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cef/libcef/browser/printing/print_view_manager.cc

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// 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 "libcef/browser/printing/print_view_manager.h"
#include "include/internal/cef_types_wrappers.h"
#include "libcef/browser/browser_info.h"
#include "libcef/browser/browser_info_manager.h"
#include "libcef/browser/download_manager_delegate.h"
#include "libcef/browser/extensions/extension_web_contents_observer.h"
#include "libcef/browser/thread_util.h"
#include <map>
#include <utility>
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "base/memory/ptr_util.h"
#include "base/memory/ref_counted_memory.h"
#include "base/task/post_task.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/printer_query.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
#include "components/printing/common/print.mojom.h"
#include "content/browser/download/download_manager_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "printing/metafile_skia.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#if defined(OS_LINUX)
#include "libcef/browser/printing/print_dialog_linux.h"
#endif
using content::BrowserThread;
namespace printing {
namespace {
const int PREVIEW_UIID = 12345678;
// Convert CefPdfPrintSettings into base::DictionaryValue.
void FillInDictionaryFromPdfPrintSettings(
const CefPdfPrintSettings& pdf_settings,
int request_id,
base::DictionaryValue& print_settings) {
// Fixed settings.
print_settings.SetIntKey(kSettingPrinterType,
static_cast<int>(mojom::PrinterType::kPdf));
print_settings.SetInteger(kSettingColor,
static_cast<int>(mojom::ColorModel::kGray));
print_settings.SetInteger(kSettingDuplexMode,
static_cast<int>(mojom::DuplexMode::kSimplex));
print_settings.SetInteger(kSettingCopies, 1);
print_settings.SetBoolean(kSettingCollate, false);
print_settings.SetString(kSettingDeviceName, "");
print_settings.SetBoolean(kSettingRasterizePdf, false);
print_settings.SetBoolean(kSettingPreviewModifiable, false);
print_settings.SetInteger(kSettingDpiHorizontal, 0);
print_settings.SetInteger(kSettingDpiVertical, 0);
print_settings.SetInteger(kSettingPagesPerSheet, 1);
// User defined settings.
print_settings.SetBoolean(kSettingLandscape, !!pdf_settings.landscape);
print_settings.SetBoolean(kSettingShouldPrintSelectionOnly,
!!pdf_settings.selection_only);
print_settings.SetBoolean(kSettingShouldPrintBackgrounds,
!!pdf_settings.backgrounds_enabled);
print_settings.SetBoolean(kSettingHeaderFooterEnabled,
!!pdf_settings.header_footer_enabled);
print_settings.SetInteger(kSettingScaleFactor, pdf_settings.scale_factor > 0
? pdf_settings.scale_factor
: 100);
if (pdf_settings.header_footer_enabled) {
print_settings.SetString(
kSettingHeaderFooterTitle,
CefString(&pdf_settings.header_footer_title).ToString16());
print_settings.SetString(
kSettingHeaderFooterURL,
CefString(&pdf_settings.header_footer_url).ToString16());
}
if (pdf_settings.page_width > 0 && pdf_settings.page_height > 0) {
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
dict->SetInteger(kSettingMediaSizeWidthMicrons, pdf_settings.page_width);
dict->SetInteger(kSettingMediaSizeHeightMicrons, pdf_settings.page_height);
print_settings.Set(kSettingMediaSize, std::move(dict));
}
auto margin_type = printing::mojom::MarginType::kDefaultMargins;
switch (pdf_settings.margin_type) {
case PDF_PRINT_MARGIN_NONE:
margin_type = printing::mojom::MarginType::kNoMargins;
break;
case PDF_PRINT_MARGIN_MINIMUM:
margin_type = printing::mojom::MarginType::kPrintableAreaMargins;
break;
case PDF_PRINT_MARGIN_CUSTOM:
margin_type = printing::mojom::MarginType::kCustomMargins;
break;
default:
break;
}
print_settings.SetInteger(kSettingMarginsType, static_cast<int>(margin_type));
if (margin_type == printing::mojom::MarginType::kCustomMargins) {
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
dict->SetInteger(kSettingMarginTop, pdf_settings.margin_top);
dict->SetInteger(kSettingMarginRight, pdf_settings.margin_right);
dict->SetInteger(kSettingMarginBottom, pdf_settings.margin_bottom);
dict->SetInteger(kSettingMarginLeft, pdf_settings.margin_left);
print_settings.Set(kSettingMarginsCustom, std::move(dict));
}
// Service settings.
print_settings.SetInteger(kPreviewUIID, PREVIEW_UIID);
print_settings.SetInteger(kPreviewRequestID, request_id);
print_settings.SetBoolean(kIsFirstRequest, request_id != 0);
}
void StopWorker(int document_cookie) {
if (document_cookie <= 0)
return;
scoped_refptr<PrintQueriesQueue> queue =
g_browser_process->print_job_manager()->queue();
std::unique_ptr<PrinterQuery> printer_query =
queue->PopPrinterQuery(document_cookie);
if (printer_query.get()) {
content::GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&PrinterQuery::StopWorker, std::move(printer_query)));
}
}
// Write the PDF file to disk.
void SavePdfFile(scoped_refptr<base::RefCountedSharedMemoryMapping> data,
const base::FilePath& path,
CefPrintViewManager::PdfPrintCallback callback) {
CEF_REQUIRE_BLOCKING();
DCHECK_GT(data->size(), 0U);
MetafileSkia metafile;
metafile.InitFromData(*data);
base::File file(path,
base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
bool ok = file.IsValid() && metafile.SaveTo(&file);
if (!callback.is_null()) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), ok));
}
}
} // namespace
struct CefPrintViewManager::PdfPrintState {
content::RenderFrameHost* printing_rfh_ = nullptr;
base::FilePath output_path_;
base::DictionaryValue settings_;
PdfPrintCallback callback_;
};
CefPrintViewManager::CefPrintViewManager(content::WebContents* web_contents)
: PrintViewManager(web_contents) {}
CefPrintViewManager::~CefPrintViewManager() {
TerminatePdfPrintJob();
}
// static
void CefPrintViewManager::BindPrintManagerHost(
mojo::PendingAssociatedReceiver<mojom::PrintManagerHost> receiver,
content::RenderFrameHost* rfh) {
auto* web_contents = content::WebContents::FromRenderFrameHost(rfh);
if (!web_contents)
return;
auto* print_manager = CefPrintViewManager::FromWebContents(web_contents);
if (!print_manager)
return;
print_manager->BindReceiver(std::move(receiver), rfh);
}
bool CefPrintViewManager::PrintToPDF(content::RenderFrameHost* rfh,
const base::FilePath& path,
const CefPdfPrintSettings& settings,
PdfPrintCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Don't start print again while printing is currently in progress.
if (pdf_print_state_)
return false;
// Don't print crashed tabs.
if (!web_contents() || web_contents()->IsCrashed()) {
return false;
}
pdf_print_state_.reset(new PdfPrintState);
pdf_print_state_->printing_rfh_ = rfh;
pdf_print_state_->output_path_ = path;
pdf_print_state_->callback_ = std::move(callback);
FillInDictionaryFromPdfPrintSettings(settings, ++next_pdf_request_id_,
pdf_print_state_->settings_);
auto& print_render_frame = GetPrintRenderFrame(rfh);
if (!pdf_print_receiver_.is_bound()) {
print_render_frame->SetPrintPreviewUI(
pdf_print_receiver_.BindNewEndpointAndPassRemote());
}
print_render_frame->InitiatePrintPreview({}, !!settings.selection_only);
return true;
}
void CefPrintViewManager::GetDefaultPrintSettings(
GetDefaultPrintSettingsCallback callback) {
#if defined(OS_LINUX)
// Send notification to the client.
auto browser = CefBrowserHostBase::GetBrowserForContents(web_contents());
if (browser) {
CefPrintDialogLinux::OnPrintStart(browser);
}
#endif
PrintViewManager::GetDefaultPrintSettings(std::move(callback));
}
void CefPrintViewManager::DidShowPrintDialog() {
if (pdf_print_state_)
return;
PrintViewManager::DidShowPrintDialog();
}
void CefPrintViewManager::RequestPrintPreview(
mojom::RequestPrintPreviewParamsPtr params) {
if (!pdf_print_state_) {
PrintViewManager::RequestPrintPreview(std::move(params));
return;
}
GetPrintRenderFrame(pdf_print_state_->printing_rfh_)
->PrintPreview(pdf_print_state_->settings_.Clone());
}
void CefPrintViewManager::CheckForCancel(int32_t preview_ui_id,
int32_t request_id,
CheckForCancelCallback callback) {
if (!pdf_print_state_) {
return PrintViewManager::CheckForCancel(preview_ui_id, request_id,
std::move(callback));
}
std::move(callback).Run(/*cancel=*/false);
}
void CefPrintViewManager::MetafileReadyForPrinting(
mojom::DidPreviewDocumentParamsPtr params,
int32_t request_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
StopWorker(params->document_cookie);
if (!pdf_print_state_)
return;
GetPrintRenderFrame(pdf_print_state_->printing_rfh_)
->OnPrintPreviewDialogClosed();
auto shared_buf = base::RefCountedSharedMemoryMapping::CreateFromWholeRegion(
params->content->metafile_data_region);
if (!shared_buf) {
TerminatePdfPrintJob();
return;
}
const base::FilePath output_path = pdf_print_state_->output_path_;
PdfPrintCallback print_callback = std::move(pdf_print_state_->callback_);
// Reset state information.
pdf_print_state_.reset();
pdf_print_receiver_.reset();
// Save the PDF file to disk and then execute the callback.
CEF_POST_USER_VISIBLE_TASK(base::BindOnce(
&SavePdfFile, shared_buf, output_path, std::move(print_callback)));
}
void CefPrintViewManager::PrintPreviewFailed(int32_t document_cookie,
int32_t request_id) {
TerminatePdfPrintJob();
}
void CefPrintViewManager::PrintPreviewCancelled(int32_t document_cookie,
int32_t request_id) {
// Should never be canceled by CheckForCancel().
NOTREACHED();
}
void CefPrintViewManager::RenderFrameDeleted(
content::RenderFrameHost* render_frame_host) {
if (pdf_print_state_ &&
render_frame_host == pdf_print_state_->printing_rfh_) {
TerminatePdfPrintJob();
}
PrintViewManager::RenderFrameDeleted(render_frame_host);
}
void CefPrintViewManager::NavigationStopped() {
TerminatePdfPrintJob();
PrintViewManager::NavigationStopped();
}
void CefPrintViewManager::RenderProcessGone(base::TerminationStatus status) {
TerminatePdfPrintJob();
PrintViewManager::RenderProcessGone(status);
}
// static
void CefPrintViewManager::CreateForWebContents(content::WebContents* contents) {
DCHECK(contents);
if (!FromWebContents(contents)) {
contents->SetUserData(PrintViewManager::UserDataKey(),
base::WrapUnique(new CefPrintViewManager(contents)));
}
}
// static
CefPrintViewManager* CefPrintViewManager::FromWebContents(
content::WebContents* contents) {
DCHECK(contents);
return static_cast<CefPrintViewManager*>(
contents->GetUserData(PrintViewManager::UserDataKey()));
}
// static
const CefPrintViewManager* CefPrintViewManager::FromWebContents(
const content::WebContents* contents) {
DCHECK(contents);
return static_cast<const CefPrintViewManager*>(
contents->GetUserData(PrintViewManager::UserDataKey()));
}
void CefPrintViewManager::TerminatePdfPrintJob() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!pdf_print_state_)
return;
if (!pdf_print_state_->callback_.is_null()) {
// Execute the callback.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(std::move(pdf_print_state_->callback_), false));
}
// Reset state information.
pdf_print_state_.reset();
pdf_print_receiver_.reset();
}
} // namespace printing
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