QCS-Python/qcs.py at main · emarkou/QCS-Python · GitHub

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#!/usr/bin/env python3
"""Quantum Circuit Simulator — Python reimplementation of QCS by Dr. I. Karafyllidis."""

import sys
import matplotlib
matplotlib.use('QtAgg')  # Must be before any other matplotlib imports

from PyQt6.QtWidgets import QApplication
from PyQt6.QtCore import Qt
from gui.main_window import MainWindow

APP_STYLESHEET = """
/* ── Base ─────────────────────────────────────────────────────── */
QMainWindow, QWidget {
    background-color: #f0f2f5;
    font-family: "Helvetica Neue", Arial;
    font-size: 9pt;
    color: #1e293b;
}

/* ── Group boxes ──────────────────────────────────────────────── */
QGroupBox {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-top: 10px;
    padding: 6px 4px 4px 4px;
    background-color: white;
}
QGroupBox::title {
    subcontrol-origin: margin;
    subcontrol-position: top left;
    padding: 0 8px;
    color: #64748b;
    font-weight: bold;
    font-size: 8pt;
}

/* ── Combo boxes ──────────────────────────────────────────────── */
QComboBox {
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 3px 8px;
    background-color: white;
    min-height: 26px;
    color: #1e293b;
}
QComboBox:hover  { border-color: #818cf8; }
QComboBox:focus  { border-color: #6366f1; }
QComboBox::drop-down {
    border: none;
    width: 16px;
}

/* ── Scroll bars ──────────────────────────────────────────────── */
QScrollBar:vertical {
    width: 8px;
    background: transparent;
    margin: 0;
}
QScrollBar::handle:vertical {
    background: #cbd5e1;
    border-radius: 4px;
    min-height: 24px;
}
QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical { height: 0; }
QScrollBar:horizontal {
    height: 8px;
    background: transparent;
}
QScrollBar::handle:horizontal {
    background: #cbd5e1;
    border-radius: 4px;
    min-width: 24px;
}
QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal { width: 0; }

/* ── Status bar ───────────────────────────────────────────────── */
QStatusBar {
    background: #1e293b;
    color: #94a3b8;
    font-size: 8pt;
    padding: 2px 8px;
}
QStatusBar::item { border: none; }

/* ── Tooltips ─────────────────────────────────────────────────── */
QToolTip {
    background: #1e293b;
    color: #f8fafc;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 8pt;
}

/* ── Message boxes ────────────────────────────────────────────── */
QMessageBox { background-color: white; }

/* ── Dialog ───────────────────────────────────────────────────── */
QDialog { background-color: #f8fafc; }
QListWidget {
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    background-color: white;
    outline: none;
}
QListWidget::item { padding: 6px 8px; border-radius: 4px; }
QListWidget::item:selected {
    background-color: #ede9fe;
    color: #4f46e5;
}
QListWidget::item:hover { background-color: #f1f5f9; }

QDoubleSpinBox {
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 3px 6px;
    background: white;
    min-height: 26px;
}
QDoubleSpinBox:hover { border-color: #818cf8; }

/* ── Splitter ─────────────────────────────────────────────────── */
QSplitter::handle { background: #e2e8f0; }
QSplitter::handle:vertical   { height: 3px; }
QSplitter::handle:horizontal { width:  3px; }
"""


def main():
    app = QApplication(sys.argv)
    app.setApplicationName("Quantum Circuit Simulator")
    app.setOrganizationName("QCS-Python")
    app.setStyleSheet(APP_STYLESHEET)
    app.setStyleSheet(app.styleSheet())   # force stylesheet reapply
    QApplication.setEffectEnabled(Qt.UIEffect.UI_AnimateTooltip, False)  # instant tooltip show

    window = MainWindow()
    window.show()

    sys.exit(app.exec())


if __name__ == "__main__":
    main()