class CoverView(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.current_pixmap_size = QSize(0, 0)
self.pixmap = QPixmap()
self.setSizePolicy(QSizePolicy.Policy.Expanding,
QSizePolicy.Policy.Expanding)
def set_pixmap(self, data):
self.pixmap.loadFromData(data)
self.current_pixmap_size = self.pixmap.size()
self.update()
def paintEvent(self, event):
if self.pixmap.isNull():
return
canvas_size = self.rect()
width = self.current_pixmap_size.width()
extrax = canvas_size.width() - width
if extrax < 0:
extrax = 0
x = int(extrax / 2.)
height = self.current_pixmap_size.height()
extray = canvas_size.height() - height
if extray < 0:
extray = 0
y = int(extray / 2.)
target = QRect(x, y, min(canvas_size.width(), width),
min(canvas_size.height(), height))
p = QPainter(self)
p.setRenderHints(QPainter.RenderHint.Antialiasing
| QPainter.RenderHint.SmoothPixmapTransform)
p.drawPixmap(
target,
self.pixmap.scaled(target.size(),
Qt.AspectRatioMode.KeepAspectRatio,
Qt.TransformationMode.SmoothTransformation))
p.end()
def sizeHint(self):
return QSize(300, 400)
class ImageView(QWidget, ImageDropMixin):
BORDER_WIDTH = 1
cover_changed = pyqtSignal(object)
def __init__(self,
parent=None,
show_size_pref_name=None,
default_show_size=False):
QWidget.__init__(self, parent)
self.show_size_pref_name = (
'show_size_on_cover_' +
show_size_pref_name) if show_size_pref_name else None
self._pixmap = QPixmap()
self.setMinimumSize(QSize(150, 200))
ImageDropMixin.__init__(self)
self.draw_border = True
self.show_size = False
if self.show_size_pref_name:
self.show_size = gprefs.get(self.show_size_pref_name,
default_show_size)
def setPixmap(self, pixmap):
if not isinstance(pixmap, QPixmap):
raise TypeError('Must use a QPixmap')
self._pixmap = pixmap
self.updateGeometry()
self.update()
def build_context_menu(self):
m = ImageDropMixin.build_context_menu(self)
if self.show_size_pref_name:
text = _('Hide size in corner') if self.show_size else _(
'Show size in corner')
m.addAction(text, self.toggle_show_size)
return m
def toggle_show_size(self):
self.show_size ^= True
if self.show_size_pref_name:
gprefs[self.show_size_pref_name] = self.show_size
self.update()
def pixmap(self):
return self._pixmap
def sizeHint(self):
if self._pixmap.isNull():
return self.minimumSize()
return self._pixmap.size()
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()
