1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "android_webview/native/aw_pdf_exporter.h"
7 #include "android_webview/browser/browser_view_renderer.h"
8 #include "android_webview/browser/renderer_host/print_manager.h"
9 #include "base/android/jni_android.h"
10 #include "base/logging.h"
11 #include "content/public/browser/browser_thread.h"
12 #include "content/public/browser/web_contents.h"
13 #include "jni/AwPdfExporter_jni.h"
14 #include "printing/print_settings.h"
15 #include "printing/units.h"
17 using base::android::AttachCurrentThread
;
18 using base::android::ScopedJavaGlobalRef
;
19 using content::BrowserThread
;
20 using content::WebContents
;
21 using printing::ConvertUnitDouble
;
22 using printing::PageMargins
;
23 using printing::PrintSettings
;
25 namespace android_webview
{
27 AwPdfExporter::AwPdfExporter(JNIEnv
* env
,
29 BrowserViewRenderer
* view_renderer
,
30 WebContents
* web_contents
)
31 : java_ref_(env
, obj
),
32 view_renderer_(view_renderer
),
33 web_contents_(web_contents
) {
35 Java_AwPdfExporter_setNativeAwPdfExporter(
36 env
, obj
, reinterpret_cast<jint
>(this));
39 AwPdfExporter::~AwPdfExporter() {
40 JNIEnv
* env
= AttachCurrentThread();
41 ScopedJavaLocalRef
<jobject
> obj
= java_ref_
.get(env
);
44 // Clear the Java peer's weak pointer to |this| object.
45 Java_AwPdfExporter_setNativeAwPdfExporter(env
, obj
.obj(), 0);
48 void AwPdfExporter::ExportToPdf(JNIEnv
* env
,
51 jobject cancel_signal
) {
52 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI
));
53 CreatePdfSettings(env
, obj
);
55 new PrintManager(web_contents_
, print_settings_
.get(), fd
, this));
56 if (!print_manager_
->PrintNow())
61 // Converts from 1/1000 of inches to device units using DPI.
62 int MilsToDots(int val
, int dpi
) {
63 return static_cast<int>(ConvertUnitDouble(val
, 1000.0, dpi
));
66 } // anonymous namespace
68 void AwPdfExporter::CreatePdfSettings(JNIEnv
* env
, jobject obj
) {
69 print_settings_
.reset(new PrintSettings
);
70 int dpi
= Java_AwPdfExporter_getDpi(env
, obj
);
71 int width
= Java_AwPdfExporter_getPageWidth(env
, obj
);
72 int height
= Java_AwPdfExporter_getPageHeight(env
, obj
);
73 gfx::Size physical_size_device_units
;
74 int width_in_dots
= MilsToDots(width
, dpi
);
75 int height_in_dots
= MilsToDots(height
, dpi
);
76 physical_size_device_units
.SetSize(width_in_dots
, height_in_dots
);
78 gfx::Rect printable_area_device_units
;
79 // Assume full page is printable for now.
80 printable_area_device_units
.SetRect(0, 0, width_in_dots
, height_in_dots
);
82 print_settings_
->set_dpi(dpi
);
83 // TODO(sgurun) verify that the value for newly added parameter for
84 // (i.e. landscape_needs_flip) is correct.
85 print_settings_
->SetPrinterPrintableArea(physical_size_device_units
,
86 printable_area_device_units
,
91 MilsToDots(Java_AwPdfExporter_getLeftMargin(env
, obj
), dpi
);
93 MilsToDots(Java_AwPdfExporter_getRightMargin(env
, obj
), dpi
);
95 MilsToDots(Java_AwPdfExporter_getTopMargin(env
, obj
), dpi
);
97 MilsToDots(Java_AwPdfExporter_getBottomMargin(env
, obj
), dpi
);
98 print_settings_
->SetCustomMargins(margins
);
99 print_settings_
->set_should_print_backgrounds(true);
102 void AwPdfExporter::DidExportPdf(bool success
) {
103 JNIEnv
* env
= AttachCurrentThread();
104 ScopedJavaLocalRef
<jobject
> obj
= java_ref_
.get(env
);
107 Java_AwPdfExporter_didExportPdf(env
, obj
.obj(), success
);
110 bool AwPdfExporter::IsCancelled() {
111 // TODO(sgurun) implement. Needs connecting with the |cancel_signal| passed
112 // in the constructor.
116 bool RegisterAwPdfExporter(JNIEnv
* env
) {
117 return RegisterNativesImpl(env
) >= 0;
120 } // namespace android_webview