@Override
protected void resizeEvent(QResizeEvent event) {
if (width() > image.width() || height() > image.height()) {
int newWidth = Math.max(width() + 128, image.width());
int newHeight = Math.max(height() + 128, image.height());
image = resizeImage(image, new QSize(newWidth, newHeight));
update();
}
super.resizeEvent(event);
}
private static QImage warpImage(QImage src, int warp, int sign) {
int w = src.width();
int ppl = src.bytesPerLine() / 4;
int srch = src.height();
int desth = srch + warp;
QImage dest = new QImage(w, desth, QImage.Format.Format_ARGB32_Premultiplied);
dest.fill(0);
QNativePointer sbits = src.bits();
QNativePointer dbits = dest.bits();
sbits.setVerificationEnabled(false);
dbits.setVerificationEnabled(false);
double r = w / 2.0;
int extra_offset = sign >= 0 ? 0 : warp;
for (int x = 0; x < w; ++x) {
int oset = (int) (((Math.sqrt(Math.abs(r * r - (x - r) * (x - r)))) * sign / r) * warp);
for (int y = 0; y < srch; ++y) {
int p = sbits.intAt(y * ppl + x);
dbits.setIntAt(((y + oset + extra_offset) * ppl) + x, p);
}
}
return dest;
}
private static QImage makeShade(QImage image, boolean highlight, boolean darker) {
double shade_alpha = 0.8;
double shade_size = 0.2;
double hl_pos = GOLDEN_MEAN;
QColor shade_color = QColor.fromRgbF(0, 0, 0, shade_alpha);
QColor transparent = darker ? QColor.fromRgbF(0, 0, 0, 0.25) : QColor.fromRgbF(0, 0, 0, 0);
QColor hl_color = QColor.fromRgbF(1, 1, 1, 0.7);
image = image.copy();
QPainter p = new QPainter();
p.begin(image);
p.scale(image.width(), image.height());
QLinearGradient lg = new QLinearGradient(0, 0, 1, 0);
lg.setColorAt(0, shade_color);
lg.setColorAt(shade_size, transparent);
if (highlight) lg.setColorAt(hl_pos, hl_color);
lg.setColorAt(1 - shade_size, transparent);
lg.setColorAt(1, shade_color);
p.fillRect(0, 0, 1, 1, new QBrush(lg));
if (highlight) {
QRadialGradient rg = new QRadialGradient(hl_pos, 1 - hl_pos, 0.4, hl_pos, 1 - hl_pos);
rg.setColorAt(0, hl_color);
rg.setColorAt(1, transparent);
p.fillRect(0, 0, 1, 1, new QBrush(rg));
}
p.end();
return image;
}
@Override
protected void paintEvent(QPaintEvent e) {
m_smoke_effect.next();
QPainter p = new QPainter();
p.begin(this);
p.fillRect(rect(), new QBrush(QColor.white));
// p.fillRect(rect(), new QBrush(Qt.CrossPattern));
p.drawImage(50, 80, m_logo);
p.setRenderHint(QPainter.RenderHint.SmoothPixmapTransform);
QImage im = m_smoke_effect.image();
p.drawImage(
new QRect(50, -20, im.width(), im.height()),
im,
new QRect(0, (int) (im.height() * 0.60), im.width(), (int) (im.height() * 0.39)));
p.end();
}