1 files changed, 582 insertions, 0 deletions
diff --git a/src/Editor.h b/src/Editor.h
new file mode 100755
index 0000000..fe7be26
--- /dev/null
+++ b/src/Editor.h
@@ -0,0 +1,582 @@
+// Scintilla source code edit control
+/** @file Editor.h
+ ** Defines the main editor class.
+ **/
+// Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#ifndef EDITOR_H
+#define EDITOR_H
+
+/**
+ */
+class Caret {
+public:
+	bool active;
+	bool on;
+	int period;
+
+	Caret();
+};
+
+/**
+ */
+class Timer {
+public:
+	bool ticking;
+	int ticksToWait;
+	enum {tickSize = 100};
+	TickerID tickerID;
+
+	Timer();
+};
+
+/**
+ */
+class Idler {
+public:
+	bool state;
+	IdlerID idlerID;
+
+	Idler();
+};
+
+/**
+ */
+class LineLayout {
+private:
+	friend class LineLayoutCache;
+	int *lineStarts;
+	int lenLineStarts;
+	/// Drawing is only performed for @a maxLineLength characters on each line.
+	int lineNumber;
+	bool inCache;
+public:
+	enum { wrapWidthInfinite = 0x7ffffff };
+	int maxLineLength;
+	int numCharsInLine;
+	enum validLevel { llInvalid, llCheckTextAndStyle, llPositions, llLines } validity;
+	int xHighlightGuide;
+	bool highlightColumn;
+	int selStart;
+	int selEnd;
+	bool containsCaret;
+	int edgeColumn;
+	char *chars;
+	unsigned char *styles;
+	int styleBitsSet;
+	char *indicators;
+	int *positions;
+	char bracePreviousStyles[2];
+
+	// Hotspot support
+	int hsStart;
+	int hsEnd;
+
+	// Wrapped line support
+	int widthLine;
+	int lines;
+
+	LineLayout(int maxLineLength_);
+	virtual ~LineLayout();
+	void Resize(int maxLineLength_);
+	void Free();
+	void Invalidate(validLevel validity_);
+	int LineStart(int line) {
+		if (line <= 0) {
+			return 0;
+		} else if ((line >= lines) || !lineStarts) {
+			return numCharsInLine;
+		} else {
+			return lineStarts[line];
+		}
+	}
+	void SetLineStart(int line, int start);
+	void SetBracesHighlight(Range rangeLine, Position braces[],
+		char bracesMatchStyle, int xHighlight);
+	void RestoreBracesHighlight(Range rangeLine, Position braces[]);
+};
+
+/**
+ */
+class LineLayoutCache {
+	int level;
+	int length;
+	int size;
+	LineLayout **cache;
+	bool allInvalidated;
+	int styleClock;
+	int useCount;
+	void Allocate(int length_);
+	void AllocateForLevel(int linesOnScreen, int linesInDoc);
+public:
+	LineLayoutCache();
+	virtual ~LineLayoutCache();
+	void Deallocate();
+	enum {
+		llcNone=SC_CACHE_NONE,
+		llcCaret=SC_CACHE_CARET,
+		llcPage=SC_CACHE_PAGE,
+		llcDocument=SC_CACHE_DOCUMENT
+	};
+	void Invalidate(LineLayout::validLevel validity_);
+	void SetLevel(int level_);
+	int GetLevel() { return level; }
+	LineLayout *Retrieve(int lineNumber, int lineCaret, int maxChars, int styleClock_,
+		int linesOnScreen, int linesInDoc);
+	void Dispose(LineLayout *ll);
+};
+
+/**
+ * Hold a piece of text selected for copying or dragging.
+ * The text is expected to hold a terminating '\0' and this is counted in len.
+ */
+class SelectionText {
+public:
+	char *s;
+	int len;
+	bool rectangular;
+	int codePage;
+	int characterSet;
+	SelectionText() : s(0), len(0), rectangular(false), codePage(0), characterSet(0) {}
+	~SelectionText() {
+		Free();
+	}
+	void Free() {
+		Set(0, 0, 0, 0, false);
+	}
+	void Set(char *s_, int len_, int codePage_, int characterSet_, bool rectangular_) {
+		delete []s;
+		s = s_;
+		if (s)
+			len = len_;
+		else
+			len = 0;
+		codePage = codePage_;
+		characterSet = characterSet_;
+		rectangular = rectangular_;
+	}
+	void Copy(const char *s_, int len_, int codePage_, int characterSet_, bool rectangular_) {
+		delete []s;
+		s = new char[len_];
+		if (s) {
+			len = len_;
+			for (int i = 0; i < len_; i++) {
+				s[i] = s_[i];
+			}
+		} else {
+			len = 0;
+		}
+		codePage = codePage_;
+		characterSet = characterSet_;
+		rectangular = rectangular_;
+	}
+	void Copy(const SelectionText &other) {
+		Copy(other.s, other.len, other.codePage, other.characterSet, other.rectangular);
+	}
+};
+
+/**
+ */
+class Editor : public DocWatcher {
+	// Private so Editor objects can not be copied
+	Editor(const Editor &) : DocWatcher() {}
+	Editor &operator=(const Editor &) { return *this; }
+
+protected:	// ScintillaBase subclass needs access to much of Editor
+
+	/** On GTK+, Scintilla is a container widget holding two scroll bars
+	 * whereas on Windows there is just one window with both scroll bars turned on. */
+	Window wMain;	///< The Scintilla parent window
+
+	/** Style resources may be expensive to allocate so are cached between uses.
+	 * When a style attribute is changed, this cache is flushed. */
+	bool stylesValid;
+	ViewStyle vs;
+	Palette palette;
+
+	int printMagnification;
+	int printColourMode;
+	int printWrapState;
+	int cursorMode;
+	int controlCharSymbol;
+
+	bool hasFocus;
+	bool hideSelection;
+	bool inOverstrike;
+	int errorStatus;
+	bool mouseDownCaptures;
+
+	/** In bufferedDraw mode, graphics operations are drawn to a pixmap and then copied to
+	 * the screen. This avoids flashing but is about 30% slower. */
+	bool bufferedDraw;
+	/** In twoPhaseDraw mode, drawing is performed in two phases, first the background
+	* and then the foreground. This avoids chopping off characters that overlap the next run. */
+	bool twoPhaseDraw;
+
+	int xOffset;		///< Horizontal scrolled amount in pixels
+	int xCaretMargin;	///< Ensure this many pixels visible on both sides of caret
+	bool horizontalScrollBarVisible;
+	int scrollWidth;
+	bool verticalScrollBarVisible;
+	bool endAtLastLine;
+	bool caretSticky;
+
+	Surface *pixmapLine;
+	Surface *pixmapSelMargin;
+	Surface *pixmapSelPattern;
+	Surface *pixmapIndentGuide;
+	Surface *pixmapIndentGuideHighlight;
+
+	LineLayoutCache llc;
+
+	KeyMap kmap;
+
+	Caret caret;
+	Timer timer;
+	Timer autoScrollTimer;
+	enum { autoScrollDelay = 200 };
+
+	Idler idler;
+
+	Point lastClick;
+	unsigned int lastClickTime;
+	int dwellDelay;
+	int ticksToDwell;
+	bool dwelling;
+	enum { selChar, selWord, selLine } selectionType;
+	Point ptMouseLast;
+	bool inDragDrop;
+	bool dropWentOutside;
+	int posDrag;
+	int posDrop;
+	int lastXChosen;
+	int lineAnchor;
+	int originalAnchorPos;
+	int currentPos;
+	int anchor;
+	int targetStart;
+	int targetEnd;
+	int searchFlags;
+	int topLine;
+	int posTopLine;
+	int lengthForEncode;
+
+	bool needUpdateUI;
+	Position braces[2];
+	int bracesMatchStyle;
+	int highlightGuideColumn;
+
+	int theEdge;
+
+	enum { notPainting, painting, paintAbandoned } paintState;
+	PRectangle rcPaint;
+	bool paintingAllText;
+
+	int modEventMask;
+
+	SelectionText drag;
+	enum selTypes { noSel, selStream, selRectangle, selLines };
+	selTypes selType;
+	bool moveExtendsSelection;
+	int xStartSelect;	///< x position of start of rectangular selection
+	int xEndSelect;		///< x position of end of rectangular selection
+	bool primarySelection;
+
+	int caretXPolicy;
+	int caretXSlop;	///< Ensure this many pixels visible on both sides of caret
+
+	int caretYPolicy;
+	int caretYSlop;	///< Ensure this many lines visible on both sides of caret
+
+	int visiblePolicy;
+	int visibleSlop;
+
+	int searchAnchor;
+
+	bool recordingMacro;
+
+	int foldFlags;
+	ContractionState cs;
+
+	// Hotspot support
+	int hsStart;
+	int hsEnd;
+
+	// Wrapping support
+	enum { eWrapNone, eWrapWord, eWrapChar } wrapState;
+	enum { wrapLineLarge = 0x7ffffff };
+	int wrapWidth;
+	int wrapStart;
+	int wrapEnd;
+	int wrapVisualFlags;
+	int wrapVisualFlagsLocation;
+	int wrapVisualStartIndent;
+	int actualWrapVisualStartIndent;
+
+	bool convertPastes;
+
+	Document *pdoc;
+
+	Editor();
+	virtual ~Editor();
+	virtual void Initialise() = 0;
+	virtual void Finalise();
+
+	void InvalidateStyleData();
+	void InvalidateStyleRedraw();
+	virtual void RefreshColourPalette(Palette &pal, bool want);
+	void RefreshStyleData();
+	void DropGraphics();
+
+	virtual PRectangle GetClientRectangle();
+	PRectangle GetTextRectangle();
+
+	int LinesOnScreen();
+	int LinesToScroll();
+	int MaxScrollPos();
+	Point LocationFromPosition(int pos);
+	int XFromPosition(int pos);
+	int PositionFromLocation(Point pt);
+	int PositionFromLocationClose(Point pt);
+	int PositionFromLineX(int line, int x);
+	int LineFromLocation(Point pt);
+	void SetTopLine(int topLineNew);
+
+	bool AbandonPaint();
+	void RedrawRect(PRectangle rc);
+	void Redraw();
+	void RedrawSelMargin(int line=-1);
+	PRectangle RectangleFromRange(int start, int end);
+	void InvalidateRange(int start, int end);
+
+	int CurrentPosition();
+	bool SelectionEmpty();
+	int SelectionStart();
+	int SelectionEnd();
+	void SetRectangularRange();
+	void InvalidateSelection(int currentPos_, int anchor_);
+	void SetSelection(int currentPos_, int anchor_);
+	void SetSelection(int currentPos_);
+	void SetEmptySelection(int currentPos_);
+	bool RangeContainsProtected(int start, int end) const;
+	bool SelectionContainsProtected();
+	int MovePositionOutsideChar(int pos, int moveDir, bool checkLineEnd=true);
+	int MovePositionTo(int newPos, selTypes sel=noSel, bool ensureVisible=true);
+	int MovePositionSoVisible(int pos, int moveDir);
+	void SetLastXChosen();
+
+	void ScrollTo(int line, bool moveThumb=true);
+	virtual void ScrollText(int linesToMove);
+	void HorizontalScrollTo(int xPos);
+	void MoveCaretInsideView(bool ensureVisible=true);
+	int DisplayFromPosition(int pos);
+	void EnsureCaretVisible(bool useMargin=true, bool vert=true, bool horiz=true);
+	void ShowCaretAtCurrentPosition();
+	void DropCaret();
+	void InvalidateCaret();
+	virtual void UpdateSystemCaret();
+
+	void NeedWrapping(int docLineStart = 0, int docLineEnd = wrapLineLarge);
+	bool WrapLines(bool fullWrap, int priorityWrapLineStart);
+	void LinesJoin();
+	void LinesSplit(int pixelWidth);
+
+	int SubstituteMarkerIfEmpty(int markerCheck, int markerDefault);
+	void PaintSelMargin(Surface *surface, PRectangle &rc);
+	LineLayout *RetrieveLineLayout(int lineNumber);
+	void LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayout *ll,
+		int width=LineLayout::wrapWidthInfinite);
+	ColourAllocated SelectionBackground(ViewStyle &vsDraw);
+	ColourAllocated TextBackground(ViewStyle &vsDraw, bool overrideBackground, ColourAllocated background, bool inSelection, bool inHotspot, int styleMain, int i, LineLayout *ll);
+	void DrawIndentGuide(Surface *surface, int lineVisible, int lineHeight, int start, PRectangle rcSegment, bool highlight);
+	void DrawWrapMarker(Surface *surface, PRectangle rcPlace, bool isEndMarker, ColourAllocated wrapColour);
+	void DrawEOL(Surface *surface, ViewStyle &vsDraw, PRectangle rcLine, LineLayout *ll,
+		int line, int lineEnd, int xStart, int subLine, int subLineStart,
+		bool overrideBackground, ColourAllocated background,
+		bool drawWrapMark, ColourAllocated wrapColour);
+	void DrawLine(Surface *surface, ViewStyle &vsDraw, int line, int lineVisible, int xStart,
+		PRectangle rcLine, LineLayout *ll, int subLine=0);
+	void RefreshPixMaps(Surface *surfaceWindow);
+	void Paint(Surface *surfaceWindow, PRectangle rcArea);
+	long FormatRange(bool draw, RangeToFormat *pfr);
+	int TextWidth(int style, const char *text);
+
+	virtual void SetVerticalScrollPos() = 0;
+	virtual void SetHorizontalScrollPos() = 0;
+	virtual bool ModifyScrollBars(int nMax, int nPage) = 0;
+	virtual void ReconfigureScrollBars();
+	void SetScrollBars();
+	void ChangeSize();
+
+	void AddChar(char ch);
+	virtual void AddCharUTF(char *s, unsigned int len, bool treatAsDBCS=false);
+	void ClearSelection();
+	void ClearAll();
+    	void ClearDocumentStyle();
+	void Cut();
+	void PasteRectangular(int pos, const char *ptr, int len);
+	virtual void Copy() = 0;
+	virtual bool CanPaste();
+	virtual void Paste() = 0;
+	void Clear();
+	void SelectAll();
+	void Undo();
+	void Redo();
+	void DelChar();
+	void DelCharBack(bool allowLineStartDeletion);
+	virtual void ClaimSelection() = 0;
+
+	virtual void NotifyChange() = 0;
+	virtual void NotifyFocus(bool focus);
+	virtual int GetCtrlID() { return ctrlID; }
+	virtual void NotifyParent(SCNotification scn) = 0;
+	virtual void NotifyStyleToNeeded(int endStyleNeeded);
+	void NotifyChar(int ch);
+	void NotifyMove(int position);
+	void NotifySavePoint(bool isSavePoint);
+	void NotifyModifyAttempt();
+	virtual void NotifyDoubleClick(Point pt, bool shift);
+	void NotifyHotSpotClicked(int position, bool shift, bool ctrl, bool alt);
+	void NotifyHotSpotDoubleClicked(int position, bool shift, bool ctrl, bool alt);
+	void NotifyUpdateUI();
+	void NotifyPainted();
+	bool NotifyMarginClick(Point pt, bool shift, bool ctrl, bool alt);
+	void NotifyNeedShown(int pos, int len);
+	void NotifyDwelling(Point pt, bool state);
+	void NotifyZoom();
+
+	void NotifyModifyAttempt(Document *document, void *userData);
+	void NotifySavePoint(Document *document, void *userData, bool atSavePoint);
+	void CheckModificationForWrap(DocModification mh);
+	void NotifyModified(Document *document, DocModification mh, void *userData);
+	void NotifyDeleted(Document *document, void *userData);
+	void NotifyStyleNeeded(Document *doc, void *userData, int endPos);
+	void NotifyMacroRecord(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
+
+	void PageMove(int direction, selTypes sel=noSel, bool stuttered = false);
+	void ChangeCaseOfSelection(bool makeUpperCase);
+	void LineTranspose();
+	void Duplicate(bool forLine);
+	virtual void CancelModes();
+	void NewLine();
+	void CursorUpOrDown(int direction, selTypes sel=noSel);
+	void ParaUpOrDown(int direction, selTypes sel=noSel);
+	int StartEndDisplayLine(int pos, bool start);
+	virtual int KeyCommand(unsigned int iMessage);
+	virtual int KeyDefault(int /* key */, int /*modifiers*/);
+	int KeyDown(int key, bool shift, bool ctrl, bool alt, bool *consumed=0);
+
+	int GetWhitespaceVisible();
+	void SetWhitespaceVisible(int view);
+
+	void Indent(bool forwards);
+
+	long FindText(uptr_t wParam, sptr_t lParam);
+	void SearchAnchor();
+	long SearchText(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
+	long SearchInTarget(const char *text, int length);
+	void GoToLine(int lineNo);
+
+	virtual void CopyToClipboard(const SelectionText &selectedText) = 0;
+	char *CopyRange(int start, int end);
+	void CopySelectionFromRange(SelectionText *ss, int start, int end);
+	void CopySelectionRange(SelectionText *ss);
+	void CopyRangeToClipboard(int start, int end);
+	void CopyText(int length, const char *text);
+	void SetDragPosition(int newPos);
+	virtual void DisplayCursor(Window::Cursor c);
+	virtual void StartDrag();
+	void DropAt(int position, const char *value, bool moving, bool rectangular);
+	/** PositionInSelection returns 0 if position in selection, -1 if position before selection, and 1 if after.
+	 * Before means either before any line of selection or before selection on its line, with a similar meaning to after. */
+	int PositionInSelection(int pos);
+	bool PointInSelection(Point pt);
+	bool PointInSelMargin(Point pt);
+	void LineSelection(int lineCurrent_, int lineAnchor_);
+	void DwellEnd(bool mouseMoved);
+	virtual void ButtonDown(Point pt, unsigned int curTime, bool shift, bool ctrl, bool alt);
+	void ButtonMove(Point pt);
+	void ButtonUp(Point pt, unsigned int curTime, bool ctrl);
+
+	void Tick();
+	bool Idle();
+	virtual void SetTicking(bool on) = 0;
+	virtual bool SetIdle(bool) { return false; }
+	virtual void SetMouseCapture(bool on) = 0;
+	virtual bool HaveMouseCapture() = 0;
+	void SetFocusState(bool focusState);
+
+	virtual bool PaintContains(PRectangle rc);
+	bool PaintContainsMargin();
+	void CheckForChangeOutsidePaint(Range r);
+	void SetBraceHighlight(Position pos0, Position pos1, int matchStyle);
+
+	void SetDocPointer(Document *document);
+
+	void Expand(int &line, bool doExpand);
+	void ToggleContraction(int line);
+	void EnsureLineVisible(int lineDoc, bool enforcePolicy);
+	int ReplaceTarget(bool replacePatterns, const char *text, int length=-1);
+
+	bool PositionIsHotspot(int position);
+	bool PointIsHotspot(Point pt);
+	void SetHotSpotRange(Point *pt);
+	void GetHotSpotRange(int& hsStart, int& hsEnd);
+
+	int CodePage() const;
+	virtual bool ValidCodePage(int /* codePage */) const { return true; }
+	int WrapCount(int line);
+
+	virtual sptr_t DefWndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) = 0;
+
+public:
+	// Public so the COM thunks can access it.
+	bool IsUnicodeMode() const;
+	// Public so scintilla_send_message can use it.
+	virtual sptr_t WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
+	// Public so scintilla_set_id can use it.
+	int ctrlID;
+	friend class AutoSurface;
+	friend class SelectionLineIterator;
+};
+
+/**
+ * A smart pointer class to ensure Surfaces are set up and deleted correctly.
+ */
+class AutoSurface {
+private:
+	Surface *surf;
+public:
+	AutoSurface(Editor *ed) : surf(0) {
+		if (ed->wMain.GetID()) {
+			surf = Surface::Allocate();
+			if (surf) {
+				surf->Init(ed->wMain.GetID());
+				surf->SetUnicodeMode(SC_CP_UTF8 == ed->CodePage());
+				surf->SetDBCSMode(ed->CodePage());
+			}
+		}
+	}
+	AutoSurface(SurfaceID sid, Editor *ed) : surf(0) {
+		if (ed->wMain.GetID()) {
+			surf = Surface::Allocate();
+			if (surf) {
+				surf->Init(sid, ed->wMain.GetID());
+				surf->SetUnicodeMode(SC_CP_UTF8 == ed->CodePage());
+				surf->SetDBCSMode(ed->CodePage());
+			}
+		}
+	}
+	~AutoSurface() {
+		delete surf;
+	}
+	Surface *operator->() const {
+		return surf;
+	}
+	operator Surface *() const {
+		return surf;
+	}
+};
+
+#endif