lifegpc/eh_downloader_flutter
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Impl saveFile on Linux platform

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lifegpc
2023-12-25 22:58:23 +08:00
parent af9dd02450
commit 76288e85ed
1 changed files with 106 additions and 0 deletions
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106
linux/my_application.cc
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@@ -11,6 +11,7 @@ struct _MyApplication {
GtkApplication parent_instance;
char** dart_entrypoint_arguments;
FlMethodChannel* path_channel;
FlMethodChannel* saf_channel;
};
G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
@@ -32,6 +33,106 @@ static void on_path_channel_call(FlMethodChannel* channel, FlMethodCall* method_
}
}
const gchar* get_filter_name_from_mime_type(const gchar* mime_type) {
if (g_strcmp0(mime_type, "image/jpeg") == 0) {
return "JPG File";
} else if (g_strcmp0(mime_type, "image/png") == 0) {
return "PNG File";
} else if (g_strcmp0(mime_type, "image/gif") == 0) {
return "GIF File";
} else if (g_strcmp0(mime_type, "application/zip") == 0) {
return "Zip File";
} else {
return nullptr;
}
}
const gchar* get_ext_from_mime_type(const gchar* mime_type) {
if (g_strcmp0(mime_type, "image/jpeg") == 0) {
return ".jpg";
} else if (g_strcmp0(mime_type, "image/png") == 0) {
return ".png";
} else if (g_strcmp0(mime_type, "image/gif") == 0) {
return ".gif";
} else if (g_strcmp0(mime_type, "application/zip") == 0) {
return ".zip";
} else {
return nullptr;
}
}
static void on_saf_channel_call(FlMethodChannel* channel, FlMethodCall* method_call,
gpointer user_data) {
const gchar* method = fl_method_call_get_name(method_call);
if (strcmp(method, "saveFile") == 0) {
auto args = fl_method_call_get_args(method_call);
auto fileName = fl_value_get_string(fl_value_get_list_value(args, 0));
auto dir = fl_value_get_string(fl_value_get_list_value(args, 1));
auto mimeType = fl_value_get_string(fl_value_get_list_value(args, 2));
auto odata = fl_value_get_list_value(args, 3);
auto data = fl_value_get_uint8_list(odata);
auto dataLen = fl_value_get_length(odata);
if (!fileName || !dir || !mimeType || !data) {
fl_method_call_respond_error(method_call, "INVALID_ARGUMENTS", "Invalid arguments", nullptr, nullptr);
return;
}
auto dialog = gtk_file_chooser_dialog_new("Save File", nullptr, GTK_FILE_CHOOSER_ACTION_SAVE,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Save", GTK_RESPONSE_ACCEPT,
nullptr);
gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dialog), TRUE);
auto ext = get_ext_from_mime_type(mimeType);
if (ext) {
auto gstr = g_string_new(fileName);
g_string_append(gstr, ext);
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(dialog), gstr->str);
g_string_free(gstr, TRUE);
} else {
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(dialog), fileName);
}
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(dialog), dir);
auto filter = gtk_file_filter_new();
gtk_file_filter_add_mime_type(filter, mimeType);
gtk_file_filter_set_name(filter, get_filter_name_from_mime_type(mimeType));
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
filter = gtk_file_filter_new();
gtk_file_filter_add_pattern(filter, "*");
gtk_file_filter_set_name(filter, "All files");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
auto res = gtk_dialog_run(GTK_DIALOG(dialog));
if (res == GTK_RESPONSE_ACCEPT) {
g_autoptr(GError) local_err = NULL;
auto file = gtk_file_chooser_get_file(GTK_FILE_CHOOSER(dialog));
GFileOutputStream* stream = g_file_replace(file, nullptr, FALSE, G_FILE_CREATE_NONE, nullptr, &local_err);
if (stream == nullptr) {
fl_method_call_respond_error(method_call, "SAVE_FILE_ERROR", local_err->message, nullptr, nullptr);
} else {
gboolean ok = g_output_stream_write_all(G_OUTPUT_STREAM(stream), data, dataLen, nullptr, nullptr, &local_err);
if (!ok) {
fl_method_call_respond_error(method_call, "SAVE_FILE_ERROR", local_err->message, nullptr, nullptr);
} else {
ok = g_output_stream_flush(G_OUTPUT_STREAM(stream), nullptr, &local_err);
if (!ok) {
fl_method_call_respond_error(method_call, "SAVE_FILE_ERROR", local_err->message, nullptr, nullptr);
} else {
ok = g_output_stream_close(G_OUTPUT_STREAM(stream), nullptr, &local_err);
if (!ok) {
fl_method_call_respond_error(method_call, "SAVE_FILE_ERROR", local_err->message, nullptr, nullptr);
} else {
fl_method_call_respond_success(method_call, nullptr, nullptr);
}
}
}
g_object_unref(stream);
}
g_object_unref(file);
} else {
fl_method_call_respond_error(method_call, "USER_CANCELED", "User canceled", nullptr, nullptr);
}
gtk_widget_destroy(dialog);
}
}
// Implements GApplication::activate.
static void my_application_activate(GApplication* application) {
MyApplication* self = MY_APPLICATION(application);
@@ -81,6 +182,10 @@ static void my_application_activate(GApplication* application) {
fl_engine_get_binary_messenger(fl_view_get_engine(view)), "lifegpc.eh_downloader_flutter/path",
FL_METHOD_CODEC(codec));
fl_method_channel_set_method_call_handler(self->path_channel, on_path_channel_call, self, nullptr);
self->saf_channel = fl_method_channel_new(
fl_engine_get_binary_messenger(fl_view_get_engine(view)), "lifegpc.eh_downloader_flutter/saf",
FL_METHOD_CODEC(codec));
fl_method_channel_set_method_call_handler(self->saf_channel, on_saf_channel_call, self, nullptr);
gtk_widget_grab_focus(GTK_WIDGET(view));
}
@@ -109,6 +214,7 @@ static void my_application_dispose(GObject* object) {
MyApplication* self = MY_APPLICATION(object);
g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
g_clear_object(&self->path_channel);
g_clear_object(&self->saf_channel);
G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
}