зеркало из https://github.com/mozilla/gecko-dev.git
387 строки
9.3 KiB
C
387 строки
9.3 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/*----------------------------------------------------------------------*/
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/* */
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/* Name: <Xfe/PixmapUtil.c> */
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/* Description: Xfe widgets pixmap utilities. */
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/* Author: Ramiro Estrugo <ramiro@netscape.com> */
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/* */
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/*----------------------------------------------------------------------*/
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#include <Xfe/XfeP.h>
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#define MESSAGE1 "The pixmap needs to have the same depth as the widget."
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#define MESSAGE2 "Cannot obtain geometry for pixmap."
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/*----------------------------------------------------------------------*/
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/* */
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/* Double buffer global variables */
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/* */
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/*----------------------------------------------------------------------*/
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static Pixmap _pixmap_buffer = XmUNSPECIFIED_PIXMAP;
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static Cardinal _pixmap_buffer_depth = 0;
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static Dimension _pixmap_buffer_width = 0;
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static Dimension _pixmap_buffer_height = 0;
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/*----------------------------------------------------------------------*/
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static Pixmap BufferCreate (Widget,Dimension,Dimension);
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static void BufferUpdate (Widget,Pixmap,
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Dimension,Dimension);
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static Boolean BufferCheck (Widget);
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static void BufferFree (Widget);
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/*----------------------------------------------------------------------*/
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/* */
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/* Double buffer utilities */
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/* */
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/*----------------------------------------------------------------------*/
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Pixmap
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_XfePixmapBufferAllocate(Widget w)
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{
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Pixmap buffer = XmUNSPECIFIED_PIXMAP;
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assert( w != NULL );
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/* Check whether a buffer already exists */
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if (_XfePixmapGood(_pixmap_buffer))
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{
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assert( _pixmap_buffer_depth == _XfeDepth(w));
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/* Check whether this widget can use the buffer */
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if (BufferCheck(w))
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{
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buffer = _pixmap_buffer;
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}
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else
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{
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Dimension new_width = XfeMax(_XfeWidth(w),_pixmap_buffer_width);
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Dimension new_height = XfeMax(_XfeHeight(w),_pixmap_buffer_height);
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BufferFree(w);
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buffer = BufferCreate(w,new_width,new_height);
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assert( _XfePixmapGood(buffer) );
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BufferUpdate(w,buffer,new_width,new_height);
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}
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}
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/* Create a buffer pixmap for the first time */
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else
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{
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buffer = BufferCreate(w,_XfeWidth(w),_XfeHeight(w));
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assert( _XfePixmapGood(buffer) );
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BufferUpdate(w,buffer,_XfeWidth(w),_XfeHeight(w));
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}
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return buffer;
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}
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/*----------------------------------------------------------------------*/
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void
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_XfePixmapBufferRelease(Widget w,Pixmap buffer)
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{
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}
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/*----------------------------------------------------------------------*/
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Pixmap
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_XfePixmapBufferAccess()
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{
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return _pixmap_buffer;
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}
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/*----------------------------------------------------------------------*/
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static void
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BufferFree(Widget w)
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{
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assert( _XfePixmapGood(_pixmap_buffer) );
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/* Free the buffer pixmap */
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XFreePixmap(XtDisplay(w),_pixmap_buffer);
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}
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/*----------------------------------------------------------------------*/
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static Pixmap
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BufferCreate(Widget w,Dimension width,Dimension height)
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{
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assert( w != NULL );
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return XCreatePixmap(XtDisplay(w),
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DefaultRootWindow(XtDisplay(w)),
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width,
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height,
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_XfeDepth(w));
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}
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/*----------------------------------------------------------------------*/
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static void
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BufferUpdate(Widget w,Pixmap buffer,Dimension width,Dimension height)
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{
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assert( _XfePixmapGood(buffer) );
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_pixmap_buffer = buffer;
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_pixmap_buffer_depth = _XfeDepth(w);
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_pixmap_buffer_width = width;
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_pixmap_buffer_height = height;
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}
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/*----------------------------------------------------------------------*/
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static Boolean
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BufferCheck(Widget w)
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{
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assert( w != NULL );
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return ((_XfeWidth(w) <= _pixmap_buffer_width) &&
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(_XfeHeight(w) <= _pixmap_buffer_height) &&
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(_XfeDepth(w) == _pixmap_buffer_depth));
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}
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/* */
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/* Pixmap */
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/* */
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/*----------------------------------------------------------------------*/
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Boolean
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XfePixmapExtent(Display * dpy,
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Pixmap pixmap,
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Dimension * width,
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Dimension * height,
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Cardinal * depth)
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{
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Boolean result = False;
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assert( dpy != NULL );
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if (_XfePixmapGood(pixmap))
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{
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unsigned int borderWidth;
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Window rootWindow;
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int x;
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int y;
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unsigned int pixmap_width;
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unsigned int pixmap_height;
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unsigned int pixmap_depth;
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/* Query Server for Pixmap info */
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result = XGetGeometry(dpy,pixmap,&rootWindow,&x,&y,
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&pixmap_width,&pixmap_height,
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&borderWidth,&pixmap_depth);
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/* Verify that the pixmap extent was obtained */
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if(result)
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{
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/* Assign the required components */
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if (width)
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{
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*width = pixmap_width;
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}
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if (height)
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{
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*height = pixmap_height;
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}
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if (depth)
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{
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*depth = pixmap_depth;
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}
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}
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else
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{
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/* Make them NULL as an extra warning */
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if (width)
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{
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*width = 0;
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}
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if (height)
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{
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*height = 0;
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}
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if (depth)
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{
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*depth = 0;
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}
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}
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}
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return result;
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}
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/*----------------------------------------------------------------------*/
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Boolean
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XfePixmapGood(Pixmap pixmap)
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{
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return _XfePixmapGood(pixmap);
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}
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/* */
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/* Stipple / Tile functions */
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/* */
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/*----------------------------------------------------------------------*/
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Pixmap
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XfeInsensitiveTile(Screen * screen,int depth,Pixel fg,Pixel bg)
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{
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return XmGetPixmapByDepth(screen,"50_foreground",fg,bg,depth);
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}
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/*----------------------------------------------------------------------*/
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Pixmap
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XfeInsensitiveStipple(Screen * screen,int depth,Pixel fg,Pixel bg)
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{
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return XmGetPixmapByDepth(screen,"50_foreground",fg,bg,depth);
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}
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/*----------------------------------------------------------------------*/
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void
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XfePixmapClear(Display * dpy,
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Pixmap pixmap,
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GC gc,
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Dimension width,
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Dimension height)
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{
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assert( dpy != NULL );
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assert( _XfePixmapGood(pixmap) );
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assert( gc != None );
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assert( width > 0 );
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assert( height > 0 );
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XFillRectangle(dpy,pixmap,gc,0,0,width,height);
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}
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/*----------------------------------------------------------------------*/
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Pixmap
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XfePixmapCheck(Widget w,
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Pixmap pixmap,
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Dimension * width_out,
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Dimension * height_out)
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{
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Pixmap result = XmUNSPECIFIED_PIXMAP;
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Dimension width = 0;
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Dimension height = 0;
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/* Check the pixmap only if it is good */
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if (_XfePixmapGood(pixmap))
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{
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Cardinal depth;
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if (XfePixmapExtent(XtDisplay(w),
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pixmap,
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&width,
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&height,
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&depth))
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{
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/* Make sure the pixmap's depth matches the widget */
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if (_XfeDepth(w) == depth)
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{
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result = pixmap;
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}
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else
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{
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_XfeWarning(w,MESSAGE1);
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}
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}
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else
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{
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_XfeWarning(w,MESSAGE2);
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}
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}
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if (width_out)
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{
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*width_out = width;
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}
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if (height_out)
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{
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*height_out = height;
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}
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return pixmap;
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}
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/* */
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/* Preparation utlities */
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/* */
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/*----------------------------------------------------------------------*/
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/* extern */ void
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_XfePixmapPrepare(Widget w,
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Pixmap * pixmap_in_out,
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Dimension * width_out,
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Dimension * height_out,
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String name)
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{
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Dimension width = 0;
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Dimension height = 0;
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/* assert( width_out != NULL ); */
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/* assert( height_out != NULL ); */
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assert( pixmap_in_out != NULL );
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assert( _XfeIsAlive(w) );
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/* Obtain geometry info for the pixmap if its good */
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if (_XfePixmapGood(*pixmap_in_out))
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{
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Cardinal depth;
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if (XfePixmapExtent(XtDisplay(w),
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*pixmap_in_out,
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&width,
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&height,
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&depth))
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{
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/* Make sure the pixmap's depth matches the widget */
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if (_XfeDepth(w) != depth)
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{
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width = 0;
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height = 0;
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*pixmap_in_out = XmUNSPECIFIED_PIXMAP;
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_XfeArgWarning(w,MESSAGE1,name);
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}
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}
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/* Could not get geometry for the pixmap */
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else
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{
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*pixmap_in_out = XmUNSPECIFIED_PIXMAP;
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_XfeArgWarning(w,MESSAGE2,name);
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}
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}
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/* Assign the dimensions if needed */
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if (width_out)
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{
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*width_out = width;
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}
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if (height_out)
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{
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*height_out = height;
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}
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}
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/*----------------------------------------------------------------------*/
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