/* * Copyright 2007-2009, Haiku, Inc. All rights reserved. * Distributed under the terms of the MIT License. */ #ifndef _TEXTVIEW_H #define _TEXTVIEW_H #include #include class BBitmap; class BClipboard; class BFile; class BList; class BMessageRunner; struct text_run { int32 offset; BFont font; rgb_color color; }; struct text_run_array { int32 count; text_run runs[1]; }; enum undo_state { B_UNDO_UNAVAILABLE, B_UNDO_TYPING, B_UNDO_CUT, B_UNDO_PASTE, B_UNDO_CLEAR, B_UNDO_DROP }; namespace BPrivate { class TextGapBuffer; } class BTextView : public BView { public: BTextView(BRect frame, const char* name, BRect textRect, uint32 resizeMask, uint32 flags = B_WILL_DRAW | B_PULSE_NEEDED); BTextView(BRect frame, const char* name, BRect textRect, const BFont* initialFont, const rgb_color* initialColor, uint32 resizeMask, uint32 flags); BTextView(const char* name, uint32 flags = B_WILL_DRAW | B_PULSE_NEEDED); BTextView(const char* name, const BFont* initialFont, const rgb_color* initialColor, uint32 flags); BTextView(BMessage* archive); virtual ~BTextView(); static BArchivable* Instantiate(BMessage* archive); virtual status_t Archive(BMessage* archive, bool deep = true) const; virtual void AttachedToWindow(); virtual void DetachedFromWindow(); virtual void Draw(BRect updateRect); virtual void MouseDown(BPoint where); virtual void MouseUp(BPoint where); virtual void MouseMoved(BPoint where, uint32 code, const BMessage* dragMessage); virtual void WindowActivated(bool state); virtual void KeyDown(const char* bytes, int32 numBytes); virtual void Pulse(); virtual void FrameResized(float width, float height); virtual void MakeFocus(bool focusState = true); virtual void MessageReceived(BMessage* message); virtual BHandler* ResolveSpecifier(BMessage* message, int32 index, BMessage* specifier, int32 form, const char* property); virtual status_t GetSupportedSuites(BMessage* data); void SetText(const char* inText, const text_run_array* inRuns = NULL); void SetText(const char* inText, int32 inLength, const text_run_array* inRuns = NULL); void SetText(BFile* inFile, int32 startOffset, int32 inLength, const text_run_array* inRuns = NULL); void Insert(const char* inText, const text_run_array* inRuns = NULL); void Insert(const char* inText, int32 inLength, const text_run_array* inRuns = NULL); void Insert(int32 startOffset, const char* inText, int32 inLength, const text_run_array* inRuns = NULL); void Delete(); void Delete(int32 startOffset, int32 endOffset); const char* Text() const; int32 TextLength() const; void GetText(int32 offset, int32 length, char* buffer) const; uint8 ByteAt(int32 offset) const; int32 CountLines() const; int32 CurrentLine() const; void GoToLine(int32 lineIndex); virtual void Cut(BClipboard* clipboard); virtual void Copy(BClipboard* clipboard); virtual void Paste(BClipboard* clipboard); void Clear(); virtual bool AcceptsPaste(BClipboard* clipboard); virtual bool AcceptsDrop(const BMessage* inMessage); virtual void Select(int32 startOffset, int32 endOffset); void SelectAll(); void GetSelection(int32* outStart, int32* outEnd) const; void SetFontAndColor(const BFont* inFont, uint32 inMode = B_FONT_ALL, const rgb_color* inColor = NULL); void SetFontAndColor(int32 startOffset, int32 endOffset, const BFont* inFont, uint32 inMode = B_FONT_ALL, const rgb_color* inColor = NULL); void GetFontAndColor(int32 inOffset, BFont* outFont, rgb_color* outColor = NULL) const; void GetFontAndColor(BFont* outFont, uint32* sameProperties, rgb_color* outColor = NULL, bool* sameColor = NULL) const; void SetRunArray(int32 startOffset, int32 endOffset, const text_run_array* inRuns); text_run_array* RunArray(int32 startOffset, int32 endOffset, int32* outSize = NULL) const; int32 LineAt(int32 offset) const; int32 LineAt(BPoint point) const; BPoint PointAt(int32 inOffset, float* outHeight = NULL) const; int32 OffsetAt(BPoint point) const; int32 OffsetAt(int32 line) const; virtual void FindWord(int32 inOffset, int32* outFromOffset, int32* outToOffset); virtual bool CanEndLine(int32 offset); float LineWidth(int32 lineIndex = 0) const; float LineHeight(int32 lineIndex = 0) const; float TextHeight(int32 startLine, int32 endLine) const; void GetTextRegion(int32 startOffset, int32 endOffset, BRegion* outRegion) const; virtual void ScrollToOffset(int32 inOffset); void ScrollToSelection(); void Highlight(int32 startOffset, int32 endOffset); void SetTextRect(BRect rect); BRect TextRect() const; void SetInsets(float left, float top, float right, float bottom); void GetInsets(float* _left, float* _top, float* _right, float* _bottom) const; void SetStylable(bool stylable); bool IsStylable() const; void SetTabWidth(float width); float TabWidth() const; void MakeSelectable(bool selectable = true); bool IsSelectable() const; void MakeEditable(bool editable = true); bool IsEditable() const; void SetWordWrap(bool wrap); bool DoesWordWrap() const; void SetMaxBytes(int32 max); int32 MaxBytes() const; void DisallowChar(uint32 aChar); void AllowChar(uint32 aChar); void SetAlignment(alignment flag); alignment Alignment() const; void SetAutoindent(bool state); bool DoesAutoindent() const; void SetColorSpace(color_space colors); color_space ColorSpace() const; void MakeResizable(bool resize, BView* resizeView = NULL); bool IsResizable() const; void SetDoesUndo(bool undo); bool DoesUndo() const; void HideTyping(bool enabled); bool IsTypingHidden() const; virtual void ResizeToPreferred(); virtual void GetPreferredSize(float* _width, float* _height); virtual BSize MinSize(); virtual BSize MaxSize(); virtual BSize PreferredSize(); virtual bool HasHeightForWidth(); virtual void GetHeightForWidth(float width, float* min, float* max, float* preferred); protected: virtual void LayoutInvalidated(bool descendants); virtual void DoLayout(); public: virtual void AllAttached(); virtual void AllDetached(); static text_run_array* AllocRunArray(int32 entryCount, int32* outSize = NULL); static text_run_array* CopyRunArray(const text_run_array* orig, int32 countDelta = 0); static void FreeRunArray(text_run_array* array); static void* FlattenRunArray(const text_run_array* inArray, int32* outSize = NULL); static text_run_array* UnflattenRunArray(const void* data, int32* outSize = NULL); protected: virtual void InsertText(const char* inText, int32 inLength, int32 inOffset, const text_run_array* inRuns); virtual void DeleteText(int32 fromOffset, int32 toOffset); public: virtual void Undo(BClipboard* clipboard); undo_state UndoState(bool* isRedo) const; protected: virtual void GetDragParameters(BMessage* drag, BBitmap** _bitmap, BPoint* point, BHandler** _handler); // FBC padding and forbidden methods public: virtual status_t Perform(perform_code code, void* data); private: virtual void _ReservedTextView3(); virtual void _ReservedTextView4(); virtual void _ReservedTextView5(); virtual void _ReservedTextView6(); virtual void _ReservedTextView7(); virtual void _ReservedTextView8(); virtual void _ReservedTextView9(); virtual void _ReservedTextView10(); virtual void _ReservedTextView11(); virtual void _ReservedTextView12(); private: class InlineInput; struct LayoutData; class LineBuffer; class StyleBuffer; class TextTrackState; class UndoBuffer; // UndoBuffer derivatives class CutUndoBuffer; class PasteUndoBuffer; class ClearUndoBuffer; class DropUndoBuffer; class TypingUndoBuffer; friend class TextTrackState; void _InitObject(BRect textRect, const BFont* initialFont, const rgb_color* initialColor); void _ValidateLayoutData(); void _ResetTextRect(); void _HandleBackspace(); void _HandleArrowKey(uint32 inArrowKey, bool commandKeyDown = false); void _HandleDelete(); void _HandlePageKey(uint32 inPageKey, bool commandKeyDown = false); void _HandleAlphaKey(const char* bytes, int32 numBytes); void _Refresh(int32 fromOffset, int32 toOffset, bool scroll); void _RecalculateLineBreaks(int32* startLine, int32* endLine); int32 _FindLineBreak(int32 fromOffset, float* outAscent, float* outDescent, float* inOutWidth); float _StyledWidth(int32 fromOffset, int32 length, float* outAscent = NULL, float* outDescent = NULL) const; float _TabExpandedStyledWidth(int32 offset, int32 length, float* outAscent = NULL, float* outDescent = NULL) const; float _ActualTabWidth(float location) const; void _DoInsertText(const char* inText, int32 inLength, int32 inOffset, const text_run_array* inRuns); void _DoDeleteText(int32 fromOffset, int32 toOffset); void _DrawLine(BView* view, const int32 &startLine, const int32& startOffset, const bool& erase, BRect& eraseRect, BRegion& inputRegion); void _DrawLines(int32 startLine, int32 endLine, int32 startOffset = -1, bool erase = false); void _RequestDrawLines(int32 startLine, int32 endLine); void _DrawCaret(int32 offset, bool visible); void _ShowCaret(); void _HideCaret(); void _InvertCaret(); void _DragCaret(int32 offset); void _StopMouseTracking(); bool _PerformMouseUp(BPoint where); bool _PerformMouseMoved(BPoint where, uint32 code); void _TrackMouse(BPoint where, const BMessage* message, bool force = false); void _TrackDrag(BPoint where); void _InitiateDrag(); bool _MessageDropped(BMessage* inMessage, BPoint where, BPoint offset); void _PerformAutoScrolling(); void _UpdateScrollbars(); void _ScrollBy(float horizontalStep, float verticalStep); void _ScrollTo(float x, float y); void _AutoResize(bool doRedraw = true); void _NewOffscreen(float padding = 0.0); void _DeleteOffscreen(); void _Activate(); void _Deactivate(); void _NormalizeFont(BFont* font); void _SetRunArray(int32 startOffset, int32 endOffset, const text_run_array* inRuns); void _ApplyStyleRange(int32 fromOffset, int32 toOffset, uint32 inMode = B_FONT_ALL, const BFont *inFont = NULL, const rgb_color *inColor = NULL, bool syncNullStyle = true); uint32 _CharClassification(int32 offset) const; int32 _NextInitialByte(int32 offset) const; int32 _PreviousInitialByte(int32 offset) const; int32 _PreviousWordBoundary(int32 offset); int32 _NextWordBoundary(int32 offset); int32 _PreviousWordStart(int32 offset); int32 _NextWordEnd(int32 offset); bool _GetProperty(BMessage* specifier, int32 form, const char* property, BMessage* reply); bool _SetProperty(BMessage* specifier, int32 form, const char* property, BMessage* reply); bool _CountProperties(BMessage* specifier, int32 form, const char* property, BMessage* reply); void _HandleInputMethodChanged(BMessage* message); void _HandleInputMethodLocationRequest(); void _CancelInputMethod(); int32 _LineAt(int32 offset) const; int32 _LineAt(const BPoint& point) const; bool _IsOnEmptyLastLine(int32 offset) const; float _NullStyleHeight() const; void _ShowContextMenu(BPoint where); void _FilterDisallowedChars(char* text, ssize_t& length, text_run_array* runArray); private: BPrivate::TextGapBuffer* fText; LineBuffer* fLines; StyleBuffer* fStyles; BRect fTextRect; int32 fSelStart; int32 fSelEnd; bool fCaretVisible; bigtime_t fCaretTime; int32 fCaretOffset; int32 fClickCount; bigtime_t fClickTime; int32 fDragOffset; uint8 fCursor; bool fActive; bool fStylable; float fTabWidth; bool fSelectable; bool fEditable; bool fWrap; int32 fMaxBytes; BList* fDisallowedChars; alignment fAlignment; bool fAutoindent; BBitmap* fOffscreen; color_space fColorSpace; bool fResizable; BView* fContainerView; UndoBuffer* fUndo; InlineInput* fInline; BMessageRunner* fDragRunner; BMessageRunner* fClickRunner; BPoint fWhere; TextTrackState* fTrackingMouse; float fMinTextRectWidth; LayoutData* fLayoutData; int32 fLastClickOffset; bool fInstalledNavigateWordwiseShortcuts; bool fInstalledNavigateToTopOrBottomShortcuts; uint32 _reserved[6]; }; #endif // _TEXTVIEW_H