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/*
* GDI device-independent bitmaps
*
* Copyright 1993,1994 Alexandre Julliard
*/
#include <stdlib.h>
#include "ts_xlib.h"
#include "ts_xutil.h"
#include "dc.h"
#include "bitmap.h"
#include "callback.h"
#include "palette.h"
#include "color.h"
#include "global.h"
#include "debug.h"
static int bitmapDepthTable[] = { 8, 1, 32, 16, 24, 15, 4, 0 };
static int ximageDepthTable[] = { 0, 0, 0, 0, 0, 0, 0 };
/* This structure holds the arguments for DIB_SetImageBits() */
typedef struct
{
DC *dc;
LPCVOID bits;
XImage *image;
int lines;
DWORD infoWidth;
WORD depth;
WORD infoBpp;
WORD compression;
int *colorMap;
int nColorMap;
Drawable drawable;
GC gc;
int xSrc;
int ySrc;
int xDest;
int yDest;
int width;
int height;
} DIB_SETIMAGEBITS_DESCR;
/***********************************************************************
* DIB_Init
*/
BOOL32 DIB_Init(void)
{
int i;
XImage* testimage;
for( i = 0; bitmapDepthTable[i]; i++ )
{
testimage = TSXCreateImage(display, DefaultVisualOfScreen(screen),
bitmapDepthTable[i], ZPixmap, 0, NULL, 1, 1, 32, 20 );
if( testimage ) ximageDepthTable[i] = testimage->bits_per_pixel;
else return FALSE;
TSXDestroyImage(testimage);
}
return TRUE;
}
/***********************************************************************
* DIB_GetXImageWidthBytes
*
* Return the width of an X image in bytes
*/
int DIB_GetXImageWidthBytes( int width, int depth )
{
int i;
if (!ximageDepthTable[0]) {
DIB_Init();
}
for( i = 0; bitmapDepthTable[i] ; i++ )
if( bitmapDepthTable[i] == depth )
return (4 * ((width * ximageDepthTable[i] + 31)/32));
WARN(bitmap, "(%d): Unsupported depth\n", depth );
return (4 * width);
}
/***********************************************************************
* DIB_GetDIBWidthBytes
*
* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
*/
int DIB_GetDIBWidthBytes( 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 * 3 + 3)/4; break;
default:
WARN(bitmap, "(%d): Unsupported depth\n", depth );
/* fall through */
case 32:
words = width;
}
return 4 * words;
}
/***********************************************************************
* DIB_BitmapInfoSize
*
* Return the size of the bitmap info structure including color table.
*/
int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
{
int colors;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
return sizeof(BITMAPCOREHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
}
else /* assume BITMAPINFOHEADER */
{
colors = info->bmiHeader.biClrUsed;
if (!colors && (info->bmiHeader.biBitCount <= 8))
colors = 1 << info->bmiHeader.biBitCount;
return sizeof(BITMAPINFOHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
}
}
/***********************************************************************
* DIB_GetBitmapInfo
*
* Get the info from a bitmap header.
* Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
*/
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
int *height, WORD *bpp, WORD *compr )
{
if (header->biSize == sizeof(BITMAPINFOHEADER))
{
*width = header->biWidth;
*height = header->biHeight;
*bpp = header->biBitCount;
*compr = header->biCompression;
return 1;
}
if (header->biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
*width = core->bcWidth;
*height = core->bcHeight;
*bpp = core->bcBitCount;
*compr = 0;
return 0;
}
WARN(bitmap, "(%ld): wrong size for header\n", header->biSize );
return -1;
}
/***********************************************************************
* DIB_BuildColorMap
*
* Build the color map from the bitmap palette. Should not be called
* for a >8-bit deep bitmap.
*/
static int *DIB_BuildColorMap( DC *dc, WORD coloruse, WORD depth,
const BITMAPINFO *info, int *nColors )
{
int i, colors;
BOOL32 isInfo;
WORD *colorPtr;
int *colorMapping;
if ((isInfo = (info->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))))
{
colors = info->bmiHeader.biClrUsed;
if (!colors) colors = 1 << info->bmiHeader.biBitCount;
colorPtr = (WORD *)info->bmiColors;
}
else /* assume BITMAPCOREINFO */
{
colors = 1 << ((BITMAPCOREHEADER *)&info->bmiHeader)->bcBitCount;
colorPtr = (WORD *)((BITMAPCOREINFO *)info)->bmciColors;
}
if (colors > 256)
{
ERR(bitmap, "DIB_BuildColorMap called with >256 colors!\n");
return NULL;
}
if (!(colorMapping = (int *)HeapAlloc(GetProcessHeap(), 0,
colors * sizeof(int) )))
return NULL;
if (coloruse == DIB_RGB_COLORS)
{
if (isInfo)
{
RGBQUAD * rgb = (RGBQUAD *)colorPtr;
if (depth == 1) /* Monochrome */
for (i = 0; i < colors; i++, rgb++)
colorMapping[i] = (rgb->rgbRed + rgb->rgbGreen +
rgb->rgbBlue > 255*3/2);
else
for (i = 0; i < colors; i++, rgb++)
colorMapping[i] = COLOR_ToPhysical( dc, RGB(rgb->rgbRed,
rgb->rgbGreen,
rgb->rgbBlue));
}
else
{
RGBTRIPLE * rgb = (RGBTRIPLE *)colorPtr;
if (depth == 1) /* Monochrome */
for (i = 0; i < colors; i++, rgb++)
colorMapping[i] = (rgb->rgbtRed + rgb->rgbtGreen +
rgb->rgbtBlue > 255*3/2);
else
for (i = 0; i < colors; i++, rgb++)
colorMapping[i] = COLOR_ToPhysical( dc, RGB(rgb->rgbtRed,
rgb->rgbtGreen,
rgb->rgbtBlue));
}
}
else /* DIB_PAL_COLORS */
{
for (i = 0; i < colors; i++, colorPtr++)
colorMapping[i] = COLOR_ToPhysical( dc, PALETTEINDEX(*colorPtr) );
}
*nColors = colors;
return colorMapping;
}
/***********************************************************************
* DIB_MapColor
*/
static int DIB_MapColor( int *physMap, int nPhysMap, int phys )
{
int color;
for (color = 0; color < nPhysMap; color++)
if (physMap[color] == phys)
return color;
WARN(bitmap, "Strange color %08x\n", phys);
return 0;
}
/***********************************************************************
* DIB_SetImageBits_1_Line
*
* Handles a single line of 1 bit data.
*/
static void DIB_SetImageBits_1_Line(DWORD dstwidth, int left, int *colors,
XImage *bmpImage, int h, const BYTE *bits)
{
BYTE pix;
DWORD i, x;
dstwidth += left; bits += left >> 3;
/* FIXME: should avoid putting x<left pixels (minor speed issue) */
for (i = dstwidth/8, x = left&~7; (i > 0); i--)
{
pix = *bits++;
XPutPixel( bmpImage, x++, h, colors[pix >> 7] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 6) & 1] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 5) & 1] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 4) & 1] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 3) & 1] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 2) & 1] );
XPutPixel( bmpImage, x++, h, colors[(pix >> 1) & 1] );
XPutPixel( bmpImage, x++, h, colors[pix & 1] );
}
pix = *bits;
switch(dstwidth & 7)
{
case 7: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 6: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 5: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 4: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 3: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 2: XPutPixel( bmpImage, x++, h, colors[pix >> 7] ); pix <<= 1;
case 1: XPutPixel( bmpImage, x++, h, colors[pix >> 7] );
}
}
/***********************************************************************
* DIB_SetImageBits_1
*
* SetDIBits for a 1-bit deep DIB.
*/
static void DIB_SetImageBits_1( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
int *colors, XImage *bmpImage )
{
int h;
/* 32 bit aligned */
DWORD linebytes = ((srcwidth + 31) & ~31) / 8;
if (lines > 0) {
for (h = lines-1; h >=0; h--) {
DIB_SetImageBits_1_Line(dstwidth, left, colors, bmpImage, h, srcbits);
srcbits += linebytes;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
DIB_SetImageBits_1_Line(dstwidth, left, colors, bmpImage, h, srcbits);
srcbits += linebytes;
}
}
}
/***********************************************************************
* DIB_SetImageBits_4
*
* SetDIBits for a 4-bit deep DIB.
*/
static void DIB_SetImageBits_4( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
int *colors, XImage *bmpImage )
{
DWORD i, x;
int h;
const BYTE *bits = srcbits + (left >> 1);
/* 32 bit aligned */
DWORD linebytes = ((srcwidth+7)&~7)/2;
dstwidth += left;
/* FIXME: should avoid putting x<left pixels (minor speed issue) */
if (lines > 0) {
for (h = lines-1; h >= 0; h--) {
for (i = dstwidth/2, x = left&~1; i > 0; i--) {
BYTE pix = *bits++;
XPutPixel( bmpImage, x++, h, colors[pix >> 4] );
XPutPixel( bmpImage, x++, h, colors[pix & 0x0f] );
}
if (dstwidth & 1) XPutPixel( bmpImage, x, h, colors[*bits >> 4] );
srcbits += linebytes;
bits = srcbits + (left >> 1);
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (i = dstwidth/2, x = left&~1; i > 0; i--) {
BYTE pix = *bits++;
XPutPixel( bmpImage, x++, h, colors[pix >> 4] );
XPutPixel( bmpImage, x++, h, colors[pix & 0x0f] );
}
if (dstwidth & 1) XPutPixel( bmpImage, x, h, colors[*bits >> 4] );
srcbits += linebytes;
bits = srcbits + (left >> 1);
}
}
}
/***********************************************************************
* DIB_GetImageBits_4
*
* GetDIBits for a 4-bit deep DIB.
*/
static void DIB_GetImageBits_4( int lines, BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
int *colors, int nColors, XImage *bmpImage )
{
DWORD i, x;
int h;
BYTE *bits = srcbits + (left >> 1);
/* 32 bit aligned */
DWORD linebytes = ((srcwidth+7)&~7)/2;
dstwidth += left;
/* FIXME: should avoid putting x<left pixels (minor speed issue) */
if (lines > 0) {
for (h = lines-1; h >= 0; h--) {
for (i = dstwidth/2, x = left&~1; i > 0; i--) {
*bits++ = (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) << 4)
| (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) & 0x0f);
}
if (dstwidth & 1)
*bits = (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) << 4);
srcbits += linebytes;
bits = srcbits + (left >> 1);
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (i = dstwidth/2, x = left&~1; i > 0; i--) {
*bits++ = (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) << 4)
| (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) & 0x0f);
}
if (dstwidth & 1)
*bits = (DIB_MapColor( colors, nColors, XGetPixel( bmpImage, x++, h )) << 4);
srcbits += linebytes;
bits = srcbits + (left >> 1);
}
}
}
#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( int lines, const BYTE *bits, DWORD width,
DWORD dstwidth, int left, int *colors, XImage *bmpImage )
{
int x = 0, c, length;
const BYTE *begin = bits;
dstwidth += left; /* FIXME: avoid putting x<left pixels */
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( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
int *colors, XImage *bmpImage )
{
DWORD x;
int h;
const BYTE *bits = srcbits + left;
/* align to 32 bit */
DWORD linebytes = (srcwidth + 3) & ~3;
dstwidth+=left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits++) {
XPutPixel( bmpImage, x, h, colors[*bits] );
}
bits = (srcbits += linebytes) + left;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits++) {
XPutPixel( bmpImage, x, h, colors[*bits] );
}
bits = (srcbits += linebytes) + left;
}
}
}
/***********************************************************************
* DIB_GetImageBits_8
*
* GetDIBits for an 8-bit deep DIB.
*/
static void DIB_GetImageBits_8( int lines, BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
int *colors, int nColors, XImage *bmpImage )
{
DWORD x;
int h;
BYTE *bits = srcbits + left;
/* align to 32 bit */
DWORD linebytes = (srcwidth + 3) & ~3;
dstwidth+=left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits++) {
if ( XGetPixel( bmpImage, x, h ) != colors[*bits] )
*bits = DIB_MapColor( colors, nColors,
XGetPixel( bmpImage, x, h ) );
}
bits = (srcbits += linebytes) + left;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits++) {
if ( XGetPixel( bmpImage, x, h ) != colors[*bits] )
*bits = DIB_MapColor( colors, nColors,
XGetPixel( bmpImage, x, h ) );
}
bits = (srcbits += linebytes) + left;
}
}
}
/***********************************************************************
* 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( int lines, const BYTE *bits, DWORD width,
DWORD dstwidth, int left, int *colors, XImage *bmpImage )
{
int x; /* X-positon on each line. Increases. */
int line; /* Line #. Starts at lines-1, decreases */
const 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;
dstwidth += left; /* FIXME: avoid putting x<left pixels */
/*
* 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=-1; /* Cause exit from do loop. */
break;
}
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)
{
TRACE(bitmap, "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) )
{
TRACE(bitmap, "End-of-bitmap "
"without (strictly) proper escape code. Last two "
"bytes were: %02X %02X.\n",
(int)*(pIn-2),
(int)*(pIn-1));
}
}
/***********************************************************************
* DIB_SetImageBits_16
*
* SetDIBits for a 16-bit deep DIB.
*/
static void DIB_SetImageBits_16( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
DC *dc, XImage *bmpImage )
{
DWORD x;
LPWORD ptr;
WORD val;
int h;
BYTE r, g, b;
/* align to 32 bit */
DWORD linebytes = (srcwidth * 2 + 3) & ~3;
dstwidth += left;
ptr = (LPWORD) srcbits + left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, ptr++) {
val = *ptr;
r = (BYTE) ((val & 0x7c00) >> 7);
g = (BYTE) ((val & 0x03e0) >> 2);
b = (BYTE) ((val & 0x001f) << 3);
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(r,g,b)) );
}
ptr = (LPWORD) (srcbits += linebytes) + left;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, ptr++) {
val = *ptr;
r = (BYTE) ((val & 0x7c00) >> 7);
g = (BYTE) ((val & 0x03e0) >> 2);
b = (BYTE) ((val & 0x001f) << 3);
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(r,g,b)) );
}
ptr = (LPWORD) (srcbits += linebytes) + left;
}
}
}
/***********************************************************************
* DIB_GetImageBits_16
*
* GetDIBits for an 16-bit deep DIB.
*/
static void DIB_GetImageBits_16( int lines, BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
XImage *bmpImage )
{
DWORD x;
LPWORD ptr;
int h;
BYTE r, g, b;
/* align to 32 bit */
DWORD linebytes = (srcwidth * 2 + 3) & ~3;
dstwidth += left;
ptr = (LPWORD) srcbits + left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--)
{
for (x = left; x < dstwidth; x++, ptr++)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
r = (BYTE) GetRValue(pixel);
g = (BYTE) GetGValue(pixel);
b = (BYTE) GetBValue(pixel);
*ptr = ( ((r << 7) & 0x7c00) | ((g << 2) & 0x03e0) | ((b >> 3) & 0x001f) );
}
ptr = (LPWORD) (srcbits += linebytes) + left;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++)
{
for (x = left; x < dstwidth; x++, ptr++)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
r = (BYTE) GetRValue(pixel);
g = (BYTE) GetGValue(pixel);
b = (BYTE) GetBValue(pixel);
*ptr = ( ((r << 7) & 0x7c00) | ((g << 2) & 0x03e0) | ((b >> 3) & 0x001f) );
}
ptr = (LPWORD) (srcbits += linebytes) + left;
}
}
}
/***********************************************************************
* DIB_SetImageBits_24
*
* SetDIBits for a 24-bit deep DIB.
*/
static void DIB_SetImageBits_24( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
DC *dc, XImage *bmpImage )
{
DWORD x;
const BYTE *bits = srcbits + left * 3;
int h;
/* align to 32 bit */
DWORD linebytes = (srcwidth * 3 + 3) & ~3;
dstwidth += left;
/* "bits" order is reversed for some reason */
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 3) {
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(bits[2],bits[1],bits[0])));
}
bits = (srcbits += linebytes) + left * 3;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 3) {
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(bits[2],bits[1],bits[0])));
}
bits = (srcbits += linebytes) + left * 3;
}
}
}
/***********************************************************************
* DIB_GetImageBits_24
*
* GetDIBits for an 24-bit deep DIB.
*/
static void DIB_GetImageBits_24( int lines, BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
XImage *bmpImage )
{
DWORD x;
int h;
BYTE *bits = srcbits + (left * 3);
/* align to 32 bit */
DWORD linebytes = (srcwidth * 3 + 3) & ~3;
dstwidth += left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--)
{
for (x = left; x < dstwidth; x++, bits += 3)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
bits[0] = GetRValue(pixel);
bits[1] = GetGValue(pixel);
bits[2] = GetBValue(pixel);
}
bits = (srcbits += linebytes) + (left * 3);
}
} else {
lines = -lines;
for (h = 0; h < lines; h++)
{
for (x = left; x < dstwidth; x++, bits += 3)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
bits[0] = GetRValue(pixel);
bits[1] = GetGValue(pixel);
bits[2] = GetBValue(pixel);
}
bits = (srcbits += linebytes) + (left * 3);
}
}
}
/***********************************************************************
* DIB_SetImageBits_32
*
* SetDIBits for a 32-bit deep DIB.
*/
static void DIB_SetImageBits_32( int lines, const BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
DC *dc, XImage *bmpImage )
{
DWORD x;
const BYTE *bits = srcbits + left * 4;
int h;
DWORD linebytes = (srcwidth * 4);
dstwidth += left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 4) {
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(bits[2],bits[1],bits[0])));
}
bits = (srcbits += linebytes) + left * 4;
}
} else {
lines = -lines;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 4) {
XPutPixel( bmpImage, x, h,
COLOR_ToPhysical(dc, RGB(bits[2],bits[1],bits[0])));
}
bits = (srcbits += linebytes) + left * 4;
}
}
}
/***********************************************************************
* DIB_GetImageBits_32
*
* GetDIBits for an 32-bit deep DIB.
*/
static void DIB_GetImageBits_32( int lines, BYTE *srcbits,
DWORD srcwidth, DWORD dstwidth, int left,
XImage *bmpImage )
{
DWORD x;
int h;
BYTE *bits = srcbits + (left * 4);
/* align to 32 bit */
DWORD linebytes = (srcwidth * 4);
dstwidth += left;
if (lines > 0) {
for (h = lines - 1; h >= 0; h--)
{
for (x = left; x < dstwidth; x++, bits += 4)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
bits[0] = GetRValue(pixel);
bits[1] = GetGValue(pixel);
bits[2] = GetBValue(pixel);
}
bits = (srcbits += linebytes) + (left * 4);
}
} else {
lines = -lines;
for (h = 0; h < lines; h++)
{
for (x = left; x < dstwidth; x++, bits += 4)
{
COLORREF pixel = COLOR_ToLogical( XGetPixel( bmpImage, x, h ) );
bits[0] = GetRValue(pixel);
bits[1] = GetGValue(pixel);
bits[2] = GetBValue(pixel);
}
bits = (srcbits += linebytes) + (left * 4);
}
}
}
/***********************************************************************
* DIB_SetImageBits
*
* Transfer the bits to an X image.
* Helper function for SetDIBits() and SetDIBitsToDevice().
* The Xlib critical section must be entered before calling this function.
*/
static int DIB_SetImageBits( const DIB_SETIMAGEBITS_DESCR *descr )
{
int lines = descr->lines >= 0 ? descr->lines : -descr->lines;
XImage *bmpImage;
if ( descr->dc && descr->dc->w.flags & DC_DIRTY )
CLIPPING_UpdateGCRegion( descr->dc );
if (descr->image)
bmpImage = descr->image;
else
XCREATEIMAGE( bmpImage, descr->infoWidth, lines, descr->depth );
/* Transfer the pixels */
switch(descr->infoBpp)
{
case 1:
DIB_SetImageBits_1( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->colorMap, bmpImage );
break;
case 4:
if (descr->compression) DIB_SetImageBits_RLE4( descr->lines, descr->bits,
descr->infoWidth, descr->width, descr->xSrc,
descr->colorMap, bmpImage );
else DIB_SetImageBits_4( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->colorMap, bmpImage );
break;
case 8:
if (descr->compression) DIB_SetImageBits_RLE8( descr->lines, descr->bits,
descr->infoWidth, descr->width, descr->xSrc,
descr->colorMap, bmpImage );
else DIB_SetImageBits_8( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->colorMap, bmpImage );
break;
case 15:
case 16:
DIB_SetImageBits_16( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->dc, bmpImage);
break;
case 24:
DIB_SetImageBits_24( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->dc, bmpImage );
break;
case 32:
DIB_SetImageBits_32( descr->lines, descr->bits, descr->infoWidth,
descr->width, descr->xSrc, descr->dc, bmpImage);
break;
default:
WARN(bitmap, "(%d): Invalid depth\n", descr->infoBpp );
break;
}
XPutImage( display, descr->drawable, descr->gc, bmpImage,
descr->xSrc, descr->ySrc, descr->xDest, descr->yDest,
descr->width, descr->height );
if (!descr->image) XDestroyImage( bmpImage );
return lines;
}
/***********************************************************************
* DIB_GetImageBits
*
* Transfer the bits from an X image.
* The Xlib critical section must be entered before calling this function.
*/
static int DIB_GetImageBits( const DIB_SETIMAGEBITS_DESCR *descr )
{
int lines = descr->lines >= 0 ? descr->lines : -descr->lines;
XImage *bmpImage;
if (descr->image)
bmpImage = descr->image;
else
XCREATEIMAGE( bmpImage, descr->infoWidth, lines, descr->depth );
XGetSubImage( display, descr->drawable, descr->xDest, descr->yDest,
descr->width, descr->height, AllPlanes, ZPixmap,
bmpImage, descr->xSrc, descr->ySrc );
/* Transfer the pixels */
switch(descr->infoBpp)
{
case 1:
FIXME(bitmap, "Depth 1 not yet supported!\n");
break;
case 4:
if (descr->compression) FIXME(bitmap, "Compression not yet supported!\n");
else DIB_GetImageBits_4( descr->lines, (LPVOID)descr->bits, descr->infoWidth,
descr->width, descr->xSrc,
descr->colorMap, descr->nColorMap, bmpImage );
break;
case 8:
if (descr->compression) FIXME(bitmap, "Compression not yet supported!\n");
else DIB_GetImageBits_8( descr->lines, (LPVOID)descr->bits, descr->infoWidth,
descr->width, descr->xSrc,
descr->colorMap, descr->nColorMap, bmpImage );
break;
case 15:
case 16:
DIB_GetImageBits_16( descr->lines, (LPVOID)descr->bits, descr->infoWidth,
descr->width, descr->xSrc, bmpImage );
break;
case 24:
DIB_GetImageBits_24( descr->lines, (LPVOID)descr->bits, descr->infoWidth,
descr->width, descr->xSrc, bmpImage );
break;
case 32:
DIB_GetImageBits_32( descr->lines, (LPVOID)descr->bits, descr->infoWidth,
descr->width, descr->xSrc, bmpImage );
break;
default:
WARN(bitmap, "(%d): Invalid depth\n", descr->infoBpp );
break;
}
if (!descr->image) XDestroyImage( bmpImage );
return lines;
}
/***********************************************************************
* StretchDIBits16 (GDI.439)
*/
INT16 WINAPI StretchDIBits16(HDC16 hdc, INT16 xDst, INT16 yDst, INT16 widthDst,
INT16 heightDst, INT16 xSrc, INT16 ySrc, INT16 widthSrc,
INT16 heightSrc, const VOID *bits,
const BITMAPINFO *info, UINT16 wUsage, DWORD dwRop )
{
return (INT16)StretchDIBits32( hdc, xDst, yDst, widthDst, heightDst,
xSrc, ySrc, widthSrc, heightSrc, bits,
info, wUsage, dwRop );
}
/***********************************************************************
* StretchDIBits32 (GDI32.351)
*/
INT32 WINAPI StretchDIBits32(HDC32 hdc, INT32 xDst, INT32 yDst, INT32 widthDst,
INT32 heightDst, INT32 xSrc, INT32 ySrc, INT32 widthSrc,
INT32 heightSrc, const void *bits,
const BITMAPINFO *info, UINT32 wUsage, DWORD dwRop )
{
HBITMAP32 hBitmap, hOldBitmap;
HDC32 hdcMem;
hBitmap = CreateDIBitmap32( hdc, &info->bmiHeader, CBM_INIT,
bits, info, wUsage );
hdcMem = CreateCompatibleDC32( hdc );
hOldBitmap = SelectObject32( hdcMem, hBitmap );
StretchBlt32( hdc, xDst, yDst, widthDst, heightDst,
hdcMem, xSrc, ySrc, widthSrc, heightSrc, dwRop );
SelectObject32( hdcMem, hOldBitmap );
DeleteDC32( hdcMem );
DeleteObject32( hBitmap );
return heightSrc;
}
/***********************************************************************
* SetDIBits16 (GDI.440)
*/
INT16 WINAPI SetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
UINT16 coloruse )
{
return SetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
}
/******************************************************************************
* SetDIBits32 [GDI32.312] Sets pixels in a bitmap using colors from DIB
*
* PARAMS
* hdc [I] Handle to device context
* hbitmap [I] Handle to bitmap
* startscan [I] Starting scan line
* lines [I] Number of scan lines
* bits [I] Array of bitmap bits
* info [I] Address of structure with data
* coloruse [I] Type of color indexes to use
*
* RETURNS
* Success: Number of scan lines copied
* Failure: 0
*/
INT32 WINAPI SetDIBits32( HDC32 hdc, HBITMAP32 hbitmap, UINT32 startscan,
UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
UINT32 coloruse )
{
DIB_SETIMAGEBITS_DESCR descr;
BITMAPOBJ * bmp;
int height, tmpheight;
INT32 result;
/* Check parameters */
descr.dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!descr.dc)
{
descr.dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!descr.dc) return 0;
}
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
{
GDI_HEAP_UNLOCK( hdc );
return 0;
}
if (DIB_GetBitmapInfo( &info->bmiHeader, &descr.infoWidth, &height,
&descr.infoBpp, &descr.compression ) == -1)
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
tmpheight = height;
if (height < 0) height = -height;
if (!lines || (startscan >= height))
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
if (startscan + lines > height) lines = height - startscan;
if (descr.infoBpp <= 8)
{
descr.colorMap = DIB_BuildColorMap( descr.dc, coloruse, bmp->bitmap.bmBitsPixel,
info, &descr.nColorMap );
if (!descr.colorMap)
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
}
descr.bits = bits;
descr.image = NULL;
descr.lines = tmpheight >= 0 ? lines : -lines;
descr.depth = bmp->bitmap.bmBitsPixel;
descr.drawable = bmp->pixmap;
descr.gc = BITMAP_GC(bmp);
descr.xSrc = 0;
descr.ySrc = 0;
descr.xDest = 0;
descr.yDest = height - startscan - lines;
descr.width = bmp->bitmap.bmWidth;
descr.height = lines;
EnterCriticalSection( &X11DRV_CritSection );
result = CALL_LARGE_STACK( DIB_SetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
HeapFree(GetProcessHeap(), 0, descr.colorMap);
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hbitmap );
return result;
}
/***********************************************************************
* SetDIBitsToDevice16 (GDI.443)
*/
INT16 WINAPI SetDIBitsToDevice16(HDC16 hdc, INT16 xDest, INT16 yDest, INT16 cx,
INT16 cy, INT16 xSrc, INT16 ySrc, UINT16 startscan,
UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
UINT16 coloruse )
{
return SetDIBitsToDevice32( hdc, xDest, yDest, cx, cy, xSrc, ySrc,
startscan, lines, bits, info, coloruse );
}
/***********************************************************************
* SetDIBitsToDevice32 (GDI32.313)
*/
INT32 WINAPI SetDIBitsToDevice32(HDC32 hdc, INT32 xDest, INT32 yDest, DWORD cx,
DWORD cy, INT32 xSrc, INT32 ySrc, UINT32 startscan,
UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
UINT32 coloruse )
{
DIB_SETIMAGEBITS_DESCR descr;
DC * dc;
DWORD width, oldcy = cy;
INT32 result;
int height, tmpheight;
/* Check parameters */
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (DIB_GetBitmapInfo( &info->bmiHeader, &width, &height,
&descr.infoBpp, &descr.compression ) == -1)
return 0;
tmpheight = height;
if (height < 0) height = -height;
if (!lines || (startscan >= height)) return 0;
if (startscan + lines > height) lines = height - startscan;
if (ySrc < startscan) ySrc = startscan;
else if (ySrc >= startscan + lines) return 0;
if (xSrc >= width) return 0;
if (ySrc + cy >= startscan + lines) cy = startscan + lines - ySrc;
if (xSrc + cx >= width) cx = width - xSrc;
if (!cx || !cy) return 0;
DC_SetupGCForText( dc ); /* To have the correct colors */
TSXSetFunction( display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
if (descr.infoBpp <= 8)
{
descr.colorMap = DIB_BuildColorMap( dc, coloruse, dc->w.bitsPerPixel,
info, &descr.nColorMap );
if (!descr.colorMap)
return 0;
}
descr.dc = dc;
descr.bits = bits;
descr.image = NULL;
descr.lines = tmpheight >= 0 ? lines : -lines;
descr.infoWidth = width;
descr.depth = dc->w.bitsPerPixel;
descr.drawable = dc->u.x.drawable;
descr.gc = dc->u.x.gc;
descr.xSrc = xSrc;
descr.ySrc = tmpheight >= 0 ? lines-(ySrc-startscan)-cy+(oldcy-cy) : ySrc - startscan;
descr.xDest = dc->w.DCOrgX + XLPTODP( dc, xDest );
descr.yDest = dc->w.DCOrgY + YLPTODP( dc, yDest ) + (tmpheight >= 0 ? oldcy-cy : 0);
descr.width = cx;
descr.height = cy;
EnterCriticalSection( &X11DRV_CritSection );
result = CALL_LARGE_STACK( DIB_SetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
HeapFree(GetProcessHeap(), 0, descr.colorMap);
return result;
}
/***********************************************************************
* SetDIBColorTable16 (GDI.602)
*/
UINT16 WINAPI SetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
RGBQUAD *colors )
{
return SetDIBColorTable32( hdc, startpos, entries, colors );
}
/***********************************************************************
* SetDIBColorTable32 (GDI32.311)
*/
UINT32 WINAPI SetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
RGBQUAD *colors )
{
DC * dc;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
RGBQUAD *end;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
return 0;
}
/* Transfer color info */
if (dc->w.bitsPerPixel <= 8) {
palEntry = palette->logpalette.palPalEntry + startpos;
if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
entries = (1 << dc->w.bitsPerPixel) - startpos;
}
for (end = colors + entries; colors < end; palEntry++, colors++)
{
palEntry->peRed = colors->rgbRed;
palEntry->peGreen = colors->rgbGreen;
palEntry->peBlue = colors->rgbBlue;
}
} else {
entries = 0;
}
GDI_HEAP_UNLOCK( dc->w.hPalette );
return entries;
}
/***********************************************************************
* GetDIBColorTable16 (GDI.603)
*/
UINT16 WINAPI GetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
RGBQUAD *colors )
{
return GetDIBColorTable32( hdc, startpos, entries, colors );
}
/***********************************************************************
* GetDIBColorTable32 (GDI32.169)
*/
UINT32 WINAPI GetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
RGBQUAD *colors )
{
DC * dc;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
RGBQUAD *end;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
return 0;
}
/* Transfer color info */
if (dc->w.bitsPerPixel <= 8) {
palEntry = palette->logpalette.palPalEntry + startpos;
if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
entries = (1 << dc->w.bitsPerPixel) - startpos;
}
for (end = colors + entries; colors < end; palEntry++, colors++)
{
colors->rgbRed = palEntry->peRed;
colors->rgbGreen = palEntry->peGreen;
colors->rgbBlue = palEntry->peBlue;
colors->rgbReserved = 0;
}
} else {
entries = 0;
}
GDI_HEAP_UNLOCK( dc->w.hPalette );
return entries;
}
/***********************************************************************
* GetDIBits16 (GDI.441)
*/
INT16 WINAPI GetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
UINT16 lines, LPSTR bits, BITMAPINFO * info,
UINT16 coloruse )
{
return GetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
}
/******************************************************************************
* GetDIBits32 [GDI32.170] Retrieves bits of bitmap and copies to buffer
*
* RETURNS
* Success: Number of scan lines copied from bitmap
* Failure: 0
*
* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
*/
INT32 WINAPI GetDIBits32(
HDC32 hdc, /* [in] Handle to device context */
HBITMAP32 hbitmap, /* [in] Handle to bitmap */
UINT32 startscan, /* [in] First scan line to set in dest bitmap */
UINT32 lines, /* [in] Number of scan lines to copy */
LPSTR bits, /* [out] Address of array for bitmap bits */
BITMAPINFO * info, /* [out] Address of structure with bitmap data */
UINT32 coloruse) /* [in] RGB or palette index */
{
DC * dc;
BITMAPOBJ * bmp;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
XImage * bmpImage;
int i, x, y;
if (!lines) return 0;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return 0;
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
GDI_HEAP_UNLOCK( hbitmap );
return 0;
}
/* Transfer color info */
if (info->bmiHeader.biBitCount<=8) {
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;
}
}
if (bits)
{
BYTE* bbits = bits;
int pad, yend, xend = bmp->bitmap.bmWidth;
TRACE(bitmap, "%u scanlines of (%i,%i) -> (%i,%i) starting from %u\n",
lines, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
(int)info->bmiHeader.biWidth, (int)info->bmiHeader.biHeight, startscan );
/* adjust number of scanlines to copy */
if( lines > info->bmiHeader.biHeight ) lines = info->bmiHeader.biHeight;
yend = startscan + lines;
if( startscan >= bmp->bitmap.bmHeight )
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( dc->w.hPalette );
return FALSE;
}
if( yend > bmp->bitmap.bmHeight ) yend = bmp->bitmap.bmHeight;
/* adjust scanline width */
pad = info->bmiHeader.biWidth - bmp->bitmap.bmWidth;
if( pad < 0 )
{
/* bitmap is wider than DIB, copy only a part */
pad = 0;
xend = info->bmiHeader.biWidth;
}
EnterCriticalSection( &X11DRV_CritSection );
bmpImage = (XImage *)CALL_LARGE_STACK( BITMAP_GetXImage, bmp );
switch( info->bmiHeader.biBitCount )
{
case 8:
/* pad up to 32 bit */
pad += (4 - (info->bmiHeader.biWidth & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ )
*bbits++ = XGetPixel( bmpImage, x, y );
bbits += pad;
}
break;
case 1:
pad += ((32 - (info->bmiHeader.biWidth & 31)) / 8) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
if (!(x&7)) *bbits = 0;
*bbits |= XGetPixel( bmpImage, x, y)<<(7-(x&7));
if ((x&7)==7) bbits++;
}
bbits += pad;
}
break;
case 4:
pad += ((8 - (info->bmiHeader.biWidth & 7)) / 2) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
if (!(x&1)) *bbits = 0;
*bbits |= XGetPixel( bmpImage, x, y)<<(4*(1-(x&1)));
if ((x&1)==1) bbits++;
}
bbits += pad;
}
break;
case 15:
case 16:
pad += (4 - ((info->bmiHeader.biWidth*2) & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = pixel & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
}
bbits += pad;
}
break;
case 24:
pad += (4 - ((info->bmiHeader.biWidth*3) & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = (pixel >>16) & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
*bbits++ = pixel & 0xff;
}
bbits += pad;
}
break;
case 32:
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = (pixel >>16) & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
*bbits++ = pixel & 0xff;
}
}
break;
default:
WARN(bitmap,"Unsupported depth %d\n",
info->bmiHeader.biBitCount);
break;
}
XDestroyImage( bmpImage );
LeaveCriticalSection( &X11DRV_CritSection );
info->bmiHeader.biCompression = 0;
}
else if( info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) )
{
/* fill in struct members */
info->bmiHeader.biWidth = bmp->bitmap.bmWidth;
info->bmiHeader.biHeight = bmp->bitmap.bmHeight;
info->bmiHeader.biPlanes = 1;
info->bmiHeader.biBitCount = bmp->bitmap.bmBitsPixel;
info->bmiHeader.biSizeImage = bmp->bitmap.bmHeight *
DIB_GetDIBWidthBytes( bmp->bitmap.bmWidth,
bmp->bitmap.bmBitsPixel );
info->bmiHeader.biCompression = 0;
}
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( dc->w.hPalette );
return lines;
}
/***********************************************************************
* CreateDIBitmap16 (GDI.442)
*/
HBITMAP16 WINAPI CreateDIBitmap16( HDC16 hdc, const BITMAPINFOHEADER * header,
DWORD init, LPCVOID bits, const BITMAPINFO * data,
UINT16 coloruse )
{
return CreateDIBitmap32( hdc, header, init, bits, data, coloruse );
}
/***********************************************************************
* CreateDIBitmap32 (GDI32.37)
*/
HBITMAP32 WINAPI CreateDIBitmap32( HDC32 hdc, const BITMAPINFOHEADER *header,
DWORD init, LPCVOID bits, const BITMAPINFO *data,
UINT32 coloruse )
{
HBITMAP32 handle;
BOOL32 fColor;
DWORD width;
int height;
WORD bpp;
WORD compr;
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
if (height < 0) height = -height;
/* Check if we should create a monochrome or color bitmap. */
/* We create a monochrome bitmap only if it has exactly 2 */
/* colors, which are either black or white, nothing else. */
/* In all other cases, we create a color bitmap. */
if (bpp != 1) fColor = TRUE;
else if ((coloruse != DIB_RGB_COLORS) ||
(init != CBM_INIT) || !data) fColor = FALSE;
else
{
if (data->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))
{
RGBQUAD *rgb = data->bmiColors;
DWORD col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
{
rgb++;
col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
}
else fColor = TRUE;
}
else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors;
DWORD col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
{
rgb++;
col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
}
else fColor = TRUE;
}
else
{
WARN(bitmap, "(%ld): wrong size for data\n",
data->bmiHeader.biSize );
return 0;
}
}
/* Now create the bitmap */
handle = fColor ? CreateBitmap32( width, height, 1, screenDepth, NULL ) :
CreateBitmap32( width, height, 1, 1, NULL );
if (!handle) return 0;
if (init == CBM_INIT)
SetDIBits32( hdc, handle, 0, height, bits, data, coloruse );
return handle;
}
/***********************************************************************
* DIB_DoProtectDIBSection
*/
static void DIB_DoProtectDIBSection( BITMAPOBJ *bmp, DWORD new_prot )
{
DIBSECTION *dib = &bmp->dib->dibSection;
INT32 effHeight = dib->dsBm.bmHeight >= 0? dib->dsBm.bmHeight
: -dib->dsBm.bmHeight;
INT32 totalSize = dib->dsBmih.biSizeImage? dib->dsBmih.biSizeImage
: dib->dsBm.bmWidthBytes * effHeight;
DWORD old_prot;
VirtualProtect(dib->dsBm.bmBits, totalSize, new_prot, &old_prot);
TRACE(bitmap, "Changed protection from %ld to %ld\n",
old_prot, new_prot);
}
/***********************************************************************
* DIB_DoUpdateDIBSection
*/
static void DIB_DoUpdateDIBSection( BITMAPOBJ *bmp, BOOL32 toDIB )
{
DIBSECTIONOBJ *dib = bmp->dib;
DIB_SETIMAGEBITS_DESCR descr;
if (DIB_GetBitmapInfo( &dib->dibSection.dsBmih, &descr.infoWidth, &descr.lines,
&descr.infoBpp, &descr.compression ) == -1)
return;
descr.dc = NULL;
descr.image = dib->image;
descr.colorMap = dib->colorMap;
descr.nColorMap = dib->nColorMap;
descr.bits = dib->dibSection.dsBm.bmBits;
descr.depth = bmp->bitmap.bmBitsPixel;
descr.drawable = bmp->pixmap;
descr.gc = BITMAP_GC(bmp);
descr.xSrc = 0;
descr.ySrc = 0;
descr.xDest = 0;
descr.yDest = 0;
descr.width = bmp->bitmap.bmWidth;
descr.height = bmp->bitmap.bmHeight;
if (toDIB)
{
TRACE(bitmap, "Copying from Pixmap to DIB bits\n");
EnterCriticalSection( &X11DRV_CritSection );
CALL_LARGE_STACK( DIB_GetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
}
else
{
TRACE(bitmap, "Copying from DIB bits to Pixmap\n");
EnterCriticalSection( &X11DRV_CritSection );
CALL_LARGE_STACK( DIB_SetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
}
}
/***********************************************************************
* DIB_FaultHandler
*/
static BOOL32 DIB_FaultHandler( LPVOID res, LPVOID addr )
{
BOOL32 handled = FALSE;
BITMAPOBJ *bmp;
bmp = (BITMAPOBJ *)GDI_GetObjPtr( (HBITMAP32)res, BITMAP_MAGIC );
if (!bmp) return FALSE;
if (bmp->dib)
switch (bmp->dib->status)
{
case DIB_GdiMod:
TRACE( bitmap, "called in status DIB_GdiMod\n" );
DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
DIB_DoUpdateDIBSection( bmp, TRUE );
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
bmp->dib->status = DIB_InSync;
handled = TRUE;
break;
case DIB_InSync:
TRACE( bitmap, "called in status DIB_InSync\n" );
DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
bmp->dib->status = DIB_AppMod;
handled = TRUE;
break;
case DIB_AppMod:
FIXME( bitmap, "called in status DIB_AppMod: "
"this can't happen!\n" );
break;
case DIB_NoHandler:
FIXME( bitmap, "called in status DIB_NoHandler: "
"this can't happen!\n" );
break;
}
GDI_HEAP_UNLOCK( (HBITMAP32)res );
return handled;
}
/***********************************************************************
* DIB_UpdateDIBSection
*/
void DIB_UpdateDIBSection( DC *dc, BOOL32 toDIB )
{
BITMAPOBJ *bmp;
/* Ensure this is a Compatible DC that has a DIB section selected */
if (!dc) return;
if (!(dc->w.flags & DC_MEMORY)) return;
bmp = (BITMAPOBJ *)GDI_GetObjPtr( dc->w.hBitmap, BITMAP_MAGIC );
if (!bmp) return;
if (!bmp->dib)
{
GDI_HEAP_UNLOCK(dc->w.hBitmap);
return;
}
if (!toDIB)
{
/* Prepare for access to the DIB by GDI functions */
switch (bmp->dib->status)
{
default:
case DIB_NoHandler:
DIB_DoUpdateDIBSection( bmp, FALSE );
break;
case DIB_GdiMod:
TRACE( bitmap, "fromDIB called in status DIB_GdiMod\n" );
/* nothing to do */
break;
case DIB_InSync:
TRACE( bitmap, "fromDIB called in status DIB_InSync\n" );
/* nothing to do */
break;
case DIB_AppMod:
TRACE( bitmap, "fromDIB called in status DIB_AppMod\n" );
DIB_DoUpdateDIBSection( bmp, FALSE );
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
bmp->dib->status = DIB_InSync;
break;
}
}
else
{
/* Acknowledge write access to the DIB by GDI functions */
switch (bmp->dib->status)
{
default:
case DIB_NoHandler:
DIB_DoUpdateDIBSection( bmp, TRUE );
break;
case DIB_GdiMod:
TRACE( bitmap, " toDIB called in status DIB_GdiMod\n" );
/* nothing to do */
break;
case DIB_InSync:
TRACE( bitmap, " toDIB called in status DIB_InSync\n" );
DIB_DoProtectDIBSection( bmp, PAGE_NOACCESS );
bmp->dib->status = DIB_GdiMod;
break;
case DIB_AppMod:
FIXME( bitmap, " toDIB called in status DIB_AppMod: "
"this can't happen!\n" );
break;
}
}
GDI_HEAP_UNLOCK(dc->w.hBitmap);
}
/***********************************************************************
* CreateDIBSection16 (GDI.489)
*/
HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, BITMAPINFO *bmi, UINT16 usage,
LPVOID **bits, HANDLE32 section,
DWORD offset)
{
return CreateDIBSection32(hdc, bmi, usage, bits, section, offset);
}
/***********************************************************************
* CreateDIBSection32 (GDI32.36)
*/
HBITMAP32 WINAPI CreateDIBSection32 (HDC32 hdc, BITMAPINFO *bmi, UINT32 usage,
LPVOID **bits,HANDLE32 section,
DWORD offset)
{
HBITMAP32 res = 0;
BITMAPOBJ *bmp = NULL;
DIBSECTIONOBJ *dib = NULL;
int *colorMap = NULL;
int nColorMap;
/* Fill BITMAP32 structure with DIB data */
BITMAPINFOHEADER *bi = &bmi->bmiHeader;
INT32 effHeight, totalSize;
BITMAP32 bm;
TRACE(bitmap, "format (%ld,%ld), planes %d, bpp %d, size %ld, colors %ld (%s)\n",
bi->biWidth, bi->biHeight, bi->biPlanes, bi->biBitCount,
bi->biSizeImage, bi->biClrUsed, usage == DIB_PAL_COLORS? "PAL" : "RGB");
bm.bmType = 0;
bm.bmWidth = bi->biWidth;
bm.bmHeight = bi->biHeight;
bm.bmWidthBytes = DIB_GetDIBWidthBytes(bm.bmWidth, bi->biBitCount);
bm.bmPlanes = bi->biPlanes;
bm.bmBitsPixel = bi->biBitCount;
bm.bmBits = NULL;
/* Get storage location for DIB bits */
effHeight = bm.bmHeight >= 0 ? bm.bmHeight : -bm.bmHeight;
totalSize = bi->biSizeImage? bi->biSizeImage : bm.bmWidthBytes * effHeight;
if (section)
bm.bmBits = MapViewOfFile(section, FILE_MAP_ALL_ACCESS,
0L, offset, totalSize);
else
bm.bmBits = VirtualAlloc(NULL, totalSize,
MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
/* Create Color Map */
if (bm.bmBits && bm.bmBitsPixel <= 8)
{
DC *dc = hdc? (DC *)GDI_GetObjPtr(hdc, DC_MAGIC) : NULL;
if (hdc && !dc) dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!hdc || dc)
colorMap = DIB_BuildColorMap( dc, usage, bm.bmBitsPixel,
bmi, &nColorMap );
GDI_HEAP_UNLOCK(hdc);
}
/* Allocate Memory for DIB and fill structure */
if (bm.bmBits)
dib = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DIBSECTIONOBJ));
if (dib)
{
dib->dibSection.dsBm = bm;
dib->dibSection.dsBmih = *bi;
/* FIXME: dib->dibSection.dsBitfields ??? */
dib->dibSection.dshSection = section;
dib->dibSection.dsOffset = offset;
dib->status = DIB_NoHandler;
dib->nColorMap = nColorMap;
dib->colorMap = colorMap;
}
/* Create Device Dependent Bitmap and add DIB pointer */
if (dib)
{
res = CreateDIBitmap32(hdc, bi, 0, NULL, bmi, usage);
bmp = (BITMAPOBJ *) GDI_GetObjPtr(res, BITMAP_MAGIC);
if (bmp) bmp->dib = dib;
}
/* Create XImage */
if (dib && bmp)
XCREATEIMAGE( dib->image, bm.bmWidth, effHeight, bmp->bitmap.bmBitsPixel );
/* Clean up in case of errors */
if (!res || !bmp || !dib || !bm.bmBits || (bm.bmBitsPixel <= 8 && !colorMap))
{
if (bm.bmBits)
if (section)
UnmapViewOfFile(bm.bmBits), bm.bmBits = NULL;
else
VirtualFree(bm.bmBits, MEM_RELEASE, 0L), bm.bmBits = NULL;
if (dib->image) XDestroyImage(dib->image), dib->image = NULL;
if (colorMap) HeapFree(GetProcessHeap(), 0, colorMap), colorMap = NULL;
if (dib) HeapFree(GetProcessHeap(), 0, dib), dib = NULL;
if (res) DeleteObject32(res), res = 0;
}
/* Install fault handler, if possible */
if (bm.bmBits)
if (VIRTUAL_SetFaultHandler(bm.bmBits, DIB_FaultHandler, (LPVOID)res))
{
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
dib->status = DIB_InSync;
}
/* Return BITMAP handle and storage location */
if (res) GDI_HEAP_UNLOCK(res);
if (bm.bmBits && bits) *bits = bm.bmBits;
return res;
}
/***********************************************************************
* DIB_DeleteDIBSection
*/
void DIB_DeleteDIBSection( BITMAPOBJ *bmp )
{
if (bmp && bmp->dib)
{
DIBSECTIONOBJ *dib = bmp->dib;
if (dib->dibSection.dsBm.bmBits)
if (dib->dibSection.dshSection)
UnmapViewOfFile(dib->dibSection.dsBm.bmBits);
else
VirtualFree(dib->dibSection.dsBm.bmBits, MEM_RELEASE, 0L);
if (dib->image)
XDestroyImage( dib->image );
if (dib->colorMap)
HeapFree(GetProcessHeap(), 0, dib->colorMap);
HeapFree(GetProcessHeap(), 0, dib);
bmp->dib = NULL;
}
}