Add fz_begin_layer/fz_end_layer.

Call these from the PDF interpreter. Make the DisplayList and
Trace devices cope.

Use these in the SVG output device.

1 files changed, 17 insertions, 0 deletions

diff --git a/source/fitz/trace-device.c b/source/fitz/trace-device.c
index 65c91924..59d625c7 100644
--- a/source/fitz/trace-device.c
+++ b/source/fitz/trace-device.c
@@ -348,6 +348,20 @@ fz_trace_end_tile(fz_context *ctx, fz_device *dev)
 	fz_write_printf(ctx, out, "</tile>\n");
 }
 
+static void
+fz_trace_begin_layer(fz_context *ctx, fz_device *dev, const char *name)
+{
+	fz_output *out = ((fz_trace_device*)dev)->out;
+	fz_write_printf(ctx, out, "<layer name=\"%s\">\n", name);
+}
+
+static void
+fz_trace_end_layer(fz_context *ctx, fz_device *dev)
+{
+	fz_output *out = ((fz_trace_device*)dev)->out;
+	fz_write_printf(ctx, out, "</layer>\n");
+}
+
 fz_device *fz_new_trace_device(fz_context *ctx, fz_output *out)
 {
 	fz_trace_device *dev = fz_new_derived_device(ctx, fz_trace_device);
@@ -378,6 +392,9 @@ fz_device *fz_new_trace_device(fz_context *ctx, fz_output *out)
 	dev->super.begin_tile = fz_trace_begin_tile;
 	dev->super.end_tile = fz_trace_end_tile;
 
+	dev->super.begin_layer = fz_trace_begin_layer;
+	dev->super.end_layer = fz_trace_end_layer;
+
 	dev->out = out;
 
 	return (fz_device*)dev;