diff options
Diffstat (limited to 'src/silx/gui/widgets/PrintPreview.py')
| -rw-r--r-- | src/silx/gui/widgets/PrintPreview.py | 173 |
1 files changed, 101 insertions, 72 deletions
diff --git a/src/silx/gui/widgets/PrintPreview.py b/src/silx/gui/widgets/PrintPreview.py index dd6af1f..285f12c 100644 --- a/src/silx/gui/widgets/PrintPreview.py +++ b/src/silx/gui/widgets/PrintPreview.py @@ -42,10 +42,9 @@ _logger = logging.getLogger(__name__) class PrintPreviewDialog(qt.QDialog): - """Print preview dialog widget. - """ - def __init__(self, parent=None, printer=None): + """Print preview dialog widget.""" + def __init__(self, parent=None, printer=None): qt.QDialog.__init__(self, parent) self.setWindowTitle("Print Preview") self.setModal(False) @@ -108,8 +107,7 @@ class PrintPreviewDialog(qt.QDialog): cancelBut.setToolTip("Remove all items") cancelBut.clicked.connect(self._clearAll) - removeBut = qt.QPushButton("Remove", - toolBar) + removeBut = qt.QPushButton("Remove", toolBar) removeBut.setToolTip("Remove selected item (use left click to select)") removeBut.clicked.connect(self._remove) @@ -160,18 +158,17 @@ class PrintPreviewDialog(qt.QDialog): self.targetLabel.setText("Undefined printer") return if self.printer.outputFileName(): - self.targetLabel.setText("File:" + - self.printer.outputFileName()) + self.targetLabel.setText("File:" + self.printer.outputFileName()) else: - self.targetLabel.setText("Printer:" + - self.printer.printerName()) + 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" + 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)) @@ -204,9 +201,12 @@ class PrintPreviewDialog(qt.QDialog): :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) + 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 @@ -223,14 +223,13 @@ class PrintPreviewDialog(qt.QDialog): _logger.error("printer is not set, cannot add pixmap to page") return if title is None: - title = ' ' * 88 + title = " " * 88 if comment is None: - comment = ' ' * 88 + comment = " " * 88 if commentPosition is None: commentPosition = "CENTER" rectItem = qt.QGraphicsRectItem(self.page) - rectItem.setRect(qt.QRectF(1, 1, - pixmap.width(), pixmap.height())) + rectItem.setRect(qt.QRectF(1, 1, pixmap.width(), pixmap.height())) pen = rectItem.pen() color = qt.QColor(qt.Qt.red) @@ -269,9 +268,15 @@ class PrintPreviewDialog(qt.QDialog): rectItem.moveBy(20, 40) - def addSvgItem(self, item, title=None, - comment=None, commentPosition=None, - viewBox=None, keepRatio=True): + 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. @@ -296,9 +301,9 @@ class PrintPreviewDialog(qt.QDialog): return if title is None: - title = 50 * ' ' + title = 50 * " " if comment is None: - comment = 80 * ' ' + comment = 80 * " " if commentPosition is None: commentPosition = "CENTER" @@ -319,8 +324,9 @@ class PrintPreviewDialog(qt.QDialog): svgItem.setFlag(qt.QGraphicsItem.ItemIsMovable, True) svgItem.setFlag(qt.QGraphicsItem.ItemIsFocusable, False) - rectItemResizeRect = _GraphicsResizeRectItem(svgItem, self.scene, - keepratio=keepRatio) + rectItemResizeRect = _GraphicsResizeRectItem( + svgItem, self.scene, keepratio=keepRatio + ) rectItemResizeRect.setZValue(2) self._svgItems.append(item) @@ -357,9 +363,13 @@ class PrintPreviewDialog(qt.QDialog): 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()) + deltax = ( + svgItem.boundingRect().width() - commentItem.boundingRect().width() + ) / 2.0 + commentItem.moveBy( + svgItem.boundingRect().x() + deltax, + svgItem.boundingRect().y() + svgItem.boundingRect().height(), + ) # Title textItem = qt.QGraphicsTextItem(title, svgItem) @@ -368,9 +378,12 @@ class PrintPreviewDialog(qt.QDialog): 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()) + textItem.moveBy( + svgItem.boundingRect().x() + + 0.5 * svgItem.boundingRect().width() + - title_offset * scale, + svgItem.boundingRect().y(), + ) textItem.setScale(scale) def setup(self): @@ -387,7 +400,9 @@ class PrintPreviewDialog(qt.QDialog): 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.setText( + "Unknown library error \non printer initialization" + ) self.message.setWindowTitle("Library Error") self.message.setModal(0) self.printer = None @@ -412,8 +427,9 @@ class PrintPreviewDialog(qt.QDialog): self.setup() if self.printer is None: self.hide() - _logger.warning("Printer setup failed or was cancelled, " + - "but printer is required.") + _logger.warning( + "Printer setup failed or was cancelled, " + "but printer is required." + ) return self.printer is not None def setOutputFileName(self, name): @@ -461,19 +477,27 @@ class PrintPreviewDialog(qt.QDialog): _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) + 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 + 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]) + 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): @@ -501,8 +525,7 @@ class PrintPreviewDialog(qt.QDialog): self._toBeCleared = False def _remove(self): - """Remove selected item in :attr:`scene`. - """ + """Remove selected item in :attr:`scene`.""" itemlist = self.scene.items() # this loop is not efficient if there are many items ... @@ -518,6 +541,7 @@ class SingletonPrintPreviewDialog(PrintPreviewDialog): a single print preview dialog. This enables sending multiple images to a single page to be printed. """ + _instance = None def __new__(self, *var, **kw): @@ -530,6 +554,7 @@ 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): """ @@ -543,6 +568,7 @@ class _GraphicsSvgRectItem(qt.QGraphicsRectItem): class _GraphicsResizeRectItem(qt.QGraphicsRectItem): """Resizable QGraphicsRectItem.""" + def __init__(self, parent=None, scene=None, keepratio=True): qt.QGraphicsRectItem.__init__(self, parent) rect = parent.boundingRect() @@ -561,7 +587,7 @@ class _GraphicsResizeRectItem(qt.QGraphicsRectItem): pen.setStyle(qt.Qt.NoPen) self.setPen(pen) self.setBrush(color) - self.setFlag(self.ItemIsMovable, True) + self.setFlag(qt.QGraphicsItem.ItemIsMovable, True) self.show() def hoverEnterEvent(self, event): @@ -602,10 +628,7 @@ class _GraphicsResizeRectItem(qt.QGraphicsRectItem): self._h = rect.height() self._ratio = self._w / self._h self._newRect = qt.QGraphicsRectItem(parent) - self._newRect.setRect(qt.QRectF(self._x, - self._y, - self._w, - self._h)) + self._newRect.setRect(qt.QRectF(self._x, self._y, self._w, self._h)) qt.QGraphicsRectItem.mousePressEvent(self, event) def mouseMoveEvent(self, event): @@ -616,20 +639,27 @@ class _GraphicsResizeRectItem(qt.QGraphicsRectItem): 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)) + 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)) + 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)) + self._newRect.setRect( + qt.QRectF(self._x, self._y, self._w + deltax, self._h + deltay) + ) qt.QGraphicsRectItem.mouseMoveEvent(self, event) def mouseReleaseEvent(self, event): @@ -649,8 +679,7 @@ class _GraphicsResizeRectItem(qt.QGraphicsRectItem): # apply the scale to the previous transformation matrix previousTransform = parent.transform() - parent.setTransform( - previousTransform.scale(scalex, scaley)) + parent.setTransform(previousTransform.scale(scalex, scaley)) self.scene().removeItem(self._newRect) self._newRect = None @@ -658,8 +687,7 @@ class _GraphicsResizeRectItem(qt.QGraphicsRectItem): def main(): - """ - """ + """ """ if len(sys.argv) < 2: print("give an image file as parameter please.") sys.exit(1) @@ -678,19 +706,20 @@ def main(): if filename[-3:] == "svg": item = qt.QSvgRenderer(filename, w.page) - w.addSvgItem(item, title=filename, - comment=comment, commentPosition="CENTER") + 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.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__': +if __name__ == "__main__": a = qt.QApplication(sys.argv) main() a.exec() |