// Copyright 2013 The Chromium Authors
// 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 <stdint.h>
#include <memory>
#include <utility>
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/check_op.h"
#include "base/files/file.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "printing/metafile.h"
#include "printing/mojom/print.mojom.h"
#include "printing/print_job_constants.h"
#include "printing/units.h"
#include "third_party/icu/source/i18n/unicode/ulocdata.h"
#include "ui/android/window_android.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "printing/printing_jni_headers/PrintingContext_jni.h"
using base::android::JavaParamRef;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
namespace printing {
namespace {
// Sets the page sizes for a `PrintSettings` object. `width` and `height`
// arguments should be in device units.
void SetSizes(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,
const JavaRef<jintArray>& int_arr,
PageRanges* range_vector) {
std::vector<int> pages;
base::android::JavaIntArrayToIntVector(env, int_arr, &pages);
for (int page : pages) {
PageRange range;
range.from = page;
range.to = page;
range_vector->push_back(range);
}
}
} // namespace
// static
std::unique_ptr<PrintingContext> PrintingContext::CreateImpl(
Delegate* delegate,
ProcessBehavior process_behavior) {
DCHECK_EQ(process_behavior, ProcessBehavior::kOopDisabled);
return std::make_unique<PrintingContextAndroid>(delegate);
}
// static
void PrintingContextAndroid::PdfWritingDone(int page_count) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_PrintingContext_pdfWritingDone(env, page_count);
}
// static
void PrintingContextAndroid::SetPendingPrint(
ui::WindowAndroid* window,
const ScopedJavaLocalRef<jobject>& printable,
int render_process_id,
int render_frame_id) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_PrintingContext_setPendingPrint(env, window->GetJavaObject(), printable,
render_process_id, render_frame_id);
}
PrintingContextAndroid::PrintingContextAndroid(Delegate* delegate)
: PrintingContext(delegate, ProcessBehavior::kOopDisabled) {
// The constructor is run in the IO thread.
}
PrintingContextAndroid::~PrintingContextAndroid() {}
void PrintingContextAndroid::AskUserForSettings(
int max_pages,
bool has_selection,
bool is_scripted,
PrintSettingsCallback callback) {
// This method is always run in the UI thread.
callback_ = std::move(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_);
} else {
Java_PrintingContext_askUserForSettings(env, j_printing_context_,
max_pages);
}
}
void PrintingContextAndroid::AskUserForSettingsReply(
JNIEnv* env,
const JavaParamRef<jobject>& obj,
jboolean success) {
DCHECK(callback_);
if (!success) {
// TODO(cimamoglu): Differentiate between `kFailed` And `kCancel`.
std::move(callback_).Run(mojom::ResultCode::kFailed);
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.
// TODO(thestig): See if the call to set_device_name() can be removed.
fd_ = Java_PrintingContext_getFileDescriptor(env, j_printing_context_);
DCHECK(is_file_descriptor_valid());
settings_->set_device_name(base::NumberToString16(fd_));
ScopedJavaLocalRef<jintArray> intArr =
Java_PrintingContext_getPages(env, j_printing_context_);
if (!intArr.is_null()) {
PageRanges range_vector;
GetPageRanges(env, intArr, &range_vector);
settings_->set_ranges(range_vector);
}
int dpi = Java_PrintingContext_getDpi(env, j_printing_context_);
int width = Java_PrintingContext_getWidth(env, j_printing_context_);
int height = Java_PrintingContext_getHeight(env, j_printing_context_);
width = ConvertUnit(width, kMilsPerInch, dpi);
height = ConvertUnit(height, kMilsPerInch, dpi);
SetSizes(settings_.get(), dpi, width, height);
std::move(callback_).Run(mojom::ResultCode::kSuccess);
}
void PrintingContextAndroid::ShowSystemDialogDone(
JNIEnv* env,
const JavaParamRef<jobject>& obj) {
DCHECK(callback_);
// Settings are not updated, callback is called only to unblock javascript.
std::move(callback_).Run(mojom::ResultCode::kCanceled);
}
mojom::ResultCode PrintingContextAndroid::UseDefaultSettings() {
DCHECK(!in_print_job_);
ResetSettings();
settings_->set_dpi(kDefaultPdfDpi);
gfx::Size physical_size = GetPdfPaperSizeDeviceUnits();
SetSizes(settings_.get(), kDefaultPdfDpi, physical_size.width(),
physical_size.height());
return mojom::ResultCode::kSuccess;
}
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 = settings_->device_units_per_inch() / kMicronsPerMil;
width *= multiplier;
height *= multiplier;
}
return gfx::Size(width, height);
}
mojom::ResultCode PrintingContextAndroid::UpdatePrinterSettings(
const PrinterSettings& printer_settings) {
DCHECK(!printer_settings.show_system_dialog);
DCHECK(!in_print_job_);
// Intentional No-op.
return mojom::ResultCode::kSuccess;
}
mojom::ResultCode PrintingContextAndroid::NewDocument(
const std::u16string& document_name) {
DCHECK(!in_print_job_);
in_print_job_ = true;
return mojom::ResultCode::kSuccess;
}
mojom::ResultCode PrintingContextAndroid::PrintDocument(
const MetafilePlayer& metafile,
const PrintSettings& settings,
uint32_t num_pages) {
if (abort_printing_)
return mojom::ResultCode::kCanceled;
DCHECK(in_print_job_);
DCHECK(is_file_descriptor_valid());
return metafile.SaveToFileDescriptor(fd_) ? mojom::ResultCode::kSuccess
: mojom::ResultCode::kFailed;
}
mojom::ResultCode PrintingContextAndroid::DocumentDone() {
if (abort_printing_)
return mojom::ResultCode::kCanceled;
DCHECK(in_print_job_);
ResetSettings();
return mojom::ResultCode::kSuccess;
}
void PrintingContextAndroid::Cancel() {
abort_printing_ = true;
in_print_job_ = false;
}
void PrintingContextAndroid::ReleaseContext() {
// Intentional No-op.
}
printing::NativeDrawingContext PrintingContextAndroid::context() const {
// Intentional No-op.
return nullptr;
}
} // namespace printing
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