258 lines
8.2 KiB
C++
258 lines
8.2 KiB
C++
#include "Plot_p.h"
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#include "../bridge/Qt_Event_Adapter.h"
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#include "../bridge/Qt_Image_Adapter.h"
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#include "../bridge/Qt_Presentation_Sink.h"
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#include <QFont>
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#include <QMouseEvent>
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#include <QPainter>
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#include <QResizeEvent>
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#include <QTimer>
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#include <QWheelEvent>
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#include <algorithm>
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#include <cmath>
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namespace renderive {
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namespace {
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Color from_qcolor(const QColor& color) {
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return {
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static_cast<std::uint8_t>(color.red()),
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static_cast<std::uint8_t>(color.green()),
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static_cast<std::uint8_t>(color.blue()),
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static_cast<std::uint8_t>(color.alpha())
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};
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}
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QColor to_qcolor(Color color) {
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return QColor(color.r, color.g, color.b, color.a);
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}
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} // namespace
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Abs_Plot_Private::Abs_Plot_Private(bool continuous_rendering)
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: scene(std::make_unique<Render_Scene_2D>()), continuous(continuous_rendering) {}
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Abs_Plot_Private::~Abs_Plot_Private() = default;
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void Abs_Plot_Private::attach_widget(Abs_Plot* plot) {
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presentation_sink = std::make_shared<Qt_Presentation_Sink>(plot);
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scene->set_presentation_sink(presentation_sink);
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timer = new QTimer(plot);
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timer->setTimerType(Qt::PreciseTimer);
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QObject::connect(timer, &QTimer::timeout, plot, [this] {
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if (!scene->view_active())
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return;
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const auto result = scene->render_frame();
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if (!result &&
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(result.error() == Plot_Render_Frame_Error::external_failure ||
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result.error() == Plot_Render_Frame_Error::scene_shutting_down))
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timer->stop();
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});
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}
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Abs_Plot::Abs_Plot(Abs_Plot_Private* private_data)
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: d(private_data) {
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d->attach_widget(this);
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setAttribute(Qt::WA_OpaquePaintEvent, true);
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setMouseTracking(true);
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setFocusPolicy(Qt::NoFocus);
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update_render_interval();
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}
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Abs_Plot::~Abs_Plot() {
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if (!d)
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return;
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if (d->timer)
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d->timer->stop();
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d->scene->deactivate_view();
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delete d;
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d = nullptr;
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}
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void Abs_Plot::init() {
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d->scene->init();
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}
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Render_Scene_2D* Abs_Plot::scene() const {
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return d ? d->scene.get() : nullptr;
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}
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renderive_Owner<Renderable> Abs_Plot::root_renderable() const {
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return d->scene->root_renderable();
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}
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QColor Abs_Plot::background_color() const {
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return to_qcolor(d->scene->background_color());
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}
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void Abs_Plot::set_background_color(const QColor& color) {
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d->scene->set_background_color(from_qcolor(color));
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}
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void Abs_Plot::start_render_timer() {
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d->scene->activate_view();
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update_render_interval();
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if (d->timer && !d->timer->isActive())
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d->timer->start();
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}
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void Abs_Plot::stop_render_timer() {
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if (d->timer)
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d->timer->stop();
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d->scene->deactivate_view();
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}
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void Abs_Plot::update_render_interval() {
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if (!d->timer)
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return;
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const double fps = std::max(1.0, d->scene->max_render_fps());
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d->timer->setInterval(std::max(1, static_cast<int>(std::lround(1000.0 / fps))));
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}
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void Abs_Plot::paintEvent(QPaintEvent*) {
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d->paint_event(this);
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}
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void Abs_Plot_Private::paint_event(Abs_Plot* plot) {
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QPainter painter(plot);
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painter.fillRect(plot->rect(), plot->background_color());
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scene->with_frame([&painter](Image_View view) {
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if (!view.empty())
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painter.drawImage(QPoint(0, 0), Qt_Image_Adapter::to_qimage(view));
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});
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draw_performance_overlay(plot, painter);
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painter.end();
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}
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void Abs_Plot_Private::draw_performance_overlay(Abs_Plot* plot, QPainter& painter) {
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const auto overlay = scene->performance_overlay();
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if (!overlay || !overlay->enabled())
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return;
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const auto snapshot = overlay->display_snapshot();
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if (!snapshot || snapshot->viewport_size != scene->viewport_size())
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return;
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const auto& options = snapshot->style;
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QFont font = painter.font();
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font.setPointSizeF(std::max(1.0, options.font.size));
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font.setWeight(std::clamp(options.font.weight / 10, 0, 99));
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font.setItalic(options.font.italic);
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painter.setFont(font);
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const QFontMetrics metrics(font);
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const int line_height = std::max(1, metrics.height() + 2);
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const int left_margin = std::max(0, options.left_margin);
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const int right_margin = std::max(0, options.right_margin);
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const int top_margin = std::max(0, options.top_margin);
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const int bottom_margin = std::max(0, options.bottom_margin);
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int text_width{};
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for (const auto& line : snapshot->lines)
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text_width = std::max(text_width, metrics.horizontalAdvance(QString::fromStdString(line)));
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const int panel_width = std::min(plot->width(), left_margin + text_width + right_margin);
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const int panel_height = std::min(
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plot->height(), top_margin + bottom_margin +
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line_height * static_cast<int>(snapshot->lines.size()));
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painter.fillRect(QRect(0, 0, panel_width, panel_height), to_qcolor(options.background));
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int y = top_margin + metrics.ascent();
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for (std::size_t index = 0; index < snapshot->lines.size(); ++index) {
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const QString line = QString::fromStdString(snapshot->lines[index]);
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if (index == 0) {
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painter.setPen(to_qcolor(options.section_color));
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painter.drawText(left_margin, y, line);
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} else if (const qsizetype separator = line.indexOf(':'); separator >= 0) {
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const QString label = line.left(separator + 1);
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painter.setPen(to_qcolor(options.label_color));
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painter.drawText(left_margin, y, label);
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painter.setPen(to_qcolor(options.value_color));
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painter.drawText(left_margin + metrics.horizontalAdvance(label), y,
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line.mid(separator + 1));
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} else {
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painter.setPen(to_qcolor(options.label_color));
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painter.drawText(left_margin, y, line);
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}
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y += line_height;
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}
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}
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bool Abs_Plot::event(QEvent* event) {
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const auto dispatch = [this, event](const Event& translated) {
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d->scene->dispatch_event(translated);
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if (!translated.is_accepted())
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return false;
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event->accept();
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return true;
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};
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switch (event->type()) {
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case QEvent::Resize: {
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auto* resize = static_cast<QResizeEvent*>(event);
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d->scene->set_viewport_size(Qt_Event_Adapter::to_size(resize->size()));
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d->scene->dispatch_event(Qt_Event_Adapter::to_resize_event(resize));
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break;
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}
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case QEvent::Show:
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d->scene->dispatch_event(Event(Event_Type::Show));
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if (d->continuous)
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start_render_timer();
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break;
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case QEvent::Hide:
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d->scene->dispatch_event(Event(Event_Type::Hide));
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if (d->continuous)
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stop_render_timer();
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break;
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case QEvent::Leave: {
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const Event translated(Event_Type::Leave);
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::Wheel: {
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const auto translated = Qt_Event_Adapter::to_wheel_event(
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static_cast<QWheelEvent*>(event));
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::MouseMove: {
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const auto translated = Qt_Event_Adapter::to_pointer_event(
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static_cast<QMouseEvent*>(event), Event_Type::Pointer_Move);
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::MouseButtonPress: {
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const auto translated = Qt_Event_Adapter::to_pointer_event(
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static_cast<QMouseEvent*>(event), Event_Type::Pointer_Press);
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::MouseButtonRelease: {
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const auto translated = Qt_Event_Adapter::to_pointer_event(
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static_cast<QMouseEvent*>(event), Event_Type::Pointer_Release);
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::KeyPress: {
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const auto translated = Qt_Event_Adapter::to_key_event(
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static_cast<QKeyEvent*>(event), Event_Type::Key_Press);
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if (dispatch(translated))
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return true;
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break;
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}
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case QEvent::KeyRelease: {
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const auto translated = Qt_Event_Adapter::to_key_event(
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static_cast<QKeyEvent*>(event), Event_Type::Key_Release);
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if (dispatch(translated))
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return true;
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break;
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}
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default:
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break;
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}
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return QWidget::event(event);
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}
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} // namespace renderive
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