#pragma hdrstop
#endif
+#if wxUSE_BUTTON
+
#ifndef WX_PRECOMP
#include "wx/button.h"
#include "wx/brush.h"
const wxValidator& validator,
const wxString& name)
{
- if ( !CreateBase(parent, id, pos, size, style, validator, name) )
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
return FALSE;
- parent->AddChild((wxButton *)this);
-
- m_backgroundColour = parent->GetBackgroundColour();
- m_foregroundColour = parent->GetForegroundColour();
-
- long msStyle = WS_VISIBLE | WS_TABSTOP | WS_CHILD /* | WS_CLIPSIBLINGS */ ;
+ WXDWORD exstyle;
+ WXDWORD msStyle = MSWGetStyle(style, &exstyle);
#ifdef __WIN32__
- if(m_windowStyle & wxBU_LEFT)
- msStyle |= BS_LEFT;
- if(m_windowStyle & wxBU_RIGHT)
- msStyle |= BS_RIGHT;
- if(m_windowStyle & wxBU_TOP)
- msStyle |= BS_TOP;
- if(m_windowStyle & wxBU_BOTTOM)
- msStyle |= BS_BOTTOM;
-#endif
-
- m_hWnd = (WXHWND)CreateWindowEx
- (
- MakeExtendedStyle(m_windowStyle),
- wxT("BUTTON"),
- label,
- msStyle,
- 0, 0, 0, 0,
- GetWinHwnd(parent),
- (HMENU)m_windowId,
- wxGetInstance(),
- NULL
- );
-
- if (m_hWnd == 0)
+ // 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 m_label is not set yet when MSWGetStyle() is called;
+ // besides changing BS_MULTILINE during run-time is pointless anyhow
+ if ( label.find(_T('\n')) != wxString::npos )
{
- wxString msg;
-#ifdef __WIN16__
- msg.Printf(wxT("CreateWindowEx failed"));
-#else
- msg.Printf(wxT("CreateWindowEx failed with error number %ld"), (long) GetLastError());
-#endif
- wxFAIL_MSG(msg);
+ msStyle |= BS_MULTILINE;
}
+#endif // __WIN32__
- // Subclass again for purposes of dialog editing mode
- SubclassWin(m_hWnd);
-
- SetFont(parent->GetFont());
-
- SetSize(pos.x, pos.y, size.x, size.y);
-
- return TRUE;
+ return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
}
wxButton::~wxButton()
{
- wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
- if ( panel )
- {
- if ( panel->GetDefaultItem() == this )
- {
- // don't leave the panel with invalid default item
- panel->SetDefaultItem(NULL);
- }
- }
+}
+
+// ----------------------------------------------------------------------------
+// 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;
+#endif // __WIN32__
+
+ return msStyle;
}
// ----------------------------------------------------------------------------
// the button height is proportional to the height of the font used
int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
- wxSize sz = GetDefaultSize();
- if (wBtn > sz.x) sz.x = wBtn;
- if (hBtn > sz.y) sz.y = hBtn;
+ if (!HasFlag(wxBU_EXACTFIT))
+ {
+ wxSize sz = GetDefaultSize();
+ if (wBtn > sz.x) sz.x = wBtn;
+ if (hBtn > sz.y) sz.y = hBtn;
+ return sz;
+ }
+ else
+ return wxSize(wBtn, hBtn);
- return sz;
}
/* static */
-wxSize wxButton::GetDefaultSize()
+wxSize wxButtonBase::GetDefaultSize()
{
static wxSize s_sizeBtn;
if ( s_sizeBtn.x == 0 )
{
wxScreenDC dc;
- dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
// the size of a standard button in the dialog units is 50x14,
// translate this to pixels
}
// ----------------------------------------------------------------------------
-// set this button as the default one in its panel
+// 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 (!).
+
+ 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.
+
+ Remark that we probably don't need to send DM_SETDEFID as we don't use
+ ::IsDialogMessage() (which relies on it) any longer but OTOH it probably
+ doesn't hurt neither.
+ */
+
+// set this button as the (permanently) default one in its panel
void wxButton::SetDefault()
{
wxWindow *parent = GetParent();
- wxButton *btnOldDefault = NULL;
- wxPanel *panel = wxDynamicCast(parent, wxPanel);
- if ( panel )
+
+ wxCHECK_RET( parent, _T("button without parent?") );
+
+ // set this one as the default button both for wxWindows and Windows
+ wxWindow *winOldDefault = parent->SetDefaultItem(this);
+ ::SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
+
+ UpdateDefaultStyle(this, winOldDefault);
+}
+
+void wxButton::SetTmpDefault()
+{
+ wxWindow *parent = GetParent();
+
+ wxCHECK_RET( parent, _T("button without parent?") );
+
+ wxWindow *winOldDefault = parent->GetDefaultItem();
+ parent->SetTmpDefaultItem(this);
+ if ( winOldDefault != this )
{
- btnOldDefault = panel->GetDefaultItem();
- panel->SetDefaultItem(this);
+ UpdateDefaultStyle(this, winOldDefault);
}
+ //else: no styles to update
+}
+
+void wxButton::UnsetTmpDefault()
+{
+ wxWindow *parent = GetParent();
+
+ wxCHECK_RET( parent, _T("button without parent?") );
- if ( parent )
+ parent->SetTmpDefaultItem(NULL);
+
+ wxWindow *winOldDefault = parent->GetDefaultItem();
+ if ( winOldDefault != this )
{
- SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
+ UpdateDefaultStyle(winOldDefault, this);
}
+ //else: we had been default before anyhow
+}
- if ( btnOldDefault )
+/* static */
+void
+wxButton::UpdateDefaultStyle(wxWindow *winDefault, wxWindow *winOldDefault)
+{
+ // clear the BS_DEFPUSHBUTTON for the old default button
+ wxButton *btnOldDefault = wxDynamicCast(winOldDefault, wxButton);
+ if ( btnOldDefault && btnOldDefault != winDefault )
{
// remove the BS_DEFPUSHBUTTON style from the other button
- long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
+ long style = ::GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
// don't do it with the owner drawn buttons because it will reset
// BS_OWNERDRAW style bit too (BS_OWNERDRAW & BS_DEFPUSHBUTTON != 0)!
if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
{
style &= ~BS_DEFPUSHBUTTON;
- SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+ ::SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
}
else
{
}
}
- // set this button as the default
- long style = GetWindowLong(GetHwnd(), GWL_STYLE);
- if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ // and set BS_DEFPUSHBUTTON for this button
+ wxButton *btnDefault = wxDynamicCast(winDefault, wxButton);
+ if ( btnDefault )
{
- style |= BS_DEFPUSHBUTTON;
- SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
+ long style = ::GetWindowLong(GetHwndOf(btnDefault), GWL_STYLE);
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ style |= BS_DEFPUSHBUTTON;
+ ::SendMessage(GetHwndOf(btnDefault), BM_SETSTYLE, style, 1L);
+ }
+ else
+ {
+ btnDefault->Refresh();
+ }
}
}
long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- // when we receive focus, we want to become the default button in our
- // parent panel
+ // when we receive focus, we want to temporary become the default button in
+ // our parent panel so that pressing "Enter" would activate us -- and when
+ // losing it we should restore the previous default button as well
if ( nMsg == WM_SETFOCUS )
{
- SetDefault();
+ SetTmpDefault();
- // let the default processign take place too
+ // let the default processing take place too
+ }
+ else if ( nMsg == WM_KILLFOCUS )
+ {
+ UnsetTmpDefault();
}
else if ( nMsg == WM_LBUTTONDBLCLK )
{
// appearance - without this, it won't do it
(void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam);
- // and conitnue with processing the message normally as well
+ // and continue with processing the message normally as well
}
// let the base class do all real processing
}
#endif // __WIN32__
+
+#endif // wxUSE_BUTTON
+
projects / wxWidgets.git / blobdiff