/* * Theming - Combo box control * * Copyright (c) 2005 by Frank Richter * * 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 * */ #include <stdarg.h> #include <string.h> #include <stdlib.h> #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "winuser.h" #include "uxtheme.h" #include "tmschema.h" #include "comctl32.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(themingcombo); /* Subclass-private state flags */ #define STATE_NOREDRAW 1 #define STATE_HOT 2 /* some constants for metrics, same as in user32 */ #define COMBO_XBORDERSIZE 2 #define COMBO_YBORDERSIZE 2 #define COMBO_EDITBUTTONSPACE 0 #define EDIT_CONTROL_PADDING 1 /* paint text of combobox, needed for read-only drop downs. */ static void paint_text (HWND hwnd, HDC hdc, DWORD dwStyle, const COMBOBOXINFO *cbi) { INT id, size = 0; LPWSTR pText = NULL; UINT itemState = ODS_COMBOBOXEDIT; HFONT font = (HFONT)SendMessageW (hwnd, WM_GETFONT, 0, 0); HFONT hPrevFont = (font) ? SelectObject(hdc, font) : 0; RECT rectEdit; BOOL focused = GetFocus () == hwnd; BOOL dropped = cbi->stateButton == STATE_SYSTEM_PRESSED; TRACE("\n"); /* follow Windows combobox that sends a bunch of text * inquiries to its listbox while processing WM_PAINT. */ if( (id = SendMessageW (cbi->hwndList, LB_GETCURSEL, 0, 0) ) != LB_ERR ) { size = SendMessageW (cbi->hwndList, LB_GETTEXTLEN, id, 0); if (size == LB_ERR) FIXME("LB_ERR probably not handled yet\n"); if( (pText = HeapAlloc( GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))) ) { /* size from LB_GETTEXTLEN may be too large, from LB_GETTEXT is accurate */ size=SendMessageW (cbi->hwndList, LB_GETTEXT, (WPARAM)id, (LPARAM)pText); pText[size] = '\0'; /* just in case */ } else return; } else if( !(dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) ) return; /* * Give ourselves some space. */ CopyRect (&rectEdit, &cbi->rcItem); InflateRect( &rectEdit, -1, -1 ); if(dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) { DRAWITEMSTRUCT dis; HRGN clipRegion; UINT ctlid = (UINT)GetWindowLongPtrW( hwnd, GWLP_ID ); /* setup state for DRAWITEM message. Owner will highlight */ if ( focused && !dropped ) itemState |= ODS_SELECTED | ODS_FOCUS; /* * Save the current clip region. * To retrieve the clip region, we need to create one "dummy" * clip region. */ clipRegion = CreateRectRgnIndirect(&rectEdit); if (GetClipRgn(hdc, clipRegion)!=1) { DeleteObject(clipRegion); clipRegion=NULL; } if (!IsWindowEnabled(hwnd)) itemState |= ODS_DISABLED; dis.CtlType = ODT_COMBOBOX; dis.CtlID = ctlid; dis.hwndItem = hwnd; dis.itemAction = ODA_DRAWENTIRE; dis.itemID = id; dis.itemState = itemState; dis.hDC = hdc; dis.rcItem = rectEdit; dis.itemData = SendMessageW(cbi->hwndList, LB_GETITEMDATA, (WPARAM)id, 0 ); /* * Clip the DC and have the parent draw the item. */ IntersectClipRect(hdc, rectEdit.left, rectEdit.top, rectEdit.right, rectEdit.bottom); SendMessageW(GetParent (hwnd), WM_DRAWITEM, ctlid, (LPARAM)&dis ); /* * Reset the clipping region. */ SelectClipRgn(hdc, clipRegion); } else { static const WCHAR empty_stringW[] = { 0 }; if ( focused && !dropped ) { /* highlight */ FillRect( hdc, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) ); SetBkColor( hdc, GetSysColor( COLOR_HIGHLIGHT ) ); SetTextColor( hdc, GetSysColor( COLOR_HIGHLIGHTTEXT ) ); } ExtTextOutW( hdc, rectEdit.left + 1, rectEdit.top + 1, ETO_OPAQUE | ETO_CLIPPED, &rectEdit, pText ? pText : empty_stringW , size, NULL ); if ( focused && !dropped ) DrawFocusRect( hdc, &rectEdit ); } if( hPrevFont ) SelectObject(hdc, hPrevFont ); HeapFree( GetProcessHeap(), 0, pText ); } /* paint the combobox */ static LRESULT paint (HTHEME theme, HWND hwnd, HDC hParamDC, ULONG state) { PAINTSTRUCT ps; HDC hDC; COMBOBOXINFO cbi; DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE); hDC = (hParamDC) ? hParamDC : BeginPaint( hwnd, &ps); TRACE("hdc=%p\n", hDC); if( hDC && !(state & STATE_NOREDRAW) ) { RECT frameRect; int buttonState; cbi.cbSize = sizeof (cbi); SendMessageW (hwnd, CB_GETCOMBOBOXINFO, 0, (LPARAM)&cbi); /* paint border */ if ((dwStyle & CBS_DROPDOWNLIST) != CBS_SIMPLE) GetClientRect (hwnd, &frameRect); else { CopyRect (&frameRect, &cbi.rcItem); InflateRect(&frameRect, EDIT_CONTROL_PADDING + COMBO_XBORDERSIZE, EDIT_CONTROL_PADDING + COMBO_YBORDERSIZE); } DrawThemeBackground (theme, hDC, 0, IsWindowEnabled (hwnd) ? CBXS_NORMAL : CBXS_DISABLED, &frameRect, NULL); /* paint button */ if (cbi.stateButton != STATE_SYSTEM_INVISIBLE) { if (!IsWindowEnabled (hwnd)) buttonState = CBXS_DISABLED; else if (cbi.stateButton == STATE_SYSTEM_PRESSED) buttonState = CBXS_PRESSED; else if (state & STATE_HOT) buttonState = CBXS_HOT; else buttonState = CBXS_NORMAL; DrawThemeBackground (theme, hDC, CP_DROPDOWNBUTTON, buttonState, &cbi.rcButton, NULL); } /* paint text, if we need to */ if ((dwStyle & CBS_DROPDOWNLIST) == CBS_DROPDOWNLIST) paint_text (hwnd, hDC, dwStyle, &cbi); } if( !hParamDC ) EndPaint(hwnd, &ps); return 0; } /********************************************************************** * The combo control subclass window proc. */ LRESULT CALLBACK THEMING_ComboSubclassProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, ULONG_PTR dwRefData) { const WCHAR* themeClass = WC_COMBOBOXW; HTHEME theme; LRESULT result; switch (msg) { case WM_CREATE: result = THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); OpenThemeData( hwnd, themeClass ); return result; case WM_DESTROY: theme = GetWindowTheme( hwnd ); CloseThemeData ( theme ); return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); case WM_THEMECHANGED: theme = GetWindowTheme( hwnd ); CloseThemeData ( theme ); OpenThemeData( hwnd, themeClass ); break; case WM_SYSCOLORCHANGE: theme = GetWindowTheme( hwnd ); if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); /* Do nothing. When themed, a WM_THEMECHANGED will be received, too, * which will do the repaint. */ break; case WM_PAINT: theme = GetWindowTheme( hwnd ); if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); return paint (theme, hwnd, (HDC)wParam, dwRefData); case WM_SETREDRAW: /* Since there doesn't seem to be WM_GETREDRAW, do redraw tracking in * the subclass as well. */ if( wParam ) dwRefData &= ~STATE_NOREDRAW; else dwRefData |= STATE_NOREDRAW; THEMING_SetSubclassData (hwnd, dwRefData); return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); case WM_MOUSEMOVE: { /* Dropdown button hot-tracking */ COMBOBOXINFO cbi; POINT pt; pt.x = (short)LOWORD(lParam); pt.y = (short)HIWORD(lParam); cbi.cbSize = sizeof (cbi); SendMessageW (hwnd, CB_GETCOMBOBOXINFO, 0, (LPARAM)&cbi); if (cbi.stateButton != STATE_SYSTEM_INVISIBLE) { if (PtInRect (&cbi.rcButton, pt)) { if (!(dwRefData & STATE_HOT)) { dwRefData |= STATE_HOT; THEMING_SetSubclassData (hwnd, dwRefData); RedrawWindow (hwnd, &cbi.rcButton, 0, RDW_INVALIDATE | RDW_UPDATENOW); } } else { if (dwRefData & STATE_HOT) { dwRefData &= ~STATE_HOT; THEMING_SetSubclassData (hwnd, dwRefData); RedrawWindow (hwnd, &cbi.rcButton, 0, RDW_INVALIDATE | RDW_UPDATENOW); } } } } return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); default: /* Call old proc */ return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam); } return 0; }