resolution-calibrate-dialog.c 9.21 KB
Newer Older
Sven Neumann's avatar
Sven Neumann committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * 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.
 */
Sven Neumann's avatar
Sven Neumann committed
18

Sven Neumann's avatar
Sven Neumann committed
19
20
#include "config.h"

Sven Neumann's avatar
Sven Neumann committed
21
22
23
24
#include <gtk/gtk.h>

#include "apptypes.h"

Sven Neumann's avatar
Sven Neumann committed
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
#include "appenv.h"
#include "gdisplay_ops.h"
#include "gimprc.h"
#include "gimpui.h"
#include "resolution_calibrate.h"
#include "unitrc.h"

#include "libgimp/gimpenv.h"
#include "libgimp/gimplimits.h"
#include "libgimp/gimpmath.h"

#include "libgimp/gimpintl.h"

#define SET_STYLE(widget, style)  if (style) gtk_widget_set_style (widget, style)

static GtkWidget *calibrate_entry = NULL;
static gdouble    calibrate_xres  = 1.0;
static gdouble    calibrate_yres  = 1.0;
static gint       ruler_width     = 1;
static gint       ruler_height    = 1;

static void
resolution_calibrate_ok (GtkWidget *button,
			 gpointer   data)
{
  GtkWidget *resolution_entry;
  GtkWidget *chain_button;
  gdouble x, y;

  resolution_entry = gtk_object_get_user_data (GTK_OBJECT (data));

  x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (calibrate_entry), 0);
  y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (calibrate_entry), 1);

  calibrate_xres = (gdouble)ruler_width  * calibrate_xres / x;
  calibrate_yres = (gdouble)ruler_height * calibrate_yres / y;
  
  chain_button = gtk_object_get_data (GTK_OBJECT (resolution_entry), "chain_button");
  if (chain_button && 
      ABS (x -y) > GIMP_MIN_RESOLUTION)
    gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), FALSE);

  gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (resolution_entry), 0, calibrate_xres);
  gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (resolution_entry), 1, calibrate_yres);

  gtk_widget_destroy (GTK_WIDGET (data));
}

/**
 * resolution_calibrate_dialog:
 * @resolution_entry: a GimpSizeEntry to connect the dialog to
 * @dialog_style: a GtkStyle for the main dialog (used by the user_installation_dialog)
 * @ruler_style: a GtkStyle for the rulers and the entry area (used by the 
 *               user_installation_dialog)
 * @expose_callback: an "expose_event" handler used by the user_installation_dialog
 * 
 * Displays a dialog that allows the user to interactively determine her monitor
 * resolution. This dialog runs it's own GTK main loop and is connected to a 
 * GimpSizeEntry handling the resolution to be set. The style and callback parameters
 * are supposed to be only used by the user_installation_dialog.
 */
void
resolution_calibrate_dialog (GtkWidget     *resolution_entry,
			     GtkStyle      *dialog_style,
			     GtkStyle      *ruler_style,
			     GtkSignalFunc  expose_callback)
{
  GtkWidget *dialog;
  GtkWidget *table;
  GtkWidget *ebox;
  GtkWidget *vbox;
  GtkWidget *hbox;
  GtkWidget *darea;
  GtkWidget *ruler;
  GtkWidget *label;
  GList     *list;

  g_return_if_fail (GIMP_IS_SIZE_ENTRY (resolution_entry));
  
  /*  this dialog can only exist once  */
  if (calibrate_entry)
    return;  
  
  dialog = gimp_dialog_new (_("Calibrate Monitor Resolution"),
			    "calibrate_resolution",
			    NULL, NULL,
			    GTK_WIN_POS_CENTER,
			    FALSE, FALSE, FALSE,

			    _("OK"), resolution_calibrate_ok,
			    NULL, NULL, NULL, TRUE, FALSE,
			    _("Cancel"), gtk_widget_destroy,
			    NULL, 1, NULL, FALSE, TRUE,

			    NULL);

  gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
		      GTK_SIGNAL_FUNC (gtk_main_quit),
		      NULL);
  gtk_object_set_user_data (GTK_OBJECT (dialog), resolution_entry);
  gtk_signal_connect_object_while_alive (GTK_OBJECT (resolution_entry), "destroy",
					 GTK_SIGNAL_FUNC (gtk_widget_destroy),
					 GTK_OBJECT (dialog));
  gtk_signal_connect_object_while_alive (GTK_OBJECT (resolution_entry), "unmap",
					 GTK_SIGNAL_FUNC (gtk_widget_destroy),
					 GTK_OBJECT (dialog));

  SET_STYLE (dialog, dialog_style);
  gimp_dialog_set_icon (GTK_WINDOW (dialog));
  gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (dialog)->action_area), 8);

  ruler_width  = gdk_screen_width ();
  ruler_height = gdk_screen_height ();

  ruler_width  = ruler_width - 300 - (ruler_width % 100);
  ruler_height = ruler_height - 300 - (ruler_height % 100);

  table = gtk_table_new (4, 4, FALSE);
  gtk_container_set_border_width (GTK_CONTAINER (table), 16);
  gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), table);
  gtk_widget_show (table);
  
  ruler = gtk_hruler_new ();
  SET_STYLE (ruler, ruler_style);
  gtk_widget_set_usize (ruler, ruler_width, 32);
  gtk_ruler_set_range (GTK_RULER (ruler), 0, ruler_width, 0, ruler_width);
  gtk_table_attach (GTK_TABLE (table), ruler, 1, 3, 0, 1,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (ruler);

  ruler = gtk_vruler_new ();
  SET_STYLE (ruler, ruler_style);
  gtk_widget_set_usize (ruler, 32, ruler_height);
  gtk_ruler_set_range (GTK_RULER (ruler), 0, ruler_height, 0, ruler_height);
  gtk_table_attach (GTK_TABLE (table), ruler, 0, 1, 1, 3,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (ruler);

  ebox = gtk_event_box_new ();
  SET_STYLE (ebox, ruler_style);  
  gtk_table_attach (GTK_TABLE (table), ebox, 1, 2, 1, 2,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (ebox);

  table = gtk_table_new (3, 3, FALSE);
  gtk_container_add (GTK_CONTAINER (ebox), table);
  gtk_widget_show (table);

  darea = gtk_drawing_area_new ();
  SET_STYLE (darea, dialog_style);  
  gtk_drawing_area_size (GTK_DRAWING_AREA (darea), 16, 16);
  if (expose_callback)
  gtk_signal_connect_after (GTK_OBJECT (darea), "expose_event",
			    GTK_SIGNAL_FUNC (expose_callback),
			    (gpointer) GTK_CORNER_TOP_LEFT);
  gtk_table_attach (GTK_TABLE (table), darea, 0, 1, 0, 1,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (darea);

  darea = gtk_drawing_area_new ();
  SET_STYLE (darea, dialog_style);  
  gtk_drawing_area_size (GTK_DRAWING_AREA (darea), 16, 16);
  if (expose_callback)
    gtk_signal_connect_after (GTK_OBJECT (darea), "expose_event",
			      GTK_SIGNAL_FUNC (expose_callback),
			      (gpointer) GTK_CORNER_BOTTOM_LEFT);
  gtk_table_attach (GTK_TABLE (table), darea, 0, 1, 2, 3,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (darea);

  darea = gtk_drawing_area_new ();
  SET_STYLE (darea, dialog_style);  
  gtk_drawing_area_size (GTK_DRAWING_AREA (darea), 16, 16);
  if (expose_callback)
    gtk_signal_connect_after (GTK_OBJECT (darea), "expose_event",
			      GTK_SIGNAL_FUNC (expose_callback),
			      (gpointer) GTK_CORNER_TOP_RIGHT);
  gtk_table_attach (GTK_TABLE (table), darea, 2, 3, 0, 1,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (darea);

  darea = gtk_drawing_area_new ();
  SET_STYLE (darea, dialog_style);  
  gtk_drawing_area_size (GTK_DRAWING_AREA (darea), 16, 16);
  if (expose_callback)
    gtk_signal_connect_after (GTK_OBJECT (darea), "expose_event",
			      GTK_SIGNAL_FUNC (expose_callback),
			      (gpointer) GTK_CORNER_BOTTOM_RIGHT);
  gtk_table_attach (GTK_TABLE (table), darea, 2, 3, 2, 3,
		    GTK_SHRINK, GTK_SHRINK, 0, 0);
  gtk_widget_show (darea);

  vbox = gtk_vbox_new (FALSE, 16);
  gtk_table_attach_defaults (GTK_TABLE (table), vbox, 1, 2, 1, 2);
  gtk_widget_show (vbox);
  
  label = gtk_label_new (_("Measure the rulers and enter their lengths below."));
  SET_STYLE (label, ruler_style);
  gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);

  hbox = gtk_hbox_new (FALSE, 0);
  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
  gtk_widget_show (hbox);

  calibrate_xres = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (resolution_entry), 0);
  calibrate_yres = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (resolution_entry), 1);

  calibrate_entry =
    gimp_coordinates_new  (GIMP_UNIT_INCH, "%p",
			   FALSE, FALSE, 75,
			   GIMP_SIZE_ENTRY_UPDATE_SIZE,
			   FALSE,
			   FALSE,
			   _("Horizontal:"),
			   ruler_width,
			   calibrate_xres,
			   1, GIMP_MAX_IMAGE_SIZE,
			   0, 0,
			   _("Vertical:"),
			   ruler_height,
			   calibrate_yres,
			   1, GIMP_MAX_IMAGE_SIZE,
			   0, 0);
  gtk_widget_hide (GTK_WIDGET (GIMP_COORDINATES_CHAINBUTTON (calibrate_entry)));
  gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
		      GTK_SIGNAL_FUNC (gtk_widget_destroyed),
		      &calibrate_entry);

  if (ruler_style)
    {
      for (list = GTK_TABLE (calibrate_entry)->children;
	   list;
	   list = g_list_next (list))
	{
	  GtkTableChild *child = (GtkTableChild *) list->data;
	  
	  if (child && GTK_IS_LABEL (child->widget))
	    SET_STYLE (GTK_WIDGET (child->widget), ruler_style);
	}
    }
  gtk_box_pack_end (GTK_BOX (hbox), calibrate_entry, FALSE, FALSE, 0);
  gtk_widget_show (calibrate_entry);
  
  gtk_widget_show (dialog);

  gtk_main ();
}