electron/atom/browser/atom_print_preview_message_handler.cc
Heilig Benedek a82bcc7e3c refactor: move printing out of chromium_src (#15023)
* remove printing related things from chromium_src

* chore: add printing build flag and patch

* fix: include PrintingService on other platforms too

* fix: printing_handler is only needed on Windows

* fix: format BUILD.gn properly

* fix: rename printing build flag to avoid conflict with chromium

* fix: place previously missed printing calls behind build flag

* fix: accidentally renamed flag in patch file

* fix: don't include all printing strings

* fix: allow ShowItemInFolder and OpenItem to block, fixing a DCHECK crash

* fix: make things compile, some changes got lost while rebasing

* fix: remove rogue line from BUILD.gn

* chore: update patch description

* style: lint fix

* chore: use chromium printing buildflag, move node related stuff out of patch

* revert: remove ScopedAllowBlockingForTesting call

* fix: fix my rebase blooper

* fix: re-add header lost during rebase, update patch

* fix: add <map> include, tweak the patch a bit

* revert: remove rogue diff from patch

* fix: clean up after rebase
2018-10-13 12:57:04 +11:00

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4.9 KiB
C++

// 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 "atom/browser/atom_print_preview_message_handler.h"
#include <stdint.h>
#include <memory>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "base/memory/ref_counted_memory.h"
#include "base/memory/shared_memory.h"
#include "base/memory/shared_memory_handle.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/printing/print_job_manager.h"
#include "chrome/browser/printing/print_preview_dialog_controller.h"
#include "chrome/browser/printing/print_view_manager.h"
#include "chrome/browser/printing/printer_query.h"
#include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
#include "components/printing/browser/print_composite_client.h"
#include "components/printing/browser/print_manager_utils.h"
#include "components/printing/common/print_messages.h"
#include "components/services/pdf_compositor/public/cpp/pdf_service_mojo_types.h"
#include "components/services/pdf_compositor/public/cpp/pdf_service_mojo_utils.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "printing/page_size_margins.h"
#include "printing/print_job_constants.h"
#include "printing/print_settings.h"
#include "atom/common/node_includes.h"
using content::BrowserThread;
using content::WebContents;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(atom::AtomPrintPreviewMessageHandler);
namespace atom {
namespace {
char* CopyPDFDataOnIOThread(
const PrintHostMsg_DidPreviewDocument_Params& params) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
const PrintHostMsg_DidPrintContent_Params& content = params.content;
std::unique_ptr<base::SharedMemory> shared_buf(
new base::SharedMemory(content.metafile_data_handle, true));
if (!shared_buf->Map(content.data_size))
return nullptr;
char* pdf_data = new char[content.data_size];
memcpy(pdf_data, shared_buf->memory(), content.data_size);
return pdf_data;
}
void FreeNodeBufferData(char* data, void* hint) {
delete[] data;
}
} // namespace
AtomPrintPreviewMessageHandler::AtomPrintPreviewMessageHandler(
WebContents* web_contents)
: printing::PrintPreviewMessageHandler(web_contents),
weak_ptr_factory_(this) {
DCHECK(web_contents);
}
AtomPrintPreviewMessageHandler::~AtomPrintPreviewMessageHandler() {}
void AtomPrintPreviewMessageHandler::OnMetafileReadyForPrinting(
content::RenderFrameHost* render_frame_host,
const PrintHostMsg_DidPreviewDocument_Params& params,
const PrintHostMsg_PreviewIds& ids) {
printing::PrintPreviewMessageHandler::OnMetafileReadyForPrinting(
render_frame_host, params, ids);
BrowserThread::PostTaskAndReplyWithResult(
BrowserThread::IO, FROM_HERE, base::Bind(&CopyPDFDataOnIOThread, params),
base::Bind(&AtomPrintPreviewMessageHandler::RunPrintToPDFCallback,
base::Unretained(this), ids.request_id,
params.content.data_size));
}
void AtomPrintPreviewMessageHandler::OnPrintPreviewFailed(
int document_cookie,
const PrintHostMsg_PreviewIds& ids) {
printing::PrintPreviewMessageHandler::OnPrintPreviewFailed(document_cookie,
ids);
RunPrintToPDFCallback(ids.request_id, 0, nullptr);
}
void AtomPrintPreviewMessageHandler::PrintToPDF(
const base::DictionaryValue& options,
const PrintToPDFCallback& callback) {
int request_id;
options.GetInteger(printing::kPreviewRequestID, &request_id);
print_to_pdf_callback_map_[request_id] = callback;
content::RenderFrameHost* rfh = web_contents()->GetMainFrame();
rfh->Send(new PrintMsg_PrintPreview(rfh->GetRoutingID(), options));
}
void AtomPrintPreviewMessageHandler::RunPrintToPDFCallback(int request_id,
uint32_t data_size,
char* data) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::Locker locker(isolate);
v8::HandleScope handle_scope(isolate);
if (data) {
v8::Local<v8::Value> buffer =
node::Buffer::New(isolate, data, static_cast<size_t>(data_size),
&FreeNodeBufferData, nullptr)
.ToLocalChecked();
print_to_pdf_callback_map_[request_id].Run(v8::Null(isolate), buffer);
} else {
v8::Local<v8::String> error_message =
v8::String::NewFromUtf8(isolate, "Failed to generate PDF");
print_to_pdf_callback_map_[request_id].Run(
v8::Exception::Error(error_message), v8::Null(isolate));
}
print_to_pdf_callback_map_.erase(request_id);
}
} // namespace atom