moving trunk for module inkscape

(bzr r1)

1 files changed, 127 insertions, 0 deletions

diff --git a/src/knot.h b/src/knot.h
new file mode 100644
index 000000000..02c0f19ad
--- /dev/null
+++ b/src/knot.h
@@ -0,0 +1,127 @@
+#ifndef __SP_KNOT_H__
+#define __SP_KNOT_H__
+
+/** \file
+ * Declarations for SPKnot: Desktop-bound visual control object.
+ */
+/*
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include <gdk/gdk.h>
+#include <gtk/gtkenums.h>
+#include "display/display-forward.h"
+#include "forward.h"
+#include <libnr/nr-point.h>
+#include "knot-enums.h"
+
+class SPKnot;
+class SPKnotClass;
+
+#define SP_TYPE_KNOT            (sp_knot_get_type())
+#define SP_KNOT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), SP_TYPE_KNOT, SPKnot))
+#define SP_KNOT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass), SP_TYPE_KNOT, SPKnotClass))
+#define SP_IS_KNOT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), SP_TYPE_KNOT))
+#define SP_IS_KNOT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), SP_TYPE_KNOT))
+
+/**
+ * Desktop-bound visual control object.
+ * 
+ * A knot is a draggable object, with callbacks to change something by
+ * dragging it, visuably represented by a canvas item (mostly square).
+ */
+struct SPKnot {
+    GObject object;
+    SPDesktop *desktop;   /**< Desktop we are on. */
+    SPCanvasItem *item;   /**< Our CanvasItem. */
+    guint flags;
+
+    guint size;      /**< Always square. */
+    NR::Point pos;   /**< Our desktop coordinates. */
+    NR::Point grabbed_rel_pos;  /**< Grabbed relative position. */
+    NR::Point drag_origin;      /**< Origin of drag. */
+    GtkAnchorType anchor;    /**< Anchor. */
+
+    SPKnotShapeType shape;   /**< Shape type. */
+    SPKnotModeType mode;
+
+    guint32 fill[SP_KNOT_VISIBLE_STATES];
+    guint32 stroke[SP_KNOT_VISIBLE_STATES];
+    guchar *image[SP_KNOT_VISIBLE_STATES];
+
+    GdkCursor *cursor[SP_KNOT_VISIBLE_STATES];
+
+    GdkCursor *saved_cursor;
+    gpointer pixbuf;
+
+    gchar *tip;
+};
+
+/// The SPKnot vtable.
+struct SPKnotClass {
+    GObjectClass parent_class;
+
+    gint (* event) (SPKnot *knot, GdkEvent *event);
+
+    /*
+     * These are unconditional.
+     */
+
+    void (* clicked) (SPKnot *knot, guint state);
+    void (* doubleclicked) (SPKnot *knot, guint state);
+    void (* grabbed) (SPKnot *knot, guint state);
+    void (* ungrabbed) (SPKnot *knot, guint state);
+    void (* moved) (SPKnot *knot, NR::Point *position, guint state);
+    void (* stamped) (SPKnot *know, guint state);
+
+    /** Request knot to move to absolute position. */
+    bool (* request) (SPKnot *knot, NR::Point *pos, guint state);
+
+    /** Find complex distance from knot to point. */
+    gdouble (* distance) (SPKnot *knot, NR::Point *pos, guint state);
+};
+
+GType sp_knot_get_type();
+
+SPKnot *sp_knot_new(SPDesktop *desktop, gchar const *tip = NULL);
+
+#define SP_KNOT_IS_VISIBLE(k) ((k->flags & SP_KNOT_VISIBLE) != 0)
+#define SP_KNOT_IS_MOSEOVER(k) ((k->flags & SP_KNOT_MOUSEOVER) != 0)
+#define SP_KNOT_IS_DRAGGING(k) ((k->flags & SP_KNOT_DRAGGING) != 0)
+#define SP_KNOT_IS_GRABBED(k) ((k->flags & SP_KNOT_GRABBED) != 0)
+
+void sp_knot_show(SPKnot *knot);
+void sp_knot_hide(SPKnot *knot);
+
+void sp_knot_request_position(SPKnot *knot, NR::Point *pos, guint state);
+gdouble sp_knot_distance(SPKnot *knot, NR::Point *p, guint state);
+
+void sp_knot_start_dragging(SPKnot *knot, NR::Point p, gint x, gint y, guint32 etime);
+
+/** Moves knot and emits "moved" signal. */
+void sp_knot_set_position(SPKnot *knot, NR::Point *p, guint state);
+
+/** Moves knot without any signal. */
+void sp_knot_moveto(SPKnot *knot, NR::Point *p);
+
+NR::Point sp_knot_position(SPKnot const *knot);
+
+
+#endif /* !__SP_KNOT_H__ */
+
+/*
+  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:encoding=utf-8:textwidth=99 :