3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
462 lines
15 KiB
C++
462 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/button.cpp
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// Purpose: wxButton
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_BUTTON
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#include "wx/button.h"
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#ifndef WX_PRECOMP
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#include "wx/app.h"
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#include "wx/brush.h"
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#include "wx/panel.h"
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#include "wx/bmpbuttn.h"
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#include "wx/settings.h"
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#include "wx/dcscreen.h"
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#include "wx/dcclient.h"
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#include "wx/toplevel.h"
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#include "wx/msw/wrapcctl.h"
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#include "wx/msw/private.h"
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#include "wx/msw/missing.h"
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#endif
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#include "wx/imaglist.h"
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#include "wx/stockitem.h"
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#include "wx/msw/private/button.h"
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#include "wx/msw/private/dc.h"
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#include "wx/private/window.h"
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#if wxUSE_MARKUP
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#include "wx/generic/private/markuptext.h"
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#endif // wxUSE_MARKUP
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// set the value for BCM_SETSHIELD (for the UAC shield) if it's not defined in
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// the header
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#ifndef BCM_SETSHIELD
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#define BCM_SETSHIELD 0x160c
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#endif
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// ----------------------------------------------------------------------------
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// macros
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// ----------------------------------------------------------------------------
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BEGIN_EVENT_TABLE(wxButton, wxButtonBase)
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EVT_CHAR_HOOK(wxButton::OnCharHook)
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END_EVENT_TABLE()
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// creation/destruction
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// ----------------------------------------------------------------------------
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bool wxButton::Create(wxWindow *parent,
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wxWindowID id,
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const wxString& lbl,
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const wxPoint& pos,
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const wxSize& size,
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long style,
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const wxValidator& validator,
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const wxString& name)
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{
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wxString label(lbl);
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if (label.empty() && wxIsStockID(id))
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{
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// On Windows, some buttons aren't supposed to have mnemonics
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label = wxGetStockLabel
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(
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id,
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id == wxID_OK || id == wxID_CANCEL || id == wxID_CLOSE
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? wxSTOCK_NOFLAGS
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: wxSTOCK_WITH_MNEMONIC
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);
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}
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if ( !CreateControl(parent, id, pos, size, style, validator, name) )
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return false;
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WXDWORD exstyle;
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WXDWORD msStyle = MSWGetStyle(style, &exstyle);
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// if the label contains several lines we must explicitly tell the button
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// about it or it wouldn't draw it correctly ("\n"s would just appear as
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// black boxes)
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//
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// NB: we do it here and not in MSWGetStyle() because we need the label
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// value and the label is not set yet when MSWGetStyle() is called
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msStyle |= wxMSWButton::GetMultilineStyle(label);
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return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle);
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}
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wxButton::~wxButton()
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{
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wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
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if ( tlw && tlw->GetTmpDefaultItem() == this )
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{
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UnsetTmpDefault();
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}
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}
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// ----------------------------------------------------------------------------
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// flags
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// ----------------------------------------------------------------------------
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WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
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{
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// buttons never have an external border, they draw their own one
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WXDWORD msStyle = wxControl::MSWGetStyle
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(
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(style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
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);
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// we must use WS_CLIPSIBLINGS with the buttons or they would draw over
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// each other in any resizable dialog which has more than one button in
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// the bottom
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msStyle |= WS_CLIPSIBLINGS;
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// don't use "else if" here: weird as it is, but you may combine wxBU_LEFT
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// and wxBU_RIGHT to get BS_CENTER!
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if ( style & wxBU_LEFT )
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msStyle |= BS_LEFT;
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if ( style & wxBU_RIGHT )
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msStyle |= BS_RIGHT;
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if ( style & wxBU_TOP )
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msStyle |= BS_TOP;
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if ( style & wxBU_BOTTOM )
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msStyle |= BS_BOTTOM;
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#ifndef __WXWINCE__
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// flat 2d buttons
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if ( style & wxNO_BORDER )
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msStyle |= BS_FLAT;
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#endif // __WXWINCE__
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return msStyle;
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}
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/* static */
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wxSize wxButtonBase::GetDefaultSize()
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{
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static wxSize s_sizeBtn;
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if ( s_sizeBtn.x == 0 )
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{
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wxScreenDC dc;
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dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
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// The size of a standard button in the dialog units is 50x14,
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// translate this to pixels.
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//
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// Windows' computes dialog units using average character width over
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// upper- and lower-case ASCII alphabet and not using the average
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// character width metadata stored in the font; see
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// http://support.microsoft.com/default.aspx/kb/145994 for detailed
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// discussion.
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//
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// NB: wxMulDivInt32() is used, because it correctly rounds the result
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const wxSize base = wxPrivate::GetAverageASCIILetterSize(dc);
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s_sizeBtn.x = wxMulDivInt32(50, base.x, 4);
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s_sizeBtn.y = wxMulDivInt32(14, base.y, 8);
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}
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return s_sizeBtn;
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}
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// ----------------------------------------------------------------------------
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// default button handling
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// ----------------------------------------------------------------------------
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/*
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In normal Windows programs there is no need to handle default button
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manually because this is taken care by the system provided you use
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WM_NEXTDLGCTL and not just SetFocus() to switch focus betweeh the controls
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(see http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for
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the full explanation why just calling SetFocus() is not enough).
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However this only works if the window is a dialog, i.e. uses DefDlgProc(),
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but not with plain windows using DefWindowProc() and we do want to have
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default buttons inside frames as well, so we're forced to reimplement all
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this logic ourselves. It would be great to avoid having to do this but using
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DefDlgProc() for all the windows would almost certainly result in more
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problems, we'd need to carefully filter messages and pass some of them to
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DefWindowProc() and some of them to DefDlgProc() which looks dangerous (what
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if the handling of some message changes in some Windows version?), so doing
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this ourselves is probably a lesser evil.
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Read the rest to learn everything you ever wanted to know about the default
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buttons but were afraid to ask.
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In MSW the default button should be activated when the user presses Enter
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and the current control doesn't process Enter itself somehow. This is
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handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID
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Another aspect of "defaultness" is that the default button has different
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appearance: this is due to BS_DEFPUSHBUTTON style which is completely
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separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should
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be unset if our parent window is not active so it should be unset whenever
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we lose activation and set back when we regain it.
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Final complication is that when a button is active, it should be the default
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one, i.e. pressing Enter on a button always activates it and not another
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one.
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We handle this by maintaining a permanent and a temporary default items in
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wxControlContainer (both may be NULL). When a button becomes the current
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control (i.e. gets focus) it sets itself as the temporary default which
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ensures that it has the right appearance and that Enter will be redirected
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to it. When the button loses focus, it unsets the temporary default and so
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the default item will be the permanent default -- that is the default button
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if any had been set or none otherwise, which is just what we want.
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*/
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// set this button as the (permanently) default one in its panel
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wxWindow *wxButton::SetDefault()
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{
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// set this one as the default button both for wxWidgets ...
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wxWindow *winOldDefault = wxButtonBase::SetDefault();
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// ... and Windows
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SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
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SetDefaultStyle(this, true);
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return winOldDefault;
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}
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// return the top level parent window if it's not being deleted yet, otherwise
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// return NULL
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static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win)
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{
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for ( ;; )
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{
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// IsTopLevel() will return false for a wxTLW being deleted, so we also
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// need the parent test for this case
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wxWindow * const parent = win->GetParent();
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if ( !parent || win->IsTopLevel() )
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{
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if ( win->IsBeingDeleted() )
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return NULL;
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break;
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}
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win = parent;
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}
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wxASSERT_MSG( win, wxT("button without top level parent?") );
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wxTopLevelWindow * const tlw = wxDynamicCast(win, wxTopLevelWindow);
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wxASSERT_MSG( tlw, wxT("logic error in GetTLWParentIfNotBeingDeleted()") );
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return tlw;
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}
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// set this button as being currently default
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void wxButton::SetTmpDefault()
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{
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wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this);
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if ( !tlw )
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return;
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wxWindow *winOldDefault = tlw->GetDefaultItem();
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tlw->SetTmpDefaultItem(this);
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SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
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SetDefaultStyle(this, true);
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}
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// unset this button as currently default, it may still stay permanent default
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void wxButton::UnsetTmpDefault()
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{
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wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this);
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if ( !tlw )
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return;
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tlw->SetTmpDefaultItem(NULL);
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wxWindow *winOldDefault = tlw->GetDefaultItem();
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SetDefaultStyle(this, false);
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SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true);
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}
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/* static */
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void
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wxButton::SetDefaultStyle(wxButton *btn, bool on)
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{
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// we may be called with NULL pointer -- simpler to do the check here than
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// in the caller which does wxDynamicCast()
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if ( !btn )
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return;
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// first, let DefDlgProc() know about the new default button
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if ( on )
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{
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// we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have
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// focus at all any more
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if ( !wxTheApp->IsActive() )
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return;
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wxWindow * const tlw = wxGetTopLevelParent(btn);
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wxCHECK_RET( tlw, wxT("button without top level window?") );
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::SendMessage(GetHwndOf(tlw), DM_SETDEFID, btn->GetId(), 0L);
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// sending DM_SETDEFID also changes the button style to
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// BS_DEFPUSHBUTTON so there is nothing more to do
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}
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// then also change the style as needed
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long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE);
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if ( !(style & BS_DEFPUSHBUTTON) == on )
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{
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// don't do it with the owner drawn buttons because it will
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// reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW &
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// BS_DEFPUSHBUTTON != 0)!
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if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
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{
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::SendMessage(GetHwndOf(btn), BM_SETSTYLE,
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on ? style | BS_DEFPUSHBUTTON
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: style & ~BS_DEFPUSHBUTTON,
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1L /* redraw */);
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}
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else // owner drawn
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{
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// redraw the button - it will notice itself that it's
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// [not] the default one [any longer]
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btn->Refresh();
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}
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}
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//else: already has correct style
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}
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// ----------------------------------------------------------------------------
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// helpers
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// ----------------------------------------------------------------------------
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bool wxButton::SendClickEvent()
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{
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wxCommandEvent event(wxEVT_BUTTON, GetId());
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event.SetEventObject(this);
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return ProcessCommand(event);
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}
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void wxButton::Command(wxCommandEvent & event)
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{
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ProcessCommand(event);
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}
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// ----------------------------------------------------------------------------
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// event/message handlers
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// ----------------------------------------------------------------------------
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void wxButton::OnCharHook(wxKeyEvent& event)
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{
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// We want to ensure that the button always processes Enter key events
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// itself, even if it's inside some control that normally takes over them
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// (this happens when the button is part of an in-place editor control for
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// example).
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if ( event.GetKeyCode() == WXK_RETURN )
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{
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// We should ensure that subsequent key events are still generated even
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// if we did handle EVT_CHAR_HOOK (normally this would suppress their
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// generation).
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event.DoAllowNextEvent();
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}
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else
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{
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event.Skip();
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}
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}
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bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
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{
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bool processed = false;
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switch ( param )
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{
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// NOTE: Apparently older versions (NT 4?) of the common controls send
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// BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn
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// buttons, so in order to send two EVT_BUTTON events we should
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// catch both types. Currently (Feb 2003) up-to-date versions of
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// win98, win2k and winXP all send two BN_CLICKED messages for
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// all button types, so we don't catch BN_DOUBLECLICKED anymore
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// in order to not get 3 EVT_BUTTON events. If this is a problem
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// then we need to figure out which version of the comctl32 changed
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// this behaviour and test for it.
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case 1: // message came from an accelerator
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case BN_CLICKED: // normal buttons send this
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processed = SendClickEvent();
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break;
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}
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return processed;
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}
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WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
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{
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// when we receive focus, we want to temporarily become the default button in
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// our parent panel so that pressing "Enter" would activate us -- and when
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// losing it we should restore the previous default button as well
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if ( nMsg == WM_SETFOCUS )
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{
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SetTmpDefault();
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// let the default processing take place too
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}
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else if ( nMsg == WM_KILLFOCUS )
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{
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UnsetTmpDefault();
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}
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// let the base class do all real processing
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return wxAnyButton::MSWWindowProc(nMsg, wParam, lParam);
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}
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// ----------------------------------------------------------------------------
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// authentication needed handling
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// ----------------------------------------------------------------------------
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bool wxButton::DoGetAuthNeeded() const
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{
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return m_authNeeded;
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}
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void wxButton::DoSetAuthNeeded(bool show)
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{
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// show/hide UAC symbol on Windows Vista and later
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if ( wxGetWinVersion() >= wxWinVersion_6 )
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{
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m_authNeeded = show;
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::SendMessage(GetHwnd(), BCM_SETSHIELD, 0, show);
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InvalidateBestSize();
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}
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}
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#endif // wxUSE_BUTTON
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