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//========================================================================
//
// GDKSplashOutputDev.cc
//
// Copyright 2003 Glyph & Cog, LLC
// Copyright 2004 Red Hat, Inc. (GDK port)
//
//========================================================================
#include <config.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#include <math.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <poppler.h>
typedef struct
{
GtkWidget *window;
GtkWidget *sw;
GtkWidget *drawing_area;
GtkWidget *spin_button;
PopplerPage *page;
PopplerDocument *document;
cairo_surface_t *surface;
int *window_count;
} View;
static void
drawing_area_expose (GtkWidget *drawing_area,
GdkEventExpose *event,
void *data)
{
View *v = (View*) data;
GdkRectangle document;
GdkRectangle draw;
cairo_t *cr;
gdk_window_clear (drawing_area->window);
cr = gdk_cairo_create (drawing_area->window);
cairo_set_source_surface (cr, v->surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
static void
view_set_page (View *v, int page)
{
int err;
int w, h;
double width, height;
cairo_t *cr;
v->page = poppler_document_get_page (v->document, page);
poppler_page_get_size (v->page, &width, &height);
w = (int) ceil(width);
h = (int) ceil(height);
cairo_surface_destroy (v->surface);
v->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (v->surface);
poppler_page_render (v->page, cr);
cairo_destroy (cr);
gtk_widget_set_size_request (v->drawing_area, w, h);
gtk_widget_queue_draw (v->drawing_area);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (v->spin_button), page);
}
static void
redraw_callback (void *data)
{
View *v = (View*) data;
gtk_widget_queue_draw (v->drawing_area);
}
static void
page_changed_callback (GtkSpinButton *button, View *v)
{
int page;
page = gtk_spin_button_get_value_as_int (button);
view_set_page (v, page);
}
static void
destroy_window_callback (GtkWindow *window, View *v)
{
if (--(*v->window_count) == 0)
gtk_main_quit();
}
static View*
view_new (const char *filename, int *window_count)
{
View *v;
GtkWidget *window;
GtkWidget *drawing_area;
GtkWidget *sw;
GtkWidget *vbox, *hbox;
GtkWidget *spin_button;
int n_pages;
v = g_new0 (View, 1);
v->document = poppler_document_new_from_file (filename, NULL, NULL);
if (v->document == NULL)
return NULL;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
vbox = gtk_vbox_new(FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), vbox);
drawing_area = gtk_drawing_area_new ();
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_box_pack_end (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw),
drawing_area);
n_pages = poppler_document_get_n_pages (v->document);
spin_button = gtk_spin_button_new_with_range (0, n_pages - 1, 1);
g_signal_connect (G_OBJECT (spin_button), "value-changed",
G_CALLBACK (page_changed_callback), v);
hbox = gtk_hbox_new (FALSE, 5);
gtk_box_pack_end (GTK_BOX (hbox), spin_button, FALSE, TRUE, 0);
gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
gtk_widget_show_all (window);
gtk_widget_realize (window);
v->window = window;
v->drawing_area = drawing_area;
v->sw = sw;
v->window_count = window_count;
v->spin_button = spin_button;
g_signal_connect (drawing_area,
"expose_event",
G_CALLBACK (drawing_area_expose),
(void*) v);
g_signal_connect (window,
"destroy",
G_CALLBACK (destroy_window_callback),
(void*) v);
return v;
}
static int option_page = 0;
static GOptionEntry demo_options[] = {
{ "page", 0, 0, G_OPTION_ARG_INT, &option_page, "Page number", "PAGE" },
{ NULL }
};
int
main (int argc, char *argv [])
{
View *v;
int i, window_count;
GOptionContext *ctx;
ctx = g_option_context_new("FILENAME ...");
g_option_context_add_main_entries(ctx, demo_options, "main");
g_option_context_parse(ctx, &argc, &argv, NULL);
g_option_context_free(ctx);
gtk_init (&argc, &argv);
if (argc == 1)
{
fprintf (stderr, "usage: %s PDF-FILES...\n", g_basename (argv[0]));
return -1;
}
window_count = 0;
for (i = 1; i < argc; i++) {
v = view_new (argv[i], &window_count);
if (v == NULL) {
g_printerr ("Error loading %s\n", argv[i]);
continue;
}
view_set_page (v, option_page);
window_count++;
}
if (window_count > 0)
gtk_main ();
return 0;
}
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