class ScalingImage(QWidget):
"""Изображение, которое масштабируется вместе с родительским объектом,
сохраняя пропорции."""
def __init__(self, parent=None):
QWidget.__init__(self, parent=parent)
self.pix_map = QPixmap()
def setPixmap(self, pix_map):
"""Задать картинку."""
self.pix_map = pix_map
self.update()
def paintEvent(self, event):
"""Метод отвечает за отрисовку картинки."""
if not self.pix_map.isNull():
painter = QPainter(self)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
width, height = self.width(), self.height()
image_width = self.pix_map.size().width()
image_height = self.pix_map.size().height()
ratio = min(width, height) / max(image_width, image_height)
new_image_width = image_width * ratio
new_image_height = image_height * ratio
rect = QRect((width - new_image_width) // 2,
(height - new_image_height) // 2, new_image_width,
new_image_height)
painter.drawPixmap(rect, self.pix_map)
class ScalingImage(QWidget):
"""Изображение, которое масштабируется вместе с родительским объектом,
сохраняя пропорции."""
def __init__(self, parent=None):
QWidget.__init__(self, parent=parent)
self.pix_map = QPixmap()
self.image_rect = QRect()
def setPixmap(self, pix_map):
"""Задать картинку."""
self.pix_map = pix_map
self.update()
def paintEvent(self, event):
"""Метод отвечает за отрисовку картинки."""
if not self.pix_map.isNull():
painter = QPainter(self)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
width, height = self.width(), self.height()
# Из-за бага в PyQt5 (как я понял) высота виджета определяется
# меньше действительной и изображение получается меньше. Чтобы
# исправить это, высота умножается на определённое число,
# вычисленное методом проб и ошибок
if width > height:
height *= 1.34
image_width = self.pix_map.size().width()
image_height = self.pix_map.size().height()
ratio = min(width, height) / max(image_width, image_height)
new_image_width = image_width * ratio
new_image_height = image_height * ratio
rect = QRect((width - new_image_width) // 2,
(self.height() - new_image_height) // 2,
new_image_width, new_image_height)
self.image_rect = rect
painter.drawPixmap(rect, self.pix_map)
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.Expanding, QSizePolicy.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 / 2.0)
height = self.current_pixmap_size.height()
extray = canvas_size.height() - height
if extray < 0:
extray = 0
y = int(extray / 2.0)
target = QRect(x, y, min(canvas_size.width(), width), min(canvas_size.height(), height))
p = QPainter(self)
p.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform)
p.drawPixmap(target, self.pixmap.scaled(target.size(), Qt.KeepAspectRatio, Qt.SmoothTransformation))
p.end()
def sizeHint(self):
return QSize(300, 400)
class ImageBox(QWidget):
def __init__(self):
super(ImageBox, self).__init__()
self.img = None
self.scaled_img = None
self.point = QPoint(0, 0)
self.start_pos = None
self.end_pos = None
self.left_click = False
self.scale = 1
self.SR_flag = False
def init_ui(self):
self.setWindowTitle("ImageBox")
def set_image(self, img_path):
"""
open image file
:param img_path: image file path
:return:
"""
self.img = QPixmap(img_path)
if self.SR_flag:
self.scaled_img = self.img.scaled(self.size(), Qt.KeepAspectRatio,
Qt.FastTransformation)
self.SR_flag = False
else:
self.scaled_img = self.img.scaled(self.img.size(),
Qt.KeepAspectRatio,
Qt.FastTransformation)
def paintEvent(self, e):
if self.scaled_img:
painter = QPainter()
painter.begin(self)
painter.scale(self.scale, self.scale)
painter.drawPixmap(self.point, self.scaled_img)
painter.end()
def mouseMoveEvent(self, e):
if self.left_click:
self.end_pos = e.pos() - self.start_pos
self.point = self.point + self.end_pos
self.start_pos = e.pos()
self.repaint()
def mousePressEvent(self, e):
if e.button() == Qt.LeftButton:
self.left_click = True
self.start_pos = e.pos()
def mouseReleaseEvent(self, e):
if e.button() == Qt.LeftButton:
self.left_click = False
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)
def paint(self, painter, option, index):
if not self.parent().indexWidget(index):
# 创建控件
widget = QLabel(self.parent())
widget.resize(self.sizeCache)
layout = QHBoxLayout()
widget.setLayout(layout)
widget.setObjectName("QTableViewDelegate")
# 创建缩略图
path = index.data()
pixmap = QPixmap(path)
lbl = QLabel(widget)
lbl.resize(pixmap.size())
lbl.setPixmap(pixmap)
# 将缩略图标签加入到控件中（为了居中...使用了两层控件）
layout.addWidget(lbl)
# 设置控件
self.parent().setIndexWidget(index, widget)
class ProjectThumbnail(QWidget):
def __init__(self):
super().__init__()
self._pixmap = None
self._setup_ui()
def _setup_ui(self):
self._pixmap = QPixmap('')
self.setFixedSize(self._pixmap.size())
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.drawPixmap(0, 0, self._pixmap)
painter.fillRect(self.rect(), self.palette().midlight().color())
round_path = QPainterPath()
round_path.addRoundedRect(0, 0, self.width(), self.height(), 5, 5)
sq_path = QPainterPath()
sq_path.addRect(0, 0, 10, self.height())
draw_path = sq_path - round_path
painter.setPen(Qt.NoPen)
painter.setBrush(self.palette().dark().color())
painter.drawPath(draw_path)
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.IgnoreAspectRatio, Qt.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.Antialiasing
| QPainter.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()
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.IgnoreAspectRatio,
Qt.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.Antialiasing | QPainter.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()
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(nw, nh, Qt.IgnoreAspectRatio,
Qt.SmoothTransformation)
w, h = pmap.width(), pmap.height()
x = int(abs(cw - w) / 2.)
y = int(abs(ch - h) / 2.)
target = QRect(x, y, w, h)
p = QPainter(self)
p.setRenderHints(QPainter.Antialiasing
| QPainter.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:
sztgt = target.adjusted(0, 0, 0, -4)
f = p.font()
f.setBold(True)
p.setFont(f)
sz = u'\u00a0%d x %d\u00a0' % (ow, oh)
flags = Qt.AlignBottom | Qt.AlignRight | Qt.TextSingleLine
szrect = p.boundingRect(sztgt, flags, sz)
p.fillRect(szrect.adjusted(0, 0, 0, 4), QColor(0, 0, 0, 200))
p.setPen(QPen(QColor(255, 255, 255)))
p.drawText(sztgt, flags, sz)
p.end()
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(nw, nh, Qt.IgnoreAspectRatio,
Qt.SmoothTransformation)
w, h = pmap.width(), pmap.height()
x = int(abs(cw - w)/2.)
y = int(abs(ch - h)/2.)
target = QRect(x, y, w, h)
p = QPainter(self)
p.setRenderHints(QPainter.Antialiasing | QPainter.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:
sztgt = target.adjusted(0, 0, 0, -4)
f = p.font()
f.setBold(True)
p.setFont(f)
sz = u'\u00a0%d x %d\u00a0'%(ow, oh)
flags = Qt.AlignBottom|Qt.AlignRight|Qt.TextSingleLine
szrect = p.boundingRect(sztgt, flags, sz)
p.fillRect(szrect.adjusted(0, 0, 0, 4), QColor(0, 0, 0, 200))
p.setPen(QPen(QColor(255,255,255)))
p.drawText(sztgt, flags, sz)
p.end()
