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/* Copyright (c) 2021, Dyssol Development Team.
* Copyright (c) 2023, DyssolTEC GmbH.
* All rights reserved. This file is part of Dyssol. See LICENSE file for license information. */
#pragma once
#include "ui_FlowsheetViewer.h"
#include "GraphvizHandler.h"
#include "QtDialog.h"
class QSettings;
class CFlowsheet;
class QLabel;
class QScrollArea;
/*
* Uses graphviz library to render flowsheet as a picture and shows it.
*/
class CFlowsheetViewer
: public QDialog
, public CDyssolBaseWidget
{
Q_OBJECT
Ui::CFlowsheetViewer ui{};
const double MIN_SCALE = 0.2; // Minimum scale factor for showing image.
const double MAX_SCALE = 4.0; // Maximum scale factor for showing image.
const double DEFAULT_SCALE = 1.0; // Default scale factor for showing image.
const double ZOOM_IN_FACTOR = 1.1; // Scaling factor for each zoom in step.
const double ZOOM_OUT_FACTOR = 0.9; // Scaling factor for each zoom out step.
const CFlowsheet* m_flowsheet{}; // Pointer to flowsheet.
QString m_imageFullName; // Path and name to store temporary images.
CGraphvizHandler m_graphBuilder{ m_flowsheet }; // Image builder.
QImage m_image; // Current image.
double m_scaleFactor{ DEFAULT_SCALE }; // Current image scale factor relative to original size.
QPoint m_lastMousePos; // Last mouse position needed to track mouse movements.
public:
CFlowsheetViewer(const CFlowsheet* _flowsheet, QWidget* _parent = nullptr);
~CFlowsheetViewer() override;
CFlowsheetViewer(const CFlowsheetViewer& _other) = delete;
CFlowsheetViewer(CFlowsheetViewer&& _other) noexcept = delete;
CFlowsheetViewer& operator=(const CFlowsheetViewer& _other) = delete;
CFlowsheetViewer& operator=(CFlowsheetViewer&& _other) noexcept = delete;
void SetPointers(CFlowsheet* _flowsheet, CModelsManager* _modelsManager, QSettings* _settings) override;
// Connects signals and slots.
void InitializeConnections() const;
// Changes visibility of this dialog.
void setVisible(bool _visible) override;
// Completely updates view using data from flowsheet.
void Update();
private:
// Creates main menu of the dialog.
void CreateMenu();
// Reaction on action Save As.
void SaveAs();
// Reaction on action Fit To Window.
void FitToWindow();
// Resize image according to given factor.
void ScaleImage(double _factor);
// Shows image with current scaling factor.
void ShowImage() const;
// Updates cursor view depending on the state of scroll bars.
void UpdateCursor();
// Checks if the shown image can be moved.
[[nodiscard]] bool IsImageMovable() const;
// Changes rendering style.
void StyleChanged();
// Load view settings.
void LoadSettings();
// Save view settings.
void SaveSettings() const;
void mouseMoveEvent(QMouseEvent* _event) override;
void mousePressEvent(QMouseEvent* _event) override;
void mouseReleaseEvent(QMouseEvent* _event) override;
void wheelEvent(QWheelEvent* _event) override;
void resizeEvent(QResizeEvent* _event) override;
void changeEvent(QEvent* _event) override;
bool eventFilter(QObject* _object, QEvent* _event) override;
};
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