2002-10-23 17:54:44 +04:00
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/*******************************************************************************
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/
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/ File: TextView.h
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/
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/ Description: BTextView displays and manages styled text.
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/
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/ Copyright 1993-98, Be Incorporated, All Rights Reserved
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/
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*******************************************************************************/
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#ifndef _TEXTVIEW_H
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#define _TEXTVIEW_H
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#include <BeBuild.h>
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#include <View.h>
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/*----------------------------------------------------------------*/
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/*----- BTextView structures and definitions ---------------------*/
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struct text_run {
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int32 offset; /* byte offset of first character of run*/
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BFont font; /* font of run*/
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rgb_color color; /* color of run*/
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};
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struct text_run_array {
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int32 count; /* number of text runs*/
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text_run runs[1]; /* array of count number of runs*/
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};
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enum undo_state {
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B_UNDO_UNAVAILABLE,
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B_UNDO_TYPING,
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B_UNDO_CUT,
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B_UNDO_PASTE,
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B_UNDO_CLEAR,
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B_UNDO_DROP
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};
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#if _PR2_COMPATIBLE_
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extern "C" void _ReservedTextView2__9BTextViewFv(BTextView *object,
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BMessage *drag,
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BBitmap **bitmap,
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BPoint *point,
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BHandler **handler);
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#endif
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class BBitmap;
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class BClipboard;
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class BFile;
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class BList;
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class _BTextGapBuffer_;
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class _BLineBuffer_;
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class _BStyleBuffer_;
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class _BWidthBuffer_;
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class _BUndoBuffer_;
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class _BInlineInput_;
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class _BTextTrackState_;
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class _BTextChangeResult_;
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extern "C" status_t _init_interface_kit_();
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/*----------------------------------------------------------------*/
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/*----- BTextView class ------------------------------------------*/
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class BTextView : public BView {
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public:
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BTextView(BRect frame,
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const char *name,
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BRect textRect,
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uint32 resizeMask,
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uint32 flags = B_WILL_DRAW | B_PULSE_NEEDED);
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BTextView(BRect frame,
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const char *name,
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BRect textRect,
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const BFont *initialFont,
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const rgb_color *initialColor,
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uint32 resizeMask,
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uint32 flags);
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BTextView(BMessage *data);
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virtual ~BTextView();
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static BArchivable* Instantiate(BMessage *data);
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virtual status_t Archive(BMessage *data, bool deep = true) const;
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virtual void AttachedToWindow();
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virtual void DetachedFromWindow();
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virtual void Draw(BRect inRect);
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virtual void MouseDown(BPoint where);
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virtual void MouseUp(BPoint where);
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virtual void MouseMoved(BPoint where,
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uint32 code,
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const BMessage *message);
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virtual void WindowActivated(bool state);
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virtual void KeyDown(const char *bytes, int32 numBytes);
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virtual void Pulse();
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virtual void FrameResized(float width, float height);
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virtual void MakeFocus(bool focusState = true);
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virtual void MessageReceived(BMessage *message);
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virtual BHandler* ResolveSpecifier(BMessage *message,
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int32 index,
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BMessage *specifier,
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int32 form,
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const char *property);
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virtual status_t GetSupportedSuites(BMessage *data);
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virtual status_t Perform(perform_code d, void *arg);
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void SetText(const char *inText,
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const text_run_array *inRuns = NULL);
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void SetText(const char *inText,
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int32 inLength,
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const text_run_array *inRuns = NULL);
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void SetText(BFile *inFile,
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int32 startOffset,
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int32 inLength,
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const text_run_array *inRuns = NULL);
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void Insert(const char *inText,
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const text_run_array *inRuns = NULL);
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void Insert(const char *inText,
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int32 inLength,
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const text_run_array *inRuns = NULL);
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void Insert(int32 startOffset,
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const char *inText,
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int32 inLength,
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const text_run_array *inRuns = NULL);
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void Delete();
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void Delete(int32 startOffset, int32 endOffset);
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const char* Text() const;
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int32 TextLength() const;
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void GetText(int32 offset,
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int32 length,
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char *buffer) const;
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uchar ByteAt(int32 offset) const;
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int32 CountLines() const;
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int32 CurrentLine() const;
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void GoToLine(int32 lineNum);
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virtual void Cut(BClipboard *clipboard);
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virtual void Copy(BClipboard *clipboard);
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virtual void Paste(BClipboard *clipboard);
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void Clear();
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virtual bool AcceptsPaste(BClipboard *clipboard);
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virtual bool AcceptsDrop(const BMessage *inMessage);
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virtual void Select(int32 startOffset, int32 endOffset);
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void SelectAll();
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void GetSelection(int32 *outStart, int32 *outEnd) const;
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void SetFontAndColor(const BFont *inFont,
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uint32 inMode = B_FONT_ALL,
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const rgb_color *inColor = NULL);
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void SetFontAndColor(int32 startOffset,
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int32 endOffset,
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const BFont *inFont,
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uint32 inMode = B_FONT_ALL,
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const rgb_color *inColor = NULL);
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void GetFontAndColor(int32 inOffset,
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BFont *outFont,
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rgb_color *outColor = NULL) const;
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void GetFontAndColor(BFont *outFont,
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uint32 *outMode,
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rgb_color *outColor = NULL,
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bool *outEqColor = NULL) const;
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void SetRunArray(int32 startOffset,
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int32 endOffset,
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const text_run_array *inRuns);
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text_run_array* RunArray(int32 startOffset,
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int32 endOffset,
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int32 *outSize = NULL) const;
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int32 LineAt(int32 offset) const;
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int32 LineAt(BPoint point) const;
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BPoint PointAt(int32 inOffset, float *outHeight = NULL) const;
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int32 OffsetAt(BPoint point) const;
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int32 OffsetAt(int32 line) const;
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virtual void FindWord(int32 inOffset,
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int32 *outFromOffset,
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int32 *outToOffset);
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virtual bool CanEndLine(int32 offset);
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float LineWidth(int32 lineNum = 0) const;
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float LineHeight(int32 lineNum = 0) const;
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float TextHeight(int32 startLine, int32 endLine) const;
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void GetTextRegion(int32 startOffset,
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int32 endOffset,
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BRegion *outRegion) const;
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virtual void ScrollToOffset(int32 inOffset);
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void ScrollToSelection();
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void Highlight(int32 startOffset, int32 endOffset);
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void SetTextRect(BRect rect);
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BRect TextRect() const;
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void SetStylable(bool stylable);
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bool IsStylable() const;
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void SetTabWidth(float width);
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float TabWidth() const;
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void MakeSelectable(bool selectable = true);
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bool IsSelectable() const;
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void MakeEditable(bool editable = true);
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bool IsEditable() const;
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void SetWordWrap(bool wrap);
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bool DoesWordWrap() const;
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void SetMaxBytes(int32 max);
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int32 MaxBytes() const;
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void DisallowChar(uint32 aChar);
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void AllowChar(uint32 aChar);
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void SetAlignment(alignment flag);
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alignment Alignment() const;
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void SetAutoindent(bool state);
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bool DoesAutoindent() const;
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void SetColorSpace(color_space colors);
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color_space ColorSpace() const;
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void MakeResizable(bool resize, BView *resizeView = NULL);
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bool IsResizable() const;
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void SetDoesUndo(bool undo);
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bool DoesUndo() const;
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void HideTyping(bool enabled);
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bool IsTypingHidden(void) const;
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virtual void ResizeToPreferred();
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virtual void GetPreferredSize(float *width, float *height);
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virtual void AllAttached();
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virtual void AllDetached();
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2006-02-04 00:22:00 +03:00
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static text_run_array* AllocRunArray(int32 entryCount, int32 *outSize = NULL);
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static text_run_array* CopyRunArray(const text_run_array *orig, int32 countDelta = 0);
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static void FreeRunArray(text_run_array *array);
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static void * FlattenRunArray(const text_run_array *inArray, int32 *outSize = NULL);
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static text_run_array* UnflattenRunArray(const void *data, int32 *outSize = NULL);
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2002-10-23 17:54:44 +04:00
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protected:
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virtual void InsertText(const char *inText,
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int32 inLength,
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int32 inOffset,
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const text_run_array *inRuns);
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virtual void DeleteText(int32 fromOffset, int32 toOffset);
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public:
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virtual void Undo(BClipboard *clipboard);
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undo_state UndoState(bool *isRedo) const;
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protected:
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virtual void GetDragParameters(BMessage *drag,
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BBitmap **bitmap,
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BPoint *point,
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BHandler **handler);
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/*----- Private or reserved -----------------------------------------*/
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private:
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friend status_t _init_interface_kit_();
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friend class _BTextTrackState_;
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#if _PR2_COMPATIBLE_
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friend void _ReservedTextView2__9BTextViewFv(BTextView *object,
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BMessage *drag,
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BBitmap **bitmap,
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BPoint *point,
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BHandler **handler);
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#endif
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virtual void _ReservedTextView3();
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virtual void _ReservedTextView4();
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virtual void _ReservedTextView5();
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virtual void _ReservedTextView6();
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virtual void _ReservedTextView7();
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virtual void _ReservedTextView8();
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#if !_PR3_COMPATIBLE_
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virtual void _ReservedTextView9();
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virtual void _ReservedTextView10();
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virtual void _ReservedTextView11();
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virtual void _ReservedTextView12();
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#endif
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void InitObject(BRect textRect,
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const BFont *initialFont,
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const rgb_color *initialColor);
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void HandleBackspace();
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void HandleArrowKey(uint32 inArrowKey);
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void HandleDelete();
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void HandlePageKey(uint32 inPageKey);
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void HandleAlphaKey(const char *bytes, int32 numBytes);
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void Refresh(int32 fromOffset,
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int32 toOffset,
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bool erase,
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bool scroll);
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2004-11-11 13:07:40 +03:00
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void RecalculateLineBreaks(int32 *startLine, int32 *endLine);
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2002-10-23 17:54:44 +04:00
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int32 FindLineBreak(int32 fromOffset,
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float *outAscent,
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float *outDescent,
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float *ioWidth);
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float StyledWidth(int32 fromOffset,
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int32 length,
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float *outAscent = NULL,
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float *outDescent = NULL) const;
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float ActualTabWidth(float location) const;
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void DoInsertText(const char *inText,
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int32 inLength,
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int32 inOffset,
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const text_run_array *inRuns,
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_BTextChangeResult_ *outResult);
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void DoDeleteText(int32 fromOffset,
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int32 toOffset,
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_BTextChangeResult_ *outResult);
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void DrawLines(int32 startLine,
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int32 endLine,
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int32 startOffset = -1,
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bool erase = false);
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void DrawCaret(int32 offset);
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void InvertCaret();
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void DragCaret(int32 offset);
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void StopMouseTracking();
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bool PerformMouseUp(BPoint where);
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bool PerformMouseMoved(BPoint where,
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uint32 code);
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void TrackMouse(BPoint where, const BMessage *message,
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bool force = false);
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void TrackDrag(BPoint where);
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void InitiateDrag();
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bool MessageDropped(BMessage *inMessage,
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BPoint where,
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BPoint offset);
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void UpdateScrollbars();
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2002-12-03 20:20:12 +03:00
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void AutoResize(bool doredraw=true);
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2002-10-23 17:54:44 +04:00
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void NewOffscreen(float padding = 0.0F);
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void DeleteOffscreen();
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void Activate();
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void Deactivate();
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void NormalizeFont(BFont *font);
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uint32 CharClassification(int32 offset) const;
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int32 NextInitialByte(int32 offset) const;
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int32 PreviousInitialByte(int32 offset) const;
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bool GetProperty(BMessage *specifier,
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int32 form,
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const char *property,
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BMessage *reply);
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bool SetProperty(BMessage *specifier,
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int32 form,
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const char *property,
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BMessage *reply);
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bool CountProperties(BMessage *specifier,
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int32 form,
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const char *property,
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BMessage *reply);
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void HandleInputMethodChanged(BMessage *message);
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void HandleInputMethodLocationRequest();
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void CancelInputMethod();
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static void LockWidthBuffer();
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static void UnlockWidthBuffer();
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_BTextGapBuffer_* fText;
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_BLineBuffer_* fLines;
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_BStyleBuffer_* fStyles;
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BRect fTextRect;
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int32 fSelStart;
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int32 fSelEnd;
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bool fCaretVisible;
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bigtime_t fCaretTime;
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int32 fClickOffset;
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int32 fClickCount;
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bigtime_t fClickTime;
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int32 fDragOffset;
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uint8 fCursor;
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bool fActive;
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bool fStylable;
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float fTabWidth;
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bool fSelectable;
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bool fEditable;
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bool fWrap;
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int32 fMaxBytes;
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BList* fDisallowedChars;
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alignment fAlignment;
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bool fAutoindent;
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BBitmap* fOffscreen;
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color_space fColorSpace;
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bool fResizable;
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BView* fContainerView;
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_BUndoBuffer_* fUndo; /* was _reserved[0] */
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_BInlineInput_* fInline; /* was _reserved[1] */
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BMessageRunner * fDragRunner; /* was _reserved[2] */
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BMessageRunner * fClickRunner; /* was _reserved[3] */
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BPoint fWhere;
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_BTextTrackState_* fTrackingMouse; /* was _reserved[6] */
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_BTextChangeResult_* fTextChange; /* was _reserved[7] */
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uint32 _reserved[1]; /* was 8 */
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#if !_PR3_COMPATIBLE_
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uint32 _more_reserved[8];
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#endif
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static _BWidthBuffer_* sWidths;
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static sem_id sWidthSem;
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static int32 sWidthAtom;
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};
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/*-------------------------------------------------------------*/
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/*-------------------------------------------------------------*/
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#endif /* _TEXT_VIEW_H */
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