class PreviewBrowser(QWidget):
"""A Preview Browser for recent/premade scheme selection.
"""
# Emitted when the current previewed item changes
currentIndexChanged = Signal(int)
# Emitted when an item is double clicked in the preview list.
activated = Signal(int)
def __init__(self, *args):
QWidget.__init__(self, *args)
self.__model = None
self.__currentIndex = -1
self.__template = DESCRIPTION_TEMPLATE
self.__setupUi()
def __setupUi(self):
vlayout = QVBoxLayout()
vlayout.setContentsMargins(0, 0, 0, 0)
top_layout = QHBoxLayout()
top_layout.setContentsMargins(12, 12, 12, 12)
# Top row with full text description and a large preview
# image.
self.__label = QLabel(
self,
objectName="description-label",
wordWrap=True,
alignment=Qt.AlignTop | Qt.AlignLeft,
)
self.__label.setWordWrap(True)
self.__label.setFixedSize(220, PREVIEW_SIZE[1])
self.__image = QSvgWidget(self, objectName="preview-image")
self.__image.setFixedSize(*PREVIEW_SIZE)
self.__imageFrame = DropShadowFrame(self)
self.__imageFrame.setWidget(self.__image)
# Path text below the description and image
path_layout = QHBoxLayout()
path_layout.setContentsMargins(12, 0, 12, 0)
path_label = QLabel("<b>{0!s}</b>".format(self.tr("Path:")),
self,
objectName="path-label")
self.__path = TextLabel(self, objectName="path-text")
path_layout.addWidget(path_label)
path_layout.addWidget(self.__path)
self.__selectAction = QAction(self.tr("Select"),
self,
objectName="select-action")
top_layout.addWidget(self.__label,
1,
alignment=Qt.AlignTop | Qt.AlignLeft)
top_layout.addWidget(self.__image,
1,
alignment=Qt.AlignTop | Qt.AlignRight)
vlayout.addLayout(top_layout)
vlayout.addLayout(path_layout)
# An list view with small preview icons.
self.__previewList = LinearIconView(objectName="preview-list-view")
self.__previewList.doubleClicked.connect(self.__onDoubleClicked)
vlayout.addWidget(self.__previewList)
self.setLayout(vlayout)
def setModel(self, model):
"""Set the item model for preview.
"""
if self.__model != model:
if self.__model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.disconnect(self.__onSelectionChanged)
self.__model.dataChanged.disconnect(self.__onDataChanged)
self.__model = model
self.__previewList.setModel(model)
if model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.connect(self.__onSelectionChanged)
self.__model.dataChanged.connect(self.__onDataChanged)
if model and model.rowCount():
self.setCurrentIndex(0)
def model(self):
"""Return the item model.
"""
return self.__model
def setPreviewDelegate(self, delegate):
"""Set the delegate to render the preview images.
"""
raise NotImplementedError
def setDescriptionTemplate(self, template):
self.__template = template
self.__update()
def setCurrentIndex(self, index):
"""Set the selected preview item index.
"""
if self.__model is not None and self.__model.rowCount():
index = min(index, self.__model.rowCount() - 1)
index = self.__model.index(index, 0)
sel_model = self.__previewList.selectionModel()
# This emits selectionChanged signal and triggers
# __onSelectionChanged, currentIndex is updated there.
sel_model.select(index, sel_model.ClearAndSelect)
elif self.__currentIndex != -1:
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(-1)
def currentIndex(self):
"""Return the current selected index.
"""
return self.__currentIndex
def __onSelectionChanged(self, *args):
"""Selected item in the preview list has changed.
Set the new description and large preview image.
"""
rows = self.__previewList.selectedIndexes()
if rows:
index = rows[0]
self.__currentIndex = index.row()
else:
index = QModelIndex()
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(self.__currentIndex)
def __onDataChanged(self, topleft, bottomRight):
"""Data changed, update the preview if current index in the changed
range.
"""
if (self.__currentIndex <= topleft.row()
and self.__currentIndex >= bottomRight.row()):
self.__update()
def __onDoubleClicked(self, index):
"""Double click on an item in the preview item list.
"""
self.activated.emit(index.row())
def __update(self):
"""Update the current description.
"""
if self.__currentIndex != -1:
index = self.model().index(self.__currentIndex, 0)
else:
index = QModelIndex()
if not index.isValid():
description = ""
name = ""
path = ""
svg = NO_PREVIEW_SVG
else:
description = str(index.data(Qt.WhatsThisRole))
if not description:
description = "No description."
description = escape(description)
description = description.replace("\n", "<br/>")
name = str(index.data(Qt.DisplayRole))
if not name:
name = "Untitled"
name = escape(name)
path = str(index.data(Qt.StatusTipRole))
svg = str(index.data(previewmodel.ThumbnailSVGRole))
desc_text = self.__template.format(description=description, name=name)
self.__label.setText(desc_text)
self.__path.setText(path)
if not svg:
svg = NO_PREVIEW_SVG
if svg:
self.__image.load(QByteArray(svg.encode("utf-8")))
class PreviewBrowser(QWidget):
"""
A Preview Browser for recent/example workflow selection.
"""
# Emitted when the current previewed item changes
currentIndexChanged = Signal(int)
# Emitted when an item is double clicked in the preview list.
activated = Signal(int)
def __init__(self, *args, heading="", previewMargins=12, **kwargs):
# type: (Any, str, int, Any) -> None
super().__init__(*args, **kwargs)
self.__model = None # type: Optional[QAbstractItemModel]
self.__currentIndex = -1
self.__template = DESCRIPTION_TEMPLATE
self.__margin = previewMargins
vlayout = QVBoxLayout()
vlayout.setContentsMargins(0, 0, 0, 0)
top_layout = QVBoxLayout(objectName="top-layout")
margin = self.__margin
top_layout.setContentsMargins(margin, margin, margin, margin)
# Optional heading label
self.__heading = QLabel(self, objectName="heading", visible=False)
# Horizontal row with full text description and a large preview
# image.
hlayout = QHBoxLayout()
hlayout.setContentsMargins(0, 0, 0, 0)
self.__label = QLabel(self,
objectName="description-label",
wordWrap=True,
alignment=Qt.AlignTop | Qt.AlignLeft)
self.__label.setWordWrap(True)
self.__label.setFixedSize(220, PREVIEW_SIZE[1])
self.__label.setMinimumWidth(PREVIEW_SIZE[0] // 2)
self.__label.setMaximumHeight(PREVIEW_SIZE[1])
self.__image = QSvgWidget(self, objectName="preview-image")
self.__image.setFixedSize(*PREVIEW_SIZE)
self.__imageFrame = DropShadowFrame(self)
self.__imageFrame.setWidget(self.__image)
hlayout.addWidget(self.__label)
hlayout.addWidget(self.__image)
# Path text below the description and image
path_layout = QHBoxLayout()
path_layout.setContentsMargins(0, 0, 0, 0)
path_label = QLabel("<b>{0!s}</b>".format(self.tr("Path:")),
self,
objectName="path-label")
self.__path = TextLabel(self, objectName="path-text")
path_layout.addWidget(path_label)
path_layout.addWidget(self.__path)
top_layout.addWidget(self.__heading)
top_layout.addLayout(hlayout)
top_layout.addLayout(path_layout)
vlayout.addLayout(top_layout)
# An list view with small preview icons.
self.__previewList = LinearIconView(objectName="preview-list-view",
wordWrap=True)
self.__previewList.doubleClicked.connect(self.__onDoubleClicked)
vlayout.addWidget(self.__previewList)
self.setLayout(vlayout)
self.setHeading(heading)
def setHeading(self, text):
# type: (str) -> None
"""
Set the heading text.
Parameters
----------
text: str
The new heading text. If empty the heading is hidden.
"""
self.__heading.setVisible(bool(text))
self.__heading.setText(text)
def setPreviewMargins(self, margin):
# type: (int) -> None
"""
Set the left, top and right margins of the top widget part (heading
and description)
Parameters
----------
margin : int
Margin
"""
if margin != self.__margin:
layout = self.layout().itemAt(0).layout()
assert isinstance(layout, QVBoxLayout)
assert layout.objectName() == "top-layout"
layout.setContentsMargins(margin, margin, margin, 0)
def setModel(self, model):
# type: (QAbstractItemModel) -> None
"""
Set the item model for preview.
Parameters
----------
model : QAbstractItemModel
"""
if self.__model != model:
if self.__model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.disconnect(self.__onSelectionChanged)
self.__model.dataChanged.disconnect(self.__onDataChanged)
self.__model = model
self.__previewList.setModel(model)
if model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.connect(self.__onSelectionChanged)
self.__model.dataChanged.connect(self.__onDataChanged)
if model and model.rowCount():
self.setCurrentIndex(0)
def model(self):
# type: () -> Optional[QAbstractItemModel]
"""
Return the item model.
"""
return self.__model
def setDescriptionTemplate(self, template):
self.__template = template
self.__update()
def setCurrentIndex(self, index):
# type: (int) -> None
"""
Set the selected preview item index.
Parameters
----------
index : int
The current selected index.
"""
if self.__model is not None and self.__model.rowCount():
index = min(index, self.__model.rowCount() - 1)
index = self.__model.index(index, 0)
sel_model = self.__previewList.selectionModel()
# This emits selectionChanged signal and triggers
# __onSelectionChanged, currentIndex is updated there.
sel_model.select(index, sel_model.ClearAndSelect)
elif self.__currentIndex != -1:
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(-1)
def currentIndex(self): # type: () -> int
"""
Return the current selected index.
"""
return self.__currentIndex
def __onSelectionChanged(self):
# type: () -> None
"""Selected item in the preview list has changed.
Set the new description and large preview image.
"""
rows = self.__previewList.selectedIndexes()
if rows:
index = rows[0]
self.__currentIndex = index.row()
else:
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(self.__currentIndex)
def __onDataChanged(self, topLeft, bottomRight):
# type: (QModelIndex, QModelIndex) -> None
"""Data changed, update the preview if current index in the changed
range.
"""
if topLeft.row() <= self.__currentIndex <= bottomRight.row():
self.__update()
def __onDoubleClicked(self, index):
# type: (QModelIndex) -> None
"""Double click on an item in the preview item list.
"""
self.activated.emit(index.row())
def __update(self):
# type: () -> None
"""Update the current description.
"""
if self.__currentIndex != -1 and self.__model is not None:
index = self.__model.index(self.__currentIndex, 0)
else:
index = QModelIndex()
if not index.isValid():
description = ""
name = ""
path = ""
svg = NO_PREVIEW_SVG
else:
description = index.data(Qt.WhatsThisRole)
if description:
description = description
else:
description = "没有说明。"
description = escape(description)
description = description.replace("\n", "<br/>")
name = index.data(Qt.DisplayRole)
if name:
name = name
else:
name = "Untitled"
name = escape(name)
path = str(index.data(Qt.StatusTipRole))
svg = str(index.data(previewmodel.ThumbnailSVGRole))
desc_text = self.__template.format(description=description, name=name)
self.__label.setText(desc_text)
self.__path.setText(contractuser(path))
if not svg:
svg = NO_PREVIEW_SVG
if svg:
self.__image.load(QByteArray(svg.encode("utf-8")))
class PreviewBrowser(QWidget):
"""A Preview Browser for recent/premade scheme selection.
"""
# Emitted when the current previewed item changes
currentIndexChanged = Signal(int)
# Emitted when an item is double clicked in the preview list.
activated = Signal(int)
def __init__(self, *args, heading="", previewMargins=12, **kwargs):
super().__init__(*args)
self.__model = None
self.__currentIndex = -1
self.__template = DESCRIPTION_TEMPLATE
self.__margin = previewMargins
self.__setupUi()
self.setHeading(heading)
def __setupUi(self):
vlayout = QVBoxLayout()
vlayout.setContentsMargins(0, 0, 0, 0)
top_layout = QVBoxLayout(objectName="top-layout")
margin = self.__margin
top_layout.setContentsMargins(margin, margin, margin, margin)
# Optional heading label
self.__heading = QLabel(
self, objectName="heading", visible=False
)
# Horizontal row with full text description and a large preview
# image.
hlayout = QHBoxLayout()
hlayout.setContentsMargins(0, 0, 0, 0)
self.__label = QLabel(
self, objectName="description-label",
wordWrap=True, alignment=Qt.AlignTop | Qt.AlignLeft
)
self.__label.setWordWrap(True)
self.__label.setFixedSize(220, PREVIEW_SIZE[1])
self.__label.setMinimumWidth(PREVIEW_SIZE[0] // 2)
self.__label.setMaximumHeight(PREVIEW_SIZE[1])
self.__image = QSvgWidget(self, objectName="preview-image")
self.__image.setFixedSize(*PREVIEW_SIZE)
self.__imageFrame = DropShadowFrame(self)
self.__imageFrame.setWidget(self.__image)
hlayout.addWidget(self.__label)
hlayout.addWidget(self.__image)
# Path text below the description and image
path_layout = QHBoxLayout()
path_layout.setContentsMargins(0, 0, 0, 0)
path_label = QLabel("<b>{0!s}</b>".format(self.tr("Path:")), self,
objectName="path-label")
self.__path = TextLabel(self, objectName="path-text")
path_layout.addWidget(path_label)
path_layout.addWidget(self.__path)
top_layout.addWidget(self.__heading)
top_layout.addLayout(hlayout)
top_layout.addLayout(path_layout)
vlayout.addLayout(top_layout)
# An list view with small preview icons.
self.__previewList = LinearIconView(
objectName="preview-list-view",
wordWrap=True
)
self.__previewList.doubleClicked.connect(self.__onDoubleClicked)
vlayout.addWidget(self.__previewList)
self.setLayout(vlayout)
def setHeading(self, text):
self.__heading.setVisible(bool(text))
self.__heading.setText(text)
def setPreviewMargins(self, margin):
# type: (int) -> None
"""
Set the left, top and right margins of the top widget part (heading
and description)
Parameters
----------
margin : int
Margin
"""
if margin != self.__margin:
layout = self.layout().itemAt(0).layout()
assert isinstance(layout, QVBoxLayout)
assert layout.objectName() == "top-layout"
layout.setContentsMargins(margin, margin, margin, 0)
def setModel(self, model):
"""Set the item model for preview.
"""
if self.__model != model:
if self.__model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.disconnect(self.__onSelectionChanged)
self.__model.dataChanged.disconnect(self.__onDataChanged)
self.__model = model
self.__previewList.setModel(model)
if model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.connect(self.__onSelectionChanged)
self.__model.dataChanged.connect(self.__onDataChanged)
if model and model.rowCount():
self.setCurrentIndex(0)
def model(self):
"""Return the item model.
"""
return self.__model
def setPreviewDelegate(self, delegate):
"""Set the delegate to render the preview images.
"""
raise NotImplementedError
def setDescriptionTemplate(self, template):
self.__template = template
self.__update()
def setCurrentIndex(self, index):
"""Set the selected preview item index.
"""
if self.__model is not None and self.__model.rowCount():
index = min(index, self.__model.rowCount() - 1)
index = self.__model.index(index, 0)
sel_model = self.__previewList.selectionModel()
# This emits selectionChanged signal and triggers
# __onSelectionChanged, currentIndex is updated there.
sel_model.select(index, sel_model.ClearAndSelect)
elif self.__currentIndex != -1:
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(-1)
def currentIndex(self):
"""Return the current selected index.
"""
return self.__currentIndex
def __onSelectionChanged(self, *args):
"""Selected item in the preview list has changed.
Set the new description and large preview image.
"""
rows = self.__previewList.selectedIndexes()
if rows:
index = rows[0]
self.__currentIndex = index.row()
else:
index = QModelIndex()
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(self.__currentIndex)
def __onDataChanged(self, topleft, bottomRight):
"""Data changed, update the preview if current index in the changed
range.
"""
if self.__currentIndex <= topleft.row() and \
self.__currentIndex >= bottomRight.row():
self.__update()
def __onDoubleClicked(self, index):
"""Double click on an item in the preview item list.
"""
self.activated.emit(index.row())
def __update(self):
"""Update the current description.
"""
if self.__currentIndex != -1:
index = self.model().index(self.__currentIndex, 0)
else:
index = QModelIndex()
if not index.isValid():
description = ""
name = ""
path = ""
svg = NO_PREVIEW_SVG
else:
description = index.data(Qt.WhatsThisRole)
if description:
description = description
else:
description = "No description."
description = escape(description)
description = description.replace("\n", "<br/>")
name = index.data(Qt.DisplayRole)
if name:
name = name
else:
name = "Untitled"
name = escape(name)
path = str(index.data(Qt.StatusTipRole))
svg = str(index.data(previewmodel.ThumbnailSVGRole))
desc_text = self.__template.format(description=description, name=name)
self.__label.setText(desc_text)
self.__path.setText(contractuser(path))
if not svg:
svg = NO_PREVIEW_SVG
if svg:
self.__image.load(QByteArray(svg.encode("utf-8")))
class PreviewBrowser(QWidget):
"""A Preview Browser for recent/premade scheme selection.
"""
# Emitted when the current previewed item changes
currentIndexChanged = Signal(int)
# Emitted when an item is double clicked in the preview list.
activated = Signal(int)
def __init__(self, *args):
QWidget.__init__(self, *args)
self.__model = None
self.__currentIndex = -1
self.__template = DESCRIPTION_TEMPLATE
self.__setupUi()
def __setupUi(self):
vlayout = QVBoxLayout()
vlayout.setContentsMargins(0, 0, 0, 0)
top_layout = QHBoxLayout()
top_layout.setContentsMargins(12, 12, 12, 12)
# Top row with full text description and a large preview
# image.
self.__label = QLabel(self, objectName="description-label",
wordWrap=True,
alignment=Qt.AlignTop | Qt.AlignLeft)
self.__label.setWordWrap(True)
self.__label.setFixedSize(220, PREVIEW_SIZE[1])
self.__image = QSvgWidget(self, objectName="preview-image")
self.__image.setFixedSize(*PREVIEW_SIZE)
self.__imageFrame = DropShadowFrame(self)
self.__imageFrame.setWidget(self.__image)
# Path text below the description and image
path_layout = QHBoxLayout()
path_layout.setContentsMargins(12, 0, 12, 0)
path_label = QLabel("<b>{0!s}</b>".format(self.tr("Path:")), self,
objectName="path-label")
self.__path = TextLabel(self, objectName="path-text")
path_layout.addWidget(path_label)
path_layout.addWidget(self.__path)
self.__selectAction = \
QAction(self.tr("Select"), self,
objectName="select-action",
)
top_layout.addWidget(self.__label, 1,
alignment=Qt.AlignTop | Qt.AlignLeft)
top_layout.addWidget(self.__image, 1,
alignment=Qt.AlignTop | Qt.AlignRight)
vlayout.addLayout(top_layout)
vlayout.addLayout(path_layout)
# An list view with small preview icons.
self.__previewList = LinearIconView(objectName="preview-list-view")
self.__previewList.doubleClicked.connect(self.__onDoubleClicked)
vlayout.addWidget(self.__previewList)
self.setLayout(vlayout)
def setModel(self, model):
"""Set the item model for preview.
"""
if self.__model != model:
if self.__model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.disconnect(self.__onSelectionChanged)
self.__model.dataChanged.disconnect(self.__onDataChanged)
self.__model = model
self.__previewList.setModel(model)
if model:
s_model = self.__previewList.selectionModel()
s_model.selectionChanged.connect(self.__onSelectionChanged)
self.__model.dataChanged.connect(self.__onDataChanged)
if model and model.rowCount():
self.setCurrentIndex(0)
def model(self):
"""Return the item model.
"""
return self.__model
def setPreviewDelegate(self, delegate):
"""Set the delegate to render the preview images.
"""
raise NotImplementedError
def setDescriptionTemplate(self, template):
self.__template = template
self.__update()
def setCurrentIndex(self, index):
"""Set the selected preview item index.
"""
if self.__model is not None and self.__model.rowCount():
index = min(index, self.__model.rowCount() - 1)
index = self.__model.index(index, 0)
sel_model = self.__previewList.selectionModel()
# This emits selectionChanged signal and triggers
# __onSelectionChanged, currentIndex is updated there.
sel_model.select(index, sel_model.ClearAndSelect)
elif self.__currentIndex != -1:
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(-1)
def currentIndex(self):
"""Return the current selected index.
"""
return self.__currentIndex
def __onSelectionChanged(self, *args):
"""Selected item in the preview list has changed.
Set the new description and large preview image.
"""
rows = self.__previewList.selectedIndexes()
if rows:
index = rows[0]
self.__currentIndex = index.row()
else:
index = QModelIndex()
self.__currentIndex = -1
self.__update()
self.currentIndexChanged.emit(self.__currentIndex)
def __onDataChanged(self, topleft, bottomRight):
"""Data changed, update the preview if current index in the changed
range.
"""
if self.__currentIndex <= topleft.row() and \
self.__currentIndex >= bottomRight.row():
self.__update()
def __onDoubleClicked(self, index):
"""Double click on an item in the preview item list.
"""
self.activated.emit(index.row())
def __update(self):
"""Update the current description.
"""
if self.__currentIndex != -1:
index = self.model().index(self.__currentIndex, 0)
else:
index = QModelIndex()
if not index.isValid():
description = ""
name = ""
path = ""
svg = NO_PREVIEW_SVG
else:
description = str(index.data(Qt.WhatsThisRole))
if not description:
description = "No description."
description = escape(description)
description = description.replace("\n", "<br/>")
name = str(index.data(Qt.DisplayRole))
if not name:
name = "Untitled"
name = escape(name)
path = str(index.data(Qt.StatusTipRole))
svg = str(index.data(previewmodel.ThumbnailSVGRole))
desc_text = self.__template.format(description=description, name=name)
self.__label.setText(desc_text)
self.__path.setText(path)
if not svg:
svg = NO_PREVIEW_SVG
if svg:
self.__image.load(QByteArray(svg.encode("utf-8")))
