зеркало из https://github.com/mozilla/gecko-dev.git
353 строки
13 KiB
C++
353 строки
13 KiB
C++
/* -*- 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 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
/* if.h --- Top-level image library internal routines
|
|
*
|
|
* $Id: if_struct.h,v 1.16 2000/10/28 22:15:49 warren%netscape.com Exp $
|
|
*/
|
|
|
|
#ifndef _if_h
|
|
#ifndef _ifstruct_h
|
|
#define _ifstruct_h
|
|
|
|
#define M12N
|
|
|
|
#define IL_INTERNAL
|
|
|
|
#include "prtypes.h"
|
|
#include "prlog.h"
|
|
#include "prmem.h"
|
|
#include "plstr.h"
|
|
#include "prtime.h"
|
|
#include "prlong.h"
|
|
#include "nsIPresContext.h"
|
|
|
|
#include "nsIImgDecoder.h"
|
|
|
|
typedef struct _IL_GroupContext IL_GroupContext;
|
|
typedef struct _IL_ImageReq IL_ImageReq;
|
|
typedef struct il_context_list il_context_list;
|
|
typedef struct il_container_list il_container_list;
|
|
typedef struct il_container_struct il_container;
|
|
|
|
#include "il_icons.h" /* Image icons. */
|
|
#include "libimg.h" /* Public API to Image Library. */
|
|
#include "il_utilp.h" /* Private header for colormap/colorspaces. */
|
|
#include "il_util.h" /* Public API for colormaps/colorspaces. */
|
|
#include "ilINetContext.h"
|
|
#include "ilIURL.h"
|
|
#include "ilINetReader.h"
|
|
#include "ilIImageRenderer.h"
|
|
|
|
#include "il.h"
|
|
|
|
#ifdef XP_WIN
|
|
#define _USD 1 /* scanlines upside-down */
|
|
#endif
|
|
|
|
/* For debugging counts of loading, looping and aborted images, needed for
|
|
group observer notification. */
|
|
/* #define DEBUG_GROUP_OBSERVER */
|
|
|
|
#ifdef DEBUG
|
|
extern int il_debug;
|
|
extern PRLogModuleInfo *il_log_module;
|
|
#define ILTRACE(l,t) { if(il_debug>l) {PR_LOG(il_log_module, 1, t);} }
|
|
#else
|
|
#define ILTRACE(l,t) {}
|
|
#endif
|
|
|
|
#define FREE_IF_NOT_NULL(x) do {if (x) {PR_FREEIF(x); (x) = NULL;}} while (0)
|
|
|
|
#include "prtypes.h" /* for IS_LITTLE_ENDIAN / IS_BIG_ENDIAN */
|
|
|
|
/* The imagelib labels bits in a 32-bit word from 31 on the left to 0 on the right.
|
|
This macro performs the necessary conversion to make that definition work on
|
|
little-endian platforms */
|
|
#if defined(IS_LITTLE_ENDIAN)
|
|
# define M32(bit) ((bit) ^ 0x18)
|
|
#elif defined(IS_BIG_ENDIAN)
|
|
# define M32(bit) (bit)
|
|
#else
|
|
ENDIANNESS UNKNOWN!
|
|
#endif
|
|
|
|
/* Don't change these unless you know what you're doing or you will
|
|
break 16-bit binaries. */
|
|
#define MAX_IMAGE_WIDTH 8000
|
|
#define MAX_IMAGE_HEIGHT 8000
|
|
|
|
/* MAX and MIN are almost universal, but be paranoid and use our
|
|
definitions. */
|
|
#ifdef MAX
|
|
#undef MAX
|
|
#endif
|
|
#define MAX(x, y) ((x) > (y) ? (x) : (y))
|
|
|
|
#ifdef MIN
|
|
#undef MIN
|
|
#endif
|
|
#define MIN(x, y) ((x) < (y) ? (x) : (y))
|
|
|
|
/* Last output pass of an image */
|
|
#define IL_FINAL_PASS -1
|
|
|
|
/* Nature of the conversion from source image colorspace to target image
|
|
colorspace. */
|
|
typedef enum _IL_ConversionType {
|
|
IL_TrueToTrue = 0x09,
|
|
IL_TrueToPseudo = 0x0a,
|
|
IL_TrueToGrey = 0x0c,
|
|
IL_PseudoToTrue = 0x11,
|
|
IL_PseudoToPseudo = 0x12,
|
|
IL_PseudoToGrey = 0x14,
|
|
IL_GreyToTrue = 0x21,
|
|
IL_GreyToPseudo = 0x22,
|
|
IL_GreyToGrey = 0x24
|
|
} IL_ConversionType;
|
|
|
|
typedef void (*il_converter)(il_container *ic, const PRUint8 *mask,
|
|
const PRUint8 *sp, int x_offset,
|
|
int num, void XP_HUGE *out);
|
|
|
|
enum icstate {
|
|
IC_VIRGIN = 0x00, /* Newly-created container */
|
|
IC_START = 0x01, /* Requested stream from netlib, but no data yet */
|
|
IC_STREAM = 0x02, /* Stream opened, but insufficient data
|
|
received to determine image size */
|
|
IC_SIZED = 0x04, /* Image size determined - still loading */
|
|
IC_MULTI = 0x06, /* Same as IC_SIZED, but for second or
|
|
subsequent images in multipart MIME */
|
|
IC_NOCACHE = 0x11, /* Image deferred for loading later */
|
|
IC_COMPLETE = 0x20, /* Image loaded - no errors */
|
|
IC_BAD = 0x21, /* Corrupt or illegal image data */
|
|
IC_INCOMPLETE = 0x22, /* Partially loaded image data */
|
|
IC_MISSING = 0x23, /* No such file on server */
|
|
IC_ABORT_PENDING= 0x24 /* Image download abort in progress */
|
|
};
|
|
|
|
/* Still receiving data from the netlib ? */
|
|
#define IMAGE_CONTAINER_ACTIVE(ic) ((ic)->state <= IC_MULTI)
|
|
|
|
/* Force memory cache to be flushed ? */
|
|
#define FORCE_RELOAD(reload_method) \
|
|
(reload_method = DONT_USE_IMG_CACHE)
|
|
|
|
/* Simple list of image contexts. */
|
|
struct il_context_list {
|
|
IL_GroupContext *img_cx;
|
|
struct il_context_list *next;
|
|
};
|
|
|
|
/* Simple list of image containers. */
|
|
struct il_container_list {
|
|
il_container *ic;
|
|
struct il_container_list *next;
|
|
};
|
|
|
|
|
|
/* There is one il_container per real image */
|
|
struct il_container_struct {
|
|
il_container *next; /* Cache bidirectional linked list */
|
|
il_container *prev;
|
|
|
|
ilIURL *url;
|
|
char *url_address; /* Same as url->address if there is no redirection*/
|
|
|
|
PRUint32 hash;
|
|
PRUint32 urlhash;
|
|
|
|
enum icstate state;
|
|
int sized;
|
|
|
|
int moz_type; /* TYPE_CHROME, etc. */
|
|
|
|
int is_alone; /* only image on a page */
|
|
int is_in_use; /* Used by some context */
|
|
int32 loop_count; /* Remaining number of times to repeat image,
|
|
-1 means loop infinitely */
|
|
int is_looping; /* TRUE if this is the second or subsequent
|
|
pass of an animation. */
|
|
nsImageAnimation animate_request; /* Set in nsPresContext.
|
|
normal = 0; one frame = 1; one loop = 2 */
|
|
int is_aborted; /* True if aborted by NetLib. */
|
|
PRPackedBool is_url_loading;/* TRUE if NetLib is currently loading the URL. */
|
|
int is_multipart; /* TRUE if stream is known to be multipart. */
|
|
int multi; /* Known to be either multipart-MIME
|
|
or multi-image format */
|
|
int new_data_for_fe; /* Any Scanlines that FE doesn't know about ? */
|
|
int update_start_row; /* Scanline range to send to FE */
|
|
int update_end_row;
|
|
|
|
PRUint32 bytes_consumed; /* Bytes read from the stream so far */
|
|
|
|
NI_PixmapHeader *src_header; /* Source image header information. */
|
|
IL_Pixmap *image; /* Destination image pixmap structure. */
|
|
IL_Pixmap *mask; /* Destination mask pixmap structure. */
|
|
|
|
char* type;
|
|
void *ds; /* decoder's private data */
|
|
|
|
il_converter converter;
|
|
void *quantize; /* quantizer's private data */
|
|
|
|
class nsIImgDecoder *imgdec;
|
|
class nsIImgDCallbk *imgdcb;
|
|
|
|
void *row_output_timeout;
|
|
PRUint8 *scalerow;
|
|
int pass; /* pass (scan #) of a multi-pass image.
|
|
Used for interlaced GIFs & p-JPEGs */
|
|
|
|
int forced;
|
|
PRUint32 content_length;
|
|
|
|
int dest_width, dest_height; /* Target dimensions of the image */
|
|
PRPackedBool natural_size; /* True if the image is decoded to its natural
|
|
size. */
|
|
PRPackedBool aspect_distorted; /* True if the image undergoes aspect ratio
|
|
distortion during decoding. */
|
|
|
|
IL_IRGB *background_color; /* The requested background color for this
|
|
image (only applies if the image is
|
|
determined to be transparent.) A mask will
|
|
be created for a transparent image only if
|
|
no background color was requested. */
|
|
|
|
char *comment; /* Human-readable text stored in image */
|
|
int comment_length;
|
|
|
|
int colormap_serial_num; /* serial number of last installed colormap */
|
|
|
|
int dont_use_custom_palette;
|
|
int rendered_with_custom_palette;
|
|
IL_DitherMode dither_mode; /* ilDither or ilClosestColor */
|
|
|
|
IL_GroupContext *img_cx; /* The context in which this image was created.
|
|
Used during image decoding only. */
|
|
IL_DisplayType display_type; /* Type of display for which the container
|
|
is created. */
|
|
ilIImageRenderer *img_cb;
|
|
ilINetContext *net_cx; /* Context which initiated this transfer. */
|
|
|
|
IL_ImageReq *clients; /* List of clients of this container. */
|
|
IL_ImageReq *lclient; /* Last client in the client list. */
|
|
il_context_list *img_cx_list; /* List of contexts which have clients of
|
|
this container. */
|
|
|
|
IL_Rect displayable_rect; /* The area of the image pixmap which is in a
|
|
displayable state. Used as a filter
|
|
between client calls to IL_DisplaySubImage
|
|
and Image Library calls to DisplayPixmap, in
|
|
the event that the client requests us to
|
|
draw a part of the pixmap that has yet to
|
|
be decoded. */
|
|
|
|
time_t expires; /* Expiration date for the corresponding URL */
|
|
|
|
#ifdef DEBUG
|
|
PRTime start_time;
|
|
#endif
|
|
char *fetch_url; /* actual url address used */
|
|
};
|
|
|
|
|
|
typedef enum { ilUndefined, ilCI, ilGrey, ilRGB } il_mode;
|
|
|
|
typedef enum il_draw_mode
|
|
{
|
|
ilErase, /* Transparent areas are reset to background */
|
|
ilOverlay /* Transparent areas overlay existing data */
|
|
} il_draw_mode;
|
|
|
|
|
|
/* A context for a group of images. */
|
|
struct _IL_GroupContext {
|
|
ilIImageRenderer *img_cb;
|
|
void *dpy_cx; /* An opaque pointer passed back to all
|
|
callbacks in the interface vtable. */
|
|
|
|
IL_DisplayType display_type; /* IL_Console, IL_Printer or IL_PostScript. */
|
|
IL_ColorSpace *color_space; /* Display colorspace. */
|
|
|
|
/* Preferences */
|
|
PRPackedBool progressive_display; /* If TRUE, images are displayed while
|
|
loading */
|
|
IL_DitherMode dither_mode; /* IL_ClosestColor, IL_Dither or IL_Auto. */
|
|
int dontscale; /* Used for Macs, which do their own scaling */
|
|
int nolowsrc; /* If TRUE, never display LOSRC images */
|
|
|
|
/* Per-context state */
|
|
il_container_list *container_list;/* List of containers in this context. */
|
|
int32 num_containers; /* Number of containers in this context. */
|
|
int32 num_loading; /* Number of containers which are currently
|
|
loading. */
|
|
int32 num_looping; /* Number of containers which are currently
|
|
looping i.e. on second or subsequent
|
|
iteration of an animation. */
|
|
int32 num_aborted; /* Number of containers which have aborted
|
|
so far. */
|
|
|
|
XP_ObserverList obs_list; /* List of observers for this image group. */
|
|
|
|
struct _IL_GroupContext *next; /* Next entry in a list of image group
|
|
contexts. */
|
|
};
|
|
|
|
|
|
/* Tag to indicate whether a request represents an image or an icon. */
|
|
typedef enum
|
|
{
|
|
IL_IMAGE,
|
|
IL_ICON
|
|
} IL_ImageType;
|
|
|
|
|
|
/* This is Image Library's internal representation of a client's image request.
|
|
It represents a handle on a specific instance of an image container. */
|
|
struct _IL_ImageReq {
|
|
il_container *ic; /* The image container for this request (may
|
|
be shared with other requests.) */
|
|
IL_ImageType image_type; /* Image or icon. */
|
|
|
|
IL_GroupContext *img_cx; /* The group context to which this request
|
|
belongs. */
|
|
ilINetContext *net_cx; /* A clone of the net context which the image
|
|
library was given when this image handle was
|
|
created. This serves as a backup in case
|
|
the image container's net_cx becomes invalid,
|
|
(for example, when the client for which the
|
|
container was initially created is destroyed.) */
|
|
PRPackedBool stopped; /* TRUE - if user hit "Stop" button */
|
|
int is_view_image; /* non-zero if client is
|
|
internal-external-reconnect */
|
|
|
|
XP_ObserverList obs_list; /* List of observers for this request. */
|
|
|
|
struct _IL_ImageReq *next; /* Next entry in a list of image requests. */
|
|
};
|
|
|
|
|
|
|
|
#endif
|
|
#endif
|