/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 2009 Martin Nordholts <martinn@src.gnome.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <gegl.h>
#include <gtk/gtk.h>

#include "display/display-types.h"

#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpimagewindow.h"

#include "widgets/gimpuimanager.h"

#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimplayer.h"

#include "gimp-app-test-utils.h"


static void
gimp_test_utils_set_env_to_subdir (const gchar *root_env_var,
                                   const gchar *subdir,
                                   const gchar *target_env_var)
{
  const gchar *root_dir   = NULL;
  gchar       *target_dir = NULL;

  /* Get root dir */
  root_dir = g_getenv (root_env_var);
  if (! root_dir)
    g_printerr ("*\n"
                "*  The env var %s is not set, you are probably running\n"
                "*  in a debugger. Set it manually, e.g.:\n"
                "*\n"
                "*    set env %s=%s/source/gimp\n"
                "*\n",
                root_env_var,
                root_env_var, g_get_home_dir ());

  /* Construct path and setup target env var */
  target_dir = g_build_filename (root_dir, subdir, NULL);
  g_setenv (target_env_var, target_dir, TRUE);
  g_free (target_dir);
}


/**
 * gimp_test_utils_set_gimp2_directory:
 * @root_env_var: Either "GIMP_TESTING_ABS_TOP_SRCDIR" or
 *                "GIMP_TESTING_ABS_TOP_BUILDDIR"
 * @subdir:       Subdir, may be %NULL
 *
 * Sets GIMP2_DIRECTORY to the source dir @root_env_var/@subdir. The
 * environment variables is set up by the test runner, see Makefile.am
 **/
void
gimp_test_utils_set_gimp2_directory (const gchar *root_env_var,
                                     const gchar *subdir)
{
  gimp_test_utils_set_env_to_subdir (root_env_var,
                                     subdir,
                                     "GIMP2_DIRECTORY" /*target_env_var*/);
}

/**
 * gimp_test_utils_setup_menus_dir:
 *
 * Sets GIMP_TESTING_MENUS_DIR to "$top_srcdir/menus".
 **/
void
gimp_test_utils_setup_menus_dir (void)
{
  /* GIMP_TESTING_ABS_TOP_SRCDIR is set by the automake test runner,
   * see Makefile.am
   */
  gimp_test_utils_set_env_to_subdir ("GIMP_TESTING_ABS_TOP_SRCDIR" /*root_env_var*/,
                                     "menus" /*subdir*/,
                                     "GIMP_TESTING_MENUS_DIR" /*target_env_var*/);
}

/**
 * gimp_test_utils_create_image:
 * @gimp:   A #Gimp instance.
 * @width:  Width of image (and layer)
 * @height: Height of image (and layer)
 *
 * Creates a new image of a given size with one layer of same size and
 * a display.
 *
 * Returns: The new #GimpImage.
 **/
void
gimp_test_utils_create_image (Gimp *gimp,
                              gint  width,
                              gint  height)
{
  GimpImage *image;
  GimpLayer *layer;

  image = gimp_image_new (gimp,
                          width,
                          height,
                          GIMP_RGB);

  layer = gimp_layer_new (image,
                          width,
                          height,
                          GIMP_RGBA_IMAGE,
                          "layer1",
                          1.0,
                          GIMP_NORMAL_MODE);

  gimp_image_add_layer (image,
                        layer,
                        NULL /*parent*/,
                        0 /*position*/,
                        FALSE /*push_undo*/);

  gimp_create_display (gimp,
                       image,
                       GIMP_UNIT_PIXEL,
                       1.0 /*scale*/);
}

/**
 * gimp_test_utils_synthesize_key_event:
 * @widget: Widget to target.
 * @keyval: Keyval, e.g. GDK_Return
 *
 * Simulates a keypress and release with gdk_test_simulate_key().
 **/
void
gimp_test_utils_synthesize_key_event (GtkWidget *widget,
                                      guint      keyval)
{
  gdk_test_simulate_key (gtk_widget_get_window (widget),
                         -1, -1, /*x, y*/
                         keyval,
                         0 /*modifiers*/,
                         GDK_KEY_PRESS);
  gdk_test_simulate_key (gtk_widget_get_window (widget),
                         -1, -1, /*x, y*/
                         keyval,
                         0 /*modifiers*/,
                         GDK_KEY_RELEASE);
}

/**
 * gimp_test_utils_get_ui_manager:
 * @gimp: The #Gimp instance.
 *
 * Returns the "best" #GimpUIManager to use when performing
 * actions. It gives the ui manager of the empty display if it exists,
 * otherwise it gives it the ui manager of the first display.
 *
 * Returns: The #GimpUIManager.
 **/
GimpUIManager *
gimp_test_utils_get_ui_manager (Gimp *gimp)
{
  GimpDisplay       *display      = NULL;
  GimpDisplayShell  *shell        = NULL;
  GtkWidget         *toplevel     = NULL;
  GimpImageWindow   *image_window = NULL;
  GimpUIManager     *ui_manager   = NULL;

  display = GIMP_DISPLAY (gimp_get_empty_display (gimp));

  /* If there were not empty display, assume that there is at least
   * one image display and use that
   */
  if (! display)
    display = GIMP_DISPLAY (gimp_get_display_iter (gimp)->data);

  shell            = gimp_display_get_shell (display);
  toplevel         = gtk_widget_get_toplevel (GTK_WIDGET (shell));
  image_window     = GIMP_IMAGE_WINDOW (toplevel);
  ui_manager       = gimp_image_window_get_ui_manager (image_window);

  return ui_manager;
}