def viewImage(self):
"""
display full size image in a new window
Unused yet
"""
from bLUe import loadImageFromFile
parent = window
newWin = QMainWindow(parent)
newWin.setAttribute(Qt.WA_DeleteOnClose)
newWin.setContextMenuPolicy(Qt.CustomContextMenu)
label = QLabel(parent=newWin)
label.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
label.img = None
newWin.setCentralWidget(label)
set_event_handlers(label)
sel = self.listWdg.selectedItems()
item = sel[0]
filename = item.data(Qt.UserRole)[0]
newWin.setWindowTitle(filename)
imImg = loadImageFromFile(filename, createsidecar=False)
label.img = imImg
newWin.showMaximized()
def playDiaporama(diaporamaGenerator, parent=None):
"""
Open a new window and play a slide show.
@param diaporamaGenerator: generator for file names
@type diaporamaGenerator: iterator object
@param parent:
@type parent:
"""
global isSuspended
isSuspended = False
# init diaporama window
newWin = QMainWindow(parent)
newWin.setAttribute(Qt.WA_DeleteOnClose)
newWin.setContextMenuPolicy(Qt.CustomContextMenu)
newWin.setWindowTitle(parent.tr('Slide show'))
label = QLabel()
label.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
label.img = None
newWin.setCentralWidget(label)
newWin.showFullScreen()
from bLUe import set_event_handlers
set_event_handlers(label)
# Pause key shortcut
actionEsc = QAction('Pause', None)
actionEsc.setShortcut(QKeySequence(Qt.Key_Escape))
newWin.addAction(actionEsc)
# context menu event handler
def contextMenuHandler(action):
global isSuspended
if action.text() == 'Pause':
isSuspended = True
# quit full screen mode
newWin.showMaximized()
elif action.text() == 'Full Screen':
if action.isChecked():
newWin.showFullScreen()
else:
newWin.showMaximized()
elif action.text() == 'Resume':
newWin.close()
isSuspended = False
playDiaporama(diaporamaGenerator, parent=window)
# rating : the tag is written into the .mie file; the file is
# created if needed.
elif action.text() in ['0', '1', '2', '3', '4', '5']:
with exiftool.ExifTool() as e:
e.writeXMPTag(name, 'XMP:rating', int(action.text()))
# connect shortkey action
actionEsc.triggered.connect(
lambda checked=False, name=actionEsc: contextMenuHandler(name)) # named arg checked is sent
# context menu
def contextMenu(position):
menu = QMenu()
actionEsc.setEnabled(not isSuspended)
action2 = QAction('Full Screen', None)
action2.setCheckable(True)
action2.setChecked(newWin.windowState() & Qt.WindowFullScreen)
action3 = QAction('Resume', None)
action3.setEnabled(isSuspended)
for action in [actionEsc, action2, action3]:
menu.addAction(action)
action.triggered.connect(
lambda checked=False, name=action: contextMenuHandler(name)) # named arg checked is sent
subMenuRating = menu.addMenu('Rating')
for i in range(6):
action = QAction(str(i), None)
subMenuRating.addAction(action)
action.triggered.connect(
lambda checked=False, name=action: contextMenuHandler(name)) # named arg checked is sent
menu.exec_(position)
# connect contextMenuRequested
newWin.customContextMenuRequested.connect(contextMenu)
newWin.setToolTip("Esc to exit full screen mode")
newWin.setWhatsThis(
""" <b>Slide Show</b><br>
The slide show cycles through the starting directory and its subfolders to display images.
Photos rated 0 or 1 star are not shown (by default, all photos are rated 5 stars).<br>
Hit the Esc key to <b>exit full screen mode and pause.</b><br> Use the Context Menu for <b>rating and resuming.</b>
The rating is saved in the .mie sidecar and the image file is not modified.
"""
) # end of setWhatsThis
# play diaporama
from bLUe import loadImageFromFile
window.modeDiaporama = True
while True:
if isSuspended:
newWin.setWindowTitle(newWin.windowTitle() + ' Paused')
break
try:
if not newWin.isVisible():
break
name = next(diaporamaGenerator)
# search rating in metadata
rating = 5 # default
with exiftool.ExifTool() as e:
try:
rt = e.readXMPTag(name, 'XMP:rating') # raise ValueError if sidecar not found
r = search("\d", rt)
if r is not None:
rating = int(r.group(0))
except ValueError:
rating = 5
# don't display image with low rating
if rating < 2:
app.processEvents()
imImg = loadImageFromFile(name, createsidecar=False)
# zoom might be modified by the mouse wheel : remember
if label.img is not None:
imImg.Zoom_coeff = label.img.Zoom_coeff
coeff = imImg.resize_coeff(label)
imImg.yOffset -= (imImg.height() * coeff - label.height()) / 2.0
imImg.xOffset -= (imImg.width() * coeff - label.width()) / 2.0
app.processEvents()
if isSuspended:
newWin.setWindowTitle(newWin.windowTitle() + ' Paused')
break
newWin.setWindowTitle(parent.tr('Slide show') + ' ' + name + ' ' + ' '.join(['*'] * imImg.meta.rating))
gc.collect()
label.img = imImg
label.repaint()
app.processEvents()
gc.collect()
sleep(2)
app.processEvents()
except StopIteration:
newWin.close()
window.diaporamaGenerator = None
break
except ValueError:
continue
except RuntimeError:
window.diaporamaGenerator = None
break
except:
window.diaporamaGenerator = None
window.modeDiaporama = False
raise
app.processEvents()
window.modeDiaporama = False
