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caracal

This is an example of a basic PDF viewer.

Code: (C)

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#include <stdio.h>
#include <stdlib.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <cairo.h>
#include <poppler.h>

/* gcc `pkg-config --cflags --libs gtk+-2.0 poppler-glib` -o pdfviewer pdfviewer.c */

static PopplerDocument* doc;
static PopplerPage* page;

static void
on_destroy(GtkWidget* w, gpointer data) {
gtk_main_quit();
}

static gboolean
on_expose(GtkWidget* w, GdkEventExpose* e, gpointer data) {
cairo_t* cr;
cr = gdk_cairo_create(w->window);
poppler_page_render(page, cr);
cairo_destroy(cr);
return FALSE;
}

int main(int argc, char* argv[]) {
GtkWidget* win;
GError* err = NULL;

if (argc != 2) {
printf("Useage: pdfviewer <uri>\n");
return 1;
}

gtk_init(&argc, &argv);

doc = poppler_document_new_from_file(argv[1], NULL, &err);
if (!doc) {
printf("%s\n", err->message);
g_object_unref(err);
return 2;
}

page = poppler_document_get_page(doc, 0);
if(!page) {
printf("Could not open first page of document\n");
g_object_unref(doc);
return 3;
}

int pages = poppler_document_get_n_pages(doc);
printf("There are %d pages in this pdf.\n", pages);

win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(win), "destroy", G_CALLBACK(on_destroy), NULL);
g_signal_connect(G_OBJECT(win), "expose-event", G_CALLBACK(on_expose), NULL);
gtk_widget_set_app_paintable(win, TRUE);
gtk_widget_show_all(win);

gtk_main();

g_object_unref(page);
g_object_unref(doc);

return 0;
}

Usage: ./pdfviewer "file:/home/caracal/pdfviewer/ooc.pdf"

Portable Document Format (PDF)
Poppler "Poppler is a PDF rendering library and is used with cairo to render PDF's"
[HTML] http://poppler.freedesktop.org/
[Example Viewer] http://www.gtkforums.com/viewtopic.php?p=9086#9086

libharu "libHaru is a free, cross platform, open source library for generating PDF files."
[HTML] http://libharu.org/wiki/Main_Page
[HTML] http://libharu.org/wiki/Documentation
[NOTE] Cairo can also produce PDF's but libharu does a way better job and has tons more features.

Last edited by caracal on Fri Apr 24, 2009 8:10 pm; edited 3 times in total

wjgiddings · Posted: Thu Apr 23, 2009 11:48 am Post subject:

Sorry,

Compiled and ran the sample. I found it crashed every time.

WJG

caracal · Posted: Thu Apr 23, 2009 11:53 am Post subject:

Make sure you URI is correct.
Usage: pdfviewer <uri>
Example: ./pdfviewer "file:/home/caracal/pdfviewer/ooc.pdf"
Has to be "file:/"
This is a minimal example.

wjgiddings

Thanks, I should have read the instructions more closely.

I've just quickly skimmed over the documentation and it wouldn't be too much of a task to wrap a Gnocl layer around the Popper package and build a gnocl::pdfviewer widget.

Thanks too for the posting,

Will

caracal · Posted: Thu Apr 23, 2009 12:21 pm Post subject:

Check Gtk+ Tutorials & Resources
http://www.gtkforums.com/viewtopic.php?t=988

You might find some more stuff that interest you for Gnocl.
Its updated almost daily.

ramesh · GTK+ Guru Joined: 16 Nov 2006 Posts: 270 Location: INDIA

hi
i compiled the code above.
i am using vista.

Code: (C)

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pdf_viewer.c:7:21: poppler.h: No such file or directory
pdf_viewer.c:11: error: syntax error before '*' token
pdf_viewer.c:11: warning: type defaults to `int' in declaration of `doc'
pdf_viewer.c:11: warning: data definition has no type or storage class
pdf_viewer.c:12: error: syntax error before '*' token
pdf_viewer.c:12: warning: type defaults to `int' in declaration of `page'
pdf_viewer.c:12: warning: data definition has no type or storage class
pdf_viewer.c: In function `on_expose':
pdf_viewer.c:23: warning: implicit declaration of function `poppler_page_render'
pdf_viewer.c: In function `main':
pdf_viewer.c:40: warning: implicit declaration of function `poppler_document_new_from_file'
pdf_viewer.c:40: warning: assignment makes pointer from integer without a cast
pdf_viewer.c:47: warning: implicit declaration of function `poppler_document_get_page'
pdf_viewer.c:47: warning: assignment makes pointer from integer without a cast
pdf_viewer.c:54: warning: implicit declaration of function `poppler_document_get_n_pages'

how to install poppler in windows vista..

any help it should be appreciiable

caracal · Posted: Thu Apr 23, 2009 12:53 pm Post subject:

I don't use windows so i wouldn't be able to answer you question but i did find this via google.
http://cgit.freedesktop.org/poppler/poppler/tree/README.windows

m.nour · Joined: 07 Feb 2010 Posts: 3

thanks a lot, that was really helpful