FileDiffWidget.h
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FileDiffWidget.h
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	#ifndef FILEDIFFWIDGET_H
	#define FILEDIFFWIDGET_H

	#include "FileDiffSliderWidget.h"
	#include "FileViewWidget.h"
	#include "Git.h"
	#include "MainWindow.h"
	#include "texteditor/AbstractCharacterBasedApplication.h"
	#include <QDialog>
	#include <memory>

	namespace Ui {
	class FileDiffWidget;
	}

	enum class ViewType {
	None,
	Left,
	Right
	};

	using TextDiffLine = Document::Line;
	using TextDiffLineList = QList<Document::Line>;

	struct ObjectContent {
	QString id;
	QString path;
	QByteArray bytes;
	TextDiffLineList lines;
	};
	using ObjectContentPtr = std::shared_ptr<ObjectContent>;

	class QTableWidgetItem;

	class FileDiffWidget : public QWidget {
	Q_OBJECT
	friend class BigDiffWindow;
	public:
	struct DiffData {
	ObjectContentPtr left;
	ObjectContentPtr right;
	std::vector<std::string> original_lines;
	DiffData()
	{
	clear();
	}
	void clear()
	{
	left = std::make_shared<ObjectContent>();
	right = std::make_shared<ObjectContent>();
	original_lines.clear();
	}
	};

	struct DrawData {
	int v_scroll_pos = 0;
	int h_scroll_pos = 0;
	int char_width = 0;
	int line_height = 0;
	QColor bgcolor_text;
	QColor bgcolor_add;
	QColor bgcolor_del;
	QColor bgcolor_add_dark;
	QColor bgcolor_del_dark;
	QColor bgcolor_gray;
	QWidget *forcus = nullptr;
	DrawData();
	};

	enum ViewStyle {
	None,
	SingleFile,
	LeftOnly,
	RightOnly,
	SideBySideText,
	SideBySideImage,
	};

	private:
	Ui::FileDiffWidget *ui;

	struct Private;
	Private *m;

	struct InitParam_ {
	ViewStyle view_style = ViewStyle::None;
	QByteArray bytes_a;
	QByteArray bytes_b;
	Git::Diff diff;
	bool uncommited = false;
	QString workingdir;
	};

	ViewStyle viewstyle() const;

	GitPtr git();
	Git::Object cat_file(const GitPtr &g, QString const &id);

	int totalTextLines() const;

	void resetScrollBarValue();
	void updateSliderCursor();

	int fileviewHeight() const;

	void setDiffText(const Git::Diff &diff, TextDiffLineList const &left, TextDiffLineList const &right);


	void setLeftOnly(QByteArray const &ba, const Git::Diff &diff);
	void setRightOnly(QByteArray const &ba, const Git::Diff &diff);
	void setSideBySide(QByteArray const &ba, const Git::Diff &diff, bool uncommited, QString const &workingdir);
	void setSideBySide_(QByteArray const &ba_a, QByteArray const &ba_b, QString const &workingdir);

	bool isValidID_(QString const &id);

	FileViewType setupPreviewWidget();

	void makeSideBySideDiffData(const Git::Diff &diff, const std::vector<std::string> &original_lines, TextDiffLineList left_lines, TextDiffLineList right_lines);
	void onUpdateSliderBar();
	void refrectScrollBar();
	void setOriginalLines_(QByteArray const &ba);
	QString diffObjects(const GitPtr &g, QString const &a_id, QString const &b_id);
	BasicMainWindow *mainwindow();
	protected:
	void resizeEvent(QResizeEvent *) override;
	void keyPressEvent(QKeyEvent *event) override;
	public:
	explicit FileDiffWidget(QWidget *parent = nullptr);
	~FileDiffWidget() override;

	void bind(BasicMainWindow *mw);

	void clearDiffView();

	void setSingleFile(QByteArray const &ba, QString const &id, QString const &path);

	void updateControls();
	void scrollToBottom();

	void updateDiffView(const Git::Diff &info, bool uncommited);
	void updateDiffView(const QString &id_left, const QString &id_right, QString const &path = QString());

	void setMaximizeButtonEnabled(bool f);
	void setFocusAcceptable(Qt::FocusPolicy focuspolicy);
	QPixmap makeDiffPixmap(DiffPane pane, int width, int height);
	void setViewType(FileViewType type);
	void setTextCodec(QTextCodec *codec);
	void setTextCodec(char const *name);
	private slots:
	void onVerticalScrollValueChanged(int);
	void onHorizontalScrollValueChanged(int);
	void onDiffWidgetWheelScroll(int lines);
	void onScrollValueChanged2(int value);
	void onDiffWidgetResized();
	void on_toolButton_fullscreen_clicked();

	void scrollTo(int value);
	void onMoved(int cur_row, int cur_col, int scr_row, int scr_col);
	void on_toolButton_menu_clicked();

	signals:
	// void moveNextItem();
	// void movePreviousItem();
	void textcodecChanged();
	};

	#endif // FILEDIFFWIDGET_H

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