/*
    This file is part of darktable,
    copyright (c) 2014 tobias ellinghaus.

    darktable 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.

    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <Carbon/Carbon.h>
#include <ApplicationServices/ApplicationServices.h>
#include <CoreServices/CoreServices.h>
#include <AppKit/AppKit.h>
#include <gtk/gtk.h>
#include <gdk/gdkquartz.h>
#include <glib.h>
#include "osx.h"

void dt_osx_autoset_dpi(GtkWidget *widget)
{
  GdkScreen *screen = gtk_widget_get_screen(widget);
  if(!screen)
    screen = gdk_screen_get_default();
  if(!screen)
    return;

  CGDirectDisplayID id = CGMainDisplayID();
  CGSize size_in_mm = CGDisplayScreenSize(id);
  int width = CGDisplayPixelsWide(id);
  int height = CGDisplayPixelsHigh(id);
  gdk_screen_set_resolution(screen,
      25.4 * sqrt(width * width + height * height)
           / sqrt(size_in_mm.width * size_in_mm.width + size_in_mm.height * size_in_mm.height));
}

float dt_osx_get_ppd()
{
  NSScreen *nsscreen = [NSScreen mainScreen];
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
  if([nsscreen respondsToSelector: NSSelectorFromString(@"backingScaleFactor")]) {
    return [[nsscreen valueForKey: @"backingScaleFactor"] floatValue];
  } else {
    return [[nsscreen valueForKey: @"userSpaceScaleFactor"] floatValue];
  }
#else
  return [[nsscreen valueForKey: @"userSpaceScaleFactor"] floatValue];
#endif
}

static void dt_osx_disable_fullscreen(GtkWidget *widget)
{
#ifdef GDK_WINDOWING_QUARTZ
  GdkWindow *window = gtk_widget_get_window(widget);
  if(window) {
    NSWindow *native = gdk_quartz_window_get_nswindow(window);
    [native setCollectionBehavior: ([native collectionBehavior] & ~NSWindowCollectionBehaviorFullScreenPrimary) | NSWindowCollectionBehaviorFullScreenAuxiliary];
  }
#endif
}

void dt_osx_disallow_fullscreen(GtkWidget *widget)
{
#ifdef GDK_WINDOWING_QUARTZ
  if(gtk_widget_get_realized(widget))
    dt_osx_disable_fullscreen(widget);
  else
    g_signal_connect(G_OBJECT(widget), "realize", G_CALLBACK(dt_osx_disable_fullscreen), NULL);
#endif
}

gboolean dt_osx_file_trash(const char *filename, GError **error)
{
  @autoreleasepool {
    NSFileManager *fm = [NSFileManager defaultManager];
    NSError *err;

    NSURL *url = [NSURL fileURLWithPath:@(filename)];

    if ([fm respondsToSelector:@selector(trashItemAtURL:resultingItemURL:error:)]) {
      if (![fm trashItemAtURL:url resultingItemURL:nil error:&err]) {
        if (error != NULL)
          *error = g_error_new_literal(G_IO_ERROR, err.code == NSFileNoSuchFileError ? G_IO_ERROR_NOT_FOUND : G_IO_ERROR_FAILED, err.localizedDescription.UTF8String);
        return FALSE;
      }
    } else {
      if (error != NULL)
        *error = g_error_new_literal(G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "trash not supported on OS X versions < 10.8");
      return FALSE;
    }
  }
  return TRUE;
}

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