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Sweden-Number/windows/caret.c

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/*
* Caret functions
*
* Copyright 1993 David Metcalfe
* Copyright 1996 Frans van Dorsselaer
* Copyright 2001 Eric Pouech
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/wingdi16.h"
#include "wine/winuser16.h"
#include "win.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(caret);
typedef struct
{
HWND hwnd;
UINT hidden;
BOOL on;
INT x;
INT y;
INT width;
INT height;
HBITMAP hBmp;
UINT timeout;
UINT timerid;
} CARET;
typedef enum
{
CARET_OFF = 0,
CARET_ON,
CARET_TOGGLE
} DISPLAY_CARET;
static CARET Caret = { 0, 0, FALSE, 0, 0, 2, 12, 0, 500, 0 };
/*****************************************************************
* CARET_GetHwnd
*/
HWND CARET_GetHwnd(void)
{
return Caret.hwnd;
}
/*****************************************************************
* CARET_GetRect
*/
void CARET_GetRect(LPRECT lprc)
{
lprc->right = (lprc->left = Caret.x) + Caret.width - 1;
lprc->bottom = (lprc->top = Caret.y) + Caret.height - 1;
}
/*****************************************************************
* CARET_DisplayCaret
*/
static void CARET_DisplayCaret( DISPLAY_CARET status )
{
HDC hdc;
HDC hCompDC;
if (Caret.on && (status == CARET_ON)) return;
if (!Caret.on && (status == CARET_OFF)) return;
/* So now it's always a toggle */
Caret.on = !Caret.on;
/* do not use DCX_CACHE here, for x,y,width,height are in logical units */
if (!(hdc = GetDCEx( Caret.hwnd, 0, DCX_USESTYLE /*| DCX_CACHE*/ ))) return;
hCompDC = CreateCompatibleDC(hdc);
if (hCompDC)
{
HBITMAP hPrevBmp;
hPrevBmp = SelectObject(hCompDC, Caret.hBmp);
BitBlt(hdc, Caret.x, Caret.y, Caret.width, Caret.height, hCompDC, 0, 0, SRCINVERT);
SelectObject(hCompDC, hPrevBmp);
DeleteDC(hCompDC);
}
ReleaseDC( Caret.hwnd, hdc );
}
/*****************************************************************
* CARET_Callback
*/
static VOID CALLBACK CARET_Callback( HWND hwnd, UINT msg, UINT id, DWORD ctime)
{
TRACE("hwnd=%04x, timerid=%d, caret=%d\n",
hwnd, id, Caret.on);
CARET_DisplayCaret(CARET_TOGGLE);
}
/*****************************************************************
* CARET_SetTimer
*/
static void CARET_SetTimer(void)
{
if (Caret.timerid) KillSystemTimer( (HWND)0, Caret.timerid );
Caret.timerid = SetSystemTimer( (HWND)0, 0, Caret.timeout,
CARET_Callback );
}
/*****************************************************************
* CARET_ResetTimer
*/
static void CARET_ResetTimer(void)
{
if (Caret.timerid)
{
KillSystemTimer( (HWND)0, Caret.timerid );
Caret.timerid = SetSystemTimer( (HWND)0, 0, Caret.timeout,
CARET_Callback );
}
}
/*****************************************************************
* CARET_KillTimer
*/
static void CARET_KillTimer(void)
{
if (Caret.timerid)
{
KillSystemTimer( (HWND)0, Caret.timerid );
Caret.timerid = 0;
}
}
/*****************************************************************
* CreateCaret (USER32.@)
*/
BOOL WINAPI CreateCaret( HWND hwnd, HBITMAP bitmap,
INT width, INT height )
{
TRACE("hwnd=%04x\n", hwnd);
if (!hwnd) return FALSE;
/* if cursor already exists, destroy it */
if (Caret.hwnd) DestroyCaret();
if (bitmap && (bitmap != 1))
{
BITMAP bmp;
if (!GetObjectA( bitmap, sizeof(bmp), &bmp )) return FALSE;
Caret.width = bmp.bmWidth;
Caret.height = bmp.bmHeight;
bmp.bmBits = NULL;
Caret.hBmp = CreateBitmapIndirect(&bmp);
if (Caret.hBmp)
{
/* copy the bitmap */
LPBYTE buf = HeapAlloc(GetProcessHeap(), 0, bmp.bmWidthBytes * bmp.bmHeight);
GetBitmapBits(bitmap, bmp.bmWidthBytes * bmp.bmHeight, buf);
SetBitmapBits(Caret.hBmp, bmp.bmWidthBytes * bmp.bmHeight, buf);
HeapFree(GetProcessHeap(), 0, buf);
}
}
else
{
HDC hdc;
Caret.width = width ? width : GetSystemMetrics(SM_CXBORDER);
Caret.height = height ? height : GetSystemMetrics(SM_CYBORDER);
Caret.hBmp = 0;
/* create the uniform bitmap on the fly */
hdc = GetDC(hwnd);
if (hdc)
{
HDC hMemDC = CreateCompatibleDC(hdc);
if (hMemDC)
{
RECT r;
r.left = r.top = 0;
r.right = Caret.width;
r.bottom = Caret.height;
if ((Caret.hBmp = CreateCompatibleBitmap(hMemDC, Caret.width, Caret.height)))
{
HBITMAP hPrevBmp = SelectObject(hMemDC, Caret.hBmp);
FillRect(hMemDC, &r, (bitmap ? COLOR_GRAYTEXT : COLOR_WINDOW) + 1);
SelectObject(hMemDC, hPrevBmp);
}
DeleteDC(hMemDC);
}
ReleaseDC(hwnd, hdc);
}
}
Caret.hwnd = WIN_GetFullHandle( hwnd );
Caret.hidden = 1;
Caret.on = FALSE;
Caret.x = 0;
Caret.y = 0;
Caret.timeout = GetProfileIntA( "windows", "CursorBlinkRate", 500 );
return TRUE;
}
/*****************************************************************
* DestroyCaret (USER.164)
*/
void WINAPI DestroyCaret16(void)
{
DestroyCaret();
}
/*****************************************************************
* DestroyCaret (USER32.@)
*/
BOOL WINAPI DestroyCaret(void)
{
if (!Caret.hwnd) return FALSE;
TRACE("hwnd=%04x, timerid=%d\n",
Caret.hwnd, Caret.timerid);
CARET_KillTimer();
CARET_DisplayCaret(CARET_OFF);
DeleteObject( Caret.hBmp );
Caret.hwnd = 0;
return TRUE;
}
/*****************************************************************
* SetCaretPos (USER.165)
*/
void WINAPI SetCaretPos16( INT16 x, INT16 y )
{
SetCaretPos( x, y );
}
/*****************************************************************
* SetCaretPos (USER32.@)
*/
BOOL WINAPI SetCaretPos( INT x, INT y)
{
if (!Caret.hwnd) return FALSE;
if ((x == Caret.x) && (y == Caret.y)) return TRUE;
TRACE("x=%d, y=%d\n", x, y);
CARET_KillTimer();
CARET_DisplayCaret(CARET_OFF);
Caret.x = x;
Caret.y = y;
if (!Caret.hidden)
{
CARET_DisplayCaret(CARET_ON);
CARET_SetTimer();
}
return TRUE;
}
/*****************************************************************
* HideCaret (USER32.@)
*/
BOOL WINAPI HideCaret( HWND hwnd )
{
if (!Caret.hwnd) return FALSE;
if (hwnd && (Caret.hwnd != WIN_GetFullHandle(hwnd))) return FALSE;
TRACE("hwnd=%04x, hidden=%d\n",
hwnd, Caret.hidden);
CARET_KillTimer();
CARET_DisplayCaret(CARET_OFF);
Caret.hidden++;
return TRUE;
}
/*****************************************************************
* ShowCaret (USER32.@)
*/
BOOL WINAPI ShowCaret( HWND hwnd )
{
if (!Caret.hwnd) return FALSE;
if (hwnd && (Caret.hwnd != WIN_GetFullHandle(hwnd))) return FALSE;
TRACE("hwnd=%04x, hidden=%d\n",
hwnd, Caret.hidden);
if (Caret.hidden)
{
Caret.hidden--;
if (!Caret.hidden)
{
CARET_DisplayCaret(CARET_ON);
CARET_SetTimer();
}
}
return TRUE;
}
/*****************************************************************
* SetCaretBlinkTime (USER.168)
*/
void WINAPI SetCaretBlinkTime16( UINT16 msecs )
{
SetCaretBlinkTime( msecs );
}
/*****************************************************************
* SetCaretBlinkTime (USER32.@)
*/
BOOL WINAPI SetCaretBlinkTime( UINT msecs )
{
if (!Caret.hwnd) return FALSE;
TRACE("hwnd=%04x, msecs=%d\n",
Caret.hwnd, msecs);
Caret.timeout = msecs;
CARET_ResetTimer();
return TRUE;
}
/*****************************************************************
* GetCaretBlinkTime (USER.169)
*/
UINT16 WINAPI GetCaretBlinkTime16(void)
{
return (UINT16)GetCaretBlinkTime();
}
/*****************************************************************
* GetCaretBlinkTime (USER32.@)
*/
UINT WINAPI GetCaretBlinkTime(void)
{
return Caret.timeout;
}
/*****************************************************************
* GetCaretPos (USER.183)
*/
VOID WINAPI GetCaretPos16( LPPOINT16 pt )
{
if (!Caret.hwnd || !pt) return;
TRACE("hwnd=%04x, pt=%p, x=%d, y=%d\n",
Caret.hwnd, pt, Caret.x, Caret.y);
pt->x = (INT16)Caret.x;
pt->y = (INT16)Caret.y;
}
/*****************************************************************
* GetCaretPos (USER32.@)
*/
BOOL WINAPI GetCaretPos( LPPOINT pt )
{
if (!Caret.hwnd || !pt) return FALSE;
pt->x = Caret.x;
pt->y = Caret.y;
return TRUE;
}
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