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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):
assert self._frame
image = QtGui.QImage(self._bg_image_filename)
# rescale and offset
imw = image.width()
imh = image.height()
dcw = self._frame.width()+1
dch = self._frame.height()
imratio = imw/float(imh)
dcratio = dcw/float(dch)
log.debug(u'Image scaling params %s %s %s %s %s %s', imw, imh, imratio, dcw, dch, dcratio)
if imratio > dcratio:
scale = dcw/float(imw)
elif imratio < dcratio:
scale = dch/float(imh)
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))
preview = QtGui.QPixmap(self._bg_image_filename)
width = self._frame.width()
height = self._frame.height()
preview = preview.scaled(width, height, QtCore.Qt.KeepAspectRatio, QtCore.Qt.SmoothTransformation)
realwidth = preview.width()
realheight = preview.height()
# and move it to the centre of the preview space
self.bg_image = QtGui.QPixmap(width, height)
self.bg_image.fill(QtCore.Qt.transparent)
painter = QtGui.QPainter(self.bg_image)
self.background_offsetx = (width - realwidth) / 2
self.background_offsety = (height - realheight) / 2
painter.drawPixmap(self.background_offsetx, self.background_offsety , preview)
def set_frame_dest(self, frame_width, frame_height, preview=False):
"""