2006-05-11 19:02:05 +00:00
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/* Printing
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*
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* GtkPrintOperation offers a simple API to support printing
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* in a cross-platform way.
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*
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*/
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#include <math.h>
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#include <gtk/gtk.h>
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/* In points */
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#define HEADER_HEIGHT (10*72/25.4)
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#define HEADER_GAP (3*72/25.4)
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2009-06-28 20:58:00 +00:00
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typedef struct
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2006-05-11 19:02:05 +00:00
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{
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2013-01-29 16:02:16 +00:00
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gchar *resourcename;
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2006-05-11 19:02:05 +00:00
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gdouble font_size;
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2009-06-28 20:58:00 +00:00
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gint lines_per_page;
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2006-05-11 19:02:05 +00:00
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gchar **lines;
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gint num_lines;
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gint num_pages;
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} PrintData;
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static void
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2009-06-28 20:58:00 +00:00
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begin_print (GtkPrintOperation *operation,
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2011-09-02 03:55:47 +00:00
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GtkPrintContext *context,
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gpointer user_data)
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2006-05-11 19:02:05 +00:00
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{
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PrintData *data = (PrintData *)user_data;
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2013-01-29 16:02:16 +00:00
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GBytes *bytes;
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2006-05-11 19:02:05 +00:00
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int i;
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double height;
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height = gtk_print_context_get_height (context) - HEADER_HEIGHT - HEADER_GAP;
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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data->lines_per_page = floor (height / data->font_size);
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2009-06-28 20:58:00 +00:00
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2013-01-29 16:02:16 +00:00
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bytes = g_resources_lookup_data (data->resourcename, 0, NULL);
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2006-05-11 19:02:05 +00:00
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2013-01-29 16:02:16 +00:00
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data->lines = g_strsplit (g_bytes_get_data (bytes, NULL), "\n", 0);
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g_bytes_unref (bytes);
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2006-05-11 19:02:05 +00:00
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i = 0;
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while (data->lines[i] != NULL)
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i++;
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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data->num_lines = i;
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data->num_pages = (data->num_lines - 1) / data->lines_per_page + 1;
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2008-03-31 21:45:22 +00:00
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2006-05-12 09:47:58 +00:00
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gtk_print_operation_set_n_pages (operation, data->num_pages);
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2006-05-11 19:02:05 +00:00
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}
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static void
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draw_page (GtkPrintOperation *operation,
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2011-09-02 03:55:47 +00:00
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GtkPrintContext *context,
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gint page_nr,
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gpointer user_data)
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2006-05-11 19:02:05 +00:00
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{
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PrintData *data = (PrintData *)user_data;
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cairo_t *cr;
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PangoLayout *layout;
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2007-04-28 14:06:25 +00:00
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gint text_width, text_height;
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gdouble width;
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gint line, i;
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2006-05-11 19:02:05 +00:00
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PangoFontDescription *desc;
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gchar *page_str;
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2006-05-31 14:06:02 +00:00
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cr = gtk_print_context_get_cairo_context (context);
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2006-05-11 19:02:05 +00:00
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width = gtk_print_context_get_width (context);
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cairo_rectangle (cr, 0, 0, width, HEADER_HEIGHT);
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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cairo_set_source_rgb (cr, 0.8, 0.8, 0.8);
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cairo_fill_preserve (cr);
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_set_line_width (cr, 1);
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cairo_stroke (cr);
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2006-05-31 14:06:02 +00:00
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layout = gtk_print_context_create_pango_layout (context);
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2006-05-11 19:02:05 +00:00
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desc = pango_font_description_from_string ("sans 14");
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pango_layout_set_font_description (layout, desc);
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pango_font_description_free (desc);
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2013-01-29 16:02:16 +00:00
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pango_layout_set_text (layout, data->resourcename, -1);
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2007-04-28 14:06:25 +00:00
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pango_layout_get_pixel_size (layout, &text_width, &text_height);
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2006-05-11 19:02:05 +00:00
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2007-04-28 14:06:25 +00:00
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if (text_width > width)
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{
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pango_layout_set_width (layout, width);
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pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_START);
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pango_layout_get_pixel_size (layout, &text_width, &text_height);
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}
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cairo_move_to (cr, (width - text_width) / 2, (HEADER_HEIGHT - text_height) / 2);
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2006-05-11 19:02:05 +00:00
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pango_cairo_show_layout (cr, layout);
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page_str = g_strdup_printf ("%d/%d", page_nr + 1, data->num_pages);
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pango_layout_set_text (layout, page_str, -1);
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g_free (page_str);
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2007-04-28 14:06:25 +00:00
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pango_layout_set_width (layout, -1);
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pango_layout_get_pixel_size (layout, &text_width, &text_height);
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cairo_move_to (cr, width - text_width - 4, (HEADER_HEIGHT - text_height) / 2);
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2006-05-11 19:02:05 +00:00
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pango_cairo_show_layout (cr, layout);
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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g_object_unref (layout);
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2009-06-28 20:58:00 +00:00
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2006-05-31 14:06:02 +00:00
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layout = gtk_print_context_create_pango_layout (context);
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2009-06-28 20:58:00 +00:00
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2008-07-03 17:35:50 +00:00
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desc = pango_font_description_from_string ("monospace");
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2006-05-11 19:02:05 +00:00
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pango_font_description_set_size (desc, data->font_size * PANGO_SCALE);
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pango_layout_set_font_description (layout, desc);
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pango_font_description_free (desc);
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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cairo_move_to (cr, 0, HEADER_HEIGHT + HEADER_GAP);
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line = page_nr * data->lines_per_page;
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2009-06-28 20:58:00 +00:00
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for (i = 0; i < data->lines_per_page && line < data->num_lines; i++)
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2006-05-11 19:02:05 +00:00
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{
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pango_layout_set_text (layout, data->lines[line], -1);
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pango_cairo_show_layout (cr, layout);
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2008-07-03 17:37:07 +00:00
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cairo_rel_move_to (cr, 0, data->font_size);
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2006-05-11 19:02:05 +00:00
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line++;
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}
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g_object_unref (layout);
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}
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static void
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2009-06-28 20:58:00 +00:00
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end_print (GtkPrintOperation *operation,
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2011-09-02 03:55:47 +00:00
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GtkPrintContext *context,
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gpointer user_data)
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2006-05-11 19:02:05 +00:00
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{
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PrintData *data = (PrintData *)user_data;
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2013-01-29 16:02:16 +00:00
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g_free (data->resourcename);
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2006-05-11 19:02:05 +00:00
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g_strfreev (data->lines);
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g_free (data);
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}
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GtkWidget *
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do_printing (GtkWidget *do_widget)
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{
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GtkPrintOperation *operation;
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2009-06-25 05:23:50 +00:00
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GtkPrintSettings *settings;
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2006-05-11 19:02:05 +00:00
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PrintData *data;
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GError *error = NULL;
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operation = gtk_print_operation_new ();
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data = g_new0 (PrintData, 1);
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2013-01-29 16:02:16 +00:00
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data->resourcename = g_strdup ("/sources/printing.c");
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2006-05-11 19:02:05 +00:00
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data->font_size = 12.0;
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2009-06-25 05:23:50 +00:00
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g_signal_connect (G_OBJECT (operation), "begin-print",
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2011-09-02 03:55:47 +00:00
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G_CALLBACK (begin_print), data);
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2009-06-25 05:23:50 +00:00
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g_signal_connect (G_OBJECT (operation), "draw-page",
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2011-09-02 03:55:47 +00:00
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G_CALLBACK (draw_page), data);
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2009-06-25 05:23:50 +00:00
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g_signal_connect (G_OBJECT (operation), "end-print",
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2011-09-02 03:55:47 +00:00
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G_CALLBACK (end_print), data);
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2006-05-11 19:02:05 +00:00
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2008-02-22 22:38:47 +00:00
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gtk_print_operation_set_use_full_page (operation, FALSE);
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gtk_print_operation_set_unit (operation, GTK_UNIT_POINTS);
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2009-07-10 09:28:31 +00:00
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gtk_print_operation_set_embed_page_setup (operation, TRUE);
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2008-02-22 22:38:47 +00:00
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2009-06-25 05:23:50 +00:00
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settings = gtk_print_settings_new ();
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2012-05-25 03:12:36 +00:00
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gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_BASENAME, "gtk-demo");
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2009-06-25 05:23:50 +00:00
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gtk_print_operation_set_print_settings (operation, settings);
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2006-06-07 15:09:03 +00:00
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gtk_print_operation_run (operation, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, GTK_WINDOW (do_widget), &error);
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2006-05-11 19:02:05 +00:00
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g_object_unref (operation);
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2009-06-25 05:23:50 +00:00
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g_object_unref (settings);
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2006-05-11 19:02:05 +00:00
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if (error)
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{
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GtkWidget *dialog;
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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dialog = gtk_message_dialog_new (GTK_WINDOW (do_widget),
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2011-09-02 03:55:47 +00:00
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GTK_DIALOG_DESTROY_WITH_PARENT,
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GTK_MESSAGE_ERROR,
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GTK_BUTTONS_CLOSE,
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"%s", error->message);
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2006-05-11 19:02:05 +00:00
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g_error_free (error);
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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g_signal_connect (dialog, "response",
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2011-09-02 03:55:47 +00:00
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G_CALLBACK (gtk_widget_destroy), NULL);
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2009-06-28 20:58:00 +00:00
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gtk_widget_show (dialog);
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2006-05-11 19:02:05 +00:00
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}
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2009-06-28 20:58:00 +00:00
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2006-05-11 19:02:05 +00:00
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return NULL;
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}
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