/* * GDI bitmap objects * * Copyright 1993 Alexandre Julliard */ static char Copyright[] = "Copyright Alexandre Julliard, 1993"; #include #include #include #include #include "gdi.h" #include "bitmap.h" #include "stddebug.h" /* #define DEBUG_GDI */ /* #undef DEBUG_GDI */ /* #define DEBUG_BITMAP */ /* #define DEBUG_BITMAP */ #include "debug.h" /* GCs used for B&W and color bitmap operations */ GC BITMAP_monoGC = 0, BITMAP_colorGC = 0; extern void DC_InitDC( HDC hdc ); /* objects/dc.c */ extern void CLIPPING_UpdateGCRegion( DC * dc ); /* objects/clipping.c */ /*********************************************************************** * BITMAP_Init */ BOOL BITMAP_Init() { Pixmap tmpPixmap; /* Create the necessary GCs */ if ((tmpPixmap = XCreatePixmap( display, rootWindow, 1, 1, 1 ))) { BITMAP_monoGC = XCreateGC( display, tmpPixmap, 0, NULL ); XSetGraphicsExposures( display, BITMAP_monoGC, False ); XFreePixmap( display, tmpPixmap ); } if (screenDepth != 1) { if ((tmpPixmap = XCreatePixmap(display, rootWindow, 1,1,screenDepth))) { BITMAP_colorGC = XCreateGC( display, tmpPixmap, 0, NULL ); XSetGraphicsExposures( display, BITMAP_colorGC, False ); XFreePixmap( display, tmpPixmap ); } } return TRUE; } /*********************************************************************** * BITMAP_BmpToImage * * Create an XImage pointing to the bitmap data. */ static XImage *BITMAP_BmpToImage( BITMAP * bmp, void * bmpData ) { extern void _XInitImageFuncPtrs( XImage* ); XImage * image; image = XCreateImage( display, DefaultVisualOfScreen(screen), bmp->bmBitsPixel, ZPixmap, 0, bmpData, bmp->bmWidth, bmp->bmHeight, 16, bmp->bmWidthBytes ); if (!image) return 0; image->byte_order = MSBFirst; image->bitmap_bit_order = MSBFirst; image->bitmap_unit = 16; _XInitImageFuncPtrs(image); return image; } /*********************************************************************** * CreateBitmap (GDI.48) */ HBITMAP CreateBitmap( short width, short height, BYTE planes, BYTE bpp, LPSTR bits ) { BITMAP bitmap = { 0, width, height, 0, planes, bpp, bits }; dprintf_gdi(stddeb, "CreateBitmap: %dx%d, %d colors\n", width, height, 1 << (planes*bpp) ); return CreateBitmapIndirect( &bitmap ); } /*********************************************************************** * CreateCompatibleBitmap (GDI.51) */ HBITMAP CreateCompatibleBitmap( HDC hdc, short width, short height ) { DC * dc; dprintf_gdi(stddeb, "CreateCompatibleBitmap: %d %dx%d\n", hdc, width, height ); if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0; return CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL ); } /*********************************************************************** * CreateBitmapIndirect (GDI.49) */ HBITMAP CreateBitmapIndirect( BITMAP * bmp ) { BITMAPOBJ * bmpObjPtr; HBITMAP hbitmap; /* Check parameters */ if (!bmp->bmHeight || !bmp->bmWidth) return 0; if (bmp->bmPlanes != 1) return 0; if ((bmp->bmBitsPixel != 1) && (bmp->bmBitsPixel != screenDepth)) return 0; if (bmp->bmHeight < 0) bmp->bmHeight = -bmp->bmHeight; if (bmp->bmWidth < 0) bmp->bmWidth = -bmp->bmWidth; /* Create the BITMAPOBJ */ hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC ); if (!hbitmap) return 0; bmpObjPtr = (BITMAPOBJ *) GDI_HEAP_ADDR( hbitmap ); bmpObjPtr->size.cx = 0; bmpObjPtr->size.cy = 0; bmpObjPtr->bitmap = *bmp; bmpObjPtr->bitmap.bmBits = NULL; bmpObjPtr->bitmap.bmWidthBytes = (bmp->bmWidth*bmp->bmBitsPixel+15)/16 * 2; /* Create the pixmap */ bmpObjPtr->pixmap = XCreatePixmap( display, rootWindow, bmp->bmWidth, bmp->bmHeight, bmp->bmBitsPixel ); if (!bmpObjPtr->pixmap) { GDI_HEAP_FREE( hbitmap ); hbitmap = 0; } else if (bmp->bmBits) /* Set bitmap bits */ SetBitmapBits( hbitmap, bmp->bmHeight*bmp->bmWidthBytes, bmp->bmBits ); return hbitmap; } /*********************************************************************** * GetBitmapBits (GDI.74) */ LONG GetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer ) { BITMAPOBJ * bmp; LONG height; XImage * image; bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC ); if (!bmp) return 0; dprintf_bitmap(stddeb, "GetBitmapBits: %dx%d %d colors %p\n", bmp->bitmap.bmWidth, bmp->bitmap.bmHeight, 1 << bmp->bitmap.bmBitsPixel, buffer ); /* Only get entire lines */ height = count / bmp->bitmap.bmWidthBytes; if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight; if (!height) return 0; if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0; XGetSubImage( display, bmp->pixmap, 0, 0, bmp->bitmap.bmWidth, height, AllPlanes, ZPixmap, image, 0, 0 ); image->data = NULL; XDestroyImage( image ); return height * bmp->bitmap.bmWidthBytes; } /*********************************************************************** * SetBitmapBits (GDI.106) */ LONG SetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer ) { BITMAPOBJ * bmp; LONG height; XImage * image; bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC ); if (!bmp) return 0; dprintf_bitmap(stddeb, "SetBitmapBits: %dx%d %d colors %p\n", bmp->bitmap.bmWidth, bmp->bitmap.bmHeight, 1 << bmp->bitmap.bmBitsPixel, buffer ); /* Only set entire lines */ height = count / bmp->bitmap.bmWidthBytes; if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight; if (!height) return 0; if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0; XPutImage( display, bmp->pixmap, BITMAP_GC(bmp), image, 0, 0, 0, 0, bmp->bitmap.bmWidth, height ); image->data = NULL; XDestroyImage( image ); return height * bmp->bitmap.bmWidthBytes; } /*********************************************************************** * BMP_DeleteObject */ BOOL BMP_DeleteObject( HBITMAP hbitmap, BITMAPOBJ * bitmap ) { XFreePixmap( display, bitmap->pixmap ); return GDI_FreeObject( hbitmap ); } /*********************************************************************** * BMP_GetObject */ int BMP_GetObject( BITMAPOBJ * bmp, int count, LPSTR buffer ) { if (count > sizeof(BITMAP)) count = sizeof(BITMAP); memcpy( buffer, &bmp->bitmap, count ); return count; } /*********************************************************************** * BITMAP_SelectObject */ HBITMAP BITMAP_SelectObject( HDC hdc, DC * dc, HBITMAP hbitmap, BITMAPOBJ * bmp ) { HRGN hrgn; HBITMAP prevHandle = dc->w.hBitmap; if (!(dc->w.flags & DC_MEMORY)) return 0; hrgn = CreateRectRgn( 0, 0, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight ); if (!hrgn) return 0; DeleteObject( dc->w.hVisRgn ); dc->w.hVisRgn = hrgn; dc->u.x.drawable = bmp->pixmap; dc->w.hBitmap = hbitmap; /* Change GC depth if needed */ if (dc->w.bitsPerPixel != bmp->bitmap.bmBitsPixel) { XFreeGC( display, dc->u.x.gc ); dc->u.x.gc = XCreateGC( display, dc->u.x.drawable, 0, NULL ); dc->w.bitsPerPixel = bmp->bitmap.bmBitsPixel; DC_InitDC( hdc ); } else CLIPPING_UpdateGCRegion( dc ); /* Just update GC clip region */ return prevHandle; } /*********************************************************************** * CreateDiscardableBitmap (GDI.156) */ HBITMAP CreateDiscardableBitmap(HDC hdc, short width, short height) { dprintf_bitmap(stddeb,"CreateDiscardableBitmap(%04X, %d, %d); " "// call CreateCompatibleBitmap() for now!\n", hdc, width, height); return CreateCompatibleBitmap(hdc, width, height); } /*********************************************************************** * GetBitmapDimensionEx (GDI.468) */ BOOL GetBitmapDimensionEx( HBITMAP hbitmap, LPSIZE size ) { BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC ); if (!bmp) return FALSE; *size = bmp->size; return TRUE; } /*********************************************************************** * GetBitmapDimension (GDI.162) */ DWORD GetBitmapDimension( HBITMAP hbitmap ) { SIZE size; if (!GetBitmapDimensionEx( hbitmap, &size )) return 0; return size.cx | (size.cy << 16); } /*********************************************************************** * SetBitmapDimensionEx (GDI.478) */ BOOL SetBitmapDimensionEx( HBITMAP hbitmap, short x, short y, LPSIZE prevSize ) { BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC ); if (!bmp) return FALSE; if (prevSize) *prevSize = bmp->size; bmp->size.cx = x; bmp->size.cy = y; return TRUE; } /*********************************************************************** * SetBitmapDimension (GDI.163) */ DWORD SetBitmapDimension( HBITMAP hbitmap, short x, short y ) { SIZE size; if (!SetBitmapDimensionEx( hbitmap, x, y, &size )) return 0; return size.cx | (size.cy << 16); }