/*-*- c++ -*-********************************************************
- * wxFTCanvas: a canvas for editing formatted text *
+ * wxllist: wxLayoutList, a layout engine for text and graphics *
* *
- * (C) 1998 by Karsten Ballüder (Ballueder@usa.net) *
+ * (C) 1998-1999 by Karsten Ballüder (Ballueder@usa.net) *
* *
- * $Id$ *
+ * $Id$
*******************************************************************/
/*
- - 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
-#include "wxllist.h"
-#include "iostream"
+//#include "Mpch.h"
-#define VAR(x) cerr << #x"=" << x << endl;
-#define DBG_POINT(p) cerr << #p << ": " << p.x << ',' << p.y << endl
-#define TRACE(f) cerr << #f":" << endl;
-#ifdef WXDEBUG
-static const char *_t[] = { "invalid", "text", "cmd", "icon",
- "linebreak"};
+#include "wx/wxprec.h"
+#ifdef __BORLANDC__
+# pragma hdrstop
+#endif
-void
-wxLayoutObjectBase::Debug(void)
+#ifdef M_PREFIX
+# include "gui/wxllist.h"
+#else
+# include "wxllist.h"
+#endif
+
+#ifndef USE_PCH
+# include "iostream.h"
+# include <wx/dc.h>
+# include <wx/dcps.h>
+# include <wx/print.h>
+# include <wx/log.h>
+#endif
+
+#include <ctype.h>
+
+/// This should never really get created
+#define WXLLIST_TEMPFILE "__wxllist.tmp"
+
+#ifdef WXLAYOUT_DEBUG
+
+# define TypewxString(t) g_aTypewxStrings[t]
+# define WXLO_DEBUG(x) wxLogDebug x
+
+ static const char *g_aTypewxStrings[] =
+ {
+ "invalid", "text", "cmd", "icon"
+ };
+ void
+ wxLayoutObject::Debug(void)
+ {
+ WXLO_DEBUG(("%s",g_aTypewxStrings[GetType()]));
+ }
+#else
+# define TypewxString(t) ""
+# define WXLO_DEBUG(x)
+#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)
{
- CoordType bl = 0;
- cerr << _t[GetType()] << ": size=" << GetSize(&bl).x << ","
- << GetSize(&bl).y << " bl=" << bl;
+ 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;
}
-#endif
-//-------------------------- wxLayoutObjectText
+/// 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);
+}
+
+/// grows a wxRect so that it includes the given point
+
+static
+void GrowRect(wxRect &r, const wxPoint & p)
+{
+ if(r.x > p.x)
+ r.x = p.x;
+ else if(r.x + r.width < p.x)
+ r.width = p.x - r.x;
+
+ if(r.y > p.y)
+ r.y = p.y;
+ else if(r.y + r.height < p.y)
+ r.height = p.y - r.y;
+}
+
+/// 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;
+}
+//@}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ 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;
+}
wxPoint
-wxLayoutObjectText::GetSize(CoordType *baseLine) const
+wxLayoutObjectText::GetSize(CoordType *top, CoordType *bottom) const
{
- if(baseLine) *baseLine = m_BaseLine;
+
+ *top = m_Top; *bottom = m_Bottom;
return wxPoint(m_Width, m_Height);
}
void
-wxLayoutObjectText::Draw(wxDC &dc, wxPoint position, CoordType baseLine,
- bool draw)
+wxLayoutObjectText::Draw(wxDC &dc, wxPoint const &coords)
+{
+ dc.DrawText(m_Text, coords.x, coords.y-m_Top);
+}
+
+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)
{
long descent = 0l;
+
dc.GetTextExtent(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(m_Text,position.x,position.y);
-# ifdef WXDEBUG
-// dc.DrawRectangle(position.x, position.y, m_Width, m_Height);
-# endif
-}
-
-#ifdef WXDEBUG
+ m_Bottom = descent;
+ m_Top = m_Height - m_Bottom;
+}
+
+#ifdef WXLAYOUT_DEBUG
void
wxLayoutObjectText::Debug(void)
{
- wxLayoutObjectBase::Debug();
- cerr << " `" << m_Text << '\'';
+ wxLayoutObject::Debug();
+ WXLO_DEBUG((" `%s`", m_Text.c_str()));
}
#endif
-//-------------------------- wxLayoutObjectIcon
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ wxLayoutObjectIcon
+
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+wxLayoutObjectIcon::wxLayoutObjectIcon(wxBitmap const &icon)
+{
+ m_Icon = new wxBitmap(icon);
+}
+
+wxLayoutObject *
+wxLayoutObjectIcon::Copy(void)
+{
+ wxLayoutObjectIcon *obj = new wxLayoutObjectIcon(new
+ wxBitmap(*m_Icon));
+ obj->SetUserData(m_UserData);
+ return obj;
+}
-wxLayoutObjectIcon::wxLayoutObjectIcon(wxIcon *icon)
+wxLayoutObjectIcon::wxLayoutObjectIcon(wxBitmap *icon)
{
m_Icon = icon;
}
void
-wxLayoutObjectIcon::Draw(wxDC &dc, wxPoint position, CoordType baseLine,
- bool draw)
+wxLayoutObjectIcon::Draw(wxDC &dc, wxPoint const &coords)
+{
+ dc.DrawBitmap(*m_Icon, coords.x, coords.y-m_Icon->GetHeight(),
+ (m_Icon->GetMask() == NULL) ? FALSE : TRUE);
+}
+
+void
+wxLayoutObjectIcon::Layout(wxDC & /* dc */)
{
- position.y += baseLine - m_Icon->GetHeight();
- if(draw)
- dc.DrawIcon(m_Icon,position.x,position.y);
}
wxPoint
-wxLayoutObjectIcon::GetSize(CoordType *baseLine) const
+wxLayoutObjectIcon::GetSize(CoordType *top, CoordType *bottom) const
{
- wxASSERT(baseLine);
- *baseLine = m_Icon->GetHeight();
+ *top = m_Icon->GetHeight();
+ *bottom = 0;
return wxPoint(m_Icon->GetWidth(), m_Icon->GetHeight());
}
-//-------------------------- wxLayoutObjectCmd
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ wxLayoutObjectIcon
+
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
wxLayoutObjectCmd::wxLayoutObjectCmd(int size, int family, int style, int
- weight, bool underline,
- wxColour const *fg, wxColour const *bg)
+ weight, bool underline,
+ wxColour &fg, wxColour &bg)
{
m_font = new wxFont(size,family,style,weight,underline);
m_ColourBG = bg;
}
+wxLayoutObject *
+wxLayoutObjectCmd::Copy(void)
+{
+ wxLayoutStyleInfo si;
+ GetStyle(&si);
+
+ wxLayoutObjectCmd *obj = new wxLayoutObjectCmd(
+ si.size, si.family, si.style, si.weight, si.underline,
+ m_ColourFG, m_ColourBG);
+ obj->SetUserData(m_UserData);
+ return obj;
+}
+
+
wxLayoutObjectCmd::~wxLayoutObjectCmd()
{
delete m_font;
}
-wxLayoutStyleInfo *
-wxLayoutObjectCmd::GetStyle(void) const
+void
+wxLayoutObjectCmd::GetStyle(wxLayoutStyleInfo *si) 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;
+ 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();
}
void
-wxLayoutObjectCmd::Draw(wxDC &dc, wxPoint position, CoordType lineHeight,
- bool draw)
+wxLayoutObjectCmd::Draw(wxDC &dc, wxPoint const & /* coords */)
{
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);
+ dc.SetFont(*m_font);
+ dc.SetTextForeground(m_ColourFG);
+ dc.SetTextBackground(m_ColourBG);
}
-//-------------------------- wxwxLayoutList
-
-wxLayoutList::wxLayoutList()
+void
+wxLayoutObjectCmd::Layout(wxDC &dc)
{
- Clear();
+ // this get called, so that recalculation uses right font sizes
+ Draw(dc, wxPoint(0,0));
}
-wxLayoutList::~wxLayoutList()
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ The wxLayoutLine object
+
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+wxLayoutLine::wxLayoutLine(wxLayoutLine *prev, wxLayoutList *llist)
{
+ m_LineNumber = 0;
+ m_Width = m_Height = 0;
+ m_Length = 0;
+ m_Dirty = true;
+ m_Previous = prev;
+ m_Next = NULL;
+ RecalculatePosition(llist);
+ if(m_Previous)
+ {
+ m_LineNumber = m_Previous->GetLineNumber()+1;
+ m_Next = m_Previous->GetNextLine();
+ m_Previous->m_Next = this;
+ m_Height = m_Previous->GetHeight();
+ }
+ if(m_Next)
+ {
+ m_Next->m_Previous = this;
+ m_Next->MoveLines(+1);
+ m_Next->RecalculatePositions(1,llist);
+ }
}
+wxLayoutLine::~wxLayoutLine()
+{
+ // kbList cleans itself
+}
-void
-wxLayoutList::LineBreak(void)
+wxPoint
+wxLayoutLine::RecalculatePosition(wxLayoutList *llist)
{
- Insert(new wxLayoutObjectLineBreak);
- m_CursorPosition.x = 0; m_CursorPosition.y++;
+ if(m_Previous)
+ m_Position = m_Previous->GetPosition() +
+ wxPoint(0,m_Previous->GetHeight());
+ else
+ m_Position = wxPoint(0,0);
+ llist->SetUpdateRect(m_Position);
+ return m_Position;
}
void
-wxLayoutList::SetFont(int family, int size, int style, int weight,
- int underline, wxColour const *fg,
- wxColour const *bg)
+wxLayoutLine::RecalculatePositions(int recurse, wxLayoutList *llist)
{
- 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;
-
- if(fg != NULL) m_ColourFG = fg;
- if(bg != NULL) m_ColourBG = bg;
+ wxASSERT(recurse >= 0);
+ wxPoint pos = m_Position;
+ CoordType height = m_Height;
- Insert(
- new wxLayoutObjectCmd(m_FontPtSize,m_FontFamily,m_FontStyle,m_FontWeight,m_FontUnderline,
- m_ColourFG, m_ColourBG));
+// WXLO_TRACE("RecalculatePositions()");
+ RecalculatePosition(llist);
+ if(m_Next)
+ {
+ if(recurse > 0)
+ m_Next->RecalculatePositions(--recurse, llist);
+ else if(pos != m_Position || m_Height != height)
+ m_Next->RecalculatePositions(0, llist);
+ }
}
-void
-wxLayoutList::SetFont(int family, int size, int style, int weight,
- int underline, char const *fg, char const *bg)
+wxLayoutObjectList::iterator
+wxLayoutLine::FindObject(CoordType xpos, CoordType *offset) const
{
- wxColour const
- * cfg = NULL,
- * cbg = NULL;
-
- if( fg )
- cfg = wxTheColourDatabase->FindColour(fg);
- if( bg )
- cbg = wxTheColourDatabase->FindColour(bg);
+ wxASSERT(xpos >= 0);
+ wxASSERT(offset);
+ wxLayoutObjectList::iterator
+ i,
+ found = NULLIT;
+ CoordType x = 0, len;
- SetFont(family,size,style,weight,underline,cfg,cbg);
+ /* 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
}
-
-/// for access by wxLayoutWindow:
-void
-wxLayoutList::GetSize(CoordType *max_x, CoordType *max_y,
- CoordType *lineHeight)
+wxLayoutObjectList::iterator
+wxLayoutLine::FindObjectScreen(wxDC &dc, CoordType xpos, CoordType *cxpos) const
{
- wxASSERT(max_x); wxASSERT(max_y); wxASSERT(lineHeight);
- *max_x = m_MaxX;
- *max_y = m_MaxY;
- *lineHeight = m_LineHeight;
+ wxASSERT(cxpos);
+ wxASSERT(cxpos);
+ wxLayoutObjectList::iterator i;
+ CoordType x = 0, cx = 0, width;
+
+ for(i = m_ObjectList.begin(); i != NULLIT; i++)
+ {
+ (**i).Layout(dc);
+ width = (**i).GetWidth();
+ if( x <= xpos && xpos <= x + width )
+ {
+ *cxpos = cx + (**i).GetOffsetScreen(dc, xpos-x);
+ wxLogDebug("wxLayoutLine::FindObjectScreen: cursor xpos = %ld", *cxpos);
+ return i;
+ }
+ x += (**i).GetWidth();
+ cx += (**i).GetLength();
+ }
+ // behind last object:
+ *cxpos = cx;
+ return m_ObjectList.tail();
}
-wxLayoutObjectBase *
-wxLayoutList::Draw(wxDC &dc, bool findObject, wxPoint const &findCoords)
+bool
+wxLayoutLine::Insert(CoordType xpos, wxLayoutObject *obj)
{
- wxLayoutObjectList::iterator i;
+ wxASSERT(xpos >= 0);
+ wxASSERT(obj != NULL);
+ 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;
+ }
- // 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 = (12 * baseLine)/10;
-
- // we trace the objects' cursor positions so we can draw the cursor
- wxPoint cursor = wxPoint(0,0);
- // 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;
-
- VAR(findObject); VAR(findCoords.x); VAR(findCoords.y);
- // 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.SetFont( *wxNORMAL_FONT );
-
- // we calculate everything for drawing a line, then rewind to the
- // begin of line and actually draw it
- i = begin();
- for(;;)
+ 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, wxString text)
+{
+ wxASSERT(xpos >= 0);
+ CoordType offset;
+ wxLOiterator i = FindObject(xpos, &offset);
+ if(i != NULLIT && (**i).GetType() == WXLO_TYPE_TEXT)
{
- recalculate = false;
+ wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
+ tobj->GetText().insert(offset, text);
+ m_Length += text.Length();
- if(i == end())
- break;
- type = (*i)->GetType();
+ return true;
+ }
+ else
+ return Insert(xpos, new wxLayoutObjectText(text));
+}
- // to initialise sizes of objects, we need to call Draw
- (*i)->Draw(dc, position, baseLine, draw);
+CoordType
+wxLayoutLine::Delete(CoordType xpos, CoordType npos)
+{
+ CoordType offset, len;
- // update coordinates for next object:
- size = (*i)->GetSize(&objBaseLine);
- if(findObject && draw) // we need to look for an object
+ wxASSERT(xpos >= 0);
+ wxASSERT(npos >= 0);
+ 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(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
- }
+ 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);
}
- // draw the cursor
- if(m_Editable && draw && i == cursorObject)
+ else
{
- if(type == WXLO_TYPE_TEXT) // special treatment
+ // tidy up: remove empty text objects
+ if((**i).GetLength() == 0)
{
- long descent = 0l; long width, height;
- wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
- wxString str = tobj->GetText();
- VAR(m_CursorPosition.x); VAR(cursor.x);
- str = str.substr(0, cursorOffset);
- VAR(str);
- dc.GetTextExtent(str, &width,&height, &descent);
- VAR(height);
- VAR(width); VAR(descent);
- dc.DrawLine(position.x+width,
- position.y+(baseLineSkip-height),
- position.x+width, position.y+baseLineSkip);
+ m_ObjectList.erase(i);
+ continue;
}
- else
+ // Text object:
+ CoordType max = (**i).GetLength() - offset;
+ if(npos < max) max = npos;
+ if(max == 0)
{
- if(type == WXLO_TYPE_LINEBREAK)
- dc.DrawLine(0, position.y+baseLineSkip, 0, position.y+2*baseLineSkip);
- else
- {
- if(size.x == 0)
- {
- if(size.y == 0)
- dc.DrawLine(position.x, position.y, position.x, position.y+baseLineSkip);
- else
- dc.DrawLine(position.x, position.y, position.x, position.y+size.y);
- }
- else
- dc.DrawRectangle(position.x, position.y, size.x, size.y);
+ 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;
+}
- // calculate next object's position:
- position.x += size.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;
- }
+bool
+wxLayoutLine::DeleteWord(CoordType xpos)
+{
+ wxASSERT(xpos >= 0);
+ CoordType offset;
+
+ wxLOiterator i = FindObject(xpos, &offset);
- // now check whether we have finished handling this line:
- if(type == WXLO_TYPE_LINEBREAK || i == tail())
+ for(;;)
+ {
+ if(i == NULLIT) return false;
+ if((**i).GetType() != WXLO_TYPE_TEXT)
{
- if(recalculate) // do this line again
+ // 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
{
- position.x = position_HeadOfLine.x;
- i = headOfLine;
+ 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;
+ }
+ }
+ wxASSERT(0); // we should never arrive here
+}
- if(! draw) // finished calculating sizes
- { // 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;
- }
+wxLayoutLine *
+wxLayoutLine::DeleteLine(bool update, wxLayoutList *llist)
+{
+ if(m_Next) m_Next->m_Previous = m_Previous;
+ if(m_Previous) m_Previous->m_Next = m_Next;
+ if(update)
+ {
+ m_Next->MoveLines(-1);
+ m_Next->RecalculatePositions(1, llist);
+ }
+ wxLayoutLine *next = m_Next;
+ delete this;
+ return next;
+}
- if(position.x+size.x > m_MaxX)
- m_MaxX = position.x+size.x;
- // is it a linebreak?
- if(type == WXLO_TYPE_LINEBREAK || i == tail())
- {
- position.x = 0;
- position.y += baseLineSkip;
- baseLine = m_FontPtSize;
- baseLineSkip = (12 * baseLine)/10;
- headOfLine = i;
- headOfLine++;
- position_HeadOfLine = position;
- }
- i++;
+void
+wxLayoutLine::Draw(wxDC &dc,
+ wxLayoutList *llist,
+ const wxPoint & offset) const
+{
+ wxLayoutObjectList::iterator i;
+ wxPoint pos = offset;
+ pos = pos + GetPosition();
+
+ pos.y += m_BaseLine;
+
+ for(i = m_ObjectList.begin(); i != NULLIT; i++)
+ {
+ (**i).Draw(dc, pos);
+ pos.x += (**i).GetWidth();
}
- m_MaxY = position.y;
- return foundObject;
}
-#ifdef WXDEBUG
void
-wxLayoutList::Debug(void)
+wxLayoutLine::Layout(wxDC &dc,
+ wxLayoutList *llist,
+ wxPoint *cursorPos,
+ wxPoint *cursorSize,
+ int cx)
{
- CoordType offs;
wxLayoutObjectList::iterator i;
- cerr <<
- "------------------------debug start-------------------------" << endl;
- for(i = begin(); i != end(); i++)
+ CoordType
+ oldHeight = m_Height;
+ CoordType
+ topHeight, bottomHeight; // above and below baseline
+ CoordType
+ objHeight = 0,
+ objTopHeight, objBottomHeight;
+ CoordType
+ len, count = 0;
+ m_Height = 0; m_BaseLine = 0;
+ m_Width = 0;
+ topHeight = 0; bottomHeight = 0;
+ wxPoint size;
+ bool cursorFound = false;
+
+ if(cursorPos)
+ {
+ *cursorPos = m_Position;
+ if(cursorSize) *cursorSize = wxPoint(0,0);
+ }
+
+ for(i = m_ObjectList.begin(); i != NULLIT; i++)
+ {
+ (**i).Layout(dc);
+ size = (**i).GetSize(&objTopHeight, &objBottomHeight);
+
+ if(cursorPos && ! cursorFound)
+ { // we need to check whether the text cursor is here
+ len = (**i).GetLength();
+ if(count <= cx && count+len > cx)
+ {
+ if((**i).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 < (**i).GetLength())
+ str = (*(wxLayoutObjectText*)*i).GetText().substr(len,1);
+ else
+ str = WXLO_CURSORCHAR;
+ dc.GetTextExtent(str, &width, &height, &descent);
+ wxASSERT(cursorSize);
+ // Just in case some joker inserted an empty string object:
+ if(width == 0) width = WXLO_MINIMUM_CURSOR_WIDTH;
+ if(height == 0) height = objHeight;
+ cursorSize->x = width;
+ cursorSize->y = height;
+ cursorFound = true; // no more checks
+ }
+ else
+ { // on some other object
+ CoordType top, bottom; // unused
+ *cursorSize = (**i).GetSize(&top,&bottom);
+ cursorPos->y = m_Position.y;
+ cursorFound = true; // no more checks
+ }
+ }
+ else
+ {
+ count += len;
+ cursorPos->x += (**i).GetWidth();
+ }
+ } // cursor finding
+ objHeight = size.y;
+ m_Width += size.x;
+ if(objHeight > m_Height) m_Height = objHeight;
+ if(objTopHeight > topHeight) topHeight = objTopHeight;
+ if(objBottomHeight > bottomHeight) bottomHeight = objBottomHeight;
+ }
+ if(topHeight + bottomHeight > m_Height) m_Height =
+ topHeight+bottomHeight;
+ m_BaseLine = topHeight;
+
+ if(m_Height == 0)
{
- (*i)->Debug();
- cerr << endl;
+ if(GetPreviousLine()) // empty line
+ {
+ m_Height = GetPreviousLine()->GetHeight();
+ m_BaseLine = GetPreviousLine()->m_BaseLine;
+ }
+ else
+ {
+ CoordType width, height, descent;
+ dc.GetTextExtent(WXLO_CURSORCHAR, &width, &height, &descent);
+ m_Height = height;
+ m_BaseLine = m_Height - descent;
+ }
}
- cerr <<
- "-----------------------debug end----------------------------"
- << endl;
- // show current object:
- cerr << "Cursor: "
- << m_CursorPosition.x << ','
- << m_CursorPosition.y;
+
- i = FindCurrentObject(&offs);
- cerr << " line length: " << GetLineLength(i) << " ";
- if(i == end())
+ // tell next line about coordinate change
+ if(m_Next && objHeight != oldHeight)
+ m_Next->RecalculatePositions(0, llist);
+
+ // We need to check whether we found a valid cursor size:
+ if(cursorPos)
{
- cerr << "<<no object found>>" << endl;
- return; // FIXME we should set cursor position to maximum allowed
- // value then
+ // this might be the case if the cursor is at the end of the
+ // line or on a command object:
+ if(cursorSize->y < WXLO_MINIMUM_CURSOR_WIDTH)
+ {
+ CoordType width, height, descent;
+ dc.GetTextExtent(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;
}
- if((*i)->GetType() == WXLO_TYPE_TEXT)
+}
+
+
+wxLayoutLine *
+wxLayoutLine::Break(CoordType xpos, wxLayoutList *llist)
+{
+ wxASSERT(xpos >= 0);
+
+ if(xpos == 0)
+ { // insert an empty line before this one
+ wxLayoutLine *prev = new wxLayoutLine(m_Previous, llist);
+ if(m_Previous == NULL)
+ { // We were in first line, need to link in new empty line
+ // before this.
+ prev->m_Next = this;
+ m_Previous = prev;
+ m_Previous->m_Height = GetHeight(); // this is a wild guess
+ }
+ MoveLines(+1);
+ if(m_Next)
+ m_Next->RecalculatePositions(1, llist);
+ return this;
+ }
+
+ 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)
{
- cerr << " \"" << ((wxLayoutObjectText *)(*i))->GetText() << "\", offs: "
- << offs << endl;
+ 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
- cerr << ' ' << _t[(*i)->GetType()] << endl;
+ if(offset > 0)
+ i++; // move objects from here to new list
+ while(i != m_ObjectList.end())
+ {
+ newLine->Append(*i);
+ m_Length -= (**i).GetLength();
+ m_ObjectList.remove(i); // remove without deleting it
+ }
+ if(m_Next)
+ m_Next->RecalculatePositions(2, llist);
+ return newLine;
}
-#endif
+
-/******************** editing stuff ********************/
+void
+wxLayoutLine::MergeNextLine(wxLayoutList *llist)
+{
+ wxASSERT(GetNextLine());
+ wxLayoutObjectList &list = GetNextLine()->m_ObjectList;
+ wxLOiterator i;
+
+ for(i = list.begin(); i != list.end();)
+ {
+ Append(*i);
+ list.remove(i); // remove without deleting it
+ }
+ wxASSERT(list.empty());
+ wxLayoutLine *oldnext = GetNextLine();
+ SetNext(GetNextLine()->GetNextLine());
+ delete oldnext;
+ RecalculatePositions(1, llist);
+}
-wxLayoutObjectList::iterator
-wxLayoutList::FindObjectCursor(wxPoint const &cpos, CoordType *offset)
+CoordType
+wxLayoutLine::GetWrapPosition(CoordType column)
{
- wxPoint cursor = wxPoint(0,0); // runs along the objects
- CoordType width;
- wxLayoutObjectList::iterator i;
+ CoordType offset;
+ wxLOiterator i = FindObject(column, &offset);
+ if(i == NULLIT) return -1; // cannot wrap
-#ifdef WXDEBUG
- cerr << "Looking for object at " << cpos.x << ',' << cpos.y <<
- endl;
-#endif
- for(i = begin(); i != end() && cursor.y <= cpos.y; i++)
+ // go backwards through the list and look for space in text objects
+ do
{
- width = 0;
- if((*i)->GetType() == WXLO_TYPE_LINEBREAK)
+ if((**i).GetType() == WXLO_TYPE_TEXT)
{
- if(cpos.y == cursor.y)
+ do
{
- --i;
- if(offset)
- *offset = (*i)->CountPositions();
- return i;
- }
- cursor.x = 0; cursor.y ++;
+ 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
- cursor.x += (width = (*i)->CountPositions());
- if(cursor.y == cpos.y && (cursor.x > cpos.x ||
- ((*i)->GetType() != WXLO_TYPE_CMD && cursor.x == cpos.x))
- ) // found it ?
{
- if(offset)
- *offset = cpos.x-(cursor.x-width); // 0==cursor before
- // the object
-#ifdef WXDEBUG
- cerr << " found object at " << cursor.x-width << ',' <<
- cursor.y << ", type:" << _t[(*i)->GetType()] <<endl;
-#endif
- return i;
+ 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++;
}
-#ifdef WXDEBUG
- cerr << " not found" << endl;
-#endif
- return end(); // not found
+ if(i == NULLIT) return -1; //why should this happen?
+ pos += (**i).GetLength();
+ i++;
+ while(i != NULLIT && (**i).GetType() != WXLO_TYPE_TEXT)
+ {
+ pos += (**i).GetLength();
+ i++;
+ }
+ if(i == NULLIT) return -1; //this is possible, if there is only one text object
+ // now we are at the second text object:
+ pos -= (**i).GetLength();
+ return pos; // in front of it
}
+
-wxLayoutObjectList::iterator
-wxLayoutList::FindCurrentObject(CoordType *offset)
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ The wxLayoutList object
+
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+wxLayoutList::wxLayoutList()
{
- wxLayoutObjectList::iterator obj = end();
+ m_DefaultSetting = NULL;
+ m_FirstLine = NULL;
+ m_ColourFG = *wxBLACK;
+ m_ColourBG = *wxWHITE;
+ InvalidateUpdateRect();
+ Clear();
+}
+
+wxLayoutList::~wxLayoutList()
+{
+ InternalClear();
+ m_FirstLine->DeleteLine(false, this);
+}
- obj = FindObjectCursor(m_CursorPosition, offset);
- if(obj == end()) // not ideal yet
+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_FirstLine = new wxLayoutLine(NULL, this); // empty first line
+ m_CursorLine = m_FirstLine;
+ InvalidateUpdateRect();
+}
+
+
+void
+wxLayoutList::InternalClear(void)
+{
+ Empty();
+ if(m_DefaultSetting)
{
- obj = tail();
- if(obj != end()) // tail really exists
- *offset = (*obj)->CountPositions(); // at the end of it
+ delete m_DefaultSetting;
+ m_DefaultSetting = NULL;
}
- return obj;
}
void
-wxLayoutList::MoveCursor(int dx, int dy)
+wxLayoutList::SetFont(int family, int size, int style, int weight,
+ int underline, wxColour *fg,
+ wxColour *bg)
{
- CoordType offs, lineLength;
- wxLayoutObjectList::iterator i;
+ 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
+ *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();
+
+ // set defaults
+ m_FontPtSize = size;
+ m_FontUnderline = false;
+ m_FontFamily = family;
+ m_FontStyle = style;
+ m_FontWeight = weight;
+ if(fg) m_ColourFG = *fg;
+ if(bg) m_ColourBG = *bg;
+
+ m_ColourFG = *wxBLACK;
+ m_ColourBG = *wxWHITE;
+
+ if(m_DefaultSetting)
+ delete m_DefaultSetting;
+
+ m_DefaultSetting = new
+ wxLayoutObjectCmd(m_FontPtSize,m_FontFamily,m_FontStyle,
+ m_FontWeight,m_FontUnderline,
+ m_ColourFG, m_ColourBG);
+}
+
- 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;
- else if (m_CursorPosition.y > m_MaxLine)
- m_CursorPosition.y = m_MaxLine;
+bool
+wxLayoutList::MoveCursorTo(wxPoint const &p)
+{
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ 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;
+ return true;
+ }
+ else
+ {
+ m_CursorPos.x = len;
+ return false;
+ }
+ }
+ return false;
+}
- while(dx > 0)
+bool
+wxLayoutList::MoveCursorVertically(int n)
+{
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ bool rc;
+ if(n < 0) // move up
{
- i = FindCurrentObject(&offs);
- lineLength = GetLineLength(i);
- if(m_CursorPosition.x < lineLength)
+ if(m_CursorLine == m_FirstLine) return false;
+ while(n < 0 && m_CursorLine)
{
- m_CursorPosition.x ++;
- dx--;
- continue;
+ 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_CursorPosition.y < m_MaxLine)
- {
- m_CursorPosition.y++;
- m_CursorPosition.x = 0;
- dx--;
- }
- else
- break; // cannot move there
+ if(m_CursorPos.x > m_CursorLine->GetLength())
+ m_CursorPos.x = m_CursorLine->GetLength();
+ rc = true;
}
}
- while(dx < 0)
+ else // move down
{
- if(m_CursorPosition.x > 0)
+ wxLayoutLine *last = m_CursorLine;
+ if(! m_CursorLine->GetNextLine()) return false;
+ while(n > 0 && m_CursorLine)
{
- m_CursorPosition.x --;
- dx++;
+ n--;
+ m_CursorPos.y ++;
+ m_CursorLine = m_CursorLine->GetNextLine();
+ }
+ if(! m_CursorLine)
+ {
+ m_CursorLine = last;
+ m_CursorPos.y ++;
+ rc = false;
}
else
{
- if(m_CursorPosition.y > 0)
- {
- m_CursorPosition.y --;
- m_CursorPosition.x = 0;
- i = FindCurrentObject(&offs);
- lineLength = GetLineLength(i);
- m_CursorPosition.x = lineLength;
- dx++;
- continue;
- }
- else
- break; // cannot move left any more
+ if(m_CursorPos.x > m_CursorLine->GetLength())
+ m_CursorPos.x = m_CursorLine->GetLength();
+ rc = true;
}
}
- // final adjustment:
- i = FindCurrentObject(&offs);
- lineLength = GetLineLength(i);
- if(m_CursorPosition.x > lineLength)
- m_CursorPosition.x = lineLength;
-
-#ifdef WXDEBUG
- i = FindCurrentObject(&offs);
- cerr << "Cursor: "
- << m_CursorPosition.x << ','
- << m_CursorPosition.y;
+ return rc;
+}
- if(i == end())
+bool
+wxLayoutList::MoveCursorHorizontally(int n)
+{
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ int move;
+ while(n < 0)
{
- cerr << "<<no object found>>" << endl;
- return; // FIXME we should set cursor position to maximum allowed
- // value then
+ 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;
}
- if((*i)->GetType() == WXLO_TYPE_TEXT)
+
+ while(n > 0)
{
- cerr << " \"" << ((wxLayoutObjectText *)(*i))->GetText() << "\", offs: "
- << offs << endl;
+ 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;
}
- else
- cerr << ' ' << _t[(*i)->GetType()] << endl;
-#endif
+ return n == 0;
}
-void
-wxLayoutList::Delete(CoordType count)
+bool
+wxLayoutList::Insert(wxString const &text)
{
- TRACE(Delete);
+ wxASSERT(m_CursorLine);
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ m_CursorLine->Insert(m_CursorPos.x, text);
+ m_CursorPos.x += text.Length();
+ return true;
+}
- if(!m_Editable)
- return;
+bool
+wxLayoutList::Insert(wxLayoutObject *obj)
+{
+ wxASSERT(m_CursorLine);
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ m_CursorLine->Insert(m_CursorPos.x, obj);
+ m_CursorPos.x += obj->GetLength();
+ return true;
+}
- VAR(count);
+bool
+wxLayoutList::LineBreak(void)
+{
+ wxASSERT(m_CursorLine);
+ bool setFirst = (m_CursorLine == m_FirstLine && m_CursorPos.x == 0);
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ m_CursorLine = m_CursorLine->Break(m_CursorPos.x, this);
+ if(setFirst) // we were at beginning of first line
+ m_FirstLine = m_CursorLine->GetPreviousLine();
+ m_CursorPos.y++;
+ m_CursorPos.x = 0;
+ return true;
+}
- CoordType offs, len;
- wxLayoutObjectList::iterator i;
-
+bool
+wxLayoutList::WrapLine(CoordType column)
+{
+ if(m_CursorPos.x <= column || column < 1)
+ return false; // do nothing yet
+ else
+ {
+ CoordType xpos = m_CursorLine->GetWrapPosition(column);
+ if(xpos == -1)
+ return false; // cannot break line
+ //else:
+ CoordType newpos = m_CursorPos.x - xpos - 1;
+ m_CursorPos.x = xpos;
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ LineBreak();
+ Delete(1); // delete the space
+ m_CursorPos.x = newpos;
+ return true;
+ }
+}
+
+bool
+wxLayoutList::Delete(CoordType npos)
+{
+ wxASSERT(m_CursorLine);
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ CoordType left;
do
{
- i = FindCurrentObject(&offs);
- if(i == end())
- return;
-#ifdef WXDEBUG
- cerr << "trying to delete: " << _t[(*i)->GetType()] << endl;
+ left = m_CursorLine->Delete(m_CursorPos.x, npos);
+ if(left == 0)
+ return true;
+ // 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
- if((*i)->GetType() == WXLO_TYPE_LINEBREAK)
- m_MaxLine--;
- if((*i)->GetType() == WXLO_TYPE_TEXT)
+
+ left--;
+ }
+ else
{
- wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
- 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(offs == len)
- {
- i++;
- if((*i)->GetType() == WXLO_TYPE_TEXT)
- {
- offs = 0; // delete from begin of next string
- tobj = (wxLayoutObjectText *)*i;
- len = tobj->CountPositions();
- }
- else
- {
- erase(i);
- return;
- }
- }
- if(len <= count) // delete this object
- {
- count -= len;
- erase(i);
- }
+ // Need to join next line
+ if(! m_CursorLine->GetNextLine())
+ break; // cannot
else
{
- len = count;
- VAR(offs); VAR(len);
- tobj->GetText().erase(offs,len);
- return; // we are done
+ m_CursorLine->MergeNextLine(this);
+ left--;
}
}
- else // delete the object
- {
- len = (*i)->CountPositions();
- erase(i); // after this, i is the iterator for the following object
- if(count > len)
- count -= len;
- else
- count = 0;
+ }
+ while(left);
+ return left == 0;
+}
+
+int
+wxLayoutList::DeleteLines(int n)
+{
+ wxASSERT(m_CursorLine);
+ wxLayoutLine *line;
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
+ while(n > 0)
+ {
+ if(!m_CursorLine->GetNextLine())
+ { // we cannot delete this line, but we can clear it
+ MoveCursorToBeginOfLine();
+ DeleteToEndOfLine();
+ 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);
}
- while(count && i != end());
+ m_CursorLine->RecalculatePositions(2, this);
+ return n;
}
void
-wxLayoutList::Insert(wxLayoutObjectBase *obj)
+wxLayoutList::Recalculate(wxDC &dc, CoordType bottom)
{
- wxASSERT(obj);
- CoordType offs;
- wxLayoutObjectList::iterator i = FindCurrentObject(&offs);
+ wxLayoutLine *line = m_FirstLine;
- TRACE(Insert(obj));
+ // first, make sure everything is calculated - this might not be
+ // needed, optimise it later
+ m_DefaultSetting->Layout(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();
+ }
+}
- if(i == end())
- push_back(obj);
- else
- {
- // do we have to split a text object?
- if((*i)->GetType() == WXLO_TYPE_TEXT && offs != 0 && offs != (*i)->CountPositions())
- {
- wxLayoutObjectText *tobj = (wxLayoutObjectText *) *i;
-#ifdef WXDEBUG
- cerr << "text: '" << tobj->GetText() << "'" << endl;
- VAR(offs);
-#endif
- wxString left = tobj->GetText().substr(0,offs); // get part before cursor
- VAR(left);
- tobj->GetText() = tobj->GetText().substr(offs,(*i)->CountPositions()-offs); // keeps the right half
- VAR(tobj->GetText());
- insert(i,obj);
- insert(i,new wxLayoutObjectText(left)); // inserts before
- }
+void
+wxLayoutList::UpdateCursorScreenPos(wxDC &dc)
+{
+ wxASSERT(m_CursorLine);
+ m_CursorLine->Layout(dc, this, (wxPoint *)&m_CursorScreenPos, (wxPoint *)&m_CursorSize, m_CursorPos.x);
+}
+
+wxPoint
+wxLayoutList::GetCursorScreenPos(wxDC &dc)
+{
+ UpdateCursorScreenPos(dc);
+ return m_CursorScreenPos;
+}
+
+void
+wxLayoutList::Layout(wxDC &dc, CoordType bottom)
+{
+ wxLayoutLine *line = m_FirstLine;
+
+ // first, make sure everything is calculated - this might not be
+ // needed, optimise it later
+ m_DefaultSetting->Layout(dc);
+ while(line)
+ {
+ if(line == m_CursorLine)
+ line->Layout(dc, this, (wxPoint *)&m_CursorScreenPos, (wxPoint *)&m_CursorSize, m_CursorPos.x);
else
- {
- wxLayoutObjectList::iterator j = i; // we want to apend after this object
- j++;
- if(j != end())
- insert(j, obj);
- else
- push_back(obj);
- }
+ line->Layout(dc, this);
+ // little condition to speed up redrawing:
+ if(bottom != -1 && line->GetPosition().y > bottom) break;
+ line = line->GetNextLine();
}
- m_CursorPosition.x += obj->CountPositions();
- if(obj->GetType() == WXLO_TYPE_LINEBREAK)
- m_MaxLine++;
+
+///FIXME: disabled for now
+#if 0
+ // 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
+ SetUpdateRect(m_CursorScreenPos);
+ SetUpdateRect(m_CursorScreenPos+m_CursorSize);
}
void
-wxLayoutList::Insert(wxString const &text)
+wxLayoutList::Draw(wxDC &dc, wxPoint const &offset,
+ CoordType top, CoordType bottom)
{
- TRACE(Insert(text));
+ wxLayoutLine *line = m_FirstLine;
- if(! m_Editable)
- return;
+ Layout(dc, bottom);
+ m_DefaultSetting->Draw(dc, wxPoint(0,0));
+ wxBrush brush(m_ColourBG, wxSOLID);
+ dc.SetBrush(brush);
+
+ while(line)
+ {
+ // only draw if between top and bottom:
+ if((top == -1 || line->GetPosition().y >= top))
+ line->Draw(dc, this, offset);
+ // little condition to speed up redrawing:
+ if(bottom != -1 && line->GetPosition().y + line->GetHeight() > bottom) break;
+ line = line->GetNextLine();
+ }
+ // 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));
+ InvalidateUpdateRect();
+}
+
+wxLayoutObject *
+wxLayoutList::FindObjectScreen(wxDC &dc, wxPoint const pos, wxPoint *cursorPos)
+{
+ // First, find the right line:
+ wxLayoutLine *line = m_FirstLine;
+ wxPoint p;
+
+ // we need to run a layout here to get font sizes right :-(
+ m_DefaultSetting->Layout(dc);
+ while(line)
+ {
+ p = line->GetPosition();
+ if(p.y <= pos.y && p.y+line->GetHeight() >= pos.y)
+ break;
+ line->Layout(dc, this);
+ line = line->GetNextLine();
+ }
+ if(line == NULL) return NULL; // not found
+ if(cursorPos) cursorPos->y = line->GetLineNumber();
+ // Now, find the object in the line:
+ wxLOiterator i = line->FindObjectScreen(dc, pos.x, & cursorPos->x);
+ return (i == NULLIT) ? NULL : *i;
+
+}
- CoordType offs;
- wxLayoutObjectList::iterator i = FindCurrentObject(&offs);
+wxPoint
+wxLayoutList::GetSize(void) const
+{
+ wxLayoutLine
+ *line = m_FirstLine,
+ *last = line;
+ if(! line)
+ return wxPoint(0,0);
- if(i != end() && (*i)->GetType() == WXLO_TYPE_TEXT)
- { // insert into an existing text object:
- TRACE(inserting into existing object);
- wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
- tobj->GetText().insert(offs,text);
+ 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();
+ return maxPoint;
+}
+
+void
+wxLayoutList::DrawCursor(wxDC &dc, bool active, wxPoint const &translate)
+{
+ wxPoint coords;
+ coords = m_CursorScreenPos;
+ coords.x += translate.x;
+ coords.y += translate.y;
+
+#ifdef WXLAYOUT_DEBUG
+ WXLO_DEBUG(("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()));
+#endif
+
+ dc.SetBrush(*wxBLACK_BRUSH);
+ dc.SetLogicalFunction(wxXOR);
+ dc.SetPen(wxPen(*wxBLACK,1,wxSOLID));
+ if(active)
+ dc.DrawRectangle(coords.x, coords.y, m_CursorSize.x,
+ m_CursorSize.y);
+ else
+ dc.DrawLine(coords.x, coords.y+m_CursorSize.y-1,
+ coords.x+m_CursorSize.x, coords.y+m_CursorSize.y-1);
+ dc.SetLogicalFunction(wxCOPY);
+ //dc.SetBrush(wxNullBrush);
+}
+
+/** Called by the objects to update the update rectangle.
+ @param p a point to include in it
+*/
+void
+wxLayoutList::SetUpdateRect(const wxPoint &p)
+{
+ if(m_UpdateRectValid)
+ GrowRect(m_UpdateRect, p);
else
{
- // check whether the previous object is text:
- wxLayoutObjectList::iterator j = i;
- j--;
- TRACE(checking previous object);
- if(0 && j != end() && (*j)->GetType() == WXLO_TYPE_TEXT)
- {
- wxLayoutObjectText *tobj = (wxLayoutObjectText *)*i;
- tobj->GetText()+=text;
- }
- else // insert a new text object
- {
- TRACE(creating new object);
- Insert(new wxLayoutObjectText(text)); //FIXME not too optimal, slow
- return; // position gets incremented in Insert(obj)
- }
+ m_UpdateRect.x = p.x;
+ m_UpdateRect.y = p.y;
+ m_UpdateRect.width = 4; // large enough to avoid surprises from
+ m_UpdateRect.height = 4;// wxGTK :-)
+ m_UpdateRectValid = true;
}
- m_CursorPosition.x += strlen(text.c_str());
}
-CoordType
-wxLayoutList::GetLineLength(wxLayoutObjectList::iterator i)
+void
+wxLayoutList::StartSelection(void)
{
- if(i == end())
- return 0;
+ wxLogDebug("Starting selection at %ld/%ld", m_CursorPos.x, m_CursorPos.y);
+ m_Selection.m_CursorA = m_CursorPos;
+}
- CoordType len = 0;
+void
+wxLayoutList::EndSelection(void)
+{
+ wxLogDebug("Ending selection at %ld/%ld", m_CursorPos.x, m_CursorPos.y);
+ m_Selection.m_CursorB = m_CursorPos;
+}
- // 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)
+bool
+wxLayoutList::IsSelected(const wxPoint &cursor)
+{
+ return m_Selection.m_CursorA <= cursor
+ && cursor <= m_Selection.m_CursorB;
+}
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+ wxLayoutPrintout
+
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+wxLayoutPrintout::wxLayoutPrintout(wxLayoutList *llist,
+ wxString const & title)
+:wxPrintout(title)
+{
+ m_llist = llist;
+ m_title = title;
+}
+
+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
{
- len += (*i)->CountPositions();
- i++;
+ ppiScreenX = 100;
+ ppiScreenY = 100;
+ }
+ if(ppiPrinterX == 0) // not yet set, need to guess
+ {
+ ppiPrinterX = 72;
+ ppiPrinterY = 72;
}
- return len;
+
+ // 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;
}
-void
-wxLayoutList::Clear(void)
+bool wxLayoutPrintout::OnPrintPage(int page)
{
- wxLayoutObjectList::iterator i = begin();
+ wxDC *dc = GetDC();
- while(i != end()) // == while valid
- erase(i);
+ ScaleDC(dc);
+
+ if (dc)
+ {
+ int top, bottom;
+ top = (page - 1)*m_PrintoutHeight;
+ bottom = top + m_PrintoutHeight;
+ // 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);
+ return true;
+ }
+ else
+ return false;
+}
- // set defaults
- m_FontPtSize = 12;
- m_FontUnderline = false;
- m_FontFamily = wxDEFAULT;
- m_FontStyle = wxNORMAL;
- m_FontWeight = wxNORMAL;
- m_ColourFG = wxTheColourDatabase->FindColour("BLACK");
- m_ColourBG = wxTheColourDatabase->FindColour("WHITE");
-
- m_Position = wxPoint(0,0);
- m_CursorPosition = wxPoint(0,0);
- m_MaxLine = 0;
- m_LineHeight = (12*m_FontPtSize)/10;
- m_MaxX = 0; m_MaxY = 0;
+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. */
+#ifdef __WXMSW__
+ wxPrinterDC psdc("","",WXLLIST_TEMPFILE,false);
+#else
+ wxPostScriptDC psdc(WXLLIST_TEMPFILE,false);
+#endif
+
+ float scale = ScaleDC(&psdc);
+
+ psdc.GetSize(&m_PageWidth, &m_PageHeight);
+ // This sets a left/top origin of 15% and 20%:
+ m_Offset = wxPoint((15*m_PageWidth)/100, m_PageHeight/20);
+
+ // This is the length of the printable area.
+ m_PrintoutHeight = m_PageHeight - (int) (m_PageHeight * 0.15);
+ 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;
+ wxRemoveFile(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
+
+
projects / wxWidgets.git / blobdiff