSnap(event_dt, guide->normal_to_line, drag_type);
+ }
if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
- sp_guide_moveto(*guide, from_2geom(event_dt), true);
+ switch (drag_type) {
+ case SP_DRAG_TRANSLATE:
+ {
+ sp_guide_moveto(*guide, event_dt, true);
+ break;
+ }
+ case SP_DRAG_ROTATE:
+ {
+ Geom::Point pt = event_dt - guide->point_on_line;
+ double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
+ if (event->motion.state & GDK_CONTROL_MASK) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
+ if (snaps) {
+ double sections = floor(angle * snaps / M_PI + .5);
+ angle = (M_PI / snaps) * sections;
+ }
+ }
+ sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), true);
+ break;
+ }
+ case SP_DRAG_MOVE_ORIGIN:
+ {
+ sp_guide_moveto(*guide, event_dt, true);
+ break;
+ }
+ case SP_DRAG_NONE:
+ g_assert_not_reached();
+ break;
+ }
sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
- _("Move guide"));
+ _("Move guide"));
} else {
/* Undo movement of any attached shapes. */
sp_guide_moveto(*guide, guide->point_on_line, false);
+ sp_guide_set_normal(*guide, guide->normal_to_line, false);
sp_guide_remove(guide);
sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
_("Delete guide"));
desktop->set_coordinate_status(from_2geom(event_dt));
desktop->setPosition (from_2geom(event_dt));
}
- dragging = false;
- sp_canvas_set_snap_delay_active(desktop->canvas, false);
+ drag_type = SP_DRAG_NONE;
+ sp_event_context_discard_delayed_snap_event(desktop->event_context);
sp_canvas_item_ungrab(item, event->button.time);
ret=TRUE;
}
{
sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
+ // set move or rotate cursor
+ Geom::Point const event_w(event->crossing.x, event->crossing.y);
+ Geom::Point const event_dt(desktop->w2d(event_w));
+
+ if (event->crossing.state & GDK_SHIFT_MASK) {
+ GdkCursor *guide_cursor;
+ guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
+ gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
+ gdk_cursor_unref(guide_cursor);
+ }
+
char *guide_description = sp_guide_description(guide);
desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);
g_free(guide_description);
}
case GDK_LEAVE_NOTIFY:
sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
+
+ // restore event context's cursor
+ gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, desktop->event_context->cursor);
+
desktop->guidesMessageContext()->clear();
break;
- default:
+ case GDK_KEY_PRESS:
+ switch (get_group0_keyval (&event->key)) {
+ case GDK_Delete:
+ case GDK_KP_Delete:
+ case GDK_BackSpace:
+ {
+ SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
+ sp_guide_remove(guide);
+ sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));
+ ret = TRUE;
+ break;
+ }
+ case GDK_Shift_L:
+ case GDK_Shift_R:
+ GdkCursor *guide_cursor;
+ guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
+ gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
+ gdk_cursor_unref(guide_cursor);
+ ret = TRUE;
+ default:
+ // do nothing;
+ break;
+ }
break;
+ case GDK_KEY_RELEASE:
+ switch (get_group0_keyval (&event->key)) {
+ case GDK_Shift_L:
+ case GDK_Shift_R:
+ GdkCursor *guide_cursor;
+ guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
+ gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
+ gdk_cursor_unref(guide_cursor);
+ break;
+ default:
+ // do nothing;
+ break;
+ }
+ default:
+ break;
}
return ret;