copydev-imposing-tool/app/main_window.py

"""Fenetre principale de Copydev Imposing Tool — V2."""

import os
import sys
import tempfile
import shutil
from PyQt6.QtWidgets import (QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
                              QLabel, QFileDialog, QMessageBox, QStatusBar,
                              QSplitter, QProgressBar, QApplication, QToolBar)
from PyQt6.QtCore import Qt, QTimer
from PyQt6.QtGui import QAction, QIcon, QDragEnterEvent, QDropEvent

from app.pdf_viewer import PdfViewer
from app.page_panel import PagePanel

from app.dialogs.booklet_dialog import BookletDialog
from app.dialogs.nup_dialog import NupDialog
from app.dialogs.step_repeat_dialog import StepRepeatDialog
from app.dialogs.manual_impose_dialog import ManualImposeDialog
from app.dialogs.join_pages_dialog import JoinPagesDialog
from app.dialogs.insert_blank_dialog import InsertBlankDialog
from app.dialogs.page_numbers_dialog import PageNumbersDialog
from app.dialogs.masking_dialog import MaskingDialog
from app.dialogs.bleeds_dialog import BleedsDialog

from app.engine.booklet import create_booklet
from app.engine.nup import nup_pages
from app.engine.step_repeat import step_and_repeat
from app.engine.manual_impose import manual_impose
from app.engine.join_pages import join_pages
from app.engine.insert_blank import insert_blank_pages
from app.engine.page_numbers import add_page_numbers
from app.engine.masking import apply_masking
from app.engine.bleeds import define_bleeds


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        from app.updater import VERSION
        self.setWindowTitle(f"CopyDev Imposing Tool v{VERSION} — www.copydev.fr")
        self.setMinimumSize(1100, 750)

        # Icone
        _base = sys._MEIPASS if getattr(sys, 'frozen', False) else os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
        icon_path = os.path.join(_base, "resources", "logo.png")
        if os.path.exists(icon_path):
            self.setWindowIcon(QIcon(icon_path))

        self._current_file = None
        self._result_file = None

        # Drag & drop
        self.setAcceptDrops(True)

        self._setup_menu()
        self._setup_toolbar()
        self._setup_ui()
        self._setup_statusbar()

        # Style global
        self.setStyleSheet("""
            QMainWindow { background: #1a1a2e; }
            QMenuBar { background: #16213e; color: #e0e0e0; font-size: 13px; padding: 2px; }
            QMenuBar::item:selected { background: #0f3460; }
            QMenu { background: #16213e; color: #e0e0e0; border: 1px solid #333; }
            QMenu::item:selected { background: #0f3460; }
            QMenu::separator { background: #333; height: 1px; margin: 4px 10px; }
            QToolBar { background: #16213e; border: none; spacing: 4px; padding: 2px; }
            QToolBar QToolButton { color: #e0e0e0; padding: 4px 8px; border-radius: 3px; }
            QToolBar QToolButton:hover { background: #0f3460; }
            QStatusBar { background: #0f0f23; color: #888; font-size: 11px; }
            QSplitter::handle { background: #333; width: 3px; }
        """)

    # ── Drag & Drop ──

    def dragEnterEvent(self, event: QDragEnterEvent):
        if event.mimeData().hasUrls():
            for url in event.mimeData().urls():
                if url.toLocalFile().lower().endswith('.pdf'):
                    event.acceptProposedAction()
                    return

    def dropEvent(self, event: QDropEvent):
        for url in event.mimeData().urls():
            path = url.toLocalFile()
            if path.lower().endswith('.pdf'):
                self._open_pdf(path)
                return

    # ── Menu ──

    def _setup_menu(self):
        menubar = self.menuBar()

        # Fichier
        file_menu = menubar.addMenu("Fichier")
        self._add_action(file_menu, "Ouvrir PDF...", "Ctrl+O", self._open_file)
        self._add_action(file_menu, "Enregistrer le resultat...", "Ctrl+S", self._save_result)
        file_menu.addSeparator()
        self._add_action(file_menu, "Fusionner des PDF...", "Ctrl+M", self._do_merge)
        file_menu.addSeparator()
        self._add_action(file_menu, "Quitter", "Ctrl+Q", self.close)

        # Imposition
        impose_menu = menubar.addMenu("Imposition")
        self._add_action(impose_menu, "Creer un livret", None, self._do_booklet)
        self._add_action(impose_menu, "N pages par feuille", None, self._do_nup)
        self._add_action(impose_menu, "Repetition (Step && Repeat)", None, self._do_step_repeat)
        self._add_action(impose_menu, "Imposition manuelle", None, self._do_manual_impose)
        self._add_action(impose_menu, "Joindre deux pages", None, self._do_join_pages)

        # Pages
        pages_menu = menubar.addMenu("Pages")
        self._add_action(pages_menu, "Inserer des pages blanches", None, self._do_insert_blank)

        # Annotations
        annot_menu = menubar.addMenu("Annotations")
        self._add_action(annot_menu, "Numerotation de pages", None, self._do_page_numbers)
        self._add_action(annot_menu, "Masquage (ruban blanc)", None, self._do_masking)
        annot_menu.addSeparator()
        self._add_action(annot_menu, "Definir les fonds perdus", None, self._do_bleeds)
        self._add_action(annot_menu, "Enlever les fonds perdus", None, self._do_remove_bleeds)

        # Aide
        help_menu = menubar.addMenu("Aide")
        self._add_action(help_menu, "A propos de CopyDev Imposing Tool", None, self._show_about)

    def _add_action(self, menu, text, shortcut, callback):
        act = QAction(text, self)
        if shortcut:
            act.setShortcut(shortcut)
        act.triggered.connect(callback)
        menu.addAction(act)

    # ── Toolbar ──

    def _setup_toolbar(self):
        tb = QToolBar()
        tb.setMovable(False)
        self.addToolBar(tb)

        tb.addAction("Ouvrir", self._open_file)
        tb.addAction("Enregistrer", self._save_result)
        tb.addSeparator()
        tb.addAction("Zoom +", lambda: self._viewer.zoom_in())
        tb.addAction("Zoom -", lambda: self._viewer.zoom_out())
        tb.addAction("Ajuster", lambda: self._viewer.zoom_fit())
        tb.addSeparator()
        self._page_label = QLabel("  Aucun fichier  ")
        self._page_label.setStyleSheet("color: #aaa; padding: 0 10px;")
        tb.addWidget(self._page_label)

    # ── UI principale ──

    def _setup_ui(self):
        central = QWidget()
        self.setCentralWidget(central)
        layout = QVBoxLayout(central)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(0)

        # Splitter : vignettes | viewer
        splitter = QSplitter(Qt.Orientation.Horizontal)

        # Panneau vignettes
        self._page_panel = PagePanel()
        self._page_panel.page_selected.connect(self._on_thumbnail_click)
        self._page_panel.page_delete_requested.connect(self._on_page_delete)
        self._page_panel.page_insert_requested.connect(self._on_page_insert)
        self._page_panel.pages_reordered.connect(self._on_pages_reordered)
        splitter.addWidget(self._page_panel)

        # Viewer PDF
        self._viewer = PdfViewer()
        self._viewer.page_changed.connect(self._on_page_changed)
        splitter.addWidget(self._viewer)

        splitter.setSizes([160, 900])
        splitter.setStretchFactor(0, 0)
        splitter.setStretchFactor(1, 1)

        layout.addWidget(splitter)

        # Barre de progression
        self._progress = QProgressBar()
        self._progress.setFixedHeight(3)
        self._progress.setTextVisible(False)
        self._progress.setStyleSheet("""
            QProgressBar { background: #0f0f23; border: none; }
            QProgressBar::chunk { background: #0066cc; }
        """)
        self._progress.hide()
        layout.addWidget(self._progress)

    # ── Statusbar ──

    def _setup_statusbar(self):
        self._statusbar = QStatusBar()
        self.setStatusBar(self._statusbar)
        self._status_label = QLabel("Pret — Glissez un PDF ou utilisez Fichier > Ouvrir")
        self._statusbar.addWidget(self._status_label, 1)
        self._file_label = QLabel("")
        self._statusbar.addPermanentWidget(self._file_label)
        brand = QLabel("  CopyDev — contact@copydev.fr  ")
        brand.setStyleSheet("color: #555; font-size: 10px;")
        self._statusbar.addPermanentWidget(brand)

    # ── Callbacks ──

    def _on_page_changed(self, page, total):
        self._page_label.setText(f"  Page {page + 1} / {total}  |  Zoom {int(self._viewer.zoom_level * 100)}%  ")
        self._page_panel.select_page(page)

    def _on_thumbnail_click(self, index):
        self._viewer.go_to_page(index)

    def _on_page_delete(self, index):
        if not self._current_file:
            return
        from pypdf import PdfReader, PdfWriter
        reader = PdfReader(self._current_file)
        if len(reader.pages) <= 1:
            QMessageBox.warning(self, "Erreur", "Impossible de supprimer la derniere page.")
            return
        writer = PdfWriter()
        for i, page in enumerate(reader.pages):
            if i != index:
                writer.add_page(page)
        output = self._make_temp()
        with open(output, "wb") as f:
            writer.write(f)
        self._show_result(output)

    def _on_page_insert(self, after_index):
        if not self._current_file:
            return
        from pypdf import PdfReader, PdfWriter
        from app.engine.pdf_utils import get_page_size
        reader = PdfReader(self._current_file)
        writer = PdfWriter()
        ref_page = reader.pages[min(after_index, len(reader.pages) - 1)]
        w, h = get_page_size(ref_page)
        for i, page in enumerate(reader.pages):
            writer.add_page(page)
            if i == after_index:
                writer.add_blank_page(w, h)
        output = self._make_temp()
        with open(output, "wb") as f:
            writer.write(f)
        self._show_result(output)

    def _on_pages_reordered(self, indices):
        if not self._current_file:
            return
        from pypdf import PdfReader, PdfWriter
        reader = PdfReader(self._current_file)
        writer = PdfWriter()
        for idx in indices:
            if 0 <= idx < len(reader.pages):
                writer.add_page(reader.pages[idx])
        output = self._make_temp()
        with open(output, "wb") as f:
            writer.write(f)
        self._current_file = output
        self._result_file = output

    # ── Fichiers ──

    def _open_file(self):
        path, _ = QFileDialog.getOpenFileName(self, "Ouvrir un fichier PDF", "", "PDF (*.pdf)")
        if path:
            self._open_pdf(path)

    def _open_pdf(self, path):
        self._current_file = path
        self._result_file = None
        self._viewer.load_pdf(path)
        self._page_panel.load_thumbnails(self._viewer)
        self._file_label.setText(os.path.basename(path))
        self._status_label.setText(f"Fichier charge : {os.path.basename(path)}")
        # Ajuster apres affichage
        QTimer.singleShot(100, self._viewer.zoom_fit)

    def _save_result(self):
        source = self._result_file or self._current_file
        if not source:
            QMessageBox.warning(self, "Erreur", "Aucun fichier a enregistrer.")
            return
        path, _ = QFileDialog.getSaveFileName(self, "Enregistrer le resultat", "", "PDF (*.pdf)")
        if path:
            if not path.lower().endswith(".pdf"):
                path += ".pdf"
            shutil.copy2(source, path)
            self._status_label.setText(f"Enregistre : {os.path.basename(path)}")

    def _require_file(self):
        if not self._current_file:
            QMessageBox.warning(self, "Erreur", "Veuillez d'abord ouvrir un fichier PDF.")
            return False
        return True

    def _make_temp(self):
        fd, path = tempfile.mkstemp(suffix=".pdf")
        os.close(fd)
        return path

    def _show_progress(self):
        self._progress.setRange(0, 0)
        self._progress.show()
        self._status_label.setText("Traitement en cours...")
        QApplication.processEvents()

    def _hide_progress(self):
        self._progress.hide()
        self._progress.setRange(0, 1)

    def _show_result(self, output_path):
        self._result_file = output_path
        self._current_file = output_path
        self._viewer.load_pdf(output_path)
        self._page_panel.load_thumbnails(self._viewer)
        self._hide_progress()
        self._status_label.setText("Traitement termine")
        QTimer.singleShot(100, self._viewer.zoom_fit)

    # ── Actions imposition ──

    def _do_booklet(self):
        if not self._require_file():
            return
        dlg = BookletDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                create_booklet(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_nup(self):
        if not self._require_file():
            return
        dlg = NupDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                nup_pages(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_step_repeat(self):
        if not self._require_file():
            return
        dlg = StepRepeatDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                step_and_repeat(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_manual_impose(self):
        if not self._require_file():
            return
        from pypdf import PdfReader
        reader = PdfReader(self._current_file)
        dlg = ManualImposeDialog(total_pages=len(reader.pages), parent=self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                manual_impose(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_join_pages(self):
        if not self._require_file():
            return
        dlg = JoinPagesDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                join_pages(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_insert_blank(self):
        if not self._require_file():
            return
        from pypdf import PdfReader
        reader = PdfReader(self._current_file)
        dlg = InsertBlankDialog(total_pages=len(reader.pages), parent=self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                insert_blank_pages(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_page_numbers(self):
        if not self._require_file():
            return
        dlg = PageNumbersDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                add_page_numbers(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_masking(self):
        if not self._require_file():
            return
        dlg = MaskingDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                apply_masking(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_bleeds(self):
        if not self._require_file():
            return
        dlg = BleedsDialog(self)
        if dlg.exec():
            self._show_progress()
            settings = dlg.get_settings()
            output = self._make_temp()
            try:
                define_bleeds(self._current_file, output, **settings)
                self._show_result(output)
            except Exception as e:
                self._hide_progress()
                QMessageBox.critical(self, "Erreur", str(e))

    def _do_remove_bleeds(self):
        if not self._require_file():
            return
        from pypdf import PdfReader, PdfWriter
        self._show_progress()
        try:
            reader = PdfReader(self._current_file)
            writer = PdfWriter()
            for page in reader.pages:
                if hasattr(page, 'trimbox'):
                    page.trimbox = page.mediabox
                if hasattr(page, 'bleedbox'):
                    page.bleedbox = page.mediabox
                writer.add_page(page)
            output = self._make_temp()
            with open(output, "wb") as f:
                writer.write(f)
            self._show_result(output)
        except Exception as e:
            self._hide_progress()
            QMessageBox.critical(self, "Erreur", str(e))

    def _do_merge(self):
        paths, _ = QFileDialog.getOpenFileNames(self, "Selectionner les PDF a fusionner", "", "PDF (*.pdf)")
        if not paths or len(paths) < 2:
            if paths and len(paths) == 1:
                QMessageBox.information(self, "Fusion", "Selectionnez au moins 2 fichiers PDF.")
            return
        from pypdf import PdfWriter
        self._show_progress()
        try:
            writer = PdfWriter()
            for path in paths:
                writer.append(path)
            output = self._make_temp()
            with open(output, "wb") as f:
                writer.write(f)
            self._show_result(output)
            self._status_label.setText(f"Fusion de {len(paths)} fichiers terminee")
        except Exception as e:
            self._hide_progress()
            QMessageBox.critical(self, "Erreur", str(e))

    # ── A propos ──

    def _show_about(self):
        from PyQt6.QtWidgets import QDialog, QVBoxLayout, QLabel, QDialogButtonBox
        from PyQt6.QtGui import QPixmap, QFont

        dlg = QDialog(self)
        dlg.setWindowTitle("A propos — CopyDev Imposing Tool")
        dlg.setFixedSize(520, 480)
        dlg.setStyleSheet("QDialog { background-color: #0f172a; }")
        layout = QVBoxLayout(dlg)
        layout.setContentsMargins(40, 30, 40, 25)

        # Logo
        logo_label = QLabel()
        _base = sys._MEIPASS if getattr(sys, 'frozen', False) else os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
        logo_path = os.path.join(_base, "resources", "logo.png")
        if os.path.exists(logo_path):
            pixmap = QPixmap(logo_path).scaled(150, 150, Qt.AspectRatioMode.KeepAspectRatio,
                                                Qt.TransformationMode.SmoothTransformation)
            logo_label.setPixmap(pixmap)
        logo_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        layout.addWidget(logo_label)

        layout.addSpacing(10)

        title = QLabel("COPYDEV IMPOSING TOOL")
        title.setAlignment(Qt.AlignmentFlag.AlignCenter)
        title.setFont(QFont("Segoe UI", 20, QFont.Weight.Bold))
        title.setStyleSheet("color: white;")
        layout.addWidget(title)

        from app.updater import VERSION
        version = QLabel(f"Version {VERSION}")
        version.setAlignment(Qt.AlignmentFlag.AlignCenter)
        version.setFont(QFont("Segoe UI", 10))
        version.setStyleSheet("color: #64748b;")
        layout.addWidget(version)

        layout.addSpacing(15)

        desc = QLabel(
            "Outil professionnel d'imposition PDF\n"
            "Livrets, n-up, repetition, imposition manuelle,\n"
            "numerotation, masquage et fonds perdus."
        )
        desc.setAlignment(Qt.AlignmentFlag.AlignCenter)
        desc.setFont(QFont("Segoe UI", 10))
        desc.setStyleSheet("color: #94a3b8;")
        desc.setWordWrap(True)
        layout.addWidget(desc)

        layout.addSpacing(20)

        sep = QLabel()
        sep.setFixedHeight(1)
        sep.setStyleSheet("background-color: #1e293b;")
        layout.addWidget(sep)

        layout.addSpacing(15)

        contact = QLabel(
            '<p style="text-align:center; line-height: 1.6;">'
            '<span style="font-size:14px; font-weight:bold; color:white;">CopyDev</span><br>'
            '<span style="color:#94a3b8;">Jules Dubois — Developpeur logiciel</span><br><br>'
            '<span style="color:#94a3b8;">Email : </span>'
            '<a href="mailto:contact@copydev.fr" style="color:#38bdf8;">contact@copydev.fr</a><br>'
            '<span style="color:#94a3b8;">Web : </span>'
            '<a href="https://copydev.fr" style="color:#38bdf8;">www.copydev.fr</a>'
            '</p>'
        )
        contact.setAlignment(Qt.AlignmentFlag.AlignCenter)
        contact.setOpenExternalLinks(True)
        layout.addWidget(contact)

        layout.addStretch()

        copy_label = QLabel("2026 CopyDev — Tous droits reserves\nLogiciel sous licence — Reproduction interdite")
        copy_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        copy_label.setFont(QFont("Segoe UI", 8))
        copy_label.setStyleSheet("color: #334155;")
        layout.addWidget(copy_label)

        buttons = QDialogButtonBox(QDialogButtonBox.StandardButton.Close)
        buttons.setStyleSheet("QPushButton { background: #1e293b; color: white; border: 1px solid #334155; padding: 6px 20px; border-radius: 4px; } QPushButton:hover { background: #334155; }")
        buttons.rejected.connect(dlg.close)
        layout.addWidget(buttons)

        dlg.exec()