[Chrome] Support NumCopies print preset

pdf/instance.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "pdf/instance.h"
 
 #include <algorithm>  // for min()
 #define _USE_MATH_DEFINES  // for M_PI
 #include <cmath>      // for log() and pow()
 #include <math.h>
@@ skipping 170 matching lines @@
   { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
   { kZoomInButtonId, Button::BUTTON_CLICKABLE,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
       PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
 };
 
-static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
+static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1_1;
 
 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
   pp::Var var;
   void* object =
       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
   if (object)
     var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
   return var.Detach();
 }
 
 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
   void* object =
       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
   if (object) {
     Instance* obj_instance = static_cast<Instance*>(object);
     switch (type) {
       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
         obj_instance->RotateClockwise();
         break;
       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
         obj_instance->RotateCounterclockwise();
         break;
     }
   }
 }
 
+PP_Bool GetPrintPresetOptionsFromDocument(PP_Instance instance,
+                                          PP_PrintPresetOptions_Dev* options) {
+  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  PP_Bool ret = PP_FALSE;
+  if (object) {
+    Instance* obj_instance = static_cast<Instance*>(object);
+    ret = obj_instance->GetPrintPresetOptionsFromDocument(options);
+  }
+  return ret;
+}
+
 const PPP_Pdf ppp_private = {
   &GetLinkAtPosition,
-  &Transform
+  &Transform,
+  &GetPrintPresetOptionsFromDocument
 };
 
 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
   std::vector<std::string> url_substr;
   base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
   if (url_substr.size() != 3)
     return -1;
 
   if (url_substr[2] != "print.pdf")
@@ skipping 414 matching lines @@
 pp::Var Instance::GetInstanceObject() {
   if (instance_object_.is_undefined()) {
     PDFScriptableObject* object = new PDFScriptableObject(this);
     // The pp::Var takes ownership of object here.
     instance_object_ = pp::VarPrivate(this, object);
   }
 
   return instance_object_;
 }
 
+PP_Bool Instance::GetPrintPresetOptionsFromDocument(
+    PP_PrintPresetOptions_Dev* options) {
+  options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
+  options->copies = engine_->GetCopiesToPrint();
+
+  return PP_TRUE;

[raymes, 2014/09/24 04:54:39]

If the return value is always PP_TRUE, we might as well get rid of it?

[Nikhil, 2014/09/29 11:15:30]

I think it can be removed. I'm not sure about behavior for page_range so I
maintained bool return type for now. 

But since there seems to be no backward compatibility or versioning issues with
PPP_Pdf then maybe make void now? And change to bool, if required when adding
support for page_range?

This affects blink changes though.

Please let me know WDYT.

[raymes, 2014/10/01 17:26:23]

If you want to keep the PP_Bool in the API, that's ok but this part isn't in the
API so we could just remove the return value here for now and always return
PP_TRUE from GetPrintPresetOptionsFromDocument above. It's a minor thing.

[Nikhil, 2014/10/07 09:53:37]

Done.

+}
+
 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
   pp::Point offset_point(point);
   ScalePoint(device_scale_, &offset_point);
   offset_point.set_x(offset_point.x() - available_area_.x());
   return engine_->GetLinkAtPosition(offset_point);
 }
 
 pp::Var Instance::GetSelectedText(bool html) {
   if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
     return pp::Var();
@@ skipping 2086 matching lines @@
   return instance_->HasScriptableMethod(name, exception);
 }
 
 pp::Var PDFScriptableObject::Call(const pp::Var& method,
                                   const std::vector<pp::Var>& args,
                                   pp::Var* exception) {
   return instance_->CallScriptableMethod(method, args, exception);
 }
 
 }  // namespace chrome_pdf