/* Functions for image support on window system.
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
/* Free bitmap B. */
static void
-Free_Bitmap_Record (dpyinfo, bm)
+free_bitmap_record (dpyinfo, bm)
Display_Info *dpyinfo;
Bitmap_Record *bm;
{
if (--bm->refcount == 0)
{
BLOCK_INPUT;
- Free_Bitmap_Record (dpyinfo, bm);
+ free_bitmap_record (dpyinfo, bm);
UNBLOCK_INPUT;
}
}
for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++)
if (bm->refcount > 0)
- Free_Bitmap_Record (dpyinfo, bm);
+ free_bitmap_record (dpyinfo, bm);
dpyinfo->bitmaps_last = 0;
}
{
#ifdef HAVE_NTGUI
/* W32 specific version. Why?. ++kfs */
- ascent = height / 2 - (FONT_DESCENT(face->font)
- - FONT_BASE(face->font)) / 2;
+ ascent = height / 2 - (FONT_DESCENT (face->font)
+ - FONT_BASE (face->font)) / 2;
#else
/* This expression is arranged so that if the image can't be
exactly centered, it will be moved slightly up. This is
Image Cache
***********************************************************************/
+static struct image *search_image_cache P_ ((struct frame *, Lisp_Object, unsigned));
static void cache_image P_ ((struct frame *f, struct image *img));
static void postprocess_image P_ ((struct frame *, struct image *));
}
+/* Find an image matching SPEC in the cache, and return it. If no
+ image is found, return NULL. */
+static struct image *
+search_image_cache (f, spec, hash)
+ struct frame *f;
+ Lisp_Object spec;
+ unsigned hash;
+{
+ struct image *img;
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ int i = hash % IMAGE_CACHE_BUCKETS_SIZE;
+
+ if (!c) return NULL;
+
+ /* If the image spec does not specify a background color, the cached
+ image must have the same background color as the current frame.
+ The foreground color must also match, for the sake of monochrome
+ images.
+
+ In fact, we could ignore the foreground color matching condition
+ for color images, or if the image spec specifies :foreground;
+ similarly we could ignore the background color matching condition
+ for formats that don't use transparency (such as jpeg), or if the
+ image spec specifies :background. However, the extra memory
+ usage is probably negligible in practice, so we don't bother. */
+
+ for (img = c->buckets[i]; img; img = img->next)
+ if (img->hash == hash
+ && !NILP (Fequal (img->spec, spec))
+ && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f)
+ && img->frame_background == FRAME_BACKGROUND_PIXEL (f))
+ break;
+ return img;
+}
+
+
+/* Search frame F for an image with spec SPEC, and free it. */
+
+static void
+uncache_image (f, spec)
+ struct frame *f;
+ Lisp_Object spec;
+{
+ struct image *img = search_image_cache (f, spec, sxhash (spec, 0));
+ if (img)
+ free_image (f, img);
+}
+
+
/* Free image cache of frame F. Be aware that X frames share images
caches. */
/* Clear image cache of frame F. FORCE_P non-zero means free all
images. FORCE_P zero means clear only images that haven't been
displayed for some time. Should be called from time to time to
- reduce the number of loaded images. If image-eviction-seconds is
- non-nil, this frees images in the cache which weren't displayed for
- at least that many seconds. */
+ reduce the number of loaded images. If image-cache-eviction-delay
+ is non-nil, this frees images in the cache which weren't displayed
+ for at least that many seconds. */
void
clear_image_cache (f, force_p)
}
+DEFUN ("image-refresh", Fimage_refresh, Simage_refresh,
+ 1, 2, 0,
+ doc: /* Refresh the image with specification SPEC on frame FRAME.
+If SPEC specifies an image file, the displayed image is updated with
+the current contents of that file.
+FRAME nil or omitted means use the selected frame.
+FRAME t means refresh the image on all frames. */)
+ (spec, frame)
+ Lisp_Object spec, frame;
+{
+ if (!valid_image_p (spec))
+ error ("Invalid image specification");
+
+ if (EQ (frame, Qt))
+ {
+ Lisp_Object tail;
+ FOR_EACH_FRAME (tail, frame)
+ {
+ struct frame *f = XFRAME (frame);
+ if (FRAME_WINDOW_P (f))
+ uncache_image (f, spec);
+ }
+ }
+ else
+ uncache_image (check_x_frame (frame), spec);
+
+ return Qnil;
+}
+
+
/* Compute masks and transform image IMG on frame F, as specified
by the image's specification, */
{
struct image_cache *c;
struct image *img;
- int i;
unsigned hash;
struct gcpro gcpro1;
EMACS_TIME now;
/* Look up SPEC in the hash table of the image cache. */
hash = sxhash (spec, 0);
- i = hash % IMAGE_CACHE_BUCKETS_SIZE;
-
- for (img = c->buckets[i]; img; img = img->next)
- if (img->hash == hash && !NILP (Fequal (img->spec, spec)))
- break;
-
+ img = search_image_cache (f, spec, hash);
if (img && img->load_failed_p)
{
free_image (f, img);
img = make_image (spec, hash);
cache_image (f, img);
img->load_failed_p = img->type->load (f, img) == 0;
+ img->frame_foreground = FRAME_FOREGROUND_PIXEL (f);
+ img->frame_background = FRAME_BACKGROUND_PIXEL (f);
/* If we can't load the image, and we don't have a width and
height, use some arbitrary width and height so that we can
/* Load a DLL implementing an image type.
The `image-library-alist' variable associates a symbol,
- identifying an image type, to a list of possible filenames.
+ identifying an image type, to a list of possible filenames.
The function returns NULL if no library could be loaded for
the given image type, or if the library was previously loaded;
else the handle of the DLL. */
if (*pixmap == NULL)
{
- DWORD err = GetLastError();
+ DWORD err = GetLastError ();
Lisp_Object errcode;
/* All system errors are < 10000, so the following is safe. */
XSETINT (errcode, (int) err);
static unsigned char *slurp_file P_ ((char *, int *));
-/* Find image file FILE. Look in data-directory, then
+/* Find image file FILE. Look in data-directory/images, then
x-bitmap-file-path. Value is the encoded full name of the file
found, or nil if not found. */
int fd;
file_found = Qnil;
- search_path = Fcons (Vdata_directory, Vx_bitmap_file_path);
+ /* TODO I think this should use something like image-load-path
+ instead. Unfortunately, that can contain non-string elements. */
+ search_path = Fcons (Fexpand_file_name (build_string ("images"),
+ Vdata_directory),
+ Vx_bitmap_file_path);
GCPRO2 (file_found, search_path);
- /* Try to find FILE in data-directory, then x-bitmap-file-path. */
+ /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
fd = openp (search_path, file, Qnil, &file_found, Qnil);
if (fd == -1)
3. a vector of strings or bool-vectors, one for each line of the
bitmap.
- 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
+ 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
may not be specified in this case because they are defined in the
XBM file.
return bmp;
}
-static void convert_mono_to_color_image (f, img, foreground, background)
+static void
+convert_mono_to_color_image (f, img, foreground, background)
struct frame *f;
struct image *img;
COLORREF foreground, background;
release_frame_dc (f, hdc);
old_prev = SelectObject (old_img_dc, img->pixmap);
new_prev = SelectObject (new_img_dc, new_pixmap);
- SetTextColor (new_img_dc, foreground);
- SetBkColor (new_img_dc, background);
+ SetTextColor (new_img_dc, background);
+ SetBkColor (new_img_dc, foreground);
BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc,
0, 0, SRCCOPY);
static void
-Create_Pixmap_From_Bitmap_Data(f, img, data, fg, bg, non_default_colors)
+Create_Pixmap_From_Bitmap_Data (f, img, data, fg, bg, non_default_colors)
struct frame *f;
struct image *img;
char *data;
attrs.valuemask |= XpmCloseness;
#endif /* not XpmAllocCloseColors */
#endif /* ALLOC_XPM_COLORS */
-#ifdef ALLOC_XPM_COLORS
- xpm_init_color_cache (f, &attrs);
-#endif
/* If image specification contains symbolic color definitions, add
these to `attrs'. */
return XPM_TK_EOF;
}
-/* Functions for color table lookup in XPM data. A Key is a string
+/* Functions for color table lookup in XPM data. A key is a string
specifying the color of each pixel in XPM data. A value is either
an integer that specifies a pixel color, Qt that specifies
transparency, or Qnil for the unspecified color. If the length of
created with CreateDIBSection, with the pointer to the bit values
stored in ximg->data. */
-static void XPutPixel (ximg, x, y, color)
+static void
+XPutPixel (ximg, x, y, color)
XImagePtr ximg;
int x, y;
COLORREF color;
if (raw_p)
{
if ((x & 7) == 0)
- c = *p++;
+ {
+ if (p >= end)
+ {
+ x_destroy_x_image (ximg);
+ x_clear_image (f, img);
+ image_error ("Invalid image size in image `%s'",
+ img->spec, Qnil);
+ goto error;
+ }
+ c = *p++;
+ }
g = c & 0x80;
c <<= 1;
}
}
else
{
+ if (raw_p
+ && ((type == PBM_GRAY)
+ ? (p + height * width > end)
+ : (p + 3 * height * width > end)))
+ {
+ x_destroy_x_image (ximg);
+ x_clear_image (f, img);
+ image_error ("Invalid image size in image `%s'",
+ img->spec, Qnil);
+ goto error;
+ }
+
for (y = 0; y < height; ++y)
for (x = 0; x < width; ++x)
{
simple transparency, we prefer a clipping mask. */
if (!transparent_p)
{
- png_color_16 *image_bg;
+ /* png_color_16 *image_bg; */
Lisp_Object specified_bg
= image_spec_value (img->spec, QCbackground, NULL);
PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
}
}
+ /* The commented-out code checked if the png specifies a default
+ background color, and uses that. Since we use the current
+ frame background, it is OK for us to ignore this.
+
else if (fn_png_get_bKGD (png_ptr, info_ptr, &image_bg))
- /* Image contains a background color with which to
- combine the image. */
fn_png_set_background (png_ptr, image_bg,
PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ */
else
{
/* Image does not contain a background color with which
/* Wrapper since we can't directly assign the function pointer
to another function pointer that was declared more completely easily. */
static boolean
-jpeg_resync_to_restart_wrapper(cinfo, desired)
+jpeg_resync_to_restart_wrapper (cinfo, desired)
j_decompress_ptr cinfo;
int desired;
{
whenever more data is needed. We read the whole image in one step,
so this only adds a fake end of input marker at the end. */
+static JOCTET omfib_buffer[2];
+
static boolean
our_memory_fill_input_buffer (cinfo)
j_decompress_ptr cinfo;
{
/* Insert a fake EOI marker. */
struct jpeg_source_mgr *src = cinfo->src;
- static JOCTET buffer[2];
- buffer[0] = (JOCTET) 0xFF;
- buffer[1] = (JOCTET) JPEG_EOI;
+ omfib_buffer[0] = (JOCTET) 0xFF;
+ omfib_buffer[1] = (JOCTET) JPEG_EOI;
- src->next_input_byte = buffer;
+ src->next_input_byte = omfib_buffer;
src->bytes_in_buffer = 2;
return 1;
}
/* Load GIF image IMG for use on frame F. Value is non-zero if
successful. */
+static int interlace_start[] = {0, 4, 2, 1};
+static int interlace_increment[] = {8, 8, 4, 2};
+
static int
gif_load (f, img)
struct frame *f;
memsrc.index = 0;
/* Casting return value avoids a GCC warning on W32. */
- gif = (GifFileType *)fn_DGifOpen(&memsrc, gif_read_from_memory);
+ gif = (GifFileType *) fn_DGifOpen (&memsrc, gif_read_from_memory);
if (!gif)
{
image_error ("Cannot open memory source `%s'", img->spec, Qnil);
init_color_table ();
bzero (pixel_colors, sizeof pixel_colors);
- for (i = 0; i < gif_color_map->ColorCount; ++i)
- {
- int r = gif_color_map->Colors[i].Red << 8;
- int g = gif_color_map->Colors[i].Green << 8;
- int b = gif_color_map->Colors[i].Blue << 8;
- pixel_colors[i] = lookup_rgb_color (f, r, g, b);
- }
+ if (gif_color_map)
+ for (i = 0; i < gif_color_map->ColorCount; ++i)
+ {
+ int r = gif_color_map->Colors[i].Red << 8;
+ int g = gif_color_map->Colors[i].Green << 8;
+ int b = gif_color_map->Colors[i].Blue << 8;
+ pixel_colors[i] = lookup_rgb_color (f, r, g, b);
+ }
#ifdef COLOR_TABLE_SUPPORT
img->colors = colors_in_color_table (&img->ncolors);
if (gif->SavedImages[ino].ImageDesc.Interlace)
{
- static int interlace_start[] = {0, 4, 2, 1};
- static int interlace_increment[] = {8, 8, 4, 2};
int pass;
int row = interlace_start[0];
\f
+/***********************************************************************
+ SVG
+ ***********************************************************************/
+
+#if defined (HAVE_RSVG)
+
+/* Function prototypes. */
+
+static int svg_image_p P_ ((Lisp_Object object));
+static int svg_load P_ ((struct frame *f, struct image *img));
+
+static int svg_load_image P_ ((struct frame *, struct image *,
+ unsigned char *, unsigned int));
+
+/* The symbol `svg' identifying images of this type. */
+
+Lisp_Object Qsvg;
+
+/* Indices of image specification fields in svg_format, below. */
+
+enum svg_keyword_index
+{
+ SVG_TYPE,
+ SVG_DATA,
+ SVG_FILE,
+ SVG_ASCENT,
+ SVG_MARGIN,
+ SVG_RELIEF,
+ SVG_ALGORITHM,
+ SVG_HEURISTIC_MASK,
+ SVG_MASK,
+ SVG_BACKGROUND,
+ SVG_LAST
+};
+
+/* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+static struct image_keyword svg_format[SVG_LAST] =
+{
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+};
+
+/* 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. */
+ NULL
+};
+
+
+/* Return non-zero 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
+svg_image_p (object)
+ Lisp_Object object;
+{
+ struct image_keyword fmt[SVG_LAST];
+ bcopy (svg_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg))
+ return 0;
+
+ /* Must specify either the :data or :file keyword. */
+ return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1;
+}
+
+#include <librsvg/rsvg.h>
+
+#ifdef HAVE_NTGUI
+
+/* SVG library functions. */
+DEF_IMGLIB_FN (rsvg_handle_new);
+DEF_IMGLIB_FN (rsvg_handle_set_size_callback);
+DEF_IMGLIB_FN (rsvg_handle_write);
+DEF_IMGLIB_FN (rsvg_handle_close);
+DEF_IMGLIB_FN (rsvg_handle_get_pixbuf);
+DEF_IMGLIB_FN (rsvg_handle_free);
+
+DEF_IMGLIB_FN (gdk_pixbuf_get_width);
+DEF_IMGLIB_FN (gdk_pixbuf_get_height);
+DEF_IMGLIB_FN (gdk_pixbuf_get_pixels);
+DEF_IMGLIB_FN (gdk_pixbuf_get_rowstride);
+DEF_IMGLIB_FN (gdk_pixbuf_get_colorspace);
+DEF_IMGLIB_FN (gdk_pixbuf_get_n_channels);
+DEF_IMGLIB_FN (gdk_pixbuf_get_has_alpha);
+DEF_IMGLIB_FN (gdk_pixbuf_get_bits_per_sample);
+
+DEF_IMGLIB_FN (g_type_init);
+DEF_IMGLIB_FN (g_object_unref);
+DEF_IMGLIB_FN (g_error_free);
+
+Lisp_Object Qgdk_pixbuf, Qglib;
+
+static int
+init_svg_functions (Lisp_Object libraries)
+{
+ HMODULE library, gdklib, glib;
+
+ if (!(glib = w32_delayed_load (libraries, Qglib))
+ || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf))
+ || !(library = w32_delayed_load (libraries, Qsvg)))
+ return 0;
+
+ LOAD_IMGLIB_FN (library, rsvg_handle_new);
+ LOAD_IMGLIB_FN (library, rsvg_handle_set_size_callback);
+ LOAD_IMGLIB_FN (library, rsvg_handle_write);
+ LOAD_IMGLIB_FN (library, rsvg_handle_close);
+ LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf);
+ LOAD_IMGLIB_FN (library, rsvg_handle_free);
+
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha);
+ LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample);
+
+ LOAD_IMGLIB_FN (glib, g_type_init);
+ LOAD_IMGLIB_FN (glib, g_object_unref);
+ LOAD_IMGLIB_FN (glib, g_error_free);
+ return 1;
+}
+
+#else
+/* The following aliases for library functions allow dynamic loading
+ to be used on some platforms. */
+#define fn_rsvg_handle_new rsvg_handle_new
+#define fn_rsvg_handle_set_size_callback rsvg_handle_set_size_callback
+#define fn_rsvg_handle_write rsvg_handle_write
+#define fn_rsvg_handle_close rsvg_handle_close
+#define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
+#define fn_rsvg_handle_free rsvg_handle_free
+
+#define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
+#define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
+#define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
+#define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
+#define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
+#define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
+#define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
+#define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
+
+#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 */
+
+/* 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. */
+
+static int
+svg_load (f, img)
+ struct frame *f;
+ struct image *img;
+{
+ int success_p = 0;
+ Lisp_Object file_name;
+
+ /* If IMG->spec specifies a file name, create a non-file spec from it. */
+ file_name = image_spec_value (img->spec, QCfile, NULL);
+ if (STRINGP (file_name))
+ {
+ Lisp_Object file;
+ unsigned char *contents;
+ int size;
+ struct gcpro gcpro1;
+
+ file = x_find_image_file (file_name);
+ GCPRO1 (file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", file_name, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Read the entire file into memory. */
+ contents = slurp_file (SDATA (file), &size);
+ if (contents == NULL)
+ {
+ image_error ("Error loading SVG image `%s'", img->spec, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ /* If the file was slurped into memory properly, parse it. */
+ success_p = svg_load_image (f, img, contents, size);
+ xfree (contents);
+ UNGCPRO;
+ }
+ /* Else its not a file, its a lisp object. Load the image from a
+ lisp object rather than a file. */
+ else
+ {
+ Lisp_Object data;
+
+ data = image_spec_value (img->spec, QCdata, NULL);
+ success_p = svg_load_image (f, img, SDATA (data), SBYTES (data));
+ }
+
+ return success_p;
+}
+
+/* svg_load_image is a helper function for svg_load, which does the
+ actual loading given contents and size, apart from frame and image
+ structures, passed from svg_load.
+
+ Uses librsvg to do most of the image processing.
+
+ Returns non-zero when successful. */
+static int
+svg_load_image (f, img, contents, size)
+ /* Pointer to emacs frame structure. */
+ struct frame *f;
+ /* Pointer to emacs image structure. */
+ struct image *img;
+ /* String containing the SVG XML data to be parsed. */
+ unsigned char *contents;
+ /* Size of data in bytes. */
+ unsigned int size;
+{
+ RsvgHandle *rsvg_handle;
+ GError *error = NULL;
+ GdkPixbuf *pixbuf;
+ int width;
+ int height;
+ const guint8 *pixels;
+ int rowstride;
+ XImagePtr ximg;
+ Lisp_Object specified_bg;
+ XColor background;
+ int x;
+ int y;
+
+ /* g_type_init is a glib function that must be called prior to using
+ gnome type library functions. */
+ fn_g_type_init ();
+ /* Make a handle to a new rsvg object. */
+ rsvg_handle = fn_rsvg_handle_new ();
+
+ /* Parse the contents argument and fill in the rsvg_handle. */
+ fn_rsvg_handle_write (rsvg_handle, contents, size, &error);
+ if (error)
+ goto rsvg_error;
+
+ /* The parsing is complete, rsvg_handle is ready to used, close it
+ for further writes. */
+ fn_rsvg_handle_close (rsvg_handle, &error);
+ if (error)
+ goto rsvg_error;
+ /* We can now get a valid pixel buffer from the svg file, if all
+ went ok. */
+ pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle);
+ eassert (pixbuf);
+
+ /* Extract some meta data from the svg handle. */
+ width = fn_gdk_pixbuf_get_width (pixbuf);
+ height = fn_gdk_pixbuf_get_height (pixbuf);
+ pixels = fn_gdk_pixbuf_get_pixels (pixbuf);
+ rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf);
+
+ /* Validate the svg meta data. */
+ eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB);
+ eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4);
+ eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf));
+ eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8);
+
+ /* Try to create a x pixmap to hold the svg pixmap. */
+ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap))
+ {
+ fn_g_object_unref (pixbuf);
+ return 0;
+ }
+
+ init_color_table ();
+
+ /* Handle alpha channel by combining the image with a background
+ color. */
+ specified_bg = image_spec_value (img->spec, QCbackground, NULL);
+ if (STRINGP (specified_bg)
+ && x_defined_color (f, SDATA (specified_bg), &background, 0))
+ {
+ background.red >>= 8;
+ background.green >>= 8;
+ background.blue >>= 8;
+ }
+ else
+ {
+#ifdef HAVE_X_WINDOWS
+ background.pixel = FRAME_BACKGROUND_PIXEL (f);
+ x_query_color (f, &background);
+
+ /* SVG pixmaps specify transparency in the last byte, so right
+ shift 8 bits to get rid of it, since emacs doesn't support
+ transparency. */
+ background.red >>= 8;
+ background.green >>= 8;
+ background.blue >>= 8;
+#elif defined (MAC_OS)
+ background.pixel = FRAME_BACKGROUND_PIXEL (f);
+ background.red = RED_FROM_ULONG (background.pixel);
+ background.green = GREEN_FROM_ULONG (background.pixel);
+ background.blue = BLUE_FROM_ULONG (background.pixel);
+#elif defined (HAVE_NTGUI)
+ background.pixel = FRAME_BACKGROUND_PIXEL (f);
+#if 0 /* W32 TODO : Colormap support. */
+ x_query_color (f, &background);
+#endif
+
+ /* SVG pixmaps specify transparency in the last byte, so right
+ shift 8 bits to get rid of it, since emacs doesn't support
+ transparency. */
+ background.red >>= 8;
+ background.green >>= 8;
+ background.blue >>= 8;
+#else /* not HAVE_X_WINDOWS && not MAC_OS*/
+#error FIXME
+#endif
+ }
+
+ /* This loop handles opacity values, since Emacs assumes
+ non-transparent images. Each pixel must be "flattened" by
+ calculating the resulting color, given the transparency of the
+ pixel, and the image background color. */
+ for (y = 0; y < height; ++y)
+ {
+ for (x = 0; x < width; ++x)
+ {
+ unsigned red;
+ unsigned green;
+ unsigned blue;
+ unsigned opacity;
+
+ red = *pixels++;
+ green = *pixels++;
+ blue = *pixels++;
+ opacity = *pixels++;
+
+ red = ((red * opacity)
+ + (background.red * ((1 << 8) - opacity)));
+ green = ((green * opacity)
+ + (background.green * ((1 << 8) - opacity)));
+ blue = ((blue * opacity)
+ + (background.blue * ((1 << 8) - opacity)));
+
+ XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue));
+ }
+
+ pixels += rowstride - 4 * width;
+ }
+
+#ifdef COLOR_TABLE_SUPPORT
+ /* Remember colors allocated for this image. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+#endif /* COLOR_TABLE_SUPPORT */
+
+ fn_g_object_unref (pixbuf);
+
+ img->width = width;
+ img->height = height;
+
+ /* Maybe fill in the background field while we have ximg handy.
+ Casting avoids a GCC warning. */
+ IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg);
+
+ /* Put the image into the pixmap, then free the X image and its
+ buffer. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+
+ return 1;
+
+ rsvg_error:
+ /* FIXME: Use error->message so the user knows what is the actual
+ problem with the image. */
+ image_error ("Error parsing SVG image `%s'", img->spec, Qnil);
+ fn_g_error_free (error);
+ return 0;
+}
+
+#endif /* defined (HAVE_RSVG) */
+
+
+
+\f
/***********************************************************************
Ghostscript
***********************************************************************/
return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries);
#endif
+#if defined (HAVE_RSVG)
+ if (EQ (type, Qsvg))
+ return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries);
+#endif
+
#ifdef HAVE_GHOSTSCRIPT
if (EQ (type, Qpostscript))
return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries);
defining the supported image types. */
DEFVAR_LISP ("image-types", &Vimage_types,
doc: /* List of potentially supported image types.
-Each element of the list is a symbol for a image type, like 'jpeg or 'png.
+Each element of the list is a symbol for an image type, like 'jpeg or 'png.
To check whether it is really supported, use `image-type-available-p'. */);
Vimage_types = Qnil;
Emacs tries to load the libraries in the order they appear on the
list; if none is loaded, the running session of Emacs won't
support the image type. Types 'pbm and 'xbm don't need to be
-listed; they're always supported. */);
+listed; they are always supported. */);
Vimage_library_alist = Qnil;
Fput (intern ("image-library-alist"), Qrisky_local_variable, Qt);
Qpbm = intern ("pbm");
staticpro (&Qpbm);
- ADD_IMAGE_TYPE(Qpbm);
+ ADD_IMAGE_TYPE (Qpbm);
Qxbm = intern ("xbm");
staticpro (&Qxbm);
- ADD_IMAGE_TYPE(Qxbm);
+ ADD_IMAGE_TYPE (Qxbm);
define_image_type (&xbm_type, 1);
define_image_type (&pbm_type, 1);
Qpostscript = intern ("postscript");
staticpro (&Qpostscript);
#ifdef HAVE_GHOSTSCRIPT
- ADD_IMAGE_TYPE(Qpostscript);
+ ADD_IMAGE_TYPE (Qpostscript);
QCloader = intern (":loader");
staticpro (&QCloader);
QCbounding_box = intern (":bounding-box");
#if defined (HAVE_XPM) || defined (MAC_OS)
Qxpm = intern ("xpm");
staticpro (&Qxpm);
- ADD_IMAGE_TYPE(Qxpm);
+ ADD_IMAGE_TYPE (Qxpm);
#endif
#if defined (HAVE_JPEG) || defined (MAC_OS)
Qjpeg = intern ("jpeg");
staticpro (&Qjpeg);
- ADD_IMAGE_TYPE(Qjpeg);
+ ADD_IMAGE_TYPE (Qjpeg);
#endif
#if defined (HAVE_TIFF) || defined (MAC_OS)
Qtiff = intern ("tiff");
staticpro (&Qtiff);
- ADD_IMAGE_TYPE(Qtiff);
+ ADD_IMAGE_TYPE (Qtiff);
#endif
#if defined (HAVE_GIF) || defined (MAC_OS)
Qgif = intern ("gif");
staticpro (&Qgif);
- ADD_IMAGE_TYPE(Qgif);
+ ADD_IMAGE_TYPE (Qgif);
#endif
#if defined (HAVE_PNG) || defined (MAC_OS)
Qpng = intern ("png");
staticpro (&Qpng);
- ADD_IMAGE_TYPE(Qpng);
+ ADD_IMAGE_TYPE (Qpng);
#endif
+#if defined (HAVE_RSVG)
+ Qsvg = intern ("svg");
+ staticpro (&Qsvg);
+ ADD_IMAGE_TYPE (Qsvg);
+#ifdef HAVE_NTGUI
+ Qgdk_pixbuf = intern ("gdk-pixbuf");
+ staticpro (&Qgdk_pixbuf);
+ Qglib = intern ("glib");
+ staticpro (&Qglib);
+#endif /* HAVE_NTGUI */
+#endif /* HAVE_RSVG */
+
defsubr (&Sinit_image_library);
defsubr (&Sclear_image_cache);
+ defsubr (&Simage_refresh);
defsubr (&Simage_size);
defsubr (&Simage_mask_p);
defsubr (&Simage_extension_data);
DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images,
doc: /* Non-nil means always draw a cross over disabled images.
-Disabled images are those having an `:conversion disabled' property.
+Disabled images are those having a `:conversion disabled' property.
A cross is always drawn on black & white displays. */);
cross_disabled_images = 0;
HCoop / bpt / emacs.git / blobdiff