git.sur5r.net Git - glabels/blob - src/object-editor-position-page.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
   2
   3 /*
   4  *  (GLABELS) Label and Business Card Creation program for GNOME
   5  *
   6  *  object-editor.c:  object properties editor module
   7  *
   8  *  Copyright (C) 2003  Jim Evins <evins@snaught.com>.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24 #include <config.h>
  25
  26 #include "object-editor.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtklabel.h>
  30 #include <gtk/gtkspinbutton.h>
  31 #include <math.h>
  32
  33 #include "prefs.h"
  34
  35 #include "object-editor-private.h"
  36
  37 #include "debug.h"
  38
  39 /*===========================================*/
  40 /* Private macros                            */
  41 /*===========================================*/
  42
  43 /*===========================================*/
  44 /* Private data types                        */
  45 /*===========================================*/
  46
  47 /*===========================================*/
  48 /* Private globals                           */
  49 /*===========================================*/
  50
  51 /*===========================================*/
  52 /* Local function prototypes                 */
  53 /*===========================================*/
  54
  55
  56 /*--------------------------------------------------------------------------*/
  57 /* PRIVATE.  Prepare position page.                                         */
  58 /*--------------------------------------------------------------------------*/
  59 void
  60 gl_object_editor_prepare_position_page (glObjectEditor *editor)
  61 {
  62         const gchar  *units_string;
  63         gdouble       climb_rate;
  64         gint          digits;
  65
  66         gl_debug (DEBUG_EDITOR, "START");
  67
  68         /* Extract widgets from XML tree. */
  69         editor->priv->pos_page_vbox = glade_xml_get_widget (editor->priv->gui,
  70                                                               "pos_page_vbox");
  71         editor->priv->pos_x_spin    = glade_xml_get_widget (editor->priv->gui,
  72                                                               "pos_x_spin");
  73         editor->priv->pos_y_spin    = glade_xml_get_widget (editor->priv->gui,
  74                                                               "pos_y_spin");
  75         editor->priv->pos_x_units_label = glade_xml_get_widget (editor->priv->gui,
  76                                                                   "pos_x_units_label");
  77         editor->priv->pos_y_units_label = glade_xml_get_widget (editor->priv->gui,
  78                                                                   "pos_y_units_label");
  79
  80         /* Get configuration information */
  81         units_string = gl_prefs_get_units_string ();
  82         editor->priv->units_per_point = gl_prefs_get_units_per_point ();
  83         climb_rate = gl_prefs_get_units_step_size ();
  84         digits = gl_prefs_get_units_precision ();
  85
  86         /* Modify widgets based on configuration */
  87         gtk_spin_button_set_digits (GTK_SPIN_BUTTON(editor->priv->pos_x_spin), digits);
  88         gtk_spin_button_set_increments (GTK_SPIN_BUTTON(editor->priv->pos_x_spin),
  89                                         climb_rate, 10.0*climb_rate);
  90         gtk_label_set_text (GTK_LABEL(editor->priv->pos_x_units_label), units_string);
  91         gtk_spin_button_set_digits (GTK_SPIN_BUTTON(editor->priv->pos_y_spin), digits);
  92         gtk_spin_button_set_increments (GTK_SPIN_BUTTON(editor->priv->pos_y_spin),
  93                                         climb_rate, 10.0*climb_rate);
  94         gtk_label_set_text (GTK_LABEL(editor->priv->pos_y_units_label), units_string);
  95
  96         /* Un-hide */
  97         gtk_widget_show_all (editor->priv->pos_page_vbox);
  98
  99         /* Connect signals */
 100         g_signal_connect_swapped (G_OBJECT (editor->priv->pos_x_spin),
 101                                   "changed",
 102                                   G_CALLBACK (gl_object_editor_changed_cb),
 103                                   G_OBJECT (editor));
 104         g_signal_connect_swapped (G_OBJECT (editor->priv->pos_y_spin),
 105                                   "changed",
 106                                   G_CALLBACK (gl_object_editor_changed_cb),
 107                                   G_OBJECT (editor));
 108
 109         gl_debug (DEBUG_EDITOR, "END");
 110 }
 111
 112 /*****************************************************************************/
 113 /* Set position.                                                             */
 114 /*****************************************************************************/
 115 void
 116 gl_object_editor_set_position (glObjectEditor      *editor,
 117                                  gdouble                x,
 118                                  gdouble                y)
 119 {
 120         gl_debug (DEBUG_EDITOR, "START");
 121
 122         editor->priv->stop_signals = TRUE;
 123
 124         /* save a copy in internal units */
 125         editor->priv->x = x;
 126         editor->priv->y = y;
 127
 128         /* convert internal units to displayed units */
 129         gl_debug (DEBUG_EDITOR, "internal x,y = %g, %g", x, y);
 130         x *= editor->priv->units_per_point;
 131         y *= editor->priv->units_per_point;
 132         gl_debug (DEBUG_EDITOR, "display x,y = %g, %g", x, y);
 133
 134         /* Set widget values */
 135         gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->priv->pos_x_spin), x);
 136         gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->priv->pos_y_spin), y);
 137
 138         editor->priv->stop_signals = FALSE;
 139
 140         gl_debug (DEBUG_EDITOR, "END");
 141 }
 142
 143 /*****************************************************************************/
 144 /* Set maximum position.                                                     */
 145 /*****************************************************************************/
 146 void
 147 gl_object_editor_set_max_position (glObjectEditor      *editor,
 148                                      gdouble                x_max,
 149                                      gdouble                y_max)
 150 {
 151         gdouble tmp;
 152
 153         gl_debug (DEBUG_EDITOR, "START");
 154
 155         editor->priv->stop_signals = TRUE;
 156
 157         /* save a copy in internal units */
 158         editor->priv->x_max = x_max;
 159         editor->priv->y_max = y_max;
 160
 161         /* convert internal units to displayed units */
 162         gl_debug (DEBUG_EDITOR, "internal x_max,y_max = %g, %g", x_max, y_max);
 163         x_max *= editor->priv->units_per_point;
 164         y_max *= editor->priv->units_per_point;
 165         gl_debug (DEBUG_EDITOR, "display x_max,y_max = %g, %g", x_max, y_max);
 166
 167         /* Set widget values */
 168         tmp = gtk_spin_button_get_value (GTK_SPIN_BUTTON (editor->priv->pos_x_spin));
 169         gtk_spin_button_set_range (GTK_SPIN_BUTTON (editor->priv->pos_x_spin),
 170                                    -x_max, 2.0*x_max);
 171         gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->priv->pos_x_spin), tmp);
 172         tmp = gtk_spin_button_get_value (GTK_SPIN_BUTTON (editor->priv->pos_y_spin));
 173         gtk_spin_button_set_range (GTK_SPIN_BUTTON (editor->priv->pos_y_spin),
 174                                    -y_max, 2.0*y_max);
 175         gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->priv->pos_y_spin), tmp);
 176
 177         editor->priv->stop_signals = FALSE;
 178
 179         gl_debug (DEBUG_EDITOR, "END");
 180 }
 181
 182 /*****************************************************************************/
 183 /* Query position.                                                           */
 184 /*****************************************************************************/
 185 void
 186 gl_object_editor_get_position (glObjectEditor      *editor,
 187                                  gdouble               *x,
 188                                  gdouble               *y)
 189 {
 190         gl_debug (DEBUG_EDITOR, "START");
 191
 192         /* Get values from widgets */
 193         *x = gtk_spin_button_get_value (GTK_SPIN_BUTTON (editor->priv->pos_x_spin));
 194         *y = gtk_spin_button_get_value (GTK_SPIN_BUTTON (editor->priv->pos_y_spin));
 195
 196         /* convert everything back to our internal units (points) */
 197         *x /= editor->priv->units_per_point;
 198         *y /= editor->priv->units_per_point;
 199
 200         /* save a copy in internal units */
 201         editor->priv->x = *x;
 202         editor->priv->y = *y;
 203
 204         gl_debug (DEBUG_EDITOR, "END");
 205 }
 206
 207 /*****************************************************************************/
 208 /* PRIVATE. Prefs changed callback.  Update units related items.            */
 209 /*****************************************************************************/
 210 void
 211 position_prefs_changed_cb (glObjectEditor *editor)
 212 {
 213         const gchar  *units_string;
 214         gdouble       climb_rate;
 215         gint          digits;
 216
 217         gl_debug (DEBUG_EDITOR, "START");
 218
 219         /* Get new configuration information */
 220         units_string = gl_prefs_get_units_string ();
 221         editor->priv->units_per_point = gl_prefs_get_units_per_point ();
 222         climb_rate = gl_prefs_get_units_step_size ();
 223         digits = gl_prefs_get_units_precision ();
 224
 225         /* Update characteristics of x_spin/y_spin */
 226         editor->priv->stop_signals = TRUE;
 227         gtk_spin_button_set_digits (GTK_SPIN_BUTTON(editor->priv->pos_x_spin),
 228                                     digits);
 229         gtk_spin_button_set_digits (GTK_SPIN_BUTTON(editor->priv->pos_y_spin),
 230                                     digits);
 231         gtk_spin_button_set_increments (GTK_SPIN_BUTTON(editor->priv->pos_x_spin),
 232                                         climb_rate, 10.0*climb_rate);
 233         gtk_spin_button_set_increments (GTK_SPIN_BUTTON(editor->priv->pos_y_spin),
 234                                         climb_rate, 10.0*climb_rate);
 235         editor->priv->stop_signals = FALSE;
 236
 237         /* Update units_labels */
 238         gtk_label_set_text (GTK_LABEL(editor->priv->pos_x_units_label),
 239                             units_string);
 240         gtk_label_set_text (GTK_LABEL(editor->priv->pos_y_units_label),
 241                             units_string);
 242
 243         /* Update values of x_spin/y_spin */
 244         gl_object_editor_set_position (editor,
 245                                        editor->priv->x,
 246                                        editor->priv->y);
 247         gl_object_editor_set_max_position (editor,
 248                                            editor->priv->x_max,
 249                                            editor->priv->y_max);
 250
 251         gl_debug (DEBUG_EDITOR, "END");
 252 }
 253