X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e1f36ff823aa21414b756cbe451853d1f1338fd9..2d956b58023a4955313a1c1531bc70a0deb0b831:/src/msw/button.cpp diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 5138afaf6d..2cafeca17e 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: button.cpp +// Name: msw/button.cpp // Purpose: wxButton // Author: Julian Smart // Modified by: @@ -16,6 +16,7 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- + #ifdef __GNUG__ #pragma implementation "button.h" #endif @@ -27,9 +28,15 @@ #pragma hdrstop #endif +#if wxUSE_BUTTON + #ifndef WX_PRECOMP #include "wx/button.h" #include "wx/brush.h" + #include "wx/panel.h" + #include "wx/bmpbuttn.h" + #include "wx/settings.h" + #include "wx/dcscreen.h" #endif #include "wx/msw/private.h" @@ -38,9 +45,7 @@ // macros // ---------------------------------------------------------------------------- -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) -#endif +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 @@ -63,57 +68,71 @@ bool wxButton::Create(wxWindow *parent, const wxValidator& validator, const wxString& name) { - if ( !CreateBase(parent, id, pos, size, style, name) ) + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) return FALSE; - SetValidator(validator); - - parent->AddChild((wxButton *)this); - - m_backgroundColour = parent->GetBackgroundColour() ; - m_foregroundColour = parent->GetForegroundColour() ; - - m_hWnd = (WXHWND)CreateWindowEx - ( - MakeExtendedStyle(m_windowStyle), - _T("BUTTON"), - label, - WS_VISIBLE | WS_TABSTOP | WS_CHILD, - 0, 0, 0, 0, - GetWinHwnd(parent), - (HMENU)m_windowId, - wxGetInstance(), - NULL - ); - - // Subclass again for purposes of dialog editing mode - SubclassWin(m_hWnd); - - SetFont(parent->GetFont()); - - SetSize(pos.x, pos.y, size.x, size.y); + 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__ - 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; } // ---------------------------------------------------------------------------- // size management including autosizing // ---------------------------------------------------------------------------- -wxSize wxButton::DoGetBestSize() +wxSize wxButton::DoGetBestSize() const { wxString label = wxGetWindowText(GetHWND()); int wBtn; @@ -128,21 +147,36 @@ wxSize wxButton::DoGetBestSize() // the button height is proportional to the height of the font used int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar); - return wxSize(wBtn, hBtn); + wxSize sz = GetDefaultSize(); + if (wBtn > sz.x) sz.x = wBtn; + if (hBtn > sz.y) sz.y = hBtn; + + return sz; } /* static */ -wxSize wxButton::GetDefaultSize() +wxSize wxButtonBase::GetDefaultSize() { - // the base unit is the height of the system GUI font - int wChar, hChar; - wxGetCharSize(0, &wChar, &hChar, NULL); + static wxSize s_sizeBtn; - // the button height is proportional to the height of the font used - int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar); + 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; + } - // and the width/height ration is 75/23 - return wxSize((75 * hBtn) / 23, hBtn); + return s_sizeBtn; } // ---------------------------------------------------------------------------- @@ -152,16 +186,46 @@ wxSize wxButton::GetDefaultSize() void wxButton::SetDefault() { wxWindow *parent = GetParent(); - wxPanel *panel = wxDynamicCast(parent, wxPanel); - if ( panel ) - panel->SetDefaultItem(this); - + wxButton *btnOldDefault; if ( parent ) { - SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L); + wxWindow *winOldDefault = parent->SetDefaultItem(this); + btnOldDefault = wxDynamicCast(winOldDefault, wxButton); + + ::SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L); + } + else // is a button without parent really normal? + { + btnOldDefault = NULL; + } + + if ( btnOldDefault && btnOldDefault != this ) + { + // remove the BS_DEFPUSHBUTTON style from the other button + 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); + } + else + { + // redraw the button - it will notice itself that it's not the + // default one any longer + btnOldDefault->Refresh(); + } } - SendMessage(GetHwnd(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L); + // set this button as the default + long style = GetWindowLong(GetHwnd(), GWL_STYLE); + if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) + { + style |= BS_DEFPUSHBUTTON; + SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L); + } } // ---------------------------------------------------------------------------- @@ -185,13 +249,14 @@ void wxButton::Command(wxCommandEvent & event) // event/message handlers // ---------------------------------------------------------------------------- -bool wxButton::MSWCommand(WXUINT param, WXWORD id) +bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { bool processed = FALSE; switch ( param ) { - case 1: // 1 for accelerator - case BN_CLICKED: + case 1: // message came from an accelerator + case BN_CLICKED: // normal buttons send this + case BN_DOUBLECLICKED: // owner-drawn ones also send this processed = SendClickEvent(); break; } @@ -199,15 +264,260 @@ bool wxButton::MSWCommand(WXUINT param, WXWORD id) return processed; } -WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, - WXHWND pWnd, - WXUINT nCtlColor, - WXUINT message, - WXWPARAM wParam, - WXLPARAM lParam) +long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) +{ + // when we receive focus, we want to become the default button in our + // parent panel + if ( nMsg == WM_SETFOCUS ) + { + SetDefault(); + + // let the default processign take place too + } + 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 conitnue with processing the message normally as well + } + + // let the base class do all real processing + return wxControl::MSWWindowProc(nMsg, wParam, lParam); +} + +// ---------------------------------------------------------------------------- +// owner-drawn buttons support +// ---------------------------------------------------------------------------- + +#ifdef __WIN32__ + +// drawing helpers + +static void DrawButtonText(HDC hdc, + RECT *pRect, + const wxString& text, + COLORREF col) { - wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); + COLORREF colOld = SetTextColor(hdc, col); + int modeOld = SetBkMode(hdc, TRANSPARENT); + + DrawText(hdc, text, text.length(), pRect, + DT_CENTER | DT_VCENTER | DT_SINGLELINE); - return (WXHBRUSH) backgroundBrush->GetResourceHandle(); + 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() +{ + 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); +} + +bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) +{ + 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 ) + { + // the label is shifted by 1 pixel to create "pushed" effect + OffsetRect(&rectBtn, 1, 1); + } + + DrawButtonText(hdc, &rectBtn, GetLabel(), + state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT) + : colFg); + + ::DeleteObject(hbrushBackground); + + return TRUE; +} + +#endif // __WIN32__ + +#endif // wxUSE_BUTTON +