fl_windowing_channel.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_SHELL_PLATFORM_LINUX_FL_WINDOWING_CHANNEL_H_
#define FLUTTER_SHELL_PLATFORM_LINUX_FL_WINDOWING_CHANNEL_H_
 
#include "flutter/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_method_response.h"
 
G_BEGIN_DECLS
 
G_DECLARE_FINAL_TYPE(FlWindowingChannel,
                     fl_windowing_channel,
                     FL,
                     WINDOWING_CHANNEL,
                     GObject);
 
// States that a window can be in.
typedef enum {
  FL_WINDOW_STATE_UNDEFINED,
  FL_WINDOW_STATE_RESTORED,
  FL_WINDOW_STATE_MAXIMIZED,
  FL_WINDOW_STATE_MINIMIZED
} FlWindowState;
 
// Size dimensions used in windowing channel.
typedef struct {
  double width;
  double height;
} FlWindowingSize;
 
/**
 * FlWindowingChannel:
 *
 * #FlWindowingChannel is a channel that implements the shell side
 * of SystemChannels.windowing from the Flutter services library.
 */
 
typedef struct {
  FlMethodResponse* (*create_regular)(FlWindowingSize* size,
                                      FlWindowingSize* min_size,
                                      FlWindowingSize* max_size,
                                      const gchar* title,
                                      FlWindowState state,
                                      gpointer user_data);
  FlMethodResponse* (*modify_regular)(int64_t view_id,
                                      FlWindowingSize* size,
                                      const gchar* title,
                                      FlWindowState state,
                                      gpointer user_data);
  FlMethodResponse* (*destroy_window)(int64_t view_id, gpointer user_data);
} FlWindowingChannelVTable;
 
/**
 * fl_windowing_channel_new:
 * @messenger: an #FlBinaryMessenger
 * @vtable: callbacks for incoming method calls.
 * @user_data: data to pass in callbacks.
 *
 * Creates a new channel that sends handled windowing requests from the
 * platform.
 *
 * Returns: a new #FlWindowingChannel
 */
FlWindowingChannel* fl_windowing_channel_new(FlBinaryMessenger* messenger,
                                             FlWindowingChannelVTable* vtable,
                                             gpointer user_data);
 
FlMethodResponse* fl_windowing_channel_make_create_regular_response(
    int64_t view_id,
    FlWindowingSize* size,
    FlWindowState state);
 
FlMethodResponse* fl_windowing_channel_make_modify_regular_response();
 
FlMethodResponse* fl_windowing_channel_make_destroy_window_response();
 
G_END_DECLS
 
#endif  // FLUTTER_SHELL_PLATFORM_LINUX_FL_WINDOWING_CHANNEL_H_