diff options
Diffstat (limited to '')
| -rw-r--r-- | opening.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/opening.c b/opening.c new file mode 100644 index 0000000..3e98740 --- /dev/null +++ b/opening.c @@ -0,0 +1,173 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +int +load_image(struct file *file, int errors_to_stderr) +{ + const char *error_message; + GError *error = NULL; + GtkWidget *dialog; + GdkPixbuf *image; + GdkPixbufLoader *loader = NULL; + struct stat st; + unsigned char buffer[8 << 10]; + ssize_t r; + int fd, ret = 1; + + if (!file) + return 0; + + fd = open(file->path, O_RDONLY | O_NOCTTY); + if (fd < 0) + goto fail_errno; + + if (fstat(fd, &st)) + goto fail_errno; + + if (!S_ISREG(st.st_mode)) { + error_message = "Not a regular file"; + goto fail; + } + + loader = gdk_pixbuf_loader_new(); + if (!loader) + goto fail_errno; + for (;;) { + r = read(fd, buffer, sizeof(buffer)); + if (r <= 0) { + if (!r) + break; + if (errno == EINTR) + continue; + goto fail_errno; + } + if (!gdk_pixbuf_loader_write(loader, buffer, (size_t)r, &error)) + goto fail_gerror; + } + if (!gdk_pixbuf_loader_close(loader, &error)) { + fail_gerror: + error_message = error->message; + goto fail; + } + image = gdk_pixbuf_loader_get_pixbuf(loader); + if (!image) { + error_message = "Unsupported image format"; + goto fail; + } + g_object_ref(image); + + g_clear_object(&file->image); + + file->size = st.st_size; + file->image = image; + +out: + g_clear_object(&loader); + if (fd >= 0) + close(fd); + return ret; + +fail_errno: + error_message = strerror(errno); + +fail: + if (errors_to_stderr) { + weprintf("Cannot open %s: %s", file->path, error_message); + } else { + dialog = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, + GTK_BUTTONS_CLOSE, "Cannot open %s", file->path); + gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), "%s", error_message); + gtk_dialog_run(GTK_DIALOG(dialog)); + gtk_widget_destroy(dialog); + } + + g_clear_error(&error); + ret = 0; + goto out; +} + +static void +preview_image(GtkFileChooser *chooser, GtkWidget *preview_widget) +{ + char *filename; + GdkPixbuf *preview; + GtkWidget *image, *label; + + filename = gtk_file_chooser_get_preview_filename(chooser); + preview = !filename ? NULL : + gdk_pixbuf_new_from_file_at_scale(filename, PREVIEW_WIDTH, PREVIEW_HEIGHT, 1, NULL); + image = g_object_get_data(G_OBJECT(preview_widget), "image"); + label = g_object_get_data(G_OBJECT(preview_widget), "label"); + gtk_image_set_from_pixbuf(GTK_IMAGE(image), preview); + if (preview) { + gtk_widget_show(image); + gtk_widget_hide(label); + } else { + gtk_widget_hide(image); + gtk_widget_show(label); + } + gtk_file_chooser_set_preview_widget_active(chooser, 1); + if (preview) + g_object_unref(preview); + g_free(filename); +} + +static const char * +get_home_directory(void) +{ + static const char *home_directory = NULL; + + struct passwd *pwd; + + if (home_directory) + return home_directory; + + home_directory = getenv("HOME"); + if (!home_directory || !*home_directory) { + pwd = getpwuid(getuid()); + if (pwd && pwd->pw_dir && *pwd->pw_dir) + home_directory = pwd->pw_dir; + else + home_directory = "."; + } + + return home_directory; +} + +GtkFileChooser * +construct_chooser(void) +{ + GtkWidget *widget, *image, *label, *preview; + GtkFileChooser *chooser; + + widget = gtk_file_chooser_dialog_new("Open", + GTK_WINDOW(window), + GTK_FILE_CHOOSER_ACTION_OPEN, + GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, + GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, + NULL); + chooser = GTK_FILE_CHOOSER(widget); + + g_object_set(gtk_settings_get_default(), "gtk-recent-files-enabled", 0, NULL); + gtk_file_chooser_set_select_multiple(chooser, 1); + gtk_file_chooser_set_current_folder(chooser, get_home_directory()); + gtk_file_chooser_set_local_only(chooser, 1); + gtk_file_chooser_set_do_overwrite_confirmation(chooser, 0); + + preview = gtk_vbox_new(0, 6); + image = gtk_image_new(); + label = gtk_label_new("Preview"); + gtk_widget_set_size_request(preview, PREVIEW_WIDTH, PREVIEW_HEIGHT); + gtk_widget_set_size_request(image, PREVIEW_WIDTH, PREVIEW_HEIGHT); + gtk_box_pack_start(GTK_BOX(preview), image, 0, 0, 0u); + gtk_box_pack_start(GTK_BOX(preview), label, 0, 0, 0u); + g_object_set_data(G_OBJECT(preview), "image", image); + g_object_set_data(G_OBJECT(preview), "label", label); + gtk_file_chooser_set_preview_widget(chooser, preview); + gtk_file_chooser_set_use_preview_label(chooser, 0); + gtk_file_chooser_set_preview_widget_active(chooser, 1); + gtk_widget_hide(image); + g_signal_connect(chooser, "update-preview", G_CALLBACK(&preview_image), preview); + + return chooser; +} |