| /* | |
| * 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) & WS_DISABLED) 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; | |
| } |