/*
* GDI device-independent bitmaps
*
* Copyright 1993,1994 Alexandre Julliard
*/
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "dc.h"
#include "bitmap.h"
#include "callback.h"
#include "palette.h"
#include "icon.h"
#include "stackframe.h"
#include "stddebug.h"
#include "color.h"
#include "debug.h"
/***********************************************************************
* DIB_GetImageWidthBytes
*
* Return the width of an X image in bytes
*/
int DIB_GetImageWidthBytes( int width, int depth )
{
int words;
switch(depth)
{
case 1: words = (width + 31) / 32; break;
case 4: words = (width + 7) / 8; break;
case 8: words = (width + 3) / 4; break;
case 15:
case 16: words = (width + 1) / 2; break;
case 24: words = width; break;
default:
fprintf(stderr, "DIB: unsupported depth %d.\n", depth );
exit(1);
}
return 4 * words;
}
/***********************************************************************
* DIB_BitmapInfoSize
*
* Return the size of the bitmap info structure.
*/
int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
{
int size = info->bmiHeader.biClrUsed;
if (!size && (info->bmiHeader.biBitCount != 24))
size = 1 << info->bmiHeader.biBitCount;
if (coloruse == DIB_RGB_COLORS)
size = info->bmiHeader.biSize + size * sizeof(RGBQUAD);
else
size = info->bmiHeader.biSize + size * sizeof(WORD);
return size;
}
/***********************************************************************
* DIB_DIBmpToImage
*
* Create an XImage pointing to the bitmap data.
*/
static XImage *DIB_DIBmpToImage( BITMAPINFOHEADER * bmp, void * bmpData )
{
extern void _XInitImageFuncPtrs( XImage* );
XImage * image;
image = XCreateImage(display, DefaultVisualOfScreen( screen ),
bmp->biBitCount, ZPixmap, 0, bmpData,
bmp->biWidth, bmp->biHeight, 32,
DIB_GetImageWidthBytes(bmp->biWidth,bmp->biBitCount));
if (!image) return 0;
image->byte_order = MSBFirst;
image->bitmap_bit_order = MSBFirst;
image->bitmap_unit = 16;
_XInitImageFuncPtrs(image);
return image;
}
/***********************************************************************
* DIB_SetImageBits_1
*
* SetDIBits for a 1-bit deep DIB.
*/
static void DIB_SetImageBits_1( WORD lines, BYTE *bits, WORD width,
int *colors, XImage *bmpImage )
{
WORD i, x;
BYTE pad, pix;
if (!(width & 31)) pad = 0;
else pad = ((32 - (width & 31)) + 7) / 8;
while (lines--)
{
for (i = width/8, x = 0; (i > 0); i--)
{
pix = *bits++;
XPutPixel( bmpImage, x++, lines, colors[pix >> 7] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 6) & 1] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 5) & 1] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 4) & 1] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 3) & 1] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 2) & 1] );
XPutPixel( bmpImage, x++, lines, colors[(pix >> 1) & 1] );
XPutPixel( bmpImage, x++, lines, colors[pix & 1] );
}
pix = *bits;
switch(width & 7)
{
case 7: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 6: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 5: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 4: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 3: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 2: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
case 1: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] );
}
bits += pad;
}
}
/***********************************************************************
* DIB_SetImageBits_4
*
* SetDIBits for a 4-bit deep DIB.
*/
static void DIB_SetImageBits_4( WORD lines, BYTE *bits, WORD width,
int *colors, XImage *bmpImage )
{
WORD i, x;
BYTE pad;
if (!(width & 7)) pad = 0;
else pad = ((8 - (width & 7)) + 1) / 2;
while (lines--)
{
for (i = width/2, x = 0; i > 0; i--)
{
BYTE pix = *bits++;
XPutPixel( bmpImage, x++, lines, colors[pix >> 4] );
XPutPixel( bmpImage, x++, lines, colors[pix & 0x0f] );
}
if (width & 1) XPutPixel( bmpImage, x, lines, colors[*bits >> 4] );
bits += pad;
}
}
#define check_xy(x,y) \
if (x > width) { \
x = 0; \
if (lines) \
lines--; \
}
/***********************************************************************
* DIB_SetImageBits_RLE4
*
* SetDIBits for a 4-bit deep compressed DIB.
*/
static void DIB_SetImageBits_RLE4( WORD lines, BYTE *bits, WORD width,
int *colors, XImage *bmpImage )
{
int x = 0, c, length;
BYTE *begin = bits;
lines--;
while ((INT)lines >= 0)
{
length = *bits++;
if (length) { /* encoded */
c = *bits++;
while (length--) {
XPutPixel(bmpImage, x++, lines, colors[c >> 4]);
check_xy(x, y);
if (length) {
length--;
XPutPixel(bmpImage, x++, lines, colors[c & 0xf]);
check_xy(x, y);
}
}
} else {
length = *bits++;
switch (length) {
case 0: /* eol */
x = 0;
lines--;
continue;
case 1: /* eopicture */
return;
case 2: /* delta */
x += *bits++;
lines -= *bits++;
continue;
default: /* absolute */
while (length--) {
c = *bits++;
XPutPixel(bmpImage, x++, lines, colors[c >> 4]);
check_xy(x, y);
if (length) {
length--;
XPutPixel(bmpImage, x++, lines, colors[c & 0xf]);
check_xy(x, y);
}
}
if ((bits - begin) & 1)
bits++;
}
}
}
}
/***********************************************************************
* DIB_SetImageBits_8
*
* SetDIBits for an 8-bit deep DIB.
*/
static void DIB_SetImageBits_8( WORD lines, BYTE *bits, WORD width,
int *colors, XImage *bmpImage )
{
WORD x;
BYTE pad = (4 - (width & 3)) & 3;
while (lines--)
{
for (x = 0; x < width; x++)
XPutPixel( bmpImage, x, lines, colors[*bits++] );
bits += pad;
}
}
/***********************************************************************
* DIB_SetImageBits_RLE8
*
* SetDIBits for an 8-bit deep compressed DIB.
*
* This function rewritten 941113 by James Youngman. WINE blew out when I
* first ran it because my desktop wallpaper is a (large) RLE8 bitmap.
*
* This was because the algorithm assumed that all RLE8 bitmaps end with the
* 'End of bitmap' escape code. This code is very much laxer in what it
* allows to end the expansion. Possibly too lax. See the note by
* case RleDelta. BTW, MS's documentation implies that a correct RLE8
* bitmap should end with RleEnd, but on the other hand, software exists
* that produces ones that don't and Windows 3.1 doesn't complain a bit
* about it.
*
* (No) apologies for my English spelling. [Emacs users: c-indent-level=4].
* James A. Youngman <mbcstjy@afs.man.ac.uk>
* [JAY]
*/
enum Rle8_EscapeCodes
{
/*
* Apologies for polluting your file's namespace...
*/
RleEol = 0, /* End of line */
RleEnd = 1, /* End of bitmap */
RleDelta = 2 /* Delta */
};
static void DIB_SetImageBits_RLE8(WORD lines,
BYTE *bits,
WORD width,
int *colors,
XImage *bmpImage)
{
int x; /* X-positon on each line. Increases. */
int line; /* Line #. Starts at lines-1, decreases */
BYTE *pIn = bits; /* Pointer to current position in bits */
BYTE length; /* The length pf a run */
BYTE color_index; /* index into colors[] as read from bits */
BYTE escape_code; /* See enum Rle8_EscapeCodes.*/
WORD color; /* value of colour[color_index] */
if (lines == 0) /* Let's hope this doesn't happen. */
return;
/*
* Note that the bitmap data is stored by Windows starting at the
* bottom line of the bitmap and going upwards. Within each line,
* the data is stored left-to-right. That's the reason why line
* goes from lines-1 to 0. [JAY]
*/
x = 0;
line = lines-1;
do
{
length = *pIn++;
/*
* If the length byte is not zero (which is the escape value),
* We have a run of length pixels all the same colour. The colour
* index is stored next.
*
* If the length byte is zero, we need to read the next byte to
* know what to do. [JAY]
*/
if (length != 0)
{
/*
* [Run-Length] Encoded mode
*/
color_index = (*pIn++); /* Get the colour index. */
color = colors[color_index];
while(length--)
XPutPixel(bmpImage, x++, line, color);
}
else
{
/*
* Escape codes (may be an absolute sequence though)
*/
escape_code = (*pIn++);
switch(escape_code)
{
case RleEol: /* =0, end of line */
{
x = 0;
line--;
break;
}
case RleEnd: /* =1, end of bitmap */
{
/*
* Not all RLE8 bitmaps end with this
* code. For example, Paint Shop Pro
* produces some that don't. That's (I think)
* what caused the previous implementation to
* fail. [JAY]
*/
line=0; /* Cause exit from do loop. */
}
case RleDelta: /* =2, a delta */
{
/*
* Note that deltaing to line 0
* will cause an exit from the loop,
* which may not be what is intended.
* The fact that there is a delta in the bits
* almost certainly implies that there is data
* to follow. You may feel that we should
* jump to the top of the loop to avoid exiting
* in this case.
*
* TODO: Decide what to do here in that case. [JAY]
*/
x += (*pIn++);
line -= (*pIn++);
if (line == 0)
{
dprintf_bitmap(stddeb,
"DIB_SetImageBits_RLE8(): "
"Delta to last line of bitmap "
"(wrongly?) causes loop exit\n");
}
break;
}
default: /* >2, switch to absolute mode */
{
/*
* Absolute Mode
*/
length = escape_code;
while(length--)
{
color_index = (*pIn++);
XPutPixel(bmpImage, x++, line,
colors[color_index]);
}
/*
* If you think for a moment you'll realise that the
* only time we could ever possibly read an odd
* number of bytes is when there is a 0x00 (escape),
* a value >0x02 (absolute mode) and then an odd-
* length run. Therefore this is the only place we
* need to worry about it. Everywhere else the
* bytes are always read in pairs. [JAY]
*/
if (escape_code & 1)
pIn++; /* Throw away the pad byte. */
break;
}
} /* switch (escape_code) : Escape sequence */
} /* process either an encoded sequence or an escape sequence */
/* We expect to come here more than once per line. */
} while (line > 0); /* Do this until the bitmap is filled */
/*
* Everybody comes here at the end.
* Check how we exited the loop and print a message if it's a bit odd.
* [JAY]
*/
if ( (*(pIn-2) != 0/*escape*/) || (*(pIn-1)!= RleEnd) )
{
dprintf_bitmap(stddeb, "DIB_SetImageBits_RLE8(): End-of-bitmap "
"without (strictly) proper escape code. Last two "
"bytes were: %02X %02X.\n",
(int)*(pIn-2),
(int)*(pIn-1));
}
}
/***********************************************************************
* DIB_SetImageBits_24
*
* SetDIBits for a 24-bit deep DIB.
*/
static void DIB_SetImageBits_24( WORD lines, BYTE *bits, WORD width,
DC *dc, XImage *bmpImage )
{
WORD x;
BYTE pad = (4 - ((width*3) & 3)) & 3;
while (lines--)
{
for (x = 0; x < width; x++, bits += 3)
{
XPutPixel( bmpImage, x, lines,
COLOR_ToPhysical( dc, RGB(bits[0],bits[1],bits[2]) ));
}
bits += pad;
}
}
/***********************************************************************
* DIB_SetImageBits
*
* Transfer the bits to an X image.
* Helper function for SetDIBits() and SetDIBitsToDevice().
*/
static int DIB_SetImageBits( DC *dc, WORD lines, WORD depth, LPSTR bits,
BITMAPINFO *info, WORD coloruse,
Drawable drawable, GC gc, int xSrc, int ySrc,
int xDest, int yDest, int width, int height )
{
int *colorMapping;
XImage *bmpImage;
int i, colors;
/* Build the color mapping table */
if (info->bmiHeader.biBitCount == 24) colorMapping = NULL;
else
{
colors = info->bmiHeader.biClrUsed;
if (!colors) colors = 1 << info->bmiHeader.biBitCount;
if (!(colorMapping = (int *)malloc( colors * sizeof(int) )))
return 0;
if (coloruse == DIB_RGB_COLORS)
{
RGBQUAD * rgbPtr = info->bmiColors;
for (i = 0; i < colors; i++, rgbPtr++)
colorMapping[i] = COLOR_ToPhysical( dc, RGB(rgbPtr->rgbRed,
rgbPtr->rgbGreen,
rgbPtr->rgbBlue) );
}
else
{
WORD * index = (WORD *)info->bmiColors;
for (i = 0; i < colors; i++, index++)
colorMapping[i] = COLOR_ToPhysical( dc, PALETTEINDEX(*index) );
}
}
/* Transfer the pixels */
XCREATEIMAGE(bmpImage, info->bmiHeader.biWidth, lines, depth );
switch(info->bmiHeader.biBitCount)
{
case 1:
DIB_SetImageBits_1( lines, bits, info->bmiHeader.biWidth,
colorMapping, bmpImage );
break;
case 4:
if (info->bmiHeader.biCompression)
DIB_SetImageBits_RLE4( lines, bits, info->bmiHeader.biWidth,
colorMapping, bmpImage );
else
DIB_SetImageBits_4( lines, bits, info->bmiHeader.biWidth,
colorMapping, bmpImage );
break;
case 8:
if (info->bmiHeader.biCompression)
DIB_SetImageBits_RLE8( lines, bits, info->bmiHeader.biWidth,
colorMapping, bmpImage );
else
DIB_SetImageBits_8( lines, bits, info->bmiHeader.biWidth,
colorMapping, bmpImage );
break;
case 24:
DIB_SetImageBits_24( lines, bits, info->bmiHeader.biWidth,
dc, bmpImage );
break;
}
if (colorMapping) free(colorMapping);
{
WORD saved_ds = CURRENT_DS;
XPutImage( display, drawable, gc, bmpImage, xSrc, ySrc,
xDest, yDest, width, height );
if (saved_ds != CURRENT_DS) {
fprintf(stderr,"Uh oh. XPutImage clobbered the 16 bit stack.\n"
"Please report: %s compression, %d bitplanes!!\n",
info->bmiHeader.biCompression ? "" : "no",
info->bmiHeader.biBitCount);
}
}
XDestroyImage( bmpImage );
return lines;
}
/***********************************************************************
* StretchDIBits (GDI.439)
*/
int StretchDIBits( HDC hdc,
WORD xDest, WORD yDest, WORD wDestWidth, WORD wDestHeight,
WORD xSrc, WORD ySrc, WORD wSrcWidth, WORD wSrcHeight,
LPSTR bits, LPBITMAPINFO info, WORD wUsage, DWORD dwRop )
{
printf("StretchDIBits // call SetDIBitsToDevice for now !!!!\n");
return SetDIBitsToDevice(hdc, xDest, yDest, wDestWidth, wDestHeight,
xSrc, ySrc, 1, 1, bits, info, wUsage);
}
/***********************************************************************
* SetDIBits (GDI.440)
*/
int SetDIBits( HDC hdc, HBITMAP hbitmap, WORD startscan, WORD lines,
LPSTR bits, BITMAPINFO * info, WORD coloruse )
{
DC * dc;
BITMAPOBJ * bmp;
/* Check parameters */
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return 0;
if (!lines || (startscan >= (WORD)info->bmiHeader.biHeight)) return 0;
if (startscan+lines > info->bmiHeader.biHeight)
lines = info->bmiHeader.biHeight - startscan;
return CallTo32_LargeStack( (int(*)())DIB_SetImageBits, 14,
dc, lines, bmp->bitmap.bmBitsPixel,
bits, info, coloruse, bmp->pixmap,
BITMAP_GC(bmp), 0, 0, 0, startscan,
bmp->bitmap.bmWidth, lines );
}
/***********************************************************************
* SetDIBitsToDevice (GDI.443)
*/
int SetDIBitsToDevice( HDC hdc, short xDest, short yDest, WORD cx, WORD cy,
WORD xSrc, WORD ySrc, WORD startscan, WORD lines,
LPSTR bits, BITMAPINFO * info, WORD coloruse )
{
DC * dc;
/* Check parameters */
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!lines || (startscan >= info->bmiHeader.biHeight)) return 0;
if (startscan+lines > info->bmiHeader.biHeight)
lines = info->bmiHeader.biHeight - startscan;
if (ySrc < startscan) ySrc = startscan;
else if (ySrc >= startscan+lines) return 0;
if (xSrc >= info->bmiHeader.biWidth) return 0;
if (ySrc+cy >= startscan+lines) cy = startscan + lines - ySrc;
if (xSrc+cx >= info->bmiHeader.biWidth) cx = info->bmiHeader.biWidth-xSrc;
if (!cx || !cy) return 0;
DC_SetupGCForText( dc ); /* To have the correct colors */
XSetFunction( display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
return CallTo32_LargeStack( (int(*)())DIB_SetImageBits, 14,
dc, lines, dc->w.bitsPerPixel, bits, info,
coloruse, dc->u.x.drawable, dc->u.x.gc,
xSrc, ySrc - startscan,
dc->w.DCOrgX + XLPTODP( dc, xDest ),
dc->w.DCOrgY + YLPTODP( dc, yDest ),
cx, cy );
}
/***********************************************************************
* GetDIBits (GDI.441)
*/
int GetDIBits( HDC hdc, HBITMAP hbitmap, WORD startscan, WORD lines,
LPSTR bits, BITMAPINFO * info, WORD coloruse )
{
DC * dc;
BITMAPOBJ * bmp;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
XImage * bmpImage, * dibImage;
int i, x, y;
if (!lines) return 0;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return 0;
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
return 0;
/* Transfer color info */
palEntry = palette->logpalette.palPalEntry;
for (i = 0; i < info->bmiHeader.biClrUsed; i++, palEntry++)
{
if (coloruse == DIB_RGB_COLORS)
{
info->bmiColors[i].rgbRed = palEntry->peRed;
info->bmiColors[i].rgbGreen = palEntry->peGreen;
info->bmiColors[i].rgbBlue = palEntry->peBlue;
info->bmiColors[i].rgbReserved = 0;
}
else ((WORD *)info->bmiColors)[i] = (WORD)i;
}
/* Transfer the pixels (very slow...) */
if (bits)
{
bmpImage = XGetImage( display, bmp->pixmap, 0, 0, bmp->bitmap.bmWidth,
bmp->bitmap.bmHeight, AllPlanes, ZPixmap );
dibImage = DIB_DIBmpToImage( &info->bmiHeader, bits );
for (y = 0; y < lines; y++)
{
for (x = 0; x < info->bmiHeader.biWidth; x++)
{
XPutPixel( dibImage, x, y,
XGetPixel(bmpImage, x, bmp->bitmap.bmHeight-startscan-y-1) );
}
}
dibImage->data = NULL;
XDestroyImage( dibImage );
XDestroyImage( bmpImage );
}
return lines;
}
/***********************************************************************
* CreateDIBitmap (GDI.442)
*/
HBITMAP CreateDIBitmap( HDC hdc, BITMAPINFOHEADER * header, DWORD init,
LPSTR bits, BITMAPINFO * data, WORD coloruse )
{
HBITMAP handle;
handle = CreateCompatibleBitmap( hdc, header->biWidth, header->biHeight );
/* handle = CreateBitmap( header->biWidth, header->biHeight,
1, header->biBitCount, NULL );
*/
if (!handle) return 0;
if (init == CBM_INIT) SetDIBits( hdc, handle, 0, header->biHeight,
bits, data, coloruse );
return handle;
}
/***********************************************************************
* DrawIcon (USER.84)
*/
BOOL DrawIcon(HDC hDC, short x, short y, HICON hIcon)
{
ICONALLOC *lpico;
BITMAP bm;
HBITMAP hBitTemp;
HDC hMemDC;
COLORREF oldFg, oldBg;
oldFg = SetTextColor( hDC, RGB(0,0,0) );
oldBg = SetBkColor( hDC, RGB(255,255,255) );
dprintf_icon(stddeb,"DrawIcon(%04X, %d, %d, %04X) \n", hDC, x, y, hIcon);
if (hIcon == (HICON)NULL) return FALSE;
lpico = (ICONALLOC *)GlobalLock(hIcon);
GetObject(lpico->hBitmap, sizeof(BITMAP), (LPSTR)&bm);
hMemDC = CreateCompatibleDC(hDC);
if (lpico->hBitMask)
{
hBitTemp = SelectObject(hMemDC, lpico->hBitMask);
BitBlt(hDC, x, y, bm.bmWidth, bm.bmHeight, hMemDC, 0, 0, SRCAND);
SelectObject(hMemDC, lpico->hBitmap);
BitBlt(hDC, x, y, bm.bmWidth, bm.bmHeight, hMemDC, 0, 0, SRCINVERT);
}
else /* no mask -> everything is masked; so use SRCCOPY as it's faster */
{
hBitTemp = SelectObject(hMemDC, lpico->hBitmap);
BitBlt(hDC, x, y, bm.bmWidth, bm.bmHeight, hMemDC, 0, 0, SRCCOPY);
}
SelectObject( hMemDC, hBitTemp );
DeleteDC(hMemDC);
GlobalUnlock( hIcon );
SetTextColor( hDC, oldFg );
SetBkColor( hDC, oldBg );
return TRUE;
}