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column-assembly.cc
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column-assembly.cc
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// -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation version 2.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://gnu.org/licenses/gpl-2.0.txt>
#include "led-flaschen-taschen.h"
#include <unistd.h>
#include "multi-spi.h"
ColumnAssembly::ColumnAssembly(MultiSPI *spi)
: spi_(spi), width_(0), height_(0) {}
ColumnAssembly::~ColumnAssembly() {
for (size_t i = 0; i < columns_.size(); ++i)
delete columns_[i];
}
void ColumnAssembly::AddColumn(FlaschenTaschen *taschen) {
columns_.push_back(taschen);
width_ += 5;
height_ = std::max(height_, taschen->height());
}
void ColumnAssembly::SetPixel(int x, int y, const Color &col) {
if (x < 0 || x >= width() || y < 0 || y >= height())
return;
const int crate_from_left = x / 5;
FlaschenTaschen *column = columns_[columns_.size() - crate_from_left - 1];
// Our physical display has the (0,0) at the bottom right corner.
// Flip it around.
column->SetPixel(4 - x % 5, height() - y - 1, col);
}
void ColumnAssembly::PostDaemonInit() {
spi_->FinishRegistration();
}
void ColumnAssembly::Send() {
for (size_t i = 0; i < columns_.size(); ++i) {
columns_[i]->Send();
}
spi_->SendBuffers();
usleep(200); // WS2801 triggers on 50usec no data.
}