X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2a47d3c193a8358f9be6a9249af28b6cb10eacff..0bbe61b8c18a1795189f0cf73cc61c14a0fb846d:/src/msw/button.cpp?ds=sidebyside diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 764c28db6f..9ccd939cc1 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -1,196 +1,897 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: 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 ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "button.h" -#endif +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#ifndef WX_PRECOMP +#if wxUSE_BUTTON + #include "wx/button.h" -#include "wx/brush.h" + +#ifndef WX_PRECOMP + #include "wx/app.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" #endif +#include "wx/stockitem.h" +#include "wx/tokenzr.h" #include "wx/msw/private.h" -#if !USE_SHARED_LIBRARY +#if wxUSE_UXTHEME + #include "wx/msw/uxtheme.h" + + // no need to include tmschema.h + #ifndef BP_PUSHBUTTON + #define BP_PUSHBUTTON 1 + + #define PBS_NORMAL 1 + #define PBS_HOT 2 + #define PBS_PRESSED 3 + #define PBS_DISABLED 4 + #define PBS_DEFAULTED 5 + + #define TMT_CONTENTMARGINS 3602 + #endif +#endif // wxUSE_UXTHEME + +#ifndef WM_THEMECHANGED + #define WM_THEMECHANGED 0x031A +#endif + +#ifndef ODS_NOACCEL + #define ODS_NOACCEL 0x0100 +#endif + +#ifndef ODS_NOFOCUSRECT + #define ODS_NOFOCUSRECT 0x0200 +#endif + +// ---------------------------------------------------------------------------- +// macros +// ---------------------------------------------------------------------------- + +#if wxUSE_EXTENDED_RTTI + +WX_DEFINE_FLAGS( wxButtonStyle ) + +wxBEGIN_FLAGS( wxButtonStyle ) + // new style border flags, we put them first to + // use them for streaming out + wxFLAGS_MEMBER(wxBORDER_SIMPLE) + wxFLAGS_MEMBER(wxBORDER_SUNKEN) + wxFLAGS_MEMBER(wxBORDER_DOUBLE) + wxFLAGS_MEMBER(wxBORDER_RAISED) + wxFLAGS_MEMBER(wxBORDER_STATIC) + wxFLAGS_MEMBER(wxBORDER_NONE) + + // old style border flags + wxFLAGS_MEMBER(wxSIMPLE_BORDER) + wxFLAGS_MEMBER(wxSUNKEN_BORDER) + wxFLAGS_MEMBER(wxDOUBLE_BORDER) + wxFLAGS_MEMBER(wxRAISED_BORDER) + wxFLAGS_MEMBER(wxSTATIC_BORDER) + wxFLAGS_MEMBER(wxBORDER) + + // standard window styles + wxFLAGS_MEMBER(wxTAB_TRAVERSAL) + wxFLAGS_MEMBER(wxCLIP_CHILDREN) + wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW) + wxFLAGS_MEMBER(wxWANTS_CHARS) + wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE) + wxFLAGS_MEMBER(wxALWAYS_SHOW_SB ) + wxFLAGS_MEMBER(wxVSCROLL) + wxFLAGS_MEMBER(wxHSCROLL) + + wxFLAGS_MEMBER(wxBU_LEFT) + wxFLAGS_MEMBER(wxBU_RIGHT) + wxFLAGS_MEMBER(wxBU_TOP) + wxFLAGS_MEMBER(wxBU_BOTTOM) + wxFLAGS_MEMBER(wxBU_EXACTFIT) +wxEND_FLAGS( wxButtonStyle ) + +IMPLEMENT_DYNAMIC_CLASS_XTI(wxButton, wxControl,"wx/button.h") + +wxBEGIN_PROPERTIES_TABLE(wxButton) + wxEVENT_PROPERTY( Click , wxEVT_COMMAND_BUTTON_CLICKED , wxCommandEvent) + + wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) + wxPROPERTY( Label, wxString , SetLabel, GetLabel, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) + + wxPROPERTY_FLAGS( WindowStyle , wxButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style + +wxEND_PROPERTIES_TABLE() + +wxBEGIN_HANDLERS_TABLE(wxButton) +wxEND_HANDLERS_TABLE() + +wxCONSTRUCTOR_6( wxButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle ) + + +#else IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) #endif +// 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) -// Buttons +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// 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) +{ + 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 + if ( label.find(_T('\n')) != wxString::npos ) + { + msStyle |= BS_MULTILINE; + } + + return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle); +} -bool wxButton::MSWCommand(WXUINT param, WXWORD id) +wxButton::~wxButton() { - if (param == BN_CLICKED || (param == 1)) // 1 for accelerator - { - wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id); - event.SetEventObject(this); - ProcessCommand(event); - return TRUE; - } - else return FALSE; -} - -bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label, - const wxPoint& pos, - const wxSize& size, long style, - const wxValidator& validator, - const wxString& name) + wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow); + if ( tlw && tlw->GetTmpDefaultItem() == this ) + { + UnsetTmpDefault(); + } +} + +// ---------------------------------------------------------------------------- +// 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) +{ + // update BS_MULTILINE style depending on the new label (resetting it + // doesn't seem to do anything very useful but it shouldn't hurt and we do + // have to set it whenever the label becomes multi line as otherwise it + // wouldn't be shown correctly) + long styleOld = ::GetWindowLong(GetHwnd(), GWL_STYLE), + styleNew; + if ( label.find(_T('\n')) != wxString::npos ) + styleNew = styleOld | BS_MULTILINE; + else + styleNew = styleOld & ~BS_MULTILINE; + + if ( styleNew != styleOld ) + ::SetWindowLong(GetHwnd(), GWL_STYLE, styleNew); + + wxButtonBase::SetLabel(label); +} + +// ---------------------------------------------------------------------------- +// size management including autosizing +// ---------------------------------------------------------------------------- + +wxSize wxButton::DoGetBestSize() const +{ + wxClientDC dc(wx_const_cast(wxButton *, this)); + dc.SetFont(GetFont()); + + wxCoord wBtn, + hBtn; + dc.GetMultiLineTextExtent(GetLabelText(), &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; + } + + wxSize best(wBtn, hBtn); + CacheBestSize(best); + return best; +} + +/* static */ +wxSize wxButtonBase::GetDefaultSize() { - SetName(name); - SetValidator(validator); + 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; +} - parent->AddChild((wxButton *)this); - m_backgroundColour = parent->GetBackgroundColour() ; - m_foregroundColour = parent->GetForegroundColour() ; +// ---------------------------------------------------------------------------- +// default button handling +// ---------------------------------------------------------------------------- - m_windowStyle = (long&)style; +/* + "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(); - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; + // ... and Windows + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); + SetDefaultStyle(this, true); - if (id == -1) - m_windowId = NewControlId(); - else - m_windowId = id; + return winOldDefault; +} - DWORD exStyle = MakeExtendedStyle(m_windowStyle); - HWND wx_button = - CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); +// 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; - m_hWnd = (WXHWND)wx_button; + break; + } - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND)wx_button); + win = parent; + } - SetFont(parent->GetFont()); + wxASSERT_MSG( win, _T("button without top level parent?") ); - SetSize(x, y, width, height); - ShowWindow(wx_button, SW_SHOW); + wxTopLevelWindow * const tlw = wxDynamicCast(win, wxTopLevelWindow); + wxASSERT_MSG( tlw, _T("logic error in GetTLWParentIfNotBeingDeleted()") ); - return TRUE; + return tlw; } -void wxButton::DoSetSize(int x, int y, int width, int height, int sizeFlags) +// set this button as being currently default +void wxButton::SetTmpDefault() { - int currentX, currentY; - GetPosition(¤tX, ¤tY); - int x1 = x; - int y1 = y; - if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - x1 = currentX; - if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - y1 = currentY; + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + if ( !tlw ) + return; + + wxWindow *winOldDefault = tlw->GetDefaultItem(); + tlw->SetTmpDefaultItem(this); - AdjustForParentClientOrigin(x1, y1, sizeFlags); + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); + SetDefaultStyle(this, true); +} - int actualWidth = width; - int actualHeight = height; - int ww, hh; - GetSize(&ww, &hh); +// unset this button as currently default, it may still stay permanent default +void wxButton::UnsetTmpDefault() +{ + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + if ( !tlw ) + return; - int current_width; - int cyf; - char buf[300]; - GetWindowText((HWND) GetHWND(), buf, 300); - GetTextExtent(buf, ¤t_width, &cyf,NULL,NULL, - & this->GetFont()); + tlw->SetTmpDefaultItem(NULL); - // If we're prepared to use the existing width, then... - if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH)) - actualWidth = ww; - else if (width == -1) - { - int cx; - int cy; - wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont()); - actualWidth = (int)(current_width + 3*cx) ; - } - - // If we're prepared to use the existing height, then... - if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT)) - actualHeight = hh; - else if (height == -1) - { - actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf); - } + wxWindow *winOldDefault = tlw->GetDefaultItem(); - MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE); + SetDefaultStyle(this, false); + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true); } -void wxButton::SetDefault(void) +/* static */ +void +wxButton::SetDefaultStyle(wxButton *btn, bool on) { - wxWindow *parent = (wxWindow *)GetParent(); - if (parent) - parent->SetDefaultItem(this); + // 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, _T("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 +// ---------------------------------------------------------------------------- - if (parent) - { - SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L); - } +bool wxButton::SendClickEvent() +{ + wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId()); + event.SetEventObject(this); - SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L); + return ProcessCommand(event); } -wxString wxButton::GetLabel(void) const +void wxButton::Command(wxCommandEvent & event) { - GetWindowText((HWND) GetHWND(), wxBuffer, 300); - return wxString(wxBuffer); + ProcessCommand(event); } -void wxButton::SetLabel(const wxString& label) +// ---------------------------------------------------------------------------- +// event/message handlers +// ---------------------------------------------------------------------------- + +bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - SetWindowText((HWND) GetHWND(), (const char *) label); + 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 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 + // in order to not get 3 EVT_BUTTON events. If this is a problem + // then we need to figure out which version of the comctl32 changed + // this behaviour and test for it. + + case 1: // message came from an accelerator + case BN_CLICKED: // normal buttons send this + processed = SendClickEvent(); + break; + } + + return processed; } -WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { -/* - WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam); -// ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT)); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), - GetForegroundColour().Blue())); + // 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 ) + { + SetTmpDefault(); + + // let the default processing take place too + } + else if ( nMsg == WM_KILLFOCUS ) + { + 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 + } +#if wxUSE_UXTHEME + else if ( nMsg == WM_THEMECHANGED ) + { + // need to recalculate the best size here + // as the theme size might have changed + InvalidateBestSize(); + } + else if ( wxUxThemeEngine::GetIfActive() ) + { + // we need to Refresh() if mouse has entered or left window + // so we can update the hot tracking state + // must use m_mouseInWindow here instead of IsMouseInWindow() + // since we need to know the first time the mouse enters the window + // and IsMouseInWindow() would return true in this case + if ( ( nMsg == WM_MOUSEMOVE && !m_mouseInWindow ) || + nMsg == WM_MOUSELEAVE ) + { + Refresh(); + } + } +#endif // wxUSE_UXTHEME + + // let the base class do all real processing + return wxControl::MSWWindowProc(nMsg, wParam, lParam); +} - return hBrush; -*/ - // This doesn't in fact seem to make any difference at all - buttons are always - // the same colour. - ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue())); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue())); +// ---------------------------------------------------------------------------- +// owner-drawn buttons support +// ---------------------------------------------------------------------------- + +// drawing helpers - wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); +static void DrawButtonText(HDC hdc, + RECT *pRect, + const wxString& text, + COLORREF col) +{ + COLORREF colOld = SetTextColor(hdc, col); + int modeOld = SetBkMode(hdc, TRANSPARENT); + + if ( text.find(_T('\n')) != wxString::npos ) + { + // draw multiline label + + // first we need to compute its bounding rect + RECT rc; + ::CopyRect(&rc, pRect); + ::DrawText(hdc, text.wx_str(), text.length(), &rc, + DT_CENTER | DT_CALCRECT); + + // now center this rect inside the entire button area + const LONG w = rc.right - rc.left; + const LONG h = rc.bottom - rc.top; + rc.left = (pRect->right - pRect->left)/2 - w/2; + rc.right = rc.left+w; + rc.top = (pRect->bottom - pRect->top)/2 - h/2; + rc.bottom = rc.top+h; + + ::DrawText(hdc, text.wx_str(), text.length(), &rc, DT_CENTER); + } + else // single line label + { + // Note: we must have DT_SINGLELINE for DT_VCENTER to work. + ::DrawText(hdc, text.wx_str(), text.length(), pRect, + DT_SINGLELINE | DT_CENTER | DT_VCENTER); + } + + SetBkMode(hdc, modeOld); + SetTextColor(hdc, colOld); +} - // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush - // has a zero usage count. - // NOT NOW; CHANGED. -// backgroundBrush->RealizeResource(); - return (WXHBRUSH) backgroundBrush->GetResourceHandle(); +static void DrawRect(HDC hdc, const RECT& r) +{ + wxDrawLine(hdc, r.left, r.top, r.right, r.top); + wxDrawLine(hdc, r.right, r.top, r.right, r.bottom); + wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom); + wxDrawLine(hdc, r.left, r.bottom, r.left, r.top); } -void wxButton::Command (wxCommandEvent & event) +void wxButton::MakeOwnerDrawn() { - ProcessCommand (event); + 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); + } + + wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom); + wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1); + + (void)SelectObject(hdc, hpenWhite); + wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top); + wxDrawLine(hdc, r.left, r.top, r.right, r.top); + + (void)SelectObject(hdc, hpenLightGr); + wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1); + wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1); + + (void)SelectObject(hdc, hpenGrey); + wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1); + wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top); + } + + (void)SelectObject(hdc, hpenOld); + DeleteObject(hpenWhite); + DeleteObject(hpenLightGr); + DeleteObject(hpenGrey); + DeleteObject(hpenBlack); +} + +#if wxUSE_UXTHEME +static +void MSWDrawXPBackground(wxButton *button, WXDRAWITEMSTRUCT *wxdis) +{ + LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; + HDC hdc = lpDIS->hDC; + UINT state = lpDIS->itemState; + RECT rectBtn; + CopyRect(&rectBtn, &lpDIS->rcItem); + + wxUxThemeHandle theme(button, L"BUTTON"); + int iState; + + if ( state & ODS_SELECTED ) + { + iState = PBS_PRESSED; + } + else if ( button->HasCapture() || button->IsMouseInWindow() ) + { + iState = PBS_HOT; + } + else if ( state & ODS_FOCUS ) + { + iState = PBS_DEFAULTED; + } + else if ( state & ODS_DISABLED ) + { + iState = PBS_DISABLED; + } + else + { + iState = PBS_NORMAL; + } + + // draw parent background if needed + if ( wxUxThemeEngine::Get()->IsThemeBackgroundPartiallyTransparent(theme, + BP_PUSHBUTTON, + iState) ) + { + wxUxThemeEngine::Get()->DrawThemeParentBackground(GetHwndOf(button), hdc, &rectBtn); + } + + // draw background + wxUxThemeEngine::Get()->DrawThemeBackground(theme, hdc, BP_PUSHBUTTON, iState, + &rectBtn, NULL); + + // calculate content area margins + MARGINS margins; + wxUxThemeEngine::Get()->GetThemeMargins(theme, hdc, BP_PUSHBUTTON, iState, + TMT_CONTENTMARGINS, &rectBtn, &margins); + RECT rectClient; + ::CopyRect(&rectClient, &rectBtn); + ::InflateRect(&rectClient, -margins.cxLeftWidth, -margins.cyTopHeight); + + // if focused and !nofocus rect + if ( (state & ODS_FOCUS) && !(state & ODS_NOFOCUSRECT) ) + { + DrawFocusRect(hdc, &rectClient); + } + + if ( button->UseBgCol() ) + { + COLORREF colBg = wxColourToRGB(button->GetBackgroundColour()); + HBRUSH hbrushBackground = ::CreateSolidBrush(colBg); + + // don't overwrite the focus rect + ::InflateRect(&rectClient, -1, -1); + FillRect(hdc, &rectClient, hbrushBackground); + ::DeleteObject(hbrushBackground); + } +} +#endif // wxUSE_UXTHEME + +bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) +{ + LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; + HDC hdc = lpDIS->hDC; + UINT state = lpDIS->itemState; + RECT rectBtn; + CopyRect(&rectBtn, &lpDIS->rcItem); + +#if wxUSE_UXTHEME + if ( wxUxThemeEngine::GetIfActive() ) + { + MSWDrawXPBackground(this, wxdis); + } + else +#endif // wxUSE_UXTHEME + { + COLORREF colBg = wxColourToRGB(GetBackgroundColour()); + + // first, draw the background + HBRUSH hbrushBackground = ::CreateSolidBrush(colBg); + FillRect(hdc, &rectBtn, hbrushBackground); + ::DeleteObject(hbrushBackground); + + // draw the border for the current state + bool selected = (state & ODS_SELECTED) != 0; + if ( !selected ) + { + wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow); + if ( tlw ) + { + selected = tlw->GetDefaultItem() == this; + } + } + bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0; + + DrawButtonFrame(hdc, rectBtn, selected, pushed); + + // if focused and !nofocus rect + if ( (state & ODS_FOCUS) && !(state & ODS_NOFOCUSRECT) ) + { + 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 ) + { + // the label is shifted by 1 pixel to create "pushed" effect + OffsetRect(&rectBtn, 1, 1); + } + } + + COLORREF colFg = wxColourToRGB(GetForegroundColour()); + if ( state & ODS_DISABLED ) colFg = GetSysColor(COLOR_GRAYTEXT) ; + wxString label = GetLabel(); + if ( state & ODS_NOACCEL ) label = GetLabelText() ; + DrawButtonText(hdc, &rectBtn, label, colFg); + + return true; +} +#endif // wxUSE_BUTTON