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wxWidgets/user/wxLayout/wxllist.cpp
Karsten Ballüder 76810b8c97 printing works, page number controls are hidden 
portrait/landscape doesn't work, pages are printed wrong


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@531 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-08-14 11:02:39 +00:00

1082 lines
28 KiB
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/*-*- c++ -*-********************************************************
* wxFTCanvas: a canvas for editing formatted text *
* *
* (C) 1998 by Karsten Ballüder (Ballueder@usa.net) *
* *
* $Id$ *
*******************************************************************/
/*
- each Object knows its size and how to draw itself
- the list is responsible for calculating positions
- the draw coordinates for each object are the top left corner
- coordinates only get calculated when things get redrawn
- during redraw each line gets iterated over twice, first just
calculating baselines and positions, second to actually draw it
- the cursor position is the position before an object, i.e. if the
buffer starts with a text-object, cursor 0,0 is just before the
first character
*/
#ifdef __GNUG__
#pragma implementation "wxllist.h"
#endif
// these two lines are for use in M:
//#include "Mpch.h"
//#include "gui/wxllist.h"
#include "wxllist.h"
#ifndef USE_PCH
# include "iostream.h"
# include <wx/dc.h>
# include <wx/postscrp.h>
# include <wx/print.h>
# include <wx/log.h>
#endif
#define BASELINESTRETCH 12
#ifdef WXLAYOUT_DEBUG
static const char *g_aTypeStrings[] =
{
"invalid", "text", "cmd", "icon", "linebreak"
};
# define wxLayoutDebug wxLogDebug
# define WXL_VAR(x) cerr << #x " = " << x ;
# define WXL_DBG_POINT(p) wxLogDebug(#p ": (%d, %d)", p.x, p.y)
# define WXL_TRACE(f) wxLogDebug(#f ": ")
# define TypeString(t) g_aTypeStrings[t]
void
wxLayoutObjectBase::Debug(void)
{
CoordType bl = 0;
wxLogDebug("%s: size = %dx%d, bl = %d",
TypeString(GetType()), GetSize(&bl).x, GetSize(&bl).y, bl);
}
#else
# define WXL_VAR(x)
# define WXL_DBG_POINT(p)
# define WXL_TRACE(f)
# define ShowCurrentObject()
# define TypeString(t) ""
inline void wxLayoutDebug(const char *, ...) { }
#endif
//-------------------------- wxLayoutObjectText
wxLayoutObjectText::wxLayoutObjectText(const String &txt)
{
m_Text = txt;
m_Width = 0;
m_Height = 0;
}
wxPoint
wxLayoutObjectText::GetSize(CoordType *baseLine) const
{
if(baseLine) *baseLine = m_BaseLine;
return wxPoint(m_Width, m_Height);
}
void
wxLayoutObjectText::Draw(wxDC &dc, wxPoint position, CoordType baseLine,
bool draw)
{
long descent = 0l;
dc.GetTextExtent(Str(m_Text),&m_Width, &m_Height, &descent);
//FIXME: wxGTK does not set descent to a descent value yet.
if(descent == 0)
descent = (2*m_Height)/10; // crude fix
m_BaseLine = m_Height - descent;
position.y += baseLine-m_BaseLine;
if(draw)
dc.DrawText(Str(m_Text),position.x,position.y);
// Don't remove this, important help for debugging layout.
# ifdef WXLAYOUT_DEBUG
// dc.DrawRectangle(position.x, position.y, m_Width, m_Height);
# endif
}
#ifdef WXLAYOUT_DEBUG
void
wxLayoutObjectText::Debug(void)
{
wxLayoutObjectBase::Debug();
wxLogDebug(" `%s`", m_Text.c_str());
}
#endif
//-------------------------- wxLayoutObjectIcon
wxLayoutObjectIcon::wxLayoutObjectIcon(wxIcon *icon)
: m_Icon(icon)
{
}
void
wxLayoutObjectIcon::Draw(wxDC &dc, wxPoint position, CoordType baseLine,
bool draw)
{
position.y += baseLine - m_Icon->GetHeight();
if(draw)
dc.DrawIcon(m_Icon,position.x,position.y);
}
wxPoint
wxLayoutObjectIcon::GetSize(CoordType *baseLine) const
{
wxASSERT(baseLine);
*baseLine = m_Icon->GetHeight();
return wxPoint(m_Icon->GetWidth(), m_Icon->GetHeight());
}
//-------------------------- wxLayoutObjectCmd
wxLayoutObjectCmd::wxLayoutObjectCmd(int size, int family, int style, int
weight, bool underline,
wxColour const *fg, wxColour const *bg)
{
m_font = new wxFont(size,family,style,weight,underline);
m_ColourFG = fg;
m_ColourBG = bg;
}
wxLayoutObjectCmd::~wxLayoutObjectCmd()
{
delete m_font;
}
wxLayoutStyleInfo *
wxLayoutObjectCmd::GetStyle(void) const
{
wxLayoutStyleInfo *si = new wxLayoutStyleInfo();
si->size = m_font->GetPointSize();
si->family = m_font->GetFamily();
si->style = m_font->GetStyle();
si->underline = m_font->GetUnderlined();
si->weight = m_font->GetWeight();
si->fg_red = m_ColourFG->Red();
si->fg_green = m_ColourFG->Green();
si->fg_blue = m_ColourFG->Blue();
si->bg_red = m_ColourBG->Red();
si->bg_green = m_ColourBG->Green();
si->bg_blue = m_ColourBG->Blue();
return si;
}
void
wxLayoutObjectCmd::Draw(wxDC &dc, wxPoint position, CoordType lineHeight,
bool draw)
{
wxASSERT(m_font);
// this get called even when draw==false, so that recalculation
// uses right font sizes
dc.SetFont(m_font);
if(m_ColourFG)
dc.SetTextForeground(*m_ColourFG);
if(m_ColourBG)
dc.SetTextBackground(*m_ColourBG);
}
//-------------------------- wxwxLayoutList
wxLayoutList::wxLayoutList()
{
m_DefaultSetting = NULL;
Clear();
}
wxLayoutList::~wxLayoutList()
{
if(m_DefaultSetting)
delete m_DefaultSetting;
// no deletion of objects, they are owned by the list
}
void
wxLayoutList::LineBreak(void)
{
Insert(new wxLayoutObjectLineBreak);
m_CursorPosition.x = 0; m_CursorPosition.y++;
}
void
wxLayoutList::SetFont(int family, int size, int style, int weight,
int underline, wxColour const *fg,
wxColour const *bg)
{
if(family != -1) m_FontFamily = family;
if(size != -1) m_FontPtSize = size;
if(style != -1) m_FontStyle = style;
if(weight != -1) m_FontWeight = weight;
if(underline != -1) m_FontUnderline = underline != 0;
if(fg != NULL) m_ColourFG = fg;
if(bg != NULL) m_ColourBG = bg;
Insert(
new wxLayoutObjectCmd(m_FontPtSize,m_FontFamily,m_FontStyle,m_FontWeight,m_FontUnderline,
m_ColourFG, m_ColourBG));
}
void
wxLayoutList::SetFont(int family, int size, int style, int weight,
int underline, char const *fg, char const *bg)
{
wxColour const
* cfg = NULL,
* cbg = NULL;
if( fg )
cfg = wxTheColourDatabase->FindColour(fg);
if( bg )
cbg = wxTheColourDatabase->FindColour(bg);
SetFont(family,size,style,weight,underline,cfg,cbg);
}
/// for access by wxLayoutWindow:
void
wxLayoutList::GetSize(CoordType *max_x, CoordType *max_y,
CoordType *lineHeight)
{
if(max_x) *max_x = m_MaxX;
if(max_y) *max_y = m_MaxY;
if(lineHeight) *lineHeight = m_LineHeight;
}
wxLayoutObjectBase *
wxLayoutList::Draw(wxDC &dc, bool findObject, wxPoint const
&findCoords, int pageNo, bool reallyDraw)
{
wxLayoutObjectList::iterator i;
// in case we need to look for an object
wxLayoutObjectBase *foundObject = NULL;
// first object in current line
wxLayoutObjectList::iterator headOfLine;
// do we need to recalculate current line?
bool recalculate = false;
// do we calculate or draw? Either true or false.
bool draw = false;
// drawing parameters:
wxPoint position = wxPoint(0,0);
wxPoint position_HeadOfLine;
CoordType baseLine = m_FontPtSize;
CoordType baseLineSkip = (BASELINESTRETCH * baseLine)/10;
// where to draw the cursor
wxPoint
cursorPosition = wxPoint(0,0),
cursorSize = wxPoint(1,baseLineSkip);
// the cursor position inside the object
CoordType cursorOffset = 0;
// object under cursor
wxLayoutObjectList::iterator cursorObject = FindCurrentObject(&cursorOffset);
// queried from each object:
wxPoint size = wxPoint(0,0);
CoordType objBaseLine = baseLine;
wxLayoutObjectType type;
// used temporarily
wxLayoutObjectText *tobj = NULL;
// this is needed for printing to a printer:
// only interesting for printer/PS output
int pageWidth, pageHeight; //GetSize() still needs int at the moment
struct
{
int top, bottom, left, right;
} margins;
int currentPage = 1;
if(pageNo > 0)
{
dc.GetSize(&pageWidth, &pageHeight);
WXL_VAR(pageHeight);
margins.top = 0; //(1*pageHeight)/10; // 10%
margins.bottom = pageHeight;// (9*pageHeight)/10; // 90%
margins.left = 0; //(1*pageWidth)/10;
margins.right = pageWidth; //(9*pageWidth)/10;
}
else
{
margins.top = 0; margins.left = 0;
margins.right = -1;
margins.bottom = -1;
}
position.y = margins.top;
position.x = margins.left;
// if the cursorobject is a cmd, we need to find the first
// printable object:
while(cursorObject != end()
&& (*cursorObject)->GetType() == WXLO_TYPE_CMD)
cursorObject++;
headOfLine = begin();
position_HeadOfLine = position;
// setting up the default:
dc.SetTextForeground( *wxBLACK );
dc.SetTextBackground( *wxWHITE );
dc.SetBackgroundMode( wxSOLID ); // to enable setting of text background
dc.SetFont( *wxNORMAL_FONT );
//FIXME: who frees the brush, how long does it need to exist?
if(m_DefaultSetting)
m_DefaultSetting->Draw(dc,wxPoint(0,0),0,true);
// we calculate everything for drawing a line, then rewind to the
// begin of line and actually draw it
i = begin();
for(;;)
{
recalculate = false;
if(i == end())
break;
type = (*i)->GetType();
// to initialise sizes of objects, we need to call Draw
if(draw && (pageNo == -1 || pageNo == currentPage))
{
(*i)->Draw(dc, position, baseLine, draw);
#ifdef WXLAYOUT_DEBUG
if(i == begin())
wxLogDebug("first position = (%d,%d)",(int) position.x, (int)position.y);
#endif
}
// update coordinates for next object:
size = (*i)->GetSize(&objBaseLine);
if(findObject && draw) // we need to look for an object
{
if(findCoords.y >= position.y
&& findCoords.y <= position.y+size.y
&& findCoords.x >= position.x
&& findCoords.x <= position.x+size.x)
{
foundObject = *i;
findObject = false; // speeds things up
}
}
// draw the cursor
if(m_Editable && draw && i == cursorObject)
{
WXL_VAR((**cursorObject).GetType());
WXL_VAR(m_CursorPosition.x); WXL_VAR(m_CursorPosition.y);
if(type == WXLO_TYPE_TEXT) // special treatment
{
long descent = 0l; long width, height;
tobj = (wxLayoutObjectText *)*i;
String str = tobj->GetText();
WXL_VAR(m_CursorPosition.x);
str = str.substr(0, cursorOffset);
dc.GetTextExtent(Str(str), &width,&height, &descent);
cursorPosition = wxPoint(position.x+width,
position.y+(baseLineSkip-height));
cursorSize = wxPoint(1, height);
}
else if(type == WXLO_TYPE_LINEBREAK)
{
WXL_VAR(cursorOffset);
if(cursorOffset)
cursorPosition = wxPoint(0, position.y+baseLineSkip);
else
cursorPosition = wxPoint(0, position.y);
cursorSize = wxPoint(1,baseLineSkip);
}
else
{
// this is not necessarily the most "beautiful" solution:
//cursorPosition = wxPoint(position.x, position.y);
//cursorSize = wxPoint(size.x > 0 ? size.x : 1,size.y > 0 ? size.y : baseLineSkip);
cursorPosition = wxPoint(position.x+size.x, position.y+(size.y-baseLineSkip));
cursorSize = wxPoint(1, baseLineSkip);
}
}
// calculate next object's position:
position.x += size.x;
if(position.x > m_MaxX)
m_MaxX = position.x;
// do we need to increase the line's height?
if(size.y > baseLineSkip)
{
baseLineSkip = size.y;
recalculate = true;
}
if(objBaseLine > baseLine)
{
baseLine = objBaseLine;
recalculate = true;
}
// now check whether we have finished handling this line:
if(type == WXLO_TYPE_LINEBREAK || i == tail())
{
if(recalculate) // do this line again
{
position.x = position_HeadOfLine.x;
i = headOfLine;
continue;
}
if(! draw) // finished calculating sizes
{
// if the this line needs to go onto a new page, we need
// to change pages before drawing it:
if(pageNo > 0 && position.y > margins.bottom)
{
currentPage++;
position_HeadOfLine.y = margins.top;
}
if(reallyDraw && (pageNo == -1 || pageNo == currentPage))
{
// do this line again, this time drawing it
position = position_HeadOfLine;
draw = true;
i = headOfLine;
continue;
}
}
else // we have drawn a line, so continue calculating next one
draw = false;
}
// is it a linebreak?
if(type == WXLO_TYPE_LINEBREAK || i == tail())
{
position.x = margins.left;
position.y += baseLineSkip;
baseLine = m_FontPtSize;
objBaseLine = baseLine; // not all objects set it
baseLineSkip = (BASELINESTRETCH * baseLine)/10;
headOfLine = i;
headOfLine++;
position_HeadOfLine = position;
}
i++;
}
// draw the cursor
if(m_Editable)
{
dc.DrawRectangle(cursorPosition.x, cursorPosition.y,
cursorSize.x, cursorSize.y);
}
m_MaxY = position.y;
return foundObject;
}
#ifdef WXLAYOUT_DEBUG
void
wxLayoutList::Debug(void)
{
CoordType offs;
wxLayoutObjectList::iterator i;
wxLogDebug("------------------------debug start-------------------------");
for(i = begin(); i != end(); i++)
(*i)->Debug();
wxLogDebug("-----------------------debug end----------------------------");
// show current object:
ShowCurrentObject();
i = FindCurrentObject(&offs);
wxLogDebug(" line length: %l", (long int) GetLineLength(i,offs));
if(i == end())
{
wxLogDebug("<<no object found>>");
return; // FIXME we should set cursor position to maximum allowed
// value then
}
if((*i)->GetType() == WXLO_TYPE_TEXT)
wxLogDebug(" \"%s\", offs=%d",((wxLayoutObjectText *)(*i))->GetText().c_str(), (int) offs);
else
wxLogDebug(g_aTypeStrings[(*i)->GetType()]);
}
void
wxLayoutList::ShowCurrentObject()
{
CoordType offs;
wxLayoutObjectList::iterator i = FindCurrentObject(&offs);
wxLayoutDebug("Cursor is at (%d, %d)",
m_CursorPosition.x, m_CursorPosition.y);
i = FindCurrentObject(&offs);
wxLogDebug(" Line length: %d", GetLineLength(i));
if(i == end())
{
wxLogDebug("<<no object found>>");
return; // FIXME we should set cursor position to maximum allowed
// value then
}
if((*i)->GetType() == WXLO_TYPE_TEXT)
wxLogDebug(" \"%s\", offs: %d",
((wxLayoutObjectText *)(*i))->GetText().c_str(), offs);
else
wxLogDebug(" %s", TypeString((*i)->GetType()));
}
#endif
/******************** editing stuff ********************/
// don't change this, I know how to optimise this and will do it real
// soon (KB)
/*
* FindObjectCursor:
* Finds the object belonging to a given cursor position cpos and
* returns an iterator to that object and stores the relative cursor
* position in offset.
*
* For linebreaks, the offset can be 0=before or 1=after.
*
* If the cpos coordinates don't exist, they are modified.
*/
wxLayoutObjectList::iterator
wxLayoutList::FindObjectCursor(wxPoint *cpos, CoordType *offset)
{
wxPoint object = wxPoint(0,0); // runs along the objects
CoordType width;
wxLayoutObjectList::iterator i;
#ifdef WXLAYOUT_DEBUG
wxLayoutDebug("Looking for object at (%d, %d)", cpos->x, cpos->y);
#endif
for(i = begin(); i != end() && object.y <= cpos->y; i++)
{
width = (**i).CountPositions();
if(cpos->y == object.y) // a possible candidate
{
if((**i).GetType() ==WXLO_TYPE_LINEBREAK)
{
if(cpos->x == object.x)
{
if(offset) *offset = 0;
return i;
}
if(offset) *offset=1;
cpos->x = object.x;
return i;
}
if(cpos->x >= object.x && cpos->x <= object.x+width) // overlap
{
if(offset) *offset = cpos->x-object.x;
#ifdef WXLAYOUT_DEBUG
wxLayoutDebug(" found object at (%d, %d), type: %s",
object.x, object.y, TypeString((*i)->GetType()));
#endif
return i;
}
}
// no overlap, increment coordinates
object.x += width;
if((**i).GetType() == WXLO_TYPE_LINEBREAK)
{
object.x = 0;
object.y++;
}
}
#ifdef WXLAYOUT_DEBUG
wxLayoutDebug(" not found");
#endif
// return last object, coordinates of that one:
i = tail();
if(i == end())
return i;
if((**i).GetType()==WXLO_TYPE_LINEBREAK)
{
if(offset)
*offset = 1;
return i;
}
cpos->x = object.x; // would be the coordinate of next object
cpos->y = object.y;
cpos->x += width; // last object's width
if(*offset) *offset = cpos->x-object.x;
return i; // not found
}
wxLayoutObjectList::iterator
wxLayoutList::FindCurrentObject(CoordType *offset)
{
wxLayoutObjectList::iterator obj = end();
obj = FindObjectCursor(&m_CursorPosition, offset);
if(obj == end()) // not ideal yet
{
obj = tail();
if(obj != end()) // tail really exists
*offset = (*obj)->CountPositions(); // at the end of it
}
return obj;
}
bool
wxLayoutList::MoveCursor(int dx, int dy)
{
CoordType offs, lineLength;
wxLayoutObjectList::iterator i;
bool rc = true; // have we moved?
if(dy > 0 && m_CursorPosition.y < m_MaxLine)
m_CursorPosition.y += dy;
else if(dy < 0 && m_CursorPosition.y > 0)
m_CursorPosition.y += dy; // dy is negative
if(m_CursorPosition.y < 0)
{
m_CursorPosition.y = 0;
rc = false;
}
else if (m_CursorPosition.y > m_MaxLine)
{
m_CursorPosition.y = m_MaxLine;
rc = false;
}
while(dx > 0)
{
i = FindCurrentObject(&offs);
lineLength = GetLineLength(i,offs);
if(m_CursorPosition.x < lineLength)
{
m_CursorPosition.x ++;
dx--;
continue;
}
else
{
if(m_CursorPosition.y < m_MaxLine)
{
m_CursorPosition.y++;
m_CursorPosition.x = 0;
dx--;
}
else
{
rc = false;
break; // cannot move there
}
}
}
while(dx < 0)
{
if(m_CursorPosition.x > 0)
{
m_CursorPosition.x --;
dx++;
}
else
{
if(m_CursorPosition.y > 0)
{
m_CursorPosition.y --;
m_CursorPosition.x = 0;
i = FindCurrentObject(&offs);
lineLength = GetLineLength(i,offs);
m_CursorPosition.x = lineLength;
dx++;
continue;
}
else
{
rc = false;
break; // cannot move left any more
}
}
}
// final adjustment:
i = FindCurrentObject(&offs);
lineLength = GetLineLength(i,offs);
if(m_CursorPosition.x > lineLength)
{
m_CursorPosition.x = lineLength;
rc = false;
}
#ifdef WXLAYOUT_DEBUG
ShowCurrentObject();
#endif
return rc;
}
void
wxLayoutList::Delete(CoordType count)
{
WXL_TRACE(Delete);
if(!m_Editable)
return;
WXL_VAR(count);
CoordType offs;
wxLayoutObjectList::iterator i;
do
{
i = FindCurrentObject(&offs);
startover: // ugly, but easiest way to do it
if(i == end())
return; // we cannot delete anything more
/* Here we need to treat linebreaks differently.
If offs==0 we are before the linebreak, otherwise behind. */
if((*i)->GetType() == WXLO_TYPE_LINEBREAK)
{
if(offs == 0)
{
m_MaxLine--;
erase(i);
count--;
continue; // we're done
}
else // delete the object behind the linebreak
{
i++; // we increment and continue as normal
offs=0;
goto startover;
}
}
else if((*i)->GetType() == WXLO_TYPE_TEXT)
{
wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
CoordType len = tobj->CountPositions();
// If we find the end of a text object, this means that we
// have to delete from the object following it.
if(len == offs)
{
i++;
offs = 0;
goto startover;
}
else if(len <= count) // delete this object
{
count -= len;
erase(i);
continue;
}
else
{
len = count;
tobj->GetText().erase(offs,len);
return; // we are done
}
}
else// all other objects: delete the object
// this only works as expected if the non-text object has 0/1
// as offset values. Not tested with "longer" objects.
{
CoordType len = (*i)->CountPositions();
if(offs == 0)
{
count = count > len ? count -= len : 0;
erase(i); // after this, i is the iterator for the following object
continue;
}
else // delete the following object
{
i++; // we increment and continue as normal
offs=0;
goto startover;
}
}
}
while(count && i != end());
}
void
wxLayoutList::Insert(wxLayoutObjectBase *obj)
{
wxASSERT(obj);
CoordType offs;
wxLayoutObjectList::iterator i = FindCurrentObject(&offs);
WXL_TRACE(Insert(obj));
if(i == end())
push_back(obj);
else if(offs == 0)
insert(i,obj);
// do we have to split a text object?
else if((*i)->GetType() == WXLO_TYPE_TEXT && offs != (*i)->CountPositions())
{
wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
#ifdef WXLAYOUT_DEBUG
wxLayoutDebug("text: %s", tobj->GetText().c_str());
WXL_VAR(offs);
#endif
String left = tobj->GetText().substr(0,offs); // get part before cursor
WXL_VAR(left.c_str());
tobj->GetText() = tobj->GetText().substr(offs,(*i)->CountPositions()-offs); // keeps the right half
WXL_VAR(tobj->GetText().c_str());
insert(i,obj);
insert(i,new wxLayoutObjectText(left)); // inserts before
}
else
{
// all other cases, append after object:
wxLayoutObjectList::iterator j = i; // we want to apend after this object
j++;
if(j != end())
insert(j, obj);
else
push_back(obj);
}
m_CursorPosition.x += obj->CountPositions();
if(obj->GetType() == WXLO_TYPE_LINEBREAK)
m_MaxLine++;
}
void
wxLayoutList::Insert(String const &text)
{
wxLayoutObjectText *tobj = NULL;
wxLayoutObjectList::iterator j;
WXL_TRACE(Insert(text));
if(! m_Editable)
return;
CoordType offs;
wxLayoutObjectList::iterator i = FindCurrentObject(&offs);
if(i == end())
{
Insert(new wxLayoutObjectText(text));
return;
}
switch((**i).GetType())
{
case WXLO_TYPE_TEXT:
// insert into an existing text object:
WXL_TRACE(inserting into existing object);
tobj = (wxLayoutObjectText *)*i ;
wxASSERT(tobj);
tobj->GetText().insert(offs,text);
break;
case WXLO_TYPE_LINEBREAK:
default:
j = i;
if(offs == 0) // try to append to previous object
{
j--;
if(j != end() && (**j).GetType() == WXLO_TYPE_TEXT)
{
tobj = (wxLayoutObjectText *)*j;
tobj->GetText()+=text;
}
else
insert(i,new wxLayoutObjectText(text));
}
else // cursor after linebreak
{
j++;
if(j != end() && (**j).GetType() == WXLO_TYPE_TEXT)
{
tobj = (wxLayoutObjectText *)*j;
tobj->GetText()=text+tobj->GetText();
}
else
{
if(j == end())
push_back(new wxLayoutObjectText(text));
else
insert(j,new wxLayoutObjectText(text));
}
}
break;
#if 0
default:
j = i; j--;
WXL_TRACE(checking previous object);
if(j != end() && (**j).GetType() == WXLO_TYPE_TEXT)
{
tobj = (wxLayoutObjectText *)*j;
tobj->GetText()+=text;
}
else // insert a new text object
{
WXL_TRACE(creating new object);
Insert(new wxLayoutObjectText(text)); //FIXME not too optimal, slow
return; // position gets incremented in Insert(obj)
}
#endif
}
m_CursorPosition.x += strlen(text.c_str());
}
CoordType
wxLayoutList::GetLineLength(wxLayoutObjectList::iterator i, CoordType offs)
{
if(i == end())
return 0;
CoordType len = 0;
if(offs == 0 && (**i).GetType() == WXLO_TYPE_LINEBREAK)
// we are before a linebrak
return 0;
// search backwards for beginning of line:
while(i != begin() && (*i)->GetType() != WXLO_TYPE_LINEBREAK)
i--;
if((*i)->GetType() == WXLO_TYPE_LINEBREAK)
i++;
// now we can start counting:
while(i != end() && (*i)->GetType() != WXLO_TYPE_LINEBREAK)
{
len += (*i)->CountPositions();
i++;
}
return len;
}
void
wxLayoutList::Clear(int family, int size, int style, int weight,
int underline, char const *fg, char const *bg)
{
wxLayoutObjectList::iterator i = begin();
while(i != end()) // == while valid
erase(i);
// set defaults
m_FontPtSize = size;
m_FontUnderline = false;
m_FontFamily = family;
m_FontStyle = style;
m_FontWeight = weight;
m_ColourFG = wxTheColourDatabase->FindColour(fg);
m_ColourBG = wxTheColourDatabase->FindColour(bg);
if(! m_ColourFG) m_ColourFG = wxBLACK;
if(! m_ColourBG) m_ColourBG = wxWHITE;
m_Position = wxPoint(0,0);
m_CursorPosition = wxPoint(0,0);
m_MaxLine = 0;
m_LineHeight = (BASELINESTRETCH*m_FontPtSize)/10;
m_MaxX = 0; m_MaxY = 0;
if(m_DefaultSetting)
delete m_DefaultSetting;
m_DefaultSetting = new
wxLayoutObjectCmd(m_FontPtSize,m_FontFamily,m_FontStyle,
m_FontWeight,m_FontUnderline,
m_ColourFG, m_ColourBG);
}
/******************** printing stuff ********************/
bool wxLayoutPrintout::OnPrintPage(int page)
{
wxDC *dc = GetDC();
if (dc)
{
m_llist->Draw(*dc,false,wxPoint(0,0),page);
return TRUE;
}
else
return FALSE;
}
bool wxLayoutPrintout::OnBeginDocument(int startPage, int endPage)
{
if (!wxPrintout::OnBeginDocument(startPage, endPage))
return FALSE;
return TRUE;
}
void wxLayoutPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
{
// This code doesn't work, because we don't have a DC yet.
// How on earth are we supposed to calculate the number of pages then?
*minPage = 0; // set this to 0 to disable editing of page numbers
*maxPage = 100;
*selPageFrom = 0; // set this to 0 to hide page number controls
*selPageTo = 100;
// *minPage = 1;
// *maxPage = 32000;
// *selPageFrom = 1;
// *selPageTo = 1;
#if 0
CoordType height;
int pageWidth, pageHeight;
wxDC *dc = GetDC();
wxASSERT(dc);
dc->GetSize(&pageWidth, &pageHeight);
// don't draw but just recalculate sizes:
m_llist->Draw(*dc,false,wxPoint(0,0),-1,false);
m_llist->GetSize(NULL,&height,NULL);
*minPage = 1;
*maxPage = height/pageHeight+1;
*selPageFrom = 1;
*selPageTo = *maxPage;
m_maxPage = *maxPage;
#endif
}
bool wxLayoutPrintout::HasPage(int pageNum)
{
return pageNum <= 5; // for testing
// return m_maxPage >= pageNum;
}
wxLayoutPrintout *
wxLayoutList::MakePrintout(wxString const &name)
{
return new wxLayoutPrintout(*this,name);
}
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