918 lines
28 KiB
C
918 lines
28 KiB
C
/*
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* GDI device-independent bitmaps
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*
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* Copyright 1993,1994 Alexandre Julliard
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*/
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#define NO_TRANSITION_TYPES /* This file is Win32-clean */
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#include <stdio.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include "dc.h"
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#include "bitmap.h"
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#include "callback.h"
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#include "palette.h"
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#include "stddebug.h"
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#include "color.h"
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#include "debug.h"
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extern void CLIPPING_UpdateGCRegion(DC* );
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/***********************************************************************
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* DIB_GetImageWidthBytes
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*
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* Return the width of an X image in bytes
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*/
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int DIB_GetImageWidthBytes( int width, int depth )
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{
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int words;
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switch(depth)
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{
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case 1: words = (width + 31) / 32; break;
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case 4: words = (width + 7) / 8; break;
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case 8: words = (width + 3) / 4; break;
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case 15:
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case 16: words = (width + 1) / 2; break;
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case 24: words = width; break;
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default:
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fprintf(stderr, "DIB: unsupported depth %d.\n", depth );
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exit(1);
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}
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return 4 * words;
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}
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/***********************************************************************
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* DIB_BitmapInfoSize
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*
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* Return the size of the bitmap info structure.
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*/
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int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
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{
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int colors;
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if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
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colors = (core->bcBitCount != 24) ? 1 << core->bcBitCount : 0;
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return sizeof(BITMAPCOREHEADER) + colors *
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((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
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}
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else /* assume BITMAPINFOHEADER */
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{
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colors = info->bmiHeader.biClrUsed;
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if (!colors && (info->bmiHeader.biBitCount != 24))
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colors = 1 << info->bmiHeader.biBitCount;
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return sizeof(BITMAPINFOHEADER) + colors *
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((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
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}
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}
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/***********************************************************************
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* DIB_DIBmpToImage
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*
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* Create an XImage pointing to the bitmap data.
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*/
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static XImage *DIB_DIBmpToImage( BITMAPINFOHEADER * bmp, void * bmpData )
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{
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extern void _XInitImageFuncPtrs( XImage* );
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XImage * image;
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image = XCreateImage(display, DefaultVisualOfScreen( screen ),
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bmp->biBitCount, ZPixmap, 0, bmpData,
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bmp->biWidth, bmp->biHeight, 32,
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DIB_GetImageWidthBytes(bmp->biWidth,bmp->biBitCount));
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if (!image) return 0;
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image->byte_order = MSBFirst;
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image->bitmap_bit_order = MSBFirst;
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image->bitmap_unit = 16;
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_XInitImageFuncPtrs(image);
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return image;
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}
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/***********************************************************************
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* DIB_GetBitmapInfo
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*
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* Get the info from a bitmap header.
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* Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
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*/
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static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
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DWORD *height, WORD *bpp )
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{
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if (header->biSize == sizeof(BITMAPINFOHEADER))
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{
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*width = header->biWidth;
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*height = header->biHeight;
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*bpp = header->biBitCount;
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return 1;
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}
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if (header->biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
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*width = core->bcWidth;
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*height = core->bcHeight;
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*bpp = core->bcBitCount;
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return 0;
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}
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fprintf( stderr, "DIB_GetBitmapInfo: wrong size (%ld) for header\n",
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header->biSize );
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return -1;
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}
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/***********************************************************************
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* DIB_BuildColorMap
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*
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* Build the color map from the bitmap palette. Should not be called
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* for a 24-bit deep bitmap.
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*/
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static int *DIB_BuildColorMap( DC *dc, WORD coloruse, WORD depth,
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BITMAPINFO *info )
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{
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int i, colors;
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BOOL32 isInfo;
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WORD *colorPtr;
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int *colorMapping;
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if ((isInfo = (info->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))))
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{
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colors = info->bmiHeader.biClrUsed;
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if (!colors) colors = 1 << info->bmiHeader.biBitCount;
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colorPtr = (WORD *)info->bmiColors;
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}
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else /* assume BITMAPCOREINFO */
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{
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colors = 1 << ((BITMAPCOREHEADER *)&info->bmiHeader)->bcBitCount;
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colorPtr = (WORD *)((BITMAPCOREINFO *)info)->bmciColors;
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}
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if (!(colorMapping = (int *)malloc( colors * sizeof(int) ))) return NULL;
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if (coloruse == DIB_RGB_COLORS)
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{
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if (isInfo)
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{
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RGBQUAD * rgb = (RGBQUAD *)colorPtr;
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if (depth == 1) /* Monochrome */
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for (i = 0; i < colors; i++, rgb++)
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colorMapping[i] = (rgb->rgbRed + rgb->rgbGreen +
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rgb->rgbBlue > 255*3/2);
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else
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for (i = 0; i < colors; i++, rgb++)
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colorMapping[i] = COLOR_ToPhysical( dc, RGB(rgb->rgbRed,
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rgb->rgbGreen,
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rgb->rgbBlue));
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}
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else
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{
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RGBTRIPLE * rgb = (RGBTRIPLE *)colorPtr;
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if (depth == 1) /* Monochrome */
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for (i = 0; i < colors; i++, rgb++)
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colorMapping[i] = (rgb->rgbtRed + rgb->rgbtGreen +
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rgb->rgbtBlue > 255*3/2);
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else
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for (i = 0; i < colors; i++, rgb++)
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colorMapping[i] = COLOR_ToPhysical( dc, RGB(rgb->rgbtRed,
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rgb->rgbtGreen,
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rgb->rgbtBlue));
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}
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}
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else /* DIB_PAL_COLORS */
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{
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for (i = 0; i < colors; i++, colorPtr++)
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colorMapping[i] = COLOR_ToPhysical( dc, PALETTEINDEX(*colorPtr) );
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}
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return colorMapping;
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}
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/***********************************************************************
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* DIB_SetImageBits_1
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*
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* SetDIBits for a 1-bit deep DIB.
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*/
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static void DIB_SetImageBits_1( DWORD lines, BYTE *bits, DWORD width,
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int *colors, XImage *bmpImage )
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{
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DWORD i, x;
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BYTE pad, pix;
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if (!(width & 31)) pad = 0;
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else pad = ((32 - (width & 31)) + 7) / 8;
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while (lines--)
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{
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for (i = width/8, x = 0; (i > 0); i--)
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{
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pix = *bits++;
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XPutPixel( bmpImage, x++, lines, colors[pix >> 7] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 6) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 5) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 4) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 3) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 2) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[(pix >> 1) & 1] );
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XPutPixel( bmpImage, x++, lines, colors[pix & 1] );
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}
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pix = *bits;
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switch(width & 7)
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{
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case 7: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 6: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 5: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 4: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 3: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 2: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] ); pix <<= 1;
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case 1: XPutPixel( bmpImage, x++, lines, colors[pix >> 7] );
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}
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bits += pad;
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}
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}
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/***********************************************************************
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* DIB_SetImageBits_4
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*
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* SetDIBits for a 4-bit deep DIB.
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*/
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static void DIB_SetImageBits_4( DWORD lines, BYTE *bits, DWORD width,
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int *colors, XImage *bmpImage )
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{
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DWORD i, x;
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BYTE pad;
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if (!(width & 7)) pad = 0;
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else pad = ((8 - (width & 7)) + 1) / 2;
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while (lines--)
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{
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for (i = width/2, x = 0; i > 0; i--)
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{
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BYTE pix = *bits++;
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XPutPixel( bmpImage, x++, lines, colors[pix >> 4] );
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XPutPixel( bmpImage, x++, lines, colors[pix & 0x0f] );
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}
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if (width & 1) XPutPixel( bmpImage, x, lines, colors[*bits >> 4] );
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bits += pad;
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}
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}
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#define check_xy(x,y) \
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if (x > width) { \
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x = 0; \
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if (lines) \
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lines--; \
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}
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/***********************************************************************
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* DIB_SetImageBits_RLE4
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*
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* SetDIBits for a 4-bit deep compressed DIB.
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*/
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static void DIB_SetImageBits_RLE4( DWORD lines, BYTE *bits, DWORD width,
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int *colors, XImage *bmpImage )
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{
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int x = 0, c, length;
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BYTE *begin = bits;
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lines--;
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while ((int)lines >= 0)
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{
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length = *bits++;
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if (length) { /* encoded */
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c = *bits++;
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while (length--) {
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XPutPixel(bmpImage, x++, lines, colors[c >> 4]);
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check_xy(x, y);
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if (length) {
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length--;
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XPutPixel(bmpImage, x++, lines, colors[c & 0xf]);
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check_xy(x, y);
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}
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}
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} else {
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length = *bits++;
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switch (length) {
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case 0: /* eol */
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x = 0;
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lines--;
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continue;
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case 1: /* eopicture */
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return;
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case 2: /* delta */
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x += *bits++;
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lines -= *bits++;
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continue;
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default: /* absolute */
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while (length--) {
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c = *bits++;
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XPutPixel(bmpImage, x++, lines, colors[c >> 4]);
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check_xy(x, y);
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if (length) {
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length--;
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XPutPixel(bmpImage, x++, lines, colors[c & 0xf]);
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check_xy(x, y);
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}
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}
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if ((bits - begin) & 1)
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bits++;
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}
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}
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}
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}
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/***********************************************************************
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* DIB_SetImageBits_8
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*
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* SetDIBits for an 8-bit deep DIB.
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*/
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static void DIB_SetImageBits_8( DWORD lines, BYTE *bits, DWORD width,
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int *colors, XImage *bmpImage )
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{
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DWORD x;
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BYTE pad = (4 - (width & 3)) & 3;
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while (lines--)
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{
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for (x = 0; x < width; x++)
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XPutPixel( bmpImage, x, lines, colors[*bits++] );
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bits += pad;
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}
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}
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/***********************************************************************
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* DIB_SetImageBits_RLE8
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*
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* SetDIBits for an 8-bit deep compressed DIB.
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*
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* This function rewritten 941113 by James Youngman. WINE blew out when I
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* first ran it because my desktop wallpaper is a (large) RLE8 bitmap.
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*
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* This was because the algorithm assumed that all RLE8 bitmaps end with the
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* 'End of bitmap' escape code. This code is very much laxer in what it
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* allows to end the expansion. Possibly too lax. See the note by
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* case RleDelta. BTW, MS's documentation implies that a correct RLE8
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* bitmap should end with RleEnd, but on the other hand, software exists
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* that produces ones that don't and Windows 3.1 doesn't complain a bit
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* about it.
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*
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* (No) apologies for my English spelling. [Emacs users: c-indent-level=4].
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* James A. Youngman <mbcstjy@afs.man.ac.uk>
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* [JAY]
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*/
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enum Rle8_EscapeCodes
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{
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/*
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* Apologies for polluting your file's namespace...
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*/
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RleEol = 0, /* End of line */
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RleEnd = 1, /* End of bitmap */
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RleDelta = 2 /* Delta */
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};
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static void DIB_SetImageBits_RLE8( DWORD lines, BYTE *bits, DWORD width,
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int *colors, XImage *bmpImage )
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{
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int x; /* X-positon on each line. Increases. */
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int line; /* Line #. Starts at lines-1, decreases */
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BYTE *pIn = bits; /* Pointer to current position in bits */
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BYTE length; /* The length pf a run */
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BYTE color_index; /* index into colors[] as read from bits */
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BYTE escape_code; /* See enum Rle8_EscapeCodes.*/
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WORD color; /* value of colour[color_index] */
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if (lines == 0) /* Let's hope this doesn't happen. */
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return;
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/*
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* Note that the bitmap data is stored by Windows starting at the
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* bottom line of the bitmap and going upwards. Within each line,
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* the data is stored left-to-right. That's the reason why line
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* goes from lines-1 to 0. [JAY]
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*/
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x = 0;
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line = lines-1;
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do
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{
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length = *pIn++;
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/*
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* If the length byte is not zero (which is the escape value),
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* We have a run of length pixels all the same colour. The colour
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* index is stored next.
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*
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* If the length byte is zero, we need to read the next byte to
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* know what to do. [JAY]
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*/
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if (length != 0)
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{
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/*
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* [Run-Length] Encoded mode
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*/
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color_index = (*pIn++); /* Get the colour index. */
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color = colors[color_index];
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while(length--)
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XPutPixel(bmpImage, x++, line, color);
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}
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else
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{
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/*
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* Escape codes (may be an absolute sequence though)
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*/
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escape_code = (*pIn++);
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switch(escape_code)
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{
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case RleEol: /* =0, end of line */
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{
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x = 0;
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line--;
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break;
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}
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case RleEnd: /* =1, end of bitmap */
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{
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/*
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* Not all RLE8 bitmaps end with this
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* code. For example, Paint Shop Pro
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* produces some that don't. That's (I think)
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* what caused the previous implementation to
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* fail. [JAY]
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*/
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line=-1; /* Cause exit from do loop. */
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break;
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}
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case RleDelta: /* =2, a delta */
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{
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/*
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* Note that deltaing to line 0
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* will cause an exit from the loop,
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* which may not be what is intended.
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* The fact that there is a delta in the bits
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* almost certainly implies that there is data
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* to follow. You may feel that we should
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* jump to the top of the loop to avoid exiting
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* in this case.
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*
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* TODO: Decide what to do here in that case. [JAY]
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*/
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x += (*pIn++);
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line -= (*pIn++);
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if (line == 0)
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{
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dprintf_bitmap(stddeb,
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"DIB_SetImageBits_RLE8(): "
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"Delta to last line of bitmap "
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"(wrongly?) causes loop exit\n");
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}
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break;
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}
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default: /* >2, switch to absolute mode */
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{
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/*
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* Absolute Mode
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*/
|
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length = escape_code;
|
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while(length--)
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{
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color_index = (*pIn++);
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XPutPixel(bmpImage, x++, line,
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colors[color_index]);
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}
|
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|
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/*
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* If you think for a moment you'll realise that the
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* only time we could ever possibly read an odd
|
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* number of bytes is when there is a 0x00 (escape),
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* a value >0x02 (absolute mode) and then an odd-
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* length run. Therefore this is the only place we
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* need to worry about it. Everywhere else the
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* bytes are always read in pairs. [JAY]
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*/
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if (escape_code & 1)
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pIn++; /* Throw away the pad byte. */
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break;
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}
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} /* switch (escape_code) : Escape sequence */
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} /* process either an encoded sequence or an escape sequence */
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|
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/* We expect to come here more than once per line. */
|
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} while (line >= 0); /* Do this until the bitmap is filled */
|
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|
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/*
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* Everybody comes here at the end.
|
|
* Check how we exited the loop and print a message if it's a bit odd.
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|
* [JAY]
|
|
*/
|
|
if ( (*(pIn-2) != 0/*escape*/) || (*(pIn-1)!= RleEnd) )
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|
{
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dprintf_bitmap(stddeb, "DIB_SetImageBits_RLE8(): End-of-bitmap "
|
|
"without (strictly) proper escape code. Last two "
|
|
"bytes were: %02X %02X.\n",
|
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(int)*(pIn-2),
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(int)*(pIn-1));
|
|
}
|
|
}
|
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|
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|
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/***********************************************************************
|
|
* DIB_SetImageBits_24
|
|
*
|
|
* SetDIBits for a 24-bit deep DIB.
|
|
*/
|
|
static void DIB_SetImageBits_24( DWORD lines, BYTE *bits, DWORD width,
|
|
DC *dc, XImage *bmpImage )
|
|
{
|
|
DWORD x;
|
|
BYTE pad = (4 - ((width*3) & 3)) & 3;
|
|
|
|
/* "bits" order is reversed for some reason */
|
|
|
|
while (lines--)
|
|
{
|
|
for (x = 0; x < width; x++, bits += 3)
|
|
XPutPixel( bmpImage, x, lines,
|
|
COLOR_ToPhysical(dc, RGB(bits[2],bits[1],bits[0])) );
|
|
|
|
bits += pad;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DIB_SetImageBits
|
|
*
|
|
* Transfer the bits to an X image.
|
|
* Helper function for SetDIBits() and SetDIBitsToDevice().
|
|
*/
|
|
static int DIB_SetImageBits( DC *dc, DWORD lines, WORD depth, LPSTR bits,
|
|
DWORD infoWidth, WORD infoBpp,
|
|
BITMAPINFO *info, WORD coloruse,
|
|
Drawable drawable, GC gc, int xSrc, int ySrc,
|
|
int xDest, int yDest, int width, int height )
|
|
{
|
|
int *colorMapping;
|
|
XImage *bmpImage;
|
|
DWORD compression = 0;
|
|
|
|
if (info->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))
|
|
compression = info->bmiHeader.biCompression;
|
|
|
|
/* Build the color mapping table */
|
|
|
|
if (infoBpp == 24) colorMapping = NULL;
|
|
else
|
|
if (!(colorMapping = DIB_BuildColorMap( dc, coloruse, depth, info )))
|
|
return 0;
|
|
|
|
if( dc->w.flags & DC_DIRTY ) CLIPPING_UpdateGCRegion(dc);
|
|
|
|
/* Transfer the pixels */
|
|
XCREATEIMAGE(bmpImage, infoWidth, lines, depth );
|
|
|
|
switch(infoBpp)
|
|
{
|
|
case 1:
|
|
DIB_SetImageBits_1( lines, bits, infoWidth,
|
|
colorMapping, bmpImage );
|
|
break;
|
|
case 4:
|
|
if (compression) DIB_SetImageBits_RLE4( lines, bits, infoWidth,
|
|
colorMapping, bmpImage );
|
|
else DIB_SetImageBits_4( lines, bits, infoWidth,
|
|
colorMapping, bmpImage );
|
|
break;
|
|
case 8:
|
|
if (compression) DIB_SetImageBits_RLE8( lines, bits, infoWidth,
|
|
colorMapping, bmpImage );
|
|
else DIB_SetImageBits_8( lines, bits, infoWidth,
|
|
colorMapping, bmpImage );
|
|
break;
|
|
case 24:
|
|
DIB_SetImageBits_24( lines, bits, infoWidth, dc, bmpImage );
|
|
break;
|
|
default:
|
|
fprintf( stderr, "Invalid depth %d for SetDIBits!\n", infoBpp );
|
|
break;
|
|
}
|
|
if (colorMapping) free(colorMapping);
|
|
XPutImage( display, drawable, gc, bmpImage, xSrc, ySrc,
|
|
xDest, yDest, width, height );
|
|
XDestroyImage( bmpImage );
|
|
return lines;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* StretchDIBits16 (GDI.439)
|
|
*/
|
|
INT16 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 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 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)
|
|
*/
|
|
INT32 SetDIBits32( HDC32 hdc, HBITMAP32 hbitmap, UINT32 startscan,
|
|
UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
|
|
UINT32 coloruse )
|
|
{
|
|
DC * dc;
|
|
BITMAPOBJ * bmp;
|
|
DWORD width, height;
|
|
WORD bpp;
|
|
|
|
/* Check parameters */
|
|
|
|
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 (DIB_GetBitmapInfo( &info->bmiHeader, &width, &height, &bpp ) == -1)
|
|
return 0;
|
|
if (!lines || (startscan >= (WORD)height)) return 0;
|
|
if (startscan + lines > height) lines = height - startscan;
|
|
|
|
return CallTo32_LargeStack( (int(*)())DIB_SetImageBits, 16,
|
|
dc, lines, bmp->bitmap.bmBitsPixel,
|
|
bits, width, bpp, info,
|
|
coloruse, bmp->pixmap, BITMAP_GC(bmp), 0, 0, 0,
|
|
height - startscan - lines,
|
|
bmp->bitmap.bmWidth, lines );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetDIBitsToDevice16 (GDI.443)
|
|
*/
|
|
INT16 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 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 )
|
|
{
|
|
DC * dc;
|
|
DWORD width, height;
|
|
WORD bpp;
|
|
|
|
/* 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, &bpp ) == -1)
|
|
return 0;
|
|
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 */
|
|
XSetFunction( display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
|
|
return CallTo32_LargeStack( (int(*)())DIB_SetImageBits, 16,
|
|
dc, lines, dc->w.bitsPerPixel, bits, width,
|
|
bpp, 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 );
|
|
}
|
|
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDIBits16 (GDI.441)
|
|
*/
|
|
INT16 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)
|
|
*/
|
|
INT32 GetDIBits32( HDC32 hdc, HBITMAP32 hbitmap, UINT32 startscan,
|
|
UINT32 lines, LPSTR bits, BITMAPINFO * info,
|
|
UINT32 coloruse )
|
|
{
|
|
DC * dc;
|
|
BITMAPOBJ * bmp;
|
|
PALETTEENTRY * palEntry;
|
|
PALETTEOBJ * palette;
|
|
XImage * bmpImage, * dibImage;
|
|
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 )))
|
|
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 = (XImage *)CallTo32_LargeStack( (int (*)())XGetImage, 8,
|
|
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 );
|
|
}
|
|
info->bmiHeader.biCompression = 0;
|
|
return lines;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap16 (GDI.442)
|
|
*/
|
|
HBITMAP16 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 CreateDIBitmap32( HDC32 hdc, const BITMAPINFOHEADER *header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO *data,
|
|
UINT32 coloruse )
|
|
{
|
|
HBITMAP32 handle;
|
|
BOOL32 fColor;
|
|
DWORD width, height;
|
|
WORD bpp;
|
|
|
|
if (DIB_GetBitmapInfo( header, &width, &height, &bpp ) == -1) return 0;
|
|
|
|
/* 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
|
|
{
|
|
fprintf( stderr, "CreateDIBitmap: wrong size (%ld) for data\n",
|
|
data->bmiHeader.biSize );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Now create the bitmap */
|
|
|
|
handle = fColor ? CreateCompatibleBitmap( hdc, width, height ) :
|
|
CreateBitmap( width, height, 1, 1, NULL );
|
|
if (!handle) return 0;
|
|
|
|
if (init == CBM_INIT)
|
|
SetDIBits32( hdc, handle, 0, height, bits, data, coloruse );
|
|
return handle;
|
|
}
|