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authorMatthew Barnes <mbarnes@redhat.com>2010-06-14 06:37:27 +0800
committerMatthew Barnes <mbarnes@redhat.com>2010-06-14 09:31:58 +0800
commite6972011f01eab9f8d0a4584f32ee1e2a00f3231 (patch)
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Embed libart_lgpl and libgnomecanvas.
Both of these modules are deprecated and going away in GNOME 3 but we still rely heavily on them for GnomeCalendar and ETable. So, welcome to the island of unwanted libraries...
Diffstat (limited to 'libgnomecanvas/gnome-canvas-line.h')
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+/*
+ * Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
+ * All rights reserved.
+ *
+ * This file is part of the Gnome Library.
+ *
+ * The Gnome Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Gnome Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the Gnome Library; see the file COPYING.LIB. If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+/*
+ @NOTATION@
+ */
+
+/* Line/curve item type for GnomeCanvas widget
+ *
+ * GnomeCanvas is basically a port of the Tk toolkit's most excellent canvas widget. Tk is
+ * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
+ *
+ *
+ * Author: Federico Mena <federico@nuclecu.unam.mx>
+ */
+
+#ifndef GNOME_CANVAS_LINE_H
+#define GNOME_CANVAS_LINE_H
+
+
+#include <libgnomecanvas/gnome-canvas.h>
+
+
+G_BEGIN_DECLS
+
+
+/* Line item for the canvas. This is a polyline with configurable width, cap/join styles, and arrowheads.
+ * If arrowheads are enabled, then three values are used to specify their shape:
+ *
+ * arrow_shape_a: Distance from tip of arrowhead to the center point.
+ * arrow_shape_b: Distance from tip of arrowhead to trailing point, measured along the shaft.
+ * arrow_shape_c: Distance of trailing point from outside edge of shaft.
+ *
+ * The following object arguments are available:
+ *
+ * name type read/write description
+ * ------------------------------------------------------------------------------------------
+ * points GnomeCanvasPoints* RW Pointer to a GnomeCanvasPoints structure.
+ * This can be created by a call to
+ * gnome_canvas_points_new() (in gnome-canvas-util.h).
+ * X coordinates are in the even indices of the
+ * points->coords array, Y coordinates are in
+ * the odd indices.
+ * fill_color string W X color specification for line
+ * fill_color_gdk GdkColor* RW Pointer to an allocated GdkColor
+ * fill_stipple GdkBitmap* RW Stipple pattern for the line
+ * width_pixels uint R Width of the line in pixels. The line width
+ * will not be scaled when the canvas zoom factor changes.
+ * width_units double R Width of the line in canvas units. The line width
+ * will be scaled when the canvas zoom factor changes.
+ * cap_style GdkCapStyle RW Cap ("endpoint") style for the line.
+ * join_style GdkJoinStyle RW Join ("vertex") style for the line.
+ * line_style GdkLineStyle RW Line dash style
+ * first_arrowhead boolean RW Specifies whether to draw an arrowhead on the
+ * first point of the line.
+ * last_arrowhead boolean RW Specifies whether to draw an arrowhead on the
+ * last point of the line.
+ * smooth boolean RW Specifies whether to smooth the line using
+ * parabolic splines.
+ * spline_steps uint RW Specifies the number of steps to use when rendering curves.
+ * arrow_shape_a double RW First arrow shape specifier.
+ * arrow_shape_b double RW Second arrow shape specifier.
+ * arrow_shape_c double RW Third arrow shape specifier.
+ */
+
+
+#define GNOME_TYPE_CANVAS_LINE (gnome_canvas_line_get_type ())
+#define GNOME_CANVAS_LINE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GNOME_TYPE_CANVAS_LINE, GnomeCanvasLine))
+#define GNOME_CANVAS_LINE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GNOME_TYPE_CANVAS_LINE, GnomeCanvasLineClass))
+#define GNOME_IS_CANVAS_LINE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GNOME_TYPE_CANVAS_LINE))
+#define GNOME_IS_CANVAS_LINE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GNOME_TYPE_CANVAS_LINE))
+#define GNOME_CANVAS_LINE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GNOME_TYPE_CANVAS_LINE, GnomeCanvasLineClass))
+
+
+typedef struct _GnomeCanvasLine GnomeCanvasLine;
+typedef struct _GnomeCanvasLineClass GnomeCanvasLineClass;
+
+struct _GnomeCanvasLine {
+ GnomeCanvasItem item;
+
+ double *coords; /* Array of coordinates for the line's points. X coords are in the
+ * even indices, Y coords are in the odd indices. If the line has
+ * arrowheads then the first and last points have been adjusted to
+ * refer to the necks of the arrowheads rather than their tips. The
+ * actual endpoints are stored in the first_arrow and last_arrow
+ * arrays, if they exist.
+ */
+
+ double *first_coords; /* Array of points describing polygon for the first arrowhead */
+ double *last_coords; /* Array of points describing polygon for the last arrowhead */
+
+ GdkGC *gc; /* GC for drawing line */
+
+ GdkBitmap *stipple; /* Stipple pattern */
+
+ ArtSVP *fill_svp; /* The SVP for the outline shape */ /*AA*/
+ ArtSVP *first_svp; /* The SVP for the first arrow */ /*AA*/
+ ArtSVP *last_svp; /* The SVP for the last arrow */ /*AA*/
+
+ double width; /* Width of the line */
+
+ double shape_a; /* Distance from tip of arrowhead to center */
+ double shape_b; /* Distance from tip of arrowhead to trailing point, measured along shaft */
+ double shape_c; /* Distance of trailing points from outside edge of shaft */
+
+ GdkCapStyle cap; /* Cap style for line */
+ GdkJoinStyle join; /* Join style for line */
+ GdkLineStyle line_style;/* Style for the line */
+
+ gulong fill_pixel; /* Color for line */
+
+ guint32 fill_rgba; /* RGBA color for outline */ /*AA*/
+
+ int num_points; /* Number of points in the line */
+ guint fill_color; /* Fill color, RGBA */
+
+ int spline_steps; /* Number of steps in each spline segment */
+
+ guint width_pixels : 1; /* Is the width specified in pixels or units? */
+ guint first_arrow : 1; /* Draw first arrowhead? */
+ guint last_arrow : 1; /* Draw last arrowhead? */
+ guint smooth : 1; /* Smooth line (with parabolic splines)? */
+};
+
+struct _GnomeCanvasLineClass {
+ GnomeCanvasItemClass parent_class;
+};
+
+
+/* Standard Gtk function */
+GType gnome_canvas_line_get_type (void) G_GNUC_CONST;
+
+
+G_END_DECLS
+
+#endif