def save_pdf(widget, filename, preview=False):
# Creation du printer
printer = QPrinter()
file_names = filename
printer.setOutputFileName(file_names)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setPageMargins(10, 10, 10, 10, QPrinter.Point)
# Calcul le ratio de redimensionnement
page_width = printer.pageRect().width()
page_height = printer.pageRect().height()
widget_width = widget.width()
widget_height = widget.height()
ratio = min(page_width / widget_width, page_height / widget_height)
# Calcul du positionnement
pos_x = max(0, (page_width - ratio * widget_width) / 2)
pos_y = max(0, (page_height - ratio * widget_height) / 2)
# Render le widget dans une image QPicture pour stocker
# les directives de dessin
picture = QPicture()
widget_painter = QPainter(picture)
widget_painter.scale(ratio, ratio)
widget.render(widget_painter)
widget_painter.end()
# Render la QPicture en utilisant le QPrinter
picture_painter = QPainter()
picture_painter.begin(printer)
picture_painter.drawPicture(QPointF(pos_x, pos_y), picture)
picture_painter.end()
if preview:
affiche_pdf(file_names)
def impression(self):
# Creation du printer
printer = QPrinter()
dialog = QPrintDialog(printer, self)
if dialog.exec_() != QDialog.Accepted:
return
printer.setPageMargins(10, 10, 10, 10, QPrinter.Point)
# Calcul le ratio de redimensionnement
page_width = printer.pageRect().width()
page_height = printer.pageRect().height()
widget_width = self.rapport.width()
widget_height = self.rapport.height()
ratio = min(page_width / widget_width, page_height / widget_height)
# Calcul du positionnement
pos_x = max(0, (page_width - ratio * widget_width) / 2)
pos_y = max(0, (page_height - ratio * widget_height) / 2)
# Render le widget dans une image QPicture pour stocker
# les directives de dessin
picture = QPicture()
widget_painter = QPainter(picture)
widget_painter.scale(ratio, ratio)
self.rapport.render(widget_painter)
widget_painter.end()
# Render la QPicture en utilisant le QPrinter
picture_painter = QPainter()
picture_painter.begin(printer)
picture_painter.drawPicture(QPointF(pos_x, pos_y), picture)
picture_painter.end()
def render_from_z_mask(z_buf_mask, context):
z_buf_mask = convert_deep_to_alpha(z_buf_mask)
# рисовать
qp = QPainter()
picture = QPicture()
qp.begin(picture)
for x in range(len(z_buf_mask)):
for y in range(len(z_buf_mask[0])):
# a = color_mask[x][y]
a = QColor(Qt.black)
a.setAlpha(z_buf_mask[x][y])
qp.setPen(a)
qp.drawPoint(x, y)
qp.end() # painting done
picture.save("drawing.pic") # save picture
picture = QPicture()
picture.load("drawing.pic") # load picture
qp = QPainter()
qp.begin(context) # paint in myImage
qp.drawPicture(0, 0, picture) # draw the picture at (0,0)
qp.end()
def paintEvent(self, event):
if self.picture == None:
print("Warning: picture not yet rendered")
else:
qp = QPainter()
qp.begin(self)
qp.drawPicture(self.xpos, self.ypos, self.picture)
qp.end()
def paint(self, p: QPainter, *args) -> None:
"""
Method to paint this Widget
:param p: The painter to paint this widget with
:return: None
"""
p.drawPicture(0, 0, self.picture)
def paint(self, painter: QtGui.QPainter, options, widget=None):
"""
Starts painting the rectangle.
:param painter: the QPainter object.
:param options: options to pass to the painter (actually ignored).
:param widget: widget to use with the painter (actually ignored)
"""
painter.drawPicture(0, 0, self.picture)
def render_from_color_mask(color_mask, context):
qp = QPainter()
picture = QPicture()
qp.begin(picture)
for x in range(len(color_mask)):
for y in range(len(color_mask[0])):
a = color_mask[x][y]
qp.setPen(a)
qp.drawPoint(x, y)
qp.end() # painting done
picture.save("drawing.pic") # save picture
picture = QPicture()
picture.load("drawing.pic") # load picture
qp = QPainter()
qp.begin(context) # paint in myImage
qp.drawPicture(0, 0, picture) # draw the picture at (0,0)
qp.end()
