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rendernode-tool: add support for rendering to PDF

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This commit is contained in:
Christian Hergert 2024-04-14 22:29:52 -07:00 committed by Matthias Clasen
parent f2588532c0
commit a2336d908f
1 changed files with 60 additions and 1 deletions
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61
tools/gtk-rendernode-tool-render.c
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@ -31,6 +31,9 @@
#ifdef CAIRO_HAS_SVG_SURFACE
#include <cairo-svg.h>
#endif
#ifdef CAIRO_HAS_PDF_SURFACE
#include <cairo-pdf.h>
#endif
static char *
get_save_filename (const char *filename)
@ -51,7 +54,7 @@ get_save_filename (const char *filename)
return result;
}
#ifdef CAIRO_HAS_SVG_SURFACE
#if defined(CAIRO_HAS_SVG_SURFACE) || defined(CAIRO_HAS_PDF_SURFACE)
static cairo_status_t
cairo_serializer_write (gpointer user_data,
const unsigned char *data,
@ -61,7 +64,9 @@ cairo_serializer_write (gpointer user_data,
return CAIRO_STATUS_SUCCESS;
}
#endif
#ifdef CAIRO_HAS_SVG_SURFACE
static GBytes *
create_svg (GskRenderNode *node,
GError **error)
@ -103,6 +108,48 @@ create_svg (GskRenderNode *node,
}
#endif
#ifdef CAIRO_HAS_PDF_SURFACE
static GBytes *
create_pdf (GskRenderNode *node,
GError **error)
{
cairo_surface_t *surface;
cairo_t *cr;
graphene_rect_t bounds;
GByteArray *array;
gsk_render_node_get_bounds (node, &bounds);
array = g_byte_array_new ();
surface = cairo_pdf_surface_create_for_stream (cairo_serializer_write,
array,
bounds.size.width,
bounds.size.height);
cairo_surface_set_device_offset (surface, -bounds.origin.x, -bounds.origin.y);
cr = cairo_create (surface);
gsk_render_node_draw (node, cr);
cairo_show_page (cr);
cairo_destroy (cr);
cairo_surface_finish (surface);
if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (surface);
return g_byte_array_free_to_bytes (array);
}
else
{
g_set_error (error,
G_IO_ERROR, G_IO_ERROR_FAILED,
"%s", cairo_status_to_string (cairo_surface_status (surface)));
cairo_surface_destroy (surface);
g_byte_array_unref (array);
return NULL;
}
}
#endif
static void
render_file (const char *filename,
const char *renderer_name,
@ -139,6 +186,18 @@ render_file (const char *filename,
}
}
else
#endif
#ifdef CAIRO_HAS_PDF_SURFACE
if (g_str_has_suffix (save_to, ".pdf"))
{
bytes = create_pdf (node, &error);
if (bytes == NULL)
{
g_printerr (_("Failed to generate SVG: %s\n"), error->message);
exit (1);
}
}
else
#endif
{
GdkTexture *texture;