X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5aab763c09c663ab5e5b92e533ca025e811f1bcf..d485bda109d5ef0fef36a3f737549e9b9f54baab:/src/msw/button.cpp diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 81c588c5be..324803e4d8 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: msw/button.cpp +// Name: src/msw/button.cpp // Purpose: wxButton // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,10 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "button.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -30,27 +26,45 @@ #if wxUSE_BUTTON +#include "wx/button.h" + #ifndef WX_PRECOMP #include "wx/app.h" - #include "wx/button.h" #include "wx/brush.h" #include "wx/panel.h" #include "wx/bmpbuttn.h" #include "wx/settings.h" #include "wx/dcscreen.h" + #include "wx/dcclient.h" + #include "wx/toplevel.h" + #include "wx/msw/wrapcctl.h" + #include "wx/msw/private.h" + #include "wx/msw/missing.h" #endif -#include "wx/msw/private.h" +#include "wx/imaglist.h" +#include "wx/stockitem.h" +#include "wx/msw/private/button.h" +#include "wx/msw/private/dc.h" +#include "wx/private/window.h" + +#if wxUSE_MARKUP + #include "wx/generic/private/markuptext.h" +#endif // wxUSE_MARKUP + +// set the value for BCM_SETSHIELD (for the UAC shield) if it's not defined in +// the header +#ifndef BCM_SETSHIELD + #define BCM_SETSHIELD 0x160c +#endif // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) - -// this macro tries to adjust the default button height to a reasonable value -// using the char height as the base -#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10) +BEGIN_EVENT_TABLE(wxButton, wxButtonBase) + EVT_CHAR_HOOK(wxButton::OnCharHook) +END_EVENT_TABLE() // ============================================================================ // implementation @@ -62,38 +76,50 @@ IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) bool wxButton::Create(wxWindow *parent, wxWindowID id, - const wxString& label, + const wxString& lbl, const wxPoint& pos, const wxSize& size, long style, const wxValidator& validator, const wxString& name) { + 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; + return false; WXDWORD exstyle; WXDWORD msStyle = MSWGetStyle(style, &exstyle); -#ifdef __WIN32__ // 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 ) - { - msStyle |= BS_MULTILINE; - } -#endif // __WIN32__ + // value and the label is not set yet when MSWGetStyle() is called + msStyle |= wxMSWButton::GetMultilineStyle(label); - return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle); + return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle); } wxButton::~wxButton() { + wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow); + if ( tlw && tlw->GetTmpDefaultItem() == this ) + { + UnsetTmpDefault(); + } } // ---------------------------------------------------------------------------- @@ -109,11 +135,10 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const ); // 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 + // each other in any resizable 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 ) @@ -124,46 +149,15 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const msStyle |= BS_TOP; if ( style & wxBU_BOTTOM ) msStyle |= BS_BOTTOM; -#endif // __WIN32__ +#ifndef __WXWINCE__ + // flat 2d buttons + if ( style & wxNO_BORDER ) + msStyle |= BS_FLAT; +#endif // __WXWINCE__ return msStyle; } -// ---------------------------------------------------------------------------- -// size management including autosizing -// ---------------------------------------------------------------------------- - -wxSize wxButton::DoGetBestSize() const -{ - int wBtn; - GetTextExtent(wxGetWindowText(GetHWND()), &wBtn, NULL); - - int wChar, hChar; - wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont()); - - // add a margin -- the button is wider than just its label - wBtn += 3*wChar; - - // the button height is proportional to the height of the font used - int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar); - - // 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() { @@ -174,16 +168,20 @@ wxSize wxButtonBase::GetDefaultSize() 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; + // 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; @@ -194,8 +192,25 @@ wxSize wxButtonBase::GetDefaultSize() // ---------------------------------------------------------------------------- /* - "Everything you ever wanted to know about the default buttons" or "Why do we - have to do all this?" + In normal Windows programs there is no need to handle default button + manually because this is taken care by the system provided you use + WM_NEXTDLGCTL and not just SetFocus() to switch focus betweeh the controls + (see http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for + the full explanation why just calling SetFocus() is not enough). + + However this only works if the window is a dialog, i.e. uses DefDlgProc(), + but not with plain windows using DefWindowProc() and we do want to have + default buttons inside frames as well, so we're forced to reimplement all + this logic ourselves. It would be great to avoid having to do this but using + DefDlgProc() for all the windows would almost certainly result in more + problems, we'd need to carefully filter messages and pass some of them to + DefWindowProc() and some of them to DefDlgProc() which looks dangerous (what + if the handling of some message changes in some Windows version?), so doing + this ourselves is probably a lesser evil. + + Read the rest to learn everything you ever wanted to know about the default + buttons but were afraid to ask. + 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 @@ -217,58 +232,76 @@ wxSize wxButtonBase::GetDefaultSize() 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 wxWindows 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 *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) { - wxWindow *parent = GetParent(); + 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; - wxCHECK_RET( parent, _T("button without parent?") ); + break; + } - // set this one as the default button both for wxWindows ... - wxWindow *winOldDefault = parent->SetDefaultItem(this); + win = parent; + } - // ... and Windows - SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE); - SetDefaultStyle(this, TRUE); + 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() { - wxWindow *parent = GetParent(); - - wxCHECK_RET( parent, _T("button without parent?") ); + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this); + if ( !tlw ) + return; - wxWindow *winOldDefault = parent->GetDefaultItem(); - parent->SetTmpDefaultItem(this); + wxWindow *winOldDefault = tlw->GetDefaultItem(); + tlw->SetTmpDefaultItem(this); - SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE); - SetDefaultStyle(this, TRUE); + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); + SetDefaultStyle(this, true); } // unset this button as currently default, it may still stay permanent default void wxButton::UnsetTmpDefault() { - wxWindow *parent = GetParent(); - - wxCHECK_RET( parent, _T("button without parent?") ); + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this); + if ( !tlw ) + return; - parent->SetTmpDefaultItem(NULL); + tlw->SetTmpDefaultItem(NULL); - wxWindow *winOldDefault = parent->GetDefaultItem(); + wxWindow *winOldDefault = tlw->GetDefaultItem(); - SetDefaultStyle(this, FALSE); - SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), TRUE); + SetDefaultStyle(this, false); + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true); } /* static */ @@ -288,18 +321,13 @@ wxButton::SetDefaultStyle(wxButton *btn, bool on) if ( !wxTheApp->IsActive() ) return; - // look for a panel-like window - wxWindow *win = btn->GetParent(); - while ( win && !win->HasFlag(wxTAB_TRAVERSAL) ) - win = win->GetParent(); + wxWindow * const tlw = wxGetTopLevelParent(btn); + wxCHECK_RET( tlw, wxT("button without top level window?") ); - if ( win ) - { - ::SendMessage(GetHwndOf(win), DM_SETDEFID, btn->GetId(), 0L); + ::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 - } + // 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 @@ -347,14 +375,33 @@ void wxButton::Command(wxCommandEvent & event) // event/message handlers // ---------------------------------------------------------------------------- +void wxButton::OnCharHook(wxKeyEvent& event) +{ + // We want to ensure that the button always processes Enter key events + // itself, even if it's inside some control that normally takes over them + // (this happens when the button is part of an in-place editor control for + // example). + if ( event.GetKeyCode() == WXK_RETURN ) + { + // We should ensure that subsequent key events are still generated even + // if we did handle EVT_CHAR_HOOK (normally this would suppress their + // generation). + event.DoAllowNextEvent(); + } + else + { + event.Skip(); + } +} + bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - bool processed = FALSE; + bool processed = false; switch ( param ) { // NOTE: Apparently older versions (NT 4?) of the common controls send // BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn - // buttons, so in order to send two EVET_BUTTON events we should + // buttons, so in order to send two EVT_BUTTON events we should // catch both types. Currently (Feb 2003) up-to-date versions of // win98, win2k and winXP all send two BN_CLICKED messages for // all button types, so we don't catch BN_DOUBLECLICKED anymore @@ -371,9 +418,9 @@ bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) return processed; } -long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) +WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - // when we receive focus, we want to temporary become the default button in + // when we receive focus, we want to temporarily 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 ) @@ -386,250 +433,30 @@ long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { UnsetTmpDefault(); } - else if ( nMsg == WM_LBUTTONDBLCLK ) - { - // emulate a click event to force an owner-drawn button to change its - // appearance - without this, it won't do it - (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam); - - // and continue with processing the message normally as well - } // let the base class do all real processing - return wxControl::MSWWindowProc(nMsg, wParam, lParam); + return wxAnyButton::MSWWindowProc(nMsg, wParam, lParam); } // ---------------------------------------------------------------------------- -// owner-drawn buttons support +// authentication needed handling // ---------------------------------------------------------------------------- -#ifdef __WIN32__ - -// drawing helpers - -static void DrawButtonText(HDC hdc, - RECT *pRect, - const wxString& text, - COLORREF col) -{ - COLORREF colOld = SetTextColor(hdc, col); - int modeOld = SetBkMode(hdc, TRANSPARENT); - - DrawText(hdc, text, text.length(), pRect, - DT_CENTER | DT_VCENTER | DT_SINGLELINE); - - SetBkMode(hdc, modeOld); - SetTextColor(hdc, colOld); -} - -static void DrawRect(HDC hdc, const RECT& r) -{ - MoveToEx(hdc, r.left, r.top, NULL); - LineTo(hdc, r.right, r.top); - LineTo(hdc, r.right, r.bottom); - LineTo(hdc, r.left, r.bottom); - LineTo(hdc, r.left, r.top); -} - -void wxButton::MakeOwnerDrawn() +bool wxButton::DoGetAuthNeeded() const { - long style = GetWindowLong(GetHwnd(), GWL_STYLE); - if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) - { - // make it so - style |= BS_OWNERDRAW; - SetWindowLong(GetHwnd(), GWL_STYLE, style); - } -} - -bool wxButton::SetBackgroundColour(const wxColour &colour) -{ - if ( !wxControl::SetBackgroundColour(colour) ) - { - // nothing to do - return FALSE; - } - - MakeOwnerDrawn(); - - Refresh(); - - return TRUE; -} - -bool wxButton::SetForegroundColour(const wxColour &colour) -{ - if ( !wxControl::SetForegroundColour(colour) ) - { - // nothing to do - return FALSE; - } - - MakeOwnerDrawn(); - - Refresh(); - - return TRUE; -} - -/* - The button frame looks like this normally: - - WWWWWWWWWWWWWWWWWWB - WHHHHHHHHHHHHHHHHGB W = white (HILIGHT) - WH GB H = light grey (LIGHT) - WH GB G = dark grey (SHADOW) - WH GB B = black (DKSHADOW) - WH GB - WGGGGGGGGGGGGGGGGGB - BBBBBBBBBBBBBBBBBBB - - When the button is selected, the button becomes like this (the total button - size doesn't change): - - BBBBBBBBBBBBBBBBBBB - BWWWWWWWWWWWWWWWWBB - BWHHHHHHHHHHHHHHGBB - BWH GBB - BWH GBB - BWGGGGGGGGGGGGGGGBB - BBBBBBBBBBBBBBBBBBB - BBBBBBBBBBBBBBBBBBB - - When the button is pushed (while selected) it is like: - - BBBBBBBBBBBBBBBBBBB - BGGGGGGGGGGGGGGGGGB - BG GB - BG GB - BG GB - BG GB - BGGGGGGGGGGGGGGGGGB - BBBBBBBBBBBBBBBBBBB -*/ - -static void DrawButtonFrame(HDC hdc, const RECT& rectBtn, - bool selected, bool pushed) -{ - RECT r; - CopyRect(&r, &rectBtn); - - HPEN hpenBlack = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)), - hpenGrey = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)), - hpenLightGr = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DLIGHT)), - hpenWhite = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT)); - - HPEN hpenOld = (HPEN)SelectObject(hdc, hpenBlack); - - r.right--; - r.bottom--; - - if ( pushed ) - { - DrawRect(hdc, r); - - (void)SelectObject(hdc, hpenGrey); - InflateRect(&r, -1, -1); - - DrawRect(hdc, r); - } - else // !pushed - { - if ( selected ) - { - DrawRect(hdc, r); - - InflateRect(&r, -1, -1); - } - - MoveToEx(hdc, r.left, r.bottom, NULL); - LineTo(hdc, r.right, r.bottom); - LineTo(hdc, r.right, r.top - 1); - - (void)SelectObject(hdc, hpenWhite); - MoveToEx(hdc, r.left, r.bottom - 1, NULL); - LineTo(hdc, r.left, r.top); - LineTo(hdc, r.right, r.top); - - (void)SelectObject(hdc, hpenLightGr); - MoveToEx(hdc, r.left + 1, r.bottom - 2, NULL); - LineTo(hdc, r.left + 1, r.top + 1); - LineTo(hdc, r.right - 1, r.top + 1); - - (void)SelectObject(hdc, hpenGrey); - MoveToEx(hdc, r.left + 1, r.bottom - 1, NULL); - LineTo(hdc, r.right - 1, r.bottom - 1); - LineTo(hdc, r.right - 1, r.top); - } - - (void)SelectObject(hdc, hpenOld); - DeleteObject(hpenWhite); - DeleteObject(hpenLightGr); - DeleteObject(hpenGrey); - DeleteObject(hpenBlack); + return m_authNeeded; } -bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) +void wxButton::DoSetAuthNeeded(bool show) { - LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; - - RECT rectBtn; - CopyRect(&rectBtn, &lpDIS->rcItem); - - COLORREF colBg = wxColourToRGB(GetBackgroundColour()), - colFg = wxColourToRGB(GetForegroundColour()); - - HDC hdc = lpDIS->hDC; - UINT state = lpDIS->itemState; - - // first, draw the background - HBRUSH hbrushBackground = ::CreateSolidBrush(colBg); - - FillRect(hdc, &rectBtn, hbrushBackground); - - // draw the border for the current state - bool selected = (state & ODS_SELECTED) != 0; - if ( !selected ) - { - wxPanel *panel = wxDynamicCast(GetParent(), wxPanel); - if ( panel ) - { - selected = panel->GetDefaultItem() == this; - } - } - bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0; - - DrawButtonFrame(hdc, rectBtn, selected, pushed); - - // draw the focus rect if needed - if ( state & ODS_FOCUS ) - { - RECT rectFocus; - CopyRect(&rectFocus, &rectBtn); - - // I don't know where does this constant come from, but this is how - // Windows draws them - InflateRect(&rectFocus, -4, -4); - - DrawFocusRect(hdc, &rectFocus); - } - - if ( pushed ) + // show/hide UAC symbol on Windows Vista and later + if ( wxGetWinVersion() >= wxWinVersion_6 ) { - // the label is shifted by 1 pixel to create "pushed" effect - OffsetRect(&rectBtn, 1, 1); + m_authNeeded = show; + ::SendMessage(GetHwnd(), BCM_SETSHIELD, 0, show); + InvalidateBestSize(); } - - DrawButtonText(hdc, &rectBtn, GetLabel(), - state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT) - : colFg); - - ::DeleteObject(hbrushBackground); - - return TRUE; } -#endif // __WIN32__ - #endif // wxUSE_BUTTON