/*************************************************************************/
/*  editor_texture_import_plugin.h                                       */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
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/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
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/*************************************************************************/
#ifndef EDITOR_TEXTURE_IMPORT_PLUGIN_H
#define EDITOR_TEXTURE_IMPORT_PLUGIN_H

#include "editor/editor_dir_dialog.h"
#include "editor/editor_file_system.h"
#include "editor/editor_import_export.h"
#include "scene/gui/dialogs.h"
#include "scene/gui/file_dialog.h"
#include "scene/gui/label.h"
#include "scene/gui/line_edit.h"
#include "scene/gui/option_button.h"
#include "scene/gui/progress_bar.h"
#include "scene/gui/slider.h"
#include "scene/gui/spin_box.h"
#include "scene/gui/tree.h"

class EditorNode;
class EditorTextureImportDialog;

class EditorTextureImportPlugin : public EditorImportPlugin {

	OBJ_TYPE(EditorTextureImportPlugin, EditorImportPlugin);

public:
	enum Mode {
		MODE_TEXTURE_2D,
		MODE_TEXTURE_3D,
		MODE_ATLAS,
		MODE_LARGE,
		MODE_MAX
	};

private:
	EditorNode *editor;
	EditorTextureImportDialog *dialog;
	static EditorTextureImportPlugin *singleton;
	//used by other importers such as mesh

	Error _process_texture_data(Ref<ImageTexture> &texture, int format, float quality, int flags, EditorExportPlatform::ImageCompression p_compr, int tex_flags, float shrink);
	void compress_image(EditorExportPlatform::ImageCompression p_mode, Image &image, bool p_smaller);

	uint32_t texture_flags_to_export_flags(uint32_t p_tex_flags) const;

public:
	static EditorTextureImportPlugin *get_singleton() { return singleton; }

	enum ImageFormat {

		IMAGE_FORMAT_UNCOMPRESSED,
		IMAGE_FORMAT_COMPRESS_DISK_LOSSLESS,
		IMAGE_FORMAT_COMPRESS_DISK_LOSSY,
		IMAGE_FORMAT_COMPRESS_RAM,
	};

	enum ImageFlags {

		IMAGE_FLAG_STREAM_FORMAT = 1,
		IMAGE_FLAG_FIX_BORDER_ALPHA = 2,
		IMAGE_FLAG_ALPHA_BIT = 4, //hint for compressions that use a bit for alpha
		IMAGE_FLAG_COMPRESS_EXTRA = 8, // used for pvrtc2
		IMAGE_FLAG_NO_MIPMAPS = 16, //normal for 2D games
		IMAGE_FLAG_REPEAT = 32, //usually disabled in 2D
		IMAGE_FLAG_FILTER = 64, //almost always enabled
		IMAGE_FLAG_PREMULT_ALPHA = 128, //almost always enabled
		IMAGE_FLAG_CONVERT_TO_LINEAR = 256, //convert image to linear
		IMAGE_FLAG_CONVERT_NORMAL_TO_XY = 512, //convert image to linear
		IMAGE_FLAG_USE_ANISOTROPY = 1024, //convert image to linear
	};

	virtual String get_name() const;
	virtual String get_visible_name() const;
	virtual void import_dialog(const String &p_from = "");
	virtual Error import(const String &p_path, const Ref<ResourceImportMetadata> &p_from);
	virtual Error import2(const String &p_path, const Ref<ResourceImportMetadata> &p_from, EditorExportPlatform::ImageCompression p_compr, bool p_external = false);
	virtual Vector<uint8_t> custom_export(const String &p_path, const Ref<EditorExportPlatform> &p_platform);

	virtual void import_from_drop(const Vector<String> &p_drop, const String &p_dest_path);
	virtual void reimport_multiple_files(const Vector<String> &p_list);
	virtual bool can_reimport_multiple_files() const;

	EditorTextureImportPlugin(EditorNode *p_editor = NULL);
};

class EditorTextureExportPlugin : public EditorExportPlugin {

	OBJ_TYPE(EditorTextureExportPlugin, EditorExportPlugin);

public:
	virtual Vector<uint8_t> custom_export(String &p_path, const Ref<EditorExportPlatform> &p_platform);
	EditorTextureExportPlugin();
};

class EditorImportTextureOptions : public VBoxContainer {

	OBJ_TYPE(EditorImportTextureOptions, VBoxContainer);

	OptionButton *format;
	VBoxContainer *quality_vb;
	HSlider *quality;
	Tree *flags;
	Vector<TreeItem *> items;

	bool updating;

	void _changedp(int p_value);
	void _changed();

protected:
	static void _bind_methods();
	void _notification(int p_what);

public:
	void set_format(EditorTextureImportPlugin::ImageFormat p_format);
	EditorTextureImportPlugin::ImageFormat get_format() const;

	void set_flags(uint32_t p_flags);
	uint32_t get_flags() const;

	void set_quality(float p_quality);
	float get_quality() const;

	void show_2d_notice();

	EditorImportTextureOptions();
};
#endif // EDITOR_TEXTURE_IMPORT_PLUGIN_H