Source code for camelot.view.controls.editors.imageeditor

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from fileeditor import FileEditor
from fileeditor import CustomEditor
from wideeditor import WideEditor

from camelot.view.art import Icon
from camelot.core.utils import ugettext_lazy as _
from camelot.view.controls.liteboxview import LiteBoxView
from camelot.view.model_thread import post
from camelot.view.action import ActionFactory

from PyQt4 import QtGui
from PyQt4 import QtCore
from PyQt4.QtCore import Qt

[docs]class ImageEditor(FileEditor, WideEditor): """Editor to view and edit image files, this is a customized implementation of a FileEditor""" filter = """Image files (*.bmp *.jpg *.jpeg *.mng *.png *.pbm *.pgm *.ppm *.tiff *.xbm *.xpm) All files (*)""" def __init__( self, parent=None, storage=None, preview_width=100, preview_height=100, field_name = 'image', **kwargs ): self.preview_width = preview_width self.preview_height = preview_height FileEditor.__init__( self, parent=parent, storage=storage, **kwargs ) self.setObjectName( field_name )
[docs] def setup_widget(self): layout = QtGui.QVBoxLayout() layout.setSpacing( 0 ) label_button_layout = QtGui.QHBoxLayout() label_button_layout.setMargin( 0 ) # # Setup label # self.label = QtGui.QLabel(self) self.label.installEventFilter(self) self.label.setAlignment( Qt.AlignHCenter|Qt.AlignVCenter ) label_button_layout.addWidget(self.label) # # Setup buttons # button_layout = QtGui.QVBoxLayout() button_layout.setSpacing( 0 ) button_layout.setContentsMargins( 0, 0, 0, 0) self.open_button = QtGui.QToolButton() self.open_button.setIcon(self.open_icon.getQIcon()) self.open_button.setAutoRaise(True) self.open_button.setToolTip(unicode(_('open image'))) self.open_button.clicked.connect(self.open_button_clicked) self.clear_button = QtGui.QToolButton() self.clear_button.setIcon(self.clear_icon.getQIcon()) self.clear_button.setToolTip(unicode(_('delete image'))) self.clear_button.setAutoRaise(True) self.clear_button.clicked.connect(self.clear_button_clicked) self.clear_button.setFocusPolicy(Qt.ClickFocus) copy_button = QtGui.QToolButton() copy_button.setDefaultAction( ActionFactory.copy(self, self.copy_to_clipboard ) ) copy_button.setAutoRaise(True) copy_button.setFocusPolicy(Qt.ClickFocus) paste_button = QtGui.QToolButton() paste_button.setDefaultAction( ActionFactory.paste(self, self.paste_from_clipboard ) ) paste_button.setAutoRaise(True) paste_button.setObjectName('paste') paste_button.setFocusPolicy(Qt.ClickFocus) button_layout.addStretch() button_layout.addWidget(self.open_button) button_layout.addWidget(self.clear_button) button_layout.addWidget(copy_button) button_layout.addWidget(paste_button) label_button_layout.addLayout(button_layout) label_button_layout.addStretch() layout.addLayout( label_button_layout ) layout.addStretch() self.setLayout( layout ) self.clear_image() QtGui.QApplication.clipboard().dataChanged.connect( self.clipboard_data_changed ) self.clipboard_data_changed()
@QtCore.pyqtSlot()
[docs] def clipboard_data_changed(self): paste_button = self.findChild(QtGui.QWidget, 'paste') if paste_button: mime_data = QtGui.QApplication.clipboard().mimeData() paste_button.setVisible( mime_data.hasImage() )
@QtCore.pyqtSlot()
[docs] def paste_from_clipboard(self): """Paste an image from the clipboard into the editor""" mime_data = QtGui.QApplication.clipboard().mimeData() if mime_data.hasImage(): byte_array = QtCore.QByteArray() buffer = QtCore.QBuffer( byte_array ) image = QtGui.QImage( mime_data.imageData() ) image.save( buffer, 'PNG' ) def create_checkin( byte_array ): return lambda:self.checkin_byte_array(byte_array, '.png') post( create_checkin( byte_array ), self.stored_file_ready )
[docs] def checkin_byte_array(self, byte_array, suffix): """Check a byte_array into the storage""" import cStringIO stream = cStringIO.StringIO( byte_array.data() ) return self.storage.checkin_stream( 'clipboard', suffix, stream)
[docs] def set_enabled(self, editable=True): self.clear_button.setEnabled(editable) self.open_button.setEnabled(editable) self.label.setEnabled(editable)
[docs] def set_pixmap(self, pixmap): self.label.setPixmap(pixmap) self.draw_border()
[docs] def set_image(self, image): self.set_pixmap(QtGui.QPixmap.fromImage(image))
@QtCore.pyqtSlot()
[docs] def copy_to_clipboard(self): """Copy the image to the clipboard""" if self.value: post( self.value.checkout_image, self.set_image_to_clipboard )
[docs] def set_image_to_clipboard(self, image): clipboard = QtGui.QApplication.clipboard() clipboard.setImage( image )
[docs] def clear_image(self): dummy_image = Icon('tango/32x32/mimetypes/image-x-generic.png') self.set_pixmap(dummy_image.getQPixmap())
[docs] def set_value(self, value): value = CustomEditor.set_value(self, value) if value: self.open_button.setIcon(self.open_icon.getQIcon()) self.open_button.setToolTip(unicode(_('open file'))) if value!=self.value: post( lambda:value.checkout_thumbnail( self.preview_width, self.preview_height ), self.set_image ) else: self.clear_image() self.open_button.setIcon(self.new_icon.getQIcon()) self.open_button.setToolTip(unicode(_('add file'))) self.value = value return value
[docs] def draw_border(self): self.label.setFrameShape(QtGui.QFrame.Box) self.label.setFrameShadow(QtGui.QFrame.Plain) self.label.setLineWidth(1) self.label.setFixedSize(self.preview_width, self.preview_height)
[docs] def show_fullscreen(self, image): lite_box = LiteBoxView(self) lite_box.show_fullscreen_image(image)
[docs] def eventFilter(self, object, event): if not object.isWidgetType(): return False if event.type() != QtCore.QEvent.MouseButtonPress: return False if event.modifiers() != QtCore.Qt.NoModifier: return False if event.buttons() == QtCore.Qt.LeftButton: if self.value: post( lambda:self.value.checkout_thumbnail(640,480), self.show_fullscreen ) return True return False

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