Python QFileInfo.baseName方法代码示例

# 需要导入模块: from PyQt5.QtCore import QFileInfo [as 别名]
# 或者: from PyQt5.QtCore.QFileInfo import baseName [as 别名]
    def saveImage(self):
        """ Provides a dialog window to allow the user to save the image file.
        """
        imageFile, _ = QFileDialog.getSaveFileName(self,
                "Choose a filename to save the image", "", "Images (*.png)")

        info = QFileInfo(imageFile)

        if info.baseName() != '':
            newImageFile = QFileInfo(info.absoluteDir(),
                    info.baseName() + '.png').absoluteFilePath()

            if not self.finalWidget.pixmap().save(newImageFile, 'PNG'):
                QMessageBox.warning(self, "Cannot save file",
                        "The file could not be saved.",
                        QMessageBox.Cancel, QMessageBox.NoButton,
                        QMessageBox.NoButton)
        else:
            QMessageBox.warning(self, "Cannot save file",
                    "Please enter a valid filename.", QMessageBox.Cancel,
                    QMessageBox.NoButton, QMessageBox.NoButton)

# 需要导入模块: from PyQt5.QtCore import QFileInfo [as 别名]
# 或者: from PyQt5.QtCore.QFileInfo import baseName [as 别名]
 def browsePath(self):
     """用户点击了浏览路径的按钮。如果成功设置了路径，就返回True，如果用户取消了操作或者出错，就返回False
     返回的用途参见showEvent()"""
     filename, selectedFilter = QFileDialog.getOpenFileName(self, self.windowTitle())
     if not filename:
         return False
     fi = QFileInfo(filename)
     if fi.isSymLink():
         filename = fi.symLinkTarget()
         if not os.path.exists(filename):
             QMessageBox.information(self, self.windowTitle(), self.tr("快捷方式所指向的程序不正确。"))
             return False
     fi = QFileInfo(filename)
     self.txtName.setText(fi.baseName())
     self.txtPath.setText(fi.absoluteFilePath())
     self.setFileIcon(fi.absoluteFilePath())
     self.txtDir.setText(fi.dir().absolutePath())
     return True

# 需要导入模块: from PyQt5.QtCore import QFileInfo [as 别名]
# 或者: from PyQt5.QtCore.QFileInfo import baseName [as 别名]
    def replaceImage(self, filepath, title):
        self.title = title
        self.filepath = filepath

         # set custom properties
        self.setCustomProperty("title", title)
        self.setCustomProperty("filepath", self.filepath)
        self.setName(title)

        fileInfo = QFileInfo(filepath)
        ext = fileInfo.suffix()
        if ext == "pdf":
            s = QSettings()
            oldValidation = s.value("/Projections/defaultBehavior")
            s.setValue("/Projections/defaultBehavior", "useGlobal")  # for not asking about crs
            path = fileInfo.filePath()
            baseName = fileInfo.baseName()
            layer = QgsRasterLayer(path, baseName)
            self.image = layer.previewAsImage(QSize(layer.width(), layer.height()))
            s.setValue("/Projections/defaultBehavior", oldValidation)
        else:
            reader = QImageReader(filepath)
            self.image = reader.read()
        self.repaint()

# 需要导入模块: from PyQt5.QtCore import QFileInfo [as 别名]
# 或者: from PyQt5.QtCore.QFileInfo import baseName [as 别名]
    def initializeLayer(self, screenExtent=None):
        if self.error or self.initialized or self.initializing:
            return

        if self.filepath is not None:
            # not safe...
            self.initializing = True
            filepath = self.getAbsoluteFilepath()

            if not os.path.exists(filepath):
                # TODO integrate with BadLayerHandler ?
                loadErrorDialog = LoadErrorDialog(filepath)
                result = loadErrorDialog.exec_()
                if result == 1:
                    # absolute
                    filepath = loadErrorDialog.lineEditImagePath.text()
                    # to relative if needed
                    self.filepath = utils.toRelativeToQGS(filepath)
                    self.setCustomProperty("filepath", self.filepath)
                    QgsProject.instance().setDirty(True)
                else:
                    self.error = True

                del loadErrorDialog

            fileInfo = QFileInfo(filepath)
            ext = fileInfo.suffix()
            if ext == "pdf":
                s = QSettings()
                oldValidation = s.value("/Projections/defaultBehavior")
                s.setValue("/Projections/defaultBehavior", "useGlobal") # for not asking about crs
                path = fileInfo.filePath()
                baseName = fileInfo.baseName()
                layer = QgsRasterLayer(path, baseName)
                self.image = layer.previewAsImage(QSize(layer.width(),layer.height()))
                s.setValue("/Projections/defaultBehavior", oldValidation)
            else:
                reader = QImageReader(filepath)
                self.image = reader.read()

            self.initialized = True
            self.initializing = False

            self.setupCrs()

            if screenExtent:
                # constructor called from AddLayer action
                # if not, layer loaded from QGS project file

                # check if image already has georef info
                # use GDAL
                dataset = gdal.Open(filepath, gdal.GA_ReadOnly)
                georef = None
                if dataset:
                    georef = dataset.GetGeoTransform()

                if georef and not self.is_default_geotransform(georef):
                    self.initializeExistingGeoreferencing(dataset, georef)
                else:
                    # init to default params
                    self.setCenter(screenExtent.center())
                    self.setRotation(0.0)

                    sw = screenExtent.width()
                    sh = screenExtent.height()

                    self.resetScale(sw, sh)

                    self.commitTransformParameters()