#include <config.h>
#include <stdio.h>
-#include <math.h>
#include <unistd.h>
#ifdef HAVE_PNG
#endif /* HAVE_X_WINDOWS */
#ifdef HAVE_NTGUI
-#include "w32.h"
+
+/* We need (or want) w32.h only when we're _not_ compiling for Cygwin. */
+#ifdef WINDOWSNT
+# include "w32.h"
+#endif
+
/* W32_TODO : Color tables on W32. */
#undef COLOR_TABLE_SUPPORT
}
#if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
-int
+ptrdiff_t
x_bitmap_pixmap (FRAME_PTR f, ptrdiff_t id)
{
/* HAVE_NTGUI needs the explicit cast here. */
- return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap;
+ return (ptrdiff_t) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap;
}
#endif
if (--bm->refcount == 0)
{
- BLOCK_INPUT;
+ block_input ();
free_bitmap_record (dpyinfo, bm);
- UNBLOCK_INPUT;
+ unblock_input ();
}
}
}
dpyinfo->bitmaps_last = 0;
}
+static bool x_create_x_image_and_pixmap (struct frame *, int, int, int,
+ XImagePtr *, Pixmap *);
+static void x_destroy_x_image (XImagePtr ximg);
#ifdef HAVE_X_WINDOWS
unsigned long width,
unsigned long height);
-static int x_create_x_image_and_pixmap (struct frame *f, int width, int height,
- int depth, XImagePtr *ximg,
- Pixmap *pixmap);
-
-static void x_destroy_x_image (XImagePtr ximg);
-
/* Create a mask of a bitmap. Note is this not a perfect mask.
It's nicer with some borders in this context */
-int
+void
x_create_bitmap_mask (struct frame *f, ptrdiff_t id)
{
Pixmap pixmap, mask;
XImagePtr ximg, mask_img;
unsigned long width, height;
- int result;
+ bool result;
unsigned long bg;
unsigned long x, y, xp, xm, yp, ym;
GC gc;
Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
if (!(id > 0))
- return -1;
+ return;
pixmap = x_bitmap_pixmap (f, id);
width = x_bitmap_width (f, id);
height = x_bitmap_height (f, id);
- BLOCK_INPUT;
+ block_input ();
ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height,
~0, ZPixmap);
if (!ximg)
{
- UNBLOCK_INPUT;
- return -1;
+ unblock_input ();
+ return;
}
result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask);
- UNBLOCK_INPUT;
+ unblock_input ();
if (!result)
{
XDestroyImage (ximg);
- return -1;
+ return;
}
bg = four_corners_best (ximg, NULL, width, height);
}
}
- eassert (interrupt_input_blocked);
+ eassert (input_blocked_p ());
gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL);
XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0,
width, height);
XDestroyImage (ximg);
x_destroy_x_image (mask_img);
-
- return 0;
}
#endif /* HAVE_X_WINDOWS */
static Lisp_Object Qcount, Qextension_data, Qdelay;
static Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic;
-/* Function prototypes. */
+/* Forward function prototypes. */
-static Lisp_Object define_image_type (struct image_type *type, int loaded);
-static struct image_type *lookup_image_type (Lisp_Object symbol);
-static void image_error (const char *format, Lisp_Object, Lisp_Object);
+static struct image_type *lookup_image_type (Lisp_Object);
static void x_laplace (struct frame *, struct image *);
static void x_emboss (struct frame *, struct image *);
-static int x_build_heuristic_mask (struct frame *, struct image *,
- Lisp_Object);
-#ifdef HAVE_NTGUI
+static void x_build_heuristic_mask (struct frame *, struct image *,
+ Lisp_Object);
+#ifdef WINDOWSNT
+extern Lisp_Object Vlibrary_cache;
#define CACHE_IMAGE_TYPE(type, status) \
do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0)
#else
/* Define a new image type from TYPE. This adds a copy of TYPE to
image_types and caches the loading status of TYPE. */
-static Lisp_Object
-define_image_type (struct image_type *type, int loaded)
+static struct image_type *
+define_image_type (struct image_type *type)
{
- Lisp_Object success;
+ struct image_type *p = NULL;
+ Lisp_Object target_type = *type->type;
+ bool type_valid = 1;
- if (!loaded)
- success = Qnil;
- else
+ block_input ();
+
+ for (p = image_types; p; p = p->next)
+ if (EQ (*p->type, target_type))
+ goto done;
+
+ if (type->init)
+ {
+#if defined HAVE_NTGUI && defined WINDOWSNT
+ /* If we failed to load the library before, don't try again. */
+ Lisp_Object tested = Fassq (target_type, Vlibrary_cache);
+ if (CONSP (tested) && NILP (XCDR (tested)))
+ type_valid = 0;
+ else
+#endif
+ {
+ type_valid = type->init ();
+ CACHE_IMAGE_TYPE (target_type, type_valid ? Qt : Qnil);
+ }
+ }
+
+ if (type_valid)
{
/* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
The initialized data segment is read-only. */
- struct image_type *p = xmalloc (sizeof *p);
- memcpy (p, type, sizeof *p);
+ p = xmalloc (sizeof *p);
+ *p = *type;
p->next = image_types;
image_types = p;
- success = Qt;
}
- CACHE_IMAGE_TYPE (*type->type, success);
- return success;
-}
-
-
-/* Look up image type SYMBOL, and return a pointer to its image_type
- structure. Value is null if SYMBOL is not a known image type. */
-
-static inline struct image_type *
-lookup_image_type (Lisp_Object symbol)
-{
- struct image_type *type;
-
- /* We must initialize the image-type if it hasn't been already. */
- if (NILP (Finit_image_library (symbol, Vdynamic_library_alist)))
- return 0; /* unimplemented */
-
- for (type = image_types; type; type = type->next)
- if (EQ (symbol, *type->type))
- break;
-
- return type;
+ done:
+ unblock_input ();
+ return p;
}
-/* Value is non-zero if OBJECT is a valid Lisp image specification. A
+/* Value is true if OBJECT is a valid Lisp image specification. A
valid image specification is a list whose car is the symbol
`image', and whose rest is a property list. The property list must
contain a value for key `:type'. That value must be the name of a
supported image type. The rest of the property list depends on the
image type. */
-int
+bool
valid_image_p (Lisp_Object object)
{
- int valid_p = 0;
+ bool valid_p = 0;
if (IMAGEP (object))
{
/* The type of value allowed. */
enum image_value_type type;
- /* Non-zero means key must be present. */
- int mandatory_p;
+ /* True means key must be present. */
+ bool mandatory_p;
/* Used to recognize duplicate keywords in a property list. */
int count;
};
-static int parse_image_spec (Lisp_Object, struct image_keyword *,
- int, Lisp_Object);
-static Lisp_Object image_spec_value (Lisp_Object, Lisp_Object, int *);
-
-
/* Parse image spec SPEC according to KEYWORDS. A valid image spec
has the format (image KEYWORD VALUE ...). One of the keyword/
value pairs must be `:type TYPE'. KEYWORDS is a vector of
image_keywords structures of size NKEYWORDS describing other
- allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
+ allowed keyword/value pairs. Value is true if SPEC is valid. */
-static int
+static bool
parse_image_spec (Lisp_Object spec, struct image_keyword *keywords,
int nkeywords, Lisp_Object type)
{
break;
default:
- abort ();
+ emacs_abort ();
break;
}
/* Return the value of KEY in image specification SPEC. Value is nil
- if KEY is not present in SPEC. if FOUND is not null, set *FOUND
- to 1 if KEY was found in SPEC, set it to 0 otherwise. */
+ if KEY is not present in SPEC. Set *FOUND depending on whether KEY
+ was found in SPEC. */
static Lisp_Object
-image_spec_value (Lisp_Object spec, Lisp_Object key, int *found)
+image_spec_value (Lisp_Object spec, Lisp_Object key, bool *found)
{
Lisp_Object tail;
Image type independent image structures
***********************************************************************/
-static void free_image (struct frame *f, struct image *img);
-
#define MAX_IMAGE_SIZE 10.0
/* Allocate and return a new image structure for image specification
SPEC. SPEC has a hash value of HASH. */
}
}
-/* Return 1 if the given widths and heights are valid for display;
- otherwise, return 0. */
+/* Return true if the given widths and heights are valid for display. */
-static int
+static bool
check_image_size (struct frame *f, int width, int height)
{
int w, h;
/* If IMG doesn't have a pixmap yet, load it now, using the image
type dependent loader function. */
if (img->pixmap == NO_PIXMAP && !img->load_failed_p)
- img->load_failed_p = img->type->load (f, img) == 0;
+ img->load_failed_p = ! img->type->load (f, img);
}
if (! img->background_valid)
/* IMG doesn't have a background yet, try to guess a reasonable value. */
{
- int free_ximg = !ximg;
+ bool free_ximg = !ximg;
#ifdef HAVE_NTGUI
HGDIOBJ prev;
#endif /* HAVE_NTGUI */
{
if (img->mask)
{
- int free_mask = !mask;
+ bool free_mask = !mask;
#ifdef HAVE_NTGUI
HGDIOBJ prev;
#endif /* HAVE_NTGUI */
Helper functions for X image types
***********************************************************************/
-static void x_clear_image_1 (struct frame *, struct image *, int,
- int, int);
-static void x_clear_image (struct frame *f, struct image *img);
-static unsigned long x_alloc_image_color (struct frame *f,
- struct image *img,
- Lisp_Object color_name,
- unsigned long dflt);
-
-
-/* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
- free the pixmap if any. MASK_P non-zero means clear the mask
- pixmap if any. COLORS_P non-zero means free colors allocated for
- the image, if any. */
+/* Clear X resources of image IMG on frame F. PIXMAP_P means free the
+ pixmap if any. MASK_P means clear the mask pixmap if any.
+ COLORS_P means free colors allocated for the image, if any. */
static void
-x_clear_image_1 (struct frame *f, struct image *img, int pixmap_p, int mask_p,
- int colors_p)
+x_clear_image_1 (struct frame *f, struct image *img, bool pixmap_p,
+ bool mask_p, bool colors_p)
{
if (pixmap_p && img->pixmap)
{
static void
x_clear_image (struct frame *f, struct image *img)
{
- BLOCK_INPUT;
+ block_input ();
x_clear_image_1 (f, img, 1, 1, 1);
- UNBLOCK_INPUT;
+ unblock_input ();
}
***********************************************************************/
static void cache_image (struct frame *f, struct image *img);
-static void postprocess_image (struct frame *, struct image *);
/* Return a new, initialized image cache that is allocated from the
heap. Call free_image_cache to free an image cache. */
/* Block input so that we won't be interrupted by a SIGIO
while being in an inconsistent state. */
- BLOCK_INPUT;
+ block_input ();
if (!NILP (filter))
{
++windows_or_buffers_changed;
}
- UNBLOCK_INPUT;
+ unblock_input ();
}
}
x_build_heuristic_mask (f, img, mask);
else
{
- int found_p;
+ bool found_p;
mask = image_spec_value (spec, QCmask, &found_p);
/* If not found, create a new image and cache it. */
if (img == NULL)
{
- BLOCK_INPUT;
+ block_input ();
img = make_image (spec, hash);
cache_image (f, img);
- img->load_failed_p = img->type->load (f, img) == 0;
+ img->load_failed_p = ! img->type->load (f, img);
img->frame_foreground = FRAME_FOREGROUND_PIXEL (f);
img->frame_background = FRAME_BACKGROUND_PIXEL (f);
postprocess_image (f, img);
}
- UNBLOCK_INPUT;
+ unblock_input ();
}
/* We're using IMG, so set its timestamp to `now'. */
X / NS / W32 support code
***********************************************************************/
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* Macro for defining functions that will be loaded from image DLLs. */
#define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args
if (!fn_##func) return 0; \
}
-#endif /* HAVE_NTGUI */
-
-static int x_create_x_image_and_pixmap (struct frame *, int, int, int,
- XImagePtr *, Pixmap *);
-static void x_destroy_x_image (XImagePtr);
-static void x_put_x_image (struct frame *, XImagePtr, Pixmap, int, int);
+#endif /* WINDOWSNT */
-/* Return nonzero if XIMG's size WIDTH x HEIGHT doesn't break the
+/* Return true if XIMG's size WIDTH x HEIGHT doesn't break the
windowing system.
WIDTH and HEIGHT must both be positive.
If XIMG is null, assume it is a bitmap. */
-static int
+static bool
x_check_image_size (XImagePtr ximg, int width, int height)
{
#ifdef HAVE_X_WINDOWS
frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
via xmalloc. Print error messages via image_error if an error
- occurs. Value is non-zero if successful.
+ occurs. Value is true if successful.
On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
should indicate the bit depth of the image. */
-static int
+static bool
x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth,
XImagePtr *ximg, Pixmap *pixmap)
{
Window window = FRAME_X_WINDOW (f);
Screen *screen = FRAME_X_SCREEN (f);
- eassert (interrupt_input_blocked);
+ eassert (input_blocked_p ());
if (depth <= 0)
depth = DefaultDepthOfScreen (screen);
static void
x_destroy_x_image (XImagePtr ximg)
{
- eassert (interrupt_input_blocked);
+ eassert (input_blocked_p ());
if (ximg)
{
#ifdef HAVE_X_WINDOWS
#ifdef HAVE_X_WINDOWS
GC gc;
- eassert (interrupt_input_blocked);
+ eassert (input_blocked_p ());
gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL);
XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height);
XFreeGC (FRAME_X_DISPLAY (f), gc);
static unsigned char *
slurp_file (char *file, ptrdiff_t *size)
{
- FILE *fp = NULL;
+ FILE *fp = fopen (file, "rb");
unsigned char *buf = NULL;
struct stat st;
- if (stat (file, &st) == 0
- && (fp = fopen (file, "rb")) != NULL
+ if (fp && fstat (fileno (fp), &st) == 0
&& 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX)
&& (buf = xmalloc (st.st_size),
fread (buf, 1, st.st_size, fp) == st.st_size))
XBM images
***********************************************************************/
-static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
-static int xbm_load (struct frame *f, struct image *img);
-static int xbm_load_image (struct frame *f, struct image *img,
- unsigned char *, unsigned char *);
-static int xbm_image_p (Lisp_Object object);
-static int xbm_read_bitmap_data (struct frame *f,
- unsigned char *, unsigned char *,
- int *, int *, char **, int);
-static int xbm_file_p (Lisp_Object);
+static bool xbm_load (struct frame *f, struct image *img);
+static bool xbm_image_p (Lisp_Object object);
+static bool xbm_file_p (Lisp_Object);
/* Indices of image specification fields in xbm_format, below. */
xbm_image_p,
xbm_load,
x_clear_image,
+ NULL,
NULL
};
};
-/* Return non-zero if OBJECT is a valid XBM-type image specification.
+/* Return true if OBJECT is a valid XBM-type image specification.
A valid specification is a list starting with the symbol `image'
The rest of the list is a property list which must contain an
- entry `:type xbm..
+ entry `:type xbm'.
If the specification specifies a file to load, it must contain
an entry `:file FILENAME' where FILENAME is a string.
foreground and background of the frame on which the image is
displayed is used. */
-static int
+static bool
xbm_image_p (Lisp_Object object)
{
struct image_keyword kw[XBM_LAST];
static void
Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data,
RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg,
- int non_default_colors)
+ bool non_default_colors)
{
#ifdef HAVE_NTGUI
img->pixmap
X versions. CONTENTS is a pointer to a buffer to parse; END is the
buffer's end. Set *WIDTH and *HEIGHT to the width and height of
the image. Return in *DATA the bitmap data allocated with xmalloc.
- Value is non-zero if successful. DATA null means just test if
- CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
- is non-zero, inhibit the call to image_error when the image size is
- invalid (the bitmap remains unread). */
+ Value is true if successful. DATA null means just test if
+ CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR,
+ inhibit the call to image_error when the image size is invalid (the
+ bitmap remains unread). */
-static int
+static bool
xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end,
int *width, int *height, char **data,
- int inhibit_image_error)
+ bool inhibit_image_error)
{
unsigned char *s = contents;
char buffer[BUFSIZ];
- int padding_p = 0;
- int v10 = 0;
+ bool padding_p = 0;
+ bool v10 = 0;
int bytes_per_line, i, nbytes;
char *p;
int value;
/* Load XBM image IMG which will be displayed on frame F from buffer
- CONTENTS. END is the end of the buffer. Value is non-zero if
+ CONTENTS. END is the end of the buffer. Value is true if
successful. */
-static int
+static bool
xbm_load_image (struct frame *f, struct image *img, unsigned char *contents,
unsigned char *end)
{
- int rc;
+ bool rc;
char *data;
- int success_p = 0;
+ bool success_p = 0;
rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height,
&data, 0);
{
unsigned long foreground = FRAME_FOREGROUND_PIXEL (f);
unsigned long background = FRAME_BACKGROUND_PIXEL (f);
- int non_default_colors = 0;
+ bool non_default_colors = 0;
Lisp_Object value;
eassert (img->width > 0 && img->height > 0);
}
-/* Value is non-zero if DATA looks like an in-memory XBM file. */
+/* Value is true if DATA looks like an in-memory XBM file. */
-static int
+static bool
xbm_file_p (Lisp_Object data)
{
int w, h;
/* Fill image IMG which is used on frame F with pixmap data. Value is
- non-zero if successful. */
+ true if successful. */
-static int
+static bool
xbm_load (struct frame *f, struct image *img)
{
- int success_p = 0;
+ bool success_p = 0;
Lisp_Object file_name;
eassert (xbm_image_p (img->spec));
Lisp_Object data;
unsigned long foreground = FRAME_FOREGROUND_PIXEL (f);
unsigned long background = FRAME_BACKGROUND_PIXEL (f);
- int non_default_colors = 0;
+ bool non_default_colors = 0;
char *bits;
- int parsed_p;
- int in_memory_file_p = 0;
+ bool parsed_p;
+ bool in_memory_file_p = 0;
/* See if data looks like an in-memory XBM file. */
data = image_spec_value (img->spec, QCdata, NULL);
/* Parse the image specification. */
memcpy (fmt, xbm_format, sizeof fmt);
parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm);
- (void) parsed_p;
eassert (parsed_p);
/* Get specified width, and height. */
else
bits = (char *) XBOOL_VECTOR (data)->data;
-#ifdef WINDOWSNT
+#ifdef HAVE_NTGUI
{
char *invertedBits;
int nbytes, i;
#if defined (HAVE_XPM) || defined (HAVE_NS)
-static int xpm_image_p (Lisp_Object object);
-static int xpm_load (struct frame *f, struct image *img);
-static int xpm_valid_color_symbols_p (Lisp_Object);
+static bool xpm_image_p (Lisp_Object object);
+static bool xpm_load (struct frame *f, struct image *img);
#endif /* HAVE_XPM || HAVE_NS */
{":background", IMAGE_STRING_OR_NIL_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_xpm_functions (void);
+#else
+#define init_xpm_functions NULL
+#endif
+
/* Structure describing the image type XPM. */
static struct image_type xpm_type =
xpm_image_p,
xpm_load,
x_clear_image,
+ init_xpm_functions,
NULL
};
#ifdef ALLOC_XPM_COLORS
-static void xpm_init_color_cache (struct frame *, XpmAttributes *);
-static void xpm_free_color_cache (void);
-static int xpm_lookup_color (struct frame *, char *, XColor *);
-static int xpm_color_bucket (char *);
static struct xpm_cached_color *xpm_cache_color (struct frame *, char *,
XColor *, int);
/* Look up color COLOR_NAME for frame F in the color cache. If found,
return the cached definition in *COLOR. Otherwise, make a new
- entry in the cache and allocate the color. Value is zero if color
+ entry in the cache and allocate the color. Value is false if color
allocation failed. */
-static int
+static bool
xpm_lookup_color (struct frame *f, char *color_name, XColor *color)
{
struct xpm_cached_color *p;
#endif /* ALLOC_XPM_COLORS */
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* XPM library details. */
xpm_XImage **, XpmAttributes *));
DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *));
-static int
-init_xpm_functions (Lisp_Object libraries)
+static bool
+init_xpm_functions (void)
{
HMODULE library;
- if (!(library = w32_delayed_load (libraries, Qxpm)))
+ if (!(library = w32_delayed_load (Qxpm)))
return 0;
LOAD_IMGLIB_FN (library, XpmFreeAttributes);
return 1;
}
-#endif /* HAVE_NTGUI */
+#endif /* WINDOWSNT */
+#if defined HAVE_NTGUI && !defined WINDOWSNT
+/* Glue for code below */
+#define fn_XpmReadFileToImage XpmReadFileToImage
+#define fn_XpmCreateImageFromBuffer XpmCreateImageFromBuffer
+#define fn_XImageFree XImageFree
+#define fn_XpmFreeAttributes XpmFreeAttributes
+#endif /* HAVE_NTGUI && !WINDOWSNT */
-/* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
+/* Value is true if COLOR_SYMBOLS is a valid color symbols list
for XPM images. Such a list must consist of conses whose car and
cdr are strings. */
-static int
+static bool
xpm_valid_color_symbols_p (Lisp_Object color_symbols)
{
while (CONSP (color_symbols))
}
-/* Value is non-zero if OBJECT is a valid XPM image specification. */
+/* Value is true if OBJECT is a valid XPM image specification. */
-static int
+static bool
xpm_image_p (Lisp_Object object)
{
struct image_keyword fmt[XPM_LAST];
#endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
/* Load image IMG which will be displayed on frame F. Value is
- non-zero if successful. */
+ true if successful. */
#ifdef HAVE_XPM
-static int
+static bool
xpm_load (struct frame *f, struct image *img)
{
int rc;
{
*put_func = xpm_put_color_table_h;
*get_func = xpm_get_color_table_h;
- return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE),
+ return make_hash_table (hashtest_equal, make_number (DEFAULT_HASH_SIZE),
make_float (DEFAULT_REHASH_SIZE),
make_float (DEFAULT_REHASH_THRESHOLD),
- Qnil, Qnil, Qnil);
+ Qnil);
}
static void
return -1;
}
-static int
+static bool
xpm_load_image (struct frame *f,
struct image *img,
const unsigned char *contents,
void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object);
Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int);
Lisp_Object frame, color_symbols, color_table;
- int best_key, have_mask = 0;
+ int best_key;
+ bool have_mask = 0;
XImagePtr ximg = NULL, mask_img = NULL;
#define match() \
#undef expect_ident
}
-static int
+static bool
xpm_load (struct frame *f,
struct image *img)
{
- int success_p = 0;
+ bool success_p = 0;
Lisp_Object file_name;
/* If IMG->spec specifies a file name, create a non-file spec from it. */
#ifdef HAVE_X_WINDOWS
XColor color;
Colormap cmap;
- int rc;
+ bool rc;
#else
COLORREF color;
#endif
{
XColor color;
Colormap cmap;
- int rc;
+ bool rc;
if (ct_colors_allocated_max <= ct_colors_allocated)
return FRAME_FOREGROUND_PIXEL (f);
x_query_color (f, &color);
rc = x_alloc_nearest_color (f, cmap, &color);
#else
- BLOCK_INPUT;
+ block_input ();
cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f));
color.pixel = pixel;
XQueryColor (NULL, cmap, &color);
rc = x_alloc_nearest_color (f, cmap, &color);
- UNBLOCK_INPUT;
+ unblock_input ();
#endif /* HAVE_X_WINDOWS */
if (rc)
Algorithms
***********************************************************************/
-static XColor *x_to_xcolors (struct frame *, struct image *, int);
-static void x_from_xcolors (struct frame *, struct image *, XColor *);
-static void x_detect_edges (struct frame *, struct image *, int[9], int);
-
-#ifdef HAVE_NTGUI
-static void XPutPixel (XImagePtr , int, int, COLORREF);
-#endif /* HAVE_NTGUI */
-
/* Edge detection matrices for different edge-detection
strategies. */
/* On frame F, return an array of XColor structures describing image
IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
- non-zero means also fill the red/green/blue members of the XColor
+ means also fill the red/green/blue members of the XColor
structures. Value is a pointer to the array of XColors structures,
allocated with xmalloc; it must be freed by the caller. */
static XColor *
-x_to_xcolors (struct frame *f, struct image *img, int rgb_p)
+x_to_xcolors (struct frame *f, struct image *img, bool rgb_p)
{
int x, y;
XColor *colors, *p;
determine the background color of IMG. If it is a list '(R G B)',
with R, G, and B being integers >= 0, take that as the color of the
background. Otherwise, determine the background color of IMG
- heuristically. Value is non-zero if successful. */
+ heuristically. */
-static int
+static void
x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how)
{
XImagePtr_or_DC ximg;
char *mask_img;
int row_width;
#endif /* HAVE_NTGUI */
- int x, y, rc, use_img_background;
+ int x, y;
+ bool rc, use_img_background;
unsigned long bg = 0;
if (img->mask)
rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1,
&mask_img, &img->mask);
if (!rc)
- return 0;
+ return;
#endif /* !HAVE_NS */
/* Get the X image of IMG->pixmap. */
#endif /* HAVE_NTGUI */
Destroy_Image (ximg, prev);
-
- return 1;
}
\f
PBM (mono, gray, color)
***********************************************************************/
-static int pbm_image_p (Lisp_Object object);
-static int pbm_load (struct frame *f, struct image *img);
-static int pbm_scan_number (unsigned char **, unsigned char *);
+static bool pbm_image_p (Lisp_Object object);
+static bool pbm_load (struct frame *f, struct image *img);
/* The symbol `pbm' identifying images of this type. */
pbm_image_p,
pbm_load,
x_clear_image,
+ NULL,
NULL
};
-/* Return non-zero if OBJECT is a valid PBM image specification. */
+/* Return true if OBJECT is a valid PBM image specification. */
-static int
+static bool
pbm_image_p (Lisp_Object object)
{
struct image_keyword fmt[PBM_LAST];
}
-#ifdef HAVE_NTGUI
-#if 0 /* Unused. ++kfs */
-
-/* Read FILE into memory. Value is a pointer to a buffer allocated
- with xmalloc holding FILE's contents. Value is null if an error
- occurred. *SIZE is set to the size of the file. */
-
-static char *
-pbm_read_file (Lisp_Object file, int *size)
-{
- FILE *fp = NULL;
- char *buf = NULL;
- struct stat st;
-
- if (stat (SDATA (file), &st) == 0
- && (fp = fopen (SDATA (file), "rb")) != NULL
- && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX)
- && (buf = xmalloc (st.st_size),
- fread (buf, 1, st.st_size, fp) == st.st_size))
- {
- *size = st.st_size;
- fclose (fp);
- }
- else
- {
- if (fp)
- fclose (fp);
- if (buf)
- {
- xfree (buf);
- buf = NULL;
- }
- }
-
- return buf;
-}
-#endif
-#endif /* HAVE_NTGUI */
-
/* Load PBM image IMG for use on frame F. */
-static int
+static bool
pbm_load (struct frame *f, struct image *img)
{
- int raw_p, x, y;
+ bool raw_p;
+ int x, y;
int width, height, max_color_idx = 0;
XImagePtr ximg;
Lisp_Object file, specified_file;
/* Function prototypes. */
-static int png_image_p (Lisp_Object object);
-static int png_load (struct frame *f, struct image *img);
+static bool png_image_p (Lisp_Object object);
+static bool png_load (struct frame *f, struct image *img);
/* The symbol `png' identifying images of this type. */
{":background", IMAGE_STRING_OR_NIL_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_png_functions (void);
+#else
+#define init_png_functions NULL
+#endif
+
/* Structure describing the image type `png'. */
static struct image_type png_type =
png_image_p,
png_load,
x_clear_image,
+ init_png_functions,
NULL
};
-/* Return non-zero if OBJECT is a valid PNG image specification. */
+/* Return true if OBJECT is a valid PNG image specification. */
-static int
+static bool
png_image_p (Lisp_Object object)
{
struct image_keyword fmt[PNG_LAST];
#ifdef HAVE_PNG
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* PNG library details. */
DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp));
DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t));
#endif /* libpng version >= 1.5 */
-static int
-init_png_functions (Lisp_Object libraries)
+static bool
+init_png_functions (void)
{
HMODULE library;
- if (!(library = w32_delayed_load (libraries, Qpng)))
+ if (!(library = w32_delayed_load (Qpng)))
return 0;
LOAD_IMGLIB_FN (library, png_get_io_ptr);
#define fn_png_set_longjmp_fn png_set_longjmp_fn
#endif /* libpng version >= 1.5 */
-#endif /* HAVE_NTGUI */
+#endif /* WINDOWSNT */
+/* Possibly inefficient/inexact substitutes for _setjmp and _longjmp.
+ Do not use sys_setjmp, as PNG supports only jmp_buf. The _longjmp
+ substitute may munge the signal mask, but that should be OK here.
+ MinGW (MS-Windows) uses _setjmp and defines setjmp to _setjmp in
+ the system header setjmp.h; don't mess up that. */
+#ifndef HAVE__SETJMP
+# define _setjmp(j) setjmp (j)
+# define _longjmp longjmp
+#endif
#if (PNG_LIBPNG_VER < 10500)
#define PNG_LONGJMP(ptr) (_longjmp ((ptr)->jmpbuf, 1))
}
-/* Load PNG image IMG for use on frame F. Value is non-zero if
+/* Load PNG image IMG for use on frame F. Value is true if
successful. */
-static int
-png_load (struct frame *f, struct image *img)
+struct png_load_context
+{
+ /* These are members so that longjmp doesn't munge local variables. */
+ png_struct *png_ptr;
+ png_info *info_ptr;
+ png_info *end_info;
+ FILE *fp;
+ png_byte *pixels;
+ png_byte **rows;
+};
+
+static bool
+png_load_body (struct frame *f, struct image *img, struct png_load_context *c)
{
Lisp_Object file, specified_file;
Lisp_Object specified_data;
int x, y;
ptrdiff_t i;
XImagePtr ximg, mask_img = NULL;
- png_struct *png_ptr = NULL;
+ png_struct *png_ptr;
png_info *info_ptr = NULL, *end_info = NULL;
- FILE *volatile fp = NULL;
+ FILE *fp = NULL;
png_byte sig[8];
- png_byte * volatile pixels = NULL;
- png_byte ** volatile rows = NULL;
+ png_byte *pixels = NULL;
+ png_byte **rows = NULL;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type;
png_byte channels;
png_uint_32 row_bytes;
- int transparent_p;
+ bool transparent_p;
struct png_memory_storage tbr; /* Data to be read */
/* Find out what file to load. */
png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING,
NULL, my_png_error,
my_png_warning);
- if (!png_ptr)
+ if (png_ptr)
{
- if (fp) fclose (fp);
- return 0;
+ info_ptr = fn_png_create_info_struct (png_ptr);
+ end_info = fn_png_create_info_struct (png_ptr);
}
- info_ptr = fn_png_create_info_struct (png_ptr);
- if (!info_ptr)
+ c->png_ptr = png_ptr;
+ c->info_ptr = info_ptr;
+ c->end_info = end_info;
+ c->fp = fp;
+ c->pixels = pixels;
+ c->rows = rows;
+
+ if (! (info_ptr && end_info))
{
- fn_png_destroy_read_struct (&png_ptr, NULL, NULL);
- if (fp) fclose (fp);
- return 0;
+ fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info);
+ png_ptr = 0;
}
-
- end_info = fn_png_create_info_struct (png_ptr);
- if (!end_info)
+ if (! png_ptr)
{
- fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
if (fp) fclose (fp);
return 0;
}
if (_setjmp (PNG_JMPBUF (png_ptr)))
{
error:
- if (png_ptr)
- fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info);
- xfree (pixels);
- xfree (rows);
- if (fp) fclose (fp);
+ if (c->png_ptr)
+ fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info);
+ xfree (c->pixels);
+ xfree (c->rows);
+ if (c->fp)
+ fclose (c->fp);
return 0;
}
+ /* Silence a bogus diagnostic; see GCC bug 54561. */
+ IF_LINT (fp = c->fp);
+
/* Read image info. */
if (!NILP (specified_data))
fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory);
if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height
|| min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes)
memory_full (SIZE_MAX);
- pixels = xmalloc (sizeof *pixels * row_bytes * height);
- rows = xmalloc (height * sizeof *rows);
+ c->pixels = pixels = xmalloc (sizeof *pixels * row_bytes * height);
+ c->rows = rows = xmalloc (height * sizeof *rows);
for (i = 0; i < height; ++i)
rows[i] = pixels + i * row_bytes;
if (fp)
{
fclose (fp);
- fp = NULL;
+ c->fp = NULL;
}
/* Create an image and pixmap serving as mask if the PNG image
#endif /* COLOR_TABLE_SUPPORT */
/* Clean up. */
- fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info);
+ fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info);
xfree (rows);
xfree (pixels);
return 1;
}
+static bool
+png_load (struct frame *f, struct image *img)
+{
+ struct png_load_context c;
+ return png_load_body (f, img, &c);
+}
+
#else /* HAVE_PNG */
#ifdef HAVE_NS
-static int
+static bool
png_load (struct frame *f, struct image *img)
{
return ns_load_image (f, img,
#if defined (HAVE_JPEG) || defined (HAVE_NS)
-static int jpeg_image_p (Lisp_Object object);
-static int jpeg_load (struct frame *f, struct image *img);
+static bool jpeg_image_p (Lisp_Object object);
+static bool jpeg_load (struct frame *f, struct image *img);
/* The symbol `jpeg' identifying images of this type. */
{":background", IMAGE_STRING_OR_NIL_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_jpeg_functions (void);
+#else
+#define init_jpeg_functions NULL
+#endif
+
/* Structure describing the image type `jpeg'. */
static struct image_type jpeg_type =
jpeg_image_p,
jpeg_load,
x_clear_image,
+ init_jpeg_functions,
NULL
};
-/* Return non-zero if OBJECT is a valid JPEG image specification. */
+/* Return true if OBJECT is a valid JPEG image specification. */
-static int
+static bool
jpeg_image_p (Lisp_Object object)
{
struct image_keyword fmt[JPEG_LAST];
#define __WIN32__ 1
#endif
+/* rpcndr.h (via windows.h) and jpeglib.h both define boolean types.
+ Some versions of jpeglib try to detect whether rpcndr.h is loaded,
+ using the Windows boolean type instead of the jpeglib boolean type
+ if so. Cygwin jpeglib, however, doesn't try to detect whether its
+ headers are included along with windows.h, so under Cygwin, jpeglib
+ attempts to define a conflicting boolean type. Worse, forcing
+ Cygwin jpeglib headers to use the Windows boolean type doesn't work
+ because it created an ABI incompatibility between the
+ already-compiled jpeg library and the header interface definition.
+
+ The best we can do is to define jpeglib's boolean type to a
+ different name. This name, jpeg_boolean, remains in effect through
+ the rest of image.c.
+*/
+#if defined CYGWIN && defined HAVE_NTGUI
+#define boolean jpeg_boolean
+#endif
#include <jpeglib.h>
#include <jerror.h>
-#ifdef HAVE_STLIB_H_1
-#define HAVE_STDLIB_H 1
-#endif
-
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* JPEG library details. */
DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t));
DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *));
DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int));
-static int
-init_jpeg_functions (Lisp_Object libraries)
+static bool
+init_jpeg_functions (void)
{
HMODULE library;
- if (!(library = w32_delayed_load (libraries, Qjpeg)))
+ if (!(library = w32_delayed_load (Qjpeg)))
return 0;
LOAD_IMGLIB_FN (library, jpeg_finish_decompress);
#define fn_jpeg_std_error jpeg_std_error
#define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
-#endif /* HAVE_NTGUI */
+#endif /* WINDOWSNT */
struct my_jpeg_error_mgr
{
struct jpeg_error_mgr pub;
- jmp_buf setjmp_buffer;
+ sys_jmp_buf setjmp_buffer;
+
+ /* The remaining members are so that longjmp doesn't munge local
+ variables. */
+ struct jpeg_decompress_struct cinfo;
+ enum
+ {
+ MY_JPEG_ERROR_EXIT,
+ MY_JPEG_INVALID_IMAGE_SIZE,
+ MY_JPEG_CANNOT_CREATE_X
+ } failure_code;
+#ifdef lint
+ FILE *fp;
+#endif
};
my_error_exit (j_common_ptr cinfo)
{
struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err;
- _longjmp (mgr->setjmp_buffer, 1);
+ mgr->failure_code = MY_JPEG_ERROR_EXIT;
+ sys_longjmp (mgr->setjmp_buffer, 1);
}
reading the image. */
static void
-jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len)
+jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, ptrdiff_t len)
{
struct jpeg_source_mgr *src;
/* Load image IMG for use on frame F. Patterned after example.c
from the JPEG lib. */
-static int
-jpeg_load (struct frame *f, struct image *img)
+static bool
+jpeg_load_body (struct frame *f, struct image *img,
+ struct my_jpeg_error_mgr *mgr)
{
- struct jpeg_decompress_struct cinfo;
- struct my_jpeg_error_mgr mgr;
Lisp_Object file, specified_file;
Lisp_Object specified_data;
- FILE * volatile fp = NULL;
+ FILE *fp = NULL;
JSAMPARRAY buffer;
int row_stride, x, y;
XImagePtr ximg = NULL;
- int rc;
unsigned long *colors;
int width, height;
return 0;
}
+ IF_LINT (mgr->fp = fp);
+
/* Customize libjpeg's error handling to call my_error_exit when an
error is detected. This function will perform a longjmp. */
- cinfo.err = fn_jpeg_std_error (&mgr.pub);
- mgr.pub.error_exit = my_error_exit;
-
- if ((rc = _setjmp (mgr.setjmp_buffer)) != 0)
+ mgr->cinfo.err = fn_jpeg_std_error (&mgr->pub);
+ mgr->pub.error_exit = my_error_exit;
+ if (sys_setjmp (mgr->setjmp_buffer))
{
- if (rc == 1)
+ switch (mgr->failure_code)
{
- /* Called from my_error_exit. Display a JPEG error. */
- char buf[JMSG_LENGTH_MAX];
- cinfo.err->format_message ((j_common_ptr) &cinfo, buf);
- image_error ("Error reading JPEG image `%s': %s", img->spec,
- build_string (buf));
+ case MY_JPEG_ERROR_EXIT:
+ {
+ char buf[JMSG_LENGTH_MAX];
+ mgr->cinfo.err->format_message ((j_common_ptr) &mgr->cinfo, buf);
+ image_error ("Error reading JPEG image `%s': %s", img->spec,
+ build_string (buf));
+ break;
+ }
+
+ case MY_JPEG_INVALID_IMAGE_SIZE:
+ image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil);
+ break;
+
+ case MY_JPEG_CANNOT_CREATE_X:
+ break;
}
/* Close the input file and destroy the JPEG object. */
if (fp)
- fclose ((FILE *) fp);
- fn_jpeg_destroy_decompress (&cinfo);
+ fclose (fp);
+ fn_jpeg_destroy_decompress (&mgr->cinfo);
/* If we already have an XImage, free that. */
x_destroy_x_image (ximg);
return 0;
}
+ /* Silence a bogus diagnostic; see GCC bug 54561. */
+ IF_LINT (fp = mgr->fp);
+
/* Create the JPEG decompression object. Let it read from fp.
Read the JPEG image header. */
- fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo));
+ fn_jpeg_CreateDecompress (&mgr->cinfo, JPEG_LIB_VERSION, sizeof *&mgr->cinfo);
if (NILP (specified_data))
- jpeg_file_src (&cinfo, (FILE *) fp);
+ jpeg_file_src (&mgr->cinfo, fp);
else
- jpeg_memory_src (&cinfo, SDATA (specified_data),
+ jpeg_memory_src (&mgr->cinfo, SDATA (specified_data),
SBYTES (specified_data));
- fn_jpeg_read_header (&cinfo, 1);
+ fn_jpeg_read_header (&mgr->cinfo, 1);
/* Customize decompression so that color quantization will be used.
Start decompression. */
- cinfo.quantize_colors = 1;
- fn_jpeg_start_decompress (&cinfo);
- width = img->width = cinfo.output_width;
- height = img->height = cinfo.output_height;
+ mgr->cinfo.quantize_colors = 1;
+ fn_jpeg_start_decompress (&mgr->cinfo);
+ width = img->width = mgr->cinfo.output_width;
+ height = img->height = mgr->cinfo.output_height;
if (!check_image_size (f, width, height))
{
- image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil);
- _longjmp (mgr.setjmp_buffer, 2);
+ mgr->failure_code = MY_JPEG_INVALID_IMAGE_SIZE;
+ sys_longjmp (mgr->setjmp_buffer, 1);
}
/* Create X image and pixmap. */
if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap))
- _longjmp (mgr.setjmp_buffer, 2);
+ {
+ mgr->failure_code = MY_JPEG_CANNOT_CREATE_X;
+ sys_longjmp (mgr->setjmp_buffer, 1);
+ }
/* Allocate colors. When color quantization is used,
- cinfo.actual_number_of_colors has been set with the number of
- colors generated, and cinfo.colormap is a two-dimensional array
- of color indices in the range 0..cinfo.actual_number_of_colors.
+ mgr->cinfo.actual_number_of_colors has been set with the number of
+ colors generated, and mgr->cinfo.colormap is a two-dimensional array
+ of color indices in the range 0..mgr->cinfo.actual_number_of_colors.
No more than 255 colors will be generated. */
{
int i, ir, ig, ib;
- if (cinfo.out_color_components > 2)
+ if (mgr->cinfo.out_color_components > 2)
ir = 0, ig = 1, ib = 2;
- else if (cinfo.out_color_components > 1)
+ else if (mgr->cinfo.out_color_components > 1)
ir = 0, ig = 1, ib = 0;
else
ir = 0, ig = 0, ib = 0;
a default color, and we don't have to care about which colors
can be freed safely, and which can't. */
init_color_table ();
- colors = alloca (cinfo.actual_number_of_colors * sizeof *colors);
+ colors = alloca (mgr->cinfo.actual_number_of_colors * sizeof *colors);
- for (i = 0; i < cinfo.actual_number_of_colors; ++i)
+ for (i = 0; i < mgr->cinfo.actual_number_of_colors; ++i)
{
/* Multiply RGB values with 255 because X expects RGB values
in the range 0..0xffff. */
- int r = cinfo.colormap[ir][i] << 8;
- int g = cinfo.colormap[ig][i] << 8;
- int b = cinfo.colormap[ib][i] << 8;
+ int r = mgr->cinfo.colormap[ir][i] << 8;
+ int g = mgr->cinfo.colormap[ig][i] << 8;
+ int b = mgr->cinfo.colormap[ib][i] << 8;
colors[i] = lookup_rgb_color (f, r, g, b);
}
}
/* Read pixels. */
- row_stride = width * cinfo.output_components;
- buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE,
- row_stride, 1);
+ row_stride = width * mgr->cinfo.output_components;
+ buffer = mgr->cinfo.mem->alloc_sarray ((j_common_ptr) &mgr->cinfo,
+ JPOOL_IMAGE, row_stride, 1);
for (y = 0; y < height; ++y)
{
- fn_jpeg_read_scanlines (&cinfo, buffer, 1);
- for (x = 0; x < cinfo.output_width; ++x)
+ fn_jpeg_read_scanlines (&mgr->cinfo, buffer, 1);
+ for (x = 0; x < mgr->cinfo.output_width; ++x)
XPutPixel (ximg, x, y, colors[buffer[0][x]]);
}
/* Clean up. */
- fn_jpeg_finish_decompress (&cinfo);
- fn_jpeg_destroy_decompress (&cinfo);
+ fn_jpeg_finish_decompress (&mgr->cinfo);
+ fn_jpeg_destroy_decompress (&mgr->cinfo);
if (fp)
- fclose ((FILE *) fp);
+ fclose (fp);
/* Maybe fill in the background field while we have ximg handy. */
if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
return 1;
}
+static bool
+jpeg_load (struct frame *f, struct image *img)
+{
+ struct my_jpeg_error_mgr mgr;
+ return jpeg_load_body (f, img, &mgr);
+}
+
#else /* HAVE_JPEG */
#ifdef HAVE_NS
-static int
+static bool
jpeg_load (struct frame *f, struct image *img)
{
return ns_load_image (f, img,
#if defined (HAVE_TIFF) || defined (HAVE_NS)
-static int tiff_image_p (Lisp_Object object);
-static int tiff_load (struct frame *f, struct image *img);
+static bool tiff_image_p (Lisp_Object object);
+static bool tiff_load (struct frame *f, struct image *img);
/* The symbol `tiff' identifying images of this type. */
{":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_tiff_functions (void);
+#else
+#define init_tiff_functions NULL
+#endif
+
/* Structure describing the image type `tiff'. */
static struct image_type tiff_type =
tiff_image_p,
tiff_load,
x_clear_image,
+ init_tiff_functions,
NULL
};
-/* Return non-zero if OBJECT is a valid TIFF image specification. */
+/* Return true if OBJECT is a valid TIFF image specification. */
-static int
+static bool
tiff_image_p (Lisp_Object object)
{
struct image_keyword fmt[TIFF_LAST];
#include <tiffio.h>
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* TIFF library details. */
DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler));
DEF_IMGLIB_FN (void, TIFFClose, (TIFF *));
DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t));
-static int
-init_tiff_functions (Lisp_Object libraries)
+static bool
+init_tiff_functions (void)
{
HMODULE library;
- if (!(library = w32_delayed_load (libraries, Qtiff)))
+ if (!(library = w32_delayed_load (Qtiff)))
return 0;
LOAD_IMGLIB_FN (library, TIFFSetErrorHandler);
#define fn_TIFFReadRGBAImage TIFFReadRGBAImage
#define fn_TIFFClose TIFFClose
#define fn_TIFFSetDirectory TIFFSetDirectory
-#endif /* HAVE_NTGUI */
+#endif /* WINDOWSNT */
/* Reading from a memory buffer for TIFF images Based on the PNG
}
-/* Load TIFF image IMG for use on frame F. Value is non-zero if
+/* Load TIFF image IMG for use on frame F. Value is true if
successful. */
-static int
+static bool
tiff_load (struct frame *f, struct image *img)
{
Lisp_Object file, specified_file;
#else /* HAVE_TIFF */
#ifdef HAVE_NS
-static int
+static bool
tiff_load (struct frame *f, struct image *img)
{
return ns_load_image (f, img,
#if defined (HAVE_GIF) || defined (HAVE_NS)
-static int gif_image_p (Lisp_Object object);
-static int gif_load (struct frame *f, struct image *img);
+static bool gif_image_p (Lisp_Object object);
+static bool gif_load (struct frame *f, struct image *img);
static void gif_clear_image (struct frame *f, struct image *img);
/* The symbol `gif' identifying images of this type. */
{":background", IMAGE_STRING_OR_NIL_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_gif_functions (void);
+#else
+#define init_gif_functions NULL
+#endif
+
/* Structure describing the image type `gif'. */
static struct image_type gif_type =
gif_image_p,
gif_load,
gif_clear_image,
+ init_gif_functions,
NULL
};
x_clear_image (f, img);
}
-/* Return non-zero if OBJECT is a valid GIF image specification. */
+/* Return true if OBJECT is a valid GIF image specification. */
-static int
+static bool
gif_image_p (Lisp_Object object)
{
struct image_keyword fmt[GIF_LAST];
#endif /* HAVE_NTGUI */
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* GIF library details. */
DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *));
DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc));
DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *));
-static int
-init_gif_functions (Lisp_Object libraries)
+static bool
+init_gif_functions (void)
{
HMODULE library;
- if (!(library = w32_delayed_load (libraries, Qgif)))
+ if (!(library = w32_delayed_load (Qgif)))
return 0;
LOAD_IMGLIB_FN (library, DGifCloseFile);
#define fn_DGifOpen DGifOpen
#define fn_DGifOpenFileName DGifOpenFileName
-#endif /* HAVE_NTGUI */
+#endif /* WINDOWSNT */
/* Reading a GIF image from memory
Based on the PNG memory stuff to a certain extent. */
}
-/* Load GIF image IMG for use on frame F. Value is non-zero if
+/* Load GIF image IMG for use on frame F. Value is true if
successful. */
static const int interlace_start[] = {0, 4, 2, 1};
#define GIF_LOCAL_DESCRIPTOR_EXTENSION 249
-static int
+static bool
gif_load (struct frame *f, struct image *img)
{
Lisp_Object file;
#else /* !HAVE_GIF */
#ifdef HAVE_NS
-static int
+static bool
gif_load (struct frame *f, struct image *img)
{
return ns_load_image (f, img,
static Lisp_Object Qimagemagick;
-static int imagemagick_image_p (Lisp_Object);
-static int imagemagick_load (struct frame *, struct image *);
+static bool imagemagick_image_p (Lisp_Object);
+static bool imagemagick_load (struct frame *, struct image *);
static void imagemagick_clear_image (struct frame *, struct image *);
/* Indices of image specification fields in imagemagick_format. */
{":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_imagemagick_functions (void);
+#else
+#define init_imagemagick_functions NULL
+#endif
+
/* Structure describing the image type for any image handled via
ImageMagick. */
imagemagick_image_p,
imagemagick_load,
imagemagick_clear_image,
+ init_imagemagick_functions,
NULL
};
x_clear_image (f, img);
}
-/* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do
+/* Return true if OBJECT is a valid IMAGEMAGICK image specification. Do
this by calling parse_image_spec and supplying the keywords that
identify the IMAGEMAGICK format. */
-static int
+static bool
imagemagick_image_p (Lisp_Object object)
{
struct image_keyword fmt[IMAGEMAGICK_LAST];
be parsed; SIZE is the number of bytes of data; and FILENAME is
either the file name or the image data.
- Return non-zero if successful. */
+ Return true if successful. */
-static int
+static bool
imagemagick_load_image (struct frame *f, struct image *img,
unsigned char *contents, unsigned int size,
char *filename)
}
-/* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if
+/* Load IMAGEMAGICK image IMG for use on frame F. Value is true if
successful. this function will go into the imagemagick_type structure, and
the prototype thus needs to be compatible with that structure. */
-static int
+static bool
imagemagick_load (struct frame *f, struct image *img)
{
- int success_p = 0;
+ bool success_p = 0;
Lisp_Object file_name;
/* If IMG->spec specifies a file name, create a non-file spec from it. */
/* Function prototypes. */
-static int svg_image_p (Lisp_Object object);
-static int svg_load (struct frame *f, struct image *img);
+static bool svg_image_p (Lisp_Object object);
+static bool svg_load (struct frame *f, struct image *img);
-static int svg_load_image (struct frame *, struct image *,
- unsigned char *, ptrdiff_t);
+static bool svg_load_image (struct frame *, struct image *,
+ unsigned char *, ptrdiff_t);
/* The symbol `svg' identifying images of this type. */
{":background", IMAGE_STRING_OR_NIL_VALUE, 0}
};
+#if defined HAVE_NTGUI && defined WINDOWSNT
+static bool init_svg_functions (void);
+#else
+#define init_svg_functions NULL
+#endif
+
/* Structure describing the image type `svg'. Its the same type of
structure defined for all image formats, handled by emacs image
functions. See struct image_type in dispextern.h. */
static struct image_type svg_type =
{
- /* An identifier showing that this is an image structure for the SVG format. */
&Qsvg,
- /* Handle to a function that can be used to identify a SVG file. */
svg_image_p,
- /* Handle to function used to load a SVG file. */
svg_load,
- /* Handle to function to free sresources for SVG. */
x_clear_image,
- /* An internal field to link to the next image type in a list of
- image types, will be filled in when registering the format. */
+ init_svg_functions,
NULL
};
-/* Return non-zero if OBJECT is a valid SVG image specification. Do
+/* Return true if OBJECT is a valid SVG image specification. Do
this by calling parse_image_spec and supplying the keywords that
identify the SVG format. */
-static int
+static bool
svg_image_p (Lisp_Object object)
{
struct image_keyword fmt[SVG_LAST];
#include <librsvg/rsvg.h>
-#ifdef HAVE_NTGUI
+#ifdef WINDOWSNT
/* SVG library functions. */
DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new);
Lisp_Object Qgdk_pixbuf, Qglib, Qgobject;
-static int
-init_svg_functions (Lisp_Object libraries)
+static bool
+init_svg_functions (void)
{
HMODULE library, gdklib, glib, gobject;
- if (!(glib = w32_delayed_load (libraries, Qglib))
- || !(gobject = w32_delayed_load (libraries, Qgobject))
- || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf))
- || !(library = w32_delayed_load (libraries, Qsvg)))
+ if (!(glib = w32_delayed_load (Qglib))
+ || !(gobject = w32_delayed_load (Qgobject))
+ || !(gdklib = w32_delayed_load (Qgdk_pixbuf))
+ || !(library = w32_delayed_load (Qsvg)))
return 0;
LOAD_IMGLIB_FN (library, rsvg_handle_new);
#define fn_g_type_init g_type_init
#define fn_g_object_unref g_object_unref
#define fn_g_error_free g_error_free
-#endif /* !HAVE_NTGUI */
+#endif /* !WINDOWSNT */
-/* Load SVG image IMG for use on frame F. Value is non-zero if
- successful. this function will go into the svg_type structure, and
- the prototype thus needs to be compatible with that structure. */
+/* Load SVG image IMG for use on frame F. Value is true if
+ successful. */
-static int
+static bool
svg_load (struct frame *f, struct image *img)
{
- int success_p = 0;
+ bool success_p = 0;
Lisp_Object file_name;
/* If IMG->spec specifies a file name, create a non-file spec from it. */
Uses librsvg to do most of the image processing.
- Returns non-zero when successful. */
-static int
+ Returns true when successful. */
+static bool
svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */
struct image *img, /* Pointer to emacs image structure. */
unsigned char *contents, /* String containing the SVG XML data to be parsed. */
#ifdef HAVE_GHOSTSCRIPT
-static int gs_image_p (Lisp_Object object);
-static int gs_load (struct frame *f, struct image *img);
+static bool gs_image_p (Lisp_Object object);
+static bool gs_load (struct frame *f, struct image *img);
static void gs_clear_image (struct frame *f, struct image *img);
/* Keyword symbols. */
gs_image_p,
gs_load,
gs_clear_image,
+ NULL,
NULL
};
}
-/* Return non-zero if OBJECT is a valid Ghostscript image
+/* Return true if OBJECT is a valid Ghostscript image
specification. */
-static int
+static bool
gs_image_p (Lisp_Object object)
{
struct image_keyword fmt[GS_LAST];
}
-/* Load Ghostscript image IMG for use on frame F. Value is non-zero
+/* Load Ghostscript image IMG for use on frame F. Value is true
if successful. */
-static int
+static bool
gs_load (struct frame *f, struct image *img)
{
uprintmax_t printnum1, printnum2;
if (x_check_image_size (0, img->width, img->height))
{
/* Only W32 version did BLOCK_INPUT here. ++kfs */
- BLOCK_INPUT;
+ block_input ();
img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
img->width, img->height,
DefaultDepthOfScreen (FRAME_X_SCREEN (f)));
- UNBLOCK_INPUT;
+ unblock_input ();
}
if (!img->pixmap)
{
XImagePtr ximg;
- BLOCK_INPUT;
+ block_input ();
/* Try to get an XImage for img->pixmep. */
ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap,
image_error ("Cannot get X image of `%s'; colors will not be freed",
img->spec, Qnil);
- UNBLOCK_INPUT;
+ unblock_input ();
}
#endif /* HAVE_X_WINDOWS */
/* Now that we have the pixmap, compute mask and transform the
image if requested. */
- BLOCK_INPUT;
+ block_input ();
postprocess_image (f, img);
- UNBLOCK_INPUT;
+ unblock_input ();
}
#endif /* HAVE_GHOSTSCRIPT */
Initialization
***********************************************************************/
-#ifdef HAVE_NTGUI
-/* Image types that rely on external libraries are loaded dynamically
- if the library is available. */
-#define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
- define_image_type (image_type, init_lib_fn (libraries))
-#else
-#define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
- define_image_type (image_type, 1)
-#endif /* HAVE_NTGUI */
-
-DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0,
+DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0,
doc: /* Initialize image library implementing image type TYPE.
Return non-nil if TYPE is a supported image type.
-Image types pbm and xbm are prebuilt; other types are loaded here.
-Libraries to load are specified in alist LIBRARIES (usually, the value
-of `dynamic-library-alist', which see). */)
- (Lisp_Object type, Lisp_Object libraries)
+If image libraries are loaded dynamically (currently only the case on
+MS-Windows), load the library for TYPE if it is not yet loaded, using
+the library file(s) specified by `dynamic-library-alist'. */)
+ (Lisp_Object type)
{
-#ifdef HAVE_NTGUI
- /* Don't try to reload the library. */
- Lisp_Object tested = Fassq (type, Vlibrary_cache);
- if (CONSP (tested))
- return XCDR (tested);
-#endif
+ return lookup_image_type (type) ? Qt : Qnil;
+}
+/* Look up image type TYPE, and return a pointer to its image_type
+ structure. Return 0 if TYPE is not a known image type. */
+
+static struct image_type *
+lookup_image_type (Lisp_Object type)
+{
/* Types pbm and xbm are built-in and always available. */
- if (EQ (type, Qpbm) || EQ (type, Qxbm))
- return Qt;
+ if (EQ (type, Qpbm))
+ return define_image_type (&pbm_type);
+
+ if (EQ (type, Qxbm))
+ return define_image_type (&xbm_type);
#if defined (HAVE_XPM) || defined (HAVE_NS)
if (EQ (type, Qxpm))
- return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries);
+ return define_image_type (&xpm_type);
#endif
#if defined (HAVE_JPEG) || defined (HAVE_NS)
if (EQ (type, Qjpeg))
- return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries);
+ return define_image_type (&jpeg_type);
#endif
#if defined (HAVE_TIFF) || defined (HAVE_NS)
if (EQ (type, Qtiff))
- return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries);
+ return define_image_type (&tiff_type);
#endif
#if defined (HAVE_GIF) || defined (HAVE_NS)
if (EQ (type, Qgif))
- return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries);
+ return define_image_type (&gif_type);
#endif
#if defined (HAVE_PNG) || defined (HAVE_NS)
if (EQ (type, Qpng))
- return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries);
+ return define_image_type (&png_type);
#endif
#if defined (HAVE_RSVG)
if (EQ (type, Qsvg))
- return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries);
+ return define_image_type (&svg_type);
#endif
#if defined (HAVE_IMAGEMAGICK)
if (EQ (type, Qimagemagick))
- return CHECK_LIB_AVAILABLE (&imagemagick_type, init_imagemagick_functions,
- libraries);
+ return define_image_type (&imagemagick_type);
#endif
#ifdef HAVE_GHOSTSCRIPT
if (EQ (type, Qpostscript))
- return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries);
+ return define_image_type (&gs_type);
#endif
- /* If the type is not recognized, avoid testing it ever again. */
- CACHE_IMAGE_TYPE (type, Qnil);
- return Qnil;
+ return NULL;
+}
+
+/* Reset image_types before dumping.
+ Called from Fdump_emacs. */
+
+void
+reset_image_types (void)
+{
+ while (image_types)
+ {
+ struct image_type *next = image_types->next;
+ xfree (image_types);
+ image_types = next;
+ }
}
void
syms_of_image (void)
{
- /* Initialize this only once, since that's what we do with Vimage_types
- and they are supposed to be in sync. Initializing here gives correct
- operation on GNU/Linux of calling dump-emacs after loading some images. */
+ /* Initialize this only once; it will be reset before dumping. */
image_types = NULL;
/* Must be defined now because we're going to update it below, while
non-numeric, there is no explicit limit on the size of images. */);
Vmax_image_size = make_float (MAX_IMAGE_SIZE);
- DEFSYM (Qpbm, "pbm");
- ADD_IMAGE_TYPE (Qpbm);
-
- DEFSYM (Qxbm, "xbm");
- ADD_IMAGE_TYPE (Qxbm);
-
- define_image_type (&xbm_type, 1);
- define_image_type (&pbm_type, 1);
-
DEFSYM (Qcount, "count");
DEFSYM (Qextension_data, "extension-data");
DEFSYM (Qdelay, "delay");
);
#endif
+ DEFSYM (Qpbm, "pbm");
+ ADD_IMAGE_TYPE (Qpbm);
+
+ DEFSYM (Qxbm, "xbm");
+ ADD_IMAGE_TYPE (Qxbm);
+
#if defined (HAVE_XPM) || defined (HAVE_NS)
DEFSYM (Qxpm, "xpm");
ADD_IMAGE_TYPE (Qxpm);
HCoop / bpt / emacs.git / blobdiff