A month a ago i was searching for a good PDF viewer that allow me to browse my PDF fasters that adobe reader and evince which i think not very stable for large PDFs. So i asked how hard to build a PDF viewer?, i found epdfviewer which is simple minimal PDF viewer, but i had some crashes when using it. So i thought why to try to build one as a proof that it’s simple to build minimal PDF viewer without caching or resizing just view a PDF as it’s and go through pages.
Here i made a simple viewer with poppler pdf library and GTK as its UI widget library, This code is 300 lines in one C file “viewer.c” that uses only GTK and poppler APIs , i have benefit from epdfviewer project and poppler cairo example in test folder of the poppler source code.
To build the viewer you need to install some development packages, on Ubuntu just use:
sudo apt-get install libgtk2.0-dev libpoppler-dev libpoppler-glib-dev
After installing those packages build the viewer by simple gcc command:
gcc -o viewer viewer.c `pkg-config –libs –cflags gtk+-2.0 poppler-glib`
The output of this command will be viewer application, now you are ready to open a PDF file using it by using the command:
./viewer file:////path/to/a/pdf/file.pdf
That’s it, so it’s also too simple in building process.
Here is the code if you want to try it, add or modify it.
/**
* @file viewer.c
*
* @brief Too simple PDF Viewer
*
* Copyright 2009 Yasser Nour <yassernour.wordpress.com>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
/*
* Install this development packages:
* sudo apt-get install libgtk2.0-dev libpoppler-dev libpoppler-glib-dev
*
* Compile the viewer.c:
* gcc -o viewer viewer.c `pkg-config --libs --cflags gtk+-2.0 poppler-glib`
*
* Open a pdf file using it by:
* ./viewer file:////path/to/a/pdf/file.pdf
*/
#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <cairo.h>
#include <poppler.h>
#include <math.h>
GtkWidget *window1 ;
GtkWidget *vbox1 ;
GtkWidget *menubar ;
GtkWidget *filemenu ;
GtkWidget *filemenu_menu ;
GtkWidget *fileopen ;
GtkWidget *separator_1 ;
GtkWidget *filequit ;
GtkWidget *helpmenu ;
GtkWidget *helpmenu_menu ;
GtkWidget *helphelp ;
GtkWidget *helpabout ;
GtkWidget *toolbar1 ;
GtkToolItem *toolback ;
GtkToolItem *toolforward ;
GtkToolItem *toolhome ;
GtkToolItem *separator_2 ;
GtkToolItem *toolquit ;
GtkWidget *drawarea1 ;
GtkWidget *label1 ;
GtkWidget *hbox1 ;
GtkWidget *button1 ;
GtkWidget *button2 ;
GtkAccelGroup *menuGroup;
GtkWidget *statusbar;
PopplerPage *ppage;
PopplerDocument *document;
cairo_surface_t *surface;
int current_page = 0;
int total_pages = 0;
#define gtk_widget_set_tooltip_text(a, b)
void show_about(GtkWidget *widget, gpointer data)
{
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file("Noon.jpg", NULL);
GtkWidget *dialog = gtk_about_dialog_new();
gtk_about_dialog_set_name(GTK_ABOUT_DIALOG(dialog), "PView");
gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(dialog), "0.0");
gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(dialog),
"(c) Yasser Nour");
gtk_about_dialog_set_comments(GTK_ABOUT_DIALOG(dialog),
"NourView is a too simple pdf viewer");
gtk_about_dialog_set_website(GTK_ABOUT_DIALOG(dialog),
"http://www.yassernour.wordpress.net");
gtk_about_dialog_set_logo(GTK_ABOUT_DIALOG(dialog), pixbuf);
g_object_unref(pixbuf), pixbuf = NULL;
gtk_dialog_run(GTK_DIALOG (dialog));
gtk_widget_destroy(dialog);
}
void update_statusbar()
{
gchar *str;
str = g_strdup_printf("Page %d / %d",
current_page + 1, total_pages);
gtk_statusbar_push(GTK_STATUSBAR(statusbar),
gtk_statusbar_get_context_id(GTK_STATUSBAR(statusbar), str), str);
g_free(str);
}
void MessageBox (GtkWindow *parentWindow, char *messageValue)
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new (parentWindow, GTK_DIALOG_MODAL, GTK_MESSAGE_INFO, GTK_BUTTONS_OK, messageValue);
gtk_window_set_title (GTK_WINDOW (dialog), "Information");
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
/* Stop the GTK+ main loop function. */
static void destroy_window1 (GtkWidget *window, gpointer data)
{
gtk_main_quit ();
}
/* Return FALSE to destroy the widget. By returning TRUE, you can cancel a delete-event. This can be used to confirm quitting the application. */
static gboolean delete_event_window1 (GtkWidget *window, GdkEvent *event, gpointer data)
{
return (FALSE);
}
static void drawarea1_expose_event( GtkWidget *widget, GdkEventExpose *event )
{
cairo_t *cr;
gdk_window_clear (drawarea1->window);
cr = gdk_cairo_create (drawarea1->window);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
static void redraw_callback (void *data)
{
gtk_widget_queue_draw (drawarea1);
}
static void view_set_page (int page)
{
int err;
int w, h;
double width, height;
cairo_t *cr;
ppage = poppler_document_get_page (document, page);
poppler_page_get_size (ppage, &width, &height);
w = (int) ceil(width);
h = (int) ceil(height);
cairo_surface_destroy (surface);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (surface);
poppler_page_render (ppage, cr);
cairo_destroy (cr);
gtk_widget_set_size_request (drawarea1, w, h);
gtk_widget_queue_draw (drawarea1);
update_statusbar();
}
static void fileopen_activated (GtkMenuItem *fileopen, GtkWindow *parentWindow)
{
MessageBox(parentWindow, "Menu fileopen was clicked.");
}
static void filequit_activated (GtkMenuItem *filequit, GtkWindow *parentWindow)
{
gtk_main_quit ();
}
static void helphelp_activated (GtkMenuItem *helphelp, GtkWindow *parentWindow)
{
MessageBox(parentWindow, "Menu helphelp was clicked.");
}
static void helpabout_activated (GtkMenuItem *helpabout, GtkWindow *parentWindow)
{
MessageBox(parentWindow, "Menu helpabout was clicked.");
}
static void toolback_clicked (GtkToolItem *tooleditcut, GtkWindow *parentWindow)
{
if( current_page != 0)
current_page--;
view_set_page(current_page);
}
static void toolforward_clicked (GtkToolItem *tooleditcopy, GtkWindow *parentWindow)
{
if( current_page != (total_pages - 1))
current_page++;
view_set_page(current_page);
}
static void toolhome_clicked (GtkToolItem *tooleditpaste, GtkWindow *parentWindow)
{
current_page = 0;
view_set_page(0);
}
static void toolquit_clicked (GtkToolItem *tooleditselectall, GtkWindow *parentWindow)
{
gtk_main_quit ();
}
void InitializeUI ()
{
menuGroup = gtk_accel_group_new();
/* initialize main window */
window1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window1), "pView");
gtk_window_set_default_size (GTK_WINDOW (window1), 400, 200);
gtk_window_maximize (GTK_WINDOW (window1));
/* Connect the main window to the destroy and delete-event signals. */
g_signal_connect (G_OBJECT (window1), "destroy", G_CALLBACK (destroy_window1), NULL);
g_signal_connect (G_OBJECT (window1), "delete_event", G_CALLBACK (delete_event_window1), NULL);
vbox1 = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window1), vbox1);
menubar = gtk_menu_bar_new ();
gtk_box_pack_start (GTK_BOX (vbox1), menubar, FALSE, FALSE, 2);
filemenu = gtk_menu_item_new_with_label ("File");
filemenu_menu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (filemenu), filemenu_menu);
gtk_menu_shell_append (GTK_MENU_SHELL (menubar), filemenu);
fileopen = gtk_image_menu_item_new_from_stock (GTK_STOCK_OPEN, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), fileopen);
g_signal_connect (G_OBJECT (fileopen), "activate", G_CALLBACK (fileopen_activated), (gpointer) window1);
separator_1 = gtk_separator_menu_item_new ();
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), separator_1);
filequit = gtk_image_menu_item_new_from_stock (GTK_STOCK_QUIT, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), filequit);
g_signal_connect (G_OBJECT (filequit), "activate", G_CALLBACK (filequit_activated), (gpointer) window1);
helpmenu = gtk_menu_item_new_with_label ("Help");
helpmenu_menu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (helpmenu), helpmenu_menu);
gtk_menu_shell_append (GTK_MENU_SHELL (menubar), helpmenu);
helphelp = gtk_image_menu_item_new_from_stock (GTK_STOCK_HELP, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (helpmenu_menu), helphelp);
g_signal_connect (G_OBJECT (helphelp), "activate", G_CALLBACK (helphelp_activated), (gpointer) window1);
helpabout = gtk_image_menu_item_new_from_stock (GTK_STOCK_ABOUT, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (helpmenu_menu), helpabout);
g_signal_connect (G_OBJECT (helpabout), "activate", G_CALLBACK (show_about), (gpointer) window1);
toolbar1 = gtk_toolbar_new ();
gtk_toolbar_set_show_arrow (GTK_TOOLBAR (toolbar1), TRUE);
gtk_toolbar_set_style (GTK_TOOLBAR (toolbar1), GTK_TOOLBAR_BOTH);
gtk_box_pack_start (GTK_BOX (vbox1), toolbar1, FALSE, FALSE, 2);
toolback = gtk_tool_button_new_from_stock (GTK_STOCK_GO_BACK);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolback, 0);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolback), "Previous Page");
g_signal_connect (G_OBJECT (toolback), "clicked", G_CALLBACK (toolback_clicked), (gpointer) window1);
toolforward = gtk_tool_button_new_from_stock (GTK_STOCK_GO_FORWARD);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolforward, 1);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolforward), "Next page");
g_signal_connect (G_OBJECT (toolforward), "clicked", G_CALLBACK (toolforward_clicked), (gpointer) window1);
toolhome = gtk_tool_button_new_from_stock (GTK_STOCK_HOME);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolhome, 2);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolhome), "Paste the Clipboard");
g_signal_connect (G_OBJECT (toolhome), "clicked", G_CALLBACK (toolhome_clicked), (gpointer) window1);
separator_2 = gtk_separator_tool_item_new ();
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), separator_2, 3);
toolquit = gtk_tool_button_new_from_stock (GTK_STOCK_QUIT);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolquit, 4);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolquit), "exit");
g_signal_connect (G_OBJECT (toolquit), "clicked", G_CALLBACK (toolquit_clicked), (gpointer) window1);
drawarea1 = gtk_drawing_area_new();
gtk_box_pack_start (GTK_BOX (vbox1), drawarea1, TRUE, TRUE, 2);
g_signal_connect (G_OBJECT (drawarea1), "expose_event", G_CALLBACK (drawarea1_expose_event), (gpointer) window1);
statusbar = gtk_statusbar_new();
gtk_box_pack_start(GTK_BOX(vbox1), statusbar, FALSE, TRUE, 1);
gtk_window_add_accel_group( GTK_WINDOW(window1), menuGroup);
}
int main (int argc, char *argv[])
{
gtk_init (&argc, &argv);
if (argc != 2) {
printf("Usage: viewer <uri>\n");
return 1;
}
document = poppler_document_new_from_file (argv[1], NULL, NULL);
if (document == NULL)
return -1;
InitializeUI();
total_pages = poppler_document_get_n_pages (document);
view_set_page(0);
gtk_widget_show_all (window1);
gtk_main ();
return (0);
}
* @file viewer.c
*
* @brief Too simple PDF Viewer
*
* Copyright 2009 Yasser Nour <yassernour.wordpress.com>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
/*
* Install this development packages:
* sudo apt-get install libgtk2.0-dev libpoppler-dev libpoppler-glib-dev
*
* Compile the viewer.c:
* gcc -o viewer viewer.c `pkg-config –libs –cflags gtk+-2.0 poppler-glib`
*
* Open a pdf file using it by:
* ./viewer file:////path/to/a/pdf/file.pdf
*/
#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <cairo.h>
#include <poppler.h>
#include <math.h>
GtkWidget *window1 ;
GtkWidget *vbox1 ;
GtkWidget *menubar ;
GtkWidget *filemenu ;
GtkWidget *filemenu_menu ;
GtkWidget *fileopen ;
GtkWidget *separator_1 ;
GtkWidget *filequit ;
GtkWidget *helpmenu ;
GtkWidget *helpmenu_menu ;
GtkWidget *helphelp ;
GtkWidget *helpabout ;
GtkWidget *toolbar1 ;
GtkToolItem *toolback ;
GtkToolItem *toolforward ;
GtkToolItem *toolhome ;
GtkToolItem *separator_2 ;
GtkToolItem *toolquit ;
GtkWidget *drawarea1 ;
GtkWidget *label1 ;
GtkWidget *hbox1 ;
GtkWidget *button1 ;
GtkWidget *button2 ;
GtkAccelGroup *menuGroup;
GtkWidget *statusbar;
PopplerPage *ppage;
PopplerDocument *document;
cairo_surface_t *surface;
int current_page = 0;
int total_pages = 0;
#define gtk_widget_set_tooltip_text(a, b)
void show_about(GtkWidget *widget, gpointer data)
{
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(“Noon.jpg”, NULL);
GtkWidget *dialog = gtk_about_dialog_new();
gtk_about_dialog_set_name(GTK_ABOUT_DIALOG(dialog), “PView”);
gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(dialog), “0.0”);
gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(dialog),
“(c) Yasser Nour”);
gtk_about_dialog_set_comments(GTK_ABOUT_DIALOG(dialog),
“NourView is a too simple pdf viewer”);
gtk_about_dialog_set_website(GTK_ABOUT_DIALOG(dialog),
“http://www.yassernour.wordpress.net”);
gtk_about_dialog_set_logo(GTK_ABOUT_DIALOG(dialog), pixbuf);
g_object_unref(pixbuf), pixbuf = NULL;
gtk_dialog_run(GTK_DIALOG (dialog));
gtk_widget_destroy(dialog);
}
void update_statusbar()
{
gchar *str;
str = g_strdup_printf(“Page %d / %d”,
current_page + 1, total_pages);
gtk_statusbar_push(GTK_STATUSBAR(statusbar),
gtk_statusbar_get_context_id(GTK_STATUSBAR(statusbar), str), str);
g_free(str);
}
void MessageBox (GtkWindow *parentWindow, char *messageValue)
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new (parentWindow, GTK_DIALOG_MODAL, GTK_MESSAGE_INFO, GTK_BUTTONS_OK, messageValue);
gtk_window_set_title (GTK_WINDOW (dialog), “Information”);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
/* Stop the GTK+ main loop function. */
static void destroy_window1 (GtkWidget *window, gpointer data)
{
gtk_main_quit ();
}
/* Return FALSE to destroy the widget. By returning TRUE, you can cancel a delete-event. This can be used to confirm quitting the application. */
static gboolean delete_event_window1 (GtkWidget *window, GdkEvent *event, gpointer data)
{
return (FALSE);
}
static void drawarea1_expose_event( GtkWidget *widget, GdkEventExpose *event )
{
cairo_t *cr;
gdk_window_clear (drawarea1->window);
cr = gdk_cairo_create (drawarea1->window);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
static void redraw_callback (void *data)
{
gtk_widget_queue_draw (drawarea1);
}
static void view_set_page (int page)
{
int err;
int w, h;
double width, height;
cairo_t *cr;
ppage = poppler_document_get_page (document, page);
poppler_page_get_size (ppage, &width, &height);
w = (int) ceil(width);
h = (int) ceil(height);
cairo_surface_destroy (surface);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (surface);
poppler_page_render (ppage, cr);
cairo_destroy (cr);
gtk_widget_set_size_request (drawarea1, w, h);
gtk_widget_queue_draw (drawarea1);
update_statusbar();
}
static void fileopen_activated (GtkMenuItem *fileopen, GtkWindow *parentWindow)
{
MessageBox(parentWindow, “Menu fileopen was clicked.”);
}
static void filequit_activated (GtkMenuItem *filequit, GtkWindow *parentWindow)
{
gtk_main_quit ();
}
static void helphelp_activated (GtkMenuItem *helphelp, GtkWindow *parentWindow)
{
MessageBox(parentWindow, “Menu helphelp was clicked.”);
}
static void helpabout_activated (GtkMenuItem *helpabout, GtkWindow *parentWindow)
{
MessageBox(parentWindow, “Menu helpabout was clicked.”);
}
static void toolback_clicked (GtkToolItem *tooleditcut, GtkWindow *parentWindow)
{
if( current_page != 0)
current_page–;
view_set_page(current_page);
}
static void toolforward_clicked (GtkToolItem *tooleditcopy, GtkWindow *parentWindow)
{
if( current_page != (total_pages – 1))
current_page++;
view_set_page(current_page);
}
static void toolhome_clicked (GtkToolItem *tooleditpaste, GtkWindow *parentWindow)
{
current_page = 0;
view_set_page(0);
}
static void toolquit_clicked (GtkToolItem *tooleditselectall, GtkWindow *parentWindow)
{
gtk_main_quit ();
}
void InitializeUI ()
{
menuGroup = gtk_accel_group_new();
/* initialize main window */
window1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window1), “pView”);
gtk_window_set_default_size (GTK_WINDOW (window1), 400, 200);
gtk_window_maximize (GTK_WINDOW (window1));
/* Connect the main window to the destroy and delete-event signals. */
g_signal_connect (G_OBJECT (window1), “destroy”, G_CALLBACK (destroy_window1), NULL);
g_signal_connect (G_OBJECT (window1), “delete_event”, G_CALLBACK (delete_event_window1), NULL);
vbox1 = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window1), vbox1);
menubar = gtk_menu_bar_new ();
gtk_box_pack_start (GTK_BOX (vbox1), menubar, FALSE, FALSE, 2);
filemenu = gtk_menu_item_new_with_label (“File”);
filemenu_menu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (filemenu), filemenu_menu);
gtk_menu_shell_append (GTK_MENU_SHELL (menubar), filemenu);
fileopen = gtk_image_menu_item_new_from_stock (GTK_STOCK_OPEN, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), fileopen);
g_signal_connect (G_OBJECT (fileopen), “activate”, G_CALLBACK (fileopen_activated), (gpointer) window1);
separator_1 = gtk_separator_menu_item_new ();
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), separator_1);
filequit = gtk_image_menu_item_new_from_stock (GTK_STOCK_QUIT, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (filemenu_menu), filequit);
g_signal_connect (G_OBJECT (filequit), “activate”, G_CALLBACK (filequit_activated), (gpointer) window1);
helpmenu = gtk_menu_item_new_with_label (“Help”);
helpmenu_menu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (helpmenu), helpmenu_menu);
gtk_menu_shell_append (GTK_MENU_SHELL (menubar), helpmenu);
helphelp = gtk_image_menu_item_new_from_stock (GTK_STOCK_HELP, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (helpmenu_menu), helphelp);
g_signal_connect (G_OBJECT (helphelp), “activate”, G_CALLBACK (helphelp_activated), (gpointer) window1);
helpabout = gtk_image_menu_item_new_from_stock (GTK_STOCK_ABOUT, menuGroup);
gtk_menu_shell_append (GTK_MENU_SHELL (helpmenu_menu), helpabout);
g_signal_connect (G_OBJECT (helpabout), “activate”, G_CALLBACK (show_about), (gpointer) window1);
toolbar1 = gtk_toolbar_new ();
gtk_toolbar_set_show_arrow (GTK_TOOLBAR (toolbar1), TRUE);
gtk_toolbar_set_style (GTK_TOOLBAR (toolbar1), GTK_TOOLBAR_BOTH);
gtk_box_pack_start (GTK_BOX (vbox1), toolbar1, FALSE, FALSE, 2);
toolback = gtk_tool_button_new_from_stock (GTK_STOCK_GO_BACK);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolback, 0);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolback), “Previous Page”);
g_signal_connect (G_OBJECT (toolback), “clicked”, G_CALLBACK (toolback_clicked), (gpointer) window1);
toolforward = gtk_tool_button_new_from_stock (GTK_STOCK_GO_FORWARD);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolforward, 1);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolforward), “Next page”);
g_signal_connect (G_OBJECT (toolforward), “clicked”, G_CALLBACK (toolforward_clicked), (gpointer) window1);
toolhome = gtk_tool_button_new_from_stock (GTK_STOCK_HOME);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolhome, 2);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolhome), “Paste the Clipboard”);
g_signal_connect (G_OBJECT (toolhome), “clicked”, G_CALLBACK (toolhome_clicked), (gpointer) window1);
separator_2 = gtk_separator_tool_item_new ();
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), separator_2, 3);
toolquit = gtk_tool_button_new_from_stock (GTK_STOCK_QUIT);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar1), toolquit, 4);
gtk_widget_set_tooltip_text (GTK_WIDGET(toolquit), “exit”);
g_signal_connect (G_OBJECT (toolquit), “clicked”, G_CALLBACK (toolquit_clicked), (gpointer) window1);
drawarea1 = gtk_drawing_area_new();
gtk_box_pack_start (GTK_BOX (vbox1), drawarea1, TRUE, TRUE, 2);
g_signal_connect (G_OBJECT (drawarea1), “expose_event”, G_CALLBACK (drawarea1_expose_event), (gpointer) window1);
statusbar = gtk_statusbar_new();
gtk_box_pack_start(GTK_BOX(vbox1), statusbar, FALSE, TRUE, 1);
gtk_window_add_accel_group( GTK_WINDOW(window1), menuGroup);
}
int main (int argc, char *argv[])
{
gtk_init (&argc, &argv);
if (argc != 2) {
printf(“Usage: viewer <uri>\n”);
return 1;
}
document = poppler_document_new_from_file (argv[1], NULL, NULL);
if (document == NULL)
return -1;
InitializeUI();
total_pages = poppler_document_get_n_pages (document);
view_set_page(0);
gtk_widget_show_all (window1);
gtk_main ();
return (0);
}
Learning ... 
I don’t know if you heard about it, but there is a new language (about 25 years old) called C++. You could’ve done this in 100 lines or so!
There is an even newer language called Python that can probably do the job in 50 lines!
Embedded guys won’t think beyond C 🙂
Nice article by the way! I’m just kidding 🙂
Thank you for posting your code. We’re running and testing it as I write this. But are you aware that there is a memory leak? I was wondering if you had updated your code to remedy this.
Unfortunately I didn’t update this code, It just was a proof of concept, I use this PDF viewer whenever Adobe or evince was too heavy to view large PDFs.
Hello, Thanks for sharing this plugin for double commander.
I am wondering if it is possible to make it to show the pdf files in Fit to Width mode or maybe a specific zoom level (scale) by default?