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114 lines
3.6 KiB
114 lines
3.6 KiB
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* gog-axis.h :
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*
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* Copyright (C) 2003-2004 Jody Goldberg (jody@gnome.org)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#ifndef GOG_AXIS_H
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#define GOG_AXIS_H
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#include <goffice/graph/goffice-graph.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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typedef enum {
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GOG_AXIS_AT_LOW = -1,
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GOG_AXIS_IN_MIDDLE = 0,
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GOG_AXIS_AT_HIGH = 1
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} GogAxisPosition;
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typedef enum {
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AXIS_ELEM_MIN = 0,
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AXIS_ELEM_MAX,
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AXIS_ELEM_MAJOR_TICK,
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AXIS_ELEM_MINOR_TICK,
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AXIS_ELEM_CROSS_POINT,
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AXIS_ELEM_MAX_ENTRY
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} GogAxisElemType;
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typedef enum {
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GOG_AXIS_TICK_NONE,
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GOG_AXIS_TICK_MAJOR,
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GOG_AXIS_TICK_MINOR
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} GogAxisTickTypes;
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typedef struct {
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double position;
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GogAxisTickTypes type;
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char *label;
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} GogAxisTick;
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#define GOG_AXIS_TYPE (gog_axis_get_type ())
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#define GOG_AXIS(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GOG_AXIS_TYPE, GogAxis))
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#define IS_GOG_AXIS(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GOG_AXIS_TYPE))
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GType gog_axis_get_type (void);
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GogAxisType gog_axis_get_atype (GogAxis const *axis);
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GogAxisPosition gog_axis_get_pos (GogAxis const *axis);
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gboolean gog_axis_is_discrete (GogAxis const *axis);
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gboolean gog_axis_get_bounds (GogAxis const *axis,
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double *minima, double *maxima);
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unsigned gog_axis_get_ticks (GogAxis *axis, GogAxisTick **ticks);
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GOData *gog_axis_get_labels (GogAxis const *axis,
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GogPlot **plot_that_labeled_axis);
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double gog_axis_get_entry (GogAxis const *axis, GogAxisElemType i,
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gboolean *user_defined);
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void gog_axis_add_contributor (GogAxis *axis, GogObject *contrib);
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void gog_axis_del_contributor (GogAxis *axis, GogObject *contrib);
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GSList const *gog_axis_contributors (GogAxis *axis);
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void gog_axis_clear_contributors (GogAxis *axis);
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void gog_axis_bound_changed (GogAxis *axis, GogObject *contrib);
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void gog_axis_view_padding_request (GogView *v, GogViewPadding *padding,
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GogViewAllocation *bbox);
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typedef struct _GogAxisMapDesc GogAxisMapDesc;
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typedef struct {
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GogAxis *axis;
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GogAxisMapDesc const *desc;
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gpointer data;
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gboolean is_valid; /* Default to FALSE if desc::init == NULL */
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} GogAxisMap;
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struct _GogAxisMapDesc {
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double (*map) (GogAxisMap *map, double value);
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double (*map_to_canvas) (GogAxisMap *map, double value, gboolean inverted);
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gboolean (*init) (GogAxisMap *map, double offset, double length);
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void (*destroy) (GogAxisMap *map);
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void (*auto_bound) (GogAxis *axis,
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double minimum, double maximum,
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double *bound);
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void (*calc_ticks) (GogAxis *axis,
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gboolean draw_labels);
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char const *name;
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char const *description;
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};
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GogAxisMap* gog_axis_map_new (GogAxis *axis, double offset, double length);
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double gog_axis_map (GogAxisMap *map, double x);
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double gog_axis_map_to_canvas (GogAxisMap *map, double x);
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void gog_axis_map_free (GogAxisMap *map);
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gboolean gog_axis_map_is_valid (GogAxisMap *map);
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G_END_DECLS
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#endif /* GOG_AXIS_H */
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