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/*
* Copyright (c) 2020, William McPherson <willmcpherson2@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "SamplerWidget.h"
#include "TrackManager.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(TrackManager& track_manager)
: m_track_manager(track_manager)
{
}
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_track_manager.current_track().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::IntPoint left_point1(prev_x * width_scale, left_prev_y);
Gfx::IntPoint left_point2(x * width_scale, left_y);
painter.draw_line(left_point1, left_point2, left_wave_colors[RecordedSample]);
Gfx::IntPoint right_point1(prev_x * width_scale, right_prev_y);
Gfx::IntPoint 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(TrackManager& track_manager)
: m_track_manager(track_manager)
{
set_layout<GUI::VerticalBoxLayout>();
layout()->set_margins(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_fixed_height(24);
m_open_button = m_open_button_and_recorded_sample_name_container->add<GUI::Button>();
m_open_button->set_fixed_size(24, 24);
m_open_button->set_focus_policy(GUI::FocusPolicy::TabFocus);
m_open_button->set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/open.png").release_value_but_fixme_should_propagate_errors());
m_open_button->on_click = [this](auto) {
Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
if (!open_path.has_value())
return;
String error_string = m_track_manager.current_track().set_recorded_sample(open_path.value());
if (!error_string.is_empty()) {
GUI::MessageBox::show(window(), String::formatted("Failed to load WAV file: {}", 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_track_manager);
m_wave_editor->set_fixed_height(100);
}
SamplerWidget::~SamplerWidget()
{
}
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