Added support for loading next, prev image

1 files changed, 100 insertions, 9 deletions

diff --git a/main.c b/main.c
index 7743c8e..5ac2806 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,12 @@
+#include <curses.h>
+#include <dirent.h>
 #include <gtk-3.0/gtk/gtk.h>
+#include <libgen.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "dir.h"
+
 #define TIMEOUT 20
 #define ZOOM_FACTOR 0.1
 
@@ -15,6 +23,34 @@ int pixbuf_width, pixbuf_height;
 double aspect_ratio;
 double curr_zoom = 1.0;
 enum scale_mode curr_scale_mod;
+GError *error = NULL;
+
+char *curr_file_name;
+GDir *dir;
+char **file_list;
+int curr_file_index, file_list_count;
+
+void print_supported_formats()
+{
+    GSList *list, *it;
+    GdkPixbufFormat *format;
+    gchar **extensions;
+    gchar *ex;
+
+    list = gdk_pixbuf_get_formats();
+    if (list != NULL) {
+        for (it = list; it->next != NULL; it = it->next) {
+            format = (GdkPixbufFormat *)it->data;
+            g_print("%s:", gdk_pixbuf_format_get_description(format));
+            extensions = gdk_pixbuf_format_get_extensions(format);
+            for (ex = *extensions; *ex; ex++) {
+                g_print(" %s", ex);
+            }
+            g_print("\n");
+        }
+        g_slist_free(list);
+    }
+}
 
 void fit_image()
 {
@@ -50,6 +86,52 @@ void fit_image()
     gtk_image_set_from_pixbuf(GTK_IMAGE(image), GDK_PIXBUF(curr_pixbuf));
 }
 
+void next()
+{
+    if (curr_file_index >= file_list_count - 1) {
+        return;
+    }
+    curr_file_index++;
+    curr_file_name = file_list[curr_file_index];
+    g_print("qwe2: %s\n", curr_file_name);
+    g_object_unref(pixbuf);
+    pixbuf = gdk_pixbuf_new_from_file(curr_file_name, &error);
+    if (error) {
+        g_warning("gdk_pixbuf_new_from_file() failed with error: %s\n",
+                  error->message);
+        g_clear_error(&error);
+        return;
+    }
+    pixbuf_width = gdk_pixbuf_get_width(GDK_PIXBUF(pixbuf));
+    pixbuf_height = gdk_pixbuf_get_height(GDK_PIXBUF(pixbuf));
+    aspect_ratio = (double)pixbuf_width / (double)pixbuf_height;
+    curr_zoom = 1.0;
+    fit_image();
+}
+
+void prev()
+{
+    if (curr_file_index <= 0) {
+        return;
+    }
+    curr_file_index--;
+    curr_file_name = file_list[curr_file_index];
+    g_print("qwe2: %s\n", curr_file_name);
+    g_object_unref(pixbuf);
+    pixbuf = gdk_pixbuf_new_from_file(curr_file_name, &error);
+    if (error) {
+        g_warning("gdk_pixbuf_new_from_file() failed with error: %s\n",
+                  error->message);
+        g_clear_error(&error);
+        return;
+    }
+    pixbuf_width = gdk_pixbuf_get_width(GDK_PIXBUF(pixbuf));
+    pixbuf_height = gdk_pixbuf_get_height(GDK_PIXBUF(pixbuf));
+    aspect_ratio = (double)pixbuf_width / (double)pixbuf_height;
+    curr_zoom = 1.0;
+    fit_image();
+}
+
 void zoom(int type)
 {
     if (type == 0) {
@@ -85,17 +167,22 @@ static gboolean key_press(GtkWindow *window, GdkEvent *event, gpointer data)
         fit_image();
         return FALSE;
     case GDK_KEY_plus:
-    case GDK_KEY_ScrollUp:
         zoom(1);
         return FALSE;
     case GDK_KEY_minus:
-    case GDK_KEY_ScrollDown:
         zoom(-1);
         return FALSE;
     case GDK_KEY_equal:
-    case GDK_KEY_ScrollClick:
         zoom(0);
         return FALSE;
+    case GDK_KEY_n:
+    case GDK_KEY_j:
+        next();
+        return FALSE;
+    case GDK_KEY_p:
+    case GDK_KEY_k:
+        prev();
+        return FALSE;
     default:
         return TRUE;
     }
@@ -140,8 +227,6 @@ gboolean configure_callback(GtkWindow *window, GdkEvent *event, gpointer data)
 
 static void activate(GtkApplication *app, gpointer user_data)
 {
-    GError *error = NULL;
-
     window = gtk_application_window_new(app);
     gtk_window_set_title(GTK_WINDOW(window), "qwe");
     gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
@@ -153,23 +238,29 @@ static void activate(GtkApplication *app, gpointer user_data)
     g_signal_connect(G_OBJECT(window), "scroll-event",
                      G_CALLBACK(scroll_callback), NULL);
 
-    pixbuf = gdk_pixbuf_new_from_file(
-        "/home/nirav/Downloads/Saved Pictures/bash help shortcuts.png", &error);
+    char *curr_filename =
+        "/home/nirav/Downloads/Saved Pictures/bash help shortcuts.png";
+
+    curr_file_index = scan(curr_filename, &file_list, &file_list_count);
+    printf("num %d %d\n", curr_file_index, file_list_count);
+    printf("file %s\n", file_list[curr_file_index]);
+
+    pixbuf = gdk_pixbuf_new_from_file(curr_filename, &error);
     if (error) {
         g_warning("gdk_pixbuf_new_from_file() failed with error: %s\n",
                   error->message);
         g_clear_error(&error);
         return;
     }
-    image = gtk_image_new_from_pixbuf(GDK_PIXBUF(pixbuf));
     pixbuf_width = gdk_pixbuf_get_width(GDK_PIXBUF(pixbuf));
     pixbuf_height = gdk_pixbuf_get_height(GDK_PIXBUF(pixbuf));
     aspect_ratio = (double)pixbuf_width / (double)pixbuf_height;
+
+    image = gtk_image_new_from_pixbuf(GDK_PIXBUF(pixbuf));
     GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
     gtk_container_add(GTK_CONTAINER(scrolled_window), GTK_WIDGET(image));
-
     gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(scrolled_window));
     gtk_widget_show_all(GTK_WIDGET(window));
 }