Began to implement the printing dialog

commands.c

@@ -2,6 +2,7 @@
 
 #include "commands.h"
 #include "zathura.h"
+#include "print.h"
 
 bool
 cmd_bookmark_create(girara_session_t* session, girara_list_t* argument_list)
@@ -43,6 +44,17 @@ cmd_info(girara_session_t* session, girara_list_t* argument_list)
 bool
 cmd_print(girara_session_t* session, girara_list_t* argument_list)
 {
+  g_return_val_if_fail(session != NULL, false);
+  g_return_val_if_fail(session->global.data != NULL, false);
+  zathura_t* zathura = session->global.data;
+
+	if (zathura->document == NULL) {
+		girara_error("no document as been opened");
+		return false;
+	}
+
+	print((zathura_t*) session->global.data);;
+
   return true;
 }
 

print.c

+#include "print.h"
+#include "document.h"
+
+void
+print(zathura_t* zathura)
+{
+  g_return_if_fail(zathura           != NULL);
+  g_return_if_fail(zathura->document != NULL);
+
+  GtkPrintOperation* print_operation = gtk_print_operation_new();
+
+  /* print operation settings */
+  if (zathura->print.settings != NULL) {
+    gtk_print_operation_set_print_settings(print_operation, zathura->print.settings);
+  }
+
+  if (zathura->print.page_setup != NULL) {
+    gtk_print_operation_set_default_page_setup(print_operation, zathura->print.page_setup);
+  }
+  
+  gtk_print_operation_set_show_progress(print_operation, TRUE);
+  gtk_print_operation_set_n_pages(print_operation, zathura->document->number_of_pages);
+  gtk_print_operation_set_current_page(print_operation, zathura->document->current_page_number);
+
+  /* print operation signals */
+  g_signal_connect(print_operation, "draw-page", G_CALLBACK(cb_print_draw_page), zathura);
+
+  /* print */
+  GtkPrintOperationResult result = gtk_print_operation_run(print_operation,
+      GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, NULL, NULL);
+
+  if (result == GTK_PRINT_OPERATION_RESULT_APPLY) {
+    /* save previous settings */
+    zathura->print.settings   = gtk_print_operation_get_print_settings(print_operation);
+    zathura->print.page_setup = gtk_print_operation_get_default_page_setup(print_operation);
+  } else if (result == GTK_PRINT_OPERATION_RESULT_ERROR) {
+    girara_error("Error occured while printing progress");
+  }
+
+  g_object_unref(print_operation);
+}
+
+void
+cb_print_draw_page(GtkPrintOperation* print_operation, GtkPrintContext* context, gint page_number, zathura_t* zathura)
+{
+  cairo_t* cairo = gtk_print_context_get_cairo_context(context);
+
+  /*zathura_page_t* page = zathura->document->pages[page_number];*/
+  /*g_static_mutex_lock(&(page->lock));*/
+  /*zathura_image_buffer_t* image_buffer = zathura_page_render(page);*/
+  /*g_static_mutex_unlock(&(page->lock));*/
+
+  /*for (unsigned int y = 0; y < image_buffer->height; y++) {*/
+    /*unsigned char* src = image_buffer->data + y * image_buffer->rowstride;*/
+    /*for (unsigned int x = 0; x < image_buffer->width; x++) {*/
+      /*cairo_set_source_rgb(cairo, src[0], src[1], src[2]);*/
+      /*cairo_rectangle(cairo, x, y, 1, 1);*/
+      /*cairo_fill(cairo);*/
+    /*}*/
+  /*}*/
+}

print.h

+/* See LICENSE file for license and copyright information */
+
+#ifndef PRINT_H
+#define PRINT_H
+
+#include "zathura.h"
+
+/**
+ * Opens a print dialog to print the current file
+ *
+ * @param zathura
+ */
+void print(zathura_t* zathura);
+
+/**
+ * Callback that is executed for every page that should be printed
+ *
+ * @param print_operation Print operation object
+ * @param context Print context
+ * @param page_number Current page number
+ * @param zathura Zathura object
+ */
+void cb_print_draw_page(GtkPrintOperation* print_operation, GtkPrintContext*
+		context, gint page_number, zathura_t* zathura);
+
+#endif // PRINT_H

zathura.c

@@ -31,6 +31,9 @@ zathura_init(int argc, char* argv[])
     return NULL;
   }
 
+  /* general */
+  zathura->document = NULL;
+
   /* plugins */
   zathura->plugins.plugins = girara_list_new();
   zathura->plugins.path = girara_list_new();
@@ -101,6 +104,10 @@ zathura_init(int argc, char* argv[])
   zathura->ui.page_view             = NULL;
   zathura->ui.index                 = NULL;
 
+  /* Print settings */
+  zathura->print.settings   = NULL;
+  zathura->print.page_setup = NULL;
+
   /* load plugins */
   zathura_document_plugins_load(zathura);
 
@@ -206,6 +213,10 @@ zathura_free(zathura_t* zathura)
 
   document_close(zathura);
 
+  /* free print settings */
+  g_object_unref(zathura->print.settings);
+  g_object_unref(zathura->print.page_setup);
+
   /* free registered plugins */
   zathura_document_plugins_free(zathura);
   girara_list_free(zathura->plugins.plugins);

zathura.h

@@ -65,6 +65,12 @@ typedef struct zathura_s
     gchar* data_dir;
   } config;
 
+  struct
+  {
+    GtkPrintSettings* settings;
+    GtkPageSetup* page_setup;
+  } print;
+
   struct
   {
     unsigned int page_padding;