Add rebinding for fz_devices and fz_documents

The SVG device needs rebinding as it holds a file. The PDF device needs
to rebind the underlying pdf document.

All documents need to rebind their underlying streams.

8 files changed, 69 insertions, 0 deletions

diff --git a/source/cbz/mucbz.c b/source/cbz/mucbz.c
index 5247a4ee..4ebb623a 100644
--- a/source/cbz/mucbz.c
+++ b/source/cbz/mucbz.c
@@ -413,6 +413,13 @@ cbz_meta(cbz_document *doc, int key, void *ptr, int size)
 }
 
 static void
+cbz_rebind(cbz_document *doc, fz_context *ctx)
+{
+	doc->ctx = ctx;
+	fz_rebind_stream(doc->file, ctx);
+}
+
+static void
 cbz_init_document(cbz_document *doc)
 {
 	doc->super.close = (void*)cbz_close_document;
@@ -422,4 +429,5 @@ cbz_init_document(cbz_document *doc)
 	doc->super.run_page_contents = (void*)cbz_run_page;
 	doc->super.free_page = (void*)cbz_free_page;
 	doc->super.meta = (void*)cbz_meta;
+	doc->super.rebind = (void *)cbz_rebind;
 }
diff --git a/source/fitz/device.c b/source/fitz/device.c
index fa428764..d9249732 100644
--- a/source/fitz/device.c
+++ b/source/fitz/device.c
@@ -36,6 +36,16 @@ fz_disable_device_hints(fz_device *dev, int hints)
 }
 
 void
+fz_rebind_device(fz_device *dev, fz_context *ctx)
+{
+	if (dev == NULL)
+		return;
+	dev->ctx = ctx;
+	if (dev->rebind)
+		dev->rebind(dev);
+}
+
+void
 fz_begin_page(fz_device *dev, const fz_rect *rect, const fz_matrix *ctm)
 {
 	if (dev->begin_page)
diff --git a/source/fitz/document.c b/source/fitz/document.c
index 3926255b..a86c2f6e 100644
--- a/source/fitz/document.c
+++ b/source/fitz/document.c
@@ -102,6 +102,13 @@ fz_close_document(fz_document *doc)
 		doc->close(doc);
 }
 
+void
+fz_rebind_document(fz_document *doc, fz_context *ctx)
+{
+	if (doc != NULL && doc->rebind != NULL)
+		doc->rebind(doc, ctx);
+}
+
 int
 fz_needs_password(fz_document *doc)
 {
diff --git a/source/fitz/svg-device.c b/source/fitz/svg-device.c
index dd5a2e19..dc248f88 100644
--- a/source/fitz/svg-device.c
+++ b/source/fitz/svg-device.c
@@ -1027,6 +1027,15 @@ svg_dev_free_user(fz_device *dev)
 	fz_free(ctx, sdev);
 }
 
+void svg_rebind(fz_device *dev)
+{
+	svg_device *sdev = dev->user;
+
+	sdev->ctx = dev->ctx;
+	fz_rebind_output(sdev->out, sdev->ctx);
+	fz_rebind_output(sdev->out_store, sdev->ctx);
+}
+
 fz_device *fz_new_svg_device(fz_context *ctx, fz_output *out, float page_width, float page_height)
 {
 	svg_device *sdev = fz_malloc_struct(ctx, svg_device);
@@ -1047,6 +1056,7 @@ fz_device *fz_new_svg_device(fz_context *ctx, fz_output *out, float page_width,
 		fz_rethrow(ctx);
 	}
 
+	dev->rebind = svg_rebind;
 	dev->free_user = svg_dev_free_user;
 
 	dev->fill_path = svg_dev_fill_path;
diff --git a/source/img/muimage.c b/source/img/muimage.c
index 759653a7..7a6dfc3a 100644
--- a/source/img/muimage.c
+++ b/source/img/muimage.c
@@ -136,6 +136,13 @@ image_meta(image_document *doc, int key, void *ptr, int size)
 }
 
 static void
+image_rebind(image_document *doc, fz_context *ctx)
+{
+	doc->ctx = ctx;
+	fz_rebind_stream(doc->file, ctx);
+}
+
+static void
 image_init_document(image_document *doc)
 {
 	doc->super.close = (void*)image_close_document;
@@ -145,4 +152,5 @@ image_init_document(image_document *doc)
 	doc->super.run_page_contents = (void*)image_run_page;
 	doc->super.free_page = (void*)image_free_page;
 	doc->super.meta = (void*)image_meta;
+	doc->super.rebind = (void*)image_rebind;
 }
diff --git a/source/pdf/pdf-device.c b/source/pdf/pdf-device.c
index 39c19627..633d9975 100644
--- a/source/pdf/pdf-device.c
+++ b/source/pdf/pdf-device.c
@@ -1277,6 +1277,14 @@ pdf_dev_free_user(fz_device *dev)
 	fz_free(ctx, pdev);
 }
 
+static void
+pdf_dev_rebind(fz_device *dev)
+{
+	pdf_device *pdev = dev->user;
+
+	fz_rebind_document((fz_document *)pdev->doc, dev->ctx);
+}
+
 fz_device *pdf_new_pdf_device(pdf_document *doc, pdf_obj *contents, pdf_obj *resources, const fz_matrix *ctm)
 {
 	fz_context *ctx = doc->ctx;
@@ -1313,6 +1321,7 @@ fz_device *pdf_new_pdf_device(pdf_document *doc, pdf_obj *contents, pdf_obj *res
 		fz_rethrow(ctx);
 	}
 
+	dev->rebind = pdf_dev_rebind;
 	dev->free_user = pdf_dev_free_user;
 
 	dev->fill_path = pdf_dev_fill_path;
diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c
index a71dc1cf..523dd1f3 100644
--- a/source/pdf/pdf-xref.c
+++ b/source/pdf/pdf-xref.c
@@ -1941,6 +1941,13 @@ pdf_page_presentation(pdf_document *doc, pdf_page *page, float *duration)
 	return &page->transition;
 }
 
+static void
+pdf_rebind(pdf_document *doc, fz_context *ctx)
+{
+	doc->ctx = ctx;
+	fz_rebind_stream(doc->file, ctx);
+}
+
 /*
 	Initializers for the fz_document interface.
 
@@ -1973,6 +1980,7 @@ pdf_new_document(fz_context *ctx, fz_stream *file)
 	doc->super.meta = (void*)pdf_meta;
 	doc->super.page_presentation = (void*)pdf_page_presentation;
 	doc->super.write = (void*)pdf_write_document;
+	doc->super.rebind = (void*)pdf_rebind;
 
 	pdf_lexbuf_init(ctx, &doc->lexbuf.base, PDF_LEXBUF_LARGE);
 	doc->file = fz_keep_stream(file);
diff --git a/source/xps/xps-zip.c b/source/xps/xps-zip.c
index 70b643af..c9dc9840 100644
--- a/source/xps/xps-zip.c
+++ b/source/xps/xps-zip.c
@@ -683,6 +683,14 @@ xps_meta(xps_document *doc, int key, void *ptr, int size)
 }
 
 static void
+xps_rebind(xps_document *doc, fz_context *ctx)
+{
+	doc->ctx = ctx;
+	fz_rebind_stream(doc->file, ctx);
+	fz_rebind_device(doc->dev, ctx);
+}
+
+static void
 xps_init_document(xps_document *doc)
 {
 	doc->super.close = (void*)xps_close_document;
@@ -694,4 +702,5 @@ xps_init_document(xps_document *doc)
 	doc->super.run_page_contents = (void*)xps_run_page;
 	doc->super.free_page = (void*)xps_free_page;
 	doc->super.meta = (void*)xps_meta;
+	doc->super.rebind = (void*)xps_rebind;
 }