/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public License * Version 1.0 (the "NPL"); you may not use this file except in * compliance with the NPL. You may obtain a copy of the NPL at * http://www.mozilla.org/NPL/ * * Software distributed under the NPL is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL * for the specific language governing rights and limitations under the * NPL. * * The Initial Developer of this code under the NPL is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All Rights * Reserved. */ /*-----------------------------------------*/ /* */ /* Name: */ /* Description: Xfe widgets pixmap utilities. */ /* Author: Ramiro Estrugo */ /* */ /*----------------------------------------------------------------------*/ #include #define MESSAGE1 "The pixmap needs to have the same depth as the widget." #define MESSAGE2 "Cannot obtain geometry for pixmap." /*----------------------------------------------------------------------*/ /* */ /* Double buffer global variables */ /* */ /*----------------------------------------------------------------------*/ static Pixmap _pixmap_buffer = XmUNSPECIFIED_PIXMAP; static Cardinal _pixmap_buffer_depth = 0; static Dimension _pixmap_buffer_width = 0; static Dimension _pixmap_buffer_height = 0; /*----------------------------------------------------------------------*/ static Pixmap BufferCreate (Widget,Dimension,Dimension); static void BufferUpdate (Widget,Pixmap, Dimension,Dimension); static Boolean BufferCheck (Widget); static void BufferFree (Widget); /*----------------------------------------------------------------------*/ /* */ /* Double buffer utilities */ /* */ /*----------------------------------------------------------------------*/ Pixmap _XfePixmapBufferAllocate(Widget w) { Pixmap buffer = XmUNSPECIFIED_PIXMAP; assert( w != NULL ); /* Check whether a buffer already exists */ if (_XfePixmapGood(_pixmap_buffer)) { assert( _pixmap_buffer_depth == _XfeDepth(w)); /* Check whether this widget can use the buffer */ if (BufferCheck(w)) { buffer = _pixmap_buffer; } else { Dimension new_width = XfeMax(_XfeWidth(w),_pixmap_buffer_width); Dimension new_height = XfeMax(_XfeHeight(w),_pixmap_buffer_height); BufferFree(w); buffer = BufferCreate(w,new_width,new_height); assert( _XfePixmapGood(buffer) ); BufferUpdate(w,buffer,new_width,new_height); } } /* Create a buffer pixmap for the first time */ else { buffer = BufferCreate(w,_XfeWidth(w),_XfeHeight(w)); assert( _XfePixmapGood(buffer) ); BufferUpdate(w,buffer,_XfeWidth(w),_XfeHeight(w)); } return buffer; } /*----------------------------------------------------------------------*/ void _XfePixmapBufferRelease(Widget w,Pixmap buffer) { } /*----------------------------------------------------------------------*/ Pixmap _XfePixmapBufferAccess() { return _pixmap_buffer; } /*----------------------------------------------------------------------*/ static void BufferFree(Widget w) { assert( _XfePixmapGood(_pixmap_buffer) ); /* Free the buffer pixmap */ XFreePixmap(XtDisplay(w),_pixmap_buffer); } /*----------------------------------------------------------------------*/ static Pixmap BufferCreate(Widget w,Dimension width,Dimension height) { assert( w != NULL ); return XCreatePixmap(XtDisplay(w), DefaultRootWindow(XtDisplay(w)), width, height, _XfeDepth(w)); } /*----------------------------------------------------------------------*/ static void BufferUpdate(Widget w,Pixmap buffer,Dimension width,Dimension height) { assert( _XfePixmapGood(buffer) ); _pixmap_buffer = buffer; _pixmap_buffer_depth = _XfeDepth(w); _pixmap_buffer_width = width; _pixmap_buffer_height = height; } /*----------------------------------------------------------------------*/ static Boolean BufferCheck(Widget w) { assert( w != NULL ); return ((_XfeWidth(w) <= _pixmap_buffer_width) && (_XfeHeight(w) <= _pixmap_buffer_height) && (_XfeDepth(w) == _pixmap_buffer_depth)); } /*----------------------------------------------------------------------*/ /*----------------------------------------------------------------------*/ /* */ /* Pixmap */ /* */ /*----------------------------------------------------------------------*/ Boolean XfePixmapExtent(Display * dpy, Pixmap pixmap, Dimension * width, Dimension * height, Cardinal * depth) { Boolean result = False; assert( dpy != NULL ); if (_XfePixmapGood(pixmap)) { unsigned int borderWidth; Window rootWindow; int x; int y; unsigned int pixmap_width; unsigned int pixmap_height; unsigned int pixmap_depth; /* Query Server for Pixmap info */ result = XGetGeometry(dpy,pixmap,&rootWindow,&x,&y, &pixmap_width,&pixmap_height, &borderWidth,&pixmap_depth); /* Verify that the pixmap extent was obtained */ if(result) { /* Assign the required components */ if (width) { *width = pixmap_width; } if (height) { *height = pixmap_height; } if (depth) { *depth = pixmap_depth; } } else { /* Make them NULL as an extra warning */ if (width) { *width = 0; } if (height) { *height = 0; } if (depth) { *depth = 0; } } } return result; } /*----------------------------------------------------------------------*/ Boolean XfePixmapGood(Pixmap pixmap) { return _XfePixmapGood(pixmap); } /*----------------------------------------------------------------------*/ /*----------------------------------------------------------------------*/ /* */ /* Stipple / Tile functions */ /* */ /*----------------------------------------------------------------------*/ Pixmap XfeInsensitiveTile(Screen * screen,int depth,Pixel fg,Pixel bg) { return XmGetPixmapByDepth(screen,"50_foreground",fg,bg,depth); } /*----------------------------------------------------------------------*/ Pixmap XfeInsensitiveStipple(Screen * screen,int depth,Pixel fg,Pixel bg) { return XmGetPixmapByDepth(screen,"50_foreground",fg,bg,depth); } /*----------------------------------------------------------------------*/ void XfePixmapClear(Display * dpy, Pixmap pixmap, GC gc, Dimension width, Dimension height) { assert( dpy != NULL ); assert( _XfePixmapGood(pixmap) ); assert( gc != None ); assert( width > 0 ); assert( height > 0 ); XFillRectangle(dpy,pixmap,gc,0,0,width,height); } /*----------------------------------------------------------------------*/ Pixmap XfePixmapCheck(Widget w, Pixmap pixmap, Dimension * width_out, Dimension * height_out) { Pixmap result = XmUNSPECIFIED_PIXMAP; Dimension width = 0; Dimension height = 0; /* Check the pixmap only if it is good */ if (_XfePixmapGood(pixmap)) { Cardinal depth; if (XfePixmapExtent(XtDisplay(w), pixmap, &width, &height, &depth)) { /* Make sure the pixmap's depth matches the widget */ if (_XfeDepth(w) == depth) { result = pixmap; } else { _XfeWarning(w,MESSAGE1); } } else { _XfeWarning(w,MESSAGE2); } } if (width_out) { *width_out = width; } if (height_out) { *height_out = height; } return pixmap; } /*----------------------------------------------------------------------*/ /*----------------------------------------------------------------------*/ /* */ /* Preparation utlities */ /* */ /*----------------------------------------------------------------------*/ /* extern */ void _XfePixmapPrepare(Widget w, Pixmap * pixmap_in_out, Dimension * width_out, Dimension * height_out, String name) { Dimension width = 0; Dimension height = 0; /* assert( width_out != NULL ); */ /* assert( height_out != NULL ); */ assert( pixmap_in_out != NULL ); assert( _XfeIsAlive(w) ); /* Obtain geometry info for the pixmap if its good */ if (_XfePixmapGood(*pixmap_in_out)) { Cardinal depth; if (XfePixmapExtent(XtDisplay(w), *pixmap_in_out, &width, &height, &depth)) { /* Make sure the pixmap's depth matches the widget */ if (_XfeDepth(w) != depth) { width = 0; height = 0; *pixmap_in_out = XmUNSPECIFIED_PIXMAP; _XfeArgWarning(w,MESSAGE1,name); } } /* Could not get geometry for the pixmap */ else { *pixmap_in_out = XmUNSPECIFIED_PIXMAP; _XfeArgWarning(w,MESSAGE2,name); } } /* Assign the dimensions if needed */ if (width_out) { *width_out = width; } if (height_out) { *height_out = height; } } /*----------------------------------------------------------------------*/