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Fixes to rsvg renderer. Now mostly works for direct (non-embedded in a document) viewing.

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svn path=/trunk/netsurf/; revision=3438
This commit is contained in:
Rob Kendrick 2007-07-18 23:57:39 +00:00
parent 3e3a9efd00
commit 8aa4b9e7b3
1 changed files with 32 additions and 47 deletions
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79
image/rsvg.c
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@ -20,6 +20,7 @@
#ifdef WITH_RSVG
#include <stdbool.h>
#include <assert.h>
#include <sys/types.h>
#include <librsvg/rsvg.h>
@ -35,34 +36,17 @@
#include "utils/talloc.h"
static inline void rsvg_argb_to_abgr(u_int32_t pixels[], int width, int height,
int rowstride);
static void rsvg_size_func(gint *width, gint *height, gpointer user_data);
/** Callback called by librsvg when it has determined the graphic's natural
* size.
*
* \param width Pointer to graphic's natual width. Change this to
* change what size we'd like librsvg to render it
* \param height Pointer to the graphic's natual height. Change this to
* change what size we'd like librsvg to redner it
* \param user_data User-specific context, in this case it contains the
* pointer to the content object
*/
static void rsvg_size_func(gint *width, gint *height, gpointer user_data)
{
struct content *c = (struct content *)user_data;
LOG(("svg image's natural size is %d x %d", *width, *height));
c->width = *width;
c->height = *height;
}
size_t rowstride);
bool rsvg_create(struct content *c, const char *params[])
{
struct content_rsvg_data *d = &c->data.rsvg;
union content_msg_data msg_data;
LOG(("!!!!!!!!!!!!!!!!!!!!!!!!!!!!"));
d->rsvgh = NULL;
d->cs = NULL;
d->ct = NULL;
d->bitmap = NULL;
if ((d->rsvgh = rsvg_handle_new()) == NULL) {
LOG(("rsvg_handle_new() returned NULL."));
@ -71,13 +55,11 @@ bool rsvg_create(struct content *c, const char *params[])
return false;
}
rsvg_handle_set_size_callback(d->rsvgh, rsvg_size_func, c, NULL);
return true;
}
/** Convert Cairo's ARGB output to NetSurf's favoured ABGR format. It converts
* the data in-place.
* the data in-place. Operation is endian-swap and rotate right 8 bits.
*
* \param pixels Array of 32-bit values, in the form of ARGB. This will
* be overwritten with new data in the form of ABGR.
@ -87,7 +69,7 @@ bool rsvg_create(struct content *c, const char *params[])
* implementation requires this to be a multiple of 4.)
*/
static inline void rsvg_argb_to_abgr(u_int32_t pixels[], int width, int height,
int rowstride)
size_t rowstride)
{
u_int32_t *p = &pixels[0];
@ -100,7 +82,7 @@ static inline void rsvg_argb_to_abgr(u_int32_t pixels[], int width, int height,
((e & 0xff000000) >> 24));
p[x] = (s >> 8) | (s << 24);
}
p += rowstride;
p += (rowstride >> 2);
}
}
@ -108,30 +90,39 @@ bool rsvg_convert(struct content *c, int iwidth, int iheight)
{
struct content_rsvg_data *d = &c->data.rsvg;
union content_msg_data msg_data;
RsvgDimensionData rsvgsize;
GError *err = NULL;
if (rsvg_handle_write(d->rsvgh, (guchar *)c->source_data,
(gsize)c->source_size, &err)
== FALSE) {
(gsize)c->source_size, &err) == FALSE) {
LOG(("rsvg_handle_write returned an error: %s", err->message));
rsvg_handle_free(d->rsvgh);
msg_data.error = err->message;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
assert(err == NULL);
if (rsvg_handle_close(d->rsvgh, &err) == FALSE) {
LOG(("rsvg_handle_close returned an error: %s", err->message));
rsvg_handle_free(d->rsvgh);
msg_data.error = err->message;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
assert(err == NULL);
/* we should now be able to query librsvg for the natural size of the
* graphic, so we can create our bitmap.
*/
rsvg_handle_get_dimensions(d->rsvgh, &rsvgsize);
c->width = rsvgsize.width;
c->height = rsvgsize.height;
if ((d->bitmap = bitmap_create(c->width, c->height,
BITMAP_NEW)) == NULL) {
LOG(("Failed to create bitmap for rsvg render."));
rsvg_handle_free(d->rsvgh);
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
@ -143,28 +134,22 @@ bool rsvg_convert(struct content *c, int iwidth, int iheight)
c->width, c->height,
bitmap_get_rowstride(d->bitmap))) == NULL) {
LOG(("Failed to create Cairo image surface for rsvg render."));
bitmap_destroy(d->bitmap);
rsvg_handle_free(d->rsvgh);
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
}
if ((d->ct = cairo_create(d->cs)) == NULL) {
LOG(("Failed to create Cairo drawing context for rsvg render."));
bitmap_destroy(d->bitmap);
rsvg_handle_free(d->rsvgh);
cairo_surface_destroy(d->cs);
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
rsvg_handle_render_cairo(d->rsvgh, d->ct);
/* TODO: This currently segfaults */
// rsvg_argb_to_abgr((u_int32_t *)bitmap_get_buffer(d->bitmap),
// c->width, c->height,
// bitmap_get_rowstride(d->bitmap));
rsvg_argb_to_abgr((u_int32_t *)bitmap_get_buffer(d->bitmap),
c->width, c->height,
bitmap_get_rowstride(d->bitmap));
c->bitmap = d->bitmap;
c->status = CONTENT_STATUS_DONE;
@ -192,10 +177,10 @@ void rsvg_destroy(struct content *c)
{
struct content_rsvg_data *d = &c->data.rsvg;
bitmap_destroy(d->bitmap);
rsvg_handle_free(d->rsvgh);
cairo_destroy(d->ct);
cairo_surface_destroy(d->cs);
if (d->bitmap != NULL) bitmap_destroy(d->bitmap);
if (d->rsvgh != NULL) rsvg_handle_free(d->rsvgh);
if (d->ct != NULL) cairo_destroy(d->ct);
if (d->cs != NULL) cairo_surface_destroy(d->cs);
return;
}