+ // FIXME: this is pure guesswork, need to retrieve the real button margins
+ wxSize sizeBtn = sizeLabel;
+
+ sizeBtn.x += 3*win->GetCharWidth();
+ sizeBtn.y = 11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(sizeLabel.y)/10;
+
+ // account for the shield UAC icon if we have it
+ if ( flags & Size_AuthNeeded )
+ sizeBtn.x += wxSystemSettings::GetMetric(wxSYS_SMALLICON_X);
+
+ return sizeBtn;
+}
+
+wxSize wxMSWButton::ComputeBestSize(wxControl *btn, int flags)
+{
+ wxClientDC dc(btn);
+
+ wxSize sizeBtn;
+ dc.GetMultiLineTextExtent(btn->GetLabelText(), &sizeBtn.x, &sizeBtn.y);
+
+ sizeBtn = GetFittingSize(btn, sizeBtn, flags);
+
+ // all buttons have at least the standard size unless the user explicitly
+ // wants them to be of smaller size and used wxBU_EXACTFIT style when
+ // creating the button
+ if ( !btn->HasFlag(wxBU_EXACTFIT) )
+ {
+ // The size of a standard button in the dialog units is 50x14, use it.
+ // Note that we intentionally don't use GetDefaultSize() here, because
+ // it's inexact -- dialog units depend on this dialog's font.
+ wxSize sizeDef = btn->ConvertDialogToPixels(wxSize(50, 14));
+ if ( sizeBtn.x < sizeDef.x )
+ sizeBtn.x = sizeDef.x;
+ if ( sizeBtn.y < sizeDef.y )
+ sizeBtn.y = sizeDef.y;
+ }
+
+ btn->CacheBestSize(sizeBtn);
+
+ return sizeBtn;
+}
+
+// ----------------------------------------------------------------------------
+// creation/destruction
+// ----------------------------------------------------------------------------
+
+bool wxButton::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxString& lbl,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxValidator& validator,
+ const wxString& name)
+{
+ m_authNeeded = false;
+
+ wxString label(lbl);
+ if (label.empty() && wxIsStockID(id))
+ {
+ // On Windows, some buttons aren't supposed to have mnemonics
+ label = wxGetStockLabel
+ (
+ id,
+ id == wxID_OK || id == wxID_CANCEL || id == wxID_CLOSE
+ ? wxSTOCK_NOFLAGS
+ : wxSTOCK_WITH_MNEMONIC
+ );
+ }
+
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return false;
+
+ WXDWORD exstyle;
+ WXDWORD msStyle = MSWGetStyle(style, &exstyle);
+
+ // if the label contains several lines we must explicitly tell the button
+ // about it or it wouldn't draw it correctly ("\n"s would just appear as
+ // black boxes)
+ //
+ // NB: we do it here and not in MSWGetStyle() because we need the label
+ // value and the label is not set yet when MSWGetStyle() is called
+ msStyle |= wxMSWButton::GetMultilineStyle(label);
+
+ return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle);
+}
+
+wxButton::~wxButton()
+{
+ wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+ if ( tlw && tlw->GetTmpDefaultItem() == this )
+ {
+ UnsetTmpDefault();
+ }
+
+ delete m_imageData;
+}
+
+// ----------------------------------------------------------------------------
+// flags
+// ----------------------------------------------------------------------------
+
+WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+ // buttons never have an external border, they draw their own one
+ WXDWORD msStyle = wxControl::MSWGetStyle
+ (
+ (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
+ );
+
+ // we must use WS_CLIPSIBLINGS with the buttons or they would draw over
+ // each other in any resizeable dialog which has more than one button in
+ // the bottom
+ msStyle |= WS_CLIPSIBLINGS;
+
+ // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT
+ // and wxBU_RIGHT to get BS_CENTER!
+ if ( style & wxBU_LEFT )
+ msStyle |= BS_LEFT;
+ if ( style & wxBU_RIGHT )
+ msStyle |= BS_RIGHT;
+ if ( style & wxBU_TOP )
+ msStyle |= BS_TOP;
+ if ( style & wxBU_BOTTOM )
+ msStyle |= BS_BOTTOM;
+#ifndef __WXWINCE__
+ // flat 2d buttons
+ if ( style & wxNO_BORDER )
+ msStyle |= BS_FLAT;
+#endif // __WXWINCE__
+
+ return msStyle;
+}
+
+void wxButton::SetLabel(const wxString& label)
+{
+ wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
+
+ wxButtonBase::SetLabel(label);
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+void wxButton::AdjustForBitmapSize(wxSize &size) const
+{
+ if ( !m_imageData )
+ return;
+
+ // account for the bitmap size
+ const wxSize sizeBmp = m_imageData->GetBitmap(State_Normal).GetSize();
+ const wxDirection dirBmp = m_imageData->GetBitmapPosition();
+ if ( dirBmp == wxLEFT || dirBmp == wxRIGHT )
+ {
+ size.x += sizeBmp.x;
+ if ( sizeBmp.y > size.y )
+ size.y = sizeBmp.y;
+ }
+ else // bitmap on top/below the text
+ {
+ size.y += sizeBmp.y;
+ if ( sizeBmp.x > size.x )
+ size.x = sizeBmp.x;
+ }
+
+ // account for the user-specified margins
+ size += 2*m_imageData->GetBitmapMargins();
+
+ // and also for the margins we always add internally (unless we have no
+ // border at all in which case the button has exactly the same size as
+ // bitmap and so no margins should be used)
+ if ( !HasFlag(wxBORDER_NONE) )
+ {
+ int marginH = 0,
+ marginV = 0;
+#if wxUSE_UXTHEME
+ if ( wxUxThemeEngine::GetIfActive() )
+ {
+ wxUxThemeHandle theme(const_cast<wxButton *>(this), L"BUTTON");
+
+ MARGINS margins;
+ wxUxThemeEngine::Get()->GetThemeMargins(theme, NULL,
+ BP_PUSHBUTTON,
+ PBS_NORMAL,
+ TMT_CONTENTMARGINS,
+ NULL,
+ &margins);
+
+ // XP doesn't draw themed buttons correctly when the client
+ // area is smaller than 8x8 - enforce this minimum size for
+ // small bitmaps
+ size.IncTo(wxSize(8, 8));
+
+ marginH = margins.cxLeftWidth + margins.cxRightWidth
+ + 2*XP_BUTTON_EXTRA_MARGIN;
+ marginV = margins.cyTopHeight + margins.cyBottomHeight
+ + 2*XP_BUTTON_EXTRA_MARGIN;
+ }
+ else
+#endif // wxUSE_UXTHEME
+ {
+ marginH =
+ marginV = OD_BUTTON_MARGIN;
+ }
+
+ size.IncBy(marginH, marginV);
+ }
+}
+
+wxSize wxButton::DoGetBestSize() const
+{
+ wxSize size;
+
+ // account for the text part if we have it or if we don't have any image at
+ // all (buttons initially created with empty label should still have a non
+ // zero size)
+ if ( ShowsLabel() || !m_imageData )
+ {
+ int flags = 0;
+ if ( GetAuthNeeded() )
+ flags |= wxMSWButton::Size_AuthNeeded;
+
+ size = wxMSWButton::ComputeBestSize(const_cast<wxButton *>(this), flags);
+ }
+
+ if ( m_imageData )
+ {
+ AdjustForBitmapSize(size);
+
+ CacheBestSize(size);
+ }
+
+ return size;
+}
+
+/* static */
+wxSize wxButtonBase::GetDefaultSize()
+{
+ static wxSize s_sizeBtn;
+
+ if ( s_sizeBtn.x == 0 )
+ {
+ wxScreenDC dc;
+ dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
+
+ // The size of a standard button in the dialog units is 50x14,
+ // translate this to pixels.
+ //
+ // Windows' computes dialog units using average character width over
+ // upper- and lower-case ASCII alphabet and not using the average
+ // character width metadata stored in the font; see
+ // http://support.microsoft.com/default.aspx/kb/145994 for detailed
+ // discussion.
+ //
+ // NB: wxMulDivInt32() is used, because it correctly rounds the result
+
+ const wxSize base = wxPrivate::GetAverageASCIILetterSize(dc);
+ s_sizeBtn.x = wxMulDivInt32(50, base.x, 4);
+ s_sizeBtn.y = wxMulDivInt32(14, base.y, 8);
+ }
+
+ return s_sizeBtn;
+}
+
+// ----------------------------------------------------------------------------
+// default button handling
+// ----------------------------------------------------------------------------
+
+/*
+ The comment below and all this code is probably due to not using WM_NEXTDLGCTL
+ message when changing focus (but just SetFocus() which is not enough), see
+ http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for the
+ full explanation.
+
+ TODO: Do use WM_NEXTDLGCTL and get rid of all this code.
+
+
+ "Everything you ever wanted to know about the default buttons" or "Why do we
+ have to do all this?"
+
+ In MSW the default button should be activated when the user presses Enter
+ and the current control doesn't process Enter itself somehow. This is
+ handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID
+ Another aspect of "defaultness" is that the default button has different
+ appearance: this is due to BS_DEFPUSHBUTTON style which is completely
+ separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should
+ be unset if our parent window is not active so it should be unset whenever
+ we lose activation and set back when we regain it.
+
+ Final complication is that when a button is active, it should be the default
+ one, i.e. pressing Enter on a button always activates it and not another
+ one.
+
+ We handle this by maintaining a permanent and a temporary default items in
+ wxControlContainer (both may be NULL). When a button becomes the current
+ control (i.e. gets focus) it sets itself as the temporary default which
+ ensures that it has the right appearance and that Enter will be redirected
+ to it. When the button loses focus, it unsets the temporary default and so
+ the default item will be the permanent default -- that is the default button
+ if any had been set or none otherwise, which is just what we want.
+
+ NB: all this is quite complicated by now and the worst is that normally
+ it shouldn't be necessary at all as for the normal Windows programs
+ DefWindowProc() and IsDialogMessage() take care of all this
+ automatically -- however in wxWidgets programs this doesn't work for
+ nested hierarchies (i.e. a notebook inside a notebook) for unknown
+ reason and so we have to reproduce all this code ourselves. It would be
+ very nice if we could avoid doing it.
+ */
+
+// set this button as the (permanently) default one in its panel
+wxWindow *wxButton::SetDefault()
+{
+ // set this one as the default button both for wxWidgets ...
+ wxWindow *winOldDefault = wxButtonBase::SetDefault();
+
+ // ... and Windows
+ SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+ SetDefaultStyle(this, true);
+
+ return winOldDefault;
+}
+
+// return the top level parent window if it's not being deleted yet, otherwise
+// return NULL
+static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win)
+{
+ for ( ;; )
+ {
+ // IsTopLevel() will return false for a wxTLW being deleted, so we also
+ // need the parent test for this case
+ wxWindow * const parent = win->GetParent();
+ if ( !parent || win->IsTopLevel() )
+ {
+ if ( win->IsBeingDeleted() )
+ return NULL;
+
+ break;
+ }
+
+ win = parent;
+ }
+
+ wxASSERT_MSG( win, wxT("button without top level parent?") );
+
+ wxTopLevelWindow * const tlw = wxDynamicCast(win, wxTopLevelWindow);
+ wxASSERT_MSG( tlw, wxT("logic error in GetTLWParentIfNotBeingDeleted()") );
+
+ return tlw;
+}
+
+// set this button as being currently default
+void wxButton::SetTmpDefault()
+{
+ wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent());
+ if ( !tlw )
+ return;
+
+ wxWindow *winOldDefault = tlw->GetDefaultItem();
+ tlw->SetTmpDefaultItem(this);
+
+ SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+ SetDefaultStyle(this, true);
+}
+
+// unset this button as currently default, it may still stay permanent default
+void wxButton::UnsetTmpDefault()
+{
+ wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent());
+ if ( !tlw )
+ return;
+
+ tlw->SetTmpDefaultItem(NULL);
+
+ wxWindow *winOldDefault = tlw->GetDefaultItem();
+
+ SetDefaultStyle(this, false);
+ SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true);
+}
+
+/* static */
+void
+wxButton::SetDefaultStyle(wxButton *btn, bool on)
+{
+ // we may be called with NULL pointer -- simpler to do the check here than
+ // in the caller which does wxDynamicCast()
+ if ( !btn )
+ return;
+
+ // first, let DefDlgProc() know about the new default button
+ if ( on )
+ {
+ // we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have
+ // focus at all any more
+ if ( !wxTheApp->IsActive() )
+ return;
+
+ wxWindow * const tlw = wxGetTopLevelParent(btn);
+ wxCHECK_RET( tlw, wxT("button without top level window?") );
+
+ ::SendMessage(GetHwndOf(tlw), DM_SETDEFID, btn->GetId(), 0L);
+
+ // sending DM_SETDEFID also changes the button style to
+ // BS_DEFPUSHBUTTON so there is nothing more to do
+ }
+
+ // then also change the style as needed
+ long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE);
+ if ( !(style & BS_DEFPUSHBUTTON) == on )
+ {
+ // don't do it with the owner drawn buttons because it will
+ // reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW &
+ // BS_DEFPUSHBUTTON != 0)!
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ ::SendMessage(GetHwndOf(btn), BM_SETSTYLE,
+ on ? style | BS_DEFPUSHBUTTON
+ : style & ~BS_DEFPUSHBUTTON,
+ 1L /* redraw */);
+ }
+ else // owner drawn
+ {
+ // redraw the button - it will notice itself that it's
+ // [not] the default one [any longer]
+ btn->Refresh();
+ }
+ }
+ //else: already has correct style
+}
+
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()
+{
+ wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
projects / wxWidgets.git / blobdiff