Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
937013e0fd914d4c42f9f5ec98da665986b93dfa
wxWidgets/src/gtk1/textctrl.cpp
Václav Slavík 937013e0fd 1. added wxEvtHandler::SafelyProcessEvent() and wxWindow::HandleWindowEvent() to correctly handle exceptions in even handlers in wxGTK 
2. use HandleWindowEvent() everywhere as more obvious and convenient shortcut for GetEventHandler()->ProcessEvent(); also for consistency with wxGTK where it's required

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50329 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-11-29 17:00:58 +00:00

1375 lines
36 KiB
C++
Raw Blame History

/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk1/textctrl.cpp
// Purpose:
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling, Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/textctrl.h"
#ifndef WX_PRECOMP
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/utils.h"
#include "wx/panel.h"
#include "wx/settings.h"
#include "wx/math.h"
#endif
#include "wx/strconv.h"
#include "wx/fontutil.h" // for wxNativeFontInfo (GetNativeFontInfo())
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include "wx/gtk1/private.h"
#include <gdk/gdkkeysyms.h>
//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------
extern void wxapp_install_idle_handler();
extern bool g_isIdle;
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern wxCursor g_globalCursor;
extern wxWindowGTK *g_delayedFocus;
// ----------------------------------------------------------------------------
// helpers
// ----------------------------------------------------------------------------
extern "C" {
static void wxGtkTextInsert(GtkWidget *text,
const wxTextAttr& attr,
const char *txt,
size_t len)
{
wxFont tmpFont;
GdkFont *font;
if (attr.HasFont())
{
tmpFont = attr.GetFont();
// FIXME: if this crashes because tmpFont goes out of scope and the GdkFont is
// deleted, then we need to call gdk_font_ref on font.
// This is because attr.GetFont() now returns a temporary font since wxTextAttr
// no longer stores a wxFont object, for efficiency.
font = tmpFont.GetInternalFont();
}
else
font = NULL;
GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
: NULL;
GdkColor *colBg = attr.HasBackgroundColour()
? attr.GetBackgroundColour().GetColor()
: NULL;
gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
}
}
// ----------------------------------------------------------------------------
// "insert_text" for GtkEntry
// ----------------------------------------------------------------------------
extern "C" {
static void
gtk_insert_text_callback(GtkEditable *editable,
const gchar *WXUNUSED(new_text),
gint WXUNUSED(new_text_length),
gint *WXUNUSED(position),
wxTextCtrl *win)
{
if (g_isIdle)
wxapp_install_idle_handler();
// we should only be called if we have a max len limit at all
GtkEntry *entry = GTK_ENTRY (editable);
wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
// check that we don't overflow the max length limit
//
// FIXME: this doesn't work when we paste a string which is going to be
// truncated
if ( entry->text_length == entry->text_max_length )
{
// we don't need to run the base class version at all
gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
// remember that the next changed signal is to be ignored to avoid
// generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
win->IgnoreNextTextUpdate();
// and generate the correct one ourselves
wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
event.SetEventObject(win);
event.SetString(win->GetValue());
win->HandleWindowEvent( event );
}
}
}
//-----------------------------------------------------------------------------
// "changed"
//-----------------------------------------------------------------------------
extern "C" {
static void
gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
{
if ( win->IgnoreTextUpdate() )
return;
if (!win->m_hasVMT) return;
if (g_isIdle)
wxapp_install_idle_handler();
win->SetModified();
win->UpdateFontIfNeeded();
wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
event.SetEventObject( win );
win->HandleWindowEvent( event );
}
}
//-----------------------------------------------------------------------------
// "changed" from vertical scrollbar
//-----------------------------------------------------------------------------
extern "C" {
static void
gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
{
if (!win->m_hasVMT) return;
if (g_isIdle)
wxapp_install_idle_handler();
win->CalculateScrollbar();
}
}
// ----------------------------------------------------------------------------
// redraw callback for multiline text
// ----------------------------------------------------------------------------
// redrawing a GtkText from inside a wxYield() call results in crashes (the
// text sample shows it in its "Add lines" command which shows wxProgressDialog
// which implicitly calls wxYield()) so we override GtkText::draw() and simply
// don't do anything if we're inside wxYield()
extern bool wxIsInsideYield;
extern "C" {
typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
}
static GtkDrawCallback gs_gtk_text_draw = NULL;
extern "C" {
static void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
{
if ( !wxIsInsideYield )
{
wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
_T("infinite recursion in wxgtk_text_draw aborted") );
gs_gtk_text_draw(widget, rect);
}
}
}
//-----------------------------------------------------------------------------
// wxTextCtrl
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
EVT_CHAR(wxTextCtrl::OnChar)
EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
END_EVENT_TABLE()
void wxTextCtrl::Init()
{
m_ignoreNextUpdate =
m_modified = false;
SetUpdateFont(false);
m_text =
m_vScrollbar = (GtkWidget *)NULL;
}
wxTextCtrl::~wxTextCtrl()
{
}
wxTextCtrl::wxTextCtrl( wxWindow *parent,
wxWindowID id,
const wxString &value,
const wxPoint &pos,
const wxSize &size,
long style,
const wxValidator& validator,
const wxString &name )
{
Init();
Create( parent, id, value, pos, size, style, validator, name );
}
bool wxTextCtrl::Create( wxWindow *parent,
wxWindowID id,
const wxString &value,
const wxPoint &pos,
const wxSize &size,
long style,
const wxValidator& validator,
const wxString &name )
{
m_needParent = true;
m_acceptsFocus = true;
if (!PreCreation( parent, pos, size ) ||
!CreateBase( parent, id, pos, size, style, validator, name ))
{
wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
return false;
}
m_vScrollbarVisible = false;
bool multi_line = (style & wxTE_MULTILINE) != 0;
if (multi_line)
{
// create our control ...
m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
// ... and put into the upper left hand corner of the table
bool bHasHScrollbar = false;
m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
(GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
(GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
0, 0);
// always wrap words
gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
// finally, put the vertical scrollbar in the upper right corner
m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
GTK_FILL,
(GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
0, 0);
}
else
{
// a single-line text control: no need for scrollbars
m_widget =
m_text = gtk_entry_new();
}
m_parent->DoAddChild( this );
m_focusWidget = m_text;
PostCreation(size);
if (multi_line)
gtk_widget_show(m_text);
if (multi_line)
{
gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
(GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
// only initialize gs_gtk_text_draw once, starting from the next the
// klass::draw will already be wxgtk_text_draw
if ( !gs_gtk_text_draw )
{
GtkDrawCallback&
draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
gs_gtk_text_draw = draw;
draw = wxgtk_text_draw;
}
}
if (!value.empty())
{
#if !GTK_CHECK_VERSION(1, 2, 0)
// if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
// gtk_editable_insert_text()
gtk_widget_realize(m_text);
#endif // GTK 1.0
gint tmp = 0;
#if wxUSE_UNICODE
wxWX2MBbuf val = value.mbc_str();
gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
#else
gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.length(), &tmp );
#endif
if (multi_line)
{
// Bring editable's cursor uptodate. Bug in GTK.
SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
}
}
if (style & wxTE_PASSWORD)
{
if (!multi_line)
gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
}
if (style & wxTE_READONLY)
{
if (!multi_line)
gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
}
else
{
if (multi_line)
gtk_text_set_editable( GTK_TEXT(m_text), 1 );
}
// We want to be notified about text changes.
gtk_signal_connect( GTK_OBJECT(m_text), "changed",
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
m_cursor = wxCursor( wxCURSOR_IBEAM );
wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
SetDefaultStyle( attrDef );
return true;
}
void wxTextCtrl::CalculateScrollbar()
{
if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
if (adj->upper - adj->page_size < 0.8)
{
if (m_vScrollbarVisible)
{
gtk_widget_hide( m_vScrollbar );
m_vScrollbarVisible = false;
}
}
else
{
if (!m_vScrollbarVisible)
{
gtk_widget_show( m_vScrollbar );
m_vScrollbarVisible = true;
}
}
}
wxString wxTextCtrl::GetValue() const
{
wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
wxString tmp;
if (m_windowStyle & wxTE_MULTILINE)
{
gint len = gtk_text_get_length( GTK_TEXT(m_text) );
char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
tmp = text;
g_free( text );
}
else
{
tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
}
return tmp;
}
void wxTextCtrl::DoSetValue( const wxString &value, int flags )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if ( !(flags & SetValue_SendEvent) )
{
// do not generate events
IgnoreNextTextUpdate();
}
if (m_windowStyle & wxTE_MULTILINE)
{
gint len = gtk_text_get_length( GTK_TEXT(m_text) );
gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
len = 0;
gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.length(), &len );
}
else
{
gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
}
// GRG, Jun/2000: Changed this after a lot of discussion in
// the lists. wxWidgets 2.2 will have a set of flags to
// customize this behaviour.
SetInsertionPoint(0);
m_modified = false;
}
void wxTextCtrl::WriteText( const wxString &text )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if ( text.empty() )
return;
// gtk_text_changed_callback() will set m_modified to true but m_modified
// shouldn't be changed by the program writing to the text control itself,
// so save the old value and restore when we're done
bool oldModified = m_modified;
if ( m_windowStyle & wxTE_MULTILINE )
{
// After cursor movements, gtk_text_get_point() is wrong by one.
gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
// always use m_defaultStyle, even if it is empty as otherwise
// resetting the style and appending some more text wouldn't work: if
// we don't specify the style explicitly, the old style would be used
gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.length());
// we called wxGtkTextInsert with correct font, no need to do anything
// in UpdateFontIfNeeded() any longer
if ( !text.empty() )
{
SetUpdateFont(false);
}
// Bring editable's cursor back uptodate.
SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
}
else // single line
{
// First remove the selection if there is one
gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
// This moves the cursor pos to behind the inserted text.
gint len = GET_EDITABLE_POS(m_text);
gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.length(), &len );
// Bring entry's cursor uptodate.
gtk_entry_set_position( GTK_ENTRY(m_text), len );
}
m_modified = oldModified;
}
void wxTextCtrl::AppendText( const wxString &text )
{
SetInsertionPointEnd();
WriteText( text );
}
wxString wxTextCtrl::GetLineText( long lineNo ) const
{
if (m_windowStyle & wxTE_MULTILINE)
{
gint len = gtk_text_get_length( GTK_TEXT(m_text) );
char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
if (text)
{
wxString buf;
long i;
int currentLine = 0;
for (i = 0; currentLine != lineNo && text[i]; i++ )
if (text[i] == '\n')
currentLine++;
// Now get the text
int j;
for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
buf += text[i];
g_free( text );
return buf;
}
else
{
return wxEmptyString;
}
}
else
{
if (lineNo == 0) return GetValue();
return wxEmptyString;
}
}
void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
{
/* If you implement this, don't forget to update the documentation!
* (file docs/latex/wx/text.tex) */
wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
}
bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
{
if ( m_windowStyle & wxTE_MULTILINE )
{
wxString text = GetValue();
// cast to prevent warning. But pos really should've been unsigned.
if( (unsigned long)pos > text.length() )
return false;
*x=0; // First Col
*y=0; // First Line
const wxChar* stop = text.c_str() + pos;
for ( const wxChar *p = text.c_str(); p < stop; p++ )
{
if (*p == wxT('\n'))
{
(*y)++;
*x=0;
}
else
(*x)++;
}
}
else // single line control
{
if ( pos <= GTK_ENTRY(m_text)->text_length )
{
*y = 0;
*x = pos;
}
else
{
// index out of bounds
return false;
}
}
return true;
}
long wxTextCtrl::XYToPosition(long x, long y ) const
{
if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
long pos=0;
for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
pos += x;
return pos;
}
int wxTextCtrl::GetLineLength(long lineNo) const
{
wxString str = GetLineText (lineNo);
return (int) str.length();
}
int wxTextCtrl::GetNumberOfLines() const
{
if (m_windowStyle & wxTE_MULTILINE)
{
gint len = gtk_text_get_length( GTK_TEXT(m_text) );
char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
if (text)
{
int currentLine = 0;
for (int i = 0; i < len; i++ )
{
if (text[i] == '\n')
currentLine++;
}
g_free( text );
// currentLine is 0 based, add 1 to get number of lines
return currentLine + 1;
}
else
{
return 0;
}
}
else
{
return 1;
}
}
void wxTextCtrl::SetInsertionPoint( long pos )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if ( IsMultiLine() )
{
gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
/* we fake a set_point by inserting and deleting. as the user
isn't supposed to get to know about this non-sense, we
disconnect so that no events are sent to the user program. */
gint tmp = (gint)pos;
gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
gtk_signal_connect( GTK_OBJECT(m_text), "changed",
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
// bring editable's cursor uptodate. Bug in GTK.
SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
}
else
{
gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
// Bring editable's cursor uptodate. Bug in GTK.
SET_EDITABLE_POS(m_text, (guint32)pos);
}
}
void wxTextCtrl::SetInsertionPointEnd()
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if (m_windowStyle & wxTE_MULTILINE)
{
SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
}
else
{
gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
}
}
void wxTextCtrl::SetEditable( bool editable )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if (m_windowStyle & wxTE_MULTILINE)
{
gtk_text_set_editable( GTK_TEXT(m_text), editable );
}
else
{
gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
}
}
void wxTextCtrl::DoEnable( bool enable )
{
if (m_windowStyle & wxTE_MULTILINE)
{
gtk_text_set_editable( GTK_TEXT(m_text), enable );
}
else
{
gtk_widget_set_sensitive( m_text, enable );
}
}
// wxGTK-specific: called recursively by Enable,
// to give widgets an oppprtunity to correct their colours after they
// have been changed by Enable
void wxTextCtrl::OnEnabled( bool WXUNUSED(enable) )
{
if ( IsSingleLine() )
return;
// If we have a custom background colour, we use this colour in both
// disabled and enabled mode, or we end up with a different colour under the
// text.
wxColour oldColour = GetBackgroundColour();
if (oldColour.Ok())
{
// Need to set twice or it'll optimize the useful stuff out
if (oldColour == * wxWHITE)
SetBackgroundColour(*wxBLACK);
else
SetBackgroundColour(*wxWHITE);
SetBackgroundColour(oldColour);
}
}
void wxTextCtrl::MarkDirty()
{
m_modified = true;
}
void wxTextCtrl::DiscardEdits()
{
m_modified = false;
}
// ----------------------------------------------------------------------------
// max text length support
// ----------------------------------------------------------------------------
void wxTextCtrl::IgnoreNextTextUpdate()
{
m_ignoreNextUpdate = true;
}
bool wxTextCtrl::IgnoreTextUpdate()
{
if ( m_ignoreNextUpdate )
{
m_ignoreNextUpdate = false;
return true;
}
return false;
}
void wxTextCtrl::SetMaxLength(unsigned long len)
{
if ( !HasFlag(wxTE_MULTILINE) )
{
gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
// there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
// we had tried to enter more text than allowed by max text length and
// the text wasn't really changed
//
// to detect this and generate TEXT_MAXLEN event instead of
// TEXT_CHANGED one in this case we also catch "insert_text" signal
//
// when max len is set to 0 we disconnect our handler as it means that
// we shouldn't check anything any more
if ( len )
{
gtk_signal_connect( GTK_OBJECT(m_text),
"insert_text",
GTK_SIGNAL_FUNC(gtk_insert_text_callback),
(gpointer)this);
}
else // no checking
{
gtk_signal_disconnect_by_func
(
GTK_OBJECT(m_text),
GTK_SIGNAL_FUNC(gtk_insert_text_callback),
(gpointer)this
);
}
}
}
void wxTextCtrl::SetSelection( long from, long to )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if (from == -1 && to == -1)
{
from = 0;
to = GetValue().length();
}
if ( (m_windowStyle & wxTE_MULTILINE) &&
!GTK_TEXT(m_text)->line_start_cache )
{
// tell the programmer that it didn't work
wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
return;
}
if (m_windowStyle & wxTE_MULTILINE)
{
gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
}
else
{
gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
}
}
void wxTextCtrl::ShowPosition( long pos )
{
if (m_windowStyle & wxTE_MULTILINE)
{
GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
float totalLines = (float) GetNumberOfLines();
long posX;
long posY;
PositionToXY(pos, &posX, &posY);
float posLine = (float) posY;
float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
}
}
long wxTextCtrl::GetInsertionPoint() const
{
wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
return (long) GET_EDITABLE_POS(m_text);
}
wxTextPos wxTextCtrl::GetLastPosition() const
{
wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
int pos = 0;
if (m_windowStyle & wxTE_MULTILINE)
{
pos = gtk_text_get_length( GTK_TEXT(m_text) );
}
else
{
pos = GTK_ENTRY(m_text)->text_length;
}
return (long)pos;
}
void wxTextCtrl::Remove( long from, long to )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
}
void wxTextCtrl::Replace( long from, long to, const wxString &value )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
Remove( from, to );
if (!value.empty())
{
gint pos = (gint)from;
#if wxUSE_UNICODE
wxWX2MBbuf buf = value.mbc_str();
gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
#else
gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.length(), &pos );
#endif // wxUSE_UNICODE
}
}
void wxTextCtrl::Cut()
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
}
void wxTextCtrl::Copy()
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
}
void wxTextCtrl::Paste()
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
}
// Undo/redo
void wxTextCtrl::Undo()
{
// TODO
wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
}
void wxTextCtrl::Redo()
{
// TODO
wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
}
bool wxTextCtrl::CanUndo() const
{
// TODO
//wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
return false;
}
bool wxTextCtrl::CanRedo() const
{
// TODO
//wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
return false;
}
// If the return values from and to are the same, there is no
// selection.
void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
gint from = -1;
gint to = -1;
bool haveSelection = false;
if ( (GTK_EDITABLE(m_text)->has_selection) )
{
haveSelection = true;
from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
}
if (! haveSelection )
from = to = GetInsertionPoint();
if ( from > to )
{
// exchange them to be compatible with wxMSW
gint tmp = from;
from = to;
to = tmp;
}
if ( fromOut )
*fromOut = from;
if ( toOut )
*toOut = to;
}
bool wxTextCtrl::IsEditable() const
{
wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
return GTK_EDITABLE(m_text)->editable;
}
bool wxTextCtrl::IsModified() const
{
return m_modified;
}
void wxTextCtrl::Clear()
{
SetValue( wxEmptyString );
}
void wxTextCtrl::OnChar( wxKeyEvent &key_event )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxTE_PROCESS_ENTER))
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
event.SetEventObject(this);
event.SetString(GetValue());
if (HandleWindowEvent(event)) return;
}
if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
{
// This will invoke the dialog default action, such
// as the clicking the default button.
wxWindow *top_frame = m_parent;
while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
top_frame = top_frame->GetParent();
if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
{
GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
if (window->default_widget)
{
gtk_widget_activate (window->default_widget);
return;
}
}
}
key_event.Skip();
}
GtkWidget* wxTextCtrl::GetConnectWidget()
{
return GTK_WIDGET(m_text);
}
bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
{
if (m_windowStyle & wxTE_MULTILINE)
{
return (window == GTK_TEXT(m_text)->text_area);
}
else
{
return (window == GTK_ENTRY(m_text)->text_area);
}
}
// the font will change for subsequent text insertiongs
bool wxTextCtrl::SetFont( const wxFont &font )
{
wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
if ( !wxTextCtrlBase::SetFont(font) )
{
// font didn't change, nothing to do
return false;
}
if ( m_windowStyle & wxTE_MULTILINE )
{
SetUpdateFont(true);
m_defaultStyle.SetFont(font);
ChangeFontGlobally();
}
return true;
}
void wxTextCtrl::ChangeFontGlobally()
{
// this method is very inefficient and hence should be called as rarely as
// possible!
wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
_T("shouldn't be called for single line controls") );
wxString value = GetValue();
if ( !value.empty() )
{
SetUpdateFont(false);
Clear();
AppendText(value);
}
}
void wxTextCtrl::UpdateFontIfNeeded()
{
if ( m_updateFont )
ChangeFontGlobally();
}
bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
{
if ( !wxControl::SetForegroundColour(colour) )
return false;
// update default fg colour too
m_defaultStyle.SetTextColour(colour);
return true;
}
bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
{
wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
if ( !wxControl::SetBackgroundColour( colour ) )
return false;
if (!m_widget->window)
return false;
if (!m_backgroundColour.Ok())
return false;
if (m_windowStyle & wxTE_MULTILINE)
{
GdkWindow *window = GTK_TEXT(m_text)->text_area;
if (!window)
return false;
m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
gdk_window_set_background( window, m_backgroundColour.GetColor() );
gdk_window_clear( window );
}
// change active background color too
m_defaultStyle.SetBackgroundColour( colour );
return true;
}
bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
{
if ( m_windowStyle & wxTE_MULTILINE )
{
if ( style.IsDefault() )
{
// nothing to do
return true;
}
// VERY dirty way to do that - removes the required text and re-adds it
// with styling (FIXME)
gint l = gtk_text_get_length( GTK_TEXT(m_text) );
wxCHECK_MSG( start >= 0 && end <= l, false,
_T("invalid range in wxTextCtrl::SetStyle") );
gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
wxString tmp(text,*wxConvCurrent);
g_free( text );
gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
gtk_editable_set_position( GTK_EDITABLE(m_text), start );
#if wxUSE_UNICODE
wxWX2MBbuf buf = tmp.mbc_str();
const char *txt = buf;
size_t txtlen = strlen(buf);
#else
const char *txt = tmp;
size_t txtlen = tmp.length();
#endif
// use the attributes from style which are set in it and fall back
// first to the default style and then to the text control default
// colours for the others
wxGtkTextInsert(m_text,
wxTextAttr::Combine(style, m_defaultStyle, this),
txt,
txtlen);
/* does not seem to help under GTK+ 1.2 !!!
gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
SetInsertionPoint( old_pos );
return true;
}
// else single line
// cannot do this for GTK+'s Entry widget
return false;
}
void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
{
gtk_widget_modify_style(m_text, style);
}
void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
{
Cut();
}
void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
{
Copy();
}
void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
{
Paste();
}
void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
{
Undo();
}
void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
{
Redo();
}
void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
{
event.Enable( CanCut() );
}
void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
{
event.Enable( CanCopy() );
}
void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
{
event.Enable( CanPaste() );
}
void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
{
event.Enable( CanUndo() );
}
void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
{
event.Enable( CanRedo() );
}
void wxTextCtrl::OnInternalIdle()
{
wxCursor cursor = m_cursor;
if (g_globalCursor.Ok()) cursor = g_globalCursor;
if (cursor.Ok())
{
GdkWindow *window = (GdkWindow*) NULL;
if (HasFlag(wxTE_MULTILINE))
window = GTK_TEXT(m_text)->text_area;
else
window = GTK_ENTRY(m_text)->text_area;
if (window)
gdk_window_set_cursor( window, cursor.GetCursor() );
if (!g_globalCursor.Ok())
cursor = *wxSTANDARD_CURSOR;
window = m_widget->window;
if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
gdk_window_set_cursor( window, cursor.GetCursor() );
}
if (g_delayedFocus == this)
{
if (GTK_WIDGET_REALIZED(m_widget))
{
gtk_widget_grab_focus( m_widget );
g_delayedFocus = NULL;
}
}
if (wxUpdateUIEvent::CanUpdate(this))
UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
}
wxSize wxTextCtrl::DoGetBestSize() const
{
// FIXME should be different for multi-line controls...
wxSize ret( wxControl::DoGetBestSize() );
wxSize best(80, ret.y);
CacheBestSize(best);
return best;
}
// ----------------------------------------------------------------------------
// freeze/thaw
// ----------------------------------------------------------------------------
void wxTextCtrl::Freeze()
{
if ( HasFlag(wxTE_MULTILINE) )
{
gtk_text_freeze(GTK_TEXT(m_text));
}
}
void wxTextCtrl::Thaw()
{
if ( HasFlag(wxTE_MULTILINE) )
{
GTK_TEXT(m_text)->vadj->value = 0.0;
gtk_text_thaw(GTK_TEXT(m_text));
}
}
// ----------------------------------------------------------------------------
// scrolling
// ----------------------------------------------------------------------------
GtkAdjustment *wxTextCtrl::GetVAdj() const
{
if ( !IsMultiLine() )
return NULL;
return GTK_TEXT(m_text)->vadj;
}
bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
{
float value = adj->value + diff;
if ( value < 0 )
value = 0;
float upper = adj->upper - adj->page_size;
if ( value > upper )
value = upper;
// did we noticeably change the scroll position?
if ( fabs(adj->value - value) < 0.2 )
{
// well, this is what Robert does in wxScrollBar, so it must be good...
return false;
}
adj->value = value;
gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
return true;
}
bool wxTextCtrl::ScrollLines(int lines)
{
GtkAdjustment *adj = GetVAdj();
if ( !adj )
return false;
// this is hardcoded to 10 in GTK+ 1.2 (great idea)
int diff = 10*lines;
return DoScroll(adj, diff);
}
bool wxTextCtrl::ScrollPages(int pages)
{
GtkAdjustment *adj = GetVAdj();
if ( !adj )
return false;
return DoScroll(adj, (int)ceil(pages*adj->page_increment));
}
// static
wxVisualAttributes
wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
}
Reference in New Issue View Git Blame Copy Permalink