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Rendering cleanup

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This commit is contained in:
Tim Bentley 2009-05-19 17:27:01 +01:00
parent 3ba6733f14
commit b4a08096d6
1 changed files with 13 additions and 20 deletions
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33
openlp/core/lib/renderer.py
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@ -78,26 +78,19 @@ class Renderer:
def scale_bg_image(self): def scale_bg_image(self):
assert self._frame assert self._frame
image = QtGui.QImage(self._bg_image_filename) preview = QtGui.QPixmap(self._bg_image_filename)
# rescale and offset width = self._frame.width()
imw = image.width() height = self._frame.height()
imh = image.height() preview = preview.scaled(width, height, QtCore.Qt.KeepAspectRatio, QtCore.Qt.SmoothTransformation)
dcw = self._frame.width()+1 realwidth = preview.width()
dch = self._frame.height() realheight = preview.height()
imratio = imw/float(imh) # and move it to the centre of the preview space
dcratio = dcw/float(dch) self.bg_image = QtGui.QPixmap(width, height)
log.debug(u'Image scaling params %s %s %s %s %s %s', imw, imh, imratio, dcw, dch, dcratio) self.bg_image.fill(QtCore.Qt.transparent)
if imratio > dcratio: painter = QtGui.QPainter(self.bg_image)
scale = dcw/float(imw) self.background_offsetx = (width - realwidth) / 2
elif imratio < dcratio: self.background_offsety = (height - realheight) / 2
scale = dch/float(imh) painter.drawPixmap(self.background_offsetx, self.background_offsety , preview)
else:
scale = dcw/float(imw) # either will do
neww = int(round(imw*scale))
newh = int(round(imh*scale))
self.background_offsetx=(dcw-neww)/2
self.background_offsety=(dch-newh)/2
self.bg_image=QtGui.QPixmap.fromImage(image.scaled(QtCore.QSize(neww, newh), Qt.Qt.KeepAspectRatio))
def set_frame_dest(self, frame_width, frame_height, preview=False): def set_frame_dest(self, frame_width, frame_height, preview=False):
""" """