/*
 * ImageLabeler.h
 *
 *  Created on: Oct 4, 2011
 *      Author: Gapchich Vladislav
 */

#ifndef __IMAGELABELER_H__
#define __IMAGELABELER_H__

#include "ImageHolder.h"
#include "ImageDescriptionForm.h"
#include "OptionsForm.h"

#include <QMainWindow>
#include <QDir>

/* forward declarations */
class QMenuBar;
class QMenu;
class QAction;
class QHBoxLayout;
class QVBoxLayout;
class QGridLayout;
class QPushButton;
class QPixmap;
class QLabel;
class QScrollArea;
class QFrame;
class QListWidget;
class QListWidgetItem;
class QButtonGroup;
class QDomDocument;
class QDomElement;

class ImageLabeler : public QMainWindow
{
	Q_OBJECT
protected:
	/* events */
	void resizeEvent(QResizeEvent *anEvent);
	void mousePressEvent(QMouseEvent *anEvent);
	void wheelEvent(QWheelEvent *anEvent);
	void keyPressEvent(QKeyEvent *anEvent);

	void getImagesFromDir(const QDir &dir);
	void showWarning(const QString text);
	bool askForUnsavedData();
	void loadLegendFromNode(QDomElement *anElement);
	void setPolyFromData(
		QString *aPolyData,
		int *ID
		);
	void setBBoxFromData(
		QString *aBBoxData,
		int *ID
		);
	Polygon polyFromData(
		QString *aPolyData
		);
	Polygon	polyFromString(
		QString *aString,
		int *oldID
		);
	BoundingBox BBoxFromData(
		QString *aBBoxData
		);
	BoundingBox	BBoxFromString(
		QString *aString,
		int *oldID
		);
	void enableTools();
	void disableTools();
	void legendToXml(QDomDocument *aDoc, QDomElement *aRoot);
	void objectsToXml(QDomDocument *aDoc, QDomElement *aRoot);
	void addImage(QString *anImage);

public:
	ImageLabeler(QWidget *aParent = 0);
	virtual ~ImageLabeler();

public slots:
	void addLabel();
	void addLabel(
		int aLabelID,
		bool isMain,
		QString aLabel
	);
	void removeLabel();
	void setLabelID(QListWidgetItem *anItem);
	void addBBoxArea(
		int anID,
		BoundingBox aBBox,
		int itemID = -1
		);
	void addPolyArea(
		int aPolyID,
		Polygon aPoly,
		int itemID = -1
		);
	void deleteArea();
	void editArea();
	void toggleLabelPriority();
	void nextImage();
	void prevImage();
	void editLabel(QListWidgetItem *anItem);
	void saveAllInfo();
	void saveSegmentedPicture();
	void saveLegend();
	void loadImage();
	void loadImages();
	void loadInfo();
	void loadLegendFromFile();
	void setBoundingBoxTool(bool aButtonPressed);
	void setPolygonTool(bool aButtonPressed);
	void generateColors();
	void confirmSelection();
	void clearAll();
	void clearAllTool();
	void clearLabelList();
	void areaListPopupMenu(const QPoint &aPos);
	void labelListPopupMenu(const QPoint &aPos);
	void setDescription(QString aDescription);
	void onImageScaled();
	void onOptionsSet();
	void onSelectionStarted();
	void onAreaItemChange(QListWidgetItem *);
	void onAreaEdit();
	void setPureData();
	void setLabelColor();
	void setLabelColor(int anID, QColor aColor);
	void viewNormal();
	void viewSegmented();
	void interruptSearch();
	void selectImage(QListWidgetItem *);

private:
	/* menu */
	QMenuBar *menu_bar_;
	QMenu *menu_file_;
	QMenu *menu_view_;
	QMenu *menu_edit_;
	QMenu *menu_help_;
	/* menu file */
	QAction *action_open_images_;
	QAction *action_open_image_;
	QAction *action_open_labeled_image_;
	QAction *action_load_legend_;
	QAction *action_save_labels_;
	QAction *action_save_segmented_;
	QAction *action_save_legend_;
	QAction *action_quit_;
	/* menu view */
	QAction *action_view_normal_;
	QAction *action_view_segmented_;
	/* menu edit */
	QAction *action_undo_;
	QAction *action_redo_;
	QAction *action_bound_box_tool_;
	QAction *action_polygon_tool_;
	QAction *action_tagging_tool_;
	QAction *action_add_description_;
	QAction *action_options_;

	QAction *action_about_;
	QAction *action_help_content_;

	/* popup menu */
	QMenu *popup_area_list_;

	QAction *action_delete_area_;
	QAction *action_edit_area_;

	QMenu *popup_label_list_;

	QAction *action_toggle_priority_;
	QAction *action_set_color_;
	QAction *action_delete_label_;

	/* layouts */
	QHBoxLayout *layout_main_;
	QVBoxLayout *layout_left_;
	QVBoxLayout *layout_toolbox_;
	QVBoxLayout *layout_center_;
	QVBoxLayout *layout_frame_image_;
	QGridLayout *layout_image_widget_;
	QHBoxLayout *layout_center_buttons_;
	QVBoxLayout *layout_right_;
	QVBoxLayout *layout_labelbox_;
	QHBoxLayout *layout_labelbox_buttons_;

	/* widgets */
	QWidget *central_widget_;
	//QFrame *frame_image_;
	QScrollArea *frame_image_;
	QFrame *frame_center_;
	QFrame *frame_toolbox_;
	QFrame *frame_labelbox_;
	QPixmap *image_;
	ImageHolder *image_holder_;
	QLabel *label_toolbox_;
	QLabel *label_list_areas_;
	QLabel *label_list_images_;
	QListWidget *list_label_;
	QListWidget *list_areas_;
	QListWidget *list_images_widget_;
	ImageDescriptionForm image_description_form_;
	OptionsForm options_form_;

	QPushButton *button_bound_box_tool_;
	QPushButton *button_polygon_tool_;
	QPushButton *button_tagging_tool_;
	QPushButton *button_clear_selection_tool_;
	QPushButton *button_delete_all_labels_;
	QPushButton *button_generate_colors_;
	QPushButton *button_add_label_;
	QPushButton *button_remove_label_;
	QPushButton *button_prev_image_;
	QPushButton *button_next_image_;
	QPushButton *button_confirm_selection_;

	QButtonGroup *group_tools_;

	/* variables */
	Qt::KeyboardModifiers keyboard_modifier_;
	int main_label_;
	int **pure_data_;
	int label_ID_;
	int image_ID_;

	QString image_description_;
	QStringList *list_images_;
	//QStringList::iterator current_image_;
	QString current_image_;
	QString segmented_image_;
	QList< BoundingBox * > list_bounding_box_;
	QList< Polygon * > list_polygon_;
	QList< uint > list_label_colors_;

	QString old_area_string_;

	/* options */
	bool auto_color_generation_;

	/* flags */
	bool interrupt_search_;
	bool unsaved_data_;
};

#endif /* __IMAGELABELER_H__ */

/*
 *
 */