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#include "common.hh"
#include "xcb_colors.hh"
#include "xcb_connection.hh"
#include "xcb_event.hh"
#include <map>
#include <vector>
#include <xcb/xproto.h>
namespace xcb {
namespace {
class ColorsImpl : public Colors {
public:
ColorsImpl(shared_conn conn, xcb_colormap_t colormap)
: conn_(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 Color(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:
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>(conn, colormap);
}
} // namespace xcb
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