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wxWidgets/include/wx/textctrl.h
Julian Smart 655719367a Use old licence name 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27408 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2004-05-23 20:53:33 +00:00

519 lines
19 KiB
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///////////////////////////////////////////////////////////////////////////////
// Name: textctrl.h
// Purpose: wxTextCtrlBase class - the interface of wxTextCtrl
// Author: Vadim Zeitlin
// Modified by:
// Created: 13.07.99
// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_TEXTCTRL_H_BASE_
#define _WX_TEXTCTRL_H_BASE_
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "textctrlbase.h"
#endif
#include "wx/defs.h"
#if wxUSE_TEXTCTRL
#include "wx/control.h" // the base class
#include "wx/dynarray.h" // wxArrayInt
#include "wx/gdicmn.h" // wxPoint
// 16-bit Borland 4.0 doesn't seem to allow multiple inheritance with wxWindow
// and streambuf: it complains about deriving a huge class from the huge class
// streambuf. !! Also, can't use streambuf if making or using a DLL :-(
#if (defined(__BORLANDC__)) || defined(__MWERKS__) || \
(defined(__WINDOWS__) && (defined(WXUSINGDLL) || defined(WXMAKINGDLL)))
#define NO_TEXT_WINDOW_STREAM
#endif
#ifndef NO_TEXT_WINDOW_STREAM
#if wxUSE_STD_IOSTREAM
#include "wx/ioswrap.h" // derivation: we need the full decls.
#else // !wxUSE_STD_IOSTREAM
// can't compile this feature in if we don't use streams at all
#define NO_TEXT_WINDOW_STREAM
#endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
#endif
class WXDLLEXPORT wxTextCtrl;
class WXDLLEXPORT wxTextCtrlBase;
// ----------------------------------------------------------------------------
// wxTextCtrl types
// ----------------------------------------------------------------------------
// wxTextPos is the position in the text
typedef long wxTextPos;
// wxTextCoord is the line or row number (which should have been unsigned but
// is long for backwards compatibility)
typedef long wxTextCoord;
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
WXDLLEXPORT_DATA(extern const wxChar*) wxTextCtrlNameStr;
// ----------------------------------------------------------------------------
// wxTextCtrl style flags
// ----------------------------------------------------------------------------
// the flag bits 0x0001, and 0x0004 are free but should be used only for the
// things which don't make sense for a text control used by wxTextEntryDialog
// because they would otherwise conflict with wxOK, wxCANCEL, wxCENTRE
#define wxTE_NO_VSCROLL 0x0002
#define wxTE_AUTO_SCROLL 0x0008
#define wxTE_READONLY 0x0010
#define wxTE_MULTILINE 0x0020
#define wxTE_PROCESS_TAB 0x0040
// alignment flags
#define wxTE_LEFT 0x0000 // 0x0000
#define wxTE_CENTER wxALIGN_CENTER_HORIZONTAL // 0x0100
#define wxTE_RIGHT wxALIGN_RIGHT // 0x0200
#define wxTE_CENTRE wxTE_CENTER
// this style means to use RICHEDIT control and does something only under wxMSW
// and Win32 and is silently ignored under all other platforms
#define wxTE_RICH 0x0080
#define wxTE_PROCESS_ENTER 0x0400
#define wxTE_PASSWORD 0x0800
// automatically detect the URLs and generate the events when mouse is
// moved/clicked over an URL
//
// this is for Win32 richedit controls only so far
#define wxTE_AUTO_URL 0x1000
// by default, the Windows text control doesn't show the selection when it
// doesn't have focus - use this style to force it to always show it
#define wxTE_NOHIDESEL 0x2000
// use wxHSCROLL to not wrap text at all, wxTE_LINEWRAP to wrap it at any
// position and wxTE_WORDWRAP to wrap at words boundary
#define wxTE_DONTWRAP wxHSCROLL
#define wxTE_LINEWRAP 0x4000
#define wxTE_WORDWRAP 0x0000 // it's just == !wxHSCROLL
// force using RichEdit version 2.0 or 3.0 instead of 1.0 (default) for
// wxTE_RICH controls - can be used together with or instead of wxTE_RICH
#define wxTE_RICH2 0x8000
// ----------------------------------------------------------------------------
// wxTextCtrl::HitTest return values
// ----------------------------------------------------------------------------
// the point asked is ...
enum wxTextCtrlHitTestResult
{
wxTE_HT_UNKNOWN = -2, // this means HitTest() is simply not implemented
wxTE_HT_BEFORE, // either to the left or upper
wxTE_HT_ON_TEXT, // directly on
wxTE_HT_BELOW, // below [the last line]
wxTE_HT_BEYOND // after [the end of line]
};
// ... the character returned
// ----------------------------------------------------------------------------
// Types for wxTextAttr
// ----------------------------------------------------------------------------
// Alignment
enum wxTextAttrAlignment
{
wxTEXT_ALIGNMENT_DEFAULT,
wxTEXT_ALIGNMENT_LEFT,
wxTEXT_ALIGNMENT_CENTRE,
wxTEXT_ALIGNMENT_CENTER = wxTEXT_ALIGNMENT_CENTRE,
wxTEXT_ALIGNMENT_RIGHT,
wxTEXT_ALIGNMENT_JUSTIFIED
};
// Flags to indicate which attributes are being applied
#define wxTEXT_ATTR_TEXT_COLOUR 0x0001
#define wxTEXT_ATTR_BACKGROUND_COLOUR 0x0002
#define wxTEXT_ATTR_FONT_FACE 0x0004
#define wxTEXT_ATTR_FONT_SIZE 0x0008
#define wxTEXT_ATTR_FONT_WEIGHT 0x0010
#define wxTEXT_ATTR_FONT_ITALIC 0x0020
#define wxTEXT_ATTR_FONT_UNDERLINE 0x0040
#define wxTEXT_ATTR_FONT \
wxTEXT_ATTR_FONT_FACE | wxTEXT_ATTR_FONT_SIZE | wxTEXT_ATTR_FONT_WEIGHT | wxTEXT_ATTR_FONT_ITALIC | wxTEXT_ATTR_FONT_UNDERLINE
#define wxTEXT_ATTR_ALIGNMENT 0x0080
#define wxTEXT_ATTR_LEFT_INDENT 0x0100
#define wxTEXT_ATTR_RIGHT_INDENT 0x0200
#define wxTEXT_ATTR_TABS 0x0400
// ----------------------------------------------------------------------------
// wxTextAttr: a structure containing the visual attributes of a text
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTextAttr
{
public:
// ctors
wxTextAttr() { Init(); }
wxTextAttr(const wxColour& colText,
const wxColour& colBack = wxNullColour,
const wxFont& font = wxNullFont,
wxTextAttrAlignment alignment = wxTEXT_ALIGNMENT_DEFAULT);
// operations
void Init();
// operators
void operator= (const wxTextAttr& attr);
// setters
void SetTextColour(const wxColour& colText) { m_colText = colText; m_flags |= wxTEXT_ATTR_TEXT_COLOUR; }
void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR; }
void SetFont(const wxFont& font, long flags = wxTEXT_ATTR_FONT) { m_font = font; m_flags |= flags; }
void SetAlignment(wxTextAttrAlignment alignment) { m_textAlignment = alignment; m_flags |= wxTEXT_ATTR_ALIGNMENT; }
void SetTabs(const wxArrayInt& tabs) { m_tabs = tabs; m_flags |= wxTEXT_ATTR_TABS; }
void SetLeftIndent(int indent, int subIndent = 0) { m_leftIndent = indent; m_leftSubIndent = subIndent; m_flags |= wxTEXT_ATTR_LEFT_INDENT; }
void SetRightIndent(int indent) { m_rightIndent = indent; m_flags |= wxTEXT_ATTR_RIGHT_INDENT; }
void SetFlags(long flags) { m_flags = flags; }
// accessors
bool HasTextColour() const { return m_colText.Ok() && HasFlag(wxTEXT_ATTR_TEXT_COLOUR) ; }
bool HasBackgroundColour() const { return m_colBack.Ok() && HasFlag(wxTEXT_ATTR_BACKGROUND_COLOUR) ; }
bool HasFont() const { return m_font.Ok() && HasFlag(wxTEXT_ATTR_FONT) ; }
bool HasAlignment() const { return (m_textAlignment != wxTEXT_ALIGNMENT_DEFAULT) || ((m_flags & wxTEXT_ATTR_ALIGNMENT) != 0) ; }
bool HasTabs() const { return (m_flags & wxTEXT_ATTR_TABS) != 0 ; }
bool HasLeftIndent() const { return (m_flags & wxTEXT_ATTR_LEFT_INDENT) != 0 ; }
bool HasRightIndent() const { return (m_flags & wxTEXT_ATTR_RIGHT_INDENT) != 0 ; }
bool HasFlag(long flag) const { return (m_flags & flag) != 0; }
const wxColour& GetTextColour() const { return m_colText; }
const wxColour& GetBackgroundColour() const { return m_colBack; }
const wxFont& GetFont() const { return m_font; }
wxTextAttrAlignment GetAlignment() const { return m_textAlignment; }
const wxArrayInt& GetTabs() const { return m_tabs; }
long GetLeftIndent() const { return m_leftIndent; }
long GetLeftSubIndent() const { return m_leftSubIndent; }
long GetRightIndent() const { return m_rightIndent; }
long GetFlags() const { return m_flags; }
// returns false if we have any attributes set, true otherwise
bool IsDefault() const
{
return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
!HasTabs() && !HasLeftIndent() && !HasRightIndent() ;
}
// return the attribute having the valid font and colours: it uses the
// attributes set in attr and falls back first to attrDefault and then to
// the text control font/colours for those attributes which are not set
static wxTextAttr Combine(const wxTextAttr& attr,
const wxTextAttr& attrDef,
const wxTextCtrlBase *text);
private:
long m_flags;
wxColour m_colText,
m_colBack;
wxFont m_font;
wxTextAttrAlignment m_textAlignment;
wxArrayInt m_tabs; // array of int: tab stops in 1/10 mm
int m_leftIndent; // left indent in 1/10 mm
int m_leftSubIndent; // left indent for all but the first
// line in a paragraph relative to the
// first line, in 1/10 mm
int m_rightIndent; // right indent in 1/10 mm
};
// ----------------------------------------------------------------------------
// wxTextCtrl: a single or multiple line text zone where user can enter and
// edit text
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTextCtrlBase : public wxControl
#ifndef NO_TEXT_WINDOW_STREAM
, public wxSTD streambuf
#endif
{
public:
// creation
// --------
wxTextCtrlBase();
~wxTextCtrlBase();
// accessors
// ---------
virtual wxString GetValue() const = 0;
virtual void SetValue(const wxString& value) = 0;
virtual wxString GetRange(long from, long to) const;
virtual int GetLineLength(long lineNo) const = 0;
virtual wxString GetLineText(long lineNo) const = 0;
virtual int GetNumberOfLines() const = 0;
virtual bool IsModified() const = 0;
virtual bool IsEditable() const = 0;
// more readable flag testing methods
bool IsSingleLine() const { return !(GetWindowStyle() & wxTE_MULTILINE); }
bool IsMultiLine() const { return !IsSingleLine(); }
// If the return values from and to are the same, there is no selection.
virtual void GetSelection(long* from, long* to) const = 0;
virtual wxString GetStringSelection() const;
// operations
// ----------
// editing
virtual void Clear() = 0;
virtual void Replace(long from, long to, const wxString& value) = 0;
virtual void Remove(long from, long to) = 0;
// load/save the controls contents from/to the file
virtual bool LoadFile(const wxString& file);
virtual bool SaveFile(const wxString& file = wxEmptyString);
// sets/clears the dirty flag
virtual void MarkDirty() = 0;
virtual void DiscardEdits() = 0;
// set the max number of characters which may be entered in a single line
// text control
virtual void SetMaxLength(unsigned long WXUNUSED(len)) { }
// writing text inserts it at the current position, appending always
// inserts it at the end
virtual void WriteText(const wxString& text) = 0;
virtual void AppendText(const wxString& text) = 0;
// insert the character which would have resulted from this key event,
// return TRUE if anything has been inserted
virtual bool EmulateKeyPress(const wxKeyEvent& event);
// text control under some platforms supports the text styles: these
// methods allow to apply the given text style to the given selection or to
// set/get the style which will be used for all appended text
virtual bool SetStyle(long start, long end, const wxTextAttr& style);
virtual bool GetStyle(long position, wxTextAttr& style);
virtual bool SetDefaultStyle(const wxTextAttr& style);
virtual const wxTextAttr& GetDefaultStyle() const;
// translate between the position (which is just an index in the text ctrl
// considering all its contents as a single strings) and (x, y) coordinates
// which represent column and line.
virtual long XYToPosition(long x, long y) const = 0;
virtual bool PositionToXY(long pos, long *x, long *y) const = 0;
virtual void ShowPosition(long pos) = 0;
// find the character at position given in pixels
//
// NB: pt is in device coords (not adjusted for the client area origin nor
// scrolling)
virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
wxTextCoord *col,
wxTextCoord *row) const;
// Clipboard operations
virtual void Copy() = 0;
virtual void Cut() = 0;
virtual void Paste() = 0;
virtual bool CanCopy() const;
virtual bool CanCut() const;
virtual bool CanPaste() const;
// Undo/redo
virtual void Undo() = 0;
virtual void Redo() = 0;
virtual bool CanUndo() const = 0;
virtual bool CanRedo() const = 0;
// Insertion point
virtual void SetInsertionPoint(long pos) = 0;
virtual void SetInsertionPointEnd() = 0;
virtual long GetInsertionPoint() const = 0;
virtual long GetLastPosition() const = 0;
virtual void SetSelection(long from, long to) = 0;
virtual void SelectAll();
virtual void SetEditable(bool editable) = 0;
// override streambuf method
#ifndef NO_TEXT_WINDOW_STREAM
int overflow(int i);
#endif // NO_TEXT_WINDOW_STREAM
// stream-like insertion operators: these are always available, whether we
// were, or not, compiled with streambuf support
wxTextCtrl& operator<<(const wxString& s);
wxTextCtrl& operator<<(int i);
wxTextCtrl& operator<<(long i);
wxTextCtrl& operator<<(float f);
wxTextCtrl& operator<<(double d);
wxTextCtrl& operator<<(const wxChar c);
// do the window-specific processing after processing the update event
virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
virtual bool ShouldInheritColours() const { return false; }
protected:
// the name of the last file loaded with LoadFile() which will be used by
// SaveFile() by default
wxString m_filename;
// the text style which will be used for any new text added to the control
wxTextAttr m_defaultStyle;
DECLARE_NO_COPY_CLASS(wxTextCtrlBase)
};
// ----------------------------------------------------------------------------
// include the platform-dependent class definition
// ----------------------------------------------------------------------------
#if defined(__WXX11__)
#include "wx/x11/textctrl.h"
#elif defined(__WXUNIVERSAL__)
#include "wx/univ/textctrl.h"
#elif defined(__WXMSW__)
#include "wx/msw/textctrl.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/textctrl.h"
#elif defined(__WXGTK__)
#include "wx/gtk/textctrl.h"
#elif defined(__WXMAC__)
#include "wx/mac/textctrl.h"
#elif defined(__WXCOCOA__)
#include "wx/cocoa/textctrl.h"
#elif defined(__WXPM__)
#include "wx/os2/textctrl.h"
#endif
// ----------------------------------------------------------------------------
// wxTextCtrl events
// ----------------------------------------------------------------------------
#if !WXWIN_COMPATIBILITY_EVENT_TYPES
BEGIN_DECLARE_EVENT_TYPES()
DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED, 7)
DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER, 8)
DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_URL, 13)
DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_MAXLEN, 14)
END_DECLARE_EVENT_TYPES()
#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
class WXDLLEXPORT wxTextUrlEvent : public wxCommandEvent
{
public:
wxTextUrlEvent(int winid, const wxMouseEvent& evtMouse,
long start, long end)
: wxCommandEvent(wxEVT_COMMAND_TEXT_URL, winid)
, m_evtMouse(evtMouse), m_start(start), m_end(end)
{ }
// get the mouse event which happend over the URL
const wxMouseEvent& GetMouseEvent() const { return m_evtMouse; }
// get the start of the URL
long GetURLStart() const { return m_start; }
// get the end of the URL
long GetURLEnd() const { return m_end; }
protected:
// the corresponding mouse event
wxMouseEvent m_evtMouse;
// the start and end indices of the URL in the text control
long m_start,
m_end;
private:
DECLARE_DYNAMIC_CLASS_NO_COPY(wxTextUrlEvent)
public:
// for wxWin RTTI only, don't use
wxTextUrlEvent() : m_evtMouse(), m_start(0), m_end(0) { }
};
typedef void (wxEvtHandler::*wxTextUrlEventFunction)(wxTextUrlEvent&);
#define EVT_TEXT(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TEXT_UPDATED, id, -1, (wxObjectEventFunction) (wxEventFunction) wxStaticCastEvent( wxCommandEventFunction, & fn ), (wxObject *) NULL ),
#define EVT_TEXT_ENTER(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TEXT_ENTER, id, -1, (wxObjectEventFunction) (wxEventFunction) wxStaticCastEvent( wxCommandEventFunction, & fn ), (wxObject *) NULL ),
#define EVT_TEXT_URL(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TEXT_URL, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) wxStaticCastEvent( wxTextUrlEventFunction, & fn ), (wxObject *) NULL ),
#define EVT_TEXT_MAXLEN(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TEXT_MAXLEN, id, -1, (wxObjectEventFunction) (wxEventFunction) wxStaticCastEvent( wxCommandEventFunction, & fn ), (wxObject *) NULL ),
#ifndef NO_TEXT_WINDOW_STREAM
// ----------------------------------------------------------------------------
// wxStreamToTextRedirector: this class redirects all data sent to the given
// C++ stream to the wxTextCtrl given to its ctor during its lifetime.
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxStreamToTextRedirector
{
private:
void Init(wxTextCtrl *text)
{
m_sbufOld = m_ostr.rdbuf();
m_ostr.rdbuf(text);
}
public:
wxStreamToTextRedirector(wxTextCtrl *text)
: m_ostr(wxSTD cout)
{
Init(text);
}
wxStreamToTextRedirector(wxTextCtrl *text, wxSTD ostream *ostr)
: m_ostr(*ostr)
{
Init(text);
}
~wxStreamToTextRedirector()
{
m_ostr.rdbuf(m_sbufOld);
}
private:
// the stream we're redirecting
wxSTD ostream& m_ostr;
// the old streambuf (before we changed it)
wxSTD streambuf *m_sbufOld;
};
#endif // !NO_TEXT_WINDOW_STREAM
#endif // wxUSE_TEXTCTRL
#endif
// _WX_TEXTCTRL_H_BASE_
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