169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
#include "svgpaintable.h"
|
|
|
|
#include <gtk/gtk.h>
|
|
#include <librsvg/rsvg.h>
|
|
|
|
struct _SvgPaintable
|
|
{
|
|
GObject parent_instance;
|
|
GFile *file;
|
|
RsvgHandle *handle;
|
|
};
|
|
|
|
struct _SvgPaintableClass
|
|
{
|
|
GObjectClass parent_class;
|
|
};
|
|
|
|
enum {
|
|
PROP_FILE = 1,
|
|
NUM_PROPERTIES
|
|
};
|
|
|
|
static void
|
|
svg_paintable_snapshot (GdkPaintable *paintable,
|
|
GdkSnapshot *snapshot,
|
|
double width,
|
|
double height)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (paintable);
|
|
cairo_t *cr;
|
|
GError *error = NULL;
|
|
|
|
cr = gtk_snapshot_append_cairo (GTK_SNAPSHOT (snapshot),
|
|
&GRAPHENE_RECT_INIT (0, 0, width, height));
|
|
|
|
if (!rsvg_handle_render_document (self->handle, cr,
|
|
&(RsvgRectangle) {0, 0, width, height},
|
|
&error))
|
|
{
|
|
g_error ("%s", error->message);
|
|
}
|
|
|
|
cairo_destroy (cr);
|
|
}
|
|
|
|
static int
|
|
svg_paintable_get_intrinsic_width (GdkPaintable *paintable)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (paintable);
|
|
double width;
|
|
|
|
if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, &width, NULL))
|
|
return 0;
|
|
|
|
return ceil (width);
|
|
}
|
|
|
|
static int
|
|
svg_paintable_get_intrinsic_height (GdkPaintable *paintable)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (paintable);
|
|
double height;
|
|
|
|
if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, NULL, &height))
|
|
return 0;
|
|
|
|
return ceil (height);
|
|
}
|
|
|
|
static void
|
|
svg_paintable_init_interface (GdkPaintableInterface *iface)
|
|
{
|
|
iface->snapshot = svg_paintable_snapshot;
|
|
iface->get_intrinsic_width = svg_paintable_get_intrinsic_width;
|
|
iface->get_intrinsic_height = svg_paintable_get_intrinsic_height;
|
|
}
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (SvgPaintable, svg_paintable, G_TYPE_OBJECT,
|
|
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
|
|
svg_paintable_init_interface))
|
|
|
|
static void
|
|
svg_paintable_init (SvgPaintable *self)
|
|
{
|
|
}
|
|
|
|
static void
|
|
svg_paintable_dispose (GObject *object)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (object);
|
|
|
|
g_clear_object (&self->file);
|
|
g_clear_object (&self->handle);
|
|
|
|
G_OBJECT_CLASS (svg_paintable_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
svg_paintable_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_FILE:
|
|
{
|
|
GFile *file = g_value_get_object (value);
|
|
RsvgHandle *handle = rsvg_handle_new_from_gfile_sync (file,
|
|
RSVG_HANDLE_FLAGS_NONE,
|
|
NULL,
|
|
NULL);
|
|
rsvg_handle_set_dpi (handle, 90);
|
|
|
|
g_set_object (&self->file, file);
|
|
g_set_object (&self->handle, handle);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static void
|
|
svg_paintable_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
SvgPaintable *self = SVG_PAINTABLE (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_FILE:
|
|
g_value_set_object (value, self->file);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
svg_paintable_class_init (SvgPaintableClass *class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
|
|
|
object_class->dispose = svg_paintable_dispose;
|
|
object_class->set_property = svg_paintable_set_property;
|
|
object_class->get_property = svg_paintable_get_property;
|
|
|
|
g_object_class_install_property (object_class, PROP_FILE,
|
|
g_param_spec_object ("file", "File", "File",
|
|
G_TYPE_FILE,
|
|
G_PARAM_READWRITE));
|
|
}
|
|
|
|
GdkPaintable *
|
|
svg_paintable_new (GFile *file)
|
|
{
|
|
return g_object_new (SVG_TYPE_PAINTABLE,
|
|
"file", file,
|
|
NULL);
|
|
}
|