static GtkWidget * do_image (const char *filename) { GtkWidget *frame; GtkWidget *vbox; GtkWidget *image; GtkWidget *label; GtkWidget *window; gchar *str, *escaped; LoadContext *lc; window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title (GTK_WINDOW (window), "Image Loading"); gtk_container_set_border_width (GTK_CONTAINER (window), 8); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_set_border_width (GTK_CONTAINER (vbox), 8); gtk_container_add (GTK_CONTAINER (window), vbox); label = gtk_label_new (NULL); gtk_label_set_line_wrap (GTK_LABEL (label), TRUE); escaped = g_markup_escape_text (filename, -1); str = g_strdup_printf ("Progressively loading: <b>%s</b>", escaped); gtk_label_set_markup (GTK_LABEL (label), str); g_free (escaped); g_free (str); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); image = gtk_image_new_from_pixbuf (NULL); gtk_container_add (GTK_CONTAINER (frame), image); lc = get_load_context (image); lc->window = window; lc->filename = g_strdup (filename); start_progressive_loading (image); g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL); g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL); gtk_widget_show_all (window); return window; }
GtkWidget * do_images (GtkWidget *do_widget) { GtkWidget *video; GtkWidget *frame; GtkWidget *vbox; GtkWidget *hbox; GtkWidget *base_vbox; GtkWidget *image; GtkWidget *picture; GtkWidget *label; GtkWidget *button; GdkPaintable *paintable; GIcon *gicon; if (!window) { window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget)); gtk_window_set_title (GTK_WINDOW (window), "Images"); g_signal_connect (window, "destroy", G_CALLBACK (gtk_widget_destroyed), &window); g_signal_connect (window, "destroy", G_CALLBACK (cleanup_callback), NULL); base_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); g_object_set (base_vbox, "margin", 16, NULL); gtk_container_add (GTK_CONTAINER (window), base_vbox); hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 16); gtk_container_add (GTK_CONTAINER (base_vbox), hbox); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_add (GTK_CONTAINER (hbox), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Image loaded from a file</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_container_add (GTK_CONTAINER (vbox), frame); image = gtk_image_new_from_icon_name ("gtk3-demo"); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); gtk_container_add (GTK_CONTAINER (frame), image); /* Animation */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Animation loaded from a file</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_container_add (GTK_CONTAINER (vbox), frame); picture = gtk_picture_new_for_resource ("/images/floppybuddy.gif"); gtk_container_add (GTK_CONTAINER (frame), picture); /* Symbolic icon */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Symbolic themed icon</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_container_add (GTK_CONTAINER (vbox), frame); gicon = g_themed_icon_new_with_default_fallbacks ("battery-caution-charging-symbolic"); image = gtk_image_new_from_gicon (gicon); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); gtk_container_add (GTK_CONTAINER (frame), image); /* Progressive */ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_add (GTK_CONTAINER (hbox), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Progressive image loading</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_container_add (GTK_CONTAINER (vbox), frame); /* Create an empty image for now; the progressive loader * will create the pixbuf and fill it in. */ picture = gtk_picture_new (); gtk_container_add (GTK_CONTAINER (frame), picture); start_progressive_loading (picture); /* Video */ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_add (GTK_CONTAINER (hbox), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Displaying video</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_container_add (GTK_CONTAINER (vbox), frame); video = gtk_video_new_for_resource ("/images/gtk-logo.webm"); gtk_media_stream_set_loop (gtk_video_get_media_stream (GTK_VIDEO (video)), TRUE); gtk_container_add (GTK_CONTAINER (frame), video); /* Widget paintables */ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_add (GTK_CONTAINER (hbox), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>GtkWidgetPaintable</u>"); gtk_container_add (GTK_CONTAINER (vbox), label); paintable = gtk_widget_paintable_new (do_widget); picture = gtk_picture_new_for_paintable (paintable); gtk_widget_set_size_request (picture, 100, 100); gtk_widget_set_valign (picture, GTK_ALIGN_START); gtk_container_add (GTK_CONTAINER (vbox), picture); /* Sensitivity control */ button = gtk_toggle_button_new_with_mnemonic ("_Insensitive"); gtk_container_add (GTK_CONTAINER (base_vbox), button); g_signal_connect (button, "toggled", G_CALLBACK (toggle_sensitivity_callback), base_vbox); } if (!gtk_widget_get_visible (window)) gtk_widget_show (window); else gtk_widget_destroy (window); return window; }
GtkWidget * do_images (GtkWidget *do_widget) { GtkWidget *frame; GtkWidget *vbox; GtkWidget *image; GtkWidget *label; GtkWidget *button; GIcon *gicon; if (!window) { window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_screen (GTK_WINDOW (window), gtk_widget_get_screen (do_widget)); gtk_window_set_title (GTK_WINDOW (window), "Images"); g_signal_connect (window, "destroy", G_CALLBACK (gtk_widget_destroyed), &window); g_signal_connect (window, "destroy", G_CALLBACK (cleanup_callback), NULL); gtk_container_set_border_width (GTK_CONTAINER (window), 8); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8); gtk_container_set_border_width (GTK_CONTAINER (vbox), 8); gtk_container_add (GTK_CONTAINER (window), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Image loaded from a file</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); image = gtk_image_new_from_icon_name ("gtk3-demo", GTK_ICON_SIZE_DIALOG); gtk_container_add (GTK_CONTAINER (frame), image); /* Animation */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Animation loaded from a file</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); image = gtk_image_new_from_resource ("/images/floppybuddy.gif"); gtk_container_add (GTK_CONTAINER (frame), image); /* Symbolic icon */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Symbolic themed icon</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); gicon = g_themed_icon_new_with_default_fallbacks ("battery-caution-charging-symbolic"); image = gtk_image_new_from_gicon (gicon, GTK_ICON_SIZE_DIALOG); gtk_container_add (GTK_CONTAINER (frame), image); /* Progressive */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Progressive image loading</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_widget_set_halign (frame, GTK_ALIGN_CENTER); gtk_widget_set_valign (frame, GTK_ALIGN_CENTER); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); /* Create an empty image for now; the progressive loader * will create the pixbuf and fill it in. */ image = gtk_image_new_from_pixbuf (NULL); gtk_container_add (GTK_CONTAINER (frame), image); start_progressive_loading (image); /* Sensitivity control */ button = gtk_toggle_button_new_with_mnemonic ("_Insensitive"); gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0); g_signal_connect (button, "toggled", G_CALLBACK (toggle_sensitivity_callback), vbox); } if (!gtk_widget_get_visible (window)) gtk_widget_show_all (window); else gtk_widget_destroy (window); return window; }
GtkWidget * do_images (GtkWidget *do_widget) { GtkWidget *frame; GtkWidget *vbox; GtkWidget *image; GtkWidget *label; GtkWidget *align; GtkWidget *button; GdkPixbuf *pixbuf; GError *error = NULL; char *filename; if (!window) { window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_screen (GTK_WINDOW (window), gtk_widget_get_screen (do_widget)); gtk_window_set_title (GTK_WINDOW (window), "Images"); g_signal_connect (window, "destroy", G_CALLBACK (gtk_widget_destroyed), &window); g_signal_connect (window, "destroy", G_CALLBACK (cleanup_callback), NULL); gtk_container_set_border_width (GTK_CONTAINER (window), 8); vbox = gtk_vbox_new (FALSE, 8); gtk_container_set_border_width (GTK_CONTAINER (vbox), 8); gtk_container_add (GTK_CONTAINER (window), vbox); label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Image loaded from a file</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); /* The alignment keeps the frame from growing when users resize * the window */ align = gtk_alignment_new (0.5, 0.5, 0, 0); gtk_container_add (GTK_CONTAINER (align), frame); gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0); /* demo_find_file() looks in the the current directory first, * so you can run gtk-demo without installing GTK, then looks * in the location where the file is installed. */ pixbuf = NULL; filename = demo_find_file ("gtk-logo-rgb.gif", &error); if (filename) { pixbuf = gdk_pixbuf_new_from_file (filename, &error); g_free (filename); } if (error) { /* This code shows off error handling. You can just use * gtk_image_new_from_file() instead if you don't want to report * errors to the user. If the file doesn't load when using * gtk_image_new_from_file(), a "missing image" icon will * be displayed instead. */ GtkWidget *dialog; dialog = gtk_message_dialog_new (GTK_WINDOW (window), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Unable to open image file 'gtk-logo-rgb.gif': %s", error->message); g_error_free (error); g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), NULL); gtk_widget_show (dialog); } image = gtk_image_new_from_pixbuf (pixbuf); gtk_container_add (GTK_CONTAINER (frame), image); /* Animation */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Animation loaded from a file</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); /* The alignment keeps the frame from growing when users resize * the window */ align = gtk_alignment_new (0.5, 0.5, 0, 0); gtk_container_add (GTK_CONTAINER (align), frame); gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0); filename = demo_find_file ("floppybuddy.gif", NULL); image = gtk_image_new_from_file (filename); g_free (filename); gtk_container_add (GTK_CONTAINER (frame), image); /* Progressive */ label = gtk_label_new (NULL); gtk_label_set_markup (GTK_LABEL (label), "<u>Progressive image loading</u>"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); /* The alignment keeps the frame from growing when users resize * the window */ align = gtk_alignment_new (0.5, 0.5, 0, 0); gtk_container_add (GTK_CONTAINER (align), frame); gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 0); /* Create an empty image for now; the progressive loader * will create the pixbuf and fill it in. */ image = gtk_image_new_from_pixbuf (NULL); gtk_container_add (GTK_CONTAINER (frame), image); start_progressive_loading (image); /* Sensitivity control */ button = gtk_toggle_button_new_with_mnemonic ("_Insensitive"); gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0); g_signal_connect (button, "toggled", G_CALLBACK (toggle_sensitivity_callback), vbox); } if (!GTK_WIDGET_VISIBLE (window)) { gtk_widget_show_all (window); } else { gtk_widget_destroy (window); window = NULL; } return window; }