File: gtkprintoperationpreview.c

package info (click to toggle)
gtk%2B3.0 3.22.11-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 182,828 kB
  • ctags: 82,378
  • sloc: ansic: 1,165,043; xml: 9,259; makefile: 6,914; sh: 5,179; python: 402; perl: 370; cpp: 34; sed: 16
file content (175 lines) | stat: -rw-r--r-- 5,254 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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
/* GTK - The GIMP Toolkit
 * gtkprintoperationpreview.c: Abstract print preview interface
 * Copyright (C) 2006, Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include "gtkprintoperationpreview.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"


static void gtk_print_operation_preview_base_init (gpointer g_iface);

GType
gtk_print_operation_preview_get_type (void)
{
  static GType print_operation_preview_type = 0;

  if (!print_operation_preview_type)
    {
      const GTypeInfo print_operation_preview_info =
      {
        sizeof (GtkPrintOperationPreviewIface), /* class_size */
	gtk_print_operation_preview_base_init,   /* base_init */
	NULL,		/* base_finalize */
	NULL,
	NULL,		/* class_finalize */
	NULL,		/* class_data */
	0,
	0,              /* n_preallocs */
	NULL
      };

      print_operation_preview_type =
	g_type_register_static (G_TYPE_INTERFACE, I_("GtkPrintOperationPreview"),
				&print_operation_preview_info, 0);

      g_type_interface_add_prerequisite (print_operation_preview_type, G_TYPE_OBJECT);
    }

  return print_operation_preview_type;
}

static void
gtk_print_operation_preview_base_init (gpointer g_iface)
{
  static gboolean initialized = FALSE;

  if (!initialized)
    {
      /**
       * GtkPrintOperationPreview::ready:
       * @preview: the object on which the signal is emitted
       * @context: the current #GtkPrintContext
       *
       * The ::ready signal gets emitted once per preview operation,
       * before the first page is rendered.
       * 
       * A handler for this signal can be used for setup tasks.
       */
      g_signal_new (I_("ready"),
		    GTK_TYPE_PRINT_OPERATION_PREVIEW,
		    G_SIGNAL_RUN_LAST,
		    G_STRUCT_OFFSET (GtkPrintOperationPreviewIface, ready),
		    NULL, NULL,
		    g_cclosure_marshal_VOID__OBJECT,
		    G_TYPE_NONE, 1,
		    GTK_TYPE_PRINT_CONTEXT);

      /**
       * GtkPrintOperationPreview::got-page-size:
       * @preview: the object on which the signal is emitted
       * @context: the current #GtkPrintContext
       * @page_setup: the #GtkPageSetup for the current page
       *
       * The ::got-page-size signal is emitted once for each page
       * that gets rendered to the preview. 
       *
       * A handler for this signal should update the @context
       * according to @page_setup and set up a suitable cairo
       * context, using gtk_print_context_set_cairo_context().
       */
      g_signal_new (I_("got-page-size"),
		    GTK_TYPE_PRINT_OPERATION_PREVIEW,
		    G_SIGNAL_RUN_LAST,
		    G_STRUCT_OFFSET (GtkPrintOperationPreviewIface, got_page_size),
		    NULL, NULL,
		    _gtk_marshal_VOID__OBJECT_OBJECT,
		    G_TYPE_NONE, 2,
		    GTK_TYPE_PRINT_CONTEXT,
		    GTK_TYPE_PAGE_SETUP);

      initialized = TRUE;
    }
}

/**
 * gtk_print_operation_preview_render_page:
 * @preview: a #GtkPrintOperationPreview
 * @page_nr: the page to render
 *
 * Renders a page to the preview, using the print context that
 * was passed to the #GtkPrintOperation::preview handler together
 * with @preview.
 *
 * A custom iprint preview should use this function in its ::expose
 * handler to render the currently selected page.
 * 
 * Note that this function requires a suitable cairo context to 
 * be associated with the print context. 
 *
 * Since: 2.10 
 */
void    
gtk_print_operation_preview_render_page (GtkPrintOperationPreview *preview,
					 gint			   page_nr)
{
  g_return_if_fail (GTK_IS_PRINT_OPERATION_PREVIEW (preview));

  GTK_PRINT_OPERATION_PREVIEW_GET_IFACE (preview)->render_page (preview,
								page_nr);
}

/**
 * gtk_print_operation_preview_end_preview:
 * @preview: a #GtkPrintOperationPreview
 *
 * Ends a preview. 
 *
 * This function must be called to finish a custom print preview.
 *
 * Since: 2.10
 */
void
gtk_print_operation_preview_end_preview (GtkPrintOperationPreview *preview)
{
  g_return_if_fail (GTK_IS_PRINT_OPERATION_PREVIEW (preview));

  GTK_PRINT_OPERATION_PREVIEW_GET_IFACE (preview)->end_preview (preview);
}

/**
 * gtk_print_operation_preview_is_selected:
 * @preview: a #GtkPrintOperationPreview
 * @page_nr: a page number
 *
 * Returns whether the given page is included in the set of pages that
 * have been selected for printing.
 * 
 * Returns: %TRUE if the page has been selected for printing
 *
 * Since: 2.10
 */
gboolean
gtk_print_operation_preview_is_selected (GtkPrintOperationPreview *preview,
					 gint                      page_nr)
{
  g_return_val_if_fail (GTK_IS_PRINT_OPERATION_PREVIEW (preview), FALSE);

  return GTK_PRINT_OPERATION_PREVIEW_GET_IFACE (preview)->is_selected (preview, page_nr);
}