X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fd71308fc89eac2dd212b715eba68a993fa78f53..81c9effa8462662263c3b4eac2cfae1ef5caae2c:/src/msw/button.cpp diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 03200cfacf..5cb83273d7 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -1,199 +1,506 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: button.cpp +// Name: 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 +// Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ -#pragma implementation "button.h" + #pragma implementation "button.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_BUTTON + #ifndef WX_PRECOMP -#include "wx/button.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" #endif #include "wx/msw/private.h" -#if !USE_SHARED_LIBRARY +// ---------------------------------------------------------------------------- +// macros +// ---------------------------------------------------------------------------- + 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 - -bool wxButton::MSWCommand(WXUINT param, WXWORD id) +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// creation/destruction +// ---------------------------------------------------------------------------- + +bool wxButton::Create(wxWindow *parent, + wxWindowID id, + const wxString& label, + const wxPoint& pos, + const wxSize& size, + long style, + const wxValidator& validator, + const wxString& name) { - 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; + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return FALSE; + + return MSWCreateControl(_T("BUTTON"), label, pos, size, style); } -bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label, - const wxPoint& pos, - const wxSize& size, long style, - const wxValidator& validator, - const wxString& name) +wxButton::~wxButton() { - SetName(name); - SetValidator(validator); +} + +// ---------------------------------------------------------------------------- +// flags +// ---------------------------------------------------------------------------- - parent->AddChild((wxButton *)this); - m_backgroundColour = parent->GetBackgroundColour() ; - m_foregroundColour = parent->GetForegroundColour() ; +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; +} - m_windowStyle = (long&)style; +// ---------------------------------------------------------------------------- +// size management including autosizing +// ---------------------------------------------------------------------------- - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; +wxSize wxButton::DoGetBestSize() const +{ + wxString label = wxGetWindowText(GetHWND()); + int wBtn; + GetTextExtent(label, &wBtn, NULL); - if (id == -1) - m_windowId = NewControlId(); - else - m_windowId = id; + int wChar, hChar; + wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont()); - 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); + // add a margin - the button is wider than just its label + wBtn += 3*wChar; -#if CTL3D -// if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS)) -// Ctl3dSubclassCtl(wx_button); -#endif + // the button height is proportional to the height of the font used + int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar); - m_hWnd = (WXHWND)wx_button; + wxSize sz = GetDefaultSize(); + if (wBtn > sz.x) sz.x = wBtn; + if (hBtn > sz.y) sz.y = hBtn; - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND)wx_button); + return sz; +} - SetFont(* parent->GetFont()); +/* static */ +wxSize wxButtonBase::GetDefaultSize() +{ + 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; +} - SetSize(x, y, width, height); - ShowWindow(wx_button, SW_SHOW); +// ---------------------------------------------------------------------------- +// set this button as the default one in its panel +// ---------------------------------------------------------------------------- - return TRUE; +void wxButton::SetDefault() +{ + wxWindow *parent = GetParent(); + wxButton *btnOldDefault; + if ( parent ) + { + 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(); + } + } + + // 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); + } } -void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags) +// ---------------------------------------------------------------------------- +// helpers +// ---------------------------------------------------------------------------- + +bool wxButton::SendClickEvent() { - 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; + wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId()); + event.SetEventObject(this); - AdjustForParentClientOrigin(x1, y1, sizeFlags); + return ProcessCommand(event); +} - int actualWidth = width; - int actualHeight = height; - int ww, hh; - GetSize(&ww, &hh); +void wxButton::Command(wxCommandEvent & event) +{ + ProcessCommand(event); +} - int current_width; - int cyf; - char buf[300]; - GetWindowText((HWND) GetHWND(), buf, 300); - GetTextExtent(buf, ¤t_width, &cyf,NULL,NULL,GetFont()); +// ---------------------------------------------------------------------------- +// event/message handlers +// ---------------------------------------------------------------------------- - // 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,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); - } +bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +{ + bool processed = FALSE; + switch ( param ) + { + 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; + } + + return processed; +} - MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE); +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); } -void wxButton::SetDefault(void) +// ---------------------------------------------------------------------------- +// owner-drawn buttons support +// ---------------------------------------------------------------------------- + +#ifdef __WIN32__ + +// drawing helpers + +static void DrawButtonText(HDC hdc, + RECT *pRect, + const wxString& text, + COLORREF col) { - wxWindow *parent = (wxWindow *)GetParent(); - if (parent) - parent->SetDefaultItem(this); + COLORREF colOld = SetTextColor(hdc, col); + int modeOld = SetBkMode(hdc, TRANSPARENT); - if (parent) - { - SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L); - } + DrawText(hdc, text, text.length(), pRect, + DT_CENTER | DT_VCENTER | DT_SINGLELINE); - SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L); + SetBkMode(hdc, modeOld); + SetTextColor(hdc, colOld); } -wxString wxButton::GetLabel(void) const +static void DrawRect(HDC hdc, const RECT& r) { - GetWindowText((HWND) GetHWND(), wxBuffer, 300); - return wxString(wxBuffer); + 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::SetLabel(const wxString& label) +void wxButton::MakeOwnerDrawn() { - SetWindowText((HWND) GetHWND(), (const char *) label); + long style = GetWindowLong(GetHwnd(), GWL_STYLE); + if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) + { + // make it so + style |= BS_OWNERDRAW; + SetWindowLong(GetHwnd(), GWL_STYLE, style); + } } -WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +bool wxButton::SetBackgroundColour(const wxColour &colour) { -/* - WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam); -// ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT)); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), - GetForegroundColour().Blue())); + if ( !wxControl::SetBackgroundColour(colour) ) + { + // nothing to do + return FALSE; + } - 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())); + MakeOwnerDrawn(); + + Refresh(); + + return TRUE; +} + +bool wxButton::SetForegroundColour(const wxColour &colour) +{ + if ( !wxControl::SetForegroundColour(colour) ) + { + // nothing to do + return FALSE; + } - wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); + MakeOwnerDrawn(); - // 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(); + 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); } -void wxButton::Command (wxCommandEvent & event) +bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) { - ProcessCommand (event); + 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