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40c101af66
wxWidgets/samples/richedit/wxlwindow.cpp
Vadim Zeitlin 40c101af66 1. fatal typo in colour copying in wxStyleInfo ctor fixed 
2. yet slightly better selection handling
3. scrollbars now appear when the window is resized and disappear too
   (it's somewhat strange still...)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2735 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-06-09 22:19:31 +00:00

1155 lines
31 KiB
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/*-*- c++ -*-********************************************************
* wxLwindow.h : a scrolled Window for displaying/entering rich text*
* *
* (C) 1998, 1999 by Karsten Ballüder (Ballueder@usa.net) *
* *
* $Id$
*******************************************************************/
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
# pragma implementation "wxlwindow.h"
#endif
#include "wx/wxprec.h"
#ifdef __BORLANDC__
# pragma hdrstop
#endif
#include "Mpch.h"
#ifdef M_BASEDIR
# ifndef USE_PCH
# include "Mcommon.h"
# include "gui/wxMenuDefs.h"
# include "gui/wxMApp.h"
# endif // USE_PCH
# include "gui/wxlwindow.h"
# include "gui/wxlparser.h"
#else
# ifdef __WXMSW__
# include <wx/msw/private.h>
# endif
# include "wxlwindow.h"
# include "wxlparser.h"
#endif
#include <wx/clipbrd.h>
#include <wx/textctrl.h>
#include <wx/dataobj.h>
#ifdef WXLAYOUT_USE_CARET
# include <wx/caret.h>
#endif // WXLAYOUT_USE_CARET
#include <ctype.h>
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
#ifdef WXLAYOUT_DEBUG
# define WXLO_DEBUG(x) wxLogDebug x
#else
# define WXLO_DEBUG(x)
#endif
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
/// offsets to put a nice frame around text
#define WXLO_XOFFSET 4
#define WXLO_YOFFSET 4
/// offset to the right and bottom for when to redraw scrollbars
#define WXLO_ROFFSET 20
#define WXLO_BOFFSET 20
/// the size of one scrollbar page in pixels
static const int X_SCROLL_PAGE = 10;
static const int Y_SCROLL_PAGE = 20;
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
EVT_SIZE (wxLayoutWindow::OnSize)
EVT_PAINT (wxLayoutWindow::OnPaint)
EVT_CHAR (wxLayoutWindow::OnChar)
EVT_KEY_UP (wxLayoutWindow::OnKeyUp)
EVT_LEFT_DOWN(wxLayoutWindow::OnLeftMouseDown)
EVT_LEFT_UP(wxLayoutWindow::OnLeftMouseUp)
EVT_RIGHT_DOWN(wxLayoutWindow::OnRightMouseClick)
EVT_LEFT_DCLICK(wxLayoutWindow::OnMouseDblClick)
EVT_MOTION (wxLayoutWindow::OnMouseMove)
EVT_UPDATE_UI(WXLOWIN_MENU_UNDERLINE, wxLayoutWindow::OnUpdateMenuUnderline)
EVT_UPDATE_UI(WXLOWIN_MENU_BOLD, wxLayoutWindow::OnUpdateMenuBold)
EVT_UPDATE_UI(WXLOWIN_MENU_ITALICS, wxLayoutWindow::OnUpdateMenuItalic)
EVT_MENU_RANGE(WXLOWIN_MENU_FIRST, WXLOWIN_MENU_LAST, wxLayoutWindow::OnMenu)
EVT_SET_FOCUS(wxLayoutWindow::OnSetFocus)
EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
END_EVENT_TABLE()
// ----------------------------------------------------------------------------
// function prototypes
// ----------------------------------------------------------------------------
/// returns TRUE if keyCode is one of arrows/home/end/page{up|down} keys
static bool IsDirectionKey(long keyCode);
// ============================================================================
// implementation
// ============================================================================
/* LEAVE IT HERE UNTIL WXGTK WORKS AGAIN!!! */
#ifdef __WXGTK__
/// allows me to compare to wxPoints
static bool operator != (wxPoint const &p1, wxPoint const &p2)
{
return p1.x != p2.x || p1.y != p2.y;
}
#endif // __WXGTK__
#ifndef wxWANTS_CHARS
#define wxWANTS_CHARS 0
#endif
// ----------------------------------------------------------------------------
// wxLayoutWindow
// ----------------------------------------------------------------------------
wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
: wxScrolledWindow(parent, -1,
wxDefaultPosition, wxDefaultSize,
wxHSCROLL | wxVSCROLL |
wxBORDER |
wxWANTS_CHARS)
{
SetStatusBar(NULL); // don't use statusbar
m_Editable = false;
m_doSendEvents = false;
m_ViewStartX = 0; m_ViewStartY = 0;
m_DoPopupMenu = true;
m_PopupMenu = MakeFormatMenu();
m_memDC = new wxMemoryDC;
m_bitmap = new wxBitmap(4,4);
m_bitmapSize = wxPoint(4,4);
m_llist = new wxLayoutList();
m_BGbitmap = NULL;
m_ScrollToCursor = false;
SetWrapMargin(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;
// no scrollbars initially (BTW, why then we do all the stuff above?)
m_hasHScrollbar =
m_hasVScrollbar = false;
m_Selecting = false;
#ifdef WXLAYOUT_USE_CARET
// FIXME cursor size shouldn't be hardcoded
wxCaret *caret = new wxCaret(this, 2, 20);
SetCaret(caret);
m_llist->SetCaret(caret);
caret->Show();
#endif // WXLAYOUT_USE_CARET
m_HandCursor = FALSE;
m_CursorVisibility = -1;
SetCursor(wxCURSOR_IBEAM);
SetDirty();
}
wxLayoutWindow::~wxLayoutWindow()
{
delete m_memDC; // deletes bitmap automatically (?)
delete m_bitmap;
delete m_llist;
delete m_PopupMenu;
SetBackgroundBitmap(NULL);
}
void
wxLayoutWindow::Clear(int family,
int size,
int style,
int weight,
int underline,
wxColour *fg,
wxColour *bg)
{
GetLayoutList()->Clear(family,size,style,weight,underline,fg,bg);
SetBackgroundColour(GetLayoutList()->GetDefaultStyleInfo().GetBGColour());
ResizeScrollbars(true);
SetDirty();
SetModified(false);
wxScrolledWindow::Clear();
DoPaint((wxRect *)NULL);
}
void
wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
{
wxClientDC dc( this );
PrepareDC( dc );
if ( eventId != WXLOWIN_MENU_MOUSEMOVE )
{
// moving the mouse in a window shouldn't give it the focus!
SetFocus();
}
wxPoint findPos;
findPos.x = dc.DeviceToLogicalX(event.GetX());
findPos.y = dc.DeviceToLogicalY(event.GetY());
findPos.x -= WXLO_XOFFSET;
findPos.y -= WXLO_YOFFSET;
if(findPos.x < 0)
findPos.x = 0;
if(findPos.y < 0)
findPos.y = 0;
m_ClickPosition = wxPoint(event.GetX(), event.GetY());
wxPoint cursorPos;
bool found;
wxLayoutObject *obj = m_llist->FindObjectScreen(dc, findPos,
&cursorPos, &found);
wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
// has the mouse only been moved?
switch ( eventId )
{
case WXLOWIN_MENU_MOUSEMOVE:
// found is only true if we are really over an object, not just
// behind it
if(found && u && ! m_Selecting)
{
if(!m_HandCursor)
SetCursor(wxCURSOR_HAND);
m_HandCursor = TRUE;
if(m_StatusBar && m_StatusFieldLabel != -1)
{
const wxString &label = u->GetLabel();
if(label.Length())
m_StatusBar->SetStatusText(label,
m_StatusFieldLabel);
}
}
else
{
if(m_HandCursor)
SetCursor(wxCURSOR_IBEAM);
m_HandCursor = FALSE;
if(m_StatusBar && m_StatusFieldLabel != -1)
m_StatusBar->SetStatusText("", m_StatusFieldLabel);
}
// selecting?
if ( event.LeftIsDown() )
{
wxASSERT_MSG( m_Selecting, "should be set in OnMouseLeftDown" );
m_llist->ContinueSelection(cursorPos, m_ClickPosition);
DoPaint(); // TODO: we don't have to redraw everything!
}
if ( u )
{
u->DecRef();
u = NULL;
}
break;
case WXLOWIN_MENU_LDOWN:
{
// always move cursor to mouse click:
m_llist->MoveCursorTo(cursorPos);
// clicking a mouse removes the selection
if ( m_llist->HasSelection() )
{
m_llist->DiscardSelection();
DoPaint(); // TODO: we don't have to redraw everything!
}
// Calculate where the top of the visible area is:
int x0, y0;
ViewStart(&x0,&y0);
int dx, dy;
GetScrollPixelsPerUnit(&dx, &dy);
x0 *= dx; y0 *= dy;
wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
if(m_CursorVisibility == -1)
m_CursorVisibility = 1;
if(m_CursorVisibility != 0)
{
// draw a thick cursor for editable windows with focus
m_llist->DrawCursor(dc, m_HaveFocus && IsEditable(), offset);
}
// VZ: this should be unnecessary because mouse can only click on a
// visible part of the canvas
#if 0
ScrollToCursor();
#endif // 0
#ifdef __WXGTK__
DoPaint(); // DoPaint suppresses flicker under GTK
#endif // wxGTK
// start selection
m_llist->StartSelection(wxPoint(-1, -1), m_ClickPosition);
m_Selecting = true;
}
break;
case WXLOWIN_MENU_LUP:
if ( m_Selecting )
{
m_llist->EndSelection();
m_Selecting = false;
DoPaint(); // TODO: we don't have to redraw everything!
}
break;
case WXLOWIN_MENU_RCLICK:
// remove the selection if mouse click is outside it (TODO)
break;
case WXLOWIN_MENU_DBLCLICK:
// select a word under cursor
m_llist->MoveCursorTo(cursorPos);
m_llist->MoveCursorWord(-1);
m_llist->StartSelection();
m_llist->MoveCursorWord(1, false);
m_llist->EndSelection();
DoPaint(); // TODO: we don't have to redraw everything!
break;
}
// notify about mouse events?
if( m_doSendEvents )
{
// only do the menu if activated, editable and not on a clickable object
if(eventId == WXLOWIN_MENU_RCLICK
&& IsEditable()
&& (! obj || u == NULL))
{
PopupMenu(m_PopupMenu, m_ClickPosition.x, m_ClickPosition.y);
if(u) u->DecRef();
return;
}
// find the object at this position
if(obj)
{
wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, eventId);
commandEvent.SetEventObject( this );
commandEvent.SetClientData((char *)obj);
GetEventHandler()->ProcessEvent(commandEvent);
}
}
if( u )
u->DecRef();
}
// ----------------------------------------------------------------------------
// keyboard handling.
// ----------------------------------------------------------------------------
void
wxLayoutWindow::OnChar(wxKeyEvent& event)
{
int keyCode = event.KeyCode();
#ifdef WXLAYOUT_DEBUG
if(keyCode == WXK_F1)
{
m_llist->Debug();
return;
}
#endif
wxASSERT_MSG( !m_Selecting || event.ShiftDown(),
"m_Selecting is normally reset in OnKeyUp() when Shift "
"goes up!" );
if ( !m_Selecting && m_llist->HasSelection() )
{
// pressing any non-arrow key replaces the selection
if ( !IsDirectionKey(keyCode) )
{
m_llist->DeleteSelection();
}
else if ( !event.ShiftDown() )
{
m_llist->DiscardSelection();
}
}
// <Shift>+<arrow> starts selection
if ( event.ShiftDown() && IsDirectionKey(keyCode) )
{
if ( !m_Selecting )
{
m_Selecting = true;
m_llist->StartSelection();
}
//else: just continue the old selection
}
// If needed, make cursor visible:
if(m_CursorVisibility == -1)
m_CursorVisibility = 1;
/* These two nested switches work like this:
The first one processes all non-editing keycodes, to move the
cursor, etc. It's default will process all keycodes causing
modifications to the buffer, but only if editing is allowed.
*/
bool ctrlDown = event.ControlDown();
switch(keyCode)
{
case WXK_RIGHT:
if ( ctrlDown )
m_llist->MoveCursorWord(1);
else
m_llist->MoveCursorHorizontally(1);
break;
case WXK_LEFT:
if ( ctrlDown )
m_llist->MoveCursorWord(-1);
else
m_llist->MoveCursorHorizontally(-1);
break;
case WXK_UP:
m_llist->MoveCursorVertically(-1);
break;
case WXK_DOWN:
m_llist->MoveCursorVertically(1);
break;
case WXK_PRIOR:
m_llist->MoveCursorVertically(-Y_SCROLL_PAGE);
break;
case WXK_NEXT:
m_llist->MoveCursorVertically(Y_SCROLL_PAGE);
break;
case WXK_HOME:
if ( ctrlDown )
m_llist->MoveCursorTo(wxPoint(0, 0));
else
m_llist->MoveCursorToBeginOfLine();
break;
case WXK_END:
if ( ctrlDown )
m_llist->MoveCursorTo(m_llist->GetSize());
else
m_llist->MoveCursorToEndOfLine();
break;
default:
if(keyCode == 'c' && ctrlDown)
{
// this should work even in read-only mode
Copy();
}
else if( IsEditable() )
{
/* First, handle control keys */
if(event.ControlDown() && ! event.AltDown())
{
switch(keyCode)
{
case WXK_INSERT:
Copy();
break;
case WXK_DELETE :
case 'd':
m_llist->Delete(1);
break;
case 'y':
m_llist->DeleteLines(1);
break;
case 'h': // like backspace
if(m_llist->MoveCursorHorizontally(-1)) m_llist->Delete(1);
break;
case 'u':
m_llist->DeleteToBeginOfLine();
break;
case 'k':
m_llist->DeleteToEndOfLine();
break;
case 'v':
Paste();
break;
case 'x':
Cut();
break;
#ifdef WXLAYOUT_DEBUG
case WXK_F1:
m_llist->SetFont(-1,-1,-1,-1,true); // underlined
break;
#endif
default:
;
}
}
// ALT only:
else if( event.AltDown() && ! event.ControlDown() )
{
switch(keyCode)
{
case WXK_DELETE:
case 'd':
m_llist->DeleteWord();
break;
default:
;
}
}
// no control keys:
else if ( ! event.AltDown() && ! event.ControlDown())
{
switch(keyCode)
{
case WXK_INSERT:
if(event.ShiftDown())
Paste();
break;
case WXK_DELETE :
if(event.ShiftDown())
Cut();
else
m_llist->Delete(1);
break;
case WXK_BACK: // backspace
if(m_llist->MoveCursorHorizontally(-1))
m_llist->Delete(1);
break;
case WXK_RETURN:
if(m_WrapMargin > 0)
m_llist->WrapLine(m_WrapMargin);
m_llist->LineBreak();
break;
default:
if((!(event.ControlDown() || event.AltDown() || event.MetaDown()))
&& (keyCode < 256 && keyCode >= 32)
)
{
if(m_WrapMargin > 0 && isspace(keyCode))
m_llist->WrapLine(m_WrapMargin);
m_llist->Insert((char)keyCode);
}
break;
}
}
SetDirty();
SetModified();
}// if(IsEditable())
}// first switch()
if ( m_Selecting )
{
// continue selection to the current (new) cursor position
m_llist->ContinueSelection();
}
// we must call ResizeScrollbars() before ScrollToCursor(), otherwise the
// ne cursor position might be outside the current scrolllbar range
ResizeScrollbars();
ScrollToCursor();
// refresh the screen
DoPaint(m_llist->GetUpdateRect());
}
void
wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
{
if ( event.KeyCode() == WXK_SHIFT && m_Selecting )
{
m_llist->EndSelection();
m_Selecting = false;
}
event.Skip();
}
void
wxLayoutWindow::ScrollToCursor(void)
{
wxClientDC dc( this );
PrepareDC( dc );
int x0,y0,x1,y1, dx, dy;
// Calculate where the top of the visible area is:
ViewStart(&x0,&y0);
GetScrollPixelsPerUnit(&dx, &dy);
x0 *= dx; y0 *= dy;
WXLO_DEBUG(("ScrollToCursor: ViewStart is %d/%d", x0, y0));
// Get the size of the visible window:
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
// Make sure that the scrollbars are at a position so that the cursor is
// visible if we are editing
WXLO_DEBUG(("m_ScrollToCursor = %d", (int) m_ScrollToCursor));
wxPoint cc = m_llist->GetCursorScreenPos(dc);
// the cursor should be completely visible in both directions
wxPoint cs(m_llist->GetCursorSize());
int nx = -1,
ny = -1;
if ( cc.x < x0 || cc.x >= x0 + x1 - cs.x )
{
nx = cc.x - x1/2;
if ( nx < 0 )
nx = 0;
}
if ( cc.y < y0 || cc.y >= y0 + y1 - cs.y )
{
ny = cc.y - y1/2;
if ( ny < 0)
ny = 0;
}
if ( nx != -1 || ny != -1 )
{
// set new view start
Scroll(nx == -1 ? -1 : (nx+dx-1)/dx, ny == -1 ? -1 : (ny+dy-1)/dy);
// avoid recursion
m_ScrollToCursor = false;
}
}
void
wxLayoutWindow::OnPaint( wxPaintEvent &WXUNUSED(event))
{
wxRect region = GetUpdateRegion().GetBox();
InternalPaint(&region);
}
void
wxLayoutWindow::DoPaint(const wxRect *updateRect)
{
#ifdef __WXGTK__
InternalPaint(updateRect);
#else // Causes bad flicker under wxGTK!!!
Refresh(FALSE); //, updateRect);
if ( !::UpdateWindow(GetHwnd()) )
wxLogLastError("UpdateWindow");
#endif
}
void
wxLayoutWindow::InternalPaint(const wxRect *updateRect)
{
wxPaintDC dc( this );
PrepareDC( dc );
#ifdef WXLAYOUT_USE_CARET
// hide the caret before drawing anything
GetCaret()->Hide();
#endif // WXLAYOUT_USE_CARET
int x0,y0,x1,y1, dx, dy;
// Calculate where the top of the visible area is:
ViewStart(&x0,&y0);
GetScrollPixelsPerUnit(&dx, &dy);
x0 *= dx; y0 *= dy;
// Get the size of the visible window:
GetClientSize(&x1,&y1);
wxASSERT(x1 >= 0);
wxASSERT(y1 >= 0);
if(updateRect)
{
WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
updateRect->x, updateRect->y,
updateRect->x+updateRect->width,
updateRect->y+updateRect->height));
}
if(IsDirty())
{
m_llist->Layout(dc);
ResizeScrollbars();
}
/* Check whether the window has grown, if so, we need to reallocate
the bitmap to be larger. */
if(x1 > m_bitmapSize.x || y1 > m_bitmapSize.y)
{
wxASSERT(m_bitmapSize.x > 0);
wxASSERT(m_bitmapSize.y > 0);
m_memDC->SelectObject(wxNullBitmap);
delete m_bitmap;
m_bitmapSize = wxPoint(x1,y1);
m_bitmap = new wxBitmap(x1,y1);
m_memDC->SelectObject(*m_bitmap);
}
m_memDC->SetDeviceOrigin(0,0);
m_memDC->SetBrush(wxBrush(m_llist->GetDefaultStyleInfo().GetBGColour(),wxSOLID));
m_memDC->SetPen(wxPen(m_llist->GetDefaultStyleInfo().GetBGColour(),
0,wxTRANSPARENT));
m_memDC->SetLogicalFunction(wxCOPY);
m_memDC->Clear();
// fill the background with the background bitmap
if(m_BGbitmap)
{
CoordType
y, x,
w = m_BGbitmap->GetWidth(),
h = m_BGbitmap->GetHeight();
for(y = 0; y < y1; y+=h)
for(x = 0; x < x1; x+=w)
m_memDC->DrawBitmap(*m_BGbitmap, x, y);
m_memDC->SetBackgroundMode(wxTRANSPARENT);
}
// This is the important bit: we tell the list to draw itself
#if WXLO_DEBUG_URECT
if(updateRect)
{
WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
updateRect->x, updateRect->y,
updateRect->x+updateRect->width,
updateRect->y+updateRect->height));
}
#endif
// Device origins on the memDC are suspect, we translate manually
// with the translate parameter of Draw().
wxPoint offset(-x0+WXLO_XOFFSET,-y0+WXLO_YOFFSET);
m_llist->Draw(*m_memDC,offset, y0, y0+y1);
// We start calculating a new update rect before drawing the
// cursor, so that the cursor coordinates get included in the next
// update rectangle (although they are drawn on the memDC, this is
// needed to erase it):
m_llist->InvalidateUpdateRect();
if(m_CursorVisibility != 0)
{
// draw a thick cursor for editable windows with focus
m_llist->DrawCursor(*m_memDC,
m_HaveFocus && IsEditable(),
offset);
}
// Now copy everything to the screen:
#if 0
// This somehow doesn't work, but even the following bit with the
// whole rect at once is still a bit broken I think.
wxRegionIterator ri ( GetUpdateRegion() );
if(ri)
while(ri)
{
WXLO_DEBUG(("UpdateRegion: %ld,%ld, %ld,%ld",
ri.GetX(),ri.GetY(),ri.GetW(),ri.GetH()));
dc.Blit(x0+ri.GetX(),y0+ri.GetY(),ri.GetW(),ri.GetH(),
m_memDC,ri.GetX(),ri.GetY(),wxCOPY,FALSE);
ri++;
}
else
#endif
{
// FIXME: Trying to copy only the changed parts, but it does not seem
// to work:
// x0 = updateRect->x; y0 = updateRect->y;
// if(updateRect->height < y1)
// y1 = updateRect->height;
// y1 += WXLO_YOFFSET; //FIXME might not be needed
dc.Blit(x0,y0,x1,y1,m_memDC,0,0,wxCOPY,FALSE);
}
#ifdef WXLAYOUT_USE_CARET
// show the caret back after everything is redrawn
m_caret->Show();
#endif // WXLAYOUT_USE_CARET
ResetDirty();
m_ScrollToCursor = false;
if ( m_StatusBar && m_StatusFieldCursor != -1 )
{
static wxPoint s_oldCursorPos(-1, -1);
wxPoint pos(m_llist->GetCursorPos());
// avoid unnecessary status bar refreshes
if ( pos != s_oldCursorPos )
{
s_oldCursorPos = pos;
wxString label;
label.Printf(_("Ln:%d Col:%d"), pos.y + 1, pos.x + 1);
m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
}
}
}
void
wxLayoutWindow::OnSize(wxSizeEvent &event)
{
ResizeScrollbars();
event.Skip();
}
// change the range and position of scrollbars
void
wxLayoutWindow::ResizeScrollbars(bool exact)
{
wxPoint max = m_llist->GetSize();
wxSize size = GetClientSize();
WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
(long int)max.x, (long int) max.y));
// in the absence of scrollbars we should compare with the client size
if ( !m_hasHScrollbar )
m_maxx = size.x - WXLO_ROFFSET;
if ( !m_hasVScrollbar )
m_maxy = size.y - WXLO_BOFFSET;
// check if the text hasn't become too big
// TODO why do we set both at once? they're independent...
if( max.x > m_maxx - WXLO_ROFFSET || max.y > m_maxy - WXLO_BOFFSET || exact )
{
// text became too large
if ( !exact )
{
// add an extra bit to the sizes to avoid future updates
max.x += WXLO_ROFFSET;
max.y += WXLO_BOFFSET;
}
ViewStart(&m_ViewStartX, &m_ViewStartY);
SetScrollbars(X_SCROLL_PAGE, Y_SCROLL_PAGE,
max.x / X_SCROLL_PAGE + 1, max.y / Y_SCROLL_PAGE + 1,
m_ViewStartX, m_ViewStartY,
true);
m_hasHScrollbar =
m_hasVScrollbar = true;
m_maxx = max.x + X_SCROLL_PAGE;
m_maxy = max.y + Y_SCROLL_PAGE;
}
else
{
// check if the window hasn't become too big, thus making the scrollbars
// unnecessary
if ( m_hasHScrollbar && (max.x < size.x) )
{
// remove the horizontal scrollbar
SetScrollbars(0, -1, 0, -1, 0, -1, true);
m_hasHScrollbar = false;
}
if ( m_hasVScrollbar && (max.y < size.y) )
{
// remove the vertical scrollbar
SetScrollbars(-1, 0, -1, 0, -1, 0, true);
m_hasVScrollbar = false;
}
}
}
// ----------------------------------------------------------------------------
// clipboard operations
// ----------------------------------------------------------------------------
void
wxLayoutWindow::Paste(void)
{
// Read some text
if (wxTheClipboard->Open())
{
#if wxUSE_PRIVATE_CLIPBOARD_FORMAT
wxLayoutDataObject wxldo;
if (wxTheClipboard->IsSupported( wxldo.GetFormat() ))
{
wxTheClipboard->GetData(&wxldo);
{
}
//FIXME: missing functionality m_llist->Insert(wxldo.GetList());
}
else
#endif
{
wxTextDataObject data;
if (wxTheClipboard->IsSupported( data.GetFormat() ))
{
wxTheClipboard->GetData(&data);
wxString text = data.GetText();
wxLayoutImportText( m_llist, text);
}
}
wxTheClipboard->Close();
}
#if 0
/* My attempt to get the primary selection, but it does not
work. :-( */
if(text.Length() == 0)
{
wxTextCtrl tmp_tctrl(this,-1);
tmp_tctrl.Paste();
text += tmp_tctrl.GetValue();
}
#endif
}
bool
wxLayoutWindow::Copy(bool invalidate)
{
// Calling GetSelection() will automatically do an EndSelection()
// on the list, but we need to take a note of it, too:
if(m_Selecting)
{
m_Selecting = false;
m_llist->EndSelection();
}
wxLayoutDataObject wldo;
wxLayoutList *llist = m_llist->GetSelection(&wldo, invalidate);
if(! llist)
return FALSE;
// Export selection as text:
wxString text;
wxLayoutExportObject *export;
wxLayoutExportStatus status(llist);
while((export = wxLayoutExport( &status, WXLO_EXPORT_AS_TEXT)) != NULL)
{
if(export->type == WXLO_EXPORT_TEXT)
text << *(export->content.text);
delete export;
}
delete llist;
// The exporter always appends a newline, so we chop it off if it
// is there:
{
size_t len = text.Length();
if(len > 2 && text[len-2] == '\r') // Windows
text = text.Mid(0,len-2);
else if(len > 1 && text[len-1] == '\n')
text = text.Mid(0,len-1);
}
if (wxTheClipboard->Open())
{
wxTextDataObject *data = new wxTextDataObject( text );
bool rc = wxTheClipboard->SetData( data );
#if wxUSE_PRIVATE_CLIPBOARD_FORMAT
rc |= wxTheClipboard->AddData( &wldo );
#endif
wxTheClipboard->Close();
return rc;
}
return FALSE;
}
bool
wxLayoutWindow::Cut(void)
{
if(Copy(false)) // do not invalidate selection after copy
{
m_llist->DeleteSelection();
return TRUE;
}
else
return FALSE;
}
// ----------------------------------------------------------------------------
// searching
// ----------------------------------------------------------------------------
bool
wxLayoutWindow::Find(const wxString &needle,
wxPoint * fromWhere)
{
wxPoint found;
if(fromWhere == NULL)
found = m_llist->FindText(needle, m_llist->GetCursorPos());
else
found = m_llist->FindText(needle, *fromWhere);
if(found.x != -1)
{
if(fromWhere)
{
*fromWhere = found;
fromWhere->x ++;
}
m_llist->MoveCursorTo(found);
ScrollToCursor();
return true;
}
return false;
}
// ----------------------------------------------------------------------------
// popup menu stuff
// ----------------------------------------------------------------------------
wxMenu *
wxLayoutWindow::MakeFormatMenu()
{
wxMenu *m = new wxMenu(_("Layout Menu"));
m->Append(WXLOWIN_MENU_LARGER ,_("&Larger"),_("Switch to larger font."), false);
m->Append(WXLOWIN_MENU_SMALLER ,_("&Smaller"),_("Switch to smaller font."), false);
m->AppendSeparator();
m->Append(WXLOWIN_MENU_UNDERLINE, _("&Underline"),_("Underline mode."), true);
m->Append(WXLOWIN_MENU_BOLD, _("&Bold"),_("Bold mode."), true);
m->Append(WXLOWIN_MENU_ITALICS, _("&Italics"),_("Italics mode."), true);
m->AppendSeparator();
m->Append(WXLOWIN_MENU_ROMAN ,_("&Roman"),_("Switch to roman font."), false);
m->Append(WXLOWIN_MENU_TYPEWRITER,_("&Typewriter"),_("Switch to typewriter font."), false);
m->Append(WXLOWIN_MENU_SANSSERIF ,_("&Sans Serif"),_("Switch to sans serif font."), false);
return m;
}
void wxLayoutWindow::OnUpdateMenuUnderline(wxUpdateUIEvent& event)
{
event.Check(m_llist->IsFontUnderlined());
}
void wxLayoutWindow::OnUpdateMenuBold(wxUpdateUIEvent& event)
{
event.Check(m_llist->IsFontBold());
}
void wxLayoutWindow::OnUpdateMenuItalic(wxUpdateUIEvent& event)
{
event.Check(m_llist->IsFontItalic());
}
void wxLayoutWindow::OnMenu(wxCommandEvent& event)
{
switch (event.GetId())
{
case WXLOWIN_MENU_LARGER:
m_llist->SetFontLarger();
break;
case WXLOWIN_MENU_SMALLER:
m_llist->SetFontSmaller();
break;
case WXLOWIN_MENU_UNDERLINE:
m_llist->ToggleFontUnderline();
break;
case WXLOWIN_MENU_BOLD:
m_llist->ToggleFontWeight();
break;
case WXLOWIN_MENU_ITALICS:
m_llist->ToggleFontItalics();
break;
case WXLOWIN_MENU_ROMAN:
m_llist->SetFontFamily(wxROMAN); break;
case WXLOWIN_MENU_TYPEWRITER:
m_llist->SetFontFamily(wxFIXED); break;
case WXLOWIN_MENU_SANSSERIF:
m_llist->SetFontFamily(wxSWISS); break;
}
}
// ----------------------------------------------------------------------------
// focus
// ----------------------------------------------------------------------------
void
wxLayoutWindow::OnSetFocus(wxFocusEvent &ev)
{
m_HaveFocus = true;
ev.Skip();
}
void
wxLayoutWindow::OnKillFocus(wxFocusEvent &ev)
{
m_HaveFocus = false;
ev.Skip();
}
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
static bool IsDirectionKey(long keyCode)
{
switch(keyCode)
{
case WXK_UP:
case WXK_DOWN:
case WXK_RIGHT:
case WXK_LEFT:
case WXK_PRIOR:
case WXK_NEXT:
case WXK_HOME:
case WXK_END:
return true;
default:
return false;
}
}
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