blob: ab98759a172d70802f03f35b25a80ba585864e5e [file] [log] [blame]
// Copyright 2013 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 "android_webview/browser/aw_pdf_exporter.h"
#include "android_webview/browser/aw_print_manager.h"
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "content/public/browser/browser_thread.h"
#include "jni/AwPdfExporter_jni.h"
#include "printing/print_settings.h"
#include "printing/units.h"
using base::android::JavaParamRef;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
namespace android_webview {
namespace {
void GetPageRanges(JNIEnv* env,
jintArray int_arr,
printing::PageRanges* range_vector) {
std::vector<int> pages;
base::android::JavaIntArrayToIntVector(env, int_arr, &pages);
for (int page : pages) {
printing::PageRange range;
range.from = page;
range.to = page;
range_vector->push_back(range);
}
}
} // namespace
AwPdfExporter::AwPdfExporter(JNIEnv* env,
const JavaRef<jobject>& obj,
content::WebContents* web_contents)
: java_ref_(env, obj), web_contents_(web_contents) {
DCHECK(!obj.is_null());
Java_AwPdfExporter_setNativeAwPdfExporter(env, obj,
reinterpret_cast<intptr_t>(this));
}
AwPdfExporter::~AwPdfExporter() {
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
if (obj.is_null())
return;
// Clear the Java peer's weak pointer to |this| object.
Java_AwPdfExporter_setNativeAwPdfExporter(env, obj, 0);
}
void AwPdfExporter::ExportToPdf(JNIEnv* env,
const JavaParamRef<jobject>& obj,
int fd,
jintArray pages,
const JavaParamRef<jobject>& cancel_signal) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
printing::PrintSettings print_settings;
printing::PageRanges page_ranges;
GetPageRanges(env, pages, &page_ranges);
InitPdfSettings(env, obj, page_ranges, print_settings);
AwPrintManager* print_manager = AwPrintManager::CreateForWebContents(
web_contents_, print_settings, base::FileDescriptor(fd, false),
base::Bind(&AwPdfExporter::DidExportPdf, base::Unretained(this)));
if (!print_manager->PrintNow())
DidExportPdf(fd, 0);
}
namespace {
// Converts from 1/1000 of inches to device units using DPI.
int MilsToDots(int val, int dpi) {
return static_cast<int>(printing::ConvertUnitDouble(val, 1000.0, dpi));
}
} // namespace
void AwPdfExporter::InitPdfSettings(JNIEnv* env,
const JavaRef<jobject>& obj,
const printing::PageRanges& page_ranges,
printing::PrintSettings& settings) {
int dpi = Java_AwPdfExporter_getDpi(env, obj);
int width = Java_AwPdfExporter_getPageWidth(env, obj);
int height = Java_AwPdfExporter_getPageHeight(env, obj);
gfx::Size physical_size_device_units;
int width_in_dots = MilsToDots(width, dpi);
int height_in_dots = MilsToDots(height, dpi);
physical_size_device_units.SetSize(width_in_dots, height_in_dots);
gfx::Rect printable_area_device_units;
// Assume full page is printable for now.
printable_area_device_units.SetRect(0, 0, width_in_dots, height_in_dots);
if (!page_ranges.empty())
settings.set_ranges(page_ranges);
settings.set_dpi(dpi);
// TODO(sgurun) verify that the value for newly added parameter for
// (i.e. landscape_needs_flip) is correct.
settings.SetPrinterPrintableArea(physical_size_device_units,
printable_area_device_units, true);
printing::PageMargins margins;
margins.left = MilsToDots(Java_AwPdfExporter_getLeftMargin(env, obj), dpi);
margins.right = MilsToDots(Java_AwPdfExporter_getRightMargin(env, obj), dpi);
margins.top = MilsToDots(Java_AwPdfExporter_getTopMargin(env, obj), dpi);
margins.bottom =
MilsToDots(Java_AwPdfExporter_getBottomMargin(env, obj), dpi);
settings.SetCustomMargins(margins);
settings.set_should_print_backgrounds(true);
}
void AwPdfExporter::DidExportPdf(int fd, int page_count) {
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
if (obj.is_null())
return;
Java_AwPdfExporter_didExportPdf(env, obj, page_count);
}
} // namespace android_webview