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534
wxWidgets/include/wx/univ/textctrl.h
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534
wxWidgets/include/wx/univ/textctrl.h
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/univ/textctrl.h
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// Purpose: wxTextCtrl class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 15.09.00
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// RCS-ID: $Id: textctrl.h 61872 2009-09-09 22:37:05Z VZ $
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// Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UNIV_TEXTCTRL_H_
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#define _WX_UNIV_TEXTCTRL_H_
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class WXDLLEXPORT wxCaret;
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class WXDLLEXPORT wxTextCtrlCommandProcessor;
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#include "wx/scrolwin.h" // for wxScrollHelper
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#include "wx/univ/inphand.h"
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// ----------------------------------------------------------------------------
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// wxTextCtrl actions
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// ----------------------------------------------------------------------------
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// cursor movement and also selection and delete operations
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#define wxACTION_TEXT_GOTO wxT("goto") // to pos in numArg
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#define wxACTION_TEXT_FIRST wxT("first") // go to pos 0
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#define wxACTION_TEXT_LAST wxT("last") // go to last pos
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#define wxACTION_TEXT_HOME wxT("home")
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#define wxACTION_TEXT_END wxT("end")
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#define wxACTION_TEXT_LEFT wxT("left")
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#define wxACTION_TEXT_RIGHT wxT("right")
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#define wxACTION_TEXT_UP wxT("up")
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#define wxACTION_TEXT_DOWN wxT("down")
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#define wxACTION_TEXT_WORD_LEFT wxT("wordleft")
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#define wxACTION_TEXT_WORD_RIGHT wxT("wordright")
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#define wxACTION_TEXT_PAGE_UP wxT("pageup")
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#define wxACTION_TEXT_PAGE_DOWN wxT("pagedown")
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// clipboard operations
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#define wxACTION_TEXT_COPY wxT("copy")
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#define wxACTION_TEXT_CUT wxT("cut")
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#define wxACTION_TEXT_PASTE wxT("paste")
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// insert text at the cursor position: the text is in strArg of PerformAction
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#define wxACTION_TEXT_INSERT wxT("insert")
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// if the action starts with either of these prefixes and the rest of the
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// string is one of the movement commands, it means to select/delete text from
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// the current cursor position to the new one
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#define wxACTION_TEXT_PREFIX_SEL wxT("sel")
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#define wxACTION_TEXT_PREFIX_DEL wxT("del")
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// mouse selection
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#define wxACTION_TEXT_ANCHOR_SEL wxT("anchorsel")
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#define wxACTION_TEXT_EXTEND_SEL wxT("extendsel")
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#define wxACTION_TEXT_SEL_WORD wxT("wordsel")
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#define wxACTION_TEXT_SEL_LINE wxT("linesel")
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// undo or redo
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#define wxACTION_TEXT_UNDO wxT("undo")
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#define wxACTION_TEXT_REDO wxT("redo")
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// ----------------------------------------------------------------------------
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// wxTextCtrl
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxTextCtrl : public wxTextCtrlBase,
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public wxScrollHelper
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{
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public:
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// creation
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// --------
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wxTextCtrl() : wxScrollHelper(this) { Init(); }
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wxTextCtrl(wxWindow *parent,
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wxWindowID id,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxTextCtrlNameStr)
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: wxScrollHelper(this)
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{
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Init();
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Create(parent, id, value, pos, size, style, validator, name);
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}
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxTextCtrlNameStr);
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virtual ~wxTextCtrl();
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// implement base class pure virtuals
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// ----------------------------------
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virtual wxString GetValue() const;
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virtual int GetLineLength(wxTextCoord lineNo) const;
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virtual wxString GetLineText(wxTextCoord lineNo) const;
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virtual int GetNumberOfLines() const;
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virtual bool IsModified() const;
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virtual bool IsEditable() const;
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// If the return values from and to are the same, there is no selection.
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virtual void GetSelection(wxTextPos* from, wxTextPos* to) const;
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// operations
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// ----------
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// editing
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virtual void Clear();
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virtual void Replace(wxTextPos from, wxTextPos to, const wxString& value);
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virtual void Remove(wxTextPos from, wxTextPos to);
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// sets/clears the dirty flag
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virtual void MarkDirty();
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virtual void DiscardEdits();
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// writing text inserts it at the current position, appending always
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// inserts it at the end
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virtual void WriteText(const wxString& text);
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virtual void AppendText(const wxString& text);
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// translate between the position (which is just an index in the text ctrl
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// considering all its contents as a single strings) and (x, y) coordinates
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// which represent (logical, i.e. unwrapped) column and line.
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virtual wxTextPos XYToPosition(wxTextCoord x, wxTextCoord y) const;
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virtual bool PositionToXY(wxTextPos pos,
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wxTextCoord *x, wxTextCoord *y) const;
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// wxUniv-specific: find a screen position (in client coordinates) of the
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// given text position or of the caret
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bool PositionToLogicalXY(wxTextPos pos, wxCoord *x, wxCoord *y) const;
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bool PositionToDeviceXY(wxTextPos pos, wxCoord *x, wxCoord *y) const;
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wxPoint GetCaretPosition() const;
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virtual void ShowPosition(wxTextPos pos);
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// Clipboard operations
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virtual void Copy();
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virtual void Cut();
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virtual void Paste();
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// Undo/redo
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virtual void Undo();
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virtual void Redo();
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virtual bool CanUndo() const;
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virtual bool CanRedo() const;
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// Insertion point
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virtual void SetInsertionPoint(wxTextPos pos);
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virtual void SetInsertionPointEnd();
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virtual wxTextPos GetInsertionPoint() const;
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virtual wxTextPos GetLastPosition() const;
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virtual void SetSelection(wxTextPos from, wxTextPos to);
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virtual void SetEditable(bool editable);
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// wxUniv-specific methods
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// -----------------------
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// caret stuff
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virtual void ShowCaret(bool show = true);
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void HideCaret() { ShowCaret(false); }
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void CreateCaret(); // for the current font size
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// helpers for cursor movement
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wxTextPos GetWordStart() const;
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wxTextPos GetWordEnd() const;
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// selection helpers
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bool HasSelection() const
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{ return m_selStart != -1 && m_selEnd > m_selStart; }
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void ClearSelection();
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void RemoveSelection();
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wxString GetSelectionText() const;
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virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
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virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
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wxTextCoord *col,
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wxTextCoord *row) const;
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// find the character at this position in the given line, return value as
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// for HitTest()
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//
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// NB: x is the logical coord (client and unscrolled)
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wxTextCtrlHitTestResult HitTestLine(const wxString& line,
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wxCoord x,
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wxTextCoord *colOut) const;
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// bring the given position into view
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void ShowHorzPosition(wxCoord pos);
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// scroll the window horizontally so that the first character shown is in
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// position pos
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void ScrollText(wxTextCoord col);
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// adjust the DC for horz text control scrolling too
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virtual void DoPrepareDC(wxDC& dc);
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// implementation only from now on
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// -------------------------------
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// override this to take into account our scrollbar-less scrolling
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virtual void CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const;
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virtual void CalcScrolledPosition(int x, int y, int *xx, int *yy) const;
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// perform an action
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virtual bool PerformAction(const wxControlAction& action,
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long numArg = -1,
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const wxString& strArg = wxEmptyString);
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static wxInputHandler *GetStdInputHandler(wxInputHandler *handlerDef);
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virtual wxInputHandler *DoGetStdInputHandler(wxInputHandler *handlerDef)
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{
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return GetStdInputHandler(handlerDef);
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}
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// override these methods to handle the caret
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virtual bool SetFont(const wxFont &font);
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virtual bool Enable(bool enable = true);
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// more readable flag testing methods
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bool IsPassword() const { return HasFlag(wxTE_PASSWORD); }
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bool WrapLines() const { return m_wrapLines; }
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// only for wxStdTextCtrlInputHandler
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void RefreshSelection();
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// override wxScrollHelper method to prevent (auto)scrolling beyond the end
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// of line
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virtual bool SendAutoScrollEvents(wxScrollWinEvent& event) const;
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// idle processing
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virtual void OnInternalIdle();
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protected:
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// ensure we have correct default border
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virtual wxBorder GetDefaultBorder() const { return wxBORDER_SUNKEN; }
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// override base class methods
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virtual void DoDrawBorder(wxDC& dc, const wxRect& rect);
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virtual void DoDraw(wxControlRenderer *renderer);
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// calc the size from the text extent
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virtual wxSize DoGetBestClientSize() const;
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// implements Set/ChangeValue()
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virtual void DoSetValue(const wxString& value, int flags = 0);
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// common part of all ctors
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void Init();
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// drawing
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// -------
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// draw the text in the given rectangle
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void DoDrawTextInRect(wxDC& dc, const wxRect& rectUpdate);
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// draw the line wrap marks in this rect
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void DoDrawLineWrapMarks(wxDC& dc, const wxRect& rectUpdate);
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// line/row geometry calculations
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// ------------------------------
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// get the extent (width) of the text
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wxCoord GetTextWidth(const wxString& text) const;
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// get the logical text width (accounting for scrolling)
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wxCoord GetTotalWidth() const;
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// get total number of rows (different from number of lines if the lines
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// can be wrapped)
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wxTextCoord GetRowCount() const;
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// find the number of rows in this line (only if WrapLines())
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wxTextCoord GetRowsPerLine(wxTextCoord line) const;
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// get the starting row of the given line
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wxTextCoord GetFirstRowOfLine(wxTextCoord line) const;
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// get the row following this line
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wxTextCoord GetRowAfterLine(wxTextCoord line) const;
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// refresh functions
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// -----------------
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// the text area is the part of the window in which the text can be
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// displayed, i.e. part of it inside the margins and the real text area is
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// the area in which the text *is* currently displayed: for example, in the
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// multiline control case the text area can have extra space at the bottom
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// which is not tall enough for another line and which is then not included
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// into the real text area
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wxRect GetRealTextArea() const;
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// refresh the text in the given (in logical coords) rect
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void RefreshTextRect(const wxRect& rect, bool textOnly = true);
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// refresh the line wrap marks for the given range of lines (inclusive)
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void RefreshLineWrapMarks(wxTextCoord rowFirst, wxTextCoord rowLast);
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// refresh the text in the given range (in logical coords) of this line, if
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// width is 0, refresh to the end of line
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void RefreshPixelRange(wxTextCoord line, wxCoord start, wxCoord width);
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// refresh the text in the given range (in text coords) in this line
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void RefreshColRange(wxTextCoord line, wxTextPos start, size_t count);
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// refresh the text from in the given line range (inclusive)
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void RefreshLineRange(wxTextCoord lineFirst, wxTextCoord lineLast);
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// refresh the text in the given range which can span multiple lines
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// (this method accepts arguments in any order)
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void RefreshTextRange(wxTextPos start, wxTextPos end);
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// get the text to show: either the text itself or the text replaced with
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// starts for wxTE_PASSWORD control
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wxString GetTextToShow(const wxString& text) const;
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// find the row in this line where the given position (counted from the
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// start of line) is
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wxTextCoord GetRowInLine(wxTextCoord line,
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wxTextCoord col,
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wxTextCoord *colRowStart = NULL) const;
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// find the number of characters of a line before it wraps
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// (and optionally also the real width of the line)
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size_t GetPartOfWrappedLine(const wxChar* text,
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wxCoord *widthReal = NULL) const;
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// get the start and end of the selection for this line: if the line is
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// outside the selection, both will be -1 and false will be returned
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bool GetSelectedPartOfLine(wxTextCoord line,
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wxTextPos *start, wxTextPos *end) const;
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// update the text rect: the zone inside our client rect (its coords are
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// client coords) which contains the text
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void UpdateTextRect();
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// calculate the last visible position
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void UpdateLastVisible();
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// move caret to the given position unconditionally
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// (SetInsertionPoint() does nothing if the position didn't change)
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void DoSetInsertionPoint(wxTextPos pos);
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// move caret to the new position without updating the display (for
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// internal use only)
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void MoveInsertionPoint(wxTextPos pos);
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// set the caret to its initial (default) position
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void InitInsertionPoint();
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// get the width of the longest line in pixels
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wxCoord GetMaxWidth() const;
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// force recalculation of the max line width
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void RecalcMaxWidth();
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// update the max width after the given line was modified
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void UpdateMaxWidth(wxTextCoord line);
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// hit testing
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// -----------
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// HitTest2() is more efficient than 2 consecutive HitTest()s with the same
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// line (i.e. y) and it also returns the offset of the starting position in
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// pixels
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//
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// as the last hack, this function accepts either logical or device (by
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// default) coords depending on devCoords flag
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wxTextCtrlHitTestResult HitTest2(wxCoord y,
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wxCoord x1,
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wxCoord x2,
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wxTextCoord *row,
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wxTextCoord *colStart,
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wxTextCoord *colEnd,
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wxTextCoord *colRowStart,
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bool devCoords = true) const;
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// HitTest() version which takes the logical text coordinates and not the
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// device ones
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wxTextCtrlHitTestResult HitTestLogical(const wxPoint& pos,
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wxTextCoord *col,
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wxTextCoord *row) const;
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// get the line and the row in this line corresponding to the given row,
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// return true if ok and false if row is out of range
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//
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// NB: this function can only be called for controls which wrap lines
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bool GetLineAndRow(wxTextCoord row,
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wxTextCoord *line,
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wxTextCoord *rowInLine) const;
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// get the height of one line (the same for all lines)
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wxCoord GetLineHeight() const
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{
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// this one should be already precalculated
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wxASSERT_MSG( m_heightLine != -1, wxT("should have line height") );
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return m_heightLine;
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}
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// get the average char width
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wxCoord GetAverageWidth() const { return m_widthAvg; }
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// recalc the line height and char width (to call when the font changes)
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void RecalcFontMetrics();
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||||
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// vertical scrolling helpers
|
||||
// --------------------------
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||||
|
||||
// all these functions are for multi line controls only
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||||
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// get the number of visible lines
|
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size_t GetLinesPerPage() const;
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|
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// return the position above the cursor or INVALID_POS_VALUE
|
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wxTextPos GetPositionAbove();
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// return the position below the cursor or INVALID_POS_VALUE
|
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wxTextPos GetPositionBelow();
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// event handlers
|
||||
// --------------
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||||
void OnChar(wxKeyEvent& event);
|
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void OnSize(wxSizeEvent& event);
|
||||
|
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// return the struct containing control-type dependent data
|
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struct wxTextSingleLineData& SData() { return *m_data.sdata; }
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struct wxTextMultiLineData& MData() { return *m_data.mdata; }
|
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struct wxTextWrappedData& WData() { return *m_data.wdata; }
|
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const wxTextSingleLineData& SData() const { return *m_data.sdata; }
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const wxTextMultiLineData& MData() const { return *m_data.mdata; }
|
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const wxTextWrappedData& WData() const { return *m_data.wdata; }
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// clipboard operations (unlike the versions without Do prefix, they have a
|
||||
// return code)
|
||||
bool DoCut();
|
||||
bool DoPaste();
|
||||
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private:
|
||||
// all these methods are for multiline text controls only
|
||||
|
||||
// update the scrollbars (only called from OnIdle)
|
||||
void UpdateScrollbars();
|
||||
|
||||
// get read only access to the lines of multiline control
|
||||
inline const wxArrayString& GetLines() const;
|
||||
inline size_t GetLineCount() const;
|
||||
|
||||
// replace a line (returns true if the number of rows in thel ine changed)
|
||||
bool ReplaceLine(wxTextCoord line, const wxString& text);
|
||||
|
||||
// remove a line
|
||||
void RemoveLine(wxTextCoord line);
|
||||
|
||||
// insert a line at this position
|
||||
void InsertLine(wxTextCoord line, const wxString& text);
|
||||
|
||||
// calculate geometry of this line
|
||||
void LayoutLine(wxTextCoord line, class wxWrappedLineData& lineData) const;
|
||||
|
||||
// calculate geometry of all lines until the given one
|
||||
void LayoutLines(wxTextCoord lineLast) const;
|
||||
|
||||
// the initially specified control size
|
||||
wxSize m_sizeInitial;
|
||||
|
||||
// the global control text
|
||||
wxString m_value;
|
||||
|
||||
// current position
|
||||
wxTextPos m_curPos;
|
||||
wxTextCoord m_curCol,
|
||||
m_curRow;
|
||||
|
||||
// last position (only used by GetLastPosition())
|
||||
wxTextPos m_posLast;
|
||||
|
||||
// selection
|
||||
wxTextPos m_selAnchor,
|
||||
m_selStart,
|
||||
m_selEnd;
|
||||
|
||||
// flags
|
||||
bool m_isModified:1,
|
||||
m_isEditable:1,
|
||||
m_hasCaret:1,
|
||||
m_wrapLines:1; // can't be changed after creation
|
||||
|
||||
// the rectangle (in client coordinates) to draw text inside
|
||||
wxRect m_rectText;
|
||||
|
||||
// the height of one line (cached value of GetCharHeight)
|
||||
wxCoord m_heightLine;
|
||||
|
||||
// and the average char width (cached value of GetCharWidth)
|
||||
wxCoord m_widthAvg;
|
||||
|
||||
// we have some data which depends on the kind of control (single or multi
|
||||
// line)
|
||||
union
|
||||
{
|
||||
wxTextSingleLineData *sdata;
|
||||
wxTextMultiLineData *mdata;
|
||||
wxTextWrappedData *wdata;
|
||||
void *data;
|
||||
} m_data;
|
||||
|
||||
// the object to which we delegate our undo/redo implementation
|
||||
wxTextCtrlCommandProcessor *m_cmdProcessor;
|
||||
|
||||
DECLARE_EVENT_TABLE()
|
||||
DECLARE_DYNAMIC_CLASS(wxTextCtrl)
|
||||
|
||||
friend class wxWrappedLineData;
|
||||
};
|
||||
|
||||
#endif // _WX_UNIV_TEXTCTRL_H_
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue