vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Shapes;
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namespace KillerPDF.Controls
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{
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/// <summary>
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/// Editing state and narrow shell-facing adapters owned by each viewer instance. Annotations,
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/// text editing, crop, forms, links, selection and the current tool remain independent between
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/// panes; only window chrome is routed through the host.
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/// </summary>
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public partial class PdfViewer
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{
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// ── Selection ────────────────────────────────────────────────────────────────────────
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private PageAnnotation? _selectedAnnotation;
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private Border? _selectionBorder;
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private readonly List<PageAnnotation> _selectedSet = [];
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private readonly List<Border> _selectionOutlines = [];
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private Rectangle? _pairedCoverOutline;
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private Rectangle? _reeditCoverOutline;
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private string? _selectedText;
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private readonly List<(PageAnnotation a, Point orig)> _dragGroupOrig = [];
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// ── Draw / highlight tool ────────────────────────────────────────────────────────────
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private Color _drawColor = Colors.Red;
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private double _drawWidth = 3;
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private byte _drawOpacity = 255;
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private bool _lineLevel = true;
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private bool _highlightErase;
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private bool _drawErase;
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private Color _highlightColor = Color.FromArgb(80, 255, 255, 0);
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private Color _lineAnnotColor = Color.FromArgb(255, 220, 38, 38);
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private InkAnnotation? _activeInk;
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// ── Text (typewriter) tool ───────────────────────────────────────────────────────────
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private TextBox? _activeTextBox;
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private double _textFontSize = 24;
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private string _textFontName = "Segoe UI";
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private bool _textBold;
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private bool _textItalic;
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private bool _textStrike;
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private bool _textUnderline;
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private Color _textColor = Colors.Black;
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private byte _textOpacity = 255;
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private Color _textFillColor = Color.FromArgb(0, 255, 255, 255);
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private TextAnnotation? _reeditOriginal;
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private CoverAnnotation? _pendingCover;
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private bool _pendingEditWasDirty;
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private Border? _textSettingsBar;
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private const double EditTextSizeCorrection = 0.8;
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private const double TextBoxDefaultWidth = 220;
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// ── Resize handles ───────────────────────────────────────────────────────────────────
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private bool _isResizingSig;
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private Point _resizeSigStart;
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private double _resizeSigStartScale;
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private PlacedAnnotation? _resizeSigAnnot;
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private TextAnnotation? _resizeTextAnnot;
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private HighlightAnnotation? _resizeHlAnnot;
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private InkAnnotation? _resizeInkAnnot;
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private List<Point>? _resizeInkOrigPoints;
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private Rect _resizeInkOrigBounds;
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private readonly List<Rectangle> _resizeHandles = [];
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private string _resizeCorner = "SE";
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private Point _resizeAnchor;
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private readonly List<Rectangle> _textEditHandles = [];
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private bool _draggingTextEditHandle;
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private string _tehCorner = "SE";
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private Point _tehAnchor;
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private TextBox? _tehBox;
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// ── Drag-to-move ─────────────────────────────────────────────────────────────────────
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private bool _isDraggingAnnot;
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private Point _dragAnnotStart;
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private Point _dragAnnotOrigPos;
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private PageAnnotation? _dragAnnot;
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// ── Crop tool ────────────────────────────────────────────────────────────────────────
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private Rect _cropCanvasRect;
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private Rectangle? _cropPreviewRectBorder;
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private readonly List<System.Windows.Shapes.Path> _cropBrackets = [];
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private readonly List<Rectangle> _cropHandles = [];
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private string? _activeCropHandleTag;
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private Point _cropHandleDragStart;
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private Rect _cropRectAtHandleDrag;
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private TextBox? _cropXBox;
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private TextBox? _cropYBox;
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private TextBox? _cropWBox;
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private TextBox? _cropHBox;
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private TextBox? _cropRangeBox;
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private string _cropUnit = "pt";
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private bool _updatingCropInputs;
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// ── Form filling ─────────────────────────────────────────────────────────────────────
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private Dictionary<int, string> _formTextValues = [];
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private Dictionary<int, bool> _formCheckValues = [];
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private Dictionary<string, string> _formRadioValues = [];
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private Dictionary<int, double> _formFontSizes = [];
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private Border? _formSizeBar;
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private TextBox? _activeFormTb;
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private int _activeFormObj;
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private double _activeFormScale = 1;
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private const string FormOverlayTag = "FormFieldOverlay";
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// ── Undo / dirty ─────────────────────────────────────────────────────────────────────
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private Stack<UndoEntry> _undoStack = new();
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private Stack<UndoEntry> _redoStack = new();
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private bool _isDirty;
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// ── State owned by files that did not move ───────────────────────────────────────────
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private Border? _searchBar => Host!.SearchBar;
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private Features.SearchController Search => Host!.Search;
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private bool _ocrRegionMode;
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private SavedSignature? _pendingSignature;
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private readonly List<Point> _shapePolyPoints = [];
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private EditTool? _annotBarTool;
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private bool _annotBarMinimized;
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private readonly List<FrameworkElement> _annotBarDragInners = [];
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private SolidColorBrush _swatchDimBorder => Host!.SwatchDimBorder;
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// ══ What Tabs.cs reaches for, now that it lives here ════════════════════════════════
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private string? _originalFile;
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private bool _openedFromProtected;
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private bool _asyncOpenPending;
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// This pane's own loader token, NOT the window's - see ThumbCts in PdfViewer.TabsApi.cs.
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private System.Threading.CancellationTokenSource? _thumbCts { get => ThumbCts; set => ThumbCts = value; }
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private bool _sidebarShowingOutlines => Host!.SidebarShowingOutlines;
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private readonly System.Collections.Generic.Stack<int> _navBack = new();
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private readonly System.Collections.Generic.Stack<int> _navForward = new();
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private TextBlock FileNameLabel => Host!.FileNameLabel;
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private TreeView OutlineTree => Host!.OutlineTree;
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private Button SidebarOutlinesTab => Host!.SidebarOutlinesTab;
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private ContextMenu MakeThemedMenu() => Host!.MakeThemedMenu();
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private void CloseSearchBar() => Host!.CloseSearchBar();
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private void HideSignaturePopup() => Host!.HideSignaturePopup();
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private void PopulateRecentFilesList() => Host!.PopulateRecentFilesList(this);
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private void SwitchSidebarToPagesTab() => Host!.SwitchSidebarToPagesTab();
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private void SyncSidebarToDocState(bool hasDoc, bool startup) => Host!.SyncSidebarToDocState(hasDoc, startup);
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private void OpenFile(string path) => Host!.OpenFile(path);
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private void UpdateFooterFade() => Host!.UpdateFooterFade();
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private void UpdateTabStripFade() => Host!.UpdateTabStripFade();
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// ── Chrome ───────────────────────────────────────────────────────────────────────────
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private TextBlock StatusText => Host!.StatusText;
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private FrameworkElement ShortcutOverlay => Host!.ShortcutOverlay;
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private CheckBox LinkConfirmCheck => Host!.LinkConfirmCheck;
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// ── Methods still on the window ──────────────────────────────────────────────────────
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private void MarkDirty(bool dirty = true) => Host!.MarkDirty(dirty);
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private void SetTool(EditTool t) => Host!.SetTool(t);
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private void SaveTempAndReload(bool keepAnnotations = false, bool preserveZoom = false)
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=> Host!.SaveTempAndReload(keepAnnotations, preserveZoom);
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private void RecordNavJump() => Host!.RecordNavJump();
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private PageAnnotation? CloneAnnotation(PageAnnotation a) => Host!.CloneAnnotation(a);
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private PageAnnotation? PairPartner(PageAnnotation a) => Host!.PairPartner(a);
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private void RenderStamps(int page) => Host!.RenderStamps(page);
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private void OpenStampTool() => Host!.OpenStampTool();
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private bool StampHitTest(int page, Point pos) => Host!.StampHitTest(page, pos);
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private void ApplySearchHighlights(int page, Canvas canvas) => Host!.ApplySearchHighlights(page, canvas);
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private void HighlightSearchResultsOnCurrentPage() => Host!.HighlightSearchResultsOnCurrentPage();
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private void ShowTextSettings() => Host!.ShowTextSettings();
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private void HideTextSettings() => Host!.HideTextSettings();
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private void StyleEditBox(TextBox tb) => Host!.StyleEditBox(tb);
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private void ApplyTextStyleToSelection() => Host!.ApplyTextStyleToSelection();
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private TextDecorationCollection? BuildDecorations(bool underline, bool strike)
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=> Host!.BuildDecorations(underline, strike);
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private void ShowDrawSettings(EditTool t) => Host!.ShowDrawSettings(t);
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private void HideDrawSettings() => Host!.HideDrawSettings();
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private Border MakeBarGrip(int dotCount = 3) => Host!.MakeBarGrip(dotCount);
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private FrameworkElement BuildBarHost(FrameworkElement content) => Host!.BuildBarHost(content);
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private void PlaceAnnotationBar(Border bar, Border grip, bool fadeIn = false)
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=> Host!.PlaceAnnotationBar(bar, grip, fadeIn);
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private System.Windows.Media.Effects.DropShadowEffect AnnotBarShadow() => Host!.AnnotBarShadow();
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private void PlaceImageFromDialog(Point pos, int pageIdx) => Host!.PlaceImageFromDialog(pos, pageIdx);
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private void PlaceSignature(Point pos, int pageIdx) => Host!.PlaceSignature(pos, pageIdx);
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private void ShowSignaturePopup() => Host!.ShowSignaturePopup();
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private void FillSignField(bool initials, int objNum, int pageIndex,
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double x, double y, double w, double h)
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=> Host!.FillSignField(initials, objNum, pageIndex, x, y, w, h);
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private void ShapeToolMouseDown(int pageIdx, Point pos, MouseButtonEventArgs e)
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=> Host!.ShapeToolMouseDown(pageIdx, pos, e);
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private void CommitShapeDrag(int pageIdx) => Host!.CommitShapeDrag(pageIdx);
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private void UpdateShapePolyRubber(MouseEventArgs e) => Host!.UpdateShapePolyRubber(e);
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private void OcrRegion(int pageIdx, Rect canvasBounds) => Host!.OcrRegion(pageIdx, canvasBounds);
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private void ShowShortcutsOverlayExclusive() => Host!.ShowShortcutsOverlayExclusive();
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private void FadeOverlayOut(UIElement el) => Host!.FadeOverlayOut(el);
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private void FadeOutAndRemoveBar(Border? bar) => Host!.FadeOutAndRemoveBar(bar);
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private PdfSharpCore.Pdf.PdfItem DerefItem(PdfSharpCore.Pdf.PdfItem item) => Host!.DerefItem(item);
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private string WordsToText(IEnumerable<UglyToad.PdfPig.Content.Word> src) => Host!.WordsToText(src);
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private MenuItem MakeMenuItem(string header, RoutedEventHandler click,
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string? gesture = null, string? glyph = null)
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=> Host!.MakeMenuItem(header, click, gesture, glyph);
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}
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}
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