| /* |
| * 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 "vssym32.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, 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, 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; |
| } |
