1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* Copyright 2026 Joel Klinghed
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "xcb_colors.hh"
#include "xcb_connection.hh"
#include "xcb_event.hh"
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include <xcb/xproto.h>
namespace xcb {
namespace {
class ColorsImpl : public Colors {
public:
ColorsImpl(shared_conn conn, xcb_colormap_t colormap)
: conn_(std::move(conn)),
colormap_(colormap),
storage_(std::make_shared<StorageImpl>()) {}
Color get_with_fallback(uint8_t r, uint8_t g, uint8_t b,
uint32_t fallback) override {
auto key = make_key(r, g, b);
auto it = index_.find(key);
size_t index;
if (it == index_.end()) {
index = cookie_.size();
cookie_.push_back(xcb_alloc_color(
conn_.get(), colormap_, static_cast<uint16_t>(r) << 8,
static_cast<uint16_t>(g) << 8, static_cast<uint16_t>(b) << 8));
fallback_.push_back(fallback);
index_.emplace(key, index);
} else {
index = it->second;
}
return {storage_, index};
}
bool sync() override {
std::vector<uint32_t> colors;
colors.reserve(cookie_.size());
for (size_t i = 0; i < cookie_.size(); ++i) {
xcb::reply<xcb_alloc_color_reply_t> reply(
xcb_alloc_color_reply(conn_.get(), cookie_[i], nullptr));
if (reply) {
colors.push_back(reply->pixel);
} else {
colors.push_back(fallback_[i]);
}
}
storage_->set(std::move(colors));
return true;
}
private:
class StorageImpl : public Storage {
public:
[[nodiscard]]
uint32_t get(size_t id) const override {
assert(id < resolved_.size());
return resolved_[id];
}
void set(std::vector<uint32_t> resolved) {
resolved_ = std::move(resolved);
}
private:
std::vector<uint32_t> resolved_;
};
static uint32_t make_key(uint8_t r, uint8_t g, uint8_t b) {
return static_cast<uint32_t>(r) << 16 | static_cast<uint32_t>(g) << 8 | b;
}
shared_conn conn_;
xcb_colormap_t colormap_;
std::map<uint32_t, size_t> index_;
std::vector<xcb_alloc_color_cookie_t> cookie_;
std::vector<uint32_t> fallback_;
std::shared_ptr<StorageImpl> storage_;
};
} // namespace
std::unique_ptr<Colors> Colors::create(shared_conn conn,
xcb_colormap_t colormap) {
return std::make_unique<ColorsImpl>(std::move(conn), colormap);
}
} // namespace xcb
|
