107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
#include "imageitem.h"
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#include <QBitmap>
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#include <QGraphicsOpacityEffect>
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#include <QRect>
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ImageItem::ImageItem(QQuickItem *parent) : QQuickPaintedItem(parent) {}
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inline static QString stringtoColor(QString string) {
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int hash = 0;
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for (int i = 0; i < string.length(); i++)
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hash = string.at(i).unicode() + ((hash << 5) - hash);
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QString colour = "#";
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for (int j = 0; j < 3; j++)
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colour += ("00" + QString::number((hash >> (j * 8)) & 0xFF, 16)).right(2);
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return colour;
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}
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inline static QImage getImageFromPaintable(QPointer<Paintable> p, QRectF b) {
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if (p.isNull()) return {};
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QImage image(p->image(int(b.width()), int(b.height())));
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if (image.isNull()) return {};
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return image;
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}
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void ImageItem::paint(QPainter *painter) {
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QRectF bounding_rect = boundingRect();
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painter->setRenderHint(QPainter::Antialiasing, true);
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QImage image(getImageFromPaintable(m_paintable, bounding_rect));
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if (image.isNull()) {
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painter->setPen(Qt::NoPen);
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if (m_color.isEmpty())
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painter->setBrush(QColor(stringtoColor(m_hint)));
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else
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painter->setBrush(QColor(m_color));
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if (m_round)
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painter->drawEllipse(0, 0, int(bounding_rect.width()),
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int(bounding_rect.height()));
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else
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painter->drawRect(0, 0, int(bounding_rect.width()),
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int(bounding_rect.height()));
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painter->setPen(QPen(Qt::white, 2));
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QFont font;
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font.setStyleHint(QFont::SansSerif);
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font.setPixelSize(int(bounding_rect.width() / 2));
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font.setBold(true);
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painter->setFont(font);
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painter->drawText(
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QRect(0, 0, int(bounding_rect.width()), int(bounding_rect.height())),
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Qt::AlignCenter, m_hint.at(0).toUpper());
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} else {
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QImage scaled = image.scaled(
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int(bounding_rect.width()) + 1, int(bounding_rect.height()) + 1,
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Qt::KeepAspectRatioByExpanding, Qt::FastTransformation);
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QPointF center = bounding_rect.center() - scaled.rect().center();
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if (m_round) {
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QPainterPath clip;
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clip.addEllipse(
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0, 0, bounding_rect.width(),
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bounding_rect.height()); // this is the shape we want to clip to
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painter->setClipPath(clip);
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}
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painter->drawImage(center, scaled);
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}
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}
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void ImageItem::setPaintable(Paintable *paintable) {
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if (!paintable) return;
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if (!m_paintable.isNull()) m_paintable->disconnect(this);
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m_paintable = paintable;
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connect(m_paintable, &Paintable::paintableChanged, this,
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[=] { this->update(); });
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emit paintableChanged();
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update();
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}
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void ImageItem::setHint(QString newHint) {
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if (m_hint != newHint) {
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m_hint = newHint;
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emit hintChanged();
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update();
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}
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}
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void ImageItem::setDefaultColor(QString color) {
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if (color != m_color) {
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m_color = color;
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emit defaultColorChanged();
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update();
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}
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}
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void ImageItem::setRound(bool value) {
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if (m_round != value) {
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m_round = value;
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emit roundChanged();
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update();
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}
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}
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