mirror of
https://github.com/LadybirdBrowser/ladybird.git
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235f39e449
This was used in a lot of places, so this patch makes liberal use of ErrorOr<T>::release_value_but_fixme_should_propagate_errors().
111 lines
4.0 KiB
C++
111 lines
4.0 KiB
C++
/*
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* Copyright (c) 2020, William McPherson <willmcpherson2@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "SamplerWidget.h"
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#include "TrackManager.h"
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/FilePicker.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/MessageBox.h>
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#include <LibGUI/Painter.h>
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WaveEditor::WaveEditor(TrackManager& track_manager)
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: m_track_manager(track_manager)
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{
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}
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WaveEditor::~WaveEditor()
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{
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}
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int WaveEditor::sample_to_y(double percentage) const
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{
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double portion_of_half_height = percentage * ((frame_inner_rect().height() - 1) / 2.0);
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double y = (frame_inner_rect().height() / 2.0) + portion_of_half_height;
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return y;
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}
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void WaveEditor::paint_event(GUI::PaintEvent& event)
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{
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GUI::Frame::paint_event(event);
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GUI::Painter painter(*this);
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painter.fill_rect(frame_inner_rect(), Color::Black);
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auto recorded_sample = m_track_manager.current_track().recorded_sample();
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if (recorded_sample.is_empty())
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return;
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double width_scale = static_cast<double>(frame_inner_rect().width()) / recorded_sample.size();
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painter.translate(frame_thickness(), frame_thickness());
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int prev_x = 0;
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int left_prev_y = sample_to_y(recorded_sample[0].left);
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int right_prev_y = sample_to_y(recorded_sample[0].right);
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painter.set_pixel({ prev_x, left_prev_y }, left_wave_colors[RecordedSample]);
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painter.set_pixel({ prev_x, right_prev_y }, right_wave_colors[RecordedSample]);
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for (size_t x = 1; x < recorded_sample.size(); ++x) {
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int left_y = sample_to_y(recorded_sample[x].left);
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int right_y = sample_to_y(recorded_sample[x].right);
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Gfx::IntPoint left_point1(prev_x * width_scale, left_prev_y);
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Gfx::IntPoint left_point2(x * width_scale, left_y);
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painter.draw_line(left_point1, left_point2, left_wave_colors[RecordedSample]);
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Gfx::IntPoint right_point1(prev_x * width_scale, right_prev_y);
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Gfx::IntPoint right_point2(x * width_scale, right_y);
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painter.draw_line(right_point1, right_point2, right_wave_colors[RecordedSample]);
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prev_x = x;
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left_prev_y = left_y;
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right_prev_y = right_y;
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}
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}
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SamplerWidget::SamplerWidget(TrackManager& track_manager)
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: m_track_manager(track_manager)
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{
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set_layout<GUI::VerticalBoxLayout>();
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layout()->set_margins(10);
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layout()->set_spacing(10);
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set_fill_with_background_color(true);
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m_open_button_and_recorded_sample_name_container = add<GUI::Widget>();
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m_open_button_and_recorded_sample_name_container->set_layout<GUI::HorizontalBoxLayout>();
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m_open_button_and_recorded_sample_name_container->layout()->set_spacing(10);
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m_open_button_and_recorded_sample_name_container->set_fixed_height(24);
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m_open_button = m_open_button_and_recorded_sample_name_container->add<GUI::Button>();
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m_open_button->set_fixed_size(24, 24);
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m_open_button->set_focus_policy(GUI::FocusPolicy::TabFocus);
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m_open_button->set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/open.png").release_value_but_fixme_should_propagate_errors());
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m_open_button->on_click = [this](auto) {
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Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
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if (!open_path.has_value())
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return;
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String error_string = m_track_manager.current_track().set_recorded_sample(open_path.value());
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if (!error_string.is_empty()) {
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GUI::MessageBox::show(window(), String::formatted("Failed to load WAV file: {}", error_string.characters()), "Error", GUI::MessageBox::Type::Error);
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return;
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}
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m_recorded_sample_name->set_text(open_path.value());
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m_wave_editor->update();
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};
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m_recorded_sample_name = m_open_button_and_recorded_sample_name_container->add<GUI::Label>("No sample loaded");
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m_recorded_sample_name->set_text_alignment(Gfx::TextAlignment::CenterLeft);
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m_wave_editor = add<WaveEditor>(m_track_manager);
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m_wave_editor->set_fixed_height(100);
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}
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SamplerWidget::~SamplerWidget()
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{
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}
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