1 files changed, 86 insertions, 0 deletions
diff --git a/src/ui/draw-anchor.cpp b/src/ui/draw-anchor.cpp
new file mode 100644
index 0000000..3daf4a3
--- /dev/null
+++ b/src/ui/draw-anchor.cpp
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * Anchors implementation.
+ */
+
+/*
+ * Authors:
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ * Copyright (C) 2004 Monash University
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+
+#include "ui/draw-anchor.h"
+#include "ui/tools/tool-base.h"
+#include "ui/tools/lpe-tool.h"
+
+#include "display/control/canvas-item-ctrl.h"
+#include "display/curve.h"
+
+const guint32 FILL_COLOR_NORMAL    = 0xffffff7f;
+const guint32 FILL_COLOR_MOUSEOVER = 0xff0000ff;
+
+/**
+ * Creates an anchor object and initializes it.
+ */
+SPDrawAnchor::SPDrawAnchor(Inkscape::UI::Tools::FreehandBase *dc, SPCurve *curve, bool start, Geom::Point delta)
+    : dc(dc), curve(curve->ref()), start(start), active(FALSE), dp(delta),
+      ctrl(
+        new Inkscape::CanvasItemCtrl(
+          dc->getDesktop()->getCanvasControls(),
+          Inkscape::CANVAS_ITEM_CTRL_TYPE_ANCHOR
+        )
+      )
+{
+    ctrl->set_name("CanvasItemCtrl:DrawAnchor");
+    ctrl->set_fill(FILL_COLOR_NORMAL);
+    ctrl->set_position(delta);
+    ctrl->set_pickable(false); // We do our own checking. (TODO: Should be fixed!)
+}
+
+SPDrawAnchor::~SPDrawAnchor()
+{
+    if (ctrl) {
+        delete (ctrl);
+    }
+}
+
+/**
+ * Test if point is near anchor, if so fill anchor on canvas and return
+ * pointer to it or NULL.
+ */
+SPDrawAnchor *SPDrawAnchor::anchorTest(Geom::Point w, bool activate)
+{
+    if ( activate && this->ctrl->contains(w)) {
+        
+        if (!this->active) {
+            this->ctrl->set_size_extra(4);
+            this->ctrl->set_fill(FILL_COLOR_MOUSEOVER);
+            this->active = TRUE;
+        }
+        return this;
+    }
+
+    if (this->active) {
+        this->ctrl->set_size_extra(0);
+        this->ctrl->set_fill(FILL_COLOR_NORMAL);
+        this->active = FALSE;
+    }
+
+    return nullptr;
+}
+
+/*
+  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 :