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Add print preview support (see issue #123)

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Pass the `--enable-print-preview` command-line flag to enable. Currently only
supported on Windows and Linux.
This commit is contained in:
Ananyo Maiti
2019-07-17 14:47:27 -04:00
committed by Marshall Greenblatt
parent cf87c88b05
commit 1669c0afbd
49 changed files with 1098 additions and 1425 deletions
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20
libcef/renderer/extensions/print_render_frame_helper_delegate.cc
View File

@@ -6,18 +6,27 @@
#include <vector>
#include "libcef/common/extensions/extensions_util.h"
#include "base/command_line.h"
#include "base/strings/string_util.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/url_constants.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_view.h"
#include "extensions/common/constants.h"
#include "extensions/renderer/guest_view/mime_handler_view/mime_handler_view_container.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_local_frame.h"
namespace extensions {
CefPrintRenderFrameHelperDelegate::CefPrintRenderFrameHelperDelegate(
bool is_windowless)
: is_windowless_(is_windowless) {}
CefPrintRenderFrameHelperDelegate::~CefPrintRenderFrameHelperDelegate() {}
bool CefPrintRenderFrameHelperDelegate::CancelPrerender(
@@ -29,8 +38,11 @@ bool CefPrintRenderFrameHelperDelegate::CancelPrerender(
blink::WebElement CefPrintRenderFrameHelperDelegate::GetPdfElement(
blink::WebLocalFrame* frame) {
GURL url = frame->GetDocument().Url();
if (url.SchemeIs(extensions::kExtensionScheme) &&
url.host() == extension_misc::kPdfExtensionId) {
bool inside_print_preview = url.GetOrigin() == chrome::kChromeUIPrintURL;
bool inside_pdf_extension =
url.SchemeIs(extensions::kExtensionScheme) &&
url.host_piece() == extension_misc::kPdfExtensionId;
if (inside_print_preview || inside_pdf_extension) {
// <object> with id="plugin" is created in
// chrome/browser/resources/pdf/pdf.js.
auto plugin_element = frame->GetDocument().GetElementById("plugin");
@@ -43,7 +55,7 @@ blink::WebElement CefPrintRenderFrameHelperDelegate::GetPdfElement(
}
bool CefPrintRenderFrameHelperDelegate::IsPrintPreviewEnabled() {
return false;
return !is_windowless_ && PrintPreviewEnabled();
}
bool CefPrintRenderFrameHelperDelegate::OverridePrint(