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1669c0afbd
Pass the `--enable-print-preview` command-line flag to enable. Currently only supported on Windows and Linux.
103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_
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#define CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_
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#include "include/internal/cef_types_wrappers.h"
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#include "base/macros.h"
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#include "content/public/browser/web_contents_observer.h"
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#include "content/public/browser/web_contents_user_data.h"
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namespace content {
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class RenderFrameHost;
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class RenderProcessHost;
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class WebContentsObserver;
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} // namespace content
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class CefBrowserInfo;
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struct PrintHostMsg_DidPreviewDocument_Params;
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struct PrintHostMsg_PreviewIds;
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struct PrintHostMsg_RequestPrintPreview_Params;
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namespace printing {
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// Manages the print commands for a WebContents.
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class CefPrintViewManager
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: public content::WebContentsObserver,
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public content::WebContentsUserData<CefPrintViewManager> {
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public:
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~CefPrintViewManager() override;
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// Callback executed on PDF printing completion.
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typedef base::Callback<void(bool /*ok*/)> PdfPrintCallback;
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// Print the current document to a PDF file. Execute |callback| on completion.
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bool PrintToPDF(content::RenderFrameHost* rfh,
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const base::FilePath& path,
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const CefPdfPrintSettings& settings,
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const PdfPrintCallback& callback);
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// Call to Chrome's PrintViewManager.
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bool PrintPreviewNow(content::RenderFrameHost* rfh, bool has_selection);
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// content::WebContentsObserver implementation.
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void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
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void NavigationStopped() override;
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void RenderProcessGone(base::TerminationStatus status) override;
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bool OnMessageReceived(const IPC::Message& message,
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content::RenderFrameHost* render_frame_host) override;
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// Used to track the lifespan of the print preview WebContents.
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class PrintPreviewHelper
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: public content::WebContentsObserver,
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public content::WebContentsUserData<PrintPreviewHelper> {
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public:
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void Initialize(int parent_frame_tree_node_id);
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void WebContentsDestroyed() override;
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private:
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friend class content::WebContentsUserData<PrintPreviewHelper>;
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explicit PrintPreviewHelper(content::WebContents* contents);
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int parent_frame_tree_node_id_ = -1;
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WEB_CONTENTS_USER_DATA_KEY_DECL();
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DISALLOW_COPY_AND_ASSIGN(PrintPreviewHelper);
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};
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private:
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explicit CefPrintViewManager(content::WebContents* web_contents);
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friend class content::WebContentsUserData<CefPrintViewManager>;
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// IPC Message handlers.
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void OnRequestPrintPreview(content::RenderFrameHost* rfh,
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const PrintHostMsg_RequestPrintPreview_Params&);
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void OnShowScriptedPrintPreview(content::RenderFrameHost* rfh,
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bool source_is_modifiable);
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void OnRequestPrintPreview_PrintToPdf(
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content::RenderFrameHost* rfh,
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const PrintHostMsg_RequestPrintPreview_Params&);
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void OnDidShowPrintDialog_PrintToPdf(content::RenderFrameHost* rfh);
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void OnMetafileReadyForPrinting_PrintToPdf(
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content::RenderFrameHost* rfh,
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const PrintHostMsg_DidPreviewDocument_Params& params,
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const PrintHostMsg_PreviewIds& ids);
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void InitializePrintPreview(int frame_tree_node_id);
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void TerminatePdfPrintJob();
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// Used for printing to PDF. Only accessed on the browser process UI thread.
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int next_pdf_request_id_ = content::RenderFrameHost::kNoFrameTreeNodeId;
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struct PdfPrintState;
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std::unique_ptr<PdfPrintState> pdf_print_state_;
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WEB_CONTENTS_USER_DATA_KEY_DECL();
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DISALLOW_COPY_AND_ASSIGN(CefPrintViewManager);
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};
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} // namespace printing
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#endif // CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_
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