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Sweden-Number/controls/desktop.c

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C
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/*
* Desktop window class.
*
* Copyright 1994 Alexandre Julliard
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "desktop.h"
#include "windef.h"
#include "wingdi.h"
#include "heap.h"
#include "user.h"
#include "win.h"
#include "wine/winuser16.h"
/***********************************************************************
* DESKTOP_LoadBitmap
*
* Load a bitmap from a file. Used by SetDeskWallPaper().
*/
static HBITMAP DESKTOP_LoadBitmap( HDC hdc, const char *filename )
{
BITMAPFILEHEADER *fileHeader;
BITMAPINFO *bitmapInfo;
HBITMAP hbitmap;
HFILE file;
LPSTR buffer;
LONG size;
/* Read all the file into memory */
if ((file = _lopen( filename, OF_READ )) == HFILE_ERROR)
{
UINT len = GetWindowsDirectoryA( NULL, 0 );
if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
len + strlen(filename) + 2 )))
return 0;
GetWindowsDirectoryA( buffer, len + 1 );
strcat( buffer, "\\" );
strcat( buffer, filename );
file = _lopen( buffer, OF_READ );
HeapFree( GetProcessHeap(), 0, buffer );
}
if (file == HFILE_ERROR) return 0;
size = _llseek( file, 0, 2 );
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
{
_lclose( file );
return 0;
}
_llseek( file, 0, 0 );
size = _lread( file, buffer, size );
_lclose( file );
fileHeader = (BITMAPFILEHEADER *)buffer;
bitmapInfo = (BITMAPINFO *)(buffer + sizeof(BITMAPFILEHEADER));
/* Check header content */
if ((fileHeader->bfType != 0x4d42) || (size < fileHeader->bfSize))
{
HeapFree( GetProcessHeap(), 0, buffer );
return 0;
}
hbitmap = CreateDIBitmap( hdc, &bitmapInfo->bmiHeader, CBM_INIT,
buffer + fileHeader->bfOffBits,
bitmapInfo, DIB_RGB_COLORS );
HeapFree( GetProcessHeap(), 0, buffer );
return hbitmap;
}
/***********************************************************************
* DESKTOP_DoEraseBkgnd
*
* Handle the WM_ERASEBKGND message.
*/
static LRESULT DESKTOP_DoEraseBkgnd( HWND hwnd, HDC hdc,
DESKTOP *desktopPtr )
{
RECT rect;
WND* Wnd = WIN_FindWndPtr( hwnd );
if (Wnd->hrgnUpdate > 1) DeleteObject( Wnd->hrgnUpdate );
Wnd->hrgnUpdate = 0;
WIN_ReleaseWndPtr(Wnd);
GetClientRect( hwnd, &rect );
/* Paint desktop pattern (only if wall paper does not cover everything) */
if (!desktopPtr->hbitmapWallPaper ||
(!desktopPtr->fTileWallPaper && ((desktopPtr->bitmapSize.cx < rect.right) ||
(desktopPtr->bitmapSize.cy < rect.bottom))))
{
/* Set colors in case pattern is a monochrome bitmap */
SetBkColor( hdc, RGB(0,0,0) );
SetTextColor( hdc, GetSysColor(COLOR_BACKGROUND) );
FillRect( hdc, &rect, desktopPtr->hbrushPattern );
}
/* Paint wall paper */
if (desktopPtr->hbitmapWallPaper)
{
INT x, y;
HDC hMemDC = CreateCompatibleDC( hdc );
SelectObject( hMemDC, desktopPtr->hbitmapWallPaper );
if (desktopPtr->fTileWallPaper)
{
for (y = 0; y < rect.bottom; y += desktopPtr->bitmapSize.cy)
for (x = 0; x < rect.right; x += desktopPtr->bitmapSize.cx)
BitBlt( hdc, x, y, desktopPtr->bitmapSize.cx,
desktopPtr->bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
}
else
{
x = (rect.left + rect.right - desktopPtr->bitmapSize.cx) / 2;
y = (rect.top + rect.bottom - desktopPtr->bitmapSize.cy) / 2;
if (x < 0) x = 0;
if (y < 0) y = 0;
BitBlt( hdc, x, y, desktopPtr->bitmapSize.cx,
desktopPtr->bitmapSize.cy, hMemDC, 0, 0, SRCCOPY );
}
DeleteDC( hMemDC );
}
return 1;
}
/***********************************************************************
* DesktopWndProc_locked
*
* Window procedure for the desktop window.
*/
static inline LRESULT WINAPI DesktopWndProc_locked( WND *wndPtr, UINT message,
WPARAM wParam, LPARAM lParam )
{
DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
HWND hwnd = wndPtr->hwndSelf;
/* Most messages are ignored (we DON'T call DefWindowProc) */
switch(message)
{
/* Warning: this message is sent directly by */
/* WIN_CreateDesktopWindow() and does not contain a valid lParam */
case WM_NCCREATE:
desktopPtr->hbrushPattern = 0;
desktopPtr->hbitmapWallPaper = 0;
SetDeskPattern();
SetDeskWallPaper( (LPSTR)-1 );
return 1;
case WM_ERASEBKGND:
if(!USER_Driver->pIsSingleWindow())
return 1;
return DESKTOP_DoEraseBkgnd( hwnd, (HDC)wParam, desktopPtr );
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) != SC_CLOSE)
return 0;
ExitWindows16( 0, 0 );
case WM_SETCURSOR:
return (LRESULT)SetCursor16( LoadCursor16( 0, IDC_ARROW16 ) );
}
return 0;
}
/***********************************************************************
* DesktopWndProc
*
* This is just a wrapper for the DesktopWndProc which does windows
* locking and unlocking.
*/
LRESULT WINAPI DesktopWndProc( HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
LRESULT retvalue = DesktopWndProc_locked(wndPtr,message,wParam,lParam);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* PaintDesktop (USER32.415)
*
*/
BOOL WINAPI PaintDesktop(HDC hdc)
{
BOOL retvalue;
HWND hwnd = GetDesktopWindow();
WND *wndPtr = WIN_FindWndPtr( hwnd );
DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
retvalue = DESKTOP_DoEraseBkgnd( hwnd, hdc, desktopPtr );
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* SetDeskPattern (USER.279)
*/
BOOL16 WINAPI SetDeskPattern(void)
{
char buffer[100];
GetProfileStringA( "desktop", "Pattern", "(None)", buffer, 100 );
return DESKTOP_SetPattern( buffer );
}
/***********************************************************************
* SetDeskWallPaper16 (USER.285)
*/
BOOL16 WINAPI SetDeskWallPaper16( LPCSTR filename )
{
return SetDeskWallPaper( filename );
}
/***********************************************************************
* SetDeskWallPaper32 (USER32.475)
*
* FIXME: is there a unicode version?
*/
BOOL WINAPI SetDeskWallPaper( LPCSTR filename )
{
HBITMAP hbitmap;
HDC hdc;
char buffer[256];
WND *wndPtr = WIN_GetDesktop();
DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
if (filename == (LPSTR)-1)
{
GetProfileStringA( "desktop", "WallPaper", "(None)", buffer, 256 );
filename = buffer;
}
hdc = GetDC( 0 );
hbitmap = DESKTOP_LoadBitmap( hdc, filename );
ReleaseDC( 0, hdc );
if (desktopPtr->hbitmapWallPaper) DeleteObject( desktopPtr->hbitmapWallPaper );
desktopPtr->hbitmapWallPaper = hbitmap;
desktopPtr->fTileWallPaper = GetProfileIntA( "desktop", "TileWallPaper", 0 );
if (hbitmap)
{
BITMAP bmp;
GetObjectA( hbitmap, sizeof(bmp), &bmp );
desktopPtr->bitmapSize.cx = (bmp.bmWidth != 0) ? bmp.bmWidth : 1;
desktopPtr->bitmapSize.cy = (bmp.bmHeight != 0) ? bmp.bmHeight : 1;
}
WIN_ReleaseDesktop();
return TRUE;
}
/***********************************************************************
* DESKTOP_SetPattern
*
* Set the desktop pattern.
*/
BOOL DESKTOP_SetPattern( LPCSTR pattern )
{
WND *wndPtr = WIN_GetDesktop();
DESKTOP *desktopPtr = (DESKTOP *)wndPtr->wExtra;
int pat[8];
if (desktopPtr->hbrushPattern) DeleteObject( desktopPtr->hbrushPattern );
memset( pat, 0, sizeof(pat) );
if (pattern && sscanf( pattern, " %d %d %d %d %d %d %d %d",
&pat[0], &pat[1], &pat[2], &pat[3],
&pat[4], &pat[5], &pat[6], &pat[7] ))
{
WORD pattern[8];
HBITMAP hbitmap;
int i;
for (i = 0; i < 8; i++) pattern[i] = pat[i] & 0xffff;
hbitmap = CreateBitmap( 8, 8, 1, 1, (LPSTR)pattern );
desktopPtr->hbrushPattern = CreatePatternBrush( hbitmap );
DeleteObject( hbitmap );
}
else desktopPtr->hbrushPattern = CreateSolidBrush( GetSysColor(COLOR_BACKGROUND) );
WIN_ReleaseDesktop();
return TRUE;
}
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