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1. crash when deleting multi line selection fixed

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2. BreakLine() does just discard the first line (wreaking total havoc) any
   more
3. ScrollToCursor() actually scrolls to cursor
4. style change affects the first line too - and since the first time, style
   doesn't change mysteriously any more after second Clear()
5. word cursor movement even better (did I get it right this time?)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2766 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-06-12 21:07:44 +00:00
parent 6b92f831b7
commit 668e4f17be
6 changed files with 200 additions and 94 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
samples/richedit/wxLayout.cpp
View File

@@ -33,19 +33,22 @@ IMPLEMENT_APP(MyApp)
// MyFrame
//-----------------------------------------------------------------------------
enum ids{ ID_ADD_SAMPLE = 1, ID_CLEAR, ID_PRINT,
ID_PRINT_SETUP, ID_PAGE_SETUP, ID_PREVIEW, ID_PRINT_PS,
ID_PRINT_SETUP_PS, ID_PAGE_SETUP_PS,ID_PREVIEW_PS,
ID_WRAP, ID_NOWRAP, ID_PASTE, ID_COPY, ID_CUT,
ID_PASTE_PRIMARY,
ID_FIND,
ID_WXLAYOUT_DEBUG, ID_QUIT, ID_CLICK, ID_HTML, ID_TEXT,
ID_TEST, ID_LINEBREAKS_TEST, ID_LONG_TEST, ID_URL_TEST };
enum ids
{
ID_ADD_SAMPLE = 1, ID_CLEAR, ID_PRINT,
ID_PRINT_SETUP, ID_PAGE_SETUP, ID_PREVIEW, ID_PRINT_PS,
ID_PRINT_SETUP_PS, ID_PAGE_SETUP_PS,ID_PREVIEW_PS,
ID_WRAP, ID_NOWRAP, ID_PASTE, ID_COPY, ID_CUT,
ID_PASTE_PRIMARY,
ID_FIND,
ID_WXLAYOUT_DEBUG, ID_QUIT, ID_CLICK, ID_HTML, ID_TEXT,
ID_TEST, ID_LINEBREAKS_TEST, ID_LONG_TEST, ID_URL_TEST
};
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
BEGIN_EVENT_TABLE(MyFrame,wxFrame)
BEGIN_EVENT_TABLE(MyFrame,wxFrame)
EVT_MENU(ID_PRINT, MyFrame::OnPrint)
EVT_MENU(ID_PREVIEW, MyFrame::OnPrintPreview)
EVT_MENU(ID_PRINT_SETUP, MyFrame::OnPrintSetup)
@@ -57,7 +60,7 @@ IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
EVT_MENU (-1, MyFrame::OnCommand)
EVT_COMMAND (-1,-1, MyFrame::OnCommand)
EVT_CHAR ( wxLayoutWindow::OnChar )
END_EVENT_TABLE()
END_EVENT_TABLE()
MyFrame::MyFrame(void) :
@@ -119,8 +122,8 @@ MyFrame::MyFrame(void) :
m_lwin->SetMouseTracking(true);
m_lwin->SetEditable(true);
m_lwin->SetWrapMargin(40);
m_lwin->Clear(wxROMAN,16,wxNORMAL,wxNORMAL, false);
m_lwin->SetFocus();
Clear();
// create and set the background bitmap (this will result in a lattice)
static const int sizeBmp = 10;

177
samples/richedit/wxllist.cpp
View File

@@ -622,20 +622,25 @@ wxLayoutObjectCmd::Layout(wxDC &dc, class wxLayoutList * llist)
wxLayoutLine::wxLayoutLine(wxLayoutLine *prev, wxLayoutList *llist)
{
m_LineNumber = 0;
m_Width = m_Height = 0;
m_Length = 0;
m_updateLeft = -1;
MarkDirty(0);
m_Previous = prev;
m_Next = NULL;
m_LineNumber = 0;
RecalculatePosition(llist);
if(m_Previous)
{
m_LineNumber = m_Previous->GetLineNumber()+1;
m_LineNumber = m_Previous->GetLineNumber() + 1;
m_Next = m_Previous->GetNextLine();
m_Previous->m_Next = this;
}
if(m_Next)
{
m_Next->m_Previous = this;
@@ -736,30 +741,45 @@ wxLayoutLine::FindObject(CoordType xpos, CoordType *offset) const
}
wxLayoutObjectList::iterator
wxLayoutLine::FindObjectScreen(wxDC &dc,
wxLayoutLine::FindObjectScreen(wxDC &dc, wxLayoutList *llist,
CoordType xpos, CoordType *cxpos,
bool *found) const
{
wxASSERT(cxpos);
wxASSERT(cxpos);
llist->ApplyStyle(GetStyleInfo(), dc);
wxLayoutObjectList::iterator i;
CoordType x = 0, cx = 0, width;
for(i = m_ObjectList.begin(); i != NULLIT; i++)
{
width = (**i).GetWidth();
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 + (**i).GetOffsetScreen(dc, xpos-x);
if(found) *found = true;
*cxpos = cx + obj->GetOffsetScreen(dc, xpos-x);
if ( found )
*found = true;
return i;
}
x += (**i).GetWidth();
cx += (**i).GetLength();
x += obj->GetWidth();
cx += obj->GetLength();
}
// behind last object:
*cxpos = cx;
if(found) *found = false;
if (found)
*found = false;
return m_ObjectList.tail();
}
@@ -1012,10 +1032,18 @@ wxLayoutLine::DeleteLine(bool update, wxLayoutList *llist)
if(m_Previous)
m_Previous->m_Next = m_Next;
wxLayoutLine *next = m_Next;
if ( next )
{
// get the line numbers right again
next->MoveLines(-1);
}
if(update)
{
m_Next->MoveLines(-1);
m_Next->RecalculatePositions(1, llist);
if ( next )
next->RecalculatePositions(1, llist);
/* We assume that if we have more than one object in the list,
this means that we have a command object, so we need to
update the following lines. */
@@ -1025,7 +1053,7 @@ wxLayoutLine::DeleteLine(bool update, wxLayoutList *llist)
)
MarkNextDirty(-1);
}
wxLayoutLine *next = m_Next;
delete this;
llist->DecNumLines();
@@ -1367,6 +1395,8 @@ wxLayoutLine::MergeNextLine(wxLayoutList *llist)
#endif // 0
}
llist->DecNumLines();
delete oldnext;
}
@@ -1531,6 +1561,7 @@ wxLayoutList::wxLayoutList()
wxLayoutList::~wxLayoutList()
{
InternalClear();
Empty();
m_FirstLine->DeleteLine(false, this);
wxASSERT_MSG( m_numLines == 0, "line count calculation broken" );
@@ -1555,7 +1586,6 @@ wxLayoutList::Empty(void)
void
wxLayoutList::InternalClear(void)
{
Empty();
m_Selection.m_selecting = false;
m_Selection.m_valid = false;
@@ -1620,6 +1650,11 @@ wxLayoutList::Clear(int family, int size, int style, int weight,
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
@@ -1787,14 +1822,51 @@ wxLayoutList::MoveCursorWord(int n, bool untilNext)
CoordType moveDistance = 0;
CoordType offset;
for ( wxLOiterator i = m_CursorLine->FindObject(m_CursorPos.x, &offset);
wxLayoutLine *lineCur = m_CursorLine;
for ( wxLOiterator i = lineCur->FindObject(m_CursorPos.x, &offset);
n != 0;
n > 0 ? i++ : i-- )
{
if ( i == NULLIT )
return false;
{
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;
}
}
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
@@ -1817,9 +1889,11 @@ wxLayoutList::MoveCursorWord(int n, bool untilNext)
if ( n > 0 )
{
// can't move further in this text object
n--;
canAdvance = false;
// still should move over the object border
moveDistance++;
n--;
}
else if ( offset > 0 )
{
@@ -1871,14 +1945,26 @@ wxLayoutList::MoveCursorWord(int n, bool untilNext)
}
}
n > 0 ? n-- : n++;
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--;
}
moveDistance = p - start - offset;
if ( moveDelta != 0 )
{
moveDistance += moveDelta;
n > 0 ? n-- : n++;
}
}
}
// except for the first iteration, offset is 0
offset = 0;
// except for the first iteration, offset is calculated in the beginning
// of the loop
offset = -1;
}
MoveCursorHorizontally(moveDistance);
@@ -1952,7 +2038,6 @@ bool
wxLayoutList::LineBreak(void)
{
wxASSERT(m_CursorLine);
bool setFirst = (m_CursorLine == m_FirstLine && m_CursorPos.x == 0);
AddCursorPosToUpdateRect();
@@ -1963,14 +2048,9 @@ wxLayoutList::LineBreak(void)
height = m_CursorLine->GetHeight();
m_CursorLine = m_CursorLine->Break(m_CursorPos.x, this);
if(setFirst) // we were at beginning of first line
m_FirstLine = m_CursorLine;
wxASSERT(m_FirstLine);
if(m_CursorPos.x != 0)
m_CursorPos.y++;
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 =
@@ -2321,8 +2401,8 @@ wxLayoutList::FindObjectScreen(wxDC &dc, wxPoint const pos,
cursorPos->y = line->GetLineNumber();
// Now, find the object in the line:
ApplyStyle(line->GetStyleInfo(), dc);
wxLOiterator i = line->FindObjectScreen(dc, pos.x,
wxLOiterator i = line->FindObjectScreen(dc, this,
pos.x,
cursorPos ? &cursorPos->x : NULL,
found);
return (i == NULLIT) ? NULL : *i;
@@ -2575,44 +2655,29 @@ wxLayoutList::DeleteSelection(void)
return;
}
// We now know that the two lines are different:
wxLayoutLine
* firstLine = NULL,
* lastLine = NULL;
for(firstLine = m_FirstLine;
firstLine && firstLine->GetLineNumber() < m_Selection.m_CursorA.y;
firstLine=firstLine->GetNextLine())
;
if(!firstLine || firstLine->GetLineNumber() != m_Selection.m_CursorA.y)
return;
for(lastLine = m_FirstLine;
lastLine && lastLine->GetLineNumber() < m_Selection.m_CursorB.y;
lastLine=lastLine->GetNextLine())
;
if(!lastLine || lastLine->GetLineNumber() != m_Selection.m_CursorB.y)
return;
// We now know that the two lines are different:
* firstLine = GetLine(m_Selection.m_CursorA.y),
* lastLine = GetLine(m_Selection.m_CursorB.y);
// First, delete what's left of this line:
MoveCursorTo(m_Selection.m_CursorA);
DeleteToEndOfLine();
wxLayoutLine *nextLine = firstLine->GetNextLine();
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
Delete(m_Selection.m_CursorB.x); // This deletes the first x positions
/// Recalculate:
firstLine->RecalculatePositions(1, this);
// 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->RecalculatePositions(1, this);
}
/// Starts highlighting the selection

38
samples/richedit/wxllist.h
View File

@@ -520,12 +520,14 @@ public:
/** Finds the object which covers the screen position xpos in this
line.
@param dc the wxDC to use for calculations
@param llist the layout list to which this line belongs
@param xpos the screen x coordinate
@param offset where to store the difference between xpos and
the object's head
@return iterator to the object or NULLIT
*/
wxLayoutObjectList::iterator FindObjectScreen(wxDC &dc,
wxLayoutList *llist,
CoordType xpos,
CoordType *offset,
bool *found = NULL) const ;
@@ -541,11 +543,18 @@ public:
functions to export the list.
@return iterator to the first object
*/
wxLayoutObjectList::iterator GetFirstObject(void)
wxLayoutObjectList::iterator GetFirstObject(void) const
{
return m_ObjectList.begin();
}
/** Get the last object in the list.
*/
wxLayoutObjectList::iterator GetLastObject(void) const
{
return m_ObjectList.tail();
}
/** Deletes this line, returns pointer to next line.
@param update If true, update all following lines.
*/
@@ -600,13 +609,14 @@ public:
for that position
@return pointer to the object
*/
wxLayoutObject * FindObjectScreen(wxDC &dc, CoordType xpos, bool
*found = NULL);
wxLayoutObject * FindObjectScreen(wxDC &dc,
CoordType xpos,
bool *found = NULL);
/** This sets the style info for the beginning of this line.
@param si styleinfo structure
*/
void ApplyStyle(const wxLayoutStyleInfo &si)
{ m_StyleInfo = si; }
{ m_StyleInfo = si; }
//@}
@@ -1123,6 +1133,26 @@ public:
void IncNumLines() { m_numLines++; }
void DecNumLines() { m_numLines--; }
/// get the line by number
wxLayoutLine *GetLine(CoordType index) const
{
wxASSERT_MSG( (0 <= index) && (index < (CoordType)m_numLines),
"invalid index" );
wxLayoutLine *line;
CoordType n = index;
for ( line = m_FirstLine; line && n-- > 0; line = line->GetNextLine() )
;
if ( line )
{
// should be the right one
wxASSERT( line->GetLineNumber() == index );
}
return line;
}
private:
/// Clear the list.
void InternalClear(void);

9
samples/richedit/wxlparser.cpp
View File

@@ -41,10 +41,9 @@ void wxLayoutImportText(wxLayoutList *list, wxString const &str)
if ( !str )
return;
// we change the string temporarily inside this function
wxString& s = (wxString &)str; // const_cast
char * cptr = s.GetWriteBuf(s.Len());
// we change the string only temporarily inside this function
// VZ: I still don't like it... the string data may be shared...
char * cptr = (char *)str.c_str(); // const_cast
const char * begin = cptr;
char backup;
@@ -70,8 +69,6 @@ void wxLayoutImportText(wxLayoutList *list, wxString const &str)
break;
cptr++;
}
s.UngetWriteBuf();
}
static

43
samples/richedit/wxlwindow.cpp
View File

@@ -140,7 +140,8 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
wxDefaultPosition, wxDefaultSize,
wxHSCROLL | wxVSCROLL |
wxBORDER |
wxWANTS_CHARS)
wxWANTS_CHARS),
m_llist(NULL)
{
SetStatusBar(NULL); // don't use statusbar
m_Editable = false;
@@ -156,14 +157,18 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
m_BGbitmap = NULL;
m_ScrollToCursor = false;
SetWrapMargin(0);
// initially the list is empty, so why would we need the scrollbars?
#if 0
wxPoint max = m_llist->GetSize();
SetScrollbars(X_SCROLL_PAGE, Y_SCROLL_PAGE,
max.x / X_SCROLL_PAGE + 1, max.y / Y_SCROLL_PAGE + 1);
EnableScrolling(true, true);
m_maxx = max.x + X_SCROLL_PAGE;
m_maxy = max.y + Y_SCROLL_PAGE;
#endif // 0
// no scrollbars initially (BTW, why then we do all the stuff above?)
// no scrollbars initially
m_hasHScrollbar =
m_hasVScrollbar = false;
@@ -579,6 +584,18 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
m_llist->WrapLine(m_WrapMargin);
m_llist->LineBreak();
break;
case WXK_TAB:
{
// TODO should be configurable
static const int tabSize = 8;
CoordType x = m_llist->GetCursorPos().x;
size_t numSpaces = tabSize - x % tabSize;
m_llist->Insert(wxString(' ', numSpaces));
}
break;
default:
if((!(event.ControlDown() || event.AltDown() || event.MetaDown()))
&& (keyCode < 256 && keyCode >= 32)
@@ -640,19 +657,10 @@ wxLayoutWindow::ScrollToCursor(void)
WXLO_DEBUG(("ScrollToCursor: ViewStart is %d/%d", x0, y0));
// Get the size of the visible window:
GetClientSize(&x1,&y1);
GetClientSize(&x1, &y1);
// notice that the client size may be (0, 0)...
wxASSERT(x1 >= 0 && y1 >= 0);
// VZ: I think this is false - if you do it here, ResizeScrollbars() won't
// call SetScrollbars() later
#if 0
// As we have the values anyway, use them to avoid unnecessary scrollbar
// updates.
if(x1 > m_maxx) m_maxx = x1;
if(y1 > m_maxy) m_maxy = y1;
#endif // 0
// update the cursor screen position
m_llist->Layout(dc);
// Make sure that the scrollbars are at a position so that the cursor is
// visible if we are editing
@@ -860,9 +868,12 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
void
wxLayoutWindow::OnSize(wxSizeEvent &event)
{
ResizeScrollbars();
if ( m_llist )
{
ResizeScrollbars();
}
event.Skip();
event.Skip();
}
// change the range and position of scrollbars

2
samples/richedit/wxlwindow.h
View File

@@ -23,7 +23,7 @@
#endif
#define wxUSE_PRIVATE_CLIPBOARD_FORMAT 1
#define wxUSE_PRIVATE_CLIPBOARD_FORMAT 0
enum
{