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Sweden-Number/dlls/comctl32/button.c

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/*
* Copyright (C) 1993 Johannes Ruscheinski
* Copyright (C) 1993 David Metcalfe
* Copyright (C) 1994 Alexandre Julliard
* Copyright (C) 2008 by Reece H. Dunn
*
* 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
*
* TODO
* Styles
* - BS_NOTIFY: is it complete?
* - BS_RIGHTBUTTON: same as BS_LEFTTEXT
*
* 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
*
* 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
* - NMBCHOTITEM
*/
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#define OEMRESOURCE
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "uxtheme.h"
#include "vssym32.h"
#include "wine/debug.h"
#include "wine/heap.h"
#include "comctl32.h"
WINE_DEFAULT_DEBUG_CHANNEL(button);
/* undocumented flags */
#define BUTTON_NSTATES 0x0F
#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)
typedef struct _BUTTON_INFO
{
HWND hwnd;
HWND parent;
LONG style;
LONG state;
HFONT font;
WCHAR *note;
INT note_length;
DWORD image_type; /* IMAGE_BITMAP or IMAGE_ICON */
BUTTON_IMAGELIST imagelist;
RECT text_margin;
union
{
HICON icon;
HBITMAP bitmap;
HANDLE image;
} u;
} BUTTON_INFO;
static UINT BUTTON_CalcLayoutRects( const BUTTON_INFO *infoPtr, HDC hdc, RECT *labelRc, RECT *imageRc, RECT *textRc );
static void PB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action );
static void CB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action );
static void GB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action );
static void UB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action );
static void OB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action );
static void BUTTON_CheckAutoRadioButton( HWND hwnd );
#define MAX_BTN_TYPE 16
static const WORD maxCheckState[MAX_BTN_TYPE] =
{
BST_UNCHECKED, /* BS_PUSHBUTTON */
BST_UNCHECKED, /* BS_DEFPUSHBUTTON */
BST_CHECKED, /* BS_CHECKBOX */
BST_CHECKED, /* BS_AUTOCHECKBOX */
BST_CHECKED, /* BS_RADIOBUTTON */
BST_INDETERMINATE, /* BS_3STATE */
BST_INDETERMINATE, /* BS_AUTO3STATE */
BST_UNCHECKED, /* BS_GROUPBOX */
BST_UNCHECKED, /* BS_USERBUTTON */
BST_CHECKED, /* BS_AUTORADIOBUTTON */
BST_UNCHECKED, /* BS_PUSHBOX */
BST_UNCHECKED, /* BS_OWNERDRAW */
BST_UNCHECKED, /* BS_SPLITBUTTON */
BST_UNCHECKED, /* BS_DEFSPLITBUTTON */
BST_UNCHECKED, /* BS_COMMANDLINK */
BST_UNCHECKED /* BS_DEFCOMMANDLINK */
};
/* Generic draw states, use get_draw_state() to get specific state for button type */
enum draw_state
{
STATE_NORMAL,
STATE_DISABLED,
STATE_HOT,
STATE_PRESSED,
STATE_DEFAULTED,
DRAW_STATE_COUNT
};
typedef void (*pfPaint)( const BUTTON_INFO *infoPtr, 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, /* BS_PUSHBOX */
OB_Paint, /* BS_OWNERDRAW */
PB_Paint, /* BS_SPLITBUTTON */
PB_Paint, /* BS_DEFSPLITBUTTON */
PB_Paint, /* BS_COMMANDLINK */
PB_Paint /* BS_DEFCOMMANDLINK */
};
typedef void (*pfThemedPaint)( HTHEME theme, const BUTTON_INFO *infoPtr, HDC hdc, int drawState, UINT dtflags, BOOL focused);
static void PB_ThemedPaint( HTHEME theme, const BUTTON_INFO *infoPtr, HDC hdc, int drawState, UINT dtflags, BOOL focused);
static void CB_ThemedPaint( HTHEME theme, const BUTTON_INFO *infoPtr, HDC hdc, int drawState, UINT dtflags, BOOL focused);
static void GB_ThemedPaint( HTHEME theme, const BUTTON_INFO *infoPtr, HDC hdc, int drawState, UINT dtflags, BOOL focused);
static const pfThemedPaint btnThemedPaintFunc[MAX_BTN_TYPE] =
{
PB_ThemedPaint, /* BS_PUSHBUTTON */
PB_ThemedPaint, /* BS_DEFPUSHBUTTON */
CB_ThemedPaint, /* BS_CHECKBOX */
CB_ThemedPaint, /* BS_AUTOCHECKBOX */
CB_ThemedPaint, /* BS_RADIOBUTTON */
CB_ThemedPaint, /* BS_3STATE */
CB_ThemedPaint, /* BS_AUTO3STATE */
GB_ThemedPaint, /* BS_GROUPBOX */
NULL, /* BS_USERBUTTON */
CB_ThemedPaint, /* BS_AUTORADIOBUTTON */
NULL, /* BS_PUSHBOX */
NULL, /* BS_OWNERDRAW */
NULL, /* BS_SPLITBUTTON */
NULL, /* BS_DEFSPLITBUTTON */
NULL, /* BS_COMMANDLINK */
NULL, /* BS_DEFCOMMANDLINK */
};
typedef BOOL (*pfGetIdealSize)(BUTTON_INFO *infoPtr, SIZE *size);
static BOOL PB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size);
static BOOL CB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size);
static BOOL GB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size);
static const pfGetIdealSize btnGetIdealSizeFunc[MAX_BTN_TYPE] = {
PB_GetIdealSize, /* BS_PUSHBUTTON */
PB_GetIdealSize, /* BS_DEFPUSHBUTTON */
CB_GetIdealSize, /* BS_CHECKBOX */
CB_GetIdealSize, /* BS_AUTOCHECKBOX */
CB_GetIdealSize, /* BS_RADIOBUTTON */
GB_GetIdealSize, /* BS_3STATE */
GB_GetIdealSize, /* BS_AUTO3STATE */
GB_GetIdealSize, /* BS_GROUPBOX */
PB_GetIdealSize, /* BS_USERBUTTON */
CB_GetIdealSize, /* BS_AUTORADIOBUTTON */
GB_GetIdealSize, /* BS_PUSHBOX */
GB_GetIdealSize, /* BS_OWNERDRAW */
/* GetIdealSize() for following types are unimplemented, use BS_PUSHBUTTON's for now */
PB_GetIdealSize, /* BS_SPLITBUTTON */
PB_GetIdealSize, /* BS_DEFSPLITBUTTON */
PB_GetIdealSize, /* BS_COMMANDLINK */
PB_GetIdealSize /* BS_DEFCOMMANDLINK */
};
static inline UINT get_button_type( LONG window_style )
{
return (window_style & BS_TYPEMASK);
}
/* paint a button of any type */
static inline void paint_button( BUTTON_INFO *infoPtr, LONG style, UINT action )
{
if (btnPaintFunc[style] && IsWindowVisible(infoPtr->hwnd))
{
HDC hdc = GetDC( infoPtr->hwnd );
btnPaintFunc[style]( infoPtr, hdc, action );
ReleaseDC( infoPtr->hwnd, hdc );
}
}
/* retrieve the button text; returned buffer must be freed by caller */
static inline WCHAR *get_button_text( const BUTTON_INFO *infoPtr )
{
INT len = GetWindowTextLengthW( infoPtr->hwnd );
WCHAR *buffer = heap_alloc( (len + 1) * sizeof(WCHAR) );
if (buffer)
GetWindowTextW( infoPtr->hwnd, buffer, len + 1 );
return buffer;
}
HRGN set_control_clipping( HDC hdc, const RECT *rect )
{
RECT rc = *rect;
HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
if (GetClipRgn( hdc, hrgn ) != 1)
{
DeleteObject( hrgn );
hrgn = 0;
}
DPtoLP( hdc, (POINT *)&rc, 2 );
if (GetLayout( hdc ) & LAYOUT_RTL) /* compensate for the shifting done by IntersectClipRect */
{
rc.left++;
rc.right++;
}
IntersectClipRect( hdc, rc.left, rc.top, rc.right, rc.bottom );
return hrgn;
}
static WCHAR *heap_strndupW(const WCHAR *src, size_t length)
{
size_t size = (length + 1) * sizeof(WCHAR);
WCHAR *dst = heap_alloc(size);
if (dst) memcpy(dst, src, size);
return dst;
}
/**********************************************************************
* 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 &= ~BS_TYPEMASK;
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;
}
}
return dtStyle;
}
static int get_draw_state(const BUTTON_INFO *infoPtr)
{
static const int pb_states[DRAW_STATE_COUNT] = { PBS_NORMAL, PBS_DISABLED, PBS_HOT, PBS_PRESSED, PBS_DEFAULTED };
static const int cb_states[3][DRAW_STATE_COUNT] =
{
{ CBS_UNCHECKEDNORMAL, CBS_UNCHECKEDDISABLED, CBS_UNCHECKEDHOT, CBS_UNCHECKEDPRESSED, CBS_UNCHECKEDNORMAL },
{ CBS_CHECKEDNORMAL, CBS_CHECKEDDISABLED, CBS_CHECKEDHOT, CBS_CHECKEDPRESSED, CBS_CHECKEDNORMAL },
{ CBS_MIXEDNORMAL, CBS_MIXEDDISABLED, CBS_MIXEDHOT, CBS_MIXEDPRESSED, CBS_MIXEDNORMAL }
};
static const int rb_states[2][DRAW_STATE_COUNT] =
{
{ RBS_UNCHECKEDNORMAL, RBS_UNCHECKEDDISABLED, RBS_UNCHECKEDHOT, RBS_UNCHECKEDPRESSED, RBS_UNCHECKEDNORMAL },
{ RBS_CHECKEDNORMAL, RBS_CHECKEDDISABLED, RBS_CHECKEDHOT, RBS_CHECKEDPRESSED, RBS_CHECKEDNORMAL }
};
static const int gb_states[DRAW_STATE_COUNT] = { GBS_NORMAL, GBS_DISABLED, GBS_NORMAL, GBS_NORMAL, GBS_NORMAL };
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
UINT type = get_button_type(style);
int check_state = infoPtr->state & 3;
enum draw_state state;
if (!IsWindowEnabled(infoPtr->hwnd))
state = STATE_DISABLED;
else if (infoPtr->state & BST_PUSHED)
state = STATE_PRESSED;
else if (infoPtr->state & BST_HOT)
state = STATE_HOT;
else if (infoPtr->state & BST_FOCUS)
state = STATE_DEFAULTED;
else
state = STATE_NORMAL;
switch (type)
{
case BS_PUSHBUTTON:
case BS_DEFPUSHBUTTON:
case BS_USERBUTTON:
case BS_SPLITBUTTON:
case BS_DEFSPLITBUTTON:
case BS_COMMANDLINK:
case BS_DEFCOMMANDLINK:
return pb_states[state];
case BS_CHECKBOX:
case BS_AUTOCHECKBOX:
return cb_states[check_state][state];
case BS_RADIOBUTTON:
case BS_3STATE:
case BS_AUTO3STATE:
case BS_AUTORADIOBUTTON:
return rb_states[check_state][state];
case BS_GROUPBOX:
return gb_states[state];
default:
WARN("Unsupported button type 0x%08x\n", type);
return PBS_NORMAL;
}
}
static LRESULT CALLBACK BUTTON_WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
BUTTON_INFO *infoPtr = (BUTTON_INFO *)GetWindowLongPtrW(hWnd, 0);
RECT rect;
POINT pt;
LONG style = GetWindowLongW( hWnd, GWL_STYLE );
UINT btn_type = get_button_type( style );
LONG state, new_state;
HANDLE oldHbitmap;
HTHEME theme;
if (!IsWindow( hWnd )) return 0;
if (!infoPtr && (uMsg != WM_NCCREATE))
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
pt.x = (short)LOWORD(lParam);
pt.y = (short)HIWORD(lParam);
switch (uMsg)
{
case WM_GETDLGCODE:
switch(btn_type)
{
case BS_COMMANDLINK:
case BS_USERBUTTON:
case BS_PUSHBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
case BS_DEFCOMMANDLINK:
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;
case BS_SPLITBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON | DLGC_WANTARROWS;
case BS_DEFSPLITBUTTON: return DLGC_BUTTON | DLGC_DEFPUSHBUTTON | DLGC_WANTARROWS;
default: return DLGC_BUTTON;
}
case WM_ENABLE:
theme = GetWindowTheme( hWnd );
if (theme)
RedrawWindow( hWnd, NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW );
else
paint_button( infoPtr, btn_type, ODA_DRAWENTIRE );
break;
case WM_NCCREATE:
{
CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
infoPtr = heap_alloc_zero( sizeof(*infoPtr) );
SetWindowLongPtrW( hWnd, 0, (LONG_PTR)infoPtr );
infoPtr->hwnd = hWnd;
infoPtr->parent = cs->hwndParent;
infoPtr->style = cs->style;
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
case WM_NCDESTROY:
SetWindowLongPtrW( hWnd, 0, 0 );
heap_free(infoPtr->note);
heap_free(infoPtr);
break;
case WM_CREATE:
if (btn_type >= MAX_BTN_TYPE)
return -1; /* abort */
/* XP turns a BS_USERBUTTON into BS_PUSHBUTTON */
if (btn_type == BS_USERBUTTON )
{
style = (style & ~BS_TYPEMASK) | BS_PUSHBUTTON;
SetWindowLongW( hWnd, GWL_STYLE, style );
}
infoPtr->state = BST_UNCHECKED;
OpenThemeData( hWnd, WC_BUTTONW );
return 0;
case WM_DESTROY:
theme = GetWindowTheme( hWnd );
CloseThemeData( theme );
break;
case WM_THEMECHANGED:
theme = GetWindowTheme( hWnd );
CloseThemeData( theme );
OpenThemeData( hWnd, WC_BUTTONW );
break;
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:
{
PAINTSTRUCT ps;
HDC hdc;
theme = GetWindowTheme( hWnd );
hdc = wParam ? (HDC)wParam : BeginPaint( hWnd, &ps );
if (theme && btnThemedPaintFunc[btn_type])
{
int drawState = get_draw_state(infoPtr);
UINT dtflags = BUTTON_BStoDT(style, GetWindowLongW(hWnd, GWL_EXSTYLE));
btnThemedPaintFunc[btn_type](theme, infoPtr, hdc, drawState, dtflags, infoPtr->state & BST_FOCUS);
}
else if (btnPaintFunc[btn_type])
{
int nOldMode = SetBkMode( hdc, OPAQUE );
btnPaintFunc[btn_type]( infoPtr, 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 );
infoPtr->state |= 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 );
infoPtr->state |= BUTTON_BTNPRESSED;
SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
break;
case WM_KEYUP:
if (wParam != VK_SPACE)
break;
/* fall through */
case WM_LBUTTONUP:
state = infoPtr->state;
if (!(state & BUTTON_BTNPRESSED)) break;
infoPtr->state &= BUTTON_NSTATES;
if (!(state & BST_PUSHED))
{
ReleaseCapture();
break;
}
SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
GetClientRect( hWnd, &rect );
if (uMsg == WM_KEYUP || PtInRect( &rect, pt ))
{
switch(btn_type)
{
case BS_AUTOCHECKBOX:
SendMessageW( hWnd, BM_SETCHECK, !(infoPtr->state & BST_CHECKED), 0 );
break;
case BS_AUTORADIOBUTTON:
SendMessageW( hWnd, BM_SETCHECK, TRUE, 0 );
break;
case BS_AUTO3STATE:
SendMessageW( hWnd, BM_SETCHECK, (infoPtr->state & BST_INDETERMINATE) ? 0 :
((infoPtr->state & 3) + 1), 0 );
break;
}
ReleaseCapture();
BUTTON_NOTIFY_PARENT(hWnd, BN_CLICKED);
}
else
{
ReleaseCapture();
}
break;
case WM_CAPTURECHANGED:
TRACE("WM_CAPTURECHANGED %p\n", hWnd);
if (hWnd == (HWND)lParam) break;
if (infoPtr->state & BUTTON_BTNPRESSED)
{
infoPtr->state &= BUTTON_NSTATES;
if (infoPtr->state & BST_PUSHED)
SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
}
break;
case WM_MOUSEMOVE:
{
TRACKMOUSEEVENT mouse_event;
mouse_event.cbSize = sizeof(TRACKMOUSEEVENT);
mouse_event.dwFlags = TME_QUERY;
if (!TrackMouseEvent(&mouse_event) || !(mouse_event.dwFlags & (TME_HOVER | TME_LEAVE)))
{
mouse_event.dwFlags = TME_HOVER | TME_LEAVE;
mouse_event.hwndTrack = hWnd;
mouse_event.dwHoverTime = 1;
TrackMouseEvent(&mouse_event);
}
if ((wParam & MK_LBUTTON) && GetCapture() == hWnd)
{
GetClientRect( hWnd, &rect );
SendMessageW( hWnd, BM_SETSTATE, PtInRect(&rect, pt), 0 );
}
break;
}
case WM_MOUSEHOVER:
{
infoPtr->state |= BST_HOT;
InvalidateRect( hWnd, NULL, FALSE );
break;
}
case WM_MOUSELEAVE:
{
infoPtr->state &= ~BST_HOT;
InvalidateRect( hWnd, NULL, FALSE );
break;
}
case WM_SETTEXT:
{
/* Clear an old text here as Windows does */
if (IsWindowVisible(hWnd))
{
HDC hdc = GetDC(hWnd);
HBRUSH hbrush;
RECT client, rc;
HWND parent = GetParent(hWnd);
UINT message = (btn_type == BS_PUSHBUTTON ||
btn_type == BS_DEFPUSHBUTTON ||
btn_type == BS_USERBUTTON ||
btn_type == BS_OWNERDRAW) ?
WM_CTLCOLORBTN : WM_CTLCOLORSTATIC;
if (!parent) parent = hWnd;
hbrush = (HBRUSH)SendMessageW(parent, message,
(WPARAM)hdc, (LPARAM)hWnd);
if (!hbrush) /* did the app forget to call DefWindowProc ? */
hbrush = (HBRUSH)DefWindowProcW(parent, message,
(WPARAM)hdc, (LPARAM)hWnd);
GetClientRect(hWnd, &client);
rc = client;
/* FIXME: check other BS_* handlers */
if (btn_type == BS_GROUPBOX)
InflateRect(&rc, -7, 1); /* GB_Paint does this */
BUTTON_CalcLayoutRects(infoPtr, hdc, &rc, NULL, NULL);
/* 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);
}
DefWindowProcW( hWnd, WM_SETTEXT, wParam, lParam );
if (btn_type == BS_GROUPBOX) /* Yes, only for BS_GROUPBOX */
InvalidateRect( hWnd, NULL, TRUE );
else
paint_button( infoPtr, btn_type, ODA_DRAWENTIRE );
return 1; /* success. FIXME: check text length */
}
case BCM_SETNOTE:
{
WCHAR *note = (WCHAR *)lParam;
if (btn_type != BS_COMMANDLINK && btn_type != BS_DEFCOMMANDLINK)
{
SetLastError(ERROR_NOT_SUPPORTED);
return FALSE;
}
heap_free(infoPtr->note);
if (note)
{
infoPtr->note_length = lstrlenW(note);
infoPtr->note = heap_strndupW(note, infoPtr->note_length);
}
if (!note || !infoPtr->note)
{
infoPtr->note_length = 0;
infoPtr->note = heap_alloc_zero(sizeof(WCHAR));
}
SetLastError(NO_ERROR);
return TRUE;
}
case BCM_GETNOTE:
{
DWORD *size = (DWORD *)wParam;
WCHAR *buffer = (WCHAR *)lParam;
INT length = 0;
if (btn_type != BS_COMMANDLINK && btn_type != BS_DEFCOMMANDLINK)
{
SetLastError(ERROR_NOT_SUPPORTED);
return FALSE;
}
if (!buffer || !size || !infoPtr->note)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (*size > 0)
{
length = min(*size - 1, infoPtr->note_length);
memcpy(buffer, infoPtr->note, length * sizeof(WCHAR));
buffer[length] = '\0';
}
if (*size < infoPtr->note_length + 1)
{
*size = infoPtr->note_length + 1;
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return FALSE;
}
else
{
SetLastError(NO_ERROR);
return TRUE;
}
}
case BCM_GETNOTELENGTH:
{
if (btn_type != BS_COMMANDLINK && btn_type != BS_DEFCOMMANDLINK)
{
SetLastError(ERROR_NOT_SUPPORTED);
return 0;
}
return infoPtr->note_length;
}
case WM_SETFONT:
infoPtr->font = (HFONT)wParam;
if (lParam) InvalidateRect(hWnd, NULL, TRUE);
break;
case WM_GETFONT:
return (LRESULT)infoPtr->font;
case WM_SETFOCUS:
TRACE("WM_SETFOCUS %p\n",hWnd);
infoPtr->state |= BST_FOCUS;
paint_button( infoPtr, btn_type, ODA_FOCUS );
if (style & BS_NOTIFY)
BUTTON_NOTIFY_PARENT(hWnd, BN_SETFOCUS);
break;
case WM_KILLFOCUS:
TRACE("WM_KILLFOCUS %p\n",hWnd);
infoPtr->state &= ~BST_FOCUS;
paint_button( infoPtr, btn_type, ODA_FOCUS );
if ((infoPtr->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_SETSTYLE:
btn_type = wParam & BS_TYPEMASK;
style = (style & ~BS_TYPEMASK) | btn_type;
SetWindowLongW( hWnd, GWL_STYLE, 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:
infoPtr->image_type = (DWORD)wParam;
oldHbitmap = infoPtr->u.image;
infoPtr->u.image = (HANDLE)lParam;
InvalidateRect( hWnd, NULL, FALSE );
return (LRESULT)oldHbitmap;
case BM_GETIMAGE:
return (LRESULT)infoPtr->u.image;
case BCM_SETIMAGELIST:
{
BUTTON_IMAGELIST *imagelist = (BUTTON_IMAGELIST *)lParam;
if (!imagelist) return FALSE;
infoPtr->imagelist = *imagelist;
return TRUE;
}
case BCM_GETIMAGELIST:
{
BUTTON_IMAGELIST *imagelist = (BUTTON_IMAGELIST *)lParam;
if (!imagelist) return FALSE;
*imagelist = infoPtr->imagelist;
return TRUE;
}
case BM_GETCHECK:
return infoPtr->state & 3;
case BM_SETCHECK:
if (wParam > maxCheckState[btn_type]) wParam = maxCheckState[btn_type];
if ((btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON))
{
style = wParam ? style | WS_TABSTOP : style & ~WS_TABSTOP;
SetWindowLongW( hWnd, GWL_STYLE, style );
}
if ((infoPtr->state & 3) != wParam)
{
infoPtr->state = (infoPtr->state & ~3) | wParam;
InvalidateRect( hWnd, NULL, FALSE );
}
if ((btn_type == BS_AUTORADIOBUTTON) && (wParam == BST_CHECKED) && (style & WS_CHILD))
BUTTON_CheckAutoRadioButton( hWnd );
break;
case BM_GETSTATE:
return infoPtr->state;
case BM_SETSTATE:
state = infoPtr->state;
new_state = wParam ? BST_PUSHED : 0;
if ((state ^ new_state) & BST_PUSHED)
{
if (wParam)
state |= BST_PUSHED;
else
state &= ~BST_PUSHED;
if (btn_type == BS_USERBUTTON)
BUTTON_NOTIFY_PARENT( hWnd, (state & BST_PUSHED) ? BN_HILITE : BN_UNHILITE );
infoPtr->state = state;
InvalidateRect( hWnd, NULL, FALSE );
}
break;
case BCM_SETTEXTMARGIN:
{
RECT *text_margin = (RECT *)lParam;
if (!text_margin) return FALSE;
infoPtr->text_margin = *text_margin;
return TRUE;
}
case BCM_GETTEXTMARGIN:
{
RECT *text_margin = (RECT *)lParam;
if (!text_margin) return FALSE;
*text_margin = infoPtr->text_margin;
return TRUE;
}
case BCM_GETIDEALSIZE:
{
SIZE *size = (SIZE *)lParam;
if (!size) return FALSE;
return btnGetIdealSizeFunc[btn_type](infoPtr, size);
}
case WM_NCHITTEST:
if(btn_type == BS_GROUPBOX) return HTTRANSPARENT;
/* fall through */
default:
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
return 0;
}
/* If maxWidth is zero, rectangle width is unlimited */
static RECT BUTTON_GetTextRect(const BUTTON_INFO *infoPtr, HDC hdc, const WCHAR *text, LONG maxWidth)
{
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
LONG exStyle = GetWindowLongW(infoPtr->hwnd, GWL_EXSTYLE);
UINT dtStyle = BUTTON_BStoDT(style, exStyle);
HFONT hPrevFont;
RECT rect = {0};
rect.right = maxWidth;
hPrevFont = SelectObject(hdc, infoPtr->font);
/* Calculate height without DT_VCENTER and DT_BOTTOM to get the correct height */
DrawTextW(hdc, text, -1, &rect, (dtStyle & ~(DT_VCENTER | DT_BOTTOM)) | DT_CALCRECT);
if (hPrevFont) SelectObject(hdc, hPrevFont);
return rect;
}
static BOOL show_image_only(const BUTTON_INFO *infoPtr)
{
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
return (style & (BS_ICON | BS_BITMAP)) && (infoPtr->u.image || infoPtr->imagelist.himl);
}
static BOOL show_image_and_text(const BUTTON_INFO *infoPtr)
{
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
UINT type = get_button_type(style);
return !(style & (BS_ICON | BS_BITMAP))
&& ((infoPtr->u.image
&& (type == BS_PUSHBUTTON || type == BS_DEFPUSHBUTTON || type == BS_USERBUTTON || type == BS_SPLITBUTTON
|| type == BS_DEFSPLITBUTTON || type == BS_COMMANDLINK || type == BS_DEFCOMMANDLINK))
|| (infoPtr->imagelist.himl && type != BS_GROUPBOX));
}
static BOOL show_image(const BUTTON_INFO *infoPtr)
{
return show_image_only(infoPtr) || show_image_and_text(infoPtr);
}
/* Get a bounding rectangle that is large enough to contain a image and a text side by side.
* Note: (left,top) of the result rectangle may not be (0,0), offset it by yourself if needed */
static RECT BUTTON_GetBoundingLabelRect(LONG style, const RECT *textRect, const RECT *imageRect)
{
RECT labelRect;
RECT rect = *imageRect;
INT textWidth = textRect->right - textRect->left;
INT textHeight = textRect->bottom - textRect->top;
INT imageWidth = imageRect->right - imageRect->left;
INT imageHeight = imageRect->bottom - imageRect->top;
if ((style & BS_CENTER) == BS_RIGHT)
OffsetRect(&rect, textWidth, 0);
else if ((style & BS_CENTER) == BS_LEFT)
OffsetRect(&rect, -imageWidth, 0);
else if ((style & BS_VCENTER) == BS_BOTTOM)
OffsetRect(&rect, 0, textHeight);
else if ((style & BS_VCENTER) == BS_TOP)
OffsetRect(&rect, 0, -imageHeight);
else
OffsetRect(&rect, -imageWidth, 0);
UnionRect(&labelRect, textRect, &rect);
return labelRect;
}
/* Position a rectangle inside a bounding rectangle according to button alignment flags */
static void BUTTON_PositionRect(LONG style, const RECT *outerRect, RECT *innerRect, const RECT *margin)
{
INT width = innerRect->right - innerRect->left;
INT height = innerRect->bottom - innerRect->top;
if ((style & WS_EX_RIGHT) && !(style & BS_CENTER)) style |= BS_CENTER;
if (!(style & BS_CENTER))
{
/* Push button's text is centered by default, all other types have left aligned text */
if (get_button_type(style) <= BS_DEFPUSHBUTTON)
style |= BS_CENTER;
else
style |= BS_LEFT;
}
if (!(style & BS_VCENTER))
{
/* Group box's text is top aligned by default */
if (get_button_type(style) == BS_GROUPBOX)
style |= BS_TOP;
}
switch (style & BS_CENTER)
{
case BS_CENTER:
innerRect->left = outerRect->left + (outerRect->right - outerRect->left - width) / 2;
innerRect->right = innerRect->left + width;
break;
case BS_RIGHT:
innerRect->right = outerRect->right - margin->right;
innerRect->left = innerRect->right - width;
break;
case BS_LEFT:
default:
innerRect->left = outerRect->left + margin->left;
innerRect->right = innerRect->left + width;
break;
}
switch (style & BS_VCENTER)
{
case BS_TOP:
innerRect->top = outerRect->top + margin->top;
innerRect->bottom = innerRect->top + height;
break;
case BS_BOTTOM:
innerRect->bottom = outerRect->bottom - margin->bottom;
innerRect->top = innerRect->bottom - height;
break;
case BS_VCENTER:
default:
innerRect->top = outerRect->top + (outerRect->bottom - outerRect->top - height) / 2;
innerRect->bottom = innerRect->top + height;
break;
}
}
/* Convert imagelist align style to button align style */
static UINT BUTTON_ILStoBS(UINT align)
{
switch (align)
{
case BUTTON_IMAGELIST_ALIGN_TOP:
return BS_CENTER | BS_TOP;
case BUTTON_IMAGELIST_ALIGN_BOTTOM:
return BS_CENTER | BS_BOTTOM;
case BUTTON_IMAGELIST_ALIGN_CENTER:
return BS_CENTER | BS_VCENTER;
case BUTTON_IMAGELIST_ALIGN_RIGHT:
return BS_RIGHT | BS_VCENTER;
case BUTTON_IMAGELIST_ALIGN_LEFT:
default:
return BS_LEFT | BS_VCENTER;
}
}
static SIZE BUTTON_GetImageSize(const BUTTON_INFO *infoPtr)
{
ICONINFO iconInfo;
BITMAP bm = {0};
SIZE size = {0};
/* ImageList has priority over image */
if (infoPtr->imagelist.himl)
ImageList_GetIconSize(infoPtr->imagelist.himl, &size.cx, &size.cy);
else if (infoPtr->u.image)
{
if (infoPtr->image_type == IMAGE_ICON)
{
GetIconInfo(infoPtr->u.icon, &iconInfo);
GetObjectW(iconInfo.hbmColor, sizeof(bm), &bm);
DeleteObject(iconInfo.hbmColor);
DeleteObject(iconInfo.hbmMask);
}
else if (infoPtr->image_type == IMAGE_BITMAP)
GetObjectW(infoPtr->u.bitmap, sizeof(bm), &bm);
size.cx = bm.bmWidth;
size.cy = bm.bmHeight;
}
return size;
}
static const RECT *BUTTON_GetTextMargin(const BUTTON_INFO *infoPtr)
{
static const RECT oneMargin = {1, 1, 1, 1};
/* Use text margin only when showing both image and text, and image is not imagelist */
if (show_image_and_text(infoPtr) && !infoPtr->imagelist.himl)
return &infoPtr->text_margin;
else
return &oneMargin;
}
static void BUTTON_GetClientRectSize(BUTTON_INFO *infoPtr, SIZE *size)
{
RECT rect;
GetClientRect(infoPtr->hwnd, &rect);
size->cx = rect.right - rect.left;
size->cy = rect.bottom - rect.top;
}
static void BUTTON_GetTextIdealSize(BUTTON_INFO *infoPtr, LONG maxWidth, SIZE *size)
{
WCHAR *text = get_button_text(infoPtr);
HDC hdc;
RECT rect;
const RECT *margin = BUTTON_GetTextMargin(infoPtr);
if (maxWidth != 0)
{
maxWidth -= margin->right + margin->right;
if (maxWidth <= 0) maxWidth = 1;
}
hdc = GetDC(infoPtr->hwnd);
rect = BUTTON_GetTextRect(infoPtr, hdc, text, maxWidth);
ReleaseDC(infoPtr->hwnd, hdc);
heap_free(text);
size->cx = rect.right - rect.left + margin->left + margin->right;
size->cy = rect.bottom - rect.top + margin->top + margin->bottom;
}
static void BUTTON_GetLabelIdealSize(BUTTON_INFO *infoPtr, LONG maxWidth, SIZE *size)
{
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
SIZE imageSize;
SIZE textSize;
BOOL horizontal;
imageSize = BUTTON_GetImageSize(infoPtr);
if (infoPtr->imagelist.himl)
{
imageSize.cx += infoPtr->imagelist.margin.left + infoPtr->imagelist.margin.right;
imageSize.cy += infoPtr->imagelist.margin.top + infoPtr->imagelist.margin.bottom;
if (infoPtr->imagelist.uAlign == BUTTON_IMAGELIST_ALIGN_TOP
|| infoPtr->imagelist.uAlign == BUTTON_IMAGELIST_ALIGN_BOTTOM)
horizontal = FALSE;
else
horizontal = TRUE;
}
else
{
/* horizontal alignment flags has priority over vertical ones if both are specified */
if (!(style & (BS_CENTER | BS_VCENTER)) || ((style & BS_CENTER) && (style & BS_CENTER) != BS_CENTER)
|| !(style & BS_VCENTER) || (style & BS_VCENTER) == BS_VCENTER)
horizontal = TRUE;
else
horizontal = FALSE;
}
if (horizontal)
{
if (maxWidth != 0)
{
maxWidth -= imageSize.cx;
if (maxWidth <= 0) maxWidth = 1;
}
BUTTON_GetTextIdealSize(infoPtr, maxWidth, &textSize);
size->cx = textSize.cx + imageSize.cx;
size->cy = max(textSize.cy, imageSize.cy);
}
else
{
BUTTON_GetTextIdealSize(infoPtr, maxWidth, &textSize);
size->cx = max(textSize.cx, imageSize.cx);
size->cy = textSize.cy + imageSize.cy;
}
}
static BOOL GB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size)
{
BUTTON_GetClientRectSize(infoPtr, size);
return TRUE;
}
static BOOL CB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size)
{
LONG style = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
WCHAR *text = get_button_text(infoPtr);
HDC hdc;
HFONT hfont;
SIZE labelSize;
INT textOffset;
INT textLength = 0;
double scaleX;
double scaleY;
LONG checkboxWidth, checkboxHeight;
LONG maxWidth = 0;
if (text) textLength = lstrlenW(text);
heap_free(text);
if (textLength == 0)
{
BUTTON_GetClientRectSize(infoPtr, size);
return TRUE;
}
hdc = GetDC(infoPtr->hwnd);
scaleX = GetDeviceCaps(hdc, LOGPIXELSX) / 96.0;
scaleY = GetDeviceCaps(hdc, LOGPIXELSY) / 96.0;
if ((hfont = infoPtr->font)) SelectObject(hdc, hfont);
GetCharWidthW(hdc, '0', '0', &textOffset);
textOffset /= 2;
ReleaseDC(infoPtr->hwnd, hdc);
checkboxWidth = 12 * scaleX + 1;
checkboxHeight = 12 * scaleY + 1;
if (size->cx)
{
maxWidth = size->cx - checkboxWidth - textOffset;
if (maxWidth <= 0) maxWidth = 1;
}
/* Checkbox doesn't support both image(but not image list) and text */
if (!(style & (BS_ICON | BS_BITMAP)) && infoPtr->u.image)
BUTTON_GetTextIdealSize(infoPtr, maxWidth, &labelSize);
else
BUTTON_GetLabelIdealSize(infoPtr, maxWidth, &labelSize);
size->cx = labelSize.cx + checkboxWidth + textOffset;
size->cy = max(labelSize.cy, checkboxHeight);
return TRUE;
}
static BOOL PB_GetIdealSize(BUTTON_INFO *infoPtr, SIZE *size)
{
WCHAR *text = get_button_text(infoPtr);
SIZE labelSize;
INT textLength = 0;
if (text) textLength = lstrlenW(text);
if (textLength == 0)
{
BUTTON_GetClientRectSize(infoPtr, size);
heap_free(text);
return TRUE;
}
heap_free(text);
/* Ideal size include text size even if image only flags(BS_ICON, BS_BITMAP) are specified */
BUTTON_GetLabelIdealSize(infoPtr, size->cx, &labelSize);
size->cx = labelSize.cx;
size->cy = labelSize.cy;
return TRUE;
}
/**********************************************************************
* BUTTON_CalcLayoutRects
*
* Calculates the rectangles of the button label(image and text) and its parts depending on a button's 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.
*
* PARAMS:
* infoPtr [I] Button pointer
* hdc [I] Handle to device context to draw to
* labelRc [I/O] Input the rect the label to be positioned in, and output the label rect
* imageRc [O] Optional, output the image rect
* textRc [O] Optional, output the text rect
*/
static UINT BUTTON_CalcLayoutRects(const BUTTON_INFO *infoPtr, HDC hdc, RECT *labelRc, RECT *imageRc, RECT *textRc)
{
LONG style = GetWindowLongW( infoPtr->hwnd, GWL_STYLE );
LONG ex_style = GetWindowLongW( infoPtr->hwnd, GWL_EXSTYLE );
LONG split_style = infoPtr->imagelist.himl ? BUTTON_ILStoBS(infoPtr->imagelist.uAlign) : style;
WCHAR *text = get_button_text(infoPtr);
SIZE imageSize = BUTTON_GetImageSize(infoPtr);
UINT dtStyle = BUTTON_BStoDT(style, ex_style);
RECT labelRect, imageRect, imageRectWithMargin, textRect;
LONG imageMarginWidth, imageMarginHeight;
const RECT *textMargin = BUTTON_GetTextMargin(infoPtr);
RECT emptyMargin = {0};
LONG maxTextWidth;
/* Calculate label rectangle according to label type */
if ((imageSize.cx == 0 && imageSize.cy == 0) && (text == NULL || text[0] == '\0'))
{
SetRectEmpty(labelRc);
SetRectEmpty(imageRc);
SetRectEmpty(textRc);
heap_free(text);
return (UINT)-1;
}
SetRect(&imageRect, 0, 0, imageSize.cx, imageSize.cy);
imageRectWithMargin = imageRect;
if (infoPtr->imagelist.himl)
{
imageRectWithMargin.top -= infoPtr->imagelist.margin.top;
imageRectWithMargin.bottom += infoPtr->imagelist.margin.bottom;
imageRectWithMargin.left -= infoPtr->imagelist.margin.left;
imageRectWithMargin.right += infoPtr->imagelist.margin.right;
}
/* Show image only */
if (show_image_only(infoPtr))
{
BUTTON_PositionRect(style, labelRc, &imageRect,
infoPtr->imagelist.himl ? &infoPtr->imagelist.margin : &emptyMargin);
labelRect = imageRect;
SetRectEmpty(&textRect);
}
else
{
/* Get text rect */
maxTextWidth = labelRc->right - labelRc->left;
textRect = BUTTON_GetTextRect(infoPtr, hdc, text, maxTextWidth);
/* Show image and text */
if (show_image_and_text(infoPtr))
{
RECT boundingLabelRect, boundingImageRect, boundingTextRect;
/* Get label rect */
/* Image list may have different alignment than the button, use the whole rect for label in this case */
if (infoPtr->imagelist.himl)
labelRect = *labelRc;
else
{
/* Get a label bounding rectangle to position the label in the user specified label rectangle because
* text and image need to align together. */
boundingLabelRect = BUTTON_GetBoundingLabelRect(split_style, &textRect, &imageRectWithMargin);
BUTTON_PositionRect(split_style, labelRc, &boundingLabelRect, &emptyMargin);
labelRect = boundingLabelRect;
}
/* When imagelist has center align, use the whole rect for imagelist and text */
if(infoPtr->imagelist.himl && infoPtr->imagelist.uAlign == BUTTON_IMAGELIST_ALIGN_CENTER)
{
boundingImageRect = labelRect;
boundingTextRect = labelRect;
BUTTON_PositionRect(split_style, &boundingImageRect, &imageRect,
infoPtr->imagelist.himl ? &infoPtr->imagelist.margin : &emptyMargin);
/* Text doesn't use imagelist align */
BUTTON_PositionRect(style, &boundingTextRect, &textRect, textMargin);
}
else
{
/* Get image rect */
/* Split the label rect to two halves as two bounding rectangles for image and text */
boundingImageRect = labelRect;
imageMarginWidth = imageRectWithMargin.right - imageRectWithMargin.left;
imageMarginHeight = imageRectWithMargin.bottom - imageRectWithMargin.top;
if ((split_style & BS_CENTER) == BS_RIGHT)
boundingImageRect.left = boundingImageRect.right - imageMarginWidth;
else if ((split_style & BS_CENTER) == BS_LEFT)
boundingImageRect.right = boundingImageRect.left + imageMarginWidth;
else if ((split_style & BS_VCENTER) == BS_BOTTOM)
boundingImageRect.top = boundingImageRect.bottom - imageMarginHeight;
else if ((split_style & BS_VCENTER) == BS_TOP)
boundingImageRect.bottom = boundingImageRect.top + imageMarginHeight;
else
boundingImageRect.right = boundingImageRect.left + imageMarginWidth;
BUTTON_PositionRect(split_style, &boundingImageRect, &imageRect,
infoPtr->imagelist.himl ? &infoPtr->imagelist.margin : &emptyMargin);
/* Get text rect */
SubtractRect(&boundingTextRect, &labelRect, &boundingImageRect);
/* Text doesn't use imagelist align */
BUTTON_PositionRect(style, &boundingTextRect, &textRect, textMargin);
}
}
/* Show text only */
else
{
if (get_button_type(style) != BS_GROUPBOX)
BUTTON_PositionRect(style, labelRc, &textRect, textMargin);
else
/* GroupBox is always top aligned */
BUTTON_PositionRect((style & ~BS_VCENTER) | BS_TOP, labelRc, &textRect, textMargin);
labelRect = textRect;
SetRectEmpty(&imageRect);
}
}
heap_free(text);
CopyRect(labelRc, &labelRect);
CopyRect(imageRc, &imageRect);
CopyRect(textRc, &textRect);
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;
SetRect(&rc, 0, 0, cx, cy);
DrawTextW(hdc, (LPCWSTR)lp, -1, &rc, (UINT)wp);
return TRUE;
}
/**********************************************************************
* BUTTON_DrawLabel
*
* Common function for drawing button label.
*
* FIXME:
* 1. When BS_SINGLELINE is specified and text contains '\t', '\n' or '\r' in the middle, they are rendered as
* squares now whereas they should be ignored.
* 2. When BS_MULTILINE is specified and text contains space in the middle, the space mistakenly be rendered as newline.
*/
static void BUTTON_DrawLabel(const BUTTON_INFO *infoPtr, HDC hdc, UINT dtFlags, const RECT *imageRect,
const RECT *textRect)
{
DRAWSTATEPROC lpOutputProc = NULL;
LPARAM lp;
WPARAM wp = 0;
HBRUSH hbr = 0;
UINT flags = IsWindowEnabled(infoPtr->hwnd) ? DSS_NORMAL : DSS_DISABLED;
UINT imageFlags;
LONG state = infoPtr->state;
LONG draw_state;
LONG style = GetWindowLongW( infoPtr->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 & BST_INDETERMINATE))
{
hbr = GetSysColorBrush(COLOR_GRAYTEXT);
flags |= DSS_MONO;
}
if (show_image(infoPtr))
{
if (infoPtr->imagelist.himl)
{
if (ImageList_GetImageCount(infoPtr->imagelist.himl) == 1)
ImageList_Draw(infoPtr->imagelist.himl, 0, hdc, imageRect->left, imageRect->top, ILD_NORMAL);
else
{
draw_state = get_draw_state(infoPtr);
ImageList_Draw(infoPtr->imagelist.himl, draw_state - 1, hdc, imageRect->left, imageRect->top,
ILD_NORMAL);
}
}
else
{
switch (infoPtr->image_type)
{
case IMAGE_ICON:
imageFlags = flags | DST_ICON;
lp = (LPARAM)infoPtr->u.icon;
break;
case IMAGE_BITMAP:
imageFlags = flags | DST_BITMAP;
lp = (LPARAM)infoPtr->u.bitmap;
break;
default:
return;
}
DrawStateW(hdc, hbr, lpOutputProc, lp, wp, imageRect->left, imageRect->top,
imageRect->right - imageRect->left, imageRect->bottom - imageRect->top, imageFlags);
}
}
if (show_image_only(infoPtr)) return;
/* DST_COMPLEX -- is 0 */
lpOutputProc = BUTTON_DrawTextCallback;
if (!(text = get_button_text(infoPtr))) return;
lp = (LPARAM)text;
wp = dtFlags;
DrawStateW(hdc, hbr, lpOutputProc, lp, wp, textRect->left, textRect->top, textRect->right - textRect->left,
textRect->bottom - textRect->top, flags);
heap_free(text);
}
/**********************************************************************
* Push Button Functions
*/
static void PB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action )
{
RECT rc, labelRect, imageRect, textRect;
UINT dtFlags, uState;
HPEN hOldPen, hpen;
HBRUSH hOldBrush;
INT oldBkMode;
COLORREF oldTxtColor;
HFONT hFont;
LONG state = infoPtr->state;
LONG style = GetWindowLongW( infoPtr->hwnd, GWL_STYLE );
BOOL pushedState = (state & BST_PUSHED);
HWND parent;
HRGN hrgn;
GetClientRect( infoPtr->hwnd, &rc );
/* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
if ((hFont = infoPtr->font)) SelectObject( hDC, hFont );
parent = GetParent(infoPtr->hwnd);
if (!parent) parent = infoPtr->hwnd;
SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)infoPtr->hwnd );
hrgn = set_control_clipping( hDC, &rc );
hpen = CreatePen( PS_SOLID, 1, GetSysColor(COLOR_WINDOWFRAME));
hOldPen = SelectObject(hDC, hpen);
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 );
}
/* completely skip the drawing if only focus has changed */
if (action == ODA_FOCUS) goto draw_focus;
uState = DFCS_BUTTONPUSH;
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 & (BST_CHECKED | BST_INDETERMINATE))
uState |= DFCS_CHECKED;
DrawFrameControl( hDC, &rc, DFC_BUTTON, uState );
/* draw button label */
labelRect = rc;
/* Shrink label rect at all sides by 2 so that the content won't touch the surrounding frame */
InflateRect(&labelRect, -2, -2);
dtFlags = BUTTON_CalcLayoutRects(infoPtr, hDC, &labelRect, &imageRect, &textRect);
if (dtFlags == (UINT)-1L)
goto cleanup;
if (pushedState) OffsetRect(&labelRect, 1, 1);
oldTxtColor = SetTextColor( hDC, GetSysColor(COLOR_BTNTEXT) );
BUTTON_DrawLabel(infoPtr, hDC, dtFlags, &imageRect, &textRect);
SetTextColor( hDC, oldTxtColor );
draw_focus:
if (action == ODA_FOCUS || (state & BST_FOCUS))
{
InflateRect( &rc, -2, -2 );
DrawFocusRect( hDC, &rc );
}
cleanup:
SelectObject( hDC, hOldPen );
SelectObject( hDC, hOldBrush );
SetBkMode(hDC, oldBkMode);
SelectClipRgn( hDC, hrgn );
if (hrgn) DeleteObject( hrgn );
DeleteObject( hpen );
}
/**********************************************************************
* Check Box & Radio Button Functions
*/
static void CB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action )
{
RECT rbox, labelRect, imageRect, textRect, client;
HBRUSH hBrush;
int delta, text_offset, checkBoxWidth, checkBoxHeight;
UINT dtFlags;
HFONT hFont;
LONG state = infoPtr->state;
LONG style = GetWindowLongW( infoPtr->hwnd, GWL_STYLE );
LONG ex_style = GetWindowLongW( infoPtr->hwnd, GWL_EXSTYLE );
HWND parent;
HRGN hrgn;
if (style & BS_PUSHLIKE)
{
PB_Paint( infoPtr, hDC, action );
return;
}
GetClientRect(infoPtr->hwnd, &client);
rbox = labelRect = client;
checkBoxWidth = 12 * GetDpiForWindow( infoPtr->hwnd ) / 96 + 1;
checkBoxHeight = 12 * GetDpiForWindow( infoPtr->hwnd ) / 96 + 1;
if ((hFont = infoPtr->font)) SelectObject( hDC, hFont );
GetCharWidthW( hDC, '0', '0', &text_offset );
text_offset /= 2;
parent = GetParent(infoPtr->hwnd);
if (!parent) parent = infoPtr->hwnd;
hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
if (!hBrush) /* did the app forget to call defwindowproc ? */
hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
hrgn = set_control_clipping( hDC, &client );
if (style & BS_LEFTTEXT || ex_style & WS_EX_RIGHT)
{
labelRect.right -= checkBoxWidth + text_offset;
rbox.left = rbox.right - checkBoxWidth;
}
else
{
labelRect.left += checkBoxWidth + text_offset;
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 = labelRect;
dtFlags = BUTTON_CalcLayoutRects(infoPtr, hDC, &labelRect, &imageRect, &textRect);
/* Only adjust rbox when rtext is valid */
if (dtFlags != (UINT)-1L)
{
rbox.top = labelRect.top;
rbox.bottom = labelRect.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 & BST_INDETERMINATE) flags = DFCS_BUTTON3STATE;
else flags = DFCS_BUTTONCHECK;
if (state & (BST_CHECKED | BST_INDETERMINATE)) flags |= DFCS_CHECKED;
if (state & BST_PUSHED) 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_VCENTER) == 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_VCENTER) == 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(infoPtr, hDC, dtFlags, &imageRect, &textRect);
/* ... and focus */
if (action == ODA_FOCUS || (state & BST_FOCUS))
{
labelRect.left--;
labelRect.right++;
IntersectRect(&labelRect, &labelRect, &client);
DrawFocusRect(hDC, &labelRect);
}
SelectClipRgn( hDC, hrgn );
if (hrgn) DeleteObject( hrgn );
}
/**********************************************************************
* 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) & BS_TYPEMASK) == BS_AUTORADIOBUTTON))
SendMessageW( sibling, BM_SETCHECK, BST_UNCHECKED, 0 );
sibling = GetNextDlgGroupItem( parent, sibling, FALSE );
} while (sibling != start);
}
/**********************************************************************
* Group Box Functions
*/
static void GB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action )
{
RECT labelRect, imageRect, textRect, rcFrame;
HBRUSH hbr;
HFONT hFont;
UINT dtFlags;
TEXTMETRICW tm;
LONG style = GetWindowLongW( infoPtr->hwnd, GWL_STYLE );
HWND parent;
HRGN hrgn;
if ((hFont = infoPtr->font)) SelectObject( hDC, hFont );
/* GroupBox acts like static control, so it sends CTLCOLORSTATIC */
parent = GetParent(infoPtr->hwnd);
if (!parent) parent = infoPtr->hwnd;
hbr = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
if (!hbr) /* did the app forget to call defwindowproc ? */
hbr = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
GetClientRect(infoPtr->hwnd, &labelRect);
rcFrame = labelRect;
hrgn = set_control_clipping(hDC, &labelRect);
GetTextMetricsW (hDC, &tm);
rcFrame.top += (tm.tmHeight / 2) - 1;
DrawEdge (hDC, &rcFrame, EDGE_ETCHED, BF_RECT | ((style & BS_FLAT) ? BF_FLAT : 0));
InflateRect(&labelRect, -7, 1);
dtFlags = BUTTON_CalcLayoutRects(infoPtr, hDC, &labelRect, &imageRect, &textRect);
if (dtFlags != (UINT)-1)
{
/* 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 */
labelRect.left--;
labelRect.right++;
labelRect.bottom++;
FillRect(hDC, &labelRect, hbr);
labelRect.left++;
labelRect.right--;
labelRect.bottom--;
BUTTON_DrawLabel(infoPtr, hDC, dtFlags, &imageRect, &textRect);
}
SelectClipRgn( hDC, hrgn );
if (hrgn) DeleteObject( hrgn );
}
/**********************************************************************
* User Button Functions
*/
static void UB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action )
{
RECT rc;
HBRUSH hBrush;
HFONT hFont;
LONG state = infoPtr->state;
HWND parent;
GetClientRect( infoPtr->hwnd, &rc);
if ((hFont = infoPtr->font)) SelectObject( hDC, hFont );
parent = GetParent(infoPtr->hwnd);
if (!parent) parent = infoPtr->hwnd;
hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
if (!hBrush) /* did the app forget to call defwindowproc ? */
hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)infoPtr->hwnd);
FillRect( hDC, &rc, hBrush );
if (action == ODA_FOCUS || (state & BST_FOCUS))
DrawFocusRect( hDC, &rc );
switch (action)
{
case ODA_FOCUS:
BUTTON_NOTIFY_PARENT( infoPtr->hwnd, (state & BST_FOCUS) ? BN_SETFOCUS : BN_KILLFOCUS );
break;
case ODA_SELECT:
BUTTON_NOTIFY_PARENT( infoPtr->hwnd, (state & BST_PUSHED) ? BN_HILITE : BN_UNHILITE );
break;
default:
break;
}
}
/**********************************************************************
* Ownerdrawn Button Functions
*/
static void OB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT action )
{
LONG state = infoPtr->state;
DRAWITEMSTRUCT dis;
LONG_PTR id = GetWindowLongPtrW( infoPtr->hwnd, GWLP_ID );
HWND parent;
HFONT hFont;
HRGN hrgn;
dis.CtlType = ODT_BUTTON;
dis.CtlID = id;
dis.itemID = 0;
dis.itemAction = action;
dis.itemState = ((state & BST_FOCUS) ? ODS_FOCUS : 0) |
((state & BST_PUSHED) ? ODS_SELECTED : 0) |
(IsWindowEnabled(infoPtr->hwnd) ? 0: ODS_DISABLED);
dis.hwndItem = infoPtr->hwnd;
dis.hDC = hDC;
dis.itemData = 0;
GetClientRect( infoPtr->hwnd, &dis.rcItem );
if ((hFont = infoPtr->font)) SelectObject( hDC, hFont );
parent = GetParent(infoPtr->hwnd);
if (!parent) parent = infoPtr->hwnd;
SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)infoPtr->hwnd );
hrgn = set_control_clipping( hDC, &dis.rcItem );
SendMessageW( GetParent(infoPtr->hwnd), WM_DRAWITEM, id, (LPARAM)&dis );
SelectClipRgn( hDC, hrgn );
if (hrgn) DeleteObject( hrgn );
}
static void PB_ThemedPaint(HTHEME theme, const BUTTON_INFO *infoPtr, HDC hDC, int state, UINT dtFlags, BOOL focused)
{
RECT bgRect, textRect;
HFONT font = infoPtr->font;
HFONT hPrevFont = font ? SelectObject(hDC, font) : NULL;
WCHAR *text = get_button_text(infoPtr);
GetClientRect(infoPtr->hwnd, &bgRect);
GetThemeBackgroundContentRect(theme, hDC, BP_PUSHBUTTON, state, &bgRect, &textRect);
if (IsThemeBackgroundPartiallyTransparent(theme, BP_PUSHBUTTON, state))
DrawThemeParentBackground(infoPtr->hwnd, hDC, NULL);
DrawThemeBackground(theme, hDC, BP_PUSHBUTTON, state, &bgRect, NULL);
if (text)
{
DrawThemeText(theme, hDC, BP_PUSHBUTTON, state, text, lstrlenW(text), dtFlags, 0, &textRect);
heap_free(text);
}
if (focused)
{
MARGINS margins;
RECT focusRect = bgRect;
GetThemeMargins(theme, hDC, BP_PUSHBUTTON, state, TMT_CONTENTMARGINS, NULL, &margins);
focusRect.left += margins.cxLeftWidth;
focusRect.top += margins.cyTopHeight;
focusRect.right -= margins.cxRightWidth;
focusRect.bottom -= margins.cyBottomHeight;
DrawFocusRect( hDC, &focusRect );
}
if (hPrevFont) SelectObject(hDC, hPrevFont);
}
static void CB_ThemedPaint(HTHEME theme, const BUTTON_INFO *infoPtr, HDC hDC, int state, UINT dtFlags, BOOL focused)
{
SIZE sz;
RECT bgRect, textRect;
HFONT font, hPrevFont = NULL;
DWORD dwStyle = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
UINT btn_type = get_button_type( dwStyle );
int part = (btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON) ? BP_RADIOBUTTON : BP_CHECKBOX;
WCHAR *text = get_button_text(infoPtr);
LOGFONTW lf;
BOOL created_font = FALSE;
HRESULT hr = GetThemeFont(theme, hDC, part, state, TMT_FONT, &lf);
if (SUCCEEDED(hr)) {
font = CreateFontIndirectW(&lf);
if (!font)
TRACE("Failed to create font\n");
else {
TRACE("font = %s\n", debugstr_w(lf.lfFaceName));
hPrevFont = SelectObject(hDC, font);
created_font = TRUE;
}
} else {
font = (HFONT)SendMessageW(infoPtr->hwnd, WM_GETFONT, 0, 0);
hPrevFont = SelectObject(hDC, font);
}
if (FAILED(GetThemePartSize(theme, hDC, part, state, NULL, TS_DRAW, &sz)))
sz.cx = sz.cy = 13;
GetClientRect(infoPtr->hwnd, &bgRect);
GetThemeBackgroundContentRect(theme, hDC, part, state, &bgRect, &textRect);
if (dtFlags & DT_SINGLELINE) /* Center the checkbox / radio button to the text. */
bgRect.top = bgRect.top + (textRect.bottom - textRect.top - sz.cy) / 2;
/* adjust for the check/radio marker */
bgRect.bottom = bgRect.top + sz.cy;
bgRect.right = bgRect.left + sz.cx;
textRect.left = bgRect.right + 6;
DrawThemeParentBackground(infoPtr->hwnd, hDC, NULL);
DrawThemeBackground(theme, hDC, part, state, &bgRect, NULL);
if (text)
{
DrawThemeText(theme, hDC, part, state, text, lstrlenW(text), dtFlags, 0, &textRect);
if (focused)
{
RECT focusRect;
focusRect = textRect;
DrawTextW(hDC, text, lstrlenW(text), &focusRect, dtFlags | DT_CALCRECT);
if (focusRect.right < textRect.right) focusRect.right++;
focusRect.bottom = textRect.bottom;
DrawFocusRect( hDC, &focusRect );
}
heap_free(text);
}
if (created_font) DeleteObject(font);
if (hPrevFont) SelectObject(hDC, hPrevFont);
}
static void GB_ThemedPaint(HTHEME theme, const BUTTON_INFO *infoPtr, HDC hDC, int state, UINT dtFlags, BOOL focused)
{
RECT bgRect, textRect, contentRect;
WCHAR *text = get_button_text(infoPtr);
LOGFONTW lf;
HFONT font, hPrevFont = NULL;
BOOL created_font = FALSE;
HRESULT hr = GetThemeFont(theme, hDC, BP_GROUPBOX, state, TMT_FONT, &lf);
if (SUCCEEDED(hr)) {
font = CreateFontIndirectW(&lf);
if (!font)
TRACE("Failed to create font\n");
else {
hPrevFont = SelectObject(hDC, font);
created_font = TRUE;
}
} else {
font = (HFONT)SendMessageW(infoPtr->hwnd, WM_GETFONT, 0, 0);
hPrevFont = SelectObject(hDC, font);
}
GetClientRect(infoPtr->hwnd, &bgRect);
textRect = bgRect;
if (text)
{
SIZE textExtent;
GetTextExtentPoint32W(hDC, text, lstrlenW(text), &textExtent);
bgRect.top += (textExtent.cy / 2);
textRect.left += 10;
textRect.bottom = textRect.top + textExtent.cy;
textRect.right = textRect.left + textExtent.cx + 4;
ExcludeClipRect(hDC, textRect.left, textRect.top, textRect.right, textRect.bottom);
}
GetThemeBackgroundContentRect(theme, hDC, BP_GROUPBOX, state, &bgRect, &contentRect);
ExcludeClipRect(hDC, contentRect.left, contentRect.top, contentRect.right, contentRect.bottom);
if (IsThemeBackgroundPartiallyTransparent(theme, BP_GROUPBOX, state))
DrawThemeParentBackground(infoPtr->hwnd, hDC, NULL);
DrawThemeBackground(theme, hDC, BP_GROUPBOX, state, &bgRect, NULL);
SelectClipRgn(hDC, NULL);
if (text)
{
InflateRect(&textRect, -2, 0);
DrawThemeText(theme, hDC, BP_GROUPBOX, state, text, lstrlenW(text), 0, 0, &textRect);
heap_free(text);
}
if (created_font) DeleteObject(font);
if (hPrevFont) SelectObject(hDC, hPrevFont);
}
void BUTTON_Register(void)
{
WNDCLASSW wndClass;
memset(&wndClass, 0, sizeof(wndClass));
wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC;
wndClass.lpfnWndProc = BUTTON_WindowProc;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = sizeof(BUTTON_INFO *);
wndClass.hCursor = LoadCursorW(0, (LPWSTR)IDC_ARROW);
wndClass.hbrBackground = NULL;
wndClass.lpszClassName = WC_BUTTONW;
RegisterClassW(&wndClass);
}
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