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wxWidgets/samples/richedit/wxllist.cpp
Julian Smart bd12a395ba Applied patch [ 795542 ] Unicode fixes in richedit sample 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23499 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-09-11 09:33:17 +00:00

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/*-*- c++ -*-********************************************************
* wxllist: wxLayoutList, a layout engine for text and graphics *
* *
* (C) 1998-2000 by Karsten Ballüder (Ballueder@gmx.net) *
* *
* $Id$
*******************************************************************/
/*
Some docs:
Layout() recalculates the objects, sizes, etc.
Draw() just draws them with the current settings, without
re-layout()ing them again
Each line has its own wxLayoutStyleInfo structure which gets updated
from within Layout(). Thanks to this, we don't need to re-layout all
lines if we want to draw one, but can just use its styleinfo to set
the right font.
*/
#ifdef __GNUG__
# pragma implementation "wxllist.h"
#endif
#include "wx/wxprec.h"
#ifdef __BORLANDC__
# pragma hdrstop
#endif
#include "Mpch.h"
#ifdef M_BASEDIR
# include "Mcommon.h"
# include "gui/wxllist.h"
# include "gui/wxlparser.h"
# define SHOW_SELECTIONS 1
#else
# include "wxllist.h"
# include "wxlparser.h"
# define SHOW_SELECTIONS 1
#endif
#ifndef USE_PCH
#if wxUSE_IOSTREAMH
#include <iostream.h>
#else
#include <iostream>
#endif
# include <wx/dc.h>
# include <wx/dcps.h>
# include <wx/print.h>
# include <wx/log.h>
# include <wx/filefn.h>
#endif
#ifdef WXLAYOUT_USE_CARET
# include <wx/caret.h>
#endif // WXLAYOUT_USE_CARET
#include <ctype.h>
/// This should never really get created
#define WXLLIST_TEMPFILE "__wxllist.tmp"
#ifdef WXLAYOUT_DEBUG
# define TypeString(t) g_aTypeStrings[t]
# define WXLO_DEBUG(x) wxLogDebug x
static const wxChar *g_aTypeStrings[] =
{
_T("invalid"), _T("text"), _T("cmd"), _T("icon")
};
wxString
wxLayoutObject::DebugDump(void) const
{
wxString str;
str.Printf(wxT("%s"), g_aTypeStrings[GetType()]);
return str;
}
#else
# define TypeString(t) ""
# define WXLO_DEBUG(x)
#endif
// FIXME under MSW, this constant is needed to make the thing properly redraw
// itself - I don't know where the size calculation error is and I can't
// waste time looking for it right now. Search for occurences of
// MSW_CORRECTION to find all the places where I did it.
#ifdef __WXMSW__
static const int MSW_CORRECTION = 10;
#else
static const int MSW_CORRECTION = 0;
#endif
/// Cursors smaller than this disappear in XOR drawing mode
#define WXLO_MINIMUM_CURSOR_WIDTH 4
/// Use this character to estimate a cursor size when none is available.
#define WXLO_CURSORCHAR "E"
/** @name Helper functions */
//@{
/// allows me to compare to wxPoints
bool operator <=(wxPoint const &p1, wxPoint const &p2)
{
return p1.y < p2.y || (p1.y == p2.y && p1.x <= p2.x);
}
/*
The following STAY HERE until we have a working wxGTK again!!!
*/
#ifndef wxWANTS_CHARS
/// allows me to compare to wxPoints
bool operator ==(wxPoint const &p1, wxPoint const &p2)
{
return p1.x == p2.x && p1.y == p2.y;
}
/// allows me to compare to wxPoints
bool operator !=(wxPoint const &p1, wxPoint const &p2)
{
return p1.x != p2.x || p1.y != p2.y;
}
wxPoint & operator += (wxPoint &p1, wxPoint const &p2)
{
p1.x += p2.x;
p1.y += p2.y;
return p1;
}
#endif // old wxGTK
/// allows me to compare to wxPoints
bool operator>(wxPoint const &p1, wxPoint const &p2)
{
return !(p1 <= p2);
}
/// grows a wxRect so that it includes the given point
static
void GrowRect(wxRect &r, CoordType x, CoordType y)
{
if(r.x > x)
r.x = x;
else if(r.x + r.width < x)
r.width = x - r.x;
if(r.y > y)
r.y = y;
else if(r.y + r.height < y)
r.height = y - r.y;
}
#if 0
// unused
/// returns true if the point is in the rectangle
static
bool Contains(const wxRect &r, const wxPoint &p)
{
return r.x <= p.x && r.y <= p.y && (r.x+r.width) >= p.x && (r.y + r.height) >= p.y;
}
#endif
//@}
static
void ReadString(wxString &to, wxString &from)
{
to = wxT("");
const wxChar *cptr = from.c_str();
while(*cptr && *cptr != wxT('\n'))
{
to += cptr;
cptr++;
}
if(*cptr) cptr++;
from = cptr;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
wxLayoutObject
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* static */
wxLayoutObject *
wxLayoutObject::Read(wxString &istr)
{
wxString tmp;
ReadString(tmp, istr);
long l = WXLO_TYPE_INVALID;
tmp.ToLong(&l);
int type = (int) l;
switch(type)
{
case WXLO_TYPE_TEXT:
return wxLayoutObjectText::Read(istr);
case WXLO_TYPE_CMD:
return wxLayoutObjectCmd::Read(istr);
case WXLO_TYPE_ICON:
return wxLayoutObjectIcon::Read(istr);
default:
return NULL;
}
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
wxLayoutObjectText
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutObjectText::wxLayoutObjectText(const wxString &txt)
{
m_Text = txt;
m_Width = 0;
m_Height = 0;
m_Top = 0;
m_Bottom = 0;
}
wxLayoutObject *
wxLayoutObjectText::Copy(void)
{
wxLayoutObjectText *obj = new wxLayoutObjectText(m_Text);
obj->m_Width = m_Width;
obj->m_Height = m_Height;
obj->m_Top = m_Top;
obj->m_Bottom = m_Bottom;
obj->SetUserData(m_UserData);
return obj;
}
void
wxLayoutObjectText::Write(wxString &ostr)
{
ostr << (int) WXLO_TYPE_TEXT << '\n'
<< m_Text << '\n';
}
/* static */
wxLayoutObjectText *
wxLayoutObjectText::Read(wxString &istr)
{
wxString text;
ReadString(text, istr);
return new wxLayoutObjectText(text);
}
wxPoint
wxLayoutObjectText::GetSize(CoordType *top, CoordType *bottom) const
{
*top = m_Top; *bottom = m_Bottom;
return wxPoint(m_Width, m_Height);
}
void
wxLayoutObjectText::Draw(wxDC &dc, wxPoint const &coords,
wxLayoutList *wxllist,
CoordType begin, CoordType end)
{
if( end <= 0 )
{
// draw the whole object normally
dc.DrawText(m_Text, coords.x, coords.y-m_Top);
}
else
{
// highlight the bit between begin and len
CoordType
xpos = coords.x,
ypos = coords.y-m_Top;
long width, height, descent;
if(begin < 0) begin = 0;
if( end > (signed)m_Text.Length() )
end = m_Text.Length();
wxString str = m_Text.Mid(0, begin);
dc.DrawText(str, xpos, ypos);
dc.GetTextExtent(str, &width, &height, &descent);
xpos += width;
wxllist->StartHighlighting(dc);
str = m_Text.Mid(begin, end-begin);
dc.DrawText(str, xpos, ypos);
dc.GetTextExtent(str, &width, &height, &descent);
xpos += width;
wxllist->EndHighlighting(dc);
str = m_Text.Mid(end, m_Text.Length()-end);
dc.DrawText(str, xpos, ypos);
}
}
CoordType
wxLayoutObjectText::GetOffsetScreen(wxDC &dc, CoordType xpos) const
{
CoordType
offs = 1,
maxlen = m_Text.Length();
long
width = 0,
height, descent = 0l;
if(xpos == 0) return 0; // easy
while(width < xpos && offs < maxlen)
{
dc.GetTextExtent(m_Text.substr(0,offs),
&width, &height, &descent);
offs++;
}
/* We have to substract 1 to compensate for the offs++, and another
one because we don't want to position the cursor behind the
object what we clicked on, but before - otherwise it looks
funny. */
return (xpos > 2) ? offs-2 : 0;
}
void
wxLayoutObjectText::Layout(wxDC &dc, class wxLayoutList *WXUNUSED(llist))
{
long descent = 0l;
// now this is done in wxLayoutLine::Layout(), but this code might be
// reenabled later - in principle, it's more efficient
#if 0
CoordType widthOld = m_Width,
heightOld = m_Height;
#endif // 0
#ifdef __WXDEBUG__
CoordType a,b,c,d,e,f;
dc.GetTextExtent(_T("test "), &a, &b, &c);
dc.GetTextExtent(_T("test"), &d, &e, &f);
wxASSERT(a != d);
wxASSERT(b == e);
wxASSERT(c == f);
dc.GetTextExtent(_T(" "), &d, &e, &f);
wxASSERT(a > 0);
#endif
dc.GetTextExtent(m_Text, &m_Width, &m_Height, &descent);
#if 0
if ( widthOld != m_Width || heightOld != m_Height )
{
// as the text length changed, it must be refreshed
wxLayoutLine *line = GetLine();
wxCHECK_RET( line, "wxLayoutObjectText can't refresh itself" );
// as our size changed, we need to repaint the part which was appended
wxPoint position(line->GetPosition());
// this is not the most efficient way (we repaint the whole line), but
// it's not too slow and is *simple*
if ( widthOld < m_Width )
widthOld = m_Width;
if ( heightOld < m_Height )
heightOld = m_Height;
llist->SetUpdateRect(position.x + widthOld + MSW_CORRECTION,
position.y + heightOld + MSW_CORRECTION);
}
#endif // 0
m_Bottom = descent;
m_Top = m_Height - m_Bottom;
}
#ifdef WXLAYOUT_DEBUG
wxString
wxLayoutObjectText::DebugDump(void) const
{
wxString str;
str = wxLayoutObject::DebugDump();
wxString str2;
str2.Printf(wxT(" `%s`"), m_Text.c_str());
return str+str2;
}
#endif
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
wxLayoutObjectIcon
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutObjectIcon::wxLayoutObjectIcon(wxBitmap const &icon)
{
if ( !icon.Ok() )
{
wxFAIL_MSG(wxT("invalid icon"));
m_Icon = NULL;
return;
}
#ifdef __WXMSW__
// FIXME ugly, ugly, ugly - but the only way to avoid slicing
m_Icon = icon.GetHBITMAP() ? new wxBitmap(icon)
: new wxBitmap(wxBitmap((const wxBitmap &)icon));
#else // !MSW
m_Icon = new wxBitmap(icon);
#endif // MSW/!MSW
}
void
wxLayoutObjectIcon::Write(wxString &ostr)
{
/* Exports icon through a temporary file. */
wxString file = wxGetTempFileName(_T("wxloexport"));
ostr << (int) WXLO_TYPE_ICON << '\n'
<< file << '\n';
m_Icon->SaveFile(file, WXLO_BITMAP_FORMAT);
}
/* static */
wxLayoutObjectIcon *
wxLayoutObjectIcon::Read(wxString &istr)
{
wxString file;
ReadString(file, istr);
if(! wxFileExists(file))
return NULL;
wxLayoutObjectIcon *obj = new wxLayoutObjectIcon;
if(!obj->m_Icon->LoadFile(file, WXLO_BITMAP_FORMAT))
{
delete obj;
return NULL;
}
else
return obj;
}
wxLayoutObject *
wxLayoutObjectIcon::Copy(void)
{
wxLayoutObjectIcon *obj = new wxLayoutObjectIcon(new
wxBitmap(*m_Icon));
obj->SetUserData(m_UserData);
return obj;
}
wxLayoutObjectIcon::wxLayoutObjectIcon(wxBitmap *icon)
{
m_Icon = icon;
if(! m_Icon)
m_Icon = new wxBitmap;
}
void
wxLayoutObjectIcon::Draw(wxDC &dc, wxPoint const &coords,
wxLayoutList *WXUNUSED(wxllist),
CoordType WXUNUSED(begin), CoordType WXUNUSED(len) )
{
dc.DrawBitmap(*m_Icon, coords.x, coords.y-m_Icon->GetHeight(),
(m_Icon->GetMask() == NULL) ? FALSE : TRUE);
}
void
wxLayoutObjectIcon::Layout(wxDC & /* dc */, class wxLayoutList * )
{
}
wxPoint
wxLayoutObjectIcon::GetSize(CoordType *top, CoordType *bottom) const
{
*top = m_Icon->GetHeight();
*bottom = 0;
return wxPoint(m_Icon->GetWidth(), m_Icon->GetHeight());
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
wxLayoutObjectCmd
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutStyleInfo::wxLayoutStyleInfo(int ifamily,
int isize,
int istyle,
int iweight,
int iul,
wxColour *fg,
wxColour *bg)
{
family = ifamily;
size = isize;
style = istyle;
weight = iweight;
underline = iul != 0;
m_fg_valid = fg != 0;
m_bg_valid = bg != 0;
m_fg = m_fg_valid ? *fg : *wxBLACK;
m_bg = m_bg_valid ? *bg : *wxWHITE;
}
#define COPY_SI_(what) if(right.what != -1) what = right.what;
wxLayoutStyleInfo &
wxLayoutStyleInfo::operator=(const wxLayoutStyleInfo &right)
{
COPY_SI_(family);
COPY_SI_(style);
COPY_SI_(size);
COPY_SI_(weight);
COPY_SI_(underline);
if(right.m_fg_valid) m_fg = right.m_fg;
if(right.m_bg_valid) m_bg = right.m_bg;
return *this;
}
wxLayoutObjectCmd::wxLayoutObjectCmd(int family, int size, int style, int
weight, int underline,
wxColour *fg, wxColour *bg)
{
m_StyleInfo = new wxLayoutStyleInfo(family, size,style,weight,underline,fg,bg);
}
wxLayoutObjectCmd::wxLayoutObjectCmd(const wxLayoutStyleInfo &si)
{
m_StyleInfo = new wxLayoutStyleInfo;
*m_StyleInfo = si;
}
wxLayoutObject *
wxLayoutObjectCmd::Copy(void)
{
wxLayoutObjectCmd *obj = new wxLayoutObjectCmd(
m_StyleInfo->family,
m_StyleInfo->size,
m_StyleInfo->style,
m_StyleInfo->weight,
m_StyleInfo->underline,
m_StyleInfo->m_fg_valid ?
&m_StyleInfo->m_fg : NULL,
m_StyleInfo->m_bg_valid ?
&m_StyleInfo->m_bg : NULL);
obj->SetUserData(m_UserData);
return obj;
}
void
wxLayoutObjectCmd::Write(wxString &ostr)
{
ostr << (int) WXLO_TYPE_CMD << '\n'
<< (int) m_StyleInfo->family << '\n'
<< (int) m_StyleInfo->size << '\n'
<< (int) m_StyleInfo->style << '\n'
<< (int) m_StyleInfo->weight << '\n'
<< (int) m_StyleInfo->underline << '\n'
<< (int) m_StyleInfo->m_fg_valid << '\n'
<< (int) m_StyleInfo->m_bg_valid << '\n';
if(m_StyleInfo->m_fg_valid)
{
ostr << (int) m_StyleInfo->m_fg.Red() << '\n'
<< (int) m_StyleInfo->m_fg.Green() << '\n'
<< (int) m_StyleInfo->m_fg.Blue() << '\n';
}
if(m_StyleInfo->m_bg_valid)
{
ostr << (int) m_StyleInfo->m_bg.Red() << '\n'
<< (int) m_StyleInfo->m_bg.Green() << '\n'
<< (int) m_StyleInfo->m_bg.Blue() << '\n';
}
}
/* static */
wxLayoutObjectCmd *
wxLayoutObjectCmd::Read(wxString &istr)
{
wxLayoutObjectCmd *obj = new wxLayoutObjectCmd;
long l = 0;
wxString tmp;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->family = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->size = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->style = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->weight = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->underline = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->m_fg_valid = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
obj->m_StyleInfo->m_bg_valid = (int) l;
if(obj->m_StyleInfo->m_fg_valid)
{
int red, green, blue;
ReadString(tmp, istr);
tmp.ToLong(&l);
red = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
green = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
blue = (int) l;
obj->m_StyleInfo->m_fg = wxColour(red, green, blue);
}
if(obj->m_StyleInfo->m_bg_valid)
{
int red, green, blue;
ReadString(tmp, istr);
tmp.ToLong(&l);
red = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
green = (int) l;
ReadString(tmp, istr);
tmp.ToLong(&l);
blue = (int) l;
obj->m_StyleInfo->m_bg = wxColour(red, green, blue);
}
return obj;
}
wxLayoutObjectCmd::~wxLayoutObjectCmd()
{
delete m_StyleInfo;
}
wxLayoutStyleInfo *
wxLayoutObjectCmd::GetStyle(void) const
{
return m_StyleInfo;
}
void
wxLayoutObjectCmd::Draw(wxDC &dc, wxPoint const & WXUNUSED(coords),
wxLayoutList *wxllist,
CoordType WXUNUSED(begin), CoordType WXUNUSED(len))
{
wxASSERT(m_StyleInfo);
wxllist->ApplyStyle(*m_StyleInfo, dc);
}
void
wxLayoutObjectCmd::Layout(wxDC &dc, class wxLayoutList * llist)
{
// this get called, so that recalculation uses right font sizes
Draw(dc, wxPoint(0,0), llist);
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
The wxLayoutLine object
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutLine::wxLayoutLine(wxLayoutLine *prev, wxLayoutList *llist)
{
m_Width = m_Height = 0;
m_Length = 0;
m_updateLeft = -1;
m_Previous = prev;
m_Next = NULL;
MarkDirty(0);
m_LineNumber = 0;
RecalculatePosition(llist);
MarkDirty();
if(m_Previous)
{
m_LineNumber = m_Previous->GetLineNumber() + 1;
m_Next = m_Previous->GetNextLine();
m_Previous->m_Next = this;
}
if(m_Next)
{
m_Next->m_Previous = this;
m_Next->ReNumber();
}
m_StyleInfo = llist->GetDefaultStyleInfo();
llist->IncNumLines();
}
wxLayoutLine::~wxLayoutLine()
{
// kbList cleans itself
}
wxPoint
wxLayoutLine::RecalculatePosition(wxLayoutList *llist)
{
wxASSERT(m_Previous || GetLineNumber() == 0);
wxPoint posOld(m_Position);
if(m_Previous)
{
m_Position = m_Previous->GetPosition();
m_Position.y += m_Previous->GetHeight();
}
else
m_Position = wxPoint(0,0);
if ( m_Position != posOld )
{
// the whole line moved and must be repainted
llist->SetUpdateRect(m_Position);
llist->SetUpdateRect(m_Position.x + GetWidth() + MSW_CORRECTION,
m_Position.y + GetHeight() + MSW_CORRECTION);
llist->SetUpdateRect(posOld);
llist->SetUpdateRect(posOld.x + GetWidth() + MSW_CORRECTION,
posOld.y + GetHeight() + MSW_CORRECTION);
}
return m_Position;
}
wxLayoutObjectList::iterator
wxLayoutLine::FindObject(CoordType xpos, CoordType *offset) const
{
wxASSERT(xpos >= 0);
wxASSERT(offset);
wxLayoutObjectList::iterator
i,
found = NULLIT;
CoordType x = 0, len;
/* We search through the objects. As we don't like returning the
object that the cursor is behind, we just remember such an
object in "found" so we can return it if there is really no
further object following it. */
for(i = m_ObjectList.begin(); i != NULLIT; i++)
{
len = (**i).GetLength();
if( x <= xpos && xpos <= x + len )
{
*offset = xpos-x;
if(xpos == x + len) // is there another object behind?
found = i;
else // we are really inside this object
return i;
}
x += (**i).GetLength();
}
return found; // ==NULL if really none found
}
wxLayoutObjectList::iterator
wxLayoutLine::FindObjectScreen(wxDC &dc, wxLayoutList *llist,
CoordType xpos, CoordType *cxpos,
bool *found) const
{
wxASSERT(cxpos);
llist->ApplyStyle(GetStyleInfo(), dc);
wxLayoutObjectList::iterator i;
CoordType x = 0, cx = 0, width;
for(i = m_ObjectList.begin(); i != NULLIT; i++)
{
wxLayoutObject *obj = *i;
if ( obj->GetType() == WXLO_TYPE_CMD )
{
// this will set the correct font for the objects which follow
obj->Layout(dc, llist);
}
width = obj->GetWidth();
if( x <= xpos && xpos <= x + width )
{
*cxpos = cx + obj->GetOffsetScreen(dc, xpos-x);
if ( found )
*found = true;
return i;
}
x += obj->GetWidth();
cx += obj->GetLength();
}
// behind last object:
*cxpos = cx;
if (found)
*found = false;
return m_ObjectList.tail();
}
/** Finds text in this line.
@param needle the text to find
@param xpos the position where to start the search
@return the cursoor coord where it was found or -1
*/
CoordType
wxLayoutLine::FindText(const wxString &needle, CoordType xpos) const
{
int
cpos = 0,
relpos = -1;
wxString const *text;
for(wxLOiterator i = m_ObjectList.begin(); i != m_ObjectList.end(); i++)
{
if(cpos >= xpos) // search from here!
{
if((**i).GetType() == WXLO_TYPE_TEXT)
{
text = & ((wxLayoutObjectText*)(*i))->GetText();
relpos = text->Find(needle);
if(relpos >= cpos-xpos) // -1 if not found
{
return cpos+relpos;
}
}
cpos += (**i).GetLength();
}
}
return -1; // not found
}
bool
wxLayoutLine::Insert(CoordType xpos, wxLayoutObject *obj)
{
wxASSERT(xpos >= 0);
wxASSERT(obj != NULL);
MarkDirty(xpos);
CoordType offset;
wxLOiterator i = FindObject(xpos, &offset);
if(i == NULLIT)
{
if(xpos == 0 ) // aha, empty line!
{
m_ObjectList.push_back(obj);
m_Length += obj->GetLength();
return true;
}
else
return false;
}
CoordType len = (**i).GetLength();
if(offset == 0 /*&& i != m_ObjectList.begin()*/) // why?
{ // insert before this object
m_ObjectList.insert(i,obj);
m_Length += obj->GetLength();
return true;
}
if(offset == len )
{
if( i == m_ObjectList.tail()) // last object?
m_ObjectList.push_back(obj);
else
{ // insert after current object
i++;
m_ObjectList.insert(i,obj);
}
m_Length += obj->GetLength();
return true;
}
/* Otherwise we need to split the current object.
Fortunately this can only be a text object. */
wxASSERT((**i).GetType() == WXLO_TYPE_TEXT);
wxString left, right;
wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
left = tobj->GetText().substr(0,offset);
right = tobj->GetText().substr(offset,len-offset);
// current text object gets set to right half
tobj->GetText() = right; // set new text
// before it we insert the new object
m_ObjectList.insert(i,obj);
m_Length += obj->GetLength();
// and before that we insert the left half
m_ObjectList.insert(i,new wxLayoutObjectText(left));
return true;
}
bool
wxLayoutLine::Insert(CoordType xpos, const wxString& text)
{
wxASSERT(xpos >= 0);
MarkDirty(xpos);
CoordType offset;
wxLOiterator i = FindObject(xpos, &offset);
if(i != NULLIT && (**i).GetType() == WXLO_TYPE_TEXT)
{
wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
tobj->GetText().insert(offset, text);
m_Length += text.Length();
}
else
{
if ( !Insert(xpos, new wxLayoutObjectText(text)) )
return false;
}
return true;
}
CoordType
wxLayoutLine::Delete(CoordType xpos, CoordType npos)
{
CoordType offset, len;
wxASSERT(xpos >= 0);
wxASSERT(npos >= 0);
MarkDirty(xpos);
wxLOiterator i = FindObject(xpos, &offset);
while(npos > 0)
{
if(i == NULLIT) return npos;
// now delete from that object:
if((**i).GetType() != WXLO_TYPE_TEXT)
{
if(offset != 0) // at end of line after a non-text object
return npos;
// always len == 1:
len = (**i).GetLength();
m_Length -= len;
npos -= len;
m_ObjectList.erase(i);
}
else
{
// tidy up: remove empty text objects
if((**i).GetLength() == 0)
{
m_ObjectList.erase(i);
continue;
}
// Text object:
CoordType max = (**i).GetLength() - offset;
if(npos < max) max = npos;
if(max == 0)
{
if(xpos == GetLength())
return npos;
else
{ // at the end of an object
// move to begin of next object:
i++; offset = 0;
continue; // start over
}
}
npos -= max;
m_Length -= max;
if(offset == 0 && max == (**i).GetLength())
m_ObjectList.erase(i); // remove the whole object
else
((wxLayoutObjectText *)(*i))->GetText().Remove(offset,max);
}
}
return npos;
}
bool
wxLayoutLine::DeleteWord(CoordType xpos)
{
wxASSERT(xpos >= 0);
CoordType offset;
MarkDirty(xpos);
wxLOiterator i = FindObject(xpos, &offset);
for(;;)
{
if(i == NULLIT) return false;
if((**i).GetType() != WXLO_TYPE_TEXT)
{
// This should only happen when at end of line, behind a non-text
// object:
if(offset == (**i).GetLength()) return false;
m_Length -= (**i).GetLength(); // -1
m_ObjectList.erase(i);
return true; // we are done
}
else
{ // text object:
if(offset == (**i).GetLength()) // at end of object
{
i++; offset = 0;
continue;
}
wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
size_t count = 0;
wxString str = tobj->GetText();
str = str.substr(offset,str.Length()-offset);
// Find out how many positions we need to delete:
// 1. eat leading space
while(isspace(str.c_str()[count])) count++;
// 2. eat the word itself:
while(isalnum(str.c_str()[count])) count++;
// now delete it:
wxASSERT(count+offset <= (size_t) (**i).GetLength());
((wxLayoutObjectText *)*i)->GetText().erase(offset,count);
m_Length -= count;
return true;
}
}
#if 0
wxFAIL_MSG(wxT("unreachable"));
#endif
}
wxLayoutLine *
wxLayoutLine::DeleteLine(bool update, wxLayoutList *llist)
{
// maintain linked list integrity
if(m_Next)
m_Next->m_Previous = m_Previous;
if(m_Previous)
m_Previous->m_Next = m_Next;
// get the line numbers right again
if ( update && m_Next)
m_Next->ReNumber();
MarkDirty();
// we can't use m_Next after "delete this", so we must save this pointer
// first
wxLayoutLine *next = m_Next;
delete this;
llist->DecNumLines();
return next;
}
void
wxLayoutLine::Draw(wxDC &dc,
wxLayoutList *llist,
const wxPoint & offset) const
{
wxLayoutObjectList::iterator i;
wxPoint pos = offset;
pos = pos + GetPosition();
pos.y += m_BaseLine;
CoordType xpos = 0; // cursorpos, lenght of line
CoordType from, to;
int highlight = llist->IsSelected(this, &from, &to);
// WXLO_DEBUG(("highlight=%d", highlight ));
if(highlight == 1) // we need to draw the whole line inverted!
llist->StartHighlighting(dc);
else
llist->EndHighlighting(dc);
for(i = m_ObjectList.begin(); i != NULLIT; i++)
{
if(highlight == -1) // partially highlight line
{
// parts of the line need highlighting
xpos+(**i).GetLength();
(**i).Draw(dc, pos, llist, from-xpos, to-xpos);
}
else
(**i).Draw(dc, pos, llist);
pos.x += (**i).GetWidth();
xpos += (**i).GetLength();
}
}
/*
This function does all the recalculation, that is, it should only be
called from within wxLayoutList::Layout(), as it uses the current
list's styleinfo and updates it.
*/
void
wxLayoutLine::Layout(wxDC &dc,
wxLayoutList *llist,
wxPoint *cursorPos,
wxPoint *cursorSize,
wxLayoutStyleInfo *cursorStyle,
int cx,
bool WXUNUSED(suppressSIupdate))
{
wxLayoutObjectList::iterator i;
// when a line becomes dirty, we redraw it from the place where it was
// changed till the end of line (because the following wxLayoutObjects are
// moved when the preceding one changes) - calculate the update rectangle.
CoordType updateTop = m_Position.y,
updateLeft = -1,
updateWidth = m_Width,
updateHeight = m_Height;
CoordType
topHeight = 0,
bottomHeight = 0; // above and below baseline
CoordType
objTopHeight, objBottomHeight; // above and below baseline
CoordType
len, count = 0;
CoordType heightOld = m_Height;
m_Height = 0;
m_Width = 0;
m_BaseLine = 0;
bool cursorFound = false;
RecalculatePosition(llist);
if(cursorPos)
{
*cursorPos = m_Position;
if(cursorSize) *cursorSize = wxPoint(0,0);
}
m_StyleInfo = llist->GetStyleInfo(); // save current style
for(i = m_ObjectList.begin(); i != NULLIT; i++)
{
wxLayoutObject *obj = *i;
obj->Layout(dc, llist);
wxPoint sizeObj = obj->GetSize(&objTopHeight, &objBottomHeight);
if(cursorPos && ! cursorFound)
{
// we need to check whether the text cursor is here
len = obj->GetLength();
if(count <= cx && count+len > cx)
{
if(obj->GetType() == WXLO_TYPE_TEXT)
{
len = cx - count; // pos in object
CoordType width, height, descent;
dc.GetTextExtent((*(wxLayoutObjectText*)*i).GetText().substr(0,len),
&width, &height, &descent);
cursorPos->x += width;
cursorPos->y = m_Position.y;
wxString str;
if(len < obj->GetLength())
str = (*(wxLayoutObjectText*)*i).GetText().substr(len,1);
else
str = _T(WXLO_CURSORCHAR);
dc.GetTextExtent(str, &width, &height, &descent);
if(cursorStyle) // set style info
*cursorStyle = llist->GetStyleInfo();
if ( cursorSize )
{
// Just in case some joker inserted an empty string object:
if(width == 0)
width = WXLO_MINIMUM_CURSOR_WIDTH;
if(height == 0)
height = sizeObj.y;
cursorSize->x = width;
cursorSize->y = height;
}
cursorFound = true; // no more checks
}
else
{
// on some other object
CoordType top, bottom; // unused
if(cursorSize)
*cursorSize = obj->GetSize(&top,&bottom);
cursorPos->y = m_Position.y;
cursorFound = true; // no more checks
}
}
else
{
count += len;
cursorPos->x += obj->GetWidth();
}
} // cursor finding
m_Width += sizeObj.x;
if(sizeObj.y > m_Height)
{
m_Height = sizeObj.y;
}
if(objTopHeight > topHeight)
topHeight = objTopHeight;
if(objBottomHeight > bottomHeight)
bottomHeight = objBottomHeight;
}
if ( IsDirty() )
{
if ( updateHeight < m_Height )
updateHeight = m_Height;
if ( updateWidth < m_Width )
updateWidth = m_Width;
// update all line if we don't know where to start from
if ( updateLeft == -1 )
updateLeft = 0;
llist->SetUpdateRect(updateLeft, updateTop);
llist->SetUpdateRect(updateLeft + updateWidth + MSW_CORRECTION,
updateTop + updateHeight + MSW_CORRECTION);
}
if(topHeight + bottomHeight > m_Height)
{
m_Height = topHeight+bottomHeight;
}
m_BaseLine = topHeight;
if(m_Height == 0)
{
CoordType width, height, descent;
dc.GetTextExtent(_T(WXLO_CURSORCHAR), &width, &height, &descent);
m_Height = height;
m_BaseLine = m_Height - descent;
}
// tell next line about coordinate change
if(m_Next && m_Height != heightOld)
{
m_Next->MarkDirty();
}
// We need to check whether we found a valid cursor size:
if(cursorPos && cursorSize)
{
// this might be the case if the cursor is at the end of the
// line or on a command object:
if(cursorSize->x < WXLO_MINIMUM_CURSOR_WIDTH)
{
CoordType width, height, descent;
dc.GetTextExtent(_T(WXLO_CURSORCHAR), &width, &height, &descent);
cursorSize->x = width;
cursorSize->y = height;
}
if(m_BaseLine >= cursorSize->y) // the normal case anyway
cursorPos->y += m_BaseLine-cursorSize->y;
}
MarkClean();
}
wxLayoutLine *
wxLayoutLine::Break(CoordType xpos, wxLayoutList *llist)
{
wxASSERT(xpos >= 0);
MarkDirty(xpos);
CoordType offset;
wxLOiterator i = FindObject(xpos, &offset);
if(i == NULLIT)
// must be at the end of the line then
return new wxLayoutLine(this, llist);
// split this line:
wxLayoutLine *newLine = new wxLayoutLine(this, llist);
// split object at i:
if((**i).GetType() == WXLO_TYPE_TEXT
&& offset != 0
&& offset != (**i).GetLength() )
{
wxString left, right;
wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
left = tobj->GetText().substr(0,offset);
right = tobj->GetText().substr(offset,tobj->GetLength()-offset);
// current text object gets set to left half
tobj->GetText() = left; // set new text
newLine->Append(new wxLayoutObjectText(right));
m_Length -= right.Length();
i++; // don't move this object to the new list
}
else
{
if(offset > 0)
i++; // move objects from here to new list
}
while(i != m_ObjectList.end())
{
wxLayoutObject *obj = *i;
newLine->Append(obj);
m_Length -= obj->GetLength();
m_ObjectList.remove(i); // remove without deleting it
}
if(m_Next)
m_Next->MarkDirty();
return newLine;
}
bool
wxLayoutLine::Wrap(CoordType wrapmargin, wxLayoutList *llist)
{
if(GetLength() < wrapmargin)
return FALSE; // nothing to do
// find the object which covers the wrapmargin:
CoordType offset;
wxLOiterator i = FindObject(wrapmargin, &offset);
wxCHECK_MSG( i != NULLIT, FALSE,
wxT("Cannot find object covering wrapmargin."));
// from this object on, the rest of the line must be copied to the
// next one:
wxLOiterator copyObject = NULLIT;
// if we split a text-object, we must pre-pend some text to the
// next line later on, remember it here:
wxString prependText = _T("");
// we might need to adjust the cursor position later, so remember it
size_t xpos = llist->GetCursorPos().x;
// by how much did we shorten the current line:
size_t shorter = 0;
// remember cursor location of object
size_t objectCursorPos = 0;
size_t breakpos = offset;
if( (**i).GetType() != WXLO_TYPE_TEXT )
{
// break before a non-text object
copyObject = i;
}
else
{
bool foundSpace = FALSE;
do
{
// while(i != NULLIT && (**i).GetType() != WXLO_TYPE_TEXT)
// i--;
// try to find a suitable place to split the object:
wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
if((**i).GetType() == WXLO_TYPE_TEXT
&& tobj->GetText().Length() >= breakpos)
{
do
{
foundSpace = isspace(tobj->GetText()[breakpos]) != 0;
if ( foundSpace )
break;
}
while ( breakpos-- > 0 );
}
else
{
breakpos = 0;
}
if(! foundSpace) // breakpos == 0!
{
if(i == m_ObjectList.begin())
return FALSE; // could not break line
else
{
i--;
while(i != m_ObjectList.begin()
&& (**i).GetType() != WXLO_TYPE_TEXT )
{
i--;
}
breakpos = (**i).GetLength();
}
}
}while(! foundSpace);
// before we actually break the object, we need to know at which
// cursorposition it starts, so we can restore the cursor if needed:
if( this == llist->GetCursorLine() && xpos >= breakpos )
{
for(wxLOiterator j = m_ObjectList.begin();
j != NULLIT && j != i; j++)
objectCursorPos += (**j).GetLength();
}
// now we know where to break it:
wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
shorter = tobj->GetLength() - breakpos;
// remember text to copy from this object
prependText = tobj->GetText().Mid(breakpos+1);
tobj->SetText(tobj->GetText().Left(breakpos));
// copy every following object:
copyObject = i; copyObject ++;
}
// make sure there is an empty m_Next line:
(void) new wxLayoutLine(this, llist);
wxASSERT(m_Next);
// We need to move this and all following objects to the next
// line. Starting from the end of line, to keep the order right.
if(copyObject != NULLIT)
{
wxLOiterator j;
for(j = m_ObjectList.tail(); j != copyObject; j--)
m_Next->Prepend(*j);
m_Next->Prepend(*copyObject);
// and now remove them from this list:
while( copyObject != m_ObjectList.end() )
{
shorter += (**copyObject).GetLength();
m_ObjectList.remove(copyObject); // remove without deleting it
}
}
m_Length -= shorter;
if(prependText.Length() > 0)
m_Next->Insert(0, prependText);
// do we need to adjust the cursor position?
if( this == llist->GetCursorLine() && xpos >= breakpos)
{
xpos = objectCursorPos + (xpos - objectCursorPos - breakpos -
((xpos > breakpos) ? 1 : 0 ));
#if 0
// this assert is useless when xpos has unsigned type
wxASSERT(xpos >= 0);
#endif
llist->MoveCursorTo( wxPoint( xpos, m_Next->GetLineNumber()) );
}
return TRUE; // we wrapped the line
}
void
wxLayoutLine::ReNumber(void)
{
CoordType lineNo = m_Previous ? m_Previous->m_LineNumber+1 : 0;
m_LineNumber = lineNo++;
for(wxLayoutLine *next = GetNextLine();
next; next = next->GetNextLine())
next->m_LineNumber = lineNo++;
}
void
wxLayoutLine::MergeNextLine(wxLayoutList *llist)
{
wxCHECK_RET( GetNextLine(),
wxT("wxLayout internal error: no next line to merge"));
wxLayoutObjectList &list = GetNextLine()->m_ObjectList;
wxLOiterator i;
MarkDirty(GetWidth());
wxLayoutObject *last = NULL;
for(i = list.begin(); i != list.end();)
{
wxLayoutObject *current = *i;
// merge text objects together for efficiency
if ( last && last->GetType() == WXLO_TYPE_TEXT &&
current->GetType() == WXLO_TYPE_TEXT )
{
wxLayoutObjectText *textObj = (wxLayoutObjectText *)last;
wxString text(textObj->GetText());
text += ((wxLayoutObjectText *)current)->GetText();
textObj->SetText(text);
list.erase(i); // remove and delete it
}
else
{
// just append the object "as was"
Append(current);
list.remove(i); // remove without deleting it
}
}
wxASSERT(list.empty());
wxLayoutLine *oldnext = GetNextLine();
wxLayoutLine *nextLine = oldnext->GetNextLine();
SetNext(nextLine);
if ( nextLine )
{
nextLine->ReNumber();
}
else
{
// this is now done in Delete(), but if this function is ever called
// from elsewhere, we might have to move refresh code back here (in
// order not to duplicate it)
#if 0
wxPoint pos(oldnext->GetPosition());
llist->SetUpdateRect(pos);
llist->SetUpdateRect(pos.x + oldnext->GetWidth() + MSW_CORRECTION,
pos.y + oldnext->GetHeight() + MSW_CORRECTION);
#endif // 0
}
llist->DecNumLines();
delete oldnext;
}
CoordType
wxLayoutLine::GetWrapPosition(CoordType column)
{
CoordType offset;
wxLOiterator i = FindObject(column, &offset);
if(i == NULLIT) return -1; // cannot wrap
// go backwards through the list and look for space in text objects
do
{
if((**i).GetType() == WXLO_TYPE_TEXT)
{
do
{
if(isspace(((wxLayoutObjectText*)*i)->GetText().c_str()[(size_t)offset]))
return column;
else
{
offset--;
column--;
}
}while(offset != -1);
i--; // move on to previous object
}
else
{
column -= (**i).GetLength();
i--;
}
if( i != NULLIT)
offset = (**i).GetLength();
}while(i != NULLIT);
/* If we reached the begin of the list and have more than one
object, that one is longer than the margin, so break behind
it. */
CoordType pos = 0;
i = m_ObjectList.begin();
while(i != NULLIT && (**i).GetType() != WXLO_TYPE_TEXT)
{
pos += (**i).GetLength();
i++;
}
if(i == NULLIT) return -1; //why should this happen?
// now we are behind the one long text object and need to find the
// first space in it
for(offset = 0; offset < (**i).GetLength(); offset++)
if( isspace(((wxLayoutObjectText*)*i)->GetText().c_str()[(size_t)offset]))
{
return pos+offset;
}
pos += (**i).GetLength();
return pos;
}
#ifdef WXLAYOUT_DEBUG
void
wxLayoutLine::Debug(void) const
{
wxPoint pos = GetPosition();
WXLO_DEBUG((wxT("Line %ld, Pos (%ld,%ld), Height %ld, BL %ld, Font: %d"),
(long int) GetLineNumber(),
(long int) pos.x, (long int) pos.y,
(long int) GetHeight(),
(long int) m_BaseLine,
(int) m_StyleInfo.family));
if(m_ObjectList.begin() != NULLIT)
{
WXLO_DEBUG(((**m_ObjectList.begin()).DebugDump().c_str()));
}
}
#endif
void
wxLayoutLine::Copy(wxLayoutList *llist,
CoordType from,
CoordType to)
{
CoordType firstOffset, lastOffset;
if(to == -1) to = GetLength();
if(from == to) return;
wxLOiterator first = FindObject(from, &firstOffset);
wxLOiterator last = FindObject(to, &lastOffset);
// Common special case: only one object
if( first != NULLIT && last != NULLIT && *first == *last )
{
if( (**first).GetType() == WXLO_TYPE_TEXT )
{
llist->Insert(new wxLayoutObjectText(
((wxLayoutObjectText
*)*first)->GetText().substr(firstOffset,
lastOffset-firstOffset))
);
return;
}
else // what can we do?
{
if(lastOffset > firstOffset) // i.e. +1 :-)
llist->Insert( (**first).Copy() );
return;
}
}
// If we reach here, we can safely copy the whole first object from
// the firstOffset position on:
if((**first).GetType() == WXLO_TYPE_TEXT && firstOffset != 0)
{
llist->Insert(new wxLayoutObjectText(
((wxLayoutObjectText *)*first)->GetText().substr(firstOffset))
);
}
else if(firstOffset == 0)
llist->Insert( (**first).Copy() );
// else nothing to copy :-(
// Now we copy all objects before the last one:
wxLOiterator i = first; i++;
for( ; i != last; i++)
llist->Insert( (**i).Copy() );
// And now the last object:
if(lastOffset != 0)
{
if( (**last).GetType() == WXLO_TYPE_TEXT )
{
llist->Insert(new wxLayoutObjectText(
((wxLayoutObjectText *)*last)->GetText().substr(0,lastOffset))
);
}
else
llist->Insert( (**last).Copy() );
}
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
The wxLayoutList object
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutList::wxLayoutList()
{
#ifdef WXLAYOUT_USE_CARET
m_caret = NULL;
#endif // WXLAYOUT_USE_CARET
m_numLines = 0;
m_FirstLine = NULL;
SetAutoFormatting(TRUE);
ForceTotalLayout(TRUE); // for the first time, do all
InvalidateUpdateRect();
Clear();
}
wxLayoutList::~wxLayoutList()
{
SetAutoFormatting(FALSE);
InternalClear();
Empty();
m_FirstLine->DeleteLine(false, this);
wxASSERT_MSG( m_numLines == 0, wxT("line count calculation broken"));
}
void
wxLayoutList::Empty(void)
{
while(m_FirstLine)
m_FirstLine = m_FirstLine->DeleteLine(false, this);
m_CursorPos = wxPoint(0,0);
m_CursorScreenPos = wxPoint(0,0);
m_CursorSize = wxPoint(0,0);
m_movedCursor = true;
m_FirstLine = new wxLayoutLine(NULL, this); // empty first line
m_CursorLine = m_FirstLine;
InvalidateUpdateRect();
}
void
wxLayoutList::InternalClear(void)
{
m_Selection.m_selecting = false;
m_Selection.m_valid = false;
m_DefaultStyleInfo.family = wxSWISS;
m_DefaultStyleInfo.size = WXLO_DEFAULTFONTSIZE;
m_DefaultStyleInfo.style = wxNORMAL;
m_DefaultStyleInfo.weight = wxNORMAL;
m_DefaultStyleInfo.underline = 0;
m_DefaultStyleInfo.m_fg_valid = TRUE;
m_DefaultStyleInfo.m_fg = *wxBLACK;
m_DefaultStyleInfo.m_bg_valid = TRUE;
m_DefaultStyleInfo.m_bg = *wxWHITE;
m_CurrentStyleInfo = m_DefaultStyleInfo;
m_CursorStyleInfo = m_DefaultStyleInfo;
}
void
wxLayoutList::Read(wxString &istr)
{
/* In order to handle input of formatted string "nicely", we need
to restore our current font settings after the string. So first
of all, we create a StyleInfo structure with our current
settings. */
wxLayoutStyleInfo current_si = GetStyleInfo();
while(istr.Length())
{
// check for a linebreak:
wxString tmp;
tmp = istr.BeforeFirst('\n');
long l = WXLO_TYPE_INVALID;
tmp.ToLong(&l);
int type = (int) l;
if(type == WXLO_TYPE_LINEBREAK)
{
LineBreak();
istr = istr.AfterFirst('\n');
}
else
{
wxLayoutObject *obj = wxLayoutObject::Read(istr);
if(obj)
Insert(obj);
}
}
/* Now we use the current_si to restore our last font settings: */
Insert(new wxLayoutObjectCmd(current_si));
}
void
wxLayoutList::SetFont(int family, int size, int style, int weight,
int underline, wxColour *fg,
wxColour *bg)
{
if(family != -1) m_CurrentStyleInfo.family = family;
if(size != -1) m_CurrentStyleInfo.size = size;
if(style != -1) m_CurrentStyleInfo.style = style;
if(weight != -1) m_CurrentStyleInfo.weight = weight;
if(underline != -1) m_CurrentStyleInfo.underline = underline != 0;
if(fg) m_CurrentStyleInfo.m_fg = *fg;
if(bg) m_CurrentStyleInfo.m_bg = *bg;
Insert(
new wxLayoutObjectCmd(
m_CurrentStyleInfo.family,
m_CurrentStyleInfo.size,
m_CurrentStyleInfo.style,
m_CurrentStyleInfo.weight,
m_CurrentStyleInfo.underline,
fg, bg));
}
void
wxLayoutList::SetFont(int family, int size, int style, int weight,
int underline, wxChar const *fg, wxChar const *bg)
{
wxColour
*cfg = NULL,
*cbg = NULL;
if( fg )
cfg = wxTheColourDatabase->FindColour(fg);
if( bg )
cbg = wxTheColourDatabase->FindColour(bg);
SetFont(family,size,style,weight,underline,cfg,cbg);
}
void
wxLayoutList::Clear(int family, int size, int style, int weight,
int underline, wxColour *fg, wxColour *bg)
{
InternalClear();
m_DefaultStyleInfo = wxLayoutStyleInfo(family, size, style, weight,
underline, fg, bg);
m_CurrentStyleInfo = m_DefaultStyleInfo;
// Empty() should be called after we set m_DefaultStyleInfo because
// otherwise the style info for the first line (created in Empty()) would be
// incorrect
Empty();
}
wxPoint
wxLayoutList::FindText(const wxString &needle, const wxPoint &cpos) const
{
int xpos;
wxLayoutLine *line;
for(line = m_FirstLine;
line;
line = line->GetNextLine())
{
if(line->GetLineNumber() >= cpos.y)
{
xpos = line->FindText(needle,
(line->GetLineNumber() == cpos.y) ?
cpos.x : 0);
if(xpos != -1)
return wxPoint(xpos, line->GetLineNumber());
}
}
return wxPoint(-1,-1);
}
bool
wxLayoutList::MoveCursorTo(wxPoint const &p)
{
AddCursorPosToUpdateRect();
wxPoint cursorPosOld = m_CursorPos;
wxLayoutLine *line = m_FirstLine;
while(line && line->GetLineNumber() != p.y)
line = line->GetNextLine();
if(line && line->GetLineNumber() == p.y) // found it
{
m_CursorPos.y = p.y;
m_CursorLine = line;
CoordType len = line->GetLength();
if(len >= p.x)
{
m_CursorPos.x = p.x;
}
else
{
m_CursorPos.x = len;
}
}
m_movedCursor = m_CursorPos != cursorPosOld;
return m_CursorPos == p;
}
bool
wxLayoutList::MoveCursorVertically(int n)
{
AddCursorPosToUpdateRect();
wxPoint cursorPosOld = m_CursorPos;
bool rc;
if(n < 0) // move up
{
if(m_CursorLine == m_FirstLine) return false;
while(n < 0 && m_CursorLine)
{
m_CursorLine = m_CursorLine->GetPreviousLine();
m_CursorPos.y--;
n++;
}
if(! m_CursorLine)
{
m_CursorLine = m_FirstLine;
m_CursorPos.y = 0;
rc = false;
}
else
{
if(m_CursorPos.x > m_CursorLine->GetLength())
m_CursorPos.x = m_CursorLine->GetLength();
rc = true;
}
}
else // move down
{
wxLayoutLine *last = m_CursorLine;
if(! m_CursorLine->GetNextLine()) return false;
while(n > 0 && m_CursorLine)
{
n--;
m_CursorPos.y ++;
last = m_CursorLine;
m_CursorLine = m_CursorLine->GetNextLine();
}
if(! m_CursorLine)
{
m_CursorLine = last;
m_CursorPos.y --;
rc = false;
}
else
{
if(m_CursorPos.x > m_CursorLine->GetLength())
m_CursorPos.x = m_CursorLine->GetLength();
rc = true;
}
}
m_movedCursor = m_CursorPos != cursorPosOld;
return rc;
}
bool
wxLayoutList::MoveCursorHorizontally(int n)
{
AddCursorPosToUpdateRect();
wxPoint cursorPosOld = m_CursorPos;
int move;
while(n < 0)
{
if(m_CursorPos.x == 0) // at begin of line
{
if(! MoveCursorVertically(-1))
break;
MoveCursorToEndOfLine();
n++;
continue;
}
move = -n;
if(move > m_CursorPos.x) move = m_CursorPos.x;
m_CursorPos.x -= move; n += move;
}
while(n > 0)
{
int len = m_CursorLine->GetLength();
if(m_CursorPos.x == len) // at end of line
{
if(! MoveCursorVertically(1))
break;
MoveCursorToBeginOfLine();
n--;
continue;
}
move = n;
if( move >= len-m_CursorPos.x) move = len-m_CursorPos.x;
m_CursorPos.x += move;
n -= move;
}
m_movedCursor = m_CursorPos != cursorPosOld;
return n == 0;
}
bool
wxLayoutList::MoveCursorWord(int n, bool untilNext)
{
wxCHECK_MSG( m_CursorLine, false, wxT("no current line") );
wxCHECK_MSG( n == -1 || n == +1, false, wxT("not implemented yet") );
CoordType moveDistance = 0;
CoordType offset;
wxLayoutLine *lineCur = m_CursorLine;
for ( wxLOiterator i = lineCur->FindObject(m_CursorPos.x, &offset);
n != 0;
n > 0 ? i++ : i-- )
{
if ( i == NULLIT )
{
if ( n > 0 )
{
// moving forward, pass to the first object of the next line
moveDistance++;
lineCur = lineCur->GetNextLine();
if ( lineCur )
i = lineCur->GetFirstObject();
}
else
{
// moving backwards, pass to the last object of the prev line
moveDistance--;
lineCur = lineCur->GetPreviousLine();
if ( lineCur )
i = lineCur->GetLastObject();
}
if ( i == NULLIT )
{
// moved to the end/beginning of text
return false;
}
offset = -1;
}
wxLayoutObject *obj = *i;
if ( offset == -1 )
{
// calculate offset: we are either at the very beginning or the very
// end of the object, so it isn't very difficult (the only time when
// offset is != -1 is for the very first iteration when its value is
// returned by FindObject)
if ( n > 0 )
offset = 0;
else
offset = obj->GetLength();
}
if( obj->GetType() != WXLO_TYPE_TEXT )
{
// any visible non text objects count as one word
if ( obj->IsVisibleObject() )
{
n > 0 ? n-- : n++;
moveDistance += obj->GetLength();
}
}
else // text object
{
wxLayoutObjectText *tobj = (wxLayoutObjectText *)obj;
bool canAdvance = true;
if ( offset == tobj->GetLength() )
{
// at end of object
if ( n > 0 )
{
// can't move further in this text object
canAdvance = false;
// still should move over the object border
moveDistance++;
n--;
}
else if ( offset > 0 )
{
// offset is off by 1, make it a valid index
offset--;
}
}
if ( canAdvance )
{
const wxString& text = tobj->GetText();
const wxChar *start = text.c_str();
const wxChar *end = start + text.length();
const wxChar *p = start + offset;
if ( n < 0 )
{
if ( offset > 0 )
p--;
}
// to the beginning/end of the next/prev word
while ( p >= start && p < end && isspace(*p) )
{
n > 0 ? p++ : p--;
}
// go to the end/beginning of the word (in a broad sense...)
while ( p >= start && p < end && !isspace(*p) )
{
n > 0 ? p++ : p--;
}
if ( n > 0 )
{
if ( untilNext )
{
// now advance to the beginning of the next word
while ( isspace(*p) && p < end )
p++;
}
}
else // backwards
{
// in these 2 cases we took 1 char too much
if ( (p < start) || isspace(*p) )
{
p++;
}
}
CoordType moveDelta = p - start - offset;
if ( (n < 0) && (offset == tobj->GetLength() - 1) )
{
// because we substracted 1 from offset in this case above, now
// compensate for it
moveDelta--;
}
if ( moveDelta != 0 )
{
moveDistance += moveDelta;
n > 0 ? n-- : n++;
}
}
}
// except for the first iteration, offset is calculated in the beginning
// of the loop
offset = -1;
}
MoveCursorHorizontally(moveDistance);
return true;
}
bool
wxLayoutList::Insert(wxString const &text)
{
wxASSERT(m_CursorLine);
wxASSERT_MSG( text.Find(wxT('\n')) == wxNOT_FOUND,
wxT("use wxLayoutImportText!") );
if ( !text )
return true;
AddCursorPosToUpdateRect();
wxASSERT(m_CursorLine->GetLength() >= m_CursorPos.x);
if ( !m_CursorLine->Insert(m_CursorPos.x, text) )
return false;
m_CursorPos.x += text.Length();
m_movedCursor = true;
if(m_AutoFormat)
m_CursorLine->MarkDirty();
return true;
}
bool
wxLayoutList::Insert(wxLayoutObject *obj)
{
wxASSERT(m_CursorLine);
if(! m_CursorLine)
m_CursorLine = GetFirstLine();
AddCursorPosToUpdateRect();
m_CursorLine->Insert(m_CursorPos.x, obj);
m_CursorPos.x += obj->GetLength();
m_movedCursor = true;
if(m_AutoFormat)
m_CursorLine->MarkDirty();
return true;
}
bool
wxLayoutList::Insert(wxLayoutList *llist)
{
wxASSERT(llist);
bool rc = TRUE;
for(wxLayoutLine *line = llist->GetFirstLine();
line;
line = line->GetNextLine()
)
{
for(wxLOiterator i = line->GetFirstObject();
i != NULLIT;
i++)
rc |= Insert(*i);
LineBreak();
}
return rc;
}
bool
wxLayoutList::LineBreak(void)
{
wxASSERT(m_CursorLine);
AddCursorPosToUpdateRect();
wxPoint position(m_CursorLine->GetPosition());
CoordType
width = m_CursorLine->GetWidth(),
height = m_CursorLine->GetHeight();
m_CursorLine = m_CursorLine->Break(m_CursorPos.x, this);
if(m_CursorLine->GetPreviousLine() == NULL)
m_FirstLine = m_CursorLine;
m_CursorPos.y++;
m_CursorPos.x = 0;
// The following code will produce a height which is guaranteed to
// be too high: old lineheight + the height of both new lines.
// We can probably drop the old line height and start with height =
// 0. FIXME
wxLayoutLine *prev = m_CursorLine->GetPreviousLine();
if(prev)
height += prev->GetHeight();
height += m_CursorLine->GetHeight();
m_movedCursor = true;
SetUpdateRect(position);
SetUpdateRect(position.x + width + MSW_CORRECTION,
position.y + height + MSW_CORRECTION);
return true;
}
bool
wxLayoutList::WrapLine(CoordType column)
{
return m_CursorLine->Wrap(column, this);
}
bool
wxLayoutList::WrapAll(CoordType column)
{
wxLayoutLine *line = m_FirstLine;
if(! line)
return FALSE;
bool rc = TRUE;
while(line && rc)
{
rc &= line->Wrap(column, this);
line = line->GetNextLine();
}
return rc;
}
bool
wxLayoutList::Delete(CoordType npos)
{
wxCHECK_MSG(m_CursorLine, false, wxT("can't delete in non existing line"));
if ( npos == 0 )
return true;
AddCursorPosToUpdateRect();
// were other lines appended to this one (this is important to know because
// this means that our width _increased_ as the result of deletion)
bool wasMerged = false;
// the size of the region to update
CoordType totalHeight = m_CursorLine->GetHeight(),
totalWidth = m_CursorLine->GetWidth();
CoordType left;
do
{
left = m_CursorLine->Delete(m_CursorPos.x, npos);
if( left > 0 )
{
// More to delete, continue on next line.
// First, check if line is empty:
if(m_CursorLine->GetLength() == 0)
{
// in this case, updating could probably be optimised
#ifdef WXLO_DEBUG
wxASSERT(DeleteLines(1) == 0);
#else
DeleteLines(1);
#endif
left--;
}
else
{
// Need to join next line
if(! m_CursorLine->GetNextLine())
break; // cannot
else
{
wasMerged = true;
wxLayoutLine *next = m_CursorLine->GetNextLine();
if ( next )
{
totalHeight += next->GetHeight();
totalWidth += next->GetWidth();
m_CursorLine->MergeNextLine(this);
left--;
}
else
{
wxFAIL_MSG(wxT("can't delete all this"));
return false;
}
}
}
}
}
while ( left> 0 );
// we need to update the whole tail of the line and the lines which
// disappeared
if ( wasMerged )
{
wxPoint position(m_CursorLine->GetPosition());
SetUpdateRect(position);
SetUpdateRect(position.x + totalWidth + MSW_CORRECTION,
position.y + totalHeight + MSW_CORRECTION);
}
return left == 0;
}
int
wxLayoutList::DeleteLines(int n)
{
wxASSERT(m_CursorLine);
wxLayoutLine *line;
AddCursorPosToUpdateRect();
while(n > 0)
{
if(!m_CursorLine->GetNextLine())
{ // we cannot delete this line, but we can clear it
MoveCursorToBeginOfLine();
DeleteToEndOfLine();
if(m_AutoFormat)
m_CursorLine->MarkDirty();
return n-1;
}
//else:
line = m_CursorLine;
m_CursorLine = m_CursorLine->DeleteLine(true, this);
n--;
if(line == m_FirstLine) m_FirstLine = m_CursorLine;
wxASSERT(m_FirstLine);
wxASSERT(m_CursorLine);
}
if(m_AutoFormat)
m_CursorLine->MarkDirty();
return n;
}
void
wxLayoutList::Recalculate(wxDC &dc, CoordType bottom)
{
if(! m_AutoFormat)
return;
wxLayoutLine *line = m_FirstLine;
// first, make sure everything is calculated - this might not be
// needed, optimise it later
ApplyStyle(m_DefaultStyleInfo, dc);
while(line)
{
line->RecalculatePosition(this); // so we don't need to do it all the time
// little condition to speed up redrawing:
if(bottom != -1 && line->GetPosition().y > bottom) break;
line = line->GetNextLine();
}
}
wxPoint
wxLayoutList::GetCursorScreenPos(void) const
{
return m_CursorScreenPos;
}
/*
Is called before each Draw(). Now, it will re-layout all lines which
have changed.
*/
void
wxLayoutList::Layout(wxDC &dc, CoordType bottom, bool forceAll,
wxPoint *cpos, wxPoint *csize)
{
// first, make sure everything is calculated - this might not be
// needed, optimise it later
ApplyStyle(m_DefaultStyleInfo, dc);
if(m_ReLayoutAll)
{
forceAll = TRUE;
bottom = -1;
}
ForceTotalLayout(FALSE);
// If one line was dirty, we need to re-calculate all
// following lines, too.
bool wasDirty = forceAll;
// we need to layout until we reach at least the cursor line,
// otherwise we won't be able to scroll to it
bool cursorReached = false;
wxLayoutLine *line = m_FirstLine;
while(line)
{
if(! wasDirty)
ApplyStyle(line->GetStyleInfo(), dc);
if(
// if any previous line was dirty, we need to layout all
// following lines:
wasDirty
// go on until we find the cursorline
|| ! cursorReached
// layout dirty lines:
|| line->IsDirty()
// always layout the cursor line toupdate the cursor
// position and size:
|| line == m_CursorLine
// or if it's the line we are asked to look for:
|| (cpos && line->GetLineNumber() == cpos->y)
// layout at least the desired region:
|| (bottom == -1 )
|| (line->GetPosition().y <= bottom)
)
{
if(line->IsDirty())
wasDirty = true;
// The following Layout() calls will update our
// m_CurrentStyleInfo if needed.
if(line == m_CursorLine)
{
line->Layout(dc, this,
(wxPoint *)&m_CursorScreenPos,
(wxPoint *)&m_CursorSize,
&m_CursorStyleInfo,
m_CursorPos.x);
// we cannot layout the line twice, so copy the coords:
if(cpos && line ->GetLineNumber() == cpos->y)
{
*cpos = m_CursorScreenPos;
if ( csize )
*csize = m_CursorSize;
}
cursorReached = TRUE;
}
else
{
if(cpos && line->GetLineNumber() == cpos->y)
{
line->Layout(dc, this,
cpos,
csize, NULL, cpos->x);
cursorReached = TRUE;
}
else
line->Layout(dc, this);
}
}
line = line->GetNextLine();
}
#ifndef WXLAYOUT_USE_CARET
// can only be 0 if we are on the first line and have no next line
wxASSERT(m_CursorSize.x != 0 || (m_CursorLine &&
m_CursorLine->GetNextLine() == NULL &&
m_CursorLine == m_FirstLine));
#endif // WXLAYOUT_USE_CARET
AddCursorPosToUpdateRect();
}
wxPoint
wxLayoutList::GetScreenPos(wxDC &dc, const wxPoint &cpos, wxPoint *csize)
{
wxPoint pos = cpos;
Layout(dc, -1, false, &pos, csize);
return pos;
}
void
wxLayoutList::Draw(wxDC &dc,
wxPoint const &offset,
CoordType top,
CoordType bottom,
bool clipStrictly)
{
wxLayoutLine *line = m_FirstLine;
if ( m_Selection.m_discarded )
{
// calculate them if we don't have them already
if ( !m_Selection.HasValidScreenCoords() )
{
m_Selection.m_ScreenA = GetScreenPos(dc, m_Selection.m_CursorA);
m_Selection.m_ScreenB = GetScreenPos(dc, m_Selection.m_CursorB);
}
// invalidate the area which was previousle selected - and which is not
// selected any more
SetUpdateRect(m_Selection.m_ScreenA);
SetUpdateRect(m_Selection.m_ScreenB);
m_Selection.m_discarded = false;
}
/* This call to Layout() will re-calculate and update all lines
marked as dirty.
*/
Layout(dc, bottom);
ApplyStyle(m_DefaultStyleInfo, dc);
wxBrush brush(m_CurrentStyleInfo.m_bg, wxSOLID);
dc.SetBrush(brush);
dc.SetBackgroundMode(wxTRANSPARENT);
while(line)
{
// only draw if between top and bottom:
if((top == -1 ||
line->GetPosition().y + line->GetHeight() > top))
{
ApplyStyle(line->GetStyleInfo(), dc);
// little condition to speed up redrawing:
if( bottom != -1
&& line->GetPosition().y
+(clipStrictly ? line->GetHeight() : 0) >= bottom)
break;
line->Draw(dc, this, offset);
}
line = line->GetNextLine();
}
InvalidateUpdateRect();
WXLO_DEBUG((wxT("Selection is %s : %ld,%ld/%ld,%ld"),
m_Selection.m_valid ? wxT("valid") : wxT("invalid"),
m_Selection.m_CursorA.x, m_Selection.m_CursorA.y,
m_Selection.m_CursorB.x, m_Selection.m_CursorB.y));
}
wxLayoutObject *
wxLayoutList::FindObjectScreen(wxDC &dc, wxPoint const pos,
wxPoint *cursorPos,
bool *found)
{
// First, find the right line:
wxLayoutLine
*line = m_FirstLine,
*lastline = m_FirstLine;
wxPoint p;
ApplyStyle(m_DefaultStyleInfo, dc);
while(line)
{
p = line->GetPosition();
if(p.y <= pos.y && p.y+line->GetHeight() >= pos.y)
break;
lastline = line;
line = line->GetNextLine();
}
bool didFind = line != NULL;
if ( !line )
{
// use the last line:
line = lastline;
}
if ( cursorPos )
cursorPos->y = line->GetLineNumber();
bool foundinline = true;
long cx = 0;
// Now, find the object in the line:
wxLOiterator i;
if (cursorPos)
{
i = line->FindObjectScreen(dc, this,
pos.x,
&cx,
&foundinline);
cursorPos->x = cx;
}
else
i = line->FindObjectScreen(dc, this,
pos.x,
NULL,
&foundinline);
if ( found )
*found = didFind && foundinline;
return (i == NULLIT) ? NULL : *i;
}
wxPoint
wxLayoutList::GetSize(void) const
{
wxLayoutLine
*line = m_FirstLine,
*last = line;
if(! line)
return wxPoint(0,0);
wxPoint maxPoint(0,0);
// find last line:
while(line)
{
if(line->GetWidth() > maxPoint.x)
maxPoint.x = line->GetWidth();
last = line;
line = line->GetNextLine();
}
maxPoint.y = last->GetPosition().y + last->GetHeight();
// if the line was just added, its height would be 0 and we can't call
// Layout() from here because we don't have a dc and we might be not drawing
// at all, besides... So take the cursor height by default (taking 0 is bad
// because then the scrollbars won't be resized and the new line won't be
// shown at all)
if ( last->IsDirty() )
{
if ( last->GetHeight() == 0 )
maxPoint.y += m_CursorSize.y;
if ( last->GetWidth() == 0 && maxPoint.x < m_CursorSize.x )
maxPoint.x = m_CursorSize.x;
}
return maxPoint;
}
void
wxLayoutList::DrawCursor(wxDC &
#ifdef WXLAYOUT_USE_CARET
WXUNUSED(dc)
#else
dc
#endif
, bool
#ifdef WXLAYOUT_USE_CARET
WXUNUSED(active)
#else
active
#endif
, wxPoint const &translate)
{
if ( m_movedCursor )
m_movedCursor = false;
wxPoint coords(m_CursorScreenPos);
coords += translate;
#ifdef WXLAYOUT_DEBUG
WXLO_DEBUG((wxT("Drawing cursor (%ld,%ld) at %ld,%ld, size %ld,%ld, line: %ld, len %ld"),
(long)m_CursorPos.x, (long)m_CursorPos.y,
(long)coords.x, (long)coords.y,
(long)m_CursorSize.x, (long)m_CursorSize.y,
(long)m_CursorLine->GetLineNumber(),
(long)m_CursorLine->GetLength()));
wxLogStatus(wxT("Cursor is at (%d, %d)"), m_CursorPos.x, m_CursorPos.y);
#endif
#ifdef WXLAYOUT_USE_CARET
m_caret->Move(coords);
#else // !WXLAYOUT_USE_CARET
wxASSERT(m_CursorSize.x >= WXLO_MINIMUM_CURSOR_WIDTH);
dc.SetBrush(*wxWHITE_BRUSH);
//FIXME: wxGTK XOR is borken at the moment!!!dc.SetLogicalFunction(wxXOR);
dc.SetPen(wxPen(*wxBLACK,1,wxSOLID));
if(active)
{
dc.SetLogicalFunction(wxXOR);
dc.DrawRectangle(coords.x, coords.y,
m_CursorSize.x, m_CursorSize.y);
SetUpdateRect(coords.x, coords.y);
SetUpdateRect(coords.x+m_CursorSize.x,
coords.y+m_CursorSize.y);
}
else
{
dc.SetLogicalFunction(wxCOPY);
dc.DrawLine(coords.x, coords.y+m_CursorSize.y-1,
coords.x, coords.y);
SetUpdateRect(coords.x, coords.y+m_CursorSize.y-1);
SetUpdateRect(coords.x, coords.y);
}
dc.SetLogicalFunction(wxCOPY);
//dc.SetBrush(wxNullBrush);
#endif // WXLAYOUT_USE_CARET/!WXLAYOUT_USE_CARET
}
void
wxLayoutList::SetUpdateRect(CoordType x, CoordType y)
{
if(m_UpdateRectValid)
GrowRect(m_UpdateRect, x, y);
else
{
m_UpdateRect.x = x;
m_UpdateRect.y = y;
m_UpdateRect.width = 4; // large enough to avoid surprises from
m_UpdateRect.height = 4;// wxGTK :-)
m_UpdateRectValid = true;
}
}
void
wxLayoutList::StartSelection(const wxPoint& cposOrig, const wxPoint& spos)
{
wxPoint cpos(cposOrig);
if ( cpos.x == -1 )
cpos = m_CursorPos;
WXLO_DEBUG((wxT("Starting selection at %ld/%ld"), cpos.x, cpos.y));
m_Selection.m_CursorA = cpos;
m_Selection.m_CursorB = cpos;
m_Selection.m_ScreenA = spos;
m_Selection.m_ScreenB = spos;
m_Selection.m_selecting = true;
m_Selection.m_valid = false;
}
void
wxLayoutList::ContinueSelection(const wxPoint& cposOrig, const wxPoint& spos)
{
wxPoint cpos(cposOrig);
if(cpos.x == -1)
cpos = m_CursorPos;
wxASSERT(m_Selection.m_selecting == true);
wxASSERT(m_Selection.m_valid == false);
WXLO_DEBUG((wxT("Continuing selection at %ld/%ld"), cpos.x, cpos.y));
m_Selection.m_ScreenB = spos;
m_Selection.m_CursorB = cpos;
}
void
wxLayoutList::EndSelection(const wxPoint& cposOrig, const wxPoint& spos)
{
wxPoint cpos(cposOrig);
if(cpos.x == -1) cpos = m_CursorPos;
ContinueSelection(cpos, spos);
WXLO_DEBUG((wxT("Ending selection at %ld/%ld"), cpos.x, cpos.y));
// we always want m_CursorA <= m_CursorB!
if( m_Selection.m_CursorA > m_Selection.m_CursorB )
{
// exchange the start/end points
wxPoint help = m_Selection.m_CursorB;
m_Selection.m_CursorB = m_Selection.m_CursorA;
m_Selection.m_CursorA = help;
help = m_Selection.m_ScreenB;
m_Selection.m_ScreenB = m_Selection.m_ScreenA;
m_Selection.m_ScreenA = help;
}
m_Selection.m_selecting = false;
m_Selection.m_valid = true;
/// In case we just clicked somewhere, the selection will have zero
/// size, so we discard it immediately.
if(m_Selection.m_CursorA == m_Selection.m_CursorB)
DiscardSelection();
}
void
wxLayoutList::DiscardSelection()
{
if ( !HasSelection() )
return;
m_Selection.m_valid =
m_Selection.m_selecting = false;
m_Selection.m_discarded = true;
}
bool
wxLayoutList::IsSelecting(void) const
{
return m_Selection.m_selecting;
}
bool
wxLayoutList::IsSelected(const wxPoint &cursor) const
{
if ( !HasSelection() )
return false;
return (
(m_Selection.m_CursorA <= cursor
&& cursor <= m_Selection.m_CursorB)
|| (m_Selection.m_CursorB <= cursor
&& cursor <= m_Selection.m_CursorA)
);
}
/** Tests whether this layout line is selected and needs
highlighting.
@param line to test for
@return 0 = not selected, 1 = fully selected, -1 = partially
selected
*/
int
wxLayoutList::IsSelected(const wxLayoutLine *line, CoordType *from,
CoordType *to)
{
wxASSERT(line); wxASSERT(to); wxASSERT(from);
if(! m_Selection.m_valid && ! m_Selection.m_selecting)
return 0;
CoordType y = line->GetLineNumber();
if(
(m_Selection.m_CursorA.y < y && m_Selection.m_CursorB.y > y)
|| (m_Selection.m_CursorB.y < y && m_Selection.m_CursorA.y > y)
)
return 1;
else if(m_Selection.m_CursorA.y == y)
{
*from = m_Selection.m_CursorA.x;
if(m_Selection.m_CursorB.y == y)
*to = m_Selection.m_CursorB.x;
else
{
if(m_Selection.m_CursorB > m_Selection.m_CursorA)
*to = line->GetLength();
else
*to = 0;
}
if(*to < *from)
{
CoordType help = *to;
*to = *from;
*from = help;
}
return -1;
}
else if(m_Selection.m_CursorB.y == y)
{
*to = m_Selection.m_CursorB.x;
if(m_Selection.m_CursorA.y == y)
*from = m_Selection.m_CursorA.x;
else
{
if(m_Selection.m_CursorB > m_Selection.m_CursorA)
*from = 0;
else
*from = line->GetLength();
}
if(*to < *from)
{
CoordType help = *to;
*to = *from;
*from = help;
}
return -1;
}
else
return 0;
}
void
wxLayoutList::DeleteSelection(void)
{
if(! m_Selection.m_valid)
return;
m_Selection.m_valid = false;
// Only delete part of the current line?
if(m_Selection.m_CursorA.y == m_Selection.m_CursorB.y)
{
MoveCursorTo(m_Selection.m_CursorA);
Delete(m_Selection.m_CursorB.x - m_Selection.m_CursorA.x);
return;
}
// We now know that the two lines are different:
wxLayoutLine
* firstLine = GetLine(m_Selection.m_CursorA.y),
* lastLine = GetLine(m_Selection.m_CursorB.y);
// be a bit paranoid:
if(! firstLine || ! lastLine)
return;
// First, delete what's left of this line:
MoveCursorTo(m_Selection.m_CursorA);
DeleteToEndOfLine();
wxLayoutLine *prevLine = firstLine->GetPreviousLine(),
*nextLine = firstLine->GetNextLine();
while(nextLine && nextLine != lastLine)
nextLine = nextLine->DeleteLine(false, this);
// Now nextLine = lastLine;
Delete(1); // This joins firstLine and nextLine
Delete(m_Selection.m_CursorB.x); // This deletes the first x positions
// Recalculate the line positions and numbers but notice that firstLine
// might not exist any more - it could be deleted by Delete(1) above
wxLayoutLine *firstLine2 = prevLine ? prevLine->GetNextLine() : m_FirstLine;
firstLine2->MarkDirty();
}
/// Starts highlighting the selection
void
wxLayoutList::StartHighlighting(wxDC &dc)
{
#if SHOW_SELECTIONS
dc.SetTextForeground(m_CurrentStyleInfo.m_bg);
dc.SetTextBackground(m_CurrentStyleInfo.m_fg);
dc.SetBackgroundMode(wxSOLID);
#endif
}
/// Ends highlighting the selection
void
wxLayoutList::EndHighlighting(wxDC &dc)
{
#if SHOW_SELECTIONS
dc.SetTextForeground(m_CurrentStyleInfo.m_fg);
dc.SetTextBackground(m_CurrentStyleInfo.m_bg);
dc.SetBackgroundMode(wxTRANSPARENT);
#endif
}
wxLayoutLine *
wxLayoutList::GetLine(CoordType index) const
{
wxASSERT_MSG( (0 <= index) && (index < (CoordType)m_numLines),
wxT("invalid index") );
wxLayoutLine *line;
CoordType n = index;
#ifdef DEBUG
CoordType lineNo = 0;
#endif
for ( line = m_FirstLine; line && n-- > 0; line =
line->GetNextLine() )
{
#ifdef DEBUG
wxASSERT(line->GetLineNumber() == lineNo );
lineNo++;
#endif
}
if ( line )
{
// should be the right one
wxASSERT( line->GetLineNumber() == index );
}
return line;
}
wxLayoutList *
wxLayoutList::Copy(const wxPoint &from,
const wxPoint &to)
{
wxLayoutLine
* firstLine = NULL,
* lastLine = NULL;
for(firstLine = m_FirstLine;
firstLine && firstLine->GetLineNumber() < from.y;
firstLine=firstLine->GetNextLine())
;
if(!firstLine || firstLine->GetLineNumber() != from.y)
return NULL;
for(lastLine = m_FirstLine;
lastLine && lastLine->GetLineNumber() < to.y;
lastLine=lastLine->GetNextLine())
;
if(!lastLine || lastLine->GetLineNumber() != to.y)
return NULL;
if(to <= from)
{
wxLayoutLine *tmp = firstLine;
firstLine = lastLine;
lastLine = tmp;
}
wxLayoutList *llist = new wxLayoutList();
if(firstLine == lastLine)
{
firstLine->Copy(llist, from.x, to.x);
}
else
{
// Extract objects from first line
firstLine->Copy(llist, from.x);
llist->LineBreak();
// Extract all lines between
for(wxLayoutLine *line = firstLine->GetNextLine();
line != lastLine;
line = line->GetNextLine())
{
line->Copy(llist);
llist->LineBreak();
}
// Extract objects from last line
lastLine->Copy(llist, 0, to.x);
}
return llist;
}
wxLayoutList *
wxLayoutList::GetSelection(wxLayoutDataObject *wxlo, bool invalidate)
{
if(! m_Selection.m_valid)
{
if(m_Selection.m_selecting)
EndSelection();
else
return NULL;
}
if(invalidate) m_Selection.m_valid = false;
wxLayoutList *llist = Copy( m_Selection.m_CursorA,
m_Selection.m_CursorB );
if(llist && wxlo) // export as data object, too
{
wxString string;
wxLayoutExportObject *exp;
wxLayoutExportStatus status(llist);
while((exp = wxLayoutExport( &status, WXLO_EXPORT_AS_OBJECTS)) != NULL)
{
if(exp->type == WXLO_EXPORT_EMPTYLINE)
string << (int) WXLO_TYPE_LINEBREAK << '\n';
else
exp->content.object->Write(string);
delete exp;
}
wxlo->SetLayoutData(string);
}
return llist;
}
#define COPY_SI(what) if(si.what != -1) { m_CurrentStyleInfo.what = si.what; fontChanged = TRUE; }
void
wxLayoutList::ApplyStyle(wxLayoutStyleInfo const &si, wxDC &dc)
{
bool fontChanged = FALSE;
COPY_SI(family);
COPY_SI(size);
COPY_SI(style);
COPY_SI(weight);
COPY_SI(underline);
if(fontChanged)
dc.SetFont( m_FontCache.GetFont(m_CurrentStyleInfo) );
if(si.m_fg_valid)
{
m_CurrentStyleInfo.m_fg = si.m_fg;
m_CurrentStyleInfo.m_fg_valid = true;
dc.SetTextForeground(m_CurrentStyleInfo.m_fg);
}
if(si.m_bg_valid)
{
m_CurrentStyleInfo.m_bg = si.m_bg;
m_CurrentStyleInfo.m_bg_valid = true;
dc.SetTextBackground(m_CurrentStyleInfo.m_bg);
}
}
#ifdef WXLAYOUT_DEBUG
void
wxLayoutList::Debug(void)
{
WXLO_DEBUG((wxT("Cursor is in line %d, screen pos = (%d, %d)"),
m_CursorLine->GetLineNumber(),
m_CursorScreenPos.x, m_CursorScreenPos.y));
wxLayoutLine *line;
for(line = m_FirstLine; line; line = line->GetNextLine())
{
line->Debug();
}
}
#endif
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
wxLayoutPrintout
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
wxLayoutPrintout::wxLayoutPrintout(wxLayoutList *llist,
wxString const & title)
:wxPrintout(title)
{
m_llist = llist;
m_title = title;
// remove any highlighting which could interfere with printing:
m_llist->StartSelection();
m_llist->EndSelection();
// force a full layout of the list:
m_llist->ForceTotalLayout();
// layout is called in ScaleDC() when we have a DC
}
wxLayoutPrintout::~wxLayoutPrintout()
{
}
float
wxLayoutPrintout::ScaleDC(wxDC *dc)
{
// The following bit is taken from the printing sample, let's see
// whether it works for us.
/* You might use THIS code to set the printer DC to ROUGHLY reflect
* the screen text size. This page also draws lines of actual length 5cm
* on the page.
*/
// Get the logical pixels per inch of screen and printer
int ppiScreenX, ppiScreenY;
GetPPIScreen(&ppiScreenX, &ppiScreenY);
int ppiPrinterX, ppiPrinterY;
GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
if(ppiScreenX == 0) // not yet set, need to guess
{
ppiScreenX = 100;
ppiScreenY = 100;
}
if(ppiPrinterX == 0) // not yet set, need to guess
{
ppiPrinterX = 72;
ppiPrinterY = 72;
}
// This scales the DC so that the printout roughly represents the
// the screen scaling. The text point size _should_ be the right size
// but in fact is too small for some reason. This is a detail that will
// need to be addressed at some point but can be fudged for the
// moment.
float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
// Now we have to check in case our real page size is reduced
// (e.g. because we're drawing to a print preview memory DC)
int pageWidth, pageHeight;
int w, h;
dc->GetSize(&w, &h);
GetPageSizePixels(&pageWidth, &pageHeight);
if(pageWidth != 0) // doesn't work always
{
// If printer pageWidth == current DC width, then this doesn't
// change. But w might be the preview bitmap width, so scale down.
scale = scale * (float)(w/(float)pageWidth);
}
dc->SetUserScale(scale, scale);
return scale;
}
bool wxLayoutPrintout::OnPrintPage(int page)
{
wxDC *dc = GetDC();
ScaleDC(dc);
if (dc)
{
int top, bottom;
top = (page - 1)*m_PrintoutHeight;
bottom = top + m_PrintoutHeight;
WXLO_DEBUG((wxT("OnPrintPage(%d) printing from %d to %d"), page, top,
bottom));
// SetDeviceOrigin() doesn't work here, so we need to manually
// translate all coordinates.
wxPoint translate(m_Offset.x,m_Offset.y-top);
m_llist->Draw(*dc, translate, top, bottom, TRUE /* clip strictly
*/);
return true;
}
else
return false;
}
void wxLayoutPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
{
/* We allocate a temporary wxDC for printing, so that we can
determine the correct paper size and scaling. We don't actually
print anything on it. */
#if defined(__WXMSW__)
wxPrinterDC *psdc = new wxPrinterDC(wxEmptyString,wxEmptyString,_T(WXLLIST_TEMPFILE),false);
#else
wxPostScriptDC *psdc = new wxPostScriptDC(WXLLIST_TEMPFILE,false);
#endif
psdc->StartDoc(m_title);
// before we draw anything, me must make sure the list is properly
// laid out
m_llist->Layout(*psdc);
float scale = ScaleDC(psdc);
psdc->GetSize(&m_PageWidth, &m_PageHeight);
// This sets a left/top origin of 15% and 5%:
m_Offset = wxPoint((15*m_PageWidth)/100, (5*m_PageHeight)/100);
// This is the length of the printable area.
m_PrintoutHeight = m_PageHeight - 2*m_Offset.y;
m_PrintoutHeight = (int)( m_PrintoutHeight / scale); // we want to use the real paper height
m_NumOfPages = 1 +
(int)( m_llist->GetSize().y / (float)(m_PrintoutHeight));
*minPage = 1;
*maxPage = m_NumOfPages;
*selPageFrom = 1;
*selPageTo = m_NumOfPages;
psdc->EndDoc();
delete psdc;
wxRemoveFile(_T(WXLLIST_TEMPFILE));
}
bool wxLayoutPrintout::HasPage(int pageNum)
{
return pageNum <= m_NumOfPages;
}
/*
Stupid wxWindows doesn't draw proper ellipses, so we comment this
out. It's a waste of paper anyway.
*/
#if 0
void
wxLayoutPrintout::DrawHeader(wxDC &dc,
wxPoint topleft, wxPoint bottomright,
int pageno)
{
// make backups of all essential parameters
const wxBrush& brush = dc.GetBrush();
const wxPen& pen = dc.GetPen();
const wxFont& font = dc.GetFont();
dc.SetBrush(*wxWHITE_BRUSH);
dc.SetPen(wxPen(*wxBLACK,0,wxSOLID));
dc.DrawRoundedRectangle(topleft.x,
topleft.y,bottomright.x-topleft.x,
bottomright.y-topleft.y);
dc.SetBrush(*wxBLACK_BRUSH);
wxFont myfont = wxFont((WXLO_DEFAULTFONTSIZE*12)/10,
wxSWISS,wxNORMAL,wxBOLD,false,"Helvetica");
dc.SetFont(myfont);
wxString page;
page = "9999/9999 "; // many pages...
long w,h;
dc.GetTextExtent(page,&w,&h);
page.Printf("%d/%d", pageno, (int) m_NumOfPages);
dc.DrawText(page,bottomright.x-w,topleft.y+h/2);
dc.GetTextExtent("XXXX", &w,&h);
dc.DrawText(m_title, topleft.x+w,topleft.y+h/2);
// restore settings
dc.SetPen(pen);
dc.SetBrush(brush);
dc.SetFont(font);
}
#endif
wxFont &
wxFontCache::GetFont(int family, int size, int style, int weight,
bool underline)
{
for(wxFCEList::iterator i = m_FontList.begin();
i != m_FontList.end(); i++)
if( (**i).Matches(family, size, style, weight, underline) )
return (**i).GetFont();
// not found:
wxFontCacheEntry *fce = new wxFontCacheEntry(family, size, style,
weight, underline);
m_FontList.push_back(fce);
return fce->GetFont();
}
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