Initial revision

1 files changed, 281 insertions, 0 deletions

diff --git a/src/Editor.h b/src/Editor.h
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+// Scintilla source code edit control
+// Editor.h - defines the main editor class
+// Copyright 1998-2000 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};
+	int tickerID;
+		
+	Timer();
+};
+
+class LineLayout {
+public:
+	// Drawing is only performed for maxLineLength characters on each line.
+	enum {maxLineLength = 4000};
+	int numCharsInLine;
+	char chars[maxLineLength];
+	char styles[maxLineLength];
+	char indicators[maxLineLength];
+	int positions[maxLineLength];
+};
+
+class Editor : public DocWatcher {
+protected:	// ScintillaBase subclass needs access to much of Editor
+
+	// On GTK+, Scintilla is a container widget holding two scroll bars and a drawing area
+	// whereas on Windows there is just one window with both scroll bars turned on.
+	// Therefore, on GTK+ the following are separate windows but only one window on Windows.
+	Window wMain;	// The Scintilla parent window
+	Window wDraw;	// The text drawing area
+
+	// 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;
+	
+	bool hideSelection;
+	bool inOverstrike;
+
+	// 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;
+
+	int xOffset;				// Horizontal scrolled amount in pixels
+	int xCaretMargin;	// Ensure this many pixels visible on both sides of caret
+	
+	Surface pixmapLine;
+	Surface pixmapSelMargin;
+	Surface pixmapSelPattern;
+	// Intellimouse support - currently only implemented for Windows
+	unsigned int ucWheelScrollLines;
+	short cWheelDelta; //wheel delta from roll
+
+	KeyMap kmap;
+
+	Caret caret;
+	Timer timer;
+
+	Point lastClick;
+	unsigned int lastClickTime;
+	enum { selChar, selWord, selLine } selectionType;
+	Point ptMouseLast;
+	bool firstExpose;
+	bool inDragDrop;
+	bool dropWentOutside;
+	int posDrag;
+	int posDrop;
+	int lastXChosen;
+	int lineAnchor;
+	int originalAnchorPos;
+	int currentPos;
+	int anchor;
+	int topLine;
+	int posTopLine;
+	
+	bool needUpdateUI;
+	Position braces[2];
+	int bracesMatchStyle;
+	
+	int edgeState;
+	int theEdge;
+
+	enum { notPainting, painting, paintAbandoned } paintState;
+	PRectangle rcPaint;
+	bool paintingAllText;
+	
+	int modEventMask;
+	
+	char *dragChars;
+	int lenDrag;
+	bool dragIsRectangle;
+	enum { selStream, selRectangle, selRectangleFixed } selType;
+	int xStartSelect;
+	int xEndSelect;
+	
+	int caretPolicy;
+	int caretSlop;
+
+	int searchAnchor;
+
+#ifdef MACRO_SUPPORT
+	int recordingMacro;
+#endif
+
+	int foldFlags;
+	ContractionState cs;
+
+	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();
+
+	PRectangle GetClientRectangle();
+	PRectangle GetTextRectangle();
+	
+	int LinesOnScreen();
+	int LinesToScroll();
+	int MaxScrollPos();
+	Point LocationFromPosition(unsigned int pos);
+	int XFromPosition(unsigned int pos);
+	int PositionFromLocation(Point pt);
+	int PositionFromLineX(int line, int x);
+	int LineFromLocation(Point pt);
+	void SetTopLine(int topLineNew);
+	
+	void RedrawRect(PRectangle rc);
+	void Redraw();
+	void RedrawSelMargin();
+	PRectangle RectangleFromRange(int start, int end);
+	void InvalidateRange(int start, int end);
+	
+	int CurrentPosition();
+	bool SelectionEmpty();
+	int SelectionStart(int line=-1);
+	int SelectionEnd(int line=-1);
+	void SetSelection(int currentPos_, int anchor_);
+	void SetSelection(int currentPos_);
+	void SetEmptySelection(int currentPos_);
+	int MovePositionTo(int newPos, bool extend = false);
+	int MovePositionSoVisible(int pos, int moveDir);
+	void SetLastXChosen();
+
+	void ScrollTo(int line);
+	virtual void ScrollText(int linesToMove);
+	void HorizontalScrollTo(int xPos);
+	void EnsureCaretVisible(bool useMargin=true);
+	void ShowCaretAtCurrentPosition();
+	void DropCaret();
+	void InvalidateCaret();
+
+	void PaintSelMargin(Surface *surface, PRectangle &rc);
+        void LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayout &ll);
+	void DrawLine(Surface *surface, ViewStyle &vsDraw, int line, int xStart, 
+		PRectangle rcLine, LineLayout &ll);
+	void Paint(Surface *surfaceWindow, PRectangle rcArea);
+	long FormatRange(bool draw, FORMATRANGE *pfr);
+
+	virtual void SetVerticalScrollPos() = 0;
+	virtual void SetHorizontalScrollPos() = 0;
+	virtual bool ModifyScrollBars(int nMax, int nPage) = 0;
+	void SetScrollBarsTo(PRectangle rsClient);
+	void SetScrollBars();
+
+	virtual void AddChar(char ch);
+	void ClearSelection();
+	void ClearAll();
+	void Cut();
+	void PasteRectangular(int pos, const char *ptr, int len);
+	virtual void Copy() = 0;
+	virtual void Paste() = 0;
+	void Clear();
+	void SelectAll();
+	void Undo();
+	void Redo();
+	void DelChar();
+	void DelCharBack();
+	virtual void ClaimSelection() = 0;
+
+	virtual void NotifyChange() = 0;
+	virtual void NotifyFocus(bool focus);
+	virtual void NotifyParent(SCNotification scn) = 0;
+	virtual void NotifyStyleNeeded(int endStyleNeeded);
+	void NotifyChar(char ch);
+	void NotifySavePoint(bool isSavePoint);
+	void NotifyModifyAttempt();
+	virtual void NotifyDoubleClick(Point pt, bool shift);
+	void NotifyUpdateUI();
+	bool NotifyMarginClick(Point pt, bool shift, bool ctrl, bool alt);
+	void NotifyNeedShown(int pos, int len);
+	
+	void NotifyModifyAttempt(Document *document, void *userData);
+	void NotifySavePoint(Document *document, void *userData, bool atSavePoint);
+	void NotifyModified(Document *document, DocModification mh, void *userData);
+	void NotifyDeleted(Document *document, void *userData);
+	
+#ifdef MACRO_SUPPORT
+	void NotifyMacroRecord(UINT iMessage, WPARAM wParam, LPARAM lParam);
+#endif
+
+	void PageMove(int direction, bool extend=false);
+	virtual int KeyCommand(UINT iMessage);
+	virtual int KeyDefault(int /* key */, int /*modifiers*/);
+	int KeyDown(int key, bool shift, bool ctrl, bool alt);
+
+	bool GetWhitespaceVisible();
+	void SetWhitespaceVisible(bool view);
+
+	void Indent(bool forwards);
+
+	long FindText(UINT iMessage,WPARAM wParam,LPARAM lParam);
+	void SearchAnchor();
+	long SearchText(UINT iMessage,WPARAM wParam,LPARAM lParam);
+	void GoToLine(int lineNo);
+
+	char *CopyRange(int start, int end);
+	int SelectionRangeLength();
+	char *CopySelectionRange();
+	void CopySelectionIntoDrag();
+	void SetDragPosition(int newPos);
+	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);
+	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();
+	virtual void SetTicking(bool on) = 0;
+	virtual void SetMouseCapture(bool on) = 0;
+	virtual bool HaveMouseCapture() = 0;
+
+	void CheckForChangeOutsidePaint(Range r);
+	int BraceMatch(int position, int maxReStyle);
+	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 line);
+
+	virtual LRESULT DefWndProc(UINT iMessage, WPARAM wParam, LPARAM lParam) = 0;
+	
+public:
+	// Public so scintilla_send_message can use it
+	virtual LRESULT WndProc(UINT iMessage, WPARAM wParam, LPARAM lParam);
+	// Public so scintilla_set_id can use it
+	int ctrlID;	
+};
+
+#endif