From ebd02787290dac9573c538cae9fe401a893c72bc Mon Sep 17 00:00:00 2001
From: cilix42 <cilix42@users.sourceforge.net>
Date: Mon, 18 Aug 2008 00:42:15 +0000
Subject: [PATCH] Draw limiting bounding box in geometriy tool

---
 src/lpe-tool-context.cpp | 33 +++++++++++++++++++++++++++++++++
 src/lpe-tool-context.h   |  4 ++++
 2 files changed, 37 insertions(+)

diff --git a/src/lpe-tool-context.cpp b/src/lpe-tool-context.cpp
index f9db815bc..f9fc3ad71 100644
--- a/src/lpe-tool-context.cpp
+++ b/src/lpe-tool-context.cpp
@@ -27,6 +27,9 @@
 #include "shape-editor.h"
 #include "selection.h"
 #include "desktop-handles.h"
+#include "document.h"
+#include "display/curve.h"
+#include "display/canvas-bpath.h"
 
 #include "lpe-tool-context.h"
 
@@ -96,6 +99,8 @@ sp_lpetool_context_init(SPLPEToolContext *lc)
     lc->hot_x = 7;
     lc->hot_y = 7;
 
+    lc->canvas_bbox = NULL;
+
     new (&lc->sel_changed_connection) sigc::connection();
 }
 
@@ -105,6 +110,11 @@ sp_lpetool_context_dispose(GObject *object)
     SPLPEToolContext *lc = SP_LPETOOL_CONTEXT(object);
     delete lc->shape_editor;
 
+    if (lc->canvas_bbox) {
+        gtk_object_destroy(GTK_OBJECT(lc->canvas_bbox));
+        lc->canvas_bbox = NULL;
+    }
+
     lc->sel_changed_connection.disconnect();
     lc->sel_changed_connection.~connection();
 
@@ -129,6 +139,8 @@ sp_lpetool_context_setup(SPEventContext *ec)
     //lc->my_nc = new NodeContextCpp(lc->desktop, lc->prefs_repr, lc->key);
     lc->shape_editor = new ShapeEditor(ec->desktop);
 
+    lpetool_context_reset_limiting_bbox(lc);
+
 // TODO temp force:
     ec->enableSelectionCue();
 
@@ -286,6 +298,27 @@ sp_lpetool_context_root_handler(SPEventContext *event_context, GdkEvent *event)
     return ret;
 }
 
+/*
+ * Reads the limiting bounding box from preferences and draws it on the screen
+ */
+// TODO: Note that currently the bbox is not user-settable; we simply use the page borders
+void
+lpetool_context_reset_limiting_bbox(SPLPEToolContext *lc)
+{
+    SPDocument *document = sp_desktop_document(lc->desktop);
+    Geom::Coord w = sp_document_width(document);
+    Geom::Coord h = sp_document_height(document);
+
+    Geom::Point A(0,0);
+    Geom::Point B(w,h);
+
+    Geom::Rect rect(A, B);
+    SPCurve *curve = SPCurve::new_from_rect(rect);
+
+    lc->canvas_bbox = sp_canvas_bpath_new (sp_desktop_controls(lc->desktop), curve);
+    sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(lc->canvas_bbox), 0x0000ffff, 0.8, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT, 5, 5);
+}
+
 /*
   Local Variables:
   mode:c++
diff --git a/src/lpe-tool-context.h b/src/lpe-tool-context.h
index 80906f167..86976442f 100644
--- a/src/lpe-tool-context.h
+++ b/src/lpe-tool-context.h
@@ -41,11 +41,15 @@ class ShapeEditor;
 struct SPLPEToolContext : public SPPenContext {
     ShapeEditor* shape_editor;
 
+    SPCanvasItem *canvas_bbox;
+
     sigc::connection sel_changed_connection;
 };
 
 struct SPLPEToolContextClass : public SPEventContextClass{};
 
+void lpetool_context_reset_limiting_bbox(SPLPEToolContext *lc);
+
 GType sp_lpetool_context_get_type(void);
 
 #endif // SP_LPETOOL_CONTEXT_H_SEEN
-- 
2.30.2