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#pragma once
#include <QFontMetrics>
#include <QPaintDevice>
#include <QPainter>
#include <QPainterPath>
#include <QtGlobal>
class Painter : public QPainter
{
public:
explicit Painter(QPaintDevice *device)
: QPainter(device)
{}
void drawTextLeft(int x, int y, const QString &text)
{
QFontMetrics m(fontMetrics());
drawText(x, y + m.ascent(), text);
}
void drawTextRight(int x, int y, int outerw, const QString &text, int textWidth = -1)
{
QFontMetrics m(fontMetrics());
if (textWidth < 0) {
#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
// deprecated in 5.13:
textWidth = m.width(text);
#else
textWidth = m.horizontalAdvance(text);
#endif
}
drawText((outerw - x - textWidth), y + m.ascent(), text);
}
void drawPixmapLeft(int x, int y, const QPixmap &pix, const QRect &from)
{
drawPixmap(QPoint(x, y), pix, from);
}
void drawPixmapLeft(const QPoint &p, const QPixmap &pix, const QRect &from)
{
return drawPixmapLeft(p.x(), p.y(), pix, from);
}
void drawPixmapLeft(int x, int y, int w, int h, const QPixmap &pix, const QRect &from)
{
drawPixmap(QRect(x, y, w, h), pix, from);
}
void drawPixmapLeft(const QRect &r, const QPixmap &pix, const QRect &from)
{
return drawPixmapLeft(r.x(), r.y(), r.width(), r.height(), pix, from);
}
void drawPixmapLeft(int x, int y, int outerw, const QPixmap &pix)
{
Q_UNUSED(outerw);
drawPixmap(QPoint(x, y), pix);
}
void drawPixmapLeft(const QPoint &p, int outerw, const QPixmap &pix)
{
return drawPixmapLeft(p.x(), p.y(), outerw, pix);
}
void drawPixmapRight(int x, int y, int outerw, const QPixmap &pix, const QRect &from)
{
drawPixmap(
QPoint((outerw - x - (from.width() / pix.devicePixelRatio())), y), pix, from);
}
void drawPixmapRight(const QPoint &p, int outerw, const QPixmap &pix, const QRect &from)
{
return drawPixmapRight(p.x(), p.y(), outerw, pix, from);
}
void drawPixmapRight(int x,
int y,
int w,
int h,
int outerw,
const QPixmap &pix,
const QRect &from)
{
drawPixmap(QRect((outerw - x - w), y, w, h), pix, from);
}
void drawPixmapRight(const QRect &r, int outerw, const QPixmap &pix, const QRect &from)
{
return drawPixmapRight(r.x(), r.y(), r.width(), r.height(), outerw, pix, from);
}
void drawPixmapRight(int x, int y, int outerw, const QPixmap &pix)
{
drawPixmap(QPoint((outerw - x - (pix.width() / pix.devicePixelRatio())), y), pix);
}
void drawPixmapRight(const QPoint &p, int outerw, const QPixmap &pix)
{
return drawPixmapRight(p.x(), p.y(), outerw, pix);
}
void drawAvatar(const QPixmap &pix, int w, int h, int d)
{
QPainterPath pp;
pp.addEllipse((w - d) / 2, (h - d) / 2, d, d);
QRect region((w - d) / 2, (h - d) / 2, d, d);
setClipPath(pp);
drawPixmap(region, pix);
}
void drawLetterAvatar(const QString &c,
const QColor &penColor,
const QColor &brushColor,
int w,
int h,
int d)
{
QRect region((w - d) / 2, (h - d) / 2, d, d);
setPen(Qt::NoPen);
setBrush(brushColor);
drawEllipse(region.center(), d / 2, d / 2);
setBrush(Qt::NoBrush);
drawEllipse(region.center(), d / 2, d / 2);
setPen(penColor);
drawText(region.translated(0, -1), Qt::AlignCenter, c);
}
};
class PainterHighQualityEnabler
{
public:
PainterHighQualityEnabler(Painter &p)
: _painter(p)
{
hints_ = QPainter::Antialiasing | QPainter::SmoothPixmapTransform |
QPainter::TextAntialiasing;
_painter.setRenderHints(hints_);
}
~PainterHighQualityEnabler()
{
if (hints_)
_painter.setRenderHints(hints_, false);
}
PainterHighQualityEnabler(const PainterHighQualityEnabler &other) = delete;
PainterHighQualityEnabler &operator=(const PainterHighQualityEnabler &other) = delete;
private:
Painter &_painter;
QPainter::RenderHints hints_ = {};
};
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