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// 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 "printing/printing_context_android.h"
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "jni/PrintingContext_jni.h"
#include "printing/metafile.h"
#include "printing/print_job_constants.h"
#include "printing/units.h"
#include "third_party/icu/source/i18n/unicode/ulocdata.h"
namespace {
// 1 inch in mils.
const int kInchToMil = 1000;
inline int Round(double x) {
return static_cast<int>(x + 0.5);
}
// Sets the page sizes for a |PrintSettings| object. |width| and |height|
// arguments should be in device units.
void SetSizes(
printing::PrintSettings* settings, int dpi, int width, int height) {
gfx::Size physical_size_device_units(width, height);
// Assume full page is printable for now.
gfx::Rect printable_area_device_units(0, 0, width, height);
settings->set_dpi(dpi);
settings->SetPrinterPrintableArea(physical_size_device_units,
printable_area_device_units,
false);
}
void GetPageRanges(JNIEnv* env,
jintArray int_arr,
printing::PageRanges& range_vector) {
std::vector<int> pages;
base::android::JavaIntArrayToIntVector(env, int_arr, &pages);
for (std::vector<int>::const_iterator it = pages.begin();
it != pages.end();
++it) {
printing::PageRange range;
range.from = *it;
range.to = *it;
range_vector.push_back(range);
}
}
} // namespace
namespace printing {
// static
scoped_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
return make_scoped_ptr<PrintingContext>(new PrintingContextAndroid(delegate));
}
// static
void PrintingContextAndroid::PdfWritingDone(int fd, bool success) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_PrintingContext_pdfWritingDone(env, fd, success);
}
PrintingContextAndroid::PrintingContextAndroid(Delegate* delegate)
: PrintingContext(delegate) {
// The constructor is run in the IO thread.
}
PrintingContextAndroid::~PrintingContextAndroid() {
}
void PrintingContextAndroid::AskUserForSettings(
int max_pages,
bool has_selection,
bool is_scripted,
const PrintSettingsCallback& callback) {
// This method is always run in the UI thread.
callback_ = callback;
JNIEnv* env = base::android::AttachCurrentThread();
if (j_printing_context_.is_null()) {
j_printing_context_.Reset(Java_PrintingContext_create(
env,
reinterpret_cast<intptr_t>(this)));
}
if (is_scripted) {
Java_PrintingContext_showPrintDialog(env, j_printing_context_.obj());
} else {
Java_PrintingContext_pageCountEstimationDone(env,
j_printing_context_.obj(),
max_pages);
}
}
void PrintingContextAndroid::AskUserForSettingsReply(JNIEnv* env,
jobject obj,
jboolean success) {
if (!success) {
// TODO(cimamoglu): Differentiate between FAILED And CANCEL.
callback_.Run(FAILED);
return;
}
// We use device name variable to store the file descriptor. This is hacky
// but necessary. Since device name is not necessary for the upstream
// printing code for Android, this is harmless.
int fd = Java_PrintingContext_getFileDescriptor(env,
j_printing_context_.obj());
settings_.set_device_name(base::IntToString16(fd));
ScopedJavaLocalRef<jintArray> intArr =
Java_PrintingContext_getPages(env, j_printing_context_.obj());
if (intArr.obj() != NULL) {
PageRanges range_vector;
GetPageRanges(env, intArr.obj(), range_vector);
settings_.set_ranges(range_vector);
}
int dpi = Java_PrintingContext_getDpi(env, j_printing_context_.obj());
int width = Java_PrintingContext_getWidth(env, j_printing_context_.obj());
int height = Java_PrintingContext_getHeight(env, j_printing_context_.obj());
width = Round(ConvertUnitDouble(width, kInchToMil, 1.0) * dpi);
height = Round(ConvertUnitDouble(height, kInchToMil, 1.0) * dpi);
SetSizes(&settings_, dpi, width, height);
callback_.Run(OK);
}
void PrintingContextAndroid::ShowSystemDialogDone(JNIEnv* env,
jobject obj) {
// Settings are not updated, callback is called only to unblock javascript.
callback_.Run(CANCEL);
}
PrintingContext::Result PrintingContextAndroid::UseDefaultSettings() {
DCHECK(!in_print_job_);
ResetSettings();
settings_.set_dpi(kDefaultPdfDpi);
gfx::Size physical_size = GetPdfPaperSizeDeviceUnits();
SetSizes(&settings_, kDefaultPdfDpi, physical_size.width(),
physical_size.height());
return OK;
}
gfx::Size PrintingContextAndroid::GetPdfPaperSizeDeviceUnits() {
// NOTE: This implementation is the same as in PrintingContextNoSystemDialog.
int32_t width = 0;
int32_t height = 0;
UErrorCode error = U_ZERO_ERROR;
ulocdata_getPaperSize(
delegate_->GetAppLocale().c_str(), &height, &width, &error);
if (error > U_ZERO_ERROR) {
// If the call failed, assume a paper size of 8.5 x 11 inches.
LOG(WARNING) << "ulocdata_getPaperSize failed, using 8.5 x 11, error: "
<< error;
width = static_cast<int>(
kLetterWidthInch * settings_.device_units_per_inch());
height = static_cast<int>(
kLetterHeightInch * settings_.device_units_per_inch());
} else {
// ulocdata_getPaperSize returns the width and height in mm.
// Convert this to pixels based on the dpi.
float multiplier = 100 * settings_.device_units_per_inch();
multiplier /= kHundrethsMMPerInch;
width *= multiplier;
height *= multiplier;
}
return gfx::Size(width, height);
}
PrintingContext::Result PrintingContextAndroid::UpdatePrinterSettings(
bool external_preview,
bool show_system_dialog) {
DCHECK(!show_system_dialog);
DCHECK(!in_print_job_);
// Intentional No-op.
return OK;
}
PrintingContext::Result PrintingContextAndroid::InitWithSettings(
const PrintSettings& settings) {
DCHECK(!in_print_job_);
settings_ = settings;
return OK;
}
PrintingContext::Result PrintingContextAndroid::NewDocument(
const base::string16& document_name) {
DCHECK(!in_print_job_);
in_print_job_ = true;
return OK;
}
PrintingContext::Result PrintingContextAndroid::NewPage() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
// Intentional No-op.
return OK;
}
PrintingContext::Result PrintingContextAndroid::PageDone() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
// Intentional No-op.
return OK;
}
PrintingContext::Result PrintingContextAndroid::DocumentDone() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
ResetSettings();
return OK;
}
void PrintingContextAndroid::Cancel() {
abort_printing_ = true;
in_print_job_ = false;
}
void PrintingContextAndroid::ReleaseContext() {
// Intentional No-op.
}
gfx::NativeDrawingContext PrintingContextAndroid::context() const {
// Intentional No-op.
return NULL;
}
// static
bool PrintingContextAndroid::RegisterPrintingContext(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace printing