VuoInputEditorIcon.hh

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#pragma once
 
#include <QtGui/QIcon>
 
#include "VuoInputEditor.hh"
 
class VuoInputEditorIcon
{
public:
    static QPixmap * renderPixmap(void (^render)(QPainter &p), int width=16, int height=16)
    {
        if (!render)
            return NULL;
 
        qreal devicePixelRatio = qApp->primaryScreen()->devicePixelRatio();
        QPixmap *px = new QPixmap(width*devicePixelRatio, height*devicePixelRatio);
        px->setDevicePixelRatio(devicePixelRatio);
        px->fill(Qt::transparent);
 
        QPainter p(px);
        p.setRenderHint(QPainter::Antialiasing);
        render(p);
 
        return px;
    }
 
    static QIcon * renderIcon(void (^render)(QPainter &p), int width=16, int height=16)
    {
        QPixmap *px = renderPixmap(render, width, height);
 
        // https://b33p.net/kosada/node/12462
        px->setDevicePixelRatio(1);
 
        QIcon *icon = new QIcon(*px);
        delete px;
 
        return icon;
    }
 
    static QPixmap *renderErrorPixmap(bool isDark)
    {
        const int size = 12;
        return renderPixmap(^(QPainter &p){
            p.setPen(QPen(QColor(isDark ? "#a82c2c" : "#dc3e39"), 0));
            p.setBrush(QColor(isDark ? "#cc433f" : "#ff554e"));
            QRectF r(0.5, 0.5, size-1, size-1);
            p.drawEllipse(r);
            p.setPen(QColor(255,255,255, isDark ? 192 : 255));
            p.setBrush(Qt::NoBrush);
            p.setFont(QFont(VuoInputEditor::getDefaultFont().family(), 11, QFont::Bold));
            p.drawText(r, Qt::AlignCenter, "!");
        },
        size, size);
    }
};