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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>XmHTML Programmers Manual: XmImage Structure</TITLE>
<META HTTP-EQUIV="Keywords" CONTENT="XmHTML, HTML, Motif, Widget, eXode, XntHelp, Linux">
<META HTTP-EQUIV="Reply-to" CONTENT="ripley@xs4all.nl">
<META HTTP-EQUIV="Description"
CONTENT = "XmImage structure - XmImage Image definition.">
<META NAME="Author" CONTENT="Koen D'Hondt">
<META NAME="Copyright" content="1995-1997 by Ripley Software Development">
<META NAME="Source" content="$Source$">
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<h3><font face="helvetica,arial">Name</font></h3>
<blockquote>
XmImage structure - XmImage Image definition.
</blockquote>
<h3><font face="helvetica,arial">Description</font></h3>
<blockquote>
A XmImage structure is returned by the XmImageCreate and
XmImageCreateFromInfo convenience routines.
<p>
See XmImageInfo(3X) for more information about the dispose field in the
XmImageFrame structure.
<p>
The pixmap and clip fields in the XmImage structure can be used
directly in calls to XCopyArea(3X).
</blockquote>
<h3><font face="helvetica,arial">Structures</font></h3>
<pre>
/* XmImage definition */
typedef struct{
String file; /* originating file */
unsigned char type; /* image type, see XmHTMLImageGetType */
Pixmap pixmap; /* actual image */
Pixmap clip; /* for transparant pixmaps */
unsigned int options; /* image option bits */
int width; /* current image width, in pixels */
int height; /* current image height, in pixels */
int ncolors; /* no of colors in this image */
int scolors; /* specified no of colors */
int swidth; /* image width as read from image */
int sheight; /* image height as read from image */
int depth; /* depth of this image */
int npixels; /* no of really allocated pixels */
GC gc; /* graphics context for rendering */
/* animation data */
XmImageFrame *frames; /* array of animation frames */
int nframes; /* no of frames following */
int current_frame; /* current frame count */
int current_loop; /* current loop count */
int loop_count; /* maximum loop count */
XtIntervalId proc_id; /* timer id for animations */
Widget w; /* image owner */
XtAppContext context; /* Application context for animations */
/* private data */
struct _XColorContext *xcc; /* a lot of visual info */
}XmImage;
/* XmImageFrame: animation frame definition */
typedef struct{
int x; /* x position in logical screen */
int y; /* y position in logical screen */
int w; /* width of this particular frame */
int h; /* height of this particular frame */
int timeout; /* timeout for the next frame */
unsigned char dispose; /* previous frame disposal method */
Pixmap pixmap; /* actual image */
Pixmap clip; /* image clipmask */
Pixmap prev_state; /* previous screen state */
}XmImageFrame;
/*
* XmImage options bits (defined in XmHTMLP.h).
* There are more options defined but they are private to XmHTML.
* The IMG_ISANIM and IMG_HASSTATE bits may not be touched when
* they have been set.
*/
#define IMG_ISANIM (1L<<4) /* is an animation */
#define IMG_FRAMEREFRESH (1L<<5) /* animation is running */
#define IMG_HASSTATE (1L<<7) /* current state pixmap present */
/* XmImage configuration flags */
#define ImageFSDither (1L<<1) /* Floyd-Steinberg error correction */
#define ImageCreateGC (1L<<2) /* create gc for image */
#define ImageWorkSpace (1L<<3) /* create animation workspace */
#define ImageClipmask (1L<<4) /* create clipmask */
#define ImageBackground (1L<<5) /* substitute background pixel */
#define ImageQuantize (1L<<6) /* quantize image */
#define ImageMaxColors (1L<<7) /* sets maximum colors */
#define ImageGifDecodeProc (1L<<8) /* gif lzw decoder function */
#define ImageGifzCmd (1L<<9) /* gif lzw uncompress command */
#define ImageFrameSelect (1L<<10)/* frame selection */
#define ImageScreenGamma (1L<<11)/* gamma correction. JPEG/ PNG only */
/* XmImage configuration */
typedef struct{
unsigned long flags; /* XmImage configuration flags, */
int ncolors; /* desired number of colors */
int which_frames; /* animation frames selection flag */
int bg_color; /* transparent pixel */
String z_cmd; /* gif uncompress command */
XmImageGifProc gif_proc; /* external gif decoder */
float gamma; /* gamma correction. JPEG/PNG only */
}XmImageConfig;
</pre>
<h3><font face="helvetica,arial">See Also</font></h3>
<blockquote>
XmHTML(3X), XmImageCreate(3X), XmImageCreateFromInfo(3X),
XmImageDestroy(3X), XmImageInfo(3X), XmHTMLGIFStream(3X)
</blockquote>
<hr noshade size="2" width="25%">
<i><font size="-1">
XmHTML, October 7, 1997
</font></i>
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