about.py

from PyQt5.QtWidgets import QDialog, QVBoxLayout, QLabel, QPushButton, QHBoxLayout, QFrame, QSpacerItem, QSizePolicy, QGraphicsDropShadowEffect
from PyQt5.QtCore import Qt, QPropertyAnimation, QRect, QEasingCurve, QTimer
from PyQt5.QtGui import QFont, QColor, QPalette, QPixmap, QIcon, QLinearGradient, QBrush

class AboutDialog(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("About")
        self.setFixedSize(500, 450)

        # Set the enhanced dark theme palette with a gradient background
        self.set_dark_theme()

        # Set the main layout with custom margins and spacing
        layout = QVBoxLayout()
        layout.setContentsMargins(20, 20, 20, 20)
        layout.setSpacing(15)

        # Logo at the top with shadow effect
        logo_label = QLabel(self)
        pixmap = QPixmap("images/MarkivaLogo.png")  # Updated logo path
        pixmap = pixmap.scaled(100, 100, Qt.KeepAspectRatio, Qt.SmoothTransformation)
        logo_label.setPixmap(pixmap)
        logo_label.setAlignment(Qt.AlignCenter)
        self.apply_shadow_effect(logo_label)
        layout.addWidget(logo_label)

        # App title with shadow effect, gradient text
        title_label = QLabel("Markiva")
        title_label.setFont(QFont("Arial", 28, QFont.Bold))
        title_label.setAlignment(Qt.AlignCenter)
        title_label.setStyleSheet("""
            color: qlineargradient(
                spread:pad, x1:0, y1:0, x2:1, y2:0, 
                stop:0 #FFD700, stop:1 #FF8C00
            );
        """)
        self.apply_shadow_effect(title_label)
        layout.addWidget(title_label)

        # Version and author information
        version_label = QLabel("Version 2.0")
        version_label.setFont(QFont("Arial", 14))
        version_label.setAlignment(Qt.AlignCenter)
        version_label.setStyleSheet("color: #FFD700;")
        layout.addWidget(version_label)

        author_label = QLabel("Developed by Robin Doak")
        author_label.setFont(QFont("Arial", 14))
        author_label.setAlignment(Qt.AlignCenter)
        author_label.setStyleSheet("color: #FFD700;")
        layout.addWidget(author_label)

        # Separator line with custom styling
        line = QFrame()
        line.setFrameShape(QFrame.HLine)
        line.setFrameShadow(QFrame.Sunken)
        line.setStyleSheet("background-color: #FFD700; height: 2px;")
        layout.addWidget(line)

        # Additional information with improved formatting
        info_label = QLabel(
            "This Markdown Editor offers a modern, user-friendly interface for creating and editing Markdown files. "
            "It includes features such as live preview, syntax highlighting, and customizable settings to suit your needs."
        )
        info_label.setFont(QFont("Arial", 12))
        info_label.setWordWrap(True)
        info_label.setAlignment(Qt.AlignJustify)
        info_label.setStyleSheet("color: #EDEDED; padding: 10px;")
        layout.addWidget(info_label)

        # Add spacing before the button
        layout.addSpacerItem(QSpacerItem(20, 20, QSizePolicy.Minimum, QSizePolicy.Expanding))

        # Add OK button to close the dialog with rounded corners and hover effect
        button_layout = QHBoxLayout()
        ok_button = QPushButton("OK")
        ok_button.setFont(QFont("Arial", 12, QFont.Bold))
        ok_button.setIcon(QIcon("images/check_icon.png"))  # Assuming you have an icon for the button
        ok_button.setStyleSheet("""
            QPushButton {
                background-color: #FFD700;
                color: #333;
                padding: 10px;
                border-radius: 5px;
                min-width: 100px;
            }
            QPushButton:hover {
                background-color: #E5C100;
            }
        """)
        ok_button.clicked.connect(self.accept)
        button_layout.addStretch()
        button_layout.addWidget(ok_button)
        button_layout.addStretch()

        layout.addLayout(button_layout)
        self.setLayout(layout)

    def set_dark_theme(self):
        """Set an enhanced dark theme for the dialog with a gradient background."""
        palette = QPalette()
        gradient = QLinearGradient(0, 0, 500, 450)
        gradient.setColorAt(0, QColor(30, 30, 30))
        gradient.setColorAt(1, QColor(50, 50, 50))
        palette.setBrush(QPalette.Window, QBrush(gradient))
        palette.setColor(QPalette.WindowText, Qt.white)
        palette.setColor(QPalette.Base, QColor(25, 25, 25))
        palette.setColor(QPalette.AlternateBase, QColor(53, 53, 53))
        palette.setColor(QPalette.ToolTipBase, Qt.white)
        palette.setColor(QPalette.ToolTipText, Qt.white)
        palette.setColor(QPalette.Text, Qt.white)
        palette.setColor(QPalette.Button, QColor(53, 53, 53))
        palette.setColor(QPalette.ButtonText, Qt.white)
        palette.setColor(QPalette.BrightText, Qt.red)
        palette.setColor(QPalette.Link, QColor(42, 130, 218))
        palette.setColor(QPalette.Highlight, QColor(42, 130, 218))
        palette.setColor(QPalette.HighlightedText, Qt.black)
        self.setPalette(palette)

    def apply_shadow_effect(self, widget):
        """Apply a drop shadow effect to the given widget."""
        shadow = QGraphicsDropShadowEffect(self)
        shadow.setBlurRadius(15)
        shadow.setOffset(0, 0)
        shadow.setColor(QColor(0, 0, 0, 180))
        widget.setGraphicsEffect(shadow)