/* * CreateViewBitmap - create the bitmap on the screen (with the background * color as it should be, etc.) * - the caller is responsible for deleting the bitmap */ HBITMAP CreateViewBitmap( img_node *mdi_node ) { WPI_PRES pres; WPI_PRES xorandpres; WPI_PRES mempres; WPI_PRES freehandpres; HDC xoranddc; HDC memdc; HBITMAP newbitmap; HBITMAP oldxorandbitmap; HBITMAP oldbitmap; HBRUSH brush; HBRUSH oldbrush; img_node *node; COLORREF bkcolor; if( mdi_node != NULL ) { node = mdi_node; } else { node = GetCurrentNode(); if( node == NULL ) { return( NULL ); } } pres = _wpi_getpres( HWND_DESKTOP ); xorandpres = _wpi_createcompatiblepres( pres, Instance, &xoranddc ); mempres = _wpi_createcompatiblepres( pres, Instance, &memdc ); newbitmap = _wpi_createcompatiblebitmap( pres, node->width, node->height ); _wpi_releasepres( HWND_DESKTOP, pres ); _wpi_torgbmode( mempres ); _wpi_torgbmode( xorandpres ); bkcolor = GetViewBkColor(); #ifdef __OS2_PM__ _wpi_preparemono( mempres, BLACK, bkcolor ); #endif oldbitmap = _wpi_selectobject( mempres, newbitmap ); brush = _wpi_createsolidbrush( bkcolor ); oldbrush = _wpi_selectobject( mempres, brush ); _wpi_patblt( mempres, 0, 0, node->width, node->height, PATCOPY ); _wpi_selectobject( mempres, oldbrush ); _wpi_deletebrush( brush ); GetFreeHandPresentationSpaces( NULL, &freehandpres, NULL ); if( freehandpres == (WPI_PRES)NULL ) { oldxorandbitmap = _wpi_selectobject( xorandpres, node->handbitmap ); _wpi_bitblt( mempres, 0, 0, node->width, node->height, xorandpres, 0, 0, SRCAND ); _wpi_selectobject( xorandpres, oldxorandbitmap ); } else { _wpi_bitblt( mempres, 0, 0, node->width, node->height, freehandpres, 0, 0, SRCAND ); } GetFreeHandPresentationSpaces( NULL, NULL, &freehandpres ); if( freehandpres == (WPI_PRES)NULL ) { oldxorandbitmap = _wpi_selectobject( xorandpres, node->hxorbitmap ); _wpi_bitblt( mempres, 0, 0, node->width, node->height, xorandpres, 0, 0, SRCINVERT ); _wpi_selectobject( xorandpres, oldxorandbitmap ); } else { _wpi_bitblt( mempres, 0, 0, node->width, node->height, freehandpres, 0, 0, SRCINVERT ); } _wpi_deletecompatiblepres( xorandpres, xoranddc ); _wpi_selectobject( mempres, oldbitmap ); _wpi_deletecompatiblepres( mempres, memdc ); return( newbitmap ); } /* CreateViewBitmap */
/* * FlipImage - flip the image along either the x-axis or the y-axis */ void FlipImage( WORD whichway ) { img_node *node; short width; short height; short destwidth; short destheight; short new_left; short new_top; WPI_RECT dims; HBITMAP xorflip; HBITMAP oldflip; HBITMAP oldbitmap; HBITMAP andflip; WPI_PRES pres; WPI_PRES mempres; HDC memdc; WPI_PRES flippres; HDC flipdc; HCURSOR prevcursor; IMGED_DIM bottom; IMGED_DIM left; IMGED_DIM right; IMGED_DIM top; node = GetCurrentNode(); if( node == NULL ) { return; } PrintHintTextByID( WIE_FLIPPINGIMAGE, NULL ); prevcursor = _wpi_setcursor( _wpi_getsyscursor( IDC_WAIT ) ); if( !DoesRectExist( &dims ) ) { _wpi_setwrectvalues( &dims, 0, 0, (IMGED_DIM)node->width, (IMGED_DIM)node->height ); } width = (short)_wpi_getwidthrect( dims ); height = (short)_wpi_getheightrect( dims ); pres = _wpi_getpres( HWND_DESKTOP ); if( node->bitcount == 1 ) { xorflip = _wpi_createbitmap( width, height, 1, 1, NULL ); } else { #if 1 xorflip = _wpi_createcompatiblebitmap( pres, width, height ); #else xorflip = _wpi_createbitmap( width, height, ColorPlanes, BitsPerPixel, NULL ); #endif } andflip = _wpi_createbitmap( width, height, 1, 1, NULL ); mempres = _wpi_createcompatiblepres( pres, Instance, &memdc ); flippres = _wpi_createcompatiblepres( pres, Instance, &flipdc ); _wpi_releasepres( HWND_DESKTOP, pres ); _wpi_getrectvalues( dims, &left, &top, &right, &bottom ); _wpi_preparemono( flippres, BLACK, WHITE ); oldbitmap = _wpi_selectobject( mempres, node->hxorbitmap ); oldflip = _wpi_selectobject( flippres, xorflip ); _wpi_bitblt( flippres, 0, 0, width, height, mempres, left, top, SRCCOPY ); _wpi_selectobject( mempres, oldbitmap ); _wpi_selectobject( flippres, oldflip ); oldbitmap = _wpi_selectobject( mempres, node->handbitmap ); oldflip = _wpi_selectobject( flippres, andflip ); _wpi_bitblt( flippres, 0, 0, width, height, mempres, left, top, SRCCOPY ); if( whichway == IMGED_FLIPVERT ) { destwidth = -1 * width; new_left = right - 1; new_top = top; destheight = height; } else { destwidth = width; new_left = left; new_top = bottom - 1; destheight = -1 * height; } _wpi_stretchblt( mempres, new_left, new_top, destwidth, destheight, flippres, 0, 0, width, height, SRCCOPY ); _wpi_selectobject( mempres, oldbitmap ); oldbitmap = _wpi_selectobject( mempres, node->hxorbitmap ); _wpi_selectobject( flippres, oldflip ); oldflip = _wpi_selectobject( flippres, xorflip ); _wpi_stretchblt( mempres, new_left, new_top, destwidth, destheight, flippres, 0, 0, width, height, SRCCOPY ); _wpi_selectobject( mempres, oldbitmap ); _wpi_selectobject( flippres, oldflip ); _wpi_deleteobject( xorflip ); _wpi_deleteobject( andflip ); _wpi_deletecompatiblepres( mempres, memdc ); _wpi_deletecompatiblepres( flippres, flipdc ); InvalidateRect( node->viewhwnd, NULL, TRUE ); if( !DoKeepRect() ) { SetRectExists( FALSE ); } RecordImage( node->hwnd ); BlowupImage( node->hwnd, NULL ); if( whichway == IMGED_FLIPHORZ ) { PrintHintTextByID( WIE_IMAGEREFLECTEDH, NULL ); } else { PrintHintTextByID( WIE_IMAGEREFLECTEDV, NULL ); } _wpi_setcursor( prevcursor ); } /* FlipImage */