Added support to the Windows cloud print proxy to print XPS documents directly without any conversion (only works on Windows 7). The proxy uses the Accept: header to specify what data types it can accept.

BUG=None.
TEST=When the cloud print service supports this, submitting an XPS document should go through to the Win 7 proxy without any conversions.

Review URL: http://codereview.chromium.org/6523040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@75286 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 78 insertions, 0 deletions

diff --git a/printing/backend/win_helper.cc b/printing/backend/win_helper.cc
index e63b45f..b163a65 100644
--- a/printing/backend/win_helper.cc
+++ b/printing/backend/win_helper.cc
@@ -37,6 +37,17 @@ typedef HRESULT (WINAPI *PTMergeAndValidatePrintTicketProc)(
     BSTR* error_message);
 typedef HRESULT (WINAPI *PTReleaseMemoryProc)(PVOID buffer);
 typedef HRESULT (WINAPI *PTCloseProviderProc)(HPTPROVIDER provider);
+typedef HRESULT (WINAPI *StartXpsPrintJobProc)(
+    const LPCWSTR printer_name,
+    const LPCWSTR job_name,
+    const LPCWSTR output_file_name,
+    HANDLE progress_event,
+    HANDLE completion_event,
+    UINT8 *printable_pages_on,
+    UINT32 printable_pages_on_count,
+    IXpsPrintJob **xps_print_job,
+    IXpsPrintJobStream **document_stream,
+    IXpsPrintJobStream **print_ticket_stream);
 
 PTOpenProviderProc g_open_provider_proc = NULL;
 PTGetPrintCapabilitiesProc g_get_print_capabilities_proc = NULL;
@@ -45,6 +56,7 @@ PTConvertPrintTicketToDevModeProc g_convert_print_ticket_to_devmode_proc = NULL;
 PTMergeAndValidatePrintTicketProc g_merge_and_validate_print_ticket_proc = NULL;
 PTReleaseMemoryProc g_release_memory_proc = NULL;
 PTCloseProviderProc g_close_provider_proc = NULL;
+StartXpsPrintJobProc g_start_xps_print_job_proc = NULL;
 }
 
 namespace printing {
@@ -207,4 +219,45 @@ ScopedXPSInitializer::~ScopedXPSInitializer() {
   initialized_ = false;
 }
 
+bool XPSPrintModule::Init() {
+  static bool initialized = InitImpl();
+  return initialized;
+}
+
+bool XPSPrintModule::InitImpl() {
+  HMODULE xpsprint_module = LoadLibrary(L"xpsprint.dll");
+  if (xpsprint_module == NULL)
+    return false;
+  g_start_xps_print_job_proc = reinterpret_cast<StartXpsPrintJobProc>(
+      GetProcAddress(xpsprint_module, "StartXpsPrintJob"));
+  if (!g_start_xps_print_job_proc) {
+    NOTREACHED();
+    return false;
+  }
+  return true;
+}
+
+HRESULT XPSPrintModule::StartXpsPrintJob(
+    const LPCWSTR printer_name,
+    const LPCWSTR job_name,
+    const LPCWSTR output_file_name,
+    HANDLE progress_event,
+    HANDLE completion_event,
+    UINT8 *printable_pages_on,
+    UINT32 printable_pages_on_count,
+    IXpsPrintJob **xps_print_job,
+    IXpsPrintJobStream **document_stream,
+    IXpsPrintJobStream **print_ticket_stream) {
+  return g_start_xps_print_job_proc(printer_name,
+                                    job_name,
+                                    output_file_name,
+                                    progress_event,
+                                    completion_event,
+                                    printable_pages_on,
+                                    printable_pages_on_count,
+                                    xps_print_job,
+                                    document_stream,
+                                    print_ticket_stream);
+}
+
 }  // namespace printing
diff --git a/printing/backend/win_helper.h b/printing/backend/win_helper.h
index 891f833..28e57f7 100644
--- a/printing/backend/win_helper.h
+++ b/printing/backend/win_helper.h
@@ -9,6 +9,7 @@
 #include <objidl.h>
 #include <winspool.h>
 #include <prntvpt.h>
+#include <xpsprint.h>
 
 #include "base/string16.h"
 
@@ -70,6 +71,30 @@ class ScopedXPSInitializer {
   bool initialized_;
 };
 
+// Wrapper class to wrap the XPS Print APIs (these are different from the PTxxx
+// which deal with the XML Print Schema). This is needed because these
+// APIs are only available on Windows 7 and higher.
+class XPSPrintModule {
+ public:
+  // All the other methods can ONLY be called after a successful call to Init.
+  // Init can be called many times and by multiple threads.
+  static bool Init();
+  static HRESULT StartXpsPrintJob(
+      const LPCWSTR printer_name,
+      const LPCWSTR job_name,
+      const LPCWSTR output_file_name,
+      HANDLE progress_event,
+      HANDLE completion_event,
+      UINT8 *printable_pages_on,
+      UINT32 printable_pages_on_count,
+      IXpsPrintJob **xps_print_job,
+      IXpsPrintJobStream **document_stream,
+      IXpsPrintJobStream **print_ticket_stream);
+ private:
+  XPSPrintModule() { }
+  static bool InitImpl();
+};
+
 }  // namespace printing
 
 #endif  // PRINTING_BACKEND_WIN_HELPER_H_