mirror of https://github.com/GNOME/gimp.git
206 lines
7.9 KiB
C
206 lines
7.9 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_SIZE_ENTRY_H__
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#define __GIMP_SIZE_ENTRY_H__
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#include <gtk/gtk.h>
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#include "gimpunit.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GIMP_TYPE_SIZE_ENTRY (gimp_size_entry_get_type ())
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#define GIMP_SIZE_ENTRY(obj) (GTK_CHECK_CAST ((obj), GIMP_TYPE_SIZE_ENTRY, GimpSizeEntry))
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#define GIMP_SIZE_ENTRY_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_SIZE_ENTRY, GimpSizeEntryClass))
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#define GIMP_IS_SIZE_ENTRY(obj) (GTK_CHECK_TYPE (obj, GIMP_TYPE_SIZE_ENTRY))
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#define GIMP_IS_SIZE_ENTRY_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_SIZE_ENTRY))
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typedef struct _GimpSizeEntry GimpSizeEntry;
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typedef struct _GimpSizeEntryClass GimpSizeEntryClass;
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typedef enum
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{
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GIMP_SIZE_ENTRY_UPDATE_NONE = 0,
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GIMP_SIZE_ENTRY_UPDATE_SIZE = 1,
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GIMP_SIZE_ENTRY_UPDATE_RESOLUTION = 2
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} GimpSizeEntryUP;
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typedef struct _GimpSizeEntryField GimpSizeEntryField;
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struct _GimpSizeEntry
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{
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GtkTable table;
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GSList *fields;
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gint number_of_fields;
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GtkWidget *unitmenu;
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GUnit unit;
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gboolean menu_show_pixels;
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gboolean menu_show_percent;
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gboolean show_refval;
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GimpSizeEntryUP update_policy;
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};
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struct _GimpSizeEntryClass
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{
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GtkTableClass parent_class;
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void (* value_changed) (GimpSizeEntry *gse);
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void (* refval_changed) (GimpSizeEntry *gse);
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void (* unit_changed) (GimpSizeEntry *gse);
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};
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GtkType gimp_size_entry_get_type (void);
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/* creates a new GimpSizeEntry widget
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* number_of_fields -- how many spinbuttons to show
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* unit -- unit to show initially
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* unit_format -- printf-like unit-format (see GimpUnitMenu)
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* menu_show_pixels -- should the unit menu contain 'pixels'
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* this parameter is ignored if you select an update_policy
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* show_refval -- TRUE if you want the extra 'reference value' row
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* spinbutton_usize -- the minimal horizontal size the spinbuttons will have
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* update_policy -- how calculations should be performed
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* GIMP_SIZE_ENTRY_UPDATE_NONE --> no calculations
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* GIMP_SIZE_ENTRY_UPDATE_SIZE --> consider the values to
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* be distances. The reference value equals to pixels
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* GIMP_SIZE_ENTRY_UPDATE_RESOLUTION --> consider the values
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* to be resolutions. The reference value equals to dpi
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*
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* to have all automatic calculations performed correctly, set up the
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* widget in the following order:
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* 1. gimp_size_entry_new
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* 2. (for each additional input field) gimp_size_entry_add_field
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* 3. gimp_size_entry_set_unit
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* for each input field:
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* 4. gimp_size_entry_set_resolution
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* 5. gimp_size_entry_set_value_boundaries (or _set_refval_boundaries)
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* 6. gimp_size_entry_set_size
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* 7. gimp_size_entry_set_value (or _set_refval)
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*
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* the newly created GimpSizeEntry table will have an empty border
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* of one cell width on each side plus an empty column left of the
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* unit menu to allow the caller to add labels
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*/
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GtkWidget* gimp_size_entry_new (gint number_of_fields,
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GUnit unit,
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gchar *unit_format,
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gboolean menu_show_pixels,
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gboolean menu_show_percent,
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gboolean show_refval,
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gint spinbutton_usize,
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GimpSizeEntryUP update_policy);
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/* add a field to the sizeentry
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* if show_refval if FALSE, then the refval pointers will be ignored
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*
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* the new field will have the index 0
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*/
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void gimp_size_entry_add_field (GimpSizeEntry *gse,
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GtkSpinButton *value_spinbutton,
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GtkSpinButton *refval_spinbutton);
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/* this one is just a convenience function if you want to add labels
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* to the empty cells of the widget
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*/
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void gimp_size_entry_attach_label (GimpSizeEntry *gse,
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gchar *text,
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gint row,
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gint column,
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gfloat alignment);
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/* this one sets the resolution (in dpi)
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*
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* does nothing if update_policy != GIMP_SIZE_ENTRY_UPDATE_SIZE
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*
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* keep_size is a boolean value. If TRUE, the size in pixels will stay
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* the same, otherwise the size in units will stay the same.
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*/
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void gimp_size_entry_set_resolution (GimpSizeEntry *gse,
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gint field,
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gdouble resolution,
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guint keep_size);
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/* this one sets the values (in pixels) which will be treated as
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* 0% and 100% when we want "percent" in the unit menu
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*
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* does nothing if update_policy != GIMP_SIZE_ENTRY_UPDATE_SIZE
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*/
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void gimp_size_entry_set_size (GimpSizeEntry *gse,
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gint field,
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gdouble lower,
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gdouble upper);
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/* these functions set/return the value in the units the user selected
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* note that in some cases where the caller chooses not to have the
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* reference value row and the user selected the reference unit
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* the both values 'value' and 'refval' will be the same
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*/
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void gimp_size_entry_set_value_boundaries (GimpSizeEntry *gse,
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gint field,
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gdouble lower,
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gdouble upper);
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gdouble gimp_size_entry_get_value (GimpSizeEntry *gse,
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gint field);
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void gimp_size_entry_set_value (GimpSizeEntry *gse,
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gint field,
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gdouble value);
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/* these functions set/return the value in the 'reference unit' for the
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* current update policy
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* for GIMP_SIZE_ENTRY_UPDATE_SIZE it's the value in pixels
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* for GIMP_SIZE_ENTRY_UPDATE_RESOLUTION it's the resolution in dpi
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* for GIMP_SIZE_ENTRY_UPDATE_NONE it's up to the caller as he has to
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* provide a correct value<->refval
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* mapping
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*/
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void gimp_size_entry_set_refval_boundaries (GimpSizeEntry *gse,
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gint field,
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gdouble lower,
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gdouble upper);
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void gimp_size_entry_set_refval_digits (GimpSizeEntry *gse,
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gint field,
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gint digits);
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gdouble gimp_size_entry_get_refval (GimpSizeEntry *gse,
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gint field);
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void gimp_size_entry_set_refval (GimpSizeEntry *gse,
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gint field,
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gdouble refval);
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/* these functions set/return the currently used unit
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* note that for GIMP_SIZE_ENTRY_UPDATE_SIZE a value of UNIT_PIXEL
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* will be silently ignored if we have the extra refvalue line
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*/
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GUnit gimp_size_entry_get_unit (GimpSizeEntry *gse);
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void gimp_size_entry_set_unit (GimpSizeEntry *gse,
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GUnit unit);
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/* this makes the first spinbutton grab the focus
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*/
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void gimp_size_entry_grab_focus (GimpSizeEntry *gse);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GIMP_SIZE_ENTRY_H__ */
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