IMHO, you should use GdkPixbuf provided with Gtk+-2.0 to display the
jpeg images.
Le jeudi 01 septembre 2005 à 09:33 +0530, Vinayak J a écrit :
>
> Dear Friends,
> I'm Vinayak and I'm working on a program which displays the JPEG
> and the BMP and the XPM images on the screen through a window widget.
> Right now I've written code, which is pasted below, which is
> displaying only the XPM images.
> I want to display the JPEG and the BMP images also in that window.
>
> As I'm a beginner in this world, I desperately need your help in
> this regard. Please help me.
>
> One more info. I'm making use of the GdkImlib also. But, due to
> unavailability of the proper documents regarding this, I couldn't
> procede.
>
> #ifdef HAVE_CONFIG_H
> # include <config.h>
> #endif
>
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <unistd.h>
> #include <string.h>
>
> #include <gnome.h>
>
> #include "support.h"
>
> /* This is an internally used function to create pixmaps. */
> static GtkWidget* create_dummy_pixmap (GtkWidget *widget,
> gboolean
> gnome_pixmap);
>
> /**********************************************
> * This is to define an alias for the widgets *
> * defined in the main window *
> **********************************************/
> GtkWidget*
> lookup_widget (GtkWidget *widget,
> const gchar *widget_name)
> {
> GtkWidget *parent, *found_widget;
>
> for (;;)
> {
> if (GTK_IS_MENU (widget))
> parent = gtk_menu_get_attach_widget (GTK_MENU (widget));
> else
> parent = widget->parent;
> if (parent == NULL)
> break;
> widget = parent;
> }
>
> found_widget = (GtkWidget*) gtk_object_get_data (GTK_OBJECT
> (widget),
> widget_name);
> if (!found_widget)
> g_warning ("Widget not found: %s", widget_name);
> return found_widget;
> }
>
> /* This is a dummy pixmap we use when a pixmap can't be found. */
> static char *dummy_pixmap_xpm[] = {
> /* columns rows colors chars-per-pixel */
> "1 1 1 1",
> " c None",
> /* pixels */
> " ",
> " "
> };
>
> /* This is an internally used function to create pixmaps. */
> static GtkWidget*
> create_dummy_pixmap (GtkWidget *widget,
> gboolean
> gnome_pixmap)
> {
> GdkColormap *colormap;
> GdkPixmap *gdkpixmap;
> GdkBitmap *mask;
> GtkWidget *pixmap;
>
> if (gnome_pixmap)
> {
> return gnome_pixmap_new_from_xpm_d (dummy_pixmap_xpm);
> }
>
> colormap = gtk_widget_get_colormap (widget);
> gdkpixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, colormap,
> &mask,
> NULL,
> dummy_pixmap_xpm);
> if (gdkpixmap == NULL)
> g_error ("Couldn't create replacement pixmap.");
> pixmap = gtk_pixmap_new (gdkpixmap, mask);
> gdk_pixmap_unref (gdkpixmap);
> gdk_bitmap_unref (mask);
> return pixmap;
> }
>
> /* This is an internally used function to create pixmaps. */
> GtkWidget*
> create_pixmap (GtkWidget *widget,
> const gchar *filename,
> gboolean
> gnome_pixmap)
> {
> GtkWidget *pixmap;
> GdkColormap *colormap;
> GdkPixmap *gdkpixmap;
> GdkBitmap *mask;
> gchar *pathname;
>
> if (!filename || !filename[0])
> return NULL;
> // return create_dummy_pixmap (widget, gnome_pixmap);
>
> pathname = gnome_pixmap_file (filename);
> if (!pathname)
> {
> Dummy_Display(pixmap,filename);
> // g_warning (_("Couldn't find pixmap file: %s"), filename);
> return create_dummy_pixmap (widget, gnome_pixmap);
> }
>
> if (gnome_pixmap)
> {
> pixmap = gnome_pixmap_new_from_file (pathname);
> g_free (pathname);
> return pixmap;
> }
>
> colormap = gtk_widget_get_colormap (widget);
> gdkpixmap = gdk_pixmap_colormap_create_from_xpm (NULL, colormap,
> &mask,
> NULL, pathname);
> if (gdkpixmap == NULL)
> {
> g_warning (_("Couldn't create pixmap from file: %s"),
> pathname);
> g_free (pathname);
> return create_dummy_pixmap (widget, gnome_pixmap);
> }
> g_free (pathname);
>
> pixmap = gtk_pixmap_new (gdkpixmap, mask);
> gdk_pixmap_unref (gdkpixmap);
> gdk_bitmap_unref (mask);
> return pixmap;
> }
>
> /* This is an internally used function to create imlib images. */
> GdkImlibImage*
> create_image (const gchar *filename)
> {
> GdkImlibImage *image;
> gchar *pathname;
>
> pathname = gnome_pixmap_file (filename);
> if (!pathname)
> {
> g_warning (_("Couldn't find pixmap file: %s"), filename);
> return NULL;
> }
>
> image = gdk_imlib_load_image (pathname);
> g_free (pathname);
> return image;
> }
>
>
>
> With Regards,
>
> Vinayak B. Joshi
>
> " Earn To live. Don't live to earn."
>
> ______________________________________________________________________
> _______________________________________________
>
> gtk-list@xxxxxxxxx
> http://mail.gnome.org/mailman/listinfo/gtk-list
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