added configure utility for P.E.Op.S OpenGL plugin

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@23612 e17a0e51-4ae3-4d35-97c3-1a29b211df97

1 files changed, 155 insertions, 0 deletions

diff --git a/plugins/peopsxgl/gpucfg/support.c b/plugins/peopsxgl/gpucfg/support.c
new file mode 100644
index 00000000..042b0168
--- /dev/null
+++ b/plugins/peopsxgl/gpucfg/support.c
@@ -0,0 +1,155 @@
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#include "support.h"
+
+/* This is an internally used function to check if a pixmap file exists. */
+static gchar* check_file_exists        (const gchar     *directory,
+                                        const gchar     *filename);
+
+/* This is an internally used function to create pixmaps. */
+static GtkWidget* create_dummy_pixmap  (GtkWidget       *widget);
+
+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)
+{
+  GdkColormap *colormap;
+  GdkPixmap *gdkpixmap;
+  GdkBitmap *mask;
+  GtkWidget *pixmap;
+
+  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;
+}
+
+static GList *pixmaps_directories = NULL;
+
+/* Use this function to set the directory containing installed pixmaps. */
+void
+add_pixmap_directory                   (const gchar     *directory)
+{
+  pixmaps_directories = g_list_prepend (pixmaps_directories,
+                                        g_strdup (directory));
+}
+
+/* This is an internally used function to create pixmaps. */
+GtkWidget*
+create_pixmap                          (GtkWidget       *widget,
+                                        const gchar     *filename)
+{
+  gchar *found_filename = NULL;
+  GdkColormap *colormap;
+  GdkPixmap *gdkpixmap;
+  GdkBitmap *mask;
+  GtkWidget *pixmap;
+  GList *elem;
+
+  if (!filename || !filename[0])
+      return create_dummy_pixmap (widget);
+
+  /* We first try any pixmaps directories set by the application. */
+  elem = pixmaps_directories;
+  while (elem)
+    {
+      found_filename = check_file_exists ((gchar*)elem->data, filename);
+      if (found_filename)
+        break;
+      elem = elem->next;
+    }
+
+  /* If we haven't found the pixmap, try the source directory. */
+  if (!found_filename)
+    {
+      found_filename = check_file_exists ("../pixmaps", filename);
+    }
+
+  if (!found_filename)
+    {
+      g_warning ("Couldn't find pixmap file: %s", filename);
+      return create_dummy_pixmap (widget);
+    }
+
+  colormap = gtk_widget_get_colormap (widget);
+  gdkpixmap = gdk_pixmap_colormap_create_from_xpm (NULL, colormap, &mask,
+                                                   NULL, found_filename);
+  if (gdkpixmap == NULL)
+    {
+      g_warning ("Error loading pixmap file: %s", found_filename);
+      g_free (found_filename);
+      return create_dummy_pixmap (widget);
+    }
+  g_free (found_filename);
+  pixmap = gtk_pixmap_new (gdkpixmap, mask);
+  gdk_pixmap_unref (gdkpixmap);
+  gdk_bitmap_unref (mask);
+  return pixmap;
+}
+
+/* This is an internally used function to check if a pixmap file exists. */
+gchar*
+check_file_exists                      (const gchar     *directory,
+                                        const gchar     *filename)
+{
+  gchar *full_filename;
+  struct stat s;
+  gint status;
+
+  full_filename = (gchar*) g_malloc (strlen (directory) + 1
+                                     + strlen (filename) + 1);
+  strcpy (full_filename, directory);
+  strcat (full_filename, G_DIR_SEPARATOR_S);
+  strcat (full_filename, filename);
+
+  status = stat (full_filename, &s);
+  if (status == 0 && S_ISREG (s.st_mode))
+    return full_filename;
+  g_free (full_filename);
+  return NULL;
+}