painthelper.h - mozsearch

// Copyright (C) 2025 The Qt Company Ltd.

// Copyright (C) 2018 QUIt Coding <info@quitcoding.com>

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#ifndef PAINTHELPER_H

#define PAINTHELPER_H

#include <algorithm>

#include <QImage>

#include "qcanvaspainter.h"

#include "qcanvasradialgradient.h"

#include "qcanvasimagepattern.h"

inline void paintHelloItem(QCanvasPainter *p, float width, float height, QCanvasImage *heartImage = nullptr, float patternSizeFactor = 0.02f)

    float size = std::min(width, height);

    QPointF center(width/2, height/2);

    // Paint the background circle

    QCanvasRadialGradient gradient1(center.x(), center.y() - size*0.1, 0, size*0.6);

    gradient1.setStartColor("#909090");

    gradient1.setEndColor("#404040");

    p->beginPath();

    p->circle(center, size*0.46);

    p->setFillStyle(gradient1);

    p->fill();

    p->setStrokeStyle("#202020");

    p->setLineWidth(size*0.02);

    p->stroke();

    // Hello text

    p->setTextAlign(QCanvasPainter::TextAlign::Center);

    p->setTextBaseline(QCanvasPainter::TextBaseline::Middle);

    QFont font1;

    font1.setWeight(QFont::Weight::Bold);

    font1.setItalic(true);

    font1.setPixelSize(size*0.08);

    p->setFont(font1);

    p->setFillStyle("#B0D040");

    p->fillText("HELLO", center.x(), center.y() - size*0.18);

    // QCanvasPainter text

    QFont font2;

    font2.setWeight(QFont::Weight::Thin);

    font2.setPixelSize(size*0.12);

    p->setFont(font2);

    p->fillText("QCanvasPainter", center.x(), center.y() - size*0.08);

    // Paint heart

    static QImage logoImage(":/quitlogo.png");

    // The QCanvasImage must not be static, the underlying texture needs to be

    // recreated if the QRhi (and so the renderer) changes, when reparenting to

    // a new top-level for instance.

    QCanvasImage logo = p->addImage(logoImage, QCanvasPainter::ImageFlag::Repeat);

    float patternSize = size * patternSizeFactor;

    QCanvasImagePattern pattern(heartImage ? *heartImage : logo, center.x(), center.y(), patternSize, patternSize);

    p->setFillStyle(pattern);

    p->setLineCap(QCanvasPainter::LineCap::Round);

    p->setStrokeStyle("#B0D040");

    p->beginPath();

    p->moveTo(center.x(), center.y() + size*0.3);

    p->bezierCurveTo(center.x() - size*0.25, center.y() + size*0.1,

                     center.x() - size*0.05, center.y() + size*0.05,

                     center.x(), center.y() + size*0.15);

    p->bezierCurveTo(center.x() + size*0.05, center.y() + size*0.05,

                     center.x() + size*0.25, center.y() + size*0.1,

                     center.x(), center.y() + size*0.3);

    p->stroke();

    p->fill();

#endif // PAINTHELPER_H