本文整理汇总了Python中PyQt4.Qt.QImage.load方法的典型用法代码示例。如果您正苦于以下问题：Python QImage.load方法的具体用法？Python QImage.load怎么用？Python QImage.load使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt4.Qt.QImage的用法示例。
在下文中一共展示了QImage.load方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _populate_covers
# 需要导入模块: from PyQt4.Qt import QImage [as 别名]
# 或者: from PyQt4.Qt.QImage import load [as 别名]
def _populate_covers(self):
'''
Display calibre cover for both unless mismatch
'''
def _fetch_marvin_cover(border_width=0):
'''
Retrieve LargeCoverJpg from cache
'''
#self._log_location('border_width: {0}'.format(border_width))
con = sqlite3.connect(self.marvin_db_path)
with con:
con.row_factory = sqlite3.Row
# Fetch Hash from mainDb
cover_cur = con.cursor()
cover_cur.execute('''SELECT
Hash
FROM Books
WHERE ID = '{0}'
'''.format(self.book_id))
row = cover_cur.fetchone()
book_hash = row[b'Hash']
large_covers_subpath = self.connected_device._cover_subpath(size="large")
cover_path = '/'.join([large_covers_subpath, '%s.jpg' % book_hash])
stats = self.parent.ios.exists(cover_path)
if stats:
self._log("fetching large cover from cache")
#self._log("cover size: {:,} bytes".format(int(stats['st_size'])))
cover_bytes = self.parent.ios.read(cover_path, mode='rb')
m_image = QImage()
m_image.loadFromData(cover_bytes)
if border_width:
# Construct a QPixmap with oversized yellow background
m_image = m_image.scaledToHeight(
self.COVER_ICON_SIZE - border_width * 2,
Qt.SmoothTransformation)
self.m_pixmap = QPixmap(
QSize(m_image.width() + border_width * 2,
m_image.height() + border_width * 2))
m_painter = QPainter(self.m_pixmap)
m_painter.setRenderHints(m_painter.Antialiasing)
m_painter.fillRect(self.m_pixmap.rect(), self.MISMATCH_COLOR)
m_painter.drawImage(border_width,
border_width,
m_image)
else:
m_image = m_image.scaledToHeight(
self.COVER_ICON_SIZE,
Qt.SmoothTransformation)
self.m_pixmap = QPixmap(
QSize(m_image.width(),
m_image.height()))
m_painter = QPainter(self.m_pixmap)
m_painter.setRenderHints(m_painter.Antialiasing)
m_painter.drawImage(0, 0, m_image)
self.marvin_cover.setPixmap(self.m_pixmap)
else:
# No cover available, use generic
self._log("No cached cover, using generic")
pixmap = QPixmap()
pixmap.load(I('book.png'))
pixmap = pixmap.scaled(self.COVER_ICON_SIZE,
self.COVER_ICON_SIZE,
aspectRatioMode=Qt.KeepAspectRatio,
transformMode=Qt.SmoothTransformation)
self.marvin_cover.setPixmap(pixmap)
self.calibre_cover.setMaximumSize(QSize(self.COVER_ICON_SIZE, self.COVER_ICON_SIZE))
self.calibre_cover.setText('')
self.calibre_cover.setScaledContents(False)
self.marvin_cover.setMaximumSize(QSize(self.COVER_ICON_SIZE, self.COVER_ICON_SIZE))
self.marvin_cover.setText('')
self.marvin_cover.setScaledContents(False)
if self.cid:
db = self.opts.gui.current_db
if 'cover_hash' not in self.mismatches:
mi = db.get_metadata(self.cid, index_is_id=True, get_cover=True, cover_as_data=True)
c_image = QImage()
if mi.has_cover:
c_image.loadFromData(mi.cover_data[1])
c_image = c_image.scaledToHeight(self.COVER_ICON_SIZE,
Qt.SmoothTransformation)
self.c_pixmap = QPixmap(QSize(c_image.width(),
c_image.height()))
c_painter = QPainter(self.c_pixmap)
c_painter.setRenderHints(c_painter.Antialiasing)
c_painter.drawImage(0, 0, c_image)
else:
#.........这里部分代码省略.........
示例2: Slideshow
# 需要导入模块: from PyQt4.Qt import QImage [as 别名]
# 或者: from PyQt4.Qt.QImage import load [as 别名]
class Slideshow(Slide):
'''
basic slideshow class for FabLabInfo
'''
imgList = list()
def __init__(self, parent = None):
'''
Constructor
'''
super(Slideshow, self).__init__(parent)
#self.setStyleSheet("background: #000;")
self.imageLabel = QLabel()
self.imageLabel.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)
self.imageLabel.setParent(self)
self.validityChecker = QImage()
self.slideIterator = 0
self.interval = 1
self.timer.timeout.connect(self.nextImage)
self.fileList = list()
self.currIndex = 0
self.layout = QHBoxLayout()
self.layout.setMargin(0)
self.layout.addWidget(self.imageLabel)
self.layout.setAlignment(self.imageLabel, Qt.AlignHCenter)
self.setLayout(self.layout)
def setup(self, imgFolder, interval=10, cacheSize=10):
''' setup the slide for it's display routine '''
self.interval = interval
self.cacheSize = cacheSize
self.fileList = glob(imgFolder + "/*.jpg")
while len(self.imgList) < self.cacheSize:
if self.validityChecker.load(self.fileList[self.currIndex%len(self.fileList)]):
self.imgList.append(self.validityChecker)
print("Image file found - caching it")
self.currIndex += 1
def run(self):
''' run the widgets display routine '''
self.timer.start(self.interval*1000)
self.nextImage()
def nextImage(self):
''' take image from list and scale it
to height of parent widget
(which should be QMainWindow).
Then generate a pixmap from the scaled
image and display it on a QLabel'''
image = self.imgList[(self.currIndex+1)%len(self.imgList)]
currImage = QPixmap.fromImage(image.scaledToHeight(self.parentWidget().height(), Qt.SmoothTransformation))
self.imageLabel.setPixmap(currImage)
if self.validityChecker.load(self.fileList[self.currIndex%len(self.fileList)]):
self.imgList[self.currIndex%len(self.imgList)] = self.validityChecker
print("Preloading next image")
self.currIndex += 1
def stop(self):
Slide.stop(self)
self.timer.stop()
self.currIndex=0
def shutdown(self):
qWarning("Shutting down Slideshow-Module, this will purge all loaded images! \nTo pause, use stop() instead")
Slide.shutdown(self)
self.timer.stop()
self.imgList.clear()
self.fileList.clear()
self.currIndex=0