+}
+
+// ----------------------------------------------------------------------------
+// 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;
+
+#ifdef __WIN32__
+ // 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__
+#endif // __WIN32__
+
+ return msStyle;
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
+{
+ wxClientDC dc(wx_const_cast(wxButton *, this));
+ dc.SetFont(GetFont());
+
+ wxCoord wBtn,
+ hBtn;
+ dc.GetMultiLineTextExtent(GetLabel(), &wBtn, &hBtn);
+
+ // add a margin -- the button is wider than just its label
+ wBtn += 3*GetCharWidth();
+ hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hBtn);
+
+ // 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 ( !HasFlag(wxBU_EXACTFIT) )
+ {
+ wxSize sz = GetDefaultSize();
+ if (wBtn > sz.x)
+ sz.x = wBtn;
+ if (hBtn > sz.y)
+ sz.y = hBtn;
+
+ return sz;
+ }
+
+ return wxSize(wBtn, hBtn);
+}
+
+/* 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
+ // NB1: the multipliers come from the Windows convention
+ // NB2: the extra +1/+2 were needed to get the size be the same as the
+ // size of the buttons in the standard dialog - I don't know how
+ // this happens, but on my system this size is 75x23 in pixels and
+ // 23*8 isn't even divisible by 14... Would be nice to understand
+ // why these constants are needed though!
+ s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+ s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+ }
+
+ return s_sizeBtn;
+}
+
+// ----------------------------------------------------------------------------
+// default button handling
+// ----------------------------------------------------------------------------
+
+/*
+ "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
+void wxButton::SetDefault()
+{
+ wxWindow *parent = GetParent();
+
+ wxCHECK_RET( parent, _T("button without parent?") );
+
+ // set this one as the default button both for wxWidgets ...
+ wxWindow *winOldDefault = parent->SetDefaultItem(this);
+
+ // ... and Windows
+ SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+ SetDefaultStyle(this, true);
+}
+
+// set this button as being currently default
+void wxButton::SetTmpDefault()
+{
+ wxWindow *parent = GetParent();
+
+ wxCHECK_RET( parent, _T("button without parent?") );
projects / wxWidgets.git / blobdiff