| /* |
| * GDI bitmap objects |
| * |
| * Copyright 1993 Alexandre Julliard |
| */ |
| |
| static char Copyright[] = "Copyright Alexandre Julliard, 1993"; |
| |
| #include <stdlib.h> |
| #include <X11/Xlib.h> |
| #include <X11/Xutil.h> |
| #include "gdi.h" |
| #include "bitmap.h" |
| |
| |
| /* Handle of the bitmap selected by default in a memory DC */ |
| HBITMAP BITMAP_hbitmapMemDC = 0; |
| |
| /* GCs used for B&W and color bitmap operations */ |
| GC BITMAP_monoGC = 0, BITMAP_colorGC = 0; |
| |
| |
| /*********************************************************************** |
| * 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 ); |
| } |
| } |
| |
| BITMAP_hbitmapMemDC = CreateBitmap( 1, 1, 1, 1, NULL ); |
| return (BITMAP_hbitmapMemDC != 0); |
| } |
| |
| |
| /*********************************************************************** |
| * 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( XT_display, DefaultVisualOfScreen(XT_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 }; |
| #ifdef DEBUG_GDI |
| printf( "CreateBitmap: %dx%d, %d colors\n", |
| width, height, 1 << (planes*bpp) ); |
| #endif |
| return CreateBitmapIndirect( &bitmap ); |
| } |
| |
| |
| /*********************************************************************** |
| * CreateCompatibleBitmap (GDI.51) |
| */ |
| HBITMAP CreateCompatibleBitmap( HDC hdc, short width, short height ) |
| { |
| DC * dc; |
| #ifdef DEBUG_GDI |
| printf( "CreateCompatibleBitmap: %d %dx%d\n", hdc, width, height ); |
| #endif |
| 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; |
| |
| /* 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; |
| |
| #ifdef DEBUG_BITMAP |
| printf( "GetBitmapBits: %dx%d %d colors %p\n", |
| bmp->bitmap.bmWidth, bmp->bitmap.bmHeight, |
| 1 << bmp->bitmap.bmBitsPixel, buffer ); |
| #endif |
| /* 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; |
| |
| #ifdef DEBUG_BITMAP |
| printf( "SetBitmapBits: %dx%d %d colors %p\n", |
| bmp->bitmap.bmWidth, bmp->bitmap.bmHeight, |
| 1 << bmp->bitmap.bmBitsPixel, buffer ); |
| #endif |
| /* 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 ) |
| { |
| HBITMAP prevHandle = dc->w.hBitmap; |
| |
| if (!(dc->w.flags & DC_MEMORY)) return 0; |
| dc->u.x.drawable = bmp->pixmap; |
| dc->w.DCSizeX = bmp->bitmap.bmWidth; |
| dc->w.DCSizeY = bmp->bitmap.bmHeight; |
| 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; |
| /* Re-select objects with changed depth */ |
| SelectObject( hdc, dc->w.hPen ); |
| SelectObject( hdc, dc->w.hBrush ); |
| } |
| return prevHandle; |
| } |
| |
| |
| /*********************************************************************** |
| * 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); |
| } |