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Diffstat (limited to 'silx/gui/widgets/PrintPreview.py')
| -rw-r--r-- | silx/gui/widgets/PrintPreview.py | 728 |
1 files changed, 0 insertions, 728 deletions
diff --git a/silx/gui/widgets/PrintPreview.py b/silx/gui/widgets/PrintPreview.py deleted file mode 100644 index 96af34b..0000000 --- a/silx/gui/widgets/PrintPreview.py +++ /dev/null @@ -1,728 +0,0 @@ -# coding: utf-8 -# /*########################################################################## -# -# Copyright (c) 2004-2018 European Synchrotron Radiation Facility -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -# THE SOFTWARE. -# -# ###########################################################################*/ -"""This module implements a print preview dialog. - -The dialog provides methods to send images, pixmaps and SVG -items to the page to be printed. - -The user can interactively move and resize the items. -""" -import sys -import logging -from silx.gui import qt, printer - - -__authors__ = ["V.A. Sole", "P. Knobel"] -__license__ = "MIT" -__date__ = "11/07/2017" - - -_logger = logging.getLogger(__name__) - - -class PrintPreviewDialog(qt.QDialog): - """Print preview dialog widget. - """ - def __init__(self, parent=None, printer=None): - - qt.QDialog.__init__(self, parent) - self.setWindowTitle("Print Preview") - self.setModal(False) - self.resize(400, 500) - - self.mainLayout = qt.QVBoxLayout(self) - self.mainLayout.setContentsMargins(0, 0, 0, 0) - self.mainLayout.setSpacing(0) - - self._buildToolbar() - - self.printer = printer - # :class:`QPrinter` (paint device that paints on a printer). - # :meth:`showEvent` has been reimplemented to enforce printer - # setup. - - self.printDialog = None - # :class:`QPrintDialog` (dialog for specifying the printer's - # configuration) - - self.scene = None - # :class:`QGraphicsScene` (surface for managing - # 2D graphical items) - - self.page = None - # :class:`QGraphicsRectItem` used as white background page on which - # to display the print preview. - - self.view = None - # :class:`QGraphicsView` widget for displaying :attr:`scene` - - self._svgItems = [] - # List storing :class:`QSvgRenderer` items to be printed, added in - # :meth:`addSvgItem`, cleared in :meth:`_clearAll`. - # This ensures that there is a reference pointing to the items, - # which ensures they are not destroyed before being printed. - - self._viewScale = 1.0 - # Zoom level (1.0 is 100%) - - self._toBeCleared = False - # Flag indicating that all items must be removed from :attr:`scene` - # and from :attr:`_svgItems`. - # Set to True after a successful printing. The widget is then hidden, - # and it will be cleared the next time it is shown. - # Reset to False after :meth:`_clearAll` has done its job. - - def _buildToolbar(self): - toolBar = qt.QWidget(self) - # a layout for the toolbar - toolsLayout = qt.QHBoxLayout(toolBar) - toolsLayout.setContentsMargins(0, 0, 0, 0) - toolsLayout.setSpacing(0) - - hideBut = qt.QPushButton("Hide", toolBar) - hideBut.setToolTip("Hide print preview dialog") - hideBut.clicked.connect(self.hide) - - cancelBut = qt.QPushButton("Clear All", toolBar) - cancelBut.setToolTip("Remove all items") - cancelBut.clicked.connect(self._clearAll) - - removeBut = qt.QPushButton("Remove", - toolBar) - removeBut.setToolTip("Remove selected item (use left click to select)") - removeBut.clicked.connect(self._remove) - - setupBut = qt.QPushButton("Setup", toolBar) - setupBut.setToolTip("Select and configure a printer") - setupBut.clicked.connect(self.setup) - - printBut = qt.QPushButton("Print", toolBar) - printBut.setToolTip("Print page and close print preview") - printBut.clicked.connect(self._print) - - zoomPlusBut = qt.QPushButton("Zoom +", toolBar) - zoomPlusBut.clicked.connect(self._zoomPlus) - - zoomMinusBut = qt.QPushButton("Zoom -", toolBar) - zoomMinusBut.clicked.connect(self._zoomMinus) - - toolsLayout.addWidget(hideBut) - toolsLayout.addWidget(printBut) - toolsLayout.addWidget(cancelBut) - toolsLayout.addWidget(removeBut) - toolsLayout.addWidget(setupBut) - # toolsLayout.addStretch() - # toolsLayout.addWidget(marginLabel) - # toolsLayout.addWidget(self.marginSpin) - toolsLayout.addStretch() - # toolsLayout.addWidget(scaleLabel) - # toolsLayout.addWidget(self.scaleCombo) - toolsLayout.addWidget(zoomPlusBut) - toolsLayout.addWidget(zoomMinusBut) - # toolsLayout.addStretch() - self.toolBar = toolBar - self.mainLayout.addWidget(self.toolBar) - - def _buildStatusBar(self): - """Create the status bar used to display the printer name - or output file name.""" - # status bar - statusBar = qt.QStatusBar(self) - self.targetLabel = qt.QLabel(statusBar) - self._updateTargetLabel() - statusBar.addWidget(self.targetLabel) - self.mainLayout.addWidget(statusBar) - - def _updateTargetLabel(self): - """Update printer name or file name shown in the status bar.""" - if self.printer is None: - self.targetLabel.setText("Undefined printer") - return - if self.printer.outputFileName(): - self.targetLabel.setText("File:" + - self.printer.outputFileName()) - else: - self.targetLabel.setText("Printer:" + - self.printer.printerName()) - - def _updatePrinter(self): - """Resize :attr:`page`, :attr:`scene` and :attr:`view` to :attr:`printer` - width and height.""" - printer = self.printer - assert printer is not None, \ - "_updatePrinter should not be called unless a printer is defined" - if self.scene is None: - self.scene = qt.QGraphicsScene() - self.scene.setBackgroundBrush(qt.QColor(qt.Qt.lightGray)) - self.scene.setSceneRect(qt.QRectF(0, 0, printer.width(), printer.height())) - - if self.page is None: - self.page = qt.QGraphicsRectItem(0, 0, printer.width(), printer.height()) - self.page.setBrush(qt.QColor(qt.Qt.white)) - self.scene.addItem(self.page) - - self.scene.setSceneRect(qt.QRectF(0, 0, printer.width(), printer.height())) - self.page.setPos(qt.QPointF(0.0, 0.0)) - self.page.setRect(qt.QRectF(0, 0, printer.width(), printer.height())) - - if self.view is None: - self.view = qt.QGraphicsView(self.scene) - self.mainLayout.addWidget(self.view) - self._buildStatusBar() - # self.view.scale(1./self._viewScale, 1./self._viewScale) - self.view.fitInView(self.page.rect(), qt.Qt.KeepAspectRatio) - self._viewScale = 1.00 - self._updateTargetLabel() - - # Public methods - def addImage(self, image, title=None, comment=None, commentPosition=None): - """Add an image to the print preview scene. - - :param QImage image: Image to be added to the scene - :param str title: Title shown above (centered) the image - :param str comment: Comment displayed below the image - :param commentPosition: "CENTER" or "LEFT" - """ - self.addPixmap(qt.QPixmap.fromImage(image), - title=title, comment=comment, - commentPosition=commentPosition) - - def addPixmap(self, pixmap, title=None, comment=None, commentPosition=None): - """Add a pixmap to the print preview scene - - :param QPixmap pixmap: Pixmap to be added to the scene - :param str title: Title shown above (centered) the pixmap - :param str comment: Comment displayed below the pixmap - :param commentPosition: "CENTER" or "LEFT" - """ - if self._toBeCleared: - self._clearAll() - self.ensurePrinterIsSet() - if self.printer is None: - _logger.error("printer is not set, cannot add pixmap to page") - return - if title is None: - title = ' ' * 88 - if comment is None: - comment = ' ' * 88 - if commentPosition is None: - commentPosition = "CENTER" - if qt.qVersion() < "5.0": - rectItem = qt.QGraphicsRectItem(self.page, self.scene) - else: - rectItem = qt.QGraphicsRectItem(self.page) - - rectItem.setRect(qt.QRectF(1, 1, - pixmap.width(), pixmap.height())) - - pen = rectItem.pen() - color = qt.QColor(qt.Qt.red) - color.setAlpha(1) - pen.setColor(color) - rectItem.setPen(pen) - rectItem.setZValue(1) - rectItem.setFlag(qt.QGraphicsItem.ItemIsSelectable, True) - rectItem.setFlag(qt.QGraphicsItem.ItemIsMovable, True) - rectItem.setFlag(qt.QGraphicsItem.ItemIsFocusable, False) - - rectItemResizeRect = _GraphicsResizeRectItem(rectItem, self.scene) - rectItemResizeRect.setZValue(2) - - if qt.qVersion() < "5.0": - pixmapItem = qt.QGraphicsPixmapItem(rectItem, self.scene) - else: - pixmapItem = qt.QGraphicsPixmapItem(rectItem) - pixmapItem.setPixmap(pixmap) - pixmapItem.setZValue(0) - - # I add the title - if qt.qVersion() < "5.0": - textItem = qt.QGraphicsTextItem(title, rectItem, self.scene) - else: - textItem = qt.QGraphicsTextItem(title, rectItem) - textItem.setTextInteractionFlags(qt.Qt.TextEditorInteraction) - offset = 0.5 * textItem.boundingRect().width() - textItem.moveBy(0.5 * pixmap.width() - offset, -20) - textItem.setZValue(2) - - # I add the comment - if qt.qVersion() < "5.0": - commentItem = qt.QGraphicsTextItem(comment, rectItem, self.scene) - else: - commentItem = qt.QGraphicsTextItem(comment, rectItem) - commentItem.setTextInteractionFlags(qt.Qt.TextEditorInteraction) - offset = 0.5 * commentItem.boundingRect().width() - if commentPosition.upper() == "LEFT": - x = 1 - else: - x = 0.5 * pixmap.width() - offset - commentItem.moveBy(x, pixmap.height() + 20) - commentItem.setZValue(2) - - rectItem.moveBy(20, 40) - - def addSvgItem(self, item, title=None, - comment=None, commentPosition=None, - viewBox=None, keepRatio=True): - """Add a SVG item to the scene. - - :param QSvgRenderer item: SVG item to be added to the scene. - :param str title: Title shown above (centered) the SVG item. - :param str comment: Comment displayed below the SVG item. - :param str commentPosition: "CENTER" or "LEFT" - :param QRectF viewBox: Bounding box for the item on the print page - (xOffset, yOffset, width, height). If None, use original - item size. - :param bool keepRatio: If True, resizing the item will preserve its - original aspect ratio. - """ - if not qt.HAS_SVG: - raise RuntimeError("Missing QtSvg library.") - if not isinstance(item, qt.QSvgRenderer): - raise TypeError("addSvgItem: QSvgRenderer expected") - if self._toBeCleared: - self._clearAll() - self.ensurePrinterIsSet() - if self.printer is None: - _logger.error("printer is not set, cannot add SvgItem to page") - return - - if title is None: - title = 50 * ' ' - if comment is None: - comment = 80 * ' ' - if commentPosition is None: - commentPosition = "CENTER" - - if viewBox is None: - if hasattr(item, "_viewBox"): - # PyMca compatibility: viewbox attached to item - viewBox = item._viewBox - else: - # try the original item viewbox - viewBox = item.viewBoxF() - - svgItem = _GraphicsSvgRectItem(viewBox, self.page) - svgItem.setSvgRenderer(item) - - svgItem.setCacheMode(qt.QGraphicsItem.NoCache) - svgItem.setZValue(0) - svgItem.setFlag(qt.QGraphicsItem.ItemIsSelectable, True) - svgItem.setFlag(qt.QGraphicsItem.ItemIsMovable, True) - svgItem.setFlag(qt.QGraphicsItem.ItemIsFocusable, False) - - rectItemResizeRect = _GraphicsResizeRectItem(svgItem, self.scene, - keepratio=keepRatio) - rectItemResizeRect.setZValue(2) - - self._svgItems.append(item) - - # Comment / legend - dummyComment = 80 * "1" - if qt.qVersion() < '5.0': - commentItem = qt.QGraphicsTextItem(dummyComment, svgItem, self.scene) - else: - commentItem = qt.QGraphicsTextItem(dummyComment, svgItem) - commentItem.setTextInteractionFlags(qt.Qt.TextEditorInteraction) - # we scale the text to have the legend box have the same width as the graph - scaleCalculationRect = qt.QRectF(commentItem.boundingRect()) - scale = svgItem.boundingRect().width() / scaleCalculationRect.width() - - commentItem.setPlainText(comment) - commentItem.setZValue(1) - - commentItem.setFlag(qt.QGraphicsItem.ItemIsMovable, True) - if qt.qVersion() < "5.0": - commentItem.scale(scale, scale) - else: - commentItem.setScale(scale) - - # align - if commentPosition.upper() == "CENTER": - alignment = qt.Qt.AlignCenter - elif commentPosition.upper() == "RIGHT": - alignment = qt.Qt.AlignRight - else: - alignment = qt.Qt.AlignLeft - commentItem.setTextWidth(commentItem.boundingRect().width()) - center_format = qt.QTextBlockFormat() - center_format.setAlignment(alignment) - cursor = commentItem.textCursor() - cursor.select(qt.QTextCursor.Document) - cursor.mergeBlockFormat(center_format) - cursor.clearSelection() - commentItem.setTextCursor(cursor) - if alignment == qt.Qt.AlignLeft: - deltax = 0 - else: - deltax = (svgItem.boundingRect().width() - commentItem.boundingRect().width()) / 2. - commentItem.moveBy(svgItem.boundingRect().x() + deltax, - svgItem.boundingRect().y() + svgItem.boundingRect().height()) - - # Title - if qt.qVersion() < '5.0': - textItem = qt.QGraphicsTextItem(title, svgItem, self.scene) - else: - textItem = qt.QGraphicsTextItem(title, svgItem) - textItem.setTextInteractionFlags(qt.Qt.TextEditorInteraction) - textItem.setZValue(1) - textItem.setFlag(qt.QGraphicsItem.ItemIsMovable, True) - - title_offset = 0.5 * textItem.boundingRect().width() - textItem.moveBy(svgItem.boundingRect().x() + - 0.5 * svgItem.boundingRect().width() - title_offset * scale, - svgItem.boundingRect().y()) - if qt.qVersion() < "5.0": - textItem.scale(scale, scale) - else: - textItem.setScale(scale) - - def setup(self): - """Open a print dialog to ensure the :attr:`printer` is set. - - If the setting fails or is cancelled, :attr:`printer` is reset to - *None*. - """ - if self.printer is None: - self.printer = printer.getDefaultPrinter() - if self.printDialog is None: - self.printDialog = qt.QPrintDialog(self.printer, self) - if self.printDialog.exec_(): - if self.printer.width() <= 0 or self.printer.height() <= 0: - self.message = qt.QMessageBox(self) - self.message.setIcon(qt.QMessageBox.Critical) - self.message.setText("Unknown library error \non printer initialization") - self.message.setWindowTitle("Library Error") - self.message.setModal(0) - self.printer = None - return - self.printer.setFullPage(True) - self._updatePrinter() - else: - # printer setup cancelled, check for a possible previous configuration - if self.page is None: - # not initialized - self.printer = None - - def ensurePrinterIsSet(self): - """If the printer is not already set, try to interactively - setup the printer using a QPrintDialog. - In case of failure, hide widget and log a warning. - - :return: True if printer was set. False if it failed or if the - selection dialog was canceled. - """ - if self.printer is None: - self.setup() - if self.printer is None: - self.hide() - _logger.warning("Printer setup failed or was cancelled, " + - "but printer is required.") - return self.printer is not None - - def setOutputFileName(self, name): - """Set output filename. - - Setting a non-empty name enables printing to file. - - :param str name: File name (path)""" - self.printer.setOutputFileName(name) - - # overloaded methods - def exec_(self): - if self._toBeCleared: - self._clearAll() - return qt.QDialog.exec_(self) - - def raise_(self): - if self._toBeCleared: - self._clearAll() - return qt.QDialog.raise_(self) - - def showEvent(self, event): - """Reimplemented to force printer setup. - In case of failure, hide the widget.""" - if self._toBeCleared: - self._clearAll() - self.ensurePrinterIsSet() - - return super(PrintPreviewDialog, self).showEvent(event) - - # button callbacks - def _print(self): - """Do the printing, hide the print preview dialog, - set :attr:`_toBeCleared` flag to True to trigger clearing the - next time the dialog is shown. - - If the printer is not setup, do it first.""" - printer = self.printer - - painter = qt.QPainter() - if not painter.begin(printer) or printer is None: - _logger.error("Cannot initialize printer") - return - try: - self.scene.render(painter, qt.QRectF(0, 0, printer.width(), printer.height()), - qt.QRectF(self.page.rect().x(), self.page.rect().y(), - self.page.rect().width(), self.page.rect().height()), - qt.Qt.KeepAspectRatio) - painter.end() - self.hide() - self.accept() - self._toBeCleared = True - except: # FIXME - painter.end() - qt.QMessageBox.critical(self, "ERROR", - 'Printing problem:\n %s' % sys.exc_info()[1]) - _logger.error('printing problem:\n %s' % sys.exc_info()[1]) - return - - def _zoomPlus(self): - self._viewScale *= 1.20 - self.view.scale(1.20, 1.20) - - def _zoomMinus(self): - self._viewScale *= 0.80 - self.view.scale(0.80, 0.80) - - def _clearAll(self): - """ - Clear the print preview window, remove all items - but keep the page. - """ - itemlist = self.scene.items() - keep = self.page - while len(itemlist) != 1: - if itemlist.index(keep) == 0: - self.scene.removeItem(itemlist[1]) - else: - self.scene.removeItem(itemlist[0]) - itemlist = self.scene.items() - self._svgItems = [] - self._toBeCleared = False - - def _remove(self): - """Remove selected item in :attr:`scene`. - """ - itemlist = self.scene.items() - - # this loop is not efficient if there are many items ... - for item in itemlist: - if item.isSelected(): - self.scene.removeItem(item) - - -class SingletonPrintPreviewDialog(PrintPreviewDialog): - """Singleton print preview dialog. - - All widgets in a program that instantiate this class will share - a single print preview dialog. This enables sending - multiple images to a single page to be printed. - """ - _instance = None - - def __new__(self, *var, **kw): - if self._instance is None: - self._instance = PrintPreviewDialog(*var, **kw) - return self._instance - - -class _GraphicsSvgRectItem(qt.QGraphicsRectItem): - """:class:`qt.QGraphicsRectItem` with an attached - :class:`qt.QSvgRenderer`, and with a painter redefined to render - the SVG item.""" - def setSvgRenderer(self, renderer): - """ - - :param QSvgRenderer renderer: svg renderer - """ - self._renderer = renderer - - def paint(self, painter, *var, **kw): - self._renderer.render(painter, self.boundingRect()) - - -class _GraphicsResizeRectItem(qt.QGraphicsRectItem): - """Resizable QGraphicsRectItem.""" - def __init__(self, parent=None, scene=None, keepratio=True): - if qt.qVersion() < '5.0': - qt.QGraphicsRectItem.__init__(self, parent, scene) - else: - qt.QGraphicsRectItem.__init__(self, parent) - rect = parent.boundingRect() - x = rect.x() - y = rect.y() - w = rect.width() - h = rect.height() - self._newRect = None - self.keepRatio = keepratio - self.setRect(qt.QRectF(x + w - 40, y + h - 40, 40, 40)) - self.setAcceptHoverEvents(True) - pen = qt.QPen() - color = qt.QColor(qt.Qt.white) - color.setAlpha(0) - pen.setColor(color) - pen.setStyle(qt.Qt.NoPen) - self.setPen(pen) - self.setBrush(color) - self.setFlag(self.ItemIsMovable, True) - self.show() - - def hoverEnterEvent(self, event): - if self.parentItem().isSelected(): - self.parentItem().setSelected(False) - if self.keepRatio: - self.setCursor(qt.QCursor(qt.Qt.SizeFDiagCursor)) - else: - self.setCursor(qt.QCursor(qt.Qt.SizeAllCursor)) - self.setBrush(qt.QBrush(qt.Qt.yellow, qt.Qt.SolidPattern)) - return qt.QGraphicsRectItem.hoverEnterEvent(self, event) - - def hoverLeaveEvent(self, event): - self.setCursor(qt.QCursor(qt.Qt.ArrowCursor)) - pen = qt.QPen() - color = qt.QColor(qt.Qt.white) - color.setAlpha(0) - pen.setColor(color) - pen.setStyle(qt.Qt.NoPen) - self.setPen(pen) - self.setBrush(color) - return qt.QGraphicsRectItem.hoverLeaveEvent(self, event) - - def mousePressEvent(self, event): - if self._newRect is not None: - self._newRect = None - self._point0 = self.pos() - parent = self.parentItem() - scene = self.scene() - # following line prevents dragging along the previously selected - # item when resizing another one - scene.clearSelection() - - rect = parent.boundingRect() - self._x = rect.x() - self._y = rect.y() - self._w = rect.width() - self._h = rect.height() - self._ratio = self._w / self._h - if qt.qVersion() < "5.0": - self._newRect = qt.QGraphicsRectItem(parent, scene) - else: - self._newRect = qt.QGraphicsRectItem(parent) - self._newRect.setRect(qt.QRectF(self._x, - self._y, - self._w, - self._h)) - qt.QGraphicsRectItem.mousePressEvent(self, event) - - def mouseMoveEvent(self, event): - point1 = self.pos() - deltax = point1.x() - self._point0.x() - deltay = point1.y() - self._point0.y() - if self.keepRatio: - r1 = (self._w + deltax) / self._w - r2 = (self._h + deltay) / self._h - if r1 < r2: - self._newRect.setRect(qt.QRectF(self._x, - self._y, - self._w + deltax, - (self._w + deltax) / self._ratio)) - else: - self._newRect.setRect(qt.QRectF(self._x, - self._y, - (self._h + deltay) * self._ratio, - self._h + deltay)) - else: - self._newRect.setRect(qt.QRectF(self._x, - self._y, - self._w + deltax, - self._h + deltay)) - qt.QGraphicsRectItem.mouseMoveEvent(self, event) - - def mouseReleaseEvent(self, event): - point1 = self.pos() - deltax = point1.x() - self._point0.x() - deltay = point1.y() - self._point0.y() - self.moveBy(-deltax, -deltay) - parent = self.parentItem() - - # deduce scale from rectangle - if (qt.qVersion() < "5.0") or self.keepRatio: - scalex = self._newRect.rect().width() / self._w - scaley = scalex - else: - scalex = self._newRect.rect().width() / self._w - scaley = self._newRect.rect().height() / self._h - - if qt.qVersion() < "5.0": - parent.scale(scalex, scaley) - else: - # apply the scale to the previous transformation matrix - previousTransform = parent.transform() - parent.setTransform( - previousTransform.scale(scalex, scaley)) - - self.scene().removeItem(self._newRect) - self._newRect = None - qt.QGraphicsRectItem.mouseReleaseEvent(self, event) - - -def main(): - """ - """ - if len(sys.argv) < 2: - print("give an image file as parameter please.") - sys.exit(1) - - if len(sys.argv) > 2: - print("only one parameter please.") - sys.exit(1) - - filename = sys.argv[1] - w = PrintPreviewDialog() - w.resize(400, 500) - - comment = "" - for i in range(20): - comment += "Line number %d: En un lugar de La Mancha de cuyo nombre ...\n" % i - - if filename[-3:] == "svg": - item = qt.QSvgRenderer(filename, w.page) - w.addSvgItem(item, title=filename, - comment=comment, commentPosition="CENTER") - else: - w.addPixmap(qt.QPixmap.fromImage(qt.QImage(filename)), - title=filename, - comment=comment, - commentPosition="CENTER") - w.addImage(qt.QImage(filename), comment=comment, commentPosition="LEFT") - - sys.exit(w.exec_()) - - -if __name__ == '__main__': - a = qt.QApplication(sys.argv) - main() - a.exec_() |