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// SPDX-License-Identifier: GPL-2.0
#include "chartitem.h"
#include "statsview.h"
#include <cmath>
#include <QQuickWindow>
#include <QSGFlatColorMaterial>
#include <QSGImageNode>
#include <QSGTexture>
static int round_up(double f)
{
return static_cast<int>(ceil(f));
}
ChartItem::ChartItem(StatsView &v, ChartZValue z) :
dirty(false), dirtyPrev(nullptr), dirtyNext(nullptr),
zValue(z), view(v)
{
}
ChartItem::~ChartItem()
{
if (dirty)
view.unregisterDirtyChartItem(*this);
}
QSizeF ChartItem::sceneSize() const
{
return view.size();
}
ChartPixmapItem::ChartPixmapItem(StatsView &v, ChartZValue z) : ChartItem(v, z),
positionDirty(false), textureDirty(false)
{
}
ChartPixmapItem::~ChartPixmapItem()
{
painter.reset(); // Make sure to destroy painter before image that is painted on
}
void ChartPixmapItem::setTextureDirty()
{
textureDirty = true;
view.registerDirtyChartItem(*this);
}
void ChartPixmapItem::setPositionDirty()
{
positionDirty = true;
view.registerDirtyChartItem(*this);
}
void ChartPixmapItem::render()
{
if (!node) {
node.reset(view.w()->createImageNode());
view.addQSGNode(node.get(), zValue);
}
if (!img) {
resize(QSizeF(1,1));
img->fill(Qt::transparent);
}
if (textureDirty) {
texture.reset(view.w()->createTextureFromImage(*img, QQuickWindow::TextureHasAlphaChannel));
node->setTexture(texture.get());
textureDirty = false;
}
if (positionDirty) {
node->setRect(rect);
positionDirty = false;
}
}
void ChartPixmapItem::resize(QSizeF size)
{
painter.reset();
img.reset(new QImage(round_up(size.width()), round_up(size.height()), QImage::Format_ARGB32));
painter.reset(new QPainter(img.get()));
painter->setRenderHint(QPainter::Antialiasing);
rect.setSize(size);
setTextureDirty();
}
void ChartPixmapItem::setPos(QPointF pos)
{
rect.moveTopLeft(pos);
setPositionDirty();
}
QRectF ChartPixmapItem::getRect() const
{
return rect;
}
ChartRectItem::ChartRectItem(StatsView &v, ChartZValue z,
const QPen &pen, const QBrush &brush, double radius) : ChartPixmapItem(v, z),
pen(pen), brush(brush), radius(radius)
{
}
ChartRectItem::~ChartRectItem()
{
}
void ChartRectItem::resize(QSizeF size)
{
ChartPixmapItem::resize(size);
img->fill(Qt::transparent);
painter->setPen(pen);
painter->setBrush(brush);
QSize imgSize = img->size();
int width = pen.width();
QRect rect(width / 2, width / 2, imgSize.width() - width, imgSize.height() - width);
painter->drawRoundedRect(rect, radius, radius, Qt::AbsoluteSize);
}
ChartLineItem::ChartLineItem(StatsView &v, ChartZValue z, QColor color, double width) : ChartItem(v, z),
color(color), width(width), positionDirty(false), materialDirty(false)
{
}
ChartLineItem::~ChartLineItem()
{
}
void ChartLineItem::render()
{
if (!node) {
geometry.reset(new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 2));
geometry->setDrawingMode(QSGGeometry::DrawLines);
material.reset(new QSGFlatColorMaterial);
node.reset(new QSGGeometryNode);
node->setGeometry(geometry.get());
node->setMaterial(material.get());
view.addQSGNode(node.get(), zValue);
positionDirty = materialDirty = true;
}
if (positionDirty) {
// Attention: width is a geometry property and therefore handled by position dirty!
geometry->setLineWidth(static_cast<float>(width));
auto vertices = geometry->vertexDataAsPoint2D();
vertices[0].set(static_cast<float>(from.x()), static_cast<float>(from.y()));
vertices[1].set(static_cast<float>(to.x()), static_cast<float>(to.y()));
node->markDirty(QSGNode::DirtyGeometry);
}
if (materialDirty) {
material->setColor(color);
node->markDirty(QSGNode::DirtyMaterial);
}
positionDirty = materialDirty = false;
}
void ChartLineItem::setLine(QPointF fromIn, QPointF toIn)
{
from = fromIn;
to = toIn;
positionDirty = true;
view.registerDirtyChartItem(*this);
}
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