| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "client.h" |
| #include "resolution.h" |
| |
| #include <guacamole/user.h> |
| |
| int guac_rdp_resolution_reasonable(guac_user* user, int resolution) { |
| |
| int width = user->info.optimal_width; |
| int height = user->info.optimal_height; |
| |
| /* Convert user pixels to remote pixels */ |
| width = width * resolution / user->info.optimal_resolution; |
| height = height * resolution / user->info.optimal_resolution; |
| |
| /* |
| * Resolution is reasonable if the same as the user optimal resolution |
| * OR if the resulting display area is reasonable |
| */ |
| return user->info.optimal_resolution == resolution |
| || width*height >= GUAC_RDP_REASONABLE_AREA; |
| |
| } |
| |
| int guac_rdp_suggest_resolution(guac_user* user) { |
| |
| /* Prefer RDP's native resolution */ |
| if (guac_rdp_resolution_reasonable(user, GUAC_RDP_NATIVE_RESOLUTION)) |
| return GUAC_RDP_NATIVE_RESOLUTION; |
| |
| /* If native resolution is too tiny, try higher resolution */ |
| if (guac_rdp_resolution_reasonable(user, GUAC_RDP_HIGH_RESOLUTION)) |
| return GUAC_RDP_HIGH_RESOLUTION; |
| |
| /* Fallback to user-suggested resolution */ |
| return user->info.optimal_resolution; |
| |
| } |
| |