2 * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
28 thread_local int ScopeTrace::indent = 0;
29 ScopeTrace::ScopeTrace(char const *func) : f(func)
31 fprintf(stderr, "%lu %*s%s -->\n", pthread_self(), 2 * indent++, "", this->f);
33 ScopeTrace::~ScopeTrace() { fprintf(stderr, "%lu %*s%s <--\n", pthread_self(), 2 * --indent, "", this->f); }
36 unique_fd::~unique_fd()
44 void rectangle::fit(unsigned long to_width, unsigned long to_height)
46 // fit rect within (to_width x to_height)
48 if (to_width <= width()) {
50 set_bottom(top() + (static_cast<long>(to_width) * height() / width()) - 1);
51 set_right(left() + to_width - 1);
53 // scale to fit height
54 set_right(left() + (static_cast<long>(to_height) * width () / height()) - 1);
55 set_bottom(top() + to_height - 1);
59 void rectangle::center(unsigned long outer_w, unsigned long outer_h)
61 long inner_w = width();
62 long inner_h = height();
64 set_left((outer_w - inner_w) / 2);
65 set_right(left() + inner_w - 1);
66 set_top((outer_h - inner_h) / 2);
67 set_bottom(top() + inner_h - 1);
70 void rectangle::set_aspect(double ratio)
72 // aspect ratio is width:height (= width/height)
73 // e.g. Landscape of HD's ratio is 16:9 (= 1.777...)
74 // Portrait of HD's ratio is 9:16 (= 0.5625)
76 // width / height = ratio
77 // width * height = area
79 // width = sqrt(ratio * area)
80 // height = width / ratio
82 long orig_w = width();
83 long orig_h = height();
88 set_right(left() + orig_w - 1);
89 set_bottom(top() + static_cast<long>(orig_w / ratio + 0.5) - 1);
91 set_bottom(top() + orig_h - 1);
92 set_right(left() + static_cast<long>(orig_h * ratio + 0.5) - 1);