def paintEvent(self, event):
QWidget.paintEvent(self, event)
pmap = self._pixmap
if pmap.isNull():
return
w, h = pmap.width(), pmap.height()
ow, oh = w, h
cw, ch = self.rect().width(), self.rect().height()
scaled, nw, nh = fit_image(w, h, cw, ch)
if scaled:
pmap = pmap.scaled(int(nw * pmap.devicePixelRatio()),
int(nh * pmap.devicePixelRatio()),
Qt.AspectRatioMode.IgnoreAspectRatio,
Qt.TransformationMode.SmoothTransformation)
w, h = int(pmap.width() / pmap.devicePixelRatio()), int(
pmap.height() / pmap.devicePixelRatio())
x = int(abs(cw - w) / 2)
y = int(abs(ch - h) / 2)
target = QRect(x, y, w, h)
p = QPainter(self)
p.setRenderHints(QPainter.RenderHint.Antialiasing
| QPainter.RenderHint.SmoothPixmapTransform)
p.drawPixmap(target, pmap)
if self.draw_border:
pen = QPen()
pen.setWidth(self.BORDER_WIDTH)
p.setPen(pen)
p.drawRect(target)
if self.show_size:
draw_size(p, target, ow, oh)
p.end()
def drag_icon(self, cover, multiple):
cover = cover.scaledToHeight(120,
Qt.TransformationMode.SmoothTransformation)
if multiple:
base_width = cover.width()
base_height = cover.height()
base = QImage(base_width + 21, base_height + 21,
QImage.Format.Format_ARGB32_Premultiplied)
base.fill(QColor(255, 255, 255, 0).rgba())
p = QPainter(base)
rect = QRect(20, 0, base_width, base_height)
p.fillRect(rect, QColor('white'))
p.drawRect(rect)
rect.moveLeft(10)
rect.moveTop(10)
p.fillRect(rect, QColor('white'))
p.drawRect(rect)
rect.moveLeft(0)
rect.moveTop(20)
p.fillRect(rect, QColor('white'))
p.save()
p.setCompositionMode(
QPainter.CompositionMode.CompositionMode_SourceAtop)
p.drawImage(rect.topLeft(), cover)
p.restore()
p.drawRect(rect)
p.end()
cover = base
return QPixmap.fromImage(cover)
def failed_img(self):
if self._failed_img is None:
try:
dpr = self.devicePixelRatioF()
except AttributeError:
dpr = self.devicePixelRatio()
i = QImage(200, 150, QImage.Format.Format_ARGB32)
i.setDevicePixelRatio(dpr)
i.fill(Qt.GlobalColor.white)
p = QPainter(i)
r = i.rect().adjusted(10, 10, -10, -10)
n = QPen(Qt.PenStyle.DashLine)
n.setColor(Qt.GlobalColor.black)
p.setPen(n)
p.drawRect(r)
p.setPen(Qt.GlobalColor.black)
f = self.font()
f.setPixelSize(20)
p.setFont(f)
p.drawText(r.adjusted(10, 0, -10, 0), Qt.AlignmentFlag.AlignCenter | Qt.TextFlag.TextWordWrap, _('Image could not be rendered'))
p.end()
self._failed_img = QPixmap.fromImage(i)
return self._failed_img
def decoration_for_style(palette, style, icon_size, device_pixel_ratio, is_dark):
style_key = (is_dark, icon_size, device_pixel_ratio, tuple((k, style[k]) for k in sorted(style)))
sentinel = object()
ans = decoration_cache.get(style_key, sentinel)
if ans is not sentinel:
return ans
ans = None
kind = style.get('kind')
if kind == 'color':
key = 'dark' if is_dark else 'light'
val = style.get(key)
if val is None:
which = style.get('which')
val = (builtin_colors_dark if is_dark else builtin_colors_light).get(which)
if val is None:
val = style.get('background-color')
if val is not None:
ans = QColor(val)
elif kind == 'decoration':
which = style.get('which')
if which is not None:
q = builtin_decorations.get(which)
if q is not None:
style = q
sz = int(math.ceil(icon_size * device_pixel_ratio))
canvas = QImage(sz, sz, QImage.Format.Format_ARGB32)
canvas.fill(Qt.GlobalColor.transparent)
canvas.setDevicePixelRatio(device_pixel_ratio)
p = QPainter(canvas)
p.setRenderHint(QPainter.RenderHint.Antialiasing, True)
p.setPen(palette.color(QPalette.ColorRole.WindowText))
irect = QRect(0, 0, icon_size, icon_size)
adjust = -2
text_rect = p.drawText(irect.adjusted(0, adjust, 0, adjust), Qt.AlignmentFlag.AlignHCenter| Qt.AlignmentFlag.AlignTop, 'a')
p.drawRect(irect)
fm = p.fontMetrics()
pen = p.pen()
if 'text-decoration-color' in style:
pen.setColor(QColor(style['text-decoration-color']))
lstyle = style.get('text-decoration-style') or 'solid'
q = {'dotted': Qt.PenStyle.DotLine, 'dashed': Qt.PenStyle.DashLine, }.get(lstyle)
if q is not None:
pen.setStyle(q)
lw = fm.lineWidth()
if lstyle == 'double':
lw * 2
pen.setWidth(fm.lineWidth())
q = style.get('text-decoration-line') or 'underline'
pos = text_rect.bottom()
height = irect.bottom() - pos
if q == 'overline':
pos = height
elif q == 'line-through':
pos = text_rect.center().y() - adjust - lw // 2
p.setPen(pen)
if lstyle == 'wavy':
p.drawPath(wavy_path(icon_size, height, pos))
else:
p.drawLine(0, pos, irect.right(), pos)
p.end()
ans = QPixmap.fromImage(canvas)
elif 'background-color' in style:
ans = QColor(style['background-color'])
decoration_cache[style_key] = ans
return ans
