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-rw-r--r--mate-dictionary/src/gdict-print.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/mate-dictionary/src/gdict-print.c b/mate-dictionary/src/gdict-print.c
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+/* gdict-print.c - print-related helper functions
+ *
+ * This file is part of MATE Dictionary
+ *
+ * Copyright (C) 2005 Emmanuele Bassi
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include <gtk/gtk.h>
+#include <glib/gi18n.h>
+
+#include <mateconf/mateconf-client.h>
+
+#include <libgdict/gdict.h>
+
+#include "gdict-pref-dialog.h"
+#include "gdict-print.h"
+
+#define HEADER_HEIGHT(lines) ((lines) * 72 / 25.4)
+#define HEADER_GAP(lines) ((lines) * 72 / 25.4)
+
+typedef struct _GdictPrintData
+{
+ GdictDefbox *defbox;
+ gchar *word;
+
+ PangoFontDescription *font_desc;
+ gdouble font_size;
+
+ gchar **lines;
+
+ gint n_lines;
+ gint lines_per_page;
+ gint n_pages;
+} GdictPrintData;
+
+static void
+begin_print (GtkPrintOperation *operation,
+ GtkPrintContext *context,
+ gpointer user_data)
+{
+ GdictPrintData *data = user_data;
+ gchar *contents;
+ gdouble height;
+
+ height = gtk_print_context_get_height (context)
+ - HEADER_HEIGHT (10)
+ - HEADER_GAP (3);
+
+ contents = gdict_defbox_get_text (data->defbox, NULL);
+
+ data->lines = g_strsplit (contents, "\n", 0);
+ data->n_lines = g_strv_length (data->lines);
+ data->lines_per_page = floor (height / data->font_size);
+
+ data->n_pages = (data->n_lines - 1) / data->lines_per_page + 1;
+
+ gtk_print_operation_set_n_pages (operation, data->n_pages);
+
+ g_free (contents);
+}
+
+static void
+draw_page (GtkPrintOperation *operation,
+ GtkPrintContext *context,
+ gint page_number,
+ gpointer user_data)
+{
+ GdictPrintData *data = user_data;
+ cairo_t *cr;
+ PangoLayout *layout;
+ gint text_width, text_height;
+ gdouble width;
+ gint line, i;
+ PangoFontDescription *desc;
+ gchar *page_str;
+
+ cr = gtk_print_context_get_cairo_context (context);
+ width = gtk_print_context_get_width (context);
+
+ cairo_rectangle (cr, 0, 0, width, HEADER_HEIGHT (10));
+
+ cairo_set_source_rgb (cr, 0.8, 0.8, 0.8);
+ cairo_fill_preserve (cr);
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_set_line_width (cr, 1);
+ cairo_stroke (cr);
+
+ /* header */
+ layout = gtk_print_context_create_pango_layout (context);
+
+ desc = pango_font_description_from_string ("sans 14");
+ pango_layout_set_font_description (layout, desc);
+ pango_font_description_free (desc);
+
+ pango_layout_set_text (layout, data->word, -1);
+ pango_layout_get_pixel_size (layout, &text_width, &text_height);
+
+ if (text_width > width)
+ {
+ pango_layout_set_width (layout, width);
+ pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_START);
+ pango_layout_get_pixel_size (layout, &text_width, &text_height);
+ }
+
+ cairo_move_to (cr, (width - text_width) / 2,
+ (HEADER_HEIGHT (10) - text_height) / 2);
+ pango_cairo_show_layout (cr, layout);
+
+ page_str = g_strdup_printf ("%d/%d", page_number + 1, data->n_pages);
+ pango_layout_set_text (layout, page_str, -1);
+ g_free (page_str);
+
+ pango_layout_set_width (layout, -1);
+ pango_layout_get_pixel_size (layout, &text_width, &text_height);
+ cairo_move_to (cr, width - text_width - 4,
+ (HEADER_HEIGHT (10) - text_height) / 2);
+ pango_cairo_show_layout (cr, layout);
+
+ g_object_unref (layout);
+
+ /* text */
+ layout = gtk_print_context_create_pango_layout (context);
+ pango_font_description_set_size (data->font_desc,
+ data->font_size * PANGO_SCALE);
+ pango_layout_set_font_description (layout, data->font_desc);
+
+ cairo_move_to (cr, 0, HEADER_HEIGHT (10) + HEADER_GAP (3));
+ line = page_number * data->lines_per_page;
+ for (i = 0; i < data->lines_per_page && line < data->n_lines; i++)
+ {
+ pango_layout_set_text (layout, data->lines[line], -1);
+
+ pango_cairo_show_layout (cr, layout);
+ cairo_rel_move_to (cr, 0, data->font_size);
+ line++;
+ }
+
+ g_object_unref (layout);
+}
+
+static void
+end_print (GtkPrintOperation *operation,
+ GtkPrintContext *context,
+ gpointer user_data)
+{
+ GdictPrintData *data = user_data;
+
+ pango_font_description_free (data->font_desc);
+ g_free (data->word);
+ g_strfreev (data->lines);
+ g_free (data);
+}
+
+static gchar *
+get_print_font (void)
+{
+ MateConfClient *client;
+ gchar *print_font;
+
+ client = mateconf_client_get_default ();
+ print_font = mateconf_client_get_string (client,
+ GDICT_MATECONF_PRINT_FONT_KEY,
+ NULL);
+ if (!print_font)
+ print_font = g_strdup (GDICT_DEFAULT_PRINT_FONT);
+
+ g_object_unref (client);
+
+ return print_font;
+}
+
+void
+gdict_show_print_preview (GtkWindow *parent,
+ GdictDefbox *defbox)
+{
+ GtkPrintOperation *operation;
+ GdictPrintData *data;
+ gchar *print_font;
+ gchar *word;
+ GError *error;
+
+ g_return_if_fail (parent == NULL || GTK_IS_WINDOW (parent));
+ g_return_if_fail (GDICT_IS_DEFBOX (defbox));
+
+ g_object_get (defbox, "word", &word, NULL);
+ if (!word)
+ {
+ g_warning ("Preview should be disabled.");
+ return;
+ }
+
+ data = g_new0 (GdictPrintData, 1);
+ data->defbox = defbox;
+ data->word = word;
+
+ operation = gtk_print_operation_new ();
+ print_font = get_print_font ();
+ data->font_desc = pango_font_description_from_string (print_font);
+ data->font_size = pango_font_description_get_size (data->font_desc)
+ / PANGO_SCALE;
+ g_free (print_font);
+
+ g_signal_connect (operation, "begin-print",
+ G_CALLBACK (begin_print), data);
+ g_signal_connect (operation, "draw-page",
+ G_CALLBACK (draw_page), data);
+ g_signal_connect (operation, "end-print",
+ G_CALLBACK (end_print), data);
+
+ error = NULL;
+ gtk_print_operation_run (operation,
+ GTK_PRINT_OPERATION_ACTION_PREVIEW,
+ parent,
+ &error);
+ g_object_unref (operation);
+
+ if (error)
+ {
+ GtkWidget *dialog;
+
+ dialog = gtk_message_dialog_new (parent,
+ GTK_DIALOG_DESTROY_WITH_PARENT,
+ GTK_MESSAGE_ERROR,
+ GTK_BUTTONS_CLOSE,
+ _("Unable to display the preview: %s"),
+ error->message);
+ g_error_free (error);
+
+ g_signal_connect (dialog, "response",
+ G_CALLBACK (gtk_widget_destroy), NULL);
+
+ gtk_widget_show (dialog);
+ }
+}
+
+void
+gdict_show_print_dialog (GtkWindow *parent,
+ GdictDefbox *defbox)
+{
+ GtkPrintOperation *operation;
+ GdictPrintData *data;
+ gchar *print_font;
+ gchar *word;
+ GError *error;
+
+ g_return_if_fail (parent == NULL || GTK_IS_WINDOW (parent));
+ g_return_if_fail (GDICT_IS_DEFBOX (defbox));
+
+ g_object_get (defbox, "word", &word, NULL);
+ if (!word)
+ {
+ g_warning ("Print should be disabled.");
+ return;
+ }
+
+ data = g_new0 (GdictPrintData, 1);
+ data->defbox = defbox;
+ data->word = word;
+
+ operation = gtk_print_operation_new ();
+ print_font = get_print_font ();
+ data->font_desc = pango_font_description_from_string (print_font);
+ data->font_size = pango_font_description_get_size (data->font_desc)
+ / PANGO_SCALE;
+ g_free (print_font);
+
+ g_signal_connect (operation, "begin-print",
+ G_CALLBACK (begin_print), data);
+ g_signal_connect (operation, "draw-page",
+ G_CALLBACK (draw_page), data);
+ g_signal_connect (operation, "end-print",
+ G_CALLBACK (end_print), data);
+
+ error = NULL;
+ gtk_print_operation_run (operation,
+ GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
+ parent,
+ &error);
+ g_object_unref (operation);
+
+ if (error)
+ {
+ GtkWidget *dialog;
+
+ dialog = gtk_message_dialog_new (parent,
+ GTK_DIALOG_DESTROY_WITH_PARENT,
+ GTK_MESSAGE_ERROR,
+ GTK_BUTTONS_CLOSE,
+ _("Unable to display the preview: %s"),
+ error->message);
+ g_error_free (error);
+
+ g_signal_connect (dialog, "response",
+ G_CALLBACK (gtk_widget_destroy), NULL);
+
+ gtk_widget_show (dialog);
+ }
+}
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