[evince] print: Add print setting to draw borders

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 691b9d788f420094336e2e0ad2a407de8cfd04e1
Author: Jonas Danielsson <jonas threetimestwo org>
Date:   Tue Dec 1 21:03:35 2020 +0100

    print: Add print setting to draw borders
    
    Fixes #221

 libview/ev-print-operation.c | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)
---
diff --git a/libview/ev-print-operation.c b/libview/ev-print-operation.c
index ede42016..7b61b17b 100644
--- a/libview/ev-print-operation.c
+++ b/libview/ev-print-operation.c
@@ -1559,9 +1559,10 @@ typedef enum {
        EV_SCALE_FIT_TO_PRINTABLE_AREA
 } EvPrintScale;
 
-#define EV_PRINT_SETTING_PAGE_SCALE "evince-print-setting-page-scale"
-#define EV_PRINT_SETTING_AUTOROTATE "evince-print-setting-page-autorotate"
-#define EV_PRINT_SETTING_PAGE_SIZE  "evince-print-setting-page-size"
+#define EV_PRINT_SETTING_PAGE_SCALE   "evince-print-setting-page-scale"
+#define EV_PRINT_SETTING_AUTOROTATE   "evince-print-setting-page-autorotate"
+#define EV_PRINT_SETTING_PAGE_SIZE    "evince-print-setting-page-size"
+#define EV_PRINT_SETTING_DRAW_BORDERS "evince-print-setting-page-draw-borders"
 
 struct _EvPrintOperationPrint {
        EvPrintOperation parent;
@@ -1579,6 +1580,8 @@ struct _EvPrintOperationPrint {
        gboolean     autorotate;
        GtkWidget   *source_button;
        gboolean     use_source_size;
+       GtkWidget   *borders_button;
+       gboolean     draw_borders;
 };
 
 struct _EvPrintOperationPrintClass {
@@ -1939,6 +1942,15 @@ ev_print_operation_print_draw_page (EvPrintOperationPrint *print,
                }
        }
 
+       if (print->draw_borders) {
+               cairo_set_line_width (cr, 1);
+               cairo_set_source_rgb (cr, 0., 0., 0.);
+               cairo_rectangle (cr, 0, 0,
+                                gtk_print_context_get_width (context),
+                                gtk_print_context_get_height (context));
+               cairo_stroke (cr);
+       }
+
        ev_job_print_set_cairo (EV_JOB_PRINT (print->job_print), cr);
        ev_job_scheduler_push_job (print->job_print, EV_JOB_PRIORITY_NONE);
 }
@@ -1953,6 +1965,7 @@ ev_print_operation_print_create_custom_widget (EvPrintOperationPrint *print,
        EvPrintScale      page_scale;
        gboolean          autorotate;
        gboolean          use_source_size;
+       gboolean          draw_borders;
 
        settings = gtk_print_operation_get_print_settings (print->op);
        page_scale = gtk_print_settings_get_int_with_default (settings, EV_PRINT_SETTING_PAGE_SCALE, 1);
@@ -1960,6 +1973,9 @@ ev_print_operation_print_create_custom_widget (EvPrintOperationPrint *print,
                gtk_print_settings_get_bool (settings, EV_PRINT_SETTING_AUTOROTATE) :
                TRUE;
        use_source_size = gtk_print_settings_get_bool (settings, EV_PRINT_SETTING_PAGE_SIZE);
+       draw_borders = gtk_print_settings_has_key (settings, EV_PRINT_SETTING_DRAW_BORDERS) ?
+               gtk_print_settings_get_bool (settings, EV_PRINT_SETTING_DRAW_BORDERS) :
+               FALSE;
 
        grid = gtk_grid_new ();
        gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
@@ -2004,6 +2020,13 @@ ev_print_operation_print_create_custom_widget (EvPrintOperationPrint *print,
        gtk_grid_attach (GTK_GRID (grid), print->source_button, 0, 2, 2, 1);
        gtk_widget_show (print->source_button);
 
+       print->borders_button = gtk_check_button_new_with_label (_("Draw border around pages"));
+       gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (print->borders_button), draw_borders);
+       gtk_widget_set_tooltip_text (print->borders_button, _("When enabled, a border will be drawn "
+                                                            "around each page."));
+       gtk_grid_attach (GTK_GRID (grid), print->borders_button, 0, 3, 2, 1);
+       gtk_widget_show (print->borders_button);
+
        return G_OBJECT (grid);
 }
 
@@ -2016,10 +2039,12 @@ ev_print_operation_print_custom_widget_apply (EvPrintOperationPrint *print,
        print->page_scale = gtk_combo_box_get_active (GTK_COMBO_BOX (print->scale_combo));
        print->autorotate = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (print->autorotate_button));
        print->use_source_size = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (print->source_button));
+       print->draw_borders = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (print->borders_button));
        settings = gtk_print_operation_get_print_settings (print->op);
        gtk_print_settings_set_int (settings, EV_PRINT_SETTING_PAGE_SCALE, print->page_scale);
        gtk_print_settings_set_bool (settings, EV_PRINT_SETTING_AUTOROTATE, print->autorotate);
        gtk_print_settings_set_bool (settings, EV_PRINT_SETTING_PAGE_SIZE, print->use_source_size);
+       gtk_print_settings_set_bool (settings, EV_PRINT_SETTING_PAGE_SIZE, print->draw_borders);
 }
 
 static gboolean