1 /* 2 * RichEdit - Operation context functions 3 * 4 * Copyright 2004 by Krzysztof Foltman 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 19 */ 20 21 #include "editor.h" 22 23 void ME_InitContext(ME_Context *c, ME_TextEditor *editor, HDC hDC) 24 { 25 c->hDC = hDC; 26 c->editor = editor; 27 c->pt.x = 0; 28 c->pt.y = 0; 29 c->rcView = editor->rcFormat; 30 c->current_style = NULL; 31 c->orig_font = NULL; 32 if (hDC) { 33 c->dpi.cx = GetDeviceCaps(hDC, LOGPIXELSX); 34 c->dpi.cy = GetDeviceCaps(hDC, LOGPIXELSY); 35 } else { 36 c->dpi.cx = c->dpi.cy = 96; 37 } 38 if (editor->nAvailWidth) 39 c->nAvailWidth = ME_twips2pointsX(c, editor->nAvailWidth); 40 else 41 c->nAvailWidth = c->rcView.right - c->rcView.left; 42 } 43 44 void ME_DestroyContext(ME_Context *c) 45 { 46 select_style( c, NULL ); 47 if (c->hDC) ITextHost_TxReleaseDC( c->editor->texthost, c->hDC ); 48 } 49