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/*
* Copyright (c) 2020-2020, William McPherson <willmcpherson2@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "SamplerWidget.h"
#include "AudioEngine.h"
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/Label.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
WaveEditor::WaveEditor(AudioEngine& audio_engine)
: m_audio_engine(audio_engine)
{
}
WaveEditor::~WaveEditor()
{
}
int WaveEditor::sample_to_y(double percentage) const
{
double portion_of_half_height = percentage * ((frame_inner_rect().height() - 1) / 2.0);
double y = (frame_inner_rect().height() / 2.0) + portion_of_half_height;
return y;
}
void WaveEditor::paint_event(GUI::PaintEvent& event)
{
GUI::Frame::paint_event(event);
GUI::Painter painter(*this);
painter.fill_rect(frame_inner_rect(), Color::Black);
auto recorded_sample = m_audio_engine.recorded_sample();
if (recorded_sample.is_empty())
return;
double width_scale = static_cast<double>(frame_inner_rect().width()) / recorded_sample.size();
painter.translate(frame_thickness(), frame_thickness());
int prev_x = 0;
int left_prev_y = sample_to_y(recorded_sample[0].left);
int right_prev_y = sample_to_y(recorded_sample[0].right);
painter.set_pixel({ prev_x, left_prev_y }, left_wave_colors[RecordedSample]);
painter.set_pixel({ prev_x, right_prev_y }, right_wave_colors[RecordedSample]);
for (size_t x = 1; x < recorded_sample.size(); ++x) {
int left_y = sample_to_y(recorded_sample[x].left);
int right_y = sample_to_y(recorded_sample[x].right);
Gfx::Point left_point1(prev_x * width_scale, left_prev_y);
Gfx::Point left_point2(x * width_scale, left_y);
painter.draw_line(left_point1, left_point2, left_wave_colors[RecordedSample]);
Gfx::Point right_point1(prev_x * width_scale, right_prev_y);
Gfx::Point right_point2(x * width_scale, right_y);
painter.draw_line(right_point1, right_point2, right_wave_colors[RecordedSample]);
prev_x = x;
left_prev_y = left_y;
right_prev_y = right_y;
}
}
SamplerWidget::SamplerWidget(AudioEngine& audio_engine)
: m_audio_engine(audio_engine)
{
set_layout<GUI::VerticalBoxLayout>();
layout()->set_margins({ 10, 10, 10, 10 });
layout()->set_spacing(10);
set_fill_with_background_color(true);
m_open_button_and_recorded_sample_name_container = add<GUI::Widget>();
m_open_button_and_recorded_sample_name_container->set_layout<GUI::HorizontalBoxLayout>();
m_open_button_and_recorded_sample_name_container->layout()->set_spacing(10);
m_open_button_and_recorded_sample_name_container->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_open_button_and_recorded_sample_name_container->set_preferred_size(0, 24);
m_open_button = m_open_button_and_recorded_sample_name_container->add<GUI::Button>();
m_open_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
m_open_button->set_preferred_size(24, 24);
m_open_button->set_focusable(false);
m_open_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/open.png"));
m_open_button->on_click = [this] {
Optional<String> open_path = GUI::FilePicker::get_open_filepath();
if (!open_path.has_value())
return;
String error_string = m_audio_engine.set_recorded_sample(open_path.value());
if (!error_string.is_empty()) {
GUI::MessageBox::show(String::format("Failed to load WAV file: %s", error_string.characters()), "Error", GUI::MessageBox::Type::Error);
return;
}
m_recorded_sample_name->set_text(open_path.value());
m_wave_editor->update();
};
m_recorded_sample_name = m_open_button_and_recorded_sample_name_container->add<GUI::Label>("No sample loaded");
m_recorded_sample_name->set_text_alignment(Gfx::TextAlignment::CenterLeft);
m_wave_editor = add<WaveEditor>(m_audio_engine);
m_wave_editor->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_wave_editor->set_preferred_size(0, 100);
}
SamplerWidget::~SamplerWidget()
{
}
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