470 lines
14 KiB
C++
470 lines
14 KiB
C++
/*
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* Copyright 2007-2009, Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _TEXTVIEW_H
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#define _TEXTVIEW_H
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#include <Locker.h>
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#include <View.h>
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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 BMessageRunner;
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struct text_run {
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int32 offset;
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BFont font;
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rgb_color color;
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};
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struct text_run_array {
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int32 count;
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text_run runs[1];
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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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namespace BPrivate {
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class TextGapBuffer;
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}
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class BTextView : public BView {
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public:
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BTextView(BRect frame, const char* name,
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BRect textRect, uint32 resizeMask,
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uint32 flags
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= B_WILL_DRAW | B_PULSE_NEEDED);
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BTextView(BRect frame, const char* name,
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BRect textRect, const BFont* initialFont,
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const rgb_color* initialColor,
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uint32 resizeMask, uint32 flags);
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BTextView(const char* name,
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uint32 flags
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= B_WILL_DRAW | B_PULSE_NEEDED);
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BTextView(const char* name,
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const BFont* initialFont,
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const rgb_color* initialColor,
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uint32 flags);
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BTextView(BMessage* archive);
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virtual ~BTextView();
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static BArchivable* Instantiate(BMessage* archive);
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virtual status_t Archive(BMessage* archive,
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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 updateRect);
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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, uint32 code,
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const BMessage* dragMessage);
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virtual void WindowActivated(bool active);
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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 newWidth, float newHeight);
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virtual void MakeFocus(bool focus = 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, BMessage* specifier,
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int32 form, const char* property);
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virtual status_t GetSupportedSuites(BMessage* data);
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void SetText(const char* text,
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const text_run_array* runs = NULL);
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void SetText(const char* text, int32 length,
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const text_run_array* runs = NULL);
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void SetText(BFile* file, int32 offset,
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int32 length,
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const text_run_array* runs = NULL);
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void Insert(const char* text,
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const text_run_array* runs = NULL);
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void Insert(const char* text, int32 length,
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const text_run_array* runs = NULL);
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void Insert(int32 offset, const char* text,
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int32 length,
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const text_run_array* runs = 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, int32 length,
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char* buffer) const;
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uint8 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 lineNumber);
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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* message);
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virtual void Select(int32 startOffset, int32 endOffset);
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void SelectAll();
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void GetSelection(int32* _start, int32* _end) const;
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void SetFontAndColor(const BFont* font,
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uint32 mode = B_FONT_ALL,
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const rgb_color* color = NULL);
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void SetFontAndColor(int32 startOffset,
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int32 endOffset, const BFont* font,
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uint32 mode = B_FONT_ALL,
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const rgb_color* color = NULL);
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void GetFontAndColor(int32 offset, BFont* _font,
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rgb_color* _color = NULL) const;
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void GetFontAndColor(BFont* _font, uint32* _mode,
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rgb_color* _color = NULL,
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bool* _sameColor = NULL) const;
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void SetRunArray(int32 startOffset, int32 endOffset,
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const text_run_array* runs);
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text_run_array* RunArray(int32 startOffset, int32 endOffset,
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int32* _size = 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 offset,
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float* _height = 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 offset, int32* _fromOffset,
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int32* _toOffset);
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virtual bool CanEndLine(int32 offset);
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float LineWidth(int32 lineNumber = 0) const;
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float LineHeight(int32 lineNumber = 0) const;
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float TextHeight(int32 startLine,
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int32 endLine) const;
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void GetTextRegion(int32 startOffset,
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int32 endOffset, BRegion* outRegion) const;
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virtual void ScrollToOffset(int32 offset);
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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 SetInsets(float left, float top, float right,
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float bottom);
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void GetInsets(float* _left, float* _top,
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float* _right, float* _bottom) 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 character);
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void AllowChar(uint32 character);
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void SetAlignment(alignment align);
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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,
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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() const;
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virtual void ResizeToPreferred();
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virtual void GetPreferredSize(float* _width, float* _height);
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virtual BSize MinSize();
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virtual BSize MaxSize();
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virtual BSize PreferredSize();
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virtual bool HasHeightForWidth();
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virtual void GetHeightForWidth(float width, float* min,
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float* max, float* preferred);
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protected:
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virtual void LayoutInvalidated(bool descendants);
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virtual void DoLayout();
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public:
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virtual void AllAttached();
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virtual void AllDetached();
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static text_run_array* AllocRunArray(int32 entryCount,
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int32* outSize = NULL);
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static text_run_array* CopyRunArray(const text_run_array* orig,
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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* runArray,
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int32* _size = NULL);
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static text_run_array* UnflattenRunArray(const void* data,
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int32* _size = NULL);
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protected:
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virtual void InsertText(const char* text, int32 length,
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int32 offset, const text_run_array* runs);
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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, BPoint* point,
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BHandler** _handler);
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// FBC padding and forbidden methods
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public:
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virtual status_t Perform(perform_code code, void* data);
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private:
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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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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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private:
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class InlineInput;
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struct LayoutData;
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class LineBuffer;
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class StyleBuffer;
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class TextTrackState;
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class UndoBuffer;
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// UndoBuffer derivatives
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class CutUndoBuffer;
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class PasteUndoBuffer;
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class ClearUndoBuffer;
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class DropUndoBuffer;
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class TypingUndoBuffer;
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friend class TextTrackState;
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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 _ValidateLayoutData();
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void _ResetTextRect();
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void _HandleBackspace();
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void _HandleArrowKey(uint32 arrowKey,
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int32 modifiers = -1);
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void _HandleDelete();
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void _HandlePageKey(uint32 pageKey,
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int32 modifiers = -1);
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void _HandleAlphaKey(const char* bytes,
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int32 numBytes);
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void _Refresh(int32 fromOffset, int32 toOffset,
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bool scroll);
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void _RecalculateLineBreaks(int32* startLine,
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int32* endLine);
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int32 _FindLineBreak(int32 fromOffset,
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float* _ascent, float* _descent,
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float* inOutWidth);
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float _StyledWidth(int32 fromOffset, int32 length,
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float* _ascent = NULL,
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float* _descent = NULL) const;
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float _TabExpandedStyledWidth(int32 offset,
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int32 length, float* _ascent = NULL,
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float* _descent = NULL) const;
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float _ActualTabWidth(float location) const;
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void _DoInsertText(const char* text, int32 length,
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int32 offset, const text_run_array* runs);
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void _DoDeleteText(int32 fromOffset,
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int32 toOffset);
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void _DrawLine(BView* view, const int32 &startLine,
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const int32& startOffset,
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const bool& erase, BRect& eraseRect,
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BRegion& inputRegion);
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void _DrawLines(int32 startLine, int32 endLine,
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int32 startOffset = -1,
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bool erase = false);
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void _RequestDrawLines(int32 startLine,
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int32 endLine);
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void _DrawCaret(int32 offset, bool visible);
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void _ShowCaret();
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void _HideCaret();
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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, uint32 code);
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void _TrackMouse(BPoint where,
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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* message,
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BPoint where, BPoint offset);
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void _PerformAutoScrolling();
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void _UpdateScrollbars();
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void _ScrollBy(float horizontalStep,
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float verticalStep);
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void _ScrollTo(float x, float y);
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void _AutoResize(bool doRedraw = true);
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void _NewOffscreen(float padding = 0.0);
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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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void _SetRunArray(int32 startOffset, int32 endOffset,
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const text_run_array* runs);
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void _ApplyStyleRange(int32 fromOffset,
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int32 toOffset,
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uint32 mode = B_FONT_ALL,
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const BFont* font = NULL,
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const rgb_color* color = NULL,
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bool syncNullStyle = true);
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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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int32 _PreviousLineStart(int32 offset);
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int32 _NextLineEnd(int32 offset);
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int32 _PreviousWordBoundary(int32 offset);
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int32 _NextWordBoundary(int32 offset);
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int32 _PreviousWordStart(int32 offset);
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int32 _NextWordEnd(int32 offset);
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bool _GetProperty(BMessage* specifier, int32 form,
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const char* property, BMessage* reply);
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bool _SetProperty(BMessage* specifier, int32 form,
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const char* property, BMessage* reply);
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bool _CountProperties(BMessage* specifier,
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int32 form, 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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int32 _LineAt(int32 offset) const;
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int32 _LineAt(const BPoint& point) const;
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bool _IsOnEmptyLastLine(int32 offset) const;
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float _NullStyleHeight() const;
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void _ShowContextMenu(BPoint where);
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void _FilterDisallowedChars(char* text,
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ssize_t& length, text_run_array* runArray);
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private:
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BPrivate::TextGapBuffer* fText;
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LineBuffer* fLines;
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StyleBuffer* 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 fCaretOffset;
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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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UndoBuffer* fUndo;
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InlineInput* fInline;
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BMessageRunner* fDragRunner;
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BMessageRunner* fClickRunner;
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BPoint fWhere;
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TextTrackState* fTrackingMouse;
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float fMinTextRectWidth;
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LayoutData* fLayoutData;
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int32 fLastClickOffset;
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bool fInstalledNavigateCommandWordwiseShortcuts;
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bool fInstalledNavigateOptionWordwiseShortcuts;
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bool fInstalledNavigateOptionLinewiseShortcuts;
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bool fInstalledNavigateHomeEndDocwiseShortcuts;
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bool fInstalledSelectCommandWordwiseShortcuts;
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bool fInstalledSelectOptionWordwiseShortcuts;
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bool fInstalledSelectOptionLinewiseShortcuts;
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bool fInstalledSelectHomeEndDocwiseShortcuts;
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uint32 _reserved[6];
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};
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#endif // _TEXTVIEW_H
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