def testScaleSafe(self):
""" test scaleSafe method """
view = QgsLayoutView()
view.fitInView(QRectF(0, 0, 10, 10))
scale = view.transform().m11()
view.scaleSafe(2)
self.assertAlmostEqual(view.transform().m11(), 2)
view.scaleSafe(4)
self.assertAlmostEqual(view.transform().m11(), 8)
# try to zoom in heaps
view.scaleSafe(99999999)
# assume we have hit the limit
scale = view.transform().m11()
view.scaleSafe(2)
self.assertAlmostEqual(view.transform().m11(), scale)
view.setTransform(QTransform.fromScale(1, 1))
self.assertAlmostEqual(view.transform().m11(), 1)
# test zooming out
view.scaleSafe(0.5)
self.assertAlmostEqual(view.transform().m11(), 0.5)
view.scaleSafe(0.1)
self.assertAlmostEqual(view.transform().m11(), 0.05)
# try zooming out heaps
view.scaleSafe(0.000000001)
# assume we have hit the limit
scale = view.transform().m11()
view.scaleSafe(0.5)
self.assertAlmostEqual(view.transform().m11(), scale)
def testScaleSafe(self):
""" test scaleSafe method """
view = QgsLayoutView()
view.fitInView(QRectF(0, 0, 10, 10))
scale = view.transform().m11()
view.scaleSafe(2)
self.assertAlmostEqual(view.transform().m11(), 2)
view.scaleSafe(4)
self.assertAlmostEqual(view.transform().m11(), 8)
# try to zoom in heaps
view.scaleSafe(99999999)
# assume we have hit the limit
scale = view.transform().m11()
view.scaleSafe(2)
self.assertAlmostEqual(view.transform().m11(), scale)
view.setTransform(QTransform.fromScale(1, 1))
self.assertAlmostEqual(view.transform().m11(), 1)
# test zooming out
view.scaleSafe(0.5)
self.assertAlmostEqual(view.transform().m11(), 0.5)
view.scaleSafe(0.1)
self.assertAlmostEqual(view.transform().m11(), 0.05)
# try zooming out heaps
view.scaleSafe(0.000000001)
# assume we have hit the limit
scale = view.transform().m11()
view.scaleSafe(0.5)
self.assertAlmostEqual(view.transform().m11(), scale)
def scale(self, obj, srcpos, dstpos):
cent = QgsGeometry().fromPointXY(QgsPointXY(0, 0))
srclen = cent.distance(srcpos)
dstlen = cent.distance(dstpos)
ratio = (dstlen / srclen) * 1.5 # 「1.5」は適当
obj.transform(QTransform(ratio, 0, 0, ratio, 0, 0))
return obj
def rotate(self, obj, srcpos, dstpos):
centroid = self.nearobj.centroid().asPoint()
theta = self.radian(centroid, dstpos)
sin = math.sin(theta)
cos = math.cos(theta)
obj.transform(QTransform(cos, sin, -sin, cos, 0, 0))
return obj
def trans(self, obj, srcpos, dstpos):
x = dstpos.x() - srcpos.x()
y = dstpos.y() - srcpos.y()
obj.transform(QTransform(1, 0, 0, 1, x, y))
return obj
