358 lines
9.4 KiB
Groff
358 lines
9.4 KiB
Groff
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included
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.\" in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
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.\" Digital Equipment Corporation
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.\"
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.\" Portions Copyright \(co 1990, 1991 by
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.\" Tektronix, Inc.
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.\"
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.\" Permission to use, copy, modify and distribute this documentation for
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.\" any purpose and without fee is hereby granted, provided that the above
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.\" copyright notice appears in all copies and that both that copyright notice
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.\" and this permission notice appear in all copies, and that the names of
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.\" Digital and Tektronix not be used in in advertising or publicity pertaining
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.\" to this documentation without specific, written prior permission.
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.\" Digital and Tektronix makes no representations about the suitability
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.\" of this documentation for any purpose.
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.\" It is provided ``as is'' without express or implied warranty.
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.\"
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.\" $XFree86: xc/doc/man/X11/XReadBF.man,v 1.3 2001/02/07 22:35:20 tsi Exp $
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.\"
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.nf
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.\"
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..
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.ny0
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.TH XReadBitmapFile __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
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.SH NAME
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XReadBitmapFile, XReadBitmapFileData, XWriteBitmapFile, XCreatePixmapFromBitmapData, XCreateBitmapFromData \- manipulate bitmaps
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.SH SYNTAX
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.HP
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int XReadBitmapFile(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, char
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*\fIfilename\fP\^, unsigned int *\fIwidth_return\fP, unsigned int
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*\fIheight_return\fP\^, Pixmap *\fIbitmap_return\fP\^, int
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*\fIx_hot_return\fP, int *\fIy_hot_return\fP\^);
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.HP
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int XReadBitmapFileData(\^char *\fIfilename\fP\^, unsigned int
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*\fIwidth_return\fP, unsigned int *\fIheight_return\fP\^, unsigned char
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*\fIdata_return\fP\^, int *\fIx_hot_return\fP, int *\fIy_hot_return\fP\^);
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.HP
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int XWriteBitmapFile(\^Display *\fIdisplay\fP\^, char *\fIfilename\fP\^,
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Pixmap \fIbitmap\fP\^, unsigned int \fIwidth\fP, unsigned int \fIheight\fP\^,
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int \fIx_hot\fP, int \fIy_hot\fP\^);
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.HP
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Pixmap XCreatePixmapFromBitmapData\^(\^Display *\fIdisplay\fP\^, Drawable
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\fId\fP\^, char *\fIdata\fP\^, unsigned int \fIwidth\fP, unsigned int
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\fIheight\fP\^, unsigned long \fIfg\fP, unsigned int \fIbg\fP\^, unsigned int
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\fIdepth\fP\^);
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.HP
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Pixmap XCreateBitmapFromData(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^,
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char *\fIdata\fP\^, unsigned int \fIwidth\fP, unsigned int \fIheight\fP\^);
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.SH ARGUMENTS
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.IP \fIbitmap\fP 1i
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Specifies the bitmap.
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.IP \fIbitmap_return\fP 1i
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Returns the bitmap that is created.
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.ds Dr \ that indicates the screen
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.IP \fId\fP 1i
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Specifies the drawable\*(Dr.
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.IP \fIdata\fP 1i
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Specifies the data in bitmap format.
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.IP \fIdata\fP 1i
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Specifies the location of the bitmap data.
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.IP \fIdata_return\fP 1i
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Returns the bitmap data.
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.IP \fIdepth\fP 1i
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Specifies the depth of the pixmap.
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.IP \fIfg\fP 1i
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.br
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.ns
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.IP \fIbg\fP 1i
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Specify the foreground and background pixel values to use.
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.IP \fIfilename\fP 1i
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Specifies the file name to use.
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The format of the file name is operating-system dependent.
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.IP \fIwidth\fP 1i
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.br
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.ns
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.IP \fIheight\fP 1i
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Specify the width and height.
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.IP \fIwidth_return\fP 1i
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.br
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.ns
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.IP \fIheight_return\fP 1i
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Return the width and height values of the read in bitmap file.
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.IP \fIx_hot\fP 1i
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.br
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.ns
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.IP \fIy_hot\fP 1i
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Specify where to place the hotspot coordinates (or \-1,\-1 if none are present)
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in the file.
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.IP \fIx_hot_return\fP 1i
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.br
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.ns
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.IP \fIy_hot_return\fP 1i
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Return the hotspot coordinates.
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.SH DESCRIPTION
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The
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.ZN XReadBitmapFile
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function reads in a file containing a bitmap.
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The file is parsed in the encoding of the current locale.
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The ability to read other than the standard format
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is implementation-dependent.
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If the file cannot be opened,
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.ZN XReadBitmapFile
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returns
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.ZN BitmapOpenFailed .
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If the file can be opened but does not contain valid bitmap data,
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it returns
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.ZN BitmapFileInvalid .
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If insufficient working storage is allocated,
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it returns
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.ZN BitmapNoMemory .
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If the file is readable and valid,
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it returns
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.ZN BitmapSuccess .
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.LP
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.ZN XReadBitmapFile
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returns the bitmap's height and width, as read
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from the file, to width_return and height_return.
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It then creates a pixmap of the appropriate size,
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reads the bitmap data from the file into the pixmap,
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and assigns the pixmap to the caller's variable bitmap.
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The caller must free the bitmap using
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.ZN XFreePixmap
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when finished.
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If \fIname\fP_x_hot and \fIname\fP_y_hot exist,
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.ZN XReadBitmapFile
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returns them to x_hot_return and y_hot_return;
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otherwise, it returns \-1,\-1.
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.LP
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.ZN XReadBitmapFile
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can generate
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.ZN BadAlloc
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and
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.ZN BadDrawable
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errors.
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.LP
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The
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.ZN XReadBitmapFileData
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function reads in a file containing a bitmap, in the same manner as
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.ZN XReadBitmapFile ,
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but returns the data directly rather than creating a pixmap in the server.
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The bitmap data is returned in data_return; the client must free this
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storage when finished with it by calling
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.ZN XFree .
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The status and other return values are the same as for
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.ZN XReadBitmapFile .
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.LP
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The
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.ZN XWriteBitmapFile
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function writes a bitmap out to a file in the X Version 11 format.
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The name used in the output file is derived from the file name
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by deleting the directory prefix.
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The file is written in the encoding of the current locale.
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If the file cannot be opened for writing,
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it returns
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.ZN BitmapOpenFailed .
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If insufficient memory is allocated,
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.ZN XWriteBitmapFile
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returns
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.ZN BitmapNoMemory ;
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otherwise, on no error,
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it returns
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.ZN BitmapSuccess .
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If x_hot and y_hot are not \-1, \-1,
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.ZN XWriteBitmapFile
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writes them out as the hotspot coordinates for the bitmap.
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.LP
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.ZN XWriteBitmapFile
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can generate
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.ZN BadDrawable
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and
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.ZN BadMatch
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errors.
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.LP
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The
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.ZN XCreatePixmapFromBitmapData
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function creates a pixmap of the given depth and then does a bitmap-format
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.ZN XPutImage
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of the data into it.
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The depth must be supported by the screen of the specified drawable,
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or a
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.ZN BadMatch
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error results.
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.LP
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.ZN XCreatePixmapFromBitmapData
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can generate
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.ZN BadAlloc
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and
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.ZN BadMatch
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errors.
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.LP
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The
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.ZN XCreateBitmapFromData
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function allows you to include in your C program (using
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.ZN #include )
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a bitmap file that was written out by
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.ZN XWriteBitmapFile
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(X version 11 format only) without reading in the bitmap file.
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The following example creates a gray bitmap:
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.LP
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.Ds 0
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\&#include "gray.bitmap"
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.sp 6p
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Pixmap bitmap;
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bitmap = XCreateBitmapFromData(display, window, gray_bits, gray_width, gray_height);
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.De
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.LP
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If insufficient working storage was allocated,
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.ZN XCreateBitmapFromData
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returns
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.ZN None .
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It is your responsibility to free the
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bitmap using
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.ZN XFreePixmap
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when finished.
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.LP
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.ZN XCreateBitmapFromData
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can generate a
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.ZN BadAlloc
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error.
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.SH DIAGNOSTICS
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.TP 1i
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.ZN BadAlloc
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The server failed to allocate the requested resource or server memory.
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.TP 1i
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.ZN BadDrawable
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A value for a Drawable argument does not name a defined Window or Pixmap.
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.TP 1i
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.ZN BadMatch
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An
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.ZN InputOnly
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window is used as a Drawable.
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.SH "SEE ALSO"
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XCreatePixmap(3X11),
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XPutImage(3X11)
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.br
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\fI\*(xL\fP
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