Files
Renderive/Qt/plot/Plot.cpp
T
2026-08-15 03:21:01 +08:00

253 lines
8.0 KiB
C++

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