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/* Dia -- an diagram creation/manipulation program
* Copyright (C) 1998 Alexander Larsson
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#pragma once
#include "diatypes.h"
#include "geometry.h"
#include "color.h"
#include "dia_xml.h"
#include "diacontext.h"
#include "diarenderer.h"
/* NOTE: Add new arrow types at the end, or the enums
will change order leading to file incompatibilities. */
/**
* ArrowType:
* @ARROW_NONE: No arrow
* @ARROW_LINES: {open arrow}
* @ARROW_HOLLOW_TRIANGLE: {blanked arrow}
* @ARROW_FILLED_TRIANGLE: {filled arrow}
* @ARROW_HOLLOW_DIAMOND: outline of a diamond
* @ARROW_FILLED_DIAMOND: filled diamond, no outline
* @ARROW_HALF_HEAD:
* @ARROW_SLASHED_CROSS: Vertical + diagonal line
* @ARROW_FILLED_ELLIPSE:
* @ARROW_HOLLOW_ELLIPSE:
* @ARROW_DOUBLE_HOLLOW_TRIANGLE:
* @ARROW_DOUBLE_FILLED_TRIANGLE:
* @ARROW_UNFILLED_TRIANGLE: {unfilled arrow}
* @ARROW_FILLED_DOT: {filled dot} Ellipse + vertical line
* @ARROW_DIMENSION_ORIGIN: {dimension origin} Ellipse + vert line
* @ARROW_BLANKED_DOT: {blanked dot} Empty ellipse + vert line
* @ARROW_FILLED_BOX: {filled box} Box + vertical line
* @ARROW_BLANKED_BOX: {blanked box} Box + vertical line
* @ARROW_SLASH_ARROW: {slash arrow} Vertical + diagonal line
* @ARROW_INTEGRAL_SYMBOL: {integral symbol} Vertical + integral
* @ARROW_CROW_FOOT:
* @ARROW_CROSS: Vertical line
* @ARROW_FILLED_CONCAVE:
* @ARROW_BLANKED_CONCAVE:
* @ARROW_ROUNDED:
* @ARROW_HALF_DIAMOND: ---<
* @ARROW_OPEN_ROUNDED: ---c
* @ARROW_FILLED_DOT_N_TRIANGLE: ---|>o
* @ARROW_ONE_OR_MANY: ER-model, 1 or many
* @ARROW_NONE_OR_MANY: ER-model, 0 or many
* @ARROW_ONE_OR_NONE: ER-model, 1 or 0
* @ARROW_ONE_EXACTLY: ER-model, exactly one
* @ARROW_BACKSLASH: -\----
* @ARROW_THREE_DOTS:
* @MAX_ARROW_TYPE: This isn't an arrow, just marks the end
*
* Types of #Arrow
*
* Comments in curly braces mention ISO 10303-AP201 names
*/
typedef enum {
ARROW_NONE = 0, /*!< No arrow */
ARROW_LINES, /*!< {open arrow} */
ARROW_HOLLOW_TRIANGLE, /*!< {blanked arrow} */
ARROW_FILLED_TRIANGLE, /*!< {filled arrow} */
ARROW_HOLLOW_DIAMOND, /*!< outline of a diamond */
ARROW_FILLED_DIAMOND, /*!< filled diamond, no outline */
ARROW_HALF_HEAD,
ARROW_SLASHED_CROSS, /*!< Vertical + diagonal line */
ARROW_FILLED_ELLIPSE,
ARROW_HOLLOW_ELLIPSE,
ARROW_DOUBLE_HOLLOW_TRIANGLE,
ARROW_DOUBLE_FILLED_TRIANGLE,
ARROW_UNFILLED_TRIANGLE, /*!< {unfilled arrow} */
ARROW_FILLED_DOT, /*!< {filled dot} Ellipse + vertical line */
ARROW_DIMENSION_ORIGIN, /*!< {dimension origin} Ellipse + vert line */
ARROW_BLANKED_DOT, /*!< {blanked dot} Empty ellipse + vert line */
ARROW_FILLED_BOX, /* {filled box} Box + vertical line */
ARROW_BLANKED_BOX, /* {blanked box} Box + vertical line */
ARROW_SLASH_ARROW, /* {slash arrow} Vertical + diagonal line*/
ARROW_INTEGRAL_SYMBOL, /* {integral symbol} Vertical + integral */
ARROW_CROW_FOOT,
ARROW_CROSS, /* Vertical line */
ARROW_FILLED_CONCAVE,
ARROW_BLANKED_CONCAVE,
ARROW_ROUNDED,
ARROW_HALF_DIAMOND, /* ---< */
ARROW_OPEN_ROUNDED, /* ---c */
ARROW_FILLED_DOT_N_TRIANGLE, /* ---|>o */
ARROW_ONE_OR_MANY, /* ER-model: 1 or many*/
ARROW_NONE_OR_MANY, /* ER-model: 0 or many*/
ARROW_ONE_OR_NONE, /* ER-model: 1 or 0 */
ARROW_ONE_EXACTLY, /* ER-model: exactly one*/
ARROW_BACKSLASH, /* -\---- */
ARROW_THREE_DOTS,
MAX_ARROW_TYPE /* No arrow heads may be defined beyond here. */
} ArrowType;
/**
* DEFAULT_ARROW_SIZE:
*
* The number of centimeters long and wide an arrow starts with by default.
* This can be changed without breaking old diagrams, as the arrow width
* is stored in there.
* Note: Currently, many places have this number hardcoded.
* find . -name \*.[ch] | xargs grep \\.8
*/
#define DEFAULT_ARROW_SIZE 0.5
/* Originally in widgets.h - Do we need these? */
#define DEFAULT_ARROW ARROW_NONE
#define DEFAULT_ARROW_LENGTH DEFAULT_ARROW_SIZE
#define DEFAULT_ARROW_WIDTH DEFAULT_ARROW_SIZE
/**
* MIN_ARROW_DIMENSION:
*
* The minimum width or length of an arrowhead. This to avoid borderline
* cases that break trig functions, as seen in bug # 144394
*/
#define MIN_ARROW_DIMENSION 0.001
/**
* Arrow:
* @type: kind of arrow
* @length: length of the arrow
* @width: width of the arrow
*
* Definition of line ends
*/
struct _Arrow {
ArrowType type;
real length;
real width;
};
#define DIA_TYPE_ARROW (dia_arrow_get_type ())
Arrow *dia_arrow_copy (Arrow *self);
void dia_arrow_free (Arrow *self);
GType dia_arrow_get_type (void);
void dia_arrow_draw (Arrow *self,
DiaRenderer *renderer,
Point *to,
Point *from,
double line_width,
Color *fg_color,
Color *bg_color);
void arrow_bbox (const Arrow *self,
real line_width,
const Point *to,
const Point *from,
DiaRectangle *rect);
void calculate_arrow_point (const Arrow *arrow,
const Point *to,
const Point *from,
Point *move_arrow,
Point *move_line,
real linewidth);
void dia_arrow_save (Arrow *arrow,
ObjectNode obj_node,
char *type_attribute,
char *length_attribute,
char *width_attribute,
DiaContext *ctx);
void dia_arrow_load (Arrow *arrow,
ObjectNode obj_node,
char *type_attribute,
char *length_attribute,
char *width_attribute,
DiaContext *ctx);
ArrowType arrow_type_from_name (const gchar *name);
gint arrow_index_from_type (ArrowType atype);
ArrowType arrow_type_from_index (gint index);
const gchar *arrow_get_name_from_type (ArrowType type);
GList *get_arrow_names (void);
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