/* GDK - The GIMP Drawing Kit
 * gdkdisplay-broadway.c
 * 
 * Copyright 2001 Sun Microsystems Inc.
 * Copyright (C) 2004 Nokia Corporation
 *
 * Erwann Chenede <erwann.chenede@sun.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include "gdkdisplay-broadway.h"

#include "gdkcairocontext-broadway.h"
#include "gdkdisplay.h"
#include "gdkeventsourceprivate.h"
#include "gdkmonitor-broadway.h"
#include "gdkseat-broadway.h"
#include "gdkdevice-broadway.h"
#include "gdkdeviceprivate.h"
#include <gdk/gdktextureprivate.h>
#include "gdkprivate.h"

#include <glib.h>
#include <glib/gprintf.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>

static void   gdk_broadway_display_dispose            (GObject            *object);
static void   gdk_broadway_display_finalize           (GObject            *object);

#if 0
#define DEBUG_WEBSOCKETS 1
#endif

G_DEFINE_TYPE (GdkBroadwayDisplay, gdk_broadway_display, GDK_TYPE_DISPLAY)

static void
gdk_broadway_display_init (GdkBroadwayDisplay *display)
{
  gdk_display_set_input_shapes (GDK_DISPLAY (display), FALSE);

  display->id_ht = g_hash_table_new (NULL, NULL);

  display->monitor = g_object_new (GDK_TYPE_BROADWAY_MONITOR,
                                   "display", display,
                                   NULL);
  gdk_monitor_set_manufacturer (display->monitor, "browser");
  gdk_monitor_set_model (display->monitor, "0");
  display->scale_factor = 1;
  gdk_monitor_set_geometry (display->monitor, &(GdkRectangle) { 0, 0, 1024, 768 });
  gdk_monitor_set_physical_size (display->monitor, 1024 * 25.4 / 96, 768 * 25.4 / 96);
  gdk_monitor_set_scale_factor (display->monitor, 1);
}

static void
gdk_event_init (GdkDisplay *display)
{
  GdkBroadwayDisplay *broadway_display;

  broadway_display = GDK_BROADWAY_DISPLAY (display);
  broadway_display->event_source = _gdk_broadway_event_source_new (display);
}

void
_gdk_broadway_display_size_changed (GdkDisplay                      *display,
                                    BroadwayInputScreenResizeNotify *msg)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);
  GdkMonitor *monitor;
  GdkRectangle current_size;
  GList *toplevels, *l;

  monitor = broadway_display->monitor;
  gdk_monitor_get_geometry (monitor, ¤t_size);

  if (msg->width == current_size.width &&
      msg->height == current_size.height &&
      (msg->scale == broadway_display->scale_factor ||
       broadway_display->fixed_scale))
    return;

  if (!broadway_display->fixed_scale)
    broadway_display->scale_factor = msg->scale;

  gdk_monitor_set_geometry (monitor, &(GdkRectangle) { 0, 0, msg->width, msg->height });
  gdk_monitor_set_scale_factor (monitor, msg->scale);
  gdk_monitor_set_physical_size (monitor, msg->width * 25.4 / 96, msg->height * 25.4 / 96);

  toplevels =  broadway_display->toplevels;
  for (l = toplevels; l != NULL; l = l->next)
    {
      GdkBroadwaySurface *toplevel = l->data;

      if (toplevel->maximized)
        gdk_broadway_surface_move_resize (GDK_SURFACE (toplevel),
                                          0, 0,
                                          msg->width, msg->height);
    }
}

static GdkDevice *
create_core_pointer (GdkDisplay *display)
{
  return g_object_new (GDK_TYPE_BROADWAY_DEVICE,
                       "name", "Core Pointer",
                       "source", GDK_SOURCE_MOUSE,
                       "has-cursor", TRUE,
                       "display", display,
                       NULL);
}

static GdkDevice *
create_core_keyboard (GdkDisplay *display)
{
  return g_object_new (GDK_TYPE_BROADWAY_DEVICE,
                       "name", "Core Keyboard",
                       "source", GDK_SOURCE_KEYBOARD,
                       "has-cursor", FALSE,
                       "display", display,
                       NULL);
}

static GdkDevice *
create_pointer (GdkDisplay *display)
{
  return g_object_new (GDK_TYPE_BROADWAY_DEVICE,
                       "name", "Pointer",
                       "source", GDK_SOURCE_MOUSE,
                       "has-cursor", TRUE,
                       "display", display,
                       NULL);
}

static GdkDevice *
create_keyboard (GdkDisplay *display)
{
  return g_object_new (GDK_TYPE_BROADWAY_DEVICE,
                       "name", "Keyboard",
                       "source", GDK_SOURCE_KEYBOARD,
                       "has-cursor", FALSE,
                       "display", display,
                       NULL);
}

static GdkDevice *
create_touchscreen (GdkDisplay *display)
{
  return g_object_new (GDK_TYPE_BROADWAY_DEVICE,
                       "name", "Touchscreen",
                       "source", GDK_SOURCE_TOUCHSCREEN,
                       "has-cursor", FALSE,
                       "display", display,
                       NULL);
}

GdkDisplay *
_gdk_broadway_display_open (const char *display_name)
{
  GdkDisplay *display;
  GdkBroadwayDisplay *broadway_display;
  GError *error = NULL;
  GdkSeat *seat;

  display = g_object_new (GDK_TYPE_BROADWAY_DISPLAY, NULL);
  broadway_display = GDK_BROADWAY_DISPLAY (display);

  broadway_display->core_pointer = create_core_pointer (display);
  broadway_display->core_keyboard = create_core_keyboard (display);
  broadway_display->pointer = create_pointer (display);
  broadway_display->keyboard = create_keyboard (display);
  broadway_display->touchscreen = create_touchscreen (display);

  _gdk_device_set_associated_device (broadway_display->core_pointer, broadway_display->core_keyboard);
  _gdk_device_set_associated_device (broadway_display->core_keyboard, broadway_display->core_pointer);
  _gdk_device_set_associated_device (broadway_display->pointer, broadway_display->core_pointer);
  _gdk_device_set_associated_device (broadway_display->keyboard, broadway_display->core_keyboard);
  _gdk_device_set_associated_device (broadway_display->touchscreen, broadway_display->core_pointer);
  _gdk_device_add_physical_device (broadway_display->core_pointer, broadway_display->touchscreen);

  seat = gdk_broadway_seat_new_for_logical_pair (broadway_display->core_pointer,
                                                 broadway_display->core_keyboard);

  gdk_display_add_seat (display, seat);
  gdk_broadway_seat_add_physical_device (GDK_BROADWAY_SEAT (seat), broadway_display->pointer);
  gdk_broadway_seat_add_physical_device (GDK_BROADWAY_SEAT (seat), broadway_display->keyboard);
  gdk_broadway_seat_add_physical_device (GDK_BROADWAY_SEAT (seat), broadway_display->touchscreen);
  g_object_unref (seat);

  gdk_event_init (display);

  if (display_name == NULL)
    display_name = g_getenv ("BROADWAY_DISPLAY");

  broadway_display->server = _gdk_broadway_server_new (display, display_name, &error);
  if (broadway_display->server == NULL)
    {
      GDK_DEBUG (MISC, "Unable to init Broadway server: %s", error->message);
      g_error_free (error);
      return NULL;
    }

  g_signal_emit_by_name (display, "opened");

  return display;
}

static const char *
gdk_broadway_display_get_name (GdkDisplay *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return (char *) "Broadway";
}

static void
gdk_broadway_display_beep (GdkDisplay *display)
{
  g_return_if_fail (GDK_IS_DISPLAY (display));
}

static void
gdk_broadway_display_sync (GdkDisplay *display)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);

  g_return_if_fail (GDK_IS_BROADWAY_DISPLAY (display));

  _gdk_broadway_server_sync (broadway_display->server);
}

static void
gdk_broadway_display_flush (GdkDisplay *display)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);

  g_return_if_fail (GDK_IS_BROADWAY_DISPLAY (display));

  _gdk_broadway_server_flush (broadway_display->server);
}

static void
gdk_broadway_display_dispose (GObject *object)
{
  GdkBroadwayDisplay *self = GDK_BROADWAY_DISPLAY (object);

  if (self->event_source)
    {
      g_source_destroy (self->event_source);
      g_source_unref (self->event_source);
      self->event_source = NULL;
    }
  if (self->monitors)
    {
      g_list_store_remove_all (self->monitors);
      g_clear_object (&self->monitors);
    }

  G_OBJECT_CLASS (gdk_broadway_display_parent_class)->dispose (object);
}

static void
gdk_broadway_display_finalize (GObject *object)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (object);

  /* Keymap */
  if (broadway_display->keymap)
    g_object_unref (broadway_display->keymap);

  _gdk_broadway_cursor_display_finalize (GDK_DISPLAY(broadway_display));

  g_object_unref (broadway_display->monitor);

  G_OBJECT_CLASS (gdk_broadway_display_parent_class)->finalize (object);
}

static void
gdk_broadway_display_notify_startup_complete (GdkDisplay  *display,
           const char *startup_id)
{
}

static gulong
gdk_broadway_display_get_next_serial (GdkDisplay *display)
{
  GdkBroadwayDisplay *broadway_display;
  broadway_display = GDK_BROADWAY_DISPLAY (display);

  return _gdk_broadway_server_get_next_serial (broadway_display->server);
}

/**
 * gdk_broadway_display_show_keyboard:
 * @display: the broadway display
 *
 * Shows the keyboard.
 *
 * Deprecated: 4.18: The Broadway backend will be removed in GTK 5
 **/
void
gdk_broadway_display_show_keyboard (GdkBroadwayDisplay *display)
{
  g_return_if_fail (GDK_IS_BROADWAY_DISPLAY (display));

  _gdk_broadway_server_set_show_keyboard (display->server, TRUE);
}

/**
 * gdk_broadway_display_hide_keyboard:
 * @display: the broadway display
 *
 * Hides the keyboard.
 *
 * Deprecated: 4.18: The Broadway backend will be removed in GTK 5
 **/
void
gdk_broadway_display_hide_keyboard (GdkBroadwayDisplay *display)
{
  g_return_if_fail (GDK_IS_BROADWAY_DISPLAY (display));

  _gdk_broadway_server_set_show_keyboard (display->server, FALSE);
}

/**
 * gdk_broadway_display_set_surface_scale:
 * @display: (type GdkBroadwayDisplay): the display
 * @scale: The new scale value, as an integer >= 1
 *
 * Forces a specific window scale for all windows on this display,
 * instead of using the default or user configured scale. This
 * is can be used to disable scaling support by setting @scale to
 * 1, or to programmatically set the window scale.
 *
 * Once the scale is set by this call it will not change in
 * response to later user configuration changes.
 *
 * Since: 4.4
 * Deprecated: 4.18: The Broadway backend will be removed in GTK 5
 */
void
gdk_broadway_display_set_surface_scale (GdkDisplay *display,
                                        int         scale)
{
  GdkBroadwayDisplay *self;

  g_return_if_fail (GDK_IS_BROADWAY_DISPLAY (display));
  g_return_if_fail (scale > 0);

  self = GDK_BROADWAY_DISPLAY (display);

  self->scale_factor = scale;
  self->fixed_scale = TRUE;
  gdk_monitor_set_scale_factor (self->monitor, scale);
}

/**
 * gdk_broadway_display_get_surface_scale:
 * @display: (type GdkBroadwayDisplay): the display
 *
 * Gets the surface scale that was previously set by the client or
 * gdk_broadway_display_set_surface_scale().
 *
 * Returns: the scale for surfaces
 *
 * Since: 4.4
 * Deprecated: 4.18: The Broadway backend will be removed in GTK 5
 */
int
gdk_broadway_display_get_surface_scale (GdkDisplay *display)
{
  GdkBroadwayDisplay *self;

  g_return_val_if_fail (GDK_IS_BROADWAY_DISPLAY (display), 1);

  self = GDK_BROADWAY_DISPLAY (display);

  return self->scale_factor;
}

static GListModel *
gdk_broadway_display_get_monitors (GdkDisplay *display)
{
  GdkBroadwayDisplay *self = GDK_BROADWAY_DISPLAY (display);

  if (self->monitors == NULL)
    {
      self->monitors = g_list_store_new (GDK_TYPE_MONITOR);
      g_list_store_append (self->monitors, self->monitor);
    }

  return G_LIST_MODEL (self->monitors);
}

static gboolean
gdk_broadway_display_get_setting (GdkDisplay *display,
                                  const char *name,
                                  GValue     *value)
{
  return FALSE;
}

typedef struct {
  int id;
  GdkDisplay *display;
  GList *textures;
} BroadwayTextureData;

static void
broadway_texture_data_free (BroadwayTextureData *data)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (data->display);

  gdk_broadway_server_release_texture (broadway_display->server, data->id);
  g_object_unref (data->display);
  g_free (data);
}

guint32
gdk_broadway_display_ensure_texture (GdkDisplay *display,
                                     GdkTexture *texture)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);
  BroadwayTextureData *data;

  data = g_object_get_data (G_OBJECT (texture), "broadway-data");
  if (data == NULL)
    {
      guint32 id = gdk_broadway_server_upload_texture (broadway_display->server, texture);

      data = g_new0 (BroadwayTextureData, 1);
      data->id = id;
      data->display = g_object_ref (display);
     g_object_set_data_full (G_OBJECT (texture), "broadway-data", data, (GDestroyNotify)broadway_texture_data_free);
    }

  return data->id;
}

static gboolean
flush_idle (gpointer data)
{
  GdkDisplay *display = data;
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);

  broadway_display->idle_flush_id = 0;
  gdk_display_flush (display);

  return G_SOURCE_REMOVE;
}

void
gdk_broadway_display_flush_in_idle (GdkDisplay *display)
{
  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);

  if (broadway_display->idle_flush_id == 0)
    {
      broadway_display->idle_flush_id = g_idle_add (flush_idle, g_object_ref (display));
      gdk_source_set_static_name_by_id (broadway_display->idle_flush_id, "[gtk] flush_idle");
    }
}


static void
gdk_broadway_display_class_init (GdkBroadwayDisplayClass * class)
{
  GObjectClass *object_class = G_OBJECT_CLASS (class);
  GdkDisplayClass *display_class = GDK_DISPLAY_CLASS (class);

  object_class->dispose = gdk_broadway_display_dispose;
  object_class->finalize = gdk_broadway_display_finalize;

  display_class->toplevel_type = GDK_TYPE_BROADWAY_TOPLEVEL;
  display_class->popup_type = GDK_TYPE_BROADWAY_POPUP;
  display_class->cairo_context_type = GDK_TYPE_BROADWAY_CAIRO_CONTEXT;

  display_class->get_name = gdk_broadway_display_get_name;
  display_class->beep = gdk_broadway_display_beep;
  display_class->sync = gdk_broadway_display_sync;
  display_class->flush = gdk_broadway_display_flush;
  display_class->queue_events = _gdk_broadway_display_queue_events;

  display_class->get_next_serial = gdk_broadway_display_get_next_serial;
  display_class->notify_startup_complete = gdk_broadway_display_notify_startup_complete;
  display_class->get_keymap = _gdk_broadway_display_get_keymap;

  display_class->get_monitors = gdk_broadway_display_get_monitors;
  display_class->get_setting = gdk_broadway_display_get_setting;
}