/* File: button.c -- Button type widgets * * Copyright (C) 1993 Johannes Ruscheinski * Copyright (C) 1993 David Metcalfe * Copyright (C) 1994 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * NOTES * * This code was audited for completeness against the documented features * of Comctl32.dll version 6.0 on Oct. 3, 2004, by Dimitrie O. Paun. * * Unless otherwise noted, we believe this code to be complete, as per * the specification mentioned above. * If you discover missing features, or bugs, please note them below. * * TODO * Styles * - BS_NOTIFY: is it complete? * - BS_RIGHTBUTTON: same as BS_LEFTTEXT * - BS_TYPEMASK * * Messages * - WM_CHAR: Checks a (manual or automatic) check box on '+' or '=', clears it on '-' key. * - WM_SETFOCUS: For (manual or automatic) radio buttons, send the parent window BN_CLICKED * - WM_NCCREATE: Turns any BS_OWNERDRAW button into a BS_PUSHBUTTON button. * - WM_SYSKEYUP * - BCM_GETIDEALSIZE * - BCM_GETIMAGELIST * - BCM_GETTEXTMARGIN * - BCM_SETIMAGELIST * - BCM_SETTEXTMARGIN * * Notifications * - BCN_HOTITEMCHANGE * - BN_DISABLE * - BN_PUSHED/BN_HILITE * + BN_KILLFOCUS: is it OK? * - BN_PAINT * + BN_SETFOCUS: is it OK? * - BN_UNPUSHED/BN_UNHILITE * - NM_CUSTOMDRAW * * Structures/Macros/Definitions * - BUTTON_IMAGELIST * - NMBCHOTITEM * - Button_GetIdealSize * - Button_GetImageList * - Button_GetTextMargin * - Button_SetImageList * - Button_SetTextMargin */ #include <stdarg.h> #include <string.h> #include <stdlib.h> #define OEMRESOURCE #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "wine/winuser16.h" #include "controls.h" #include "win.h" #include "user_private.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(button); /* GetWindowLong offsets for window extra information */ #define STATE_GWL_OFFSET 0 #define HFONT_GWL_OFFSET (sizeof(LONG)) #define HIMAGE_GWL_OFFSET (HFONT_GWL_OFFSET+sizeof(HFONT)) #define NB_EXTRA_BYTES (HIMAGE_GWL_OFFSET+sizeof(HANDLE)) /* Button state values */ #define BUTTON_UNCHECKED 0x00 #define BUTTON_CHECKED 0x01 #define BUTTON_3STATE 0x02 #define BUTTON_HIGHLIGHTED 0x04 #define BUTTON_HASFOCUS 0x08 #define BUTTON_NSTATES 0x0F /* undocumented flags */ #define BUTTON_BTNPRESSED 0x40 #define BUTTON_UNKNOWN2 0x20 #define BUTTON_UNKNOWN3 0x10 #define BUTTON_NOTIFY_PARENT(hWnd, code) \ do { /* Notify parent which has created this button control */ \ TRACE("notification " #code " sent to hwnd=%p\n", GetParent(hWnd)); \ SendMessageW(GetParent(hWnd), WM_COMMAND, \ MAKEWPARAM(GetWindowLongPtrW((hWnd),GWLP_ID), (code)), \ (LPARAM)(hWnd)); \ } while(0) static UINT BUTTON_CalcLabelRect( HWND hwnd, HDC hdc, RECT *rc ); static void PB_Paint( HWND hwnd, HDC hDC, UINT action ); static void CB_Paint( HWND hwnd, HDC hDC, UINT action ); static void GB_Paint( HWND hwnd, HDC hDC, UINT action ); static void UB_Paint( HWND hwnd, HDC hDC, UINT action ); static void OB_Paint( HWND hwnd, HDC hDC, UINT action ); static void BUTTON_CheckAutoRadioButton( HWND hwnd ); static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); #define MAX_BTN_TYPE 12 static const WORD maxCheckState[MAX_BTN_TYPE] = { BUTTON_UNCHECKED, /* BS_PUSHBUTTON */ BUTTON_UNCHECKED, /* BS_DEFPUSHBUTTON */ BUTTON_CHECKED, /* BS_CHECKBOX */ BUTTON_CHECKED, /* BS_AUTOCHECKBOX */ BUTTON_CHECKED, /* BS_RADIOBUTTON */ BUTTON_3STATE, /* BS_3STATE */ BUTTON_3STATE, /* BS_AUTO3STATE */ BUTTON_UNCHECKED, /* BS_GROUPBOX */ BUTTON_UNCHECKED, /* BS_USERBUTTON */ BUTTON_CHECKED, /* BS_AUTORADIOBUTTON */ BUTTON_UNCHECKED, /* Not defined */ BUTTON_UNCHECKED /* BS_OWNERDRAW */ }; typedef void (*pfPaint)( HWND hwnd, HDC hdc, UINT action ); static const pfPaint btnPaintFunc[MAX_BTN_TYPE] = { PB_Paint, /* BS_PUSHBUTTON */ PB_Paint, /* BS_DEFPUSHBUTTON */ CB_Paint, /* BS_CHECKBOX */ CB_Paint, /* BS_AUTOCHECKBOX */ CB_Paint, /* BS_RADIOBUTTON */ CB_Paint, /* BS_3STATE */ CB_Paint, /* BS_AUTO3STATE */ GB_Paint, /* BS_GROUPBOX */ UB_Paint, /* BS_USERBUTTON */ CB_Paint, /* BS_AUTORADIOBUTTON */ NULL, /* Not defined */ OB_Paint /* BS_OWNERDRAW */ }; static HBITMAP hbitmapCheckBoxes = 0; static WORD checkBoxWidth = 0, checkBoxHeight = 0; /********************************************************************* * button class descriptor */ static const WCHAR buttonW[] = {'B','u','t','t','o','n',0}; const struct builtin_class_descr BUTTON_builtin_class = { buttonW, /* name */ CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */ ButtonWndProcA, /* procA */ ButtonWndProcW, /* procW */ NB_EXTRA_BYTES, /* extra */ IDC_ARROW, /* cursor */ 0 /* brush */ }; static inline LONG get_button_state( HWND hwnd ) { return GetWindowLongW( hwnd, STATE_GWL_OFFSET ); } static inline void set_button_state( HWND hwnd, LONG state ) { SetWindowLongW( hwnd, STATE_GWL_OFFSET, state ); } static inline HFONT get_button_font( HWND hwnd ) { return (HFONT)GetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET ); } static inline void set_button_font( HWND hwnd, HFONT font ) { SetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET, (LONG_PTR)font ); } static inline UINT get_button_type( LONG window_style ) { return (window_style & 0x0f); } /* paint a button of any type */ static inline void paint_button( HWND hwnd, LONG style, UINT action ) { if (btnPaintFunc[style] && IsWindowVisible(hwnd)) { HDC hdc = GetDC( hwnd ); btnPaintFunc[style]( hwnd, hdc, action ); ReleaseDC( hwnd, hdc ); } } /* retrieve the button text; returned buffer must be freed by caller */ static inline WCHAR *get_button_text( HWND hwnd ) { INT len = 512; WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) ); if (buffer) InternalGetWindowText( hwnd, buffer, len + 1 ); return buffer; } static void setup_clipping( HWND hwnd, HDC hdc ) { RECT rc; GetClientRect( hwnd, &rc ); DPtoLP( hdc, (POINT *)&rc, 2 ); IntersectClipRect( hdc, rc.left, rc.top, rc.right, rc.bottom ); } /*********************************************************************** * ButtonWndProc_common */ static LRESULT ButtonWndProc_common(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL unicode ) { RECT rect; POINT pt; LONG style = GetWindowLongW( hWnd, GWL_STYLE ); UINT btn_type = get_button_type( style ); LONG state; HANDLE oldHbitmap; pt.x = (short)LOWORD(lParam); pt.y = (short)HIWORD(lParam); switch (uMsg) { case WM_GETDLGCODE: switch(btn_type) { case BS_USERBUTTON: case BS_PUSHBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON; case BS_DEFPUSHBUTTON: return DLGC_BUTTON | DLGC_DEFPUSHBUTTON; case BS_RADIOBUTTON: case BS_AUTORADIOBUTTON: return DLGC_BUTTON | DLGC_RADIOBUTTON; case BS_GROUPBOX: return DLGC_STATIC; default: return DLGC_BUTTON; } case WM_ENABLE: paint_button( hWnd, btn_type, ODA_DRAWENTIRE ); break; case WM_CREATE: if (!hbitmapCheckBoxes) { BITMAP bmp; hbitmapCheckBoxes = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_CHECKBOXES)); GetObjectW( hbitmapCheckBoxes, sizeof(bmp), &bmp ); checkBoxWidth = bmp.bmWidth / 4; checkBoxHeight = bmp.bmHeight / 3; } if (btn_type >= MAX_BTN_TYPE) return -1; /* abort */ /* XP turns a BS_USERBUTTON into BS_PUSHBUTTON */ if (btn_type == BS_USERBUTTON ) { style = (style & ~0x0f) | BS_PUSHBUTTON; WIN_SetStyle( hWnd, style, 0x0f & ~style ); } set_button_state( hWnd, BUTTON_UNCHECKED ); return 0; case WM_ERASEBKGND: if (btn_type == BS_OWNERDRAW) { HDC hdc = (HDC)wParam; RECT rc; HBRUSH hBrush; HWND parent = GetParent(hWnd); if (!parent) parent = hWnd; hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hdc, (LPARAM)hWnd); if (!hBrush) /* did the app forget to call defwindowproc ? */ hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN, (WPARAM)hdc, (LPARAM)hWnd); GetClientRect(hWnd, &rc); FillRect(hdc, &rc, hBrush); } return 1; case WM_PRINTCLIENT: case WM_PAINT: if (btnPaintFunc[btn_type]) { PAINTSTRUCT ps; HDC hdc = wParam ? (HDC)wParam : BeginPaint( hWnd, &ps ); int nOldMode = SetBkMode( hdc, OPAQUE ); (btnPaintFunc[btn_type])( hWnd, hdc, ODA_DRAWENTIRE ); SetBkMode(hdc, nOldMode); /* reset painting mode */ if( !wParam ) EndPaint( hWnd, &ps ); } break; case WM_KEYDOWN: if (wParam == VK_SPACE) { SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 ); set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED ); SetCapture( hWnd ); } break; case WM_LBUTTONDBLCLK: if(style & BS_NOTIFY || btn_type == BS_RADIOBUTTON || btn_type == BS_USERBUTTON || btn_type == BS_OWNERDRAW) { BUTTON_NOTIFY_PARENT(hWnd, BN_DOUBLECLICKED); break; } /* fall through */ case WM_LBUTTONDOWN: SetCapture( hWnd ); SetFocus( hWnd ); set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED ); SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 ); break; case WM_KEYUP: if (wParam != VK_SPACE) break; /* fall through */ case WM_LBUTTONUP: state = get_button_state( hWnd ); if (!(state & BUTTON_BTNPRESSED)) break; state &= BUTTON_NSTATES; set_button_state( hWnd, state ); if (!(state & BUTTON_HIGHLIGHTED)) { ReleaseCapture(); break; } SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 ); ReleaseCapture(); GetClientRect( hWnd, &rect ); if (uMsg == WM_KEYUP || PtInRect( &rect, pt )) { state = get_button_state( hWnd ); switch(btn_type) { case BS_AUTOCHECKBOX: SendMessageW( hWnd, BM_SETCHECK, !(state & BUTTON_CHECKED), 0 ); break; case BS_AUTORADIOBUTTON: SendMessageW( hWnd, BM_SETCHECK, TRUE, 0 ); break; case BS_AUTO3STATE: SendMessageW( hWnd, BM_SETCHECK, (state & BUTTON_3STATE) ? 0 : ((state & 3) + 1), 0 ); break; } BUTTON_NOTIFY_PARENT(hWnd, BN_CLICKED); } break; case WM_CAPTURECHANGED: TRACE("WM_CAPTURECHANGED %p\n", hWnd); state = get_button_state( hWnd ); if (state & BUTTON_BTNPRESSED) { state &= BUTTON_NSTATES; set_button_state( hWnd, state ); if (state & BUTTON_HIGHLIGHTED) SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 ); } break; case WM_MOUSEMOVE: if ((wParam & MK_LBUTTON) && GetCapture() == hWnd) { GetClientRect( hWnd, &rect ); SendMessageW( hWnd, BM_SETSTATE, PtInRect(&rect, pt), 0 ); } break; case WM_SETTEXT: { /* Clear an old text here as Windows does */ HDC hdc = GetDC(hWnd); HBRUSH hbrush; RECT client, rc; HWND parent = GetParent(hWnd); if (!parent) parent = hWnd; hbrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hdc, (LPARAM)hWnd); if (!hbrush) /* did the app forget to call DefWindowProc ? */ hbrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC, (WPARAM)hdc, (LPARAM)hWnd); GetClientRect(hWnd, &client); rc = client; BUTTON_CalcLabelRect(hWnd, hdc, &rc); /* Clip by client rect bounds */ if (rc.right > client.right) rc.right = client.right; if (rc.bottom > client.bottom) rc.bottom = client.bottom; FillRect(hdc, &rc, hbrush); ReleaseDC(hWnd, hdc); if (unicode) DefWindowProcW( hWnd, WM_SETTEXT, wParam, lParam ); else DefWindowProcA( hWnd, WM_SETTEXT, wParam, lParam ); if (btn_type == BS_GROUPBOX) /* Yes, only for BS_GROUPBOX */ InvalidateRect( hWnd, NULL, TRUE ); else paint_button( hWnd, btn_type, ODA_DRAWENTIRE ); return 1; /* success. FIXME: check text length */ } case WM_SETFONT: set_button_font( hWnd, (HFONT)wParam ); if (lParam) InvalidateRect(hWnd, NULL, TRUE); break; case WM_GETFONT: return (LRESULT)get_button_font( hWnd ); case WM_SETFOCUS: TRACE("WM_SETFOCUS %p\n",hWnd); set_button_state( hWnd, get_button_state(hWnd) | BUTTON_HASFOCUS ); paint_button( hWnd, btn_type, ODA_FOCUS ); if (style & BS_NOTIFY) BUTTON_NOTIFY_PARENT(hWnd, BN_SETFOCUS); break; case WM_KILLFOCUS: TRACE("WM_KILLFOCUS %p\n",hWnd); state = get_button_state( hWnd ); set_button_state( hWnd, state & ~BUTTON_HASFOCUS ); paint_button( hWnd, btn_type, ODA_FOCUS ); if ((state & BUTTON_BTNPRESSED) && GetCapture() == hWnd) ReleaseCapture(); if (style & BS_NOTIFY) BUTTON_NOTIFY_PARENT(hWnd, BN_KILLFOCUS); InvalidateRect( hWnd, NULL, FALSE ); break; case WM_SYSCOLORCHANGE: InvalidateRect( hWnd, NULL, FALSE ); break; case BM_SETSTYLE16: case BM_SETSTYLE: if ((wParam & 0x0f) >= MAX_BTN_TYPE) break; btn_type = wParam & 0x0f; style = (style & ~0x0f) | btn_type; WIN_SetStyle( hWnd, style, 0x0f & ~style ); /* Only redraw if lParam flag is set.*/ if (lParam) InvalidateRect( hWnd, NULL, TRUE ); break; case BM_CLICK: SendMessageW( hWnd, WM_LBUTTONDOWN, 0, 0 ); SendMessageW( hWnd, WM_LBUTTONUP, 0, 0 ); break; case BM_SETIMAGE: /* Check that image format matches button style */ switch (style & (BS_BITMAP|BS_ICON)) { case BS_BITMAP: if (wParam != IMAGE_BITMAP) return 0; break; case BS_ICON: if (wParam != IMAGE_ICON) return 0; break; default: return 0; } oldHbitmap = (HBITMAP)SetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET, lParam ); InvalidateRect( hWnd, NULL, FALSE ); return (LRESULT)oldHbitmap; case BM_GETIMAGE: return GetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET ); case BM_GETCHECK16: case BM_GETCHECK: return get_button_state( hWnd ) & 3; case BM_SETCHECK16: case BM_SETCHECK: if (wParam > maxCheckState[btn_type]) wParam = maxCheckState[btn_type]; state = get_button_state( hWnd ); if ((btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON)) { if (wParam) style |= WS_TABSTOP; else style &= ~WS_TABSTOP; SetWindowLongW( hWnd, GWL_STYLE, style ); } if ((state & 3) != wParam) { set_button_state( hWnd, (state & ~3) | wParam ); paint_button( hWnd, btn_type, ODA_SELECT ); } if ((btn_type == BS_AUTORADIOBUTTON) && (wParam == BUTTON_CHECKED) && (style & WS_CHILD)) BUTTON_CheckAutoRadioButton( hWnd ); break; case BM_GETSTATE16: case BM_GETSTATE: return get_button_state( hWnd ); case BM_SETSTATE16: case BM_SETSTATE: state = get_button_state( hWnd ); if (wParam) { if (state & BUTTON_HIGHLIGHTED) break; set_button_state( hWnd, state | BUTTON_HIGHLIGHTED ); } else { if (!(state & BUTTON_HIGHLIGHTED)) break; set_button_state( hWnd, state & ~BUTTON_HIGHLIGHTED ); } paint_button( hWnd, btn_type, ODA_SELECT ); break; case WM_NCHITTEST: if(btn_type == BS_GROUPBOX) return HTTRANSPARENT; /* fall through */ default: return unicode ? DefWindowProcW(hWnd, uMsg, wParam, lParam) : DefWindowProcA(hWnd, uMsg, wParam, lParam); } return 0; } /*********************************************************************** * ButtonWndProcW * The button window procedure. This is just a wrapper which locks * the passed HWND and calls the real window procedure (with a WND* * pointer pointing to the locked windowstructure). */ static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) { if (!IsWindow( hWnd )) return 0; return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, TRUE ); } /*********************************************************************** * ButtonWndProcA */ static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) { if (!IsWindow( hWnd )) return 0; return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, FALSE ); } /********************************************************************** * Convert button styles to flags used by DrawText. */ static UINT BUTTON_BStoDT( DWORD style, DWORD ex_style ) { UINT dtStyle = DT_NOCLIP; /* We use SelectClipRgn to limit output */ /* "Convert" pushlike buttons to pushbuttons */ if (style & BS_PUSHLIKE) style &= ~0x0F; if (!(style & BS_MULTILINE)) dtStyle |= DT_SINGLELINE; else dtStyle |= DT_WORDBREAK; switch (style & BS_CENTER) { case BS_LEFT: /* DT_LEFT is 0 */ break; case BS_RIGHT: dtStyle |= DT_RIGHT; break; case BS_CENTER: dtStyle |= DT_CENTER; break; default: /* Pushbutton's text is centered by default */ if (get_button_type(style) <= BS_DEFPUSHBUTTON) dtStyle |= DT_CENTER; /* all other flavours have left aligned text */ } if (ex_style & WS_EX_RIGHT) dtStyle = DT_RIGHT | (dtStyle & ~(DT_LEFT | DT_CENTER)); /* DrawText ignores vertical alignment for multiline text, * but we use these flags to align label manually. */ if (get_button_type(style) != BS_GROUPBOX) { switch (style & BS_VCENTER) { case BS_TOP: /* DT_TOP is 0 */ break; case BS_BOTTOM: dtStyle |= DT_BOTTOM; break; case BS_VCENTER: /* fall through */ default: dtStyle |= DT_VCENTER; break; } } else /* GroupBox's text is always single line and is top aligned. */ dtStyle |= DT_SINGLELINE; return dtStyle; } /********************************************************************** * BUTTON_CalcLabelRect * * Calculates label's rectangle depending on button style. * * Returns flags to be passed to DrawText. * Calculated rectangle doesn't take into account button state * (pushed, etc.). If there is nothing to draw (no text/image) output * rectangle is empty, and return value is (UINT)-1. */ static UINT BUTTON_CalcLabelRect(HWND hwnd, HDC hdc, RECT *rc) { LONG style = GetWindowLongW( hwnd, GWL_STYLE ); LONG ex_style = GetWindowLongW( hwnd, GWL_EXSTYLE ); WCHAR *text; ICONINFO iconInfo; BITMAP bm; UINT dtStyle = BUTTON_BStoDT( style, ex_style ); RECT r = *rc; INT n; /* Calculate label rectangle according to label type */ switch (style & (BS_ICON|BS_BITMAP)) { case BS_TEXT: if (!(text = get_button_text( hwnd ))) goto empty_rect; if (!text[0]) { HeapFree( GetProcessHeap(), 0, text ); goto empty_rect; } DrawTextW(hdc, text, -1, &r, dtStyle | DT_CALCRECT); HeapFree( GetProcessHeap(), 0, text ); break; case BS_ICON: if (!GetIconInfo((HICON)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), &iconInfo)) goto empty_rect; GetObjectW (iconInfo.hbmColor, sizeof(BITMAP), &bm); r.right = r.left + bm.bmWidth; r.bottom = r.top + bm.bmHeight; DeleteObject(iconInfo.hbmColor); DeleteObject(iconInfo.hbmMask); break; case BS_BITMAP: if (!GetObjectW( (HANDLE)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), sizeof(BITMAP), &bm)) goto empty_rect; r.right = r.left + bm.bmWidth; r.bottom = r.top + bm.bmHeight; break; default: empty_rect: rc->right = r.left; rc->bottom = r.top; return (UINT)-1; } /* Position label inside bounding rectangle according to * alignment flags. (calculated rect is always left-top aligned). * If label is aligned to any side - shift label in opposite * direction to leave extra space for focus rectangle. */ switch (dtStyle & (DT_CENTER|DT_RIGHT)) { case DT_LEFT: r.left++; r.right++; break; case DT_CENTER: n = r.right - r.left; r.left = rc->left + ((rc->right - rc->left) - n) / 2; r.right = r.left + n; break; case DT_RIGHT: n = r.right - r.left; r.right = rc->right - 1; r.left = r.right - n; break; } switch (dtStyle & (DT_VCENTER|DT_BOTTOM)) { case DT_TOP: r.top++; r.bottom++; break; case DT_VCENTER: n = r.bottom - r.top; r.top = rc->top + ((rc->bottom - rc->top) - n) / 2; r.bottom = r.top + n; break; case DT_BOTTOM: n = r.bottom - r.top; r.bottom = rc->bottom - 1; r.top = r.bottom - n; break; } *rc = r; return dtStyle; } /********************************************************************** * BUTTON_DrawTextCallback * * Callback function used by DrawStateW function. */ static BOOL CALLBACK BUTTON_DrawTextCallback(HDC hdc, LPARAM lp, WPARAM wp, int cx, int cy) { RECT rc; rc.left = 0; rc.top = 0; rc.right = cx; rc.bottom = cy; DrawTextW(hdc, (LPCWSTR)lp, -1, &rc, (UINT)wp); return TRUE; } /********************************************************************** * BUTTON_DrawLabel * * Common function for drawing button label. */ static void BUTTON_DrawLabel(HWND hwnd, HDC hdc, UINT dtFlags, const RECT *rc) { DRAWSTATEPROC lpOutputProc = NULL; LPARAM lp; WPARAM wp = 0; HBRUSH hbr = 0; UINT flags = IsWindowEnabled(hwnd) ? DSS_NORMAL : DSS_DISABLED; LONG state = get_button_state( hwnd ); LONG style = GetWindowLongW( hwnd, GWL_STYLE ); WCHAR *text = NULL; /* FIXME: To draw disabled label in Win31 look-and-feel, we probably * must use DSS_MONO flag and COLOR_GRAYTEXT brush (or maybe DSS_UNION). * I don't have Win31 on hand to verify that, so I leave it as is. */ if ((style & BS_PUSHLIKE) && (state & BUTTON_3STATE)) { hbr = GetSysColorBrush(COLOR_GRAYTEXT); flags |= DSS_MONO; } switch (style & (BS_ICON|BS_BITMAP)) { case BS_TEXT: /* DST_COMPLEX -- is 0 */ lpOutputProc = BUTTON_DrawTextCallback; if (!(text = get_button_text( hwnd ))) return; lp = (LPARAM)text; wp = (WPARAM)dtFlags; break; case BS_ICON: flags |= DST_ICON; lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ); break; case BS_BITMAP: flags |= DST_BITMAP; lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ); break; default: return; } DrawStateW(hdc, hbr, lpOutputProc, lp, wp, rc->left, rc->top, rc->right - rc->left, rc->bottom - rc->top, flags); HeapFree( GetProcessHeap(), 0, text ); } /********************************************************************** * Push Button Functions */ static void PB_Paint( HWND hwnd, HDC hDC, UINT action ) { RECT rc, focus_rect, r; UINT dtFlags, uState; HPEN hOldPen; HBRUSH hOldBrush; INT oldBkMode; COLORREF oldTxtColor; HFONT hFont; LONG state = get_button_state( hwnd ); LONG style = GetWindowLongW( hwnd, GWL_STYLE ); BOOL pushedState = (state & BUTTON_HIGHLIGHTED); HWND parent; GetClientRect( hwnd, &rc ); /* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */ if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont ); parent = GetParent(hwnd); if (!parent) parent = hwnd; SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd ); setup_clipping( hwnd, hDC ); hOldPen = SelectObject(hDC, SYSCOLOR_GetPen(COLOR_WINDOWFRAME)); hOldBrush = SelectObject(hDC,GetSysColorBrush(COLOR_BTNFACE)); oldBkMode = SetBkMode(hDC, TRANSPARENT); if (get_button_type(style) == BS_DEFPUSHBUTTON) { if (action != ODA_FOCUS) Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom); InflateRect( &rc, -1, -1 ); } focus_rect = rc; /* completely skip the drawing if only focus has changed */ if (action == ODA_FOCUS) goto draw_focus; uState = DFCS_BUTTONPUSH | DFCS_ADJUSTRECT; if (style & BS_FLAT) uState |= DFCS_MONO; else if (pushedState) { if (get_button_type(style) == BS_DEFPUSHBUTTON ) uState |= DFCS_FLAT; else uState |= DFCS_PUSHED; } if (state & (BUTTON_CHECKED | BUTTON_3STATE)) uState |= DFCS_CHECKED; DrawFrameControl( hDC, &rc, DFC_BUTTON, uState ); /* draw button label */ r = rc; dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &r); if (dtFlags == (UINT)-1L) goto cleanup; if (pushedState) OffsetRect(&r, 1, 1); IntersectClipRect(hDC, rc.left, rc.top, rc.right, rc.bottom); oldTxtColor = SetTextColor( hDC, GetSysColor(COLOR_BTNTEXT) ); BUTTON_DrawLabel(hwnd, hDC, dtFlags, &r); SetTextColor( hDC, oldTxtColor ); draw_focus: if ((action == ODA_FOCUS) || ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS))) { InflateRect( &focus_rect, -1, -1 ); IntersectRect(&focus_rect, &focus_rect, &rc); DrawFocusRect( hDC, &focus_rect ); } cleanup: SelectObject( hDC, hOldPen ); SelectObject( hDC, hOldBrush ); SetBkMode(hDC, oldBkMode); } /********************************************************************** * Check Box & Radio Button Functions */ static void CB_Paint( HWND hwnd, HDC hDC, UINT action ) { RECT rbox, rtext, client; HBRUSH hBrush; int delta; UINT dtFlags; HFONT hFont; LONG state = get_button_state( hwnd ); LONG style = GetWindowLongW( hwnd, GWL_STYLE ); HWND parent; if (style & BS_PUSHLIKE) { PB_Paint( hwnd, hDC, action ); return; } GetClientRect(hwnd, &client); rbox = rtext = client; if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont ); parent = GetParent(hwnd); if (!parent) parent = hwnd; hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd); if (!hBrush) /* did the app forget to call defwindowproc ? */ hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd ); setup_clipping( hwnd, hDC ); if (style & BS_LEFTTEXT) { /* magic +4 is what CTL3D expects */ rtext.right -= checkBoxWidth + 4; rbox.left = rbox.right - checkBoxWidth; } else { rtext.left += checkBoxWidth + 4; rbox.right = checkBoxWidth; } /* Since WM_ERASEBKGND does nothing, first prepare background */ if (action == ODA_SELECT) FillRect( hDC, &rbox, hBrush ); if (action == ODA_DRAWENTIRE) FillRect( hDC, &client, hBrush ); /* Draw label */ client = rtext; dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rtext); /* Only adjust rbox when rtext is valid */ if (dtFlags != (UINT)-1L) { rbox.top = rtext.top; rbox.bottom = rtext.bottom; } /* Draw the check-box bitmap */ if (action == ODA_DRAWENTIRE || action == ODA_SELECT) { UINT flags; if ((get_button_type(style) == BS_RADIOBUTTON) || (get_button_type(style) == BS_AUTORADIOBUTTON)) flags = DFCS_BUTTONRADIO; else if (state & BUTTON_3STATE) flags = DFCS_BUTTON3STATE; else flags = DFCS_BUTTONCHECK; if (state & (BUTTON_CHECKED | BUTTON_3STATE)) flags |= DFCS_CHECKED; if (state & BUTTON_HIGHLIGHTED) flags |= DFCS_PUSHED; if (style & WS_DISABLED) flags |= DFCS_INACTIVE; /* rbox must have the correct height */ delta = rbox.bottom - rbox.top - checkBoxHeight; if (style & BS_TOP) { if (delta > 0) { rbox.bottom = rbox.top + checkBoxHeight; } else { rbox.top -= -delta/2 + 1; rbox.bottom = rbox.top + checkBoxHeight; } } else if (style & BS_BOTTOM) { if (delta > 0) { rbox.top = rbox.bottom - checkBoxHeight; } else { rbox.bottom += -delta/2 + 1; rbox.top = rbox.bottom - checkBoxHeight; } } else { /* Default */ if (delta > 0) { int ofs = (delta / 2); rbox.bottom -= ofs + 1; rbox.top = rbox.bottom - checkBoxHeight; } else if (delta < 0) { int ofs = (-delta / 2); rbox.top -= ofs + 1; rbox.bottom = rbox.top + checkBoxHeight; } } DrawFrameControl( hDC, &rbox, DFC_BUTTON, flags ); } if (dtFlags == (UINT)-1L) /* Noting to draw */ return; if (action == ODA_DRAWENTIRE) BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rtext); /* ... and focus */ if ((action == ODA_FOCUS) || ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS))) { rtext.left--; rtext.right++; IntersectRect(&rtext, &rtext, &client); DrawFocusRect( hDC, &rtext ); } } /********************************************************************** * BUTTON_CheckAutoRadioButton * * hwnd is checked, uncheck every other auto radio button in group */ static void BUTTON_CheckAutoRadioButton( HWND hwnd ) { HWND parent, sibling, start; parent = GetParent(hwnd); /* make sure that starting control is not disabled or invisible */ start = sibling = GetNextDlgGroupItem( parent, hwnd, TRUE ); do { if (!sibling) break; if ((hwnd != sibling) && ((GetWindowLongW( sibling, GWL_STYLE) & 0x0f) == BS_AUTORADIOBUTTON)) SendMessageW( sibling, BM_SETCHECK, BUTTON_UNCHECKED, 0 ); sibling = GetNextDlgGroupItem( parent, sibling, FALSE ); } while (sibling != start); } /********************************************************************** * Group Box Functions */ static void GB_Paint( HWND hwnd, HDC hDC, UINT action ) { RECT rc, rcFrame; HBRUSH hbr; HFONT hFont; UINT dtFlags; TEXTMETRICW tm; LONG style = GetWindowLongW( hwnd, GWL_STYLE ); HWND parent; if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont ); /* GroupBox acts like static control, so it sends CTLCOLORSTATIC */ parent = GetParent(hwnd); if (!parent) parent = hwnd; hbr = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd); if (!hbr) /* did the app forget to call defwindowproc ? */ hbr = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd); setup_clipping( hwnd, hDC ); GetClientRect( hwnd, &rc); rcFrame = rc; GetTextMetricsW (hDC, &tm); rcFrame.top += (tm.tmHeight / 2) - 1; DrawEdge (hDC, &rcFrame, EDGE_ETCHED, BF_RECT | ((style & BS_FLAT) ? BF_FLAT : 0)); InflateRect(&rc, -7, 1); dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rc); if (dtFlags == (UINT)-1L) return; /* Because buttons have CS_PARENTDC class style, there is a chance * that label will be drawn out of client rect. * But Windows doesn't clip label's rect, so do I. */ /* There is 1-pixel margin at the left, right, and bottom */ rc.left--; rc.right++; rc.bottom++; FillRect(hDC, &rc, hbr); rc.left++; rc.right--; rc.bottom--; BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rc); } /********************************************************************** * User Button Functions */ static void UB_Paint( HWND hwnd, HDC hDC, UINT action ) { RECT rc; HBRUSH hBrush; HFONT hFont; LONG state = get_button_state( hwnd ); HWND parent; if (action == ODA_SELECT) return; GetClientRect( hwnd, &rc); if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont ); parent = GetParent(hwnd); if (!parent) parent = hwnd; hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd); if (!hBrush) /* did the app forget to call defwindowproc ? */ hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd); FillRect( hDC, &rc, hBrush ); if ((action == ODA_FOCUS) || ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS))) DrawFocusRect( hDC, &rc ); BUTTON_NOTIFY_PARENT( hwnd, BN_PAINT ); } /********************************************************************** * Ownerdrawn Button Functions */ static void OB_Paint( HWND hwnd, HDC hDC, UINT action ) { LONG state = get_button_state( hwnd ); DRAWITEMSTRUCT dis; LONG_PTR id = GetWindowLongPtrW( hwnd, GWLP_ID ); HWND parent; HFONT hFont, hPrevFont = 0; dis.CtlType = ODT_BUTTON; dis.CtlID = id; dis.itemID = 0; dis.itemAction = action; dis.itemState = ((state & BUTTON_HASFOCUS) ? ODS_FOCUS : 0) | ((state & BUTTON_HIGHLIGHTED) ? ODS_SELECTED : 0) | (IsWindowEnabled(hwnd) ? 0: ODS_DISABLED); dis.hwndItem = hwnd; dis.hDC = hDC; dis.itemData = 0; GetClientRect( hwnd, &dis.rcItem ); if ((hFont = get_button_font( hwnd ))) hPrevFont = SelectObject( hDC, hFont ); parent = GetParent(hwnd); if (!parent) parent = hwnd; SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd ); setup_clipping( hwnd, hDC ); SendMessageW( GetParent(hwnd), WM_DRAWITEM, id, (LPARAM)&dis ); if (hPrevFont) SelectObject(hDC, hPrevFont); }