Moved and renamed some tool-related files.

(bzr r12785)

1 files changed, 494 insertions, 0 deletions

diff --git a/src/ui/tools/star-tool.cpp b/src/ui/tools/star-tool.cpp
new file mode 100644
index 000000000..b5d8c4418
--- /dev/null
+++ b/src/ui/tools/star-tool.cpp
@@ -0,0 +1,494 @@
+/*
+ * Star drawing context
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2001-2002 Mitsuru Oka
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <cstring>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+
+#include "macros.h"
+#include "display/sp-canvas.h"
+#include "sp-star.h"
+#include "document.h"
+#include "document-undo.h"
+#include "sp-namedview.h"
+#include "selection.h"
+#include "desktop-handles.h"
+#include "snap.h"
+#include "desktop.h"
+#include "desktop-style.h"
+#include "message-context.h"
+#include "pixmaps/cursor-star.xpm"
+#include <glibmm/i18n.h>
+#include "preferences.h"
+#include "xml/repr.h"
+#include "xml/node-event-vector.h"
+#include "context-fns.h"
+#include "shape-editor.h"
+#include "verbs.h"
+#include "display/sp-canvas-item.h"
+
+#include "ui/tools/star-tool.h"
+
+using Inkscape::DocumentUndo;
+
+#include "tool-factory.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+namespace {
+	ToolBase* createStarContext() {
+		return new StarTool();
+	}
+
+	bool starContextRegistered = ToolFactory::instance().registerObject("/tools/shapes/star", createStarContext);
+}
+
+const std::string& StarTool::getPrefsPath() {
+	return StarTool::prefsPath;
+}
+
+const std::string StarTool::prefsPath = "/tools/shapes/star";
+
+StarTool::StarTool() : ToolBase() {
+	this->randomized = 0;
+	this->rounded = 0;
+
+    this->cursor_shape = cursor_star_xpm;
+    this->hot_x = 4;
+    this->hot_y = 4;
+    this->xp = 0;
+    this->yp = 0;
+    this->tolerance = 0;
+    this->within_tolerance = false;
+    this->item_to_select = NULL;
+    //this->tool_url = "/tools/shapes/star";
+
+    this->star = NULL;
+
+    this->magnitude = 5;
+    this->proportion = 0.5;
+    this->isflatsided = false;
+}
+
+void StarTool::finish() {
+    sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), GDK_CURRENT_TIME);
+
+    this->finishItem();
+    this->sel_changed_connection.disconnect();
+
+    ToolBase::finish();
+}
+
+StarTool::~StarTool() {
+    this->enableGrDrag(false);
+
+    this->sel_changed_connection.disconnect();
+
+    delete this->shape_editor;
+    this->shape_editor = NULL;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->star) {
+    	this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ *
+ * @param  selection Should not be NULL.
+ */
+void StarTool::selection_changed(Inkscape::Selection* selection) {
+    g_assert (selection != NULL);
+
+    this->shape_editor->unset_item(SH_KNOTHOLDER);
+    this->shape_editor->set_item(selection->singleItem(), SH_KNOTHOLDER);
+}
+
+void StarTool::setup() {
+	ToolBase::setup();
+
+	sp_event_context_read(this, "magnitude");
+	sp_event_context_read(this, "proportion");
+	sp_event_context_read(this, "isflatsided");
+	sp_event_context_read(this, "rounded");
+	sp_event_context_read(this, "randomized");
+
+	this->shape_editor = new ShapeEditor(this->desktop);
+
+	SPItem *item = sp_desktop_selection(this->desktop)->singleItem();
+	if (item) {
+		this->shape_editor->set_item(item, SH_KNOTHOLDER);
+	}
+
+	Inkscape::Selection *selection = sp_desktop_selection(this->desktop);
+	
+	this->sel_changed_connection.disconnect();
+
+	this->sel_changed_connection = selection->connectChanged(sigc::mem_fun(this, &StarTool::selection_changed));
+
+	Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+	if (prefs->getBool("/tools/shapes/selcue")) {
+		this->enableSelectionCue();
+	}
+
+	if (prefs->getBool("/tools/shapes/gradientdrag")) {
+		this->enableGrDrag();
+	}
+}
+
+void StarTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "magnitude") {
+        this->magnitude = CLAMP(val.getInt(5), 3, 1024);
+    } else if (path == "proportion") {
+        this->proportion = CLAMP(val.getDouble(0.5), 0.01, 2.0);
+    } else if (path == "isflatsided") {
+        this->isflatsided = val.getBool();
+    } else if (path == "rounded") {
+        this->rounded = val.getDouble();
+    } else if (path == "randomized") {
+        this->randomized = val.getDouble();
+    }
+}
+
+bool StarTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    SPDesktop *desktop = this->desktop;
+    Inkscape::Selection *selection = sp_desktop_selection (desktop);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if (event->button.button == 1 && !this->space_panning) {
+            dragging = true;
+
+            this->center = Inkscape::setup_for_drag_start(desktop, this, event);
+
+            /* Snap center */
+            SnapManager &m = desktop->namedview->snap_manager;
+            m.setup(desktop, true);
+            m.freeSnapReturnByRef(this->center, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            m.unSetup();
+
+            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) && !this->space_panning) {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(desktop->w2d(motion_w));
+
+            this->drag(motion_dt, event->motion.state);
+
+            gobble_motion_events(GDK_BUTTON1_MASK);
+
+            ret = TRUE;
+        } else if (!sp_event_context_knot_mouseover(this)) {
+            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:
+        this->xp = this->yp = 0;
+
+        if (event->button.button == 1 && !this->space_panning) {
+            dragging = false;
+
+            sp_event_context_discard_delayed_snap_event(this);
+
+            if (!this->within_tolerance) {
+                // we've been dragging, finish the star
+                this->finishItem();
+            } else if (this->item_to_select) {
+                // no dragging, select clicked item if any
+                if (event->button.state & GDK_SHIFT_MASK) {
+                    selection->toggle(this->item_to_select);
+                } else {
+                    selection->set(this->item_to_select);
+                }
+            } else {
+                // click in an empty space
+                selection->clear();
+            }
+
+            this->item_to_select = NULL;
+            ret = TRUE;
+            sp_canvas_item_ungrab(SP_CANVAS_ITEM (desktop->acetate), event->button.time);
+        }
+        break;
+
+    case GDK_KEY_PRESS:
+        switch (get_group0_keyval(&event->key)) {
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+        case GDK_KEY_Meta_R:
+            sp_event_show_modifier_tip(this->defaultMessageContext(), event,
+                                       _("<b>Ctrl</b>: snap angle; keep rays radial"),
+                                       NULL,
+                                       NULL);
+            break;
+
+        case GDK_KEY_Up:
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Up:
+        case GDK_KEY_KP_Down:
+            // prevent the zoom field from activation
+            if (!MOD__CTRL_ONLY(event))
+                ret = TRUE;
+            break;
+
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                desktop->setToolboxFocusTo ("altx-star");
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+        	if (dragging) {
+        		dragging = false;
+        		sp_event_context_discard_delayed_snap_event(this);
+        		// if drawing, cancel, otherwise pass it up for deselecting
+        		this->cancel();
+        		ret = TRUE;
+        	}
+        	break;
+
+        case GDK_KEY_space:
+            if (dragging) {
+                sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time);
+
+                dragging = false;
+
+                sp_event_context_discard_delayed_snap_event(this);
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, finish the star
+                    this->finishItem();
+                }
+                // do not return true, so that space would work switching to selector
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    case GDK_KEY_RELEASE:
+        switch (get_group0_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+        case GDK_KEY_Meta_R:
+            this->defaultMessageContext()->clear();
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void StarTool::drag(Geom::Point p, guint state)
+{
+    SPDesktop *desktop = this->desktop;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+
+    if (!this->star) {
+        if (Inkscape::have_viable_layer(desktop, this->message_context) == false) {
+            return;
+        }
+
+        // Create object
+        Inkscape::XML::Document *xml_doc = this->desktop->doc()->getReprDoc();
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+        repr->setAttribute("sodipodi:type", "star");
+
+        // Set style
+        sp_desktop_apply_style_tool(desktop, repr, "/tools/shapes/star", false);
+
+        this->star = SP_STAR(desktop->currentLayer()->appendChildRepr(repr));
+
+        Inkscape::GC::release(repr);
+        this->star->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
+        this->star->updateRepr();
+
+        desktop->canvas->forceFullRedrawAfterInterruptions(5);
+    }
+
+    /* Snap corner point with no constraints */
+    SnapManager &m = desktop->namedview->snap_manager;
+
+    m.setup(desktop, true, this->star);
+    Geom::Point pt2g = p;
+    m.freeSnapReturnByRef(pt2g, Inkscape::SNAPSOURCE_NODE_HANDLE);
+    m.unSetup();
+
+    Geom::Point const p0 = desktop->dt2doc(this->center);
+    Geom::Point const p1 = desktop->dt2doc(pt2g);
+
+    double const sides = (gdouble) this->magnitude;
+    Geom::Point const d = p1 - p0;
+    Geom::Coord const r1 = Geom::L2(d);
+    double arg1 = atan2(d);
+
+    if (state & GDK_CONTROL_MASK) {
+        /* Snap angle */
+        arg1 = sp_round(arg1, M_PI / snaps);
+    }
+
+    sp_star_position_set(this->star, this->magnitude, p0, r1, r1 * this->proportion,
+                         arg1, arg1 + M_PI / sides, this->isflatsided, this->rounded, this->randomized);
+
+    /* status text */
+    Inkscape::Util::Quantity q = Inkscape::Util::Quantity(r1, "px");
+    GString *rads = g_string_new(q.string(desktop->namedview->doc_units).c_str());
+    this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                               ( this->isflatsided?
+                                 _("<b>Polygon</b>: radius %s, angle %5g&#176;; with <b>Ctrl</b> to snap angle")
+                                 : _("<b>Star</b>: radius %s, angle %5g&#176;; with <b>Ctrl</b> to snap angle") ),
+                               rads->str, sp_round((arg1) * 180 / M_PI, 0.0001));
+
+    g_string_free(rads, FALSE);
+}
+
+void StarTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->star != NULL) {
+        if (this->star->r[1] == 0) {
+        	// Don't allow the creating of zero sized arc, for example
+        	// when the start and and point snap to the snap grid point
+            this->cancel();
+            return;
+        }
+
+        // Set transform center, so that odd stars rotate correctly
+        // LP #462157
+        this->star->setCenter(this->center);
+        this->star->set_shape();
+        this->star->updateRepr(SP_OBJECT_WRITE_EXT);
+        this->star->doWriteTransform(this->star->getRepr(), this->star->transform, NULL, true);
+
+        desktop->canvas->endForcedFullRedraws();
+
+        sp_desktop_selection(desktop)->set(this->star);
+        DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_CONTEXT_STAR,
+                           _("Create star"));
+
+        this->star = NULL;
+    }
+}
+
+void StarTool::cancel() {
+    sp_desktop_selection(desktop)->clear();
+    sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), 0);
+
+    if (this->star != NULL) {
+        this->star->deleteObject();
+        this->star = NULL;
+    }
+
+    this->within_tolerance = false;
+    this->xp = 0;
+    this->yp = 0;
+    this->item_to_select = NULL;
+
+    desktop->canvas->endForcedFullRedraws();
+
+    DocumentUndo::cancel(sp_desktop_document(desktop));
+}
+
+}
+}
+}
+
+/*
+  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:fileencoding=utf-8:textwidth=99 :