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anupriya13anupriya13
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try adding some code for print :/
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‎windows/RNPrint/RNPrint.cpp

Lines changed: 135 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,18 @@
11
#include "pch.h"
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#include "RNPrint.h"
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#include "winrt/Microsoft.ReactNative.h"
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#include <winrt/Windows.Graphics.Printing.h>
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#include <winrt/Windows.Storage.h>
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#include <winrt/Windows.Storage.Streams.h>
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#include "winrt/Windows.Foundation.h"
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#include <winrt/Windows.System.h>
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#include <winrt/Windows.Web.Http.h>
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#include <winrt/Windows.Storage.h>
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using namespace winrt;
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using namespace winrt::Microsoft::ReactNative;
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using namespace winrt::Windows::Foundation;
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namespace winrt::RNPrint
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{
@@ -11,7 +23,128 @@ void RNPrint::Initialize(React::ReactContext const &reactContext) noexcept {
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m_context = reactContext;
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}
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void RNPrint::Print(RNPrintCodegen::RNPrintSpec_RNPrintOptions&& options, ::React::ReactPromise<::React::JSValue>&& promise) noexcept {
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}
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void RNPrint::Print(RNPrintCodegen::RNPrintSpec_RNPrintOptions&& options, ::React::ReactPromise<::React::JSValue>&& promise) noexcept
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{
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try
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{
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if (!options.filePath.has_value()) {
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promise.Reject(L"Only filePath printing is supported without XAML controls.");
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return;
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}
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std::string filePathStr = options.filePath.value();
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auto filePathHstring = winrt::to_hstring(filePathStr);
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// Check if the filePath is a URL (http/https)
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if (filePathStr.rfind("http://", 0) == 0 || filePathStr.rfind("https://", 0) == 0) {
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// Download the file to a temporary location first
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m_context.UIDispatcher().Post([filePathStr, promise = std::move(promise)]() mutable {
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using namespace winrt::Windows::Storage;
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using namespace winrt::Windows::Web::Http;
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using namespace winrt::Windows::Foundation;
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try {
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auto tempFolder = ApplicationData::Current().TemporaryFolder();
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auto uri = winrt::Windows::Foundation::Uri(winrt::to_hstring(filePathStr));
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HttpClient httpClient;
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httpClient.GetBufferAsync(uri).Completed(
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[tempFolder, uri, promise = std::move(promise)](
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IAsyncOperationWithProgress<winrt::Windows::Storage::Streams::IBuffer, winrt::Windows::Web::Http::HttpProgress> op,
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AsyncStatus status) mutable
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{
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if (status != AsyncStatus::Completed) {
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promise.Reject(L"Failed to download file for printing.");
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return;
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}
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auto buffer = op.GetResults();
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auto path = uri.Path();
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std::wstring fileName = L"printfile";
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if (!path.empty()) {
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std::wstring wpath = path.c_str();
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size_t pos = wpath.find_last_of(L"/\\");
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if (pos != std::wstring::npos && pos + 1 < wpath.size()) {
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fileName = wpath.substr(pos + 1);
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}
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else {
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fileName = wpath;
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}
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}
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tempFolder.CreateFileAsync(fileName, CreationCollisionOption::GenerateUniqueName).Completed(
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[buffer, promise = std::move(promise)](IAsyncOperation<StorageFile> fileOp, AsyncStatus fileStatus) mutable {
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if (fileStatus != AsyncStatus::Completed) {
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promise.Reject(L"Failed to create temp file for printing.");
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return;
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}
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StorageFile file = fileOp.GetResults();
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FileIO::WriteBufferAsync(file, buffer).Completed(
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[file, promise = std::move(promise)](IAsyncAction /*writeOp*/, AsyncStatus writeStatus) mutable {
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if (writeStatus != AsyncStatus::Completed) {
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promise.Reject(L"Failed to write to temp file for printing.");
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return;
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}
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winrt::Windows::System::LauncherOptions options;
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options.DisplayApplicationPicker(false);
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options.PreferredApplicationDisplayName(L"Print");
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options.PreferredApplicationPackageFamilyName(L"");
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winrt::Windows::System::Launcher::LaunchFileAsync(file, options).Completed(
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[promise = std::move(promise)](IAsyncOperation<bool> op, AsyncStatus status) mutable {
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if (status == AsyncStatus::Completed && op.GetResults()) {
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promise.Resolve(::React::JSValue(true));
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}
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else {
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promise.Reject(L"Failed to launch print handler for file.");
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}
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}
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);
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}
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);
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}
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);
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}
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);
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}
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catch (...) {
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promise.Reject(L"Exception occurred while downloading file for printing.");
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}
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});
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} else {
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// Local file path
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m_context.UIDispatcher().Post([filePathHstring, promise = std::move(promise)]() mutable {
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using namespace winrt::Windows::Storage;
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using namespace winrt::Windows::Foundation;
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StorageFile::GetFileFromPathAsync(filePathHstring).Completed(
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[promise = std::move(promise)](IAsyncOperation<StorageFile> op, AsyncStatus status) mutable {
120+
if (status != AsyncStatus::Completed) {
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promise.Reject(L"Failed to open file for printing.");
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return;
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}
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StorageFile file = op.GetResults();
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winrt::Windows::System::LauncherOptions options;
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options.DisplayApplicationPicker(false);
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options.PreferredApplicationDisplayName(L"Print");
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options.PreferredApplicationPackageFamilyName(L"");
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winrt::Windows::System::Launcher::LaunchFileAsync(file, options).Completed(
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[promise = std::move(promise)](IAsyncOperation<bool> op, AsyncStatus status) mutable {
133+
if (status == AsyncStatus::Completed && op.GetResults()) {
134+
promise.Resolve(::React::JSValue(true));
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} else {
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promise.Reject(L"Failed to launch print handler for file.");
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}
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}
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);
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}
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);
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});
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}
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}
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catch (...)
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{
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promise.Reject(L"Unknown error in Print function");
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}
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}
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} // namespace winrt::RNPrint

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