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"""
ViewBox test cases:
* call setRange then resize; requested range must be fully visible
* lockAspect works correctly for arbitrary aspect ratio
* autoRange works correctly with aspect locked
* call setRange with aspect locked, then resize
* AutoRange with all the bells and whistles
* item moves / changes transformation / changes bounds
* pan only
* fractional range
"""
import pyqtgraph as pg
app = pg.mkQApp()
imgData = pg.np.zeros((10, 10))
imgData[0] = 3
imgData[-1] = 3
imgData[:,0] = 3
imgData[:,-1] = 3
def testLinkWithAspectLock():
global win, vb
win = pg.GraphicsWindow()
vb = win.addViewBox(name="image view")
vb.setAspectLocked()
vb.enableAutoRange(x=False, y=False)
p1 = win.addPlot(name="plot 1")
p2 = win.addPlot(name="plot 2", row=1, col=0)
win.ci.layout.setRowFixedHeight(1, 150)
win.ci.layout.setColumnFixedWidth(1, 150)
def viewsMatch():
r0 = pg.np.array(vb.viewRange())
r1 = pg.np.array(p1.vb.viewRange()[1])
r2 = pg.np.array(p2.vb.viewRange()[1])
match = (abs(r0[1]-r1) <= (abs(r1) * 0.001)).all() and (abs(r0[0]-r2) <= (abs(r2) * 0.001)).all()
return match
p1.setYLink(vb)
p2.setXLink(vb)
print "link views match:", viewsMatch()
win.show()
print "show views match:", viewsMatch()
img = pg.ImageItem(imgData)
vb.addItem(img)
vb.autoRange()
p1.plot(x=imgData.sum(axis=0), y=range(10))
p2.plot(x=range(10), y=imgData.sum(axis=1))
print "add items views match:", viewsMatch()
#p1.setAspectLocked()
#grid = pg.GridItem()
#vb.addItem(grid)
pg.QtGui.QApplication.processEvents()
pg.QtGui.QApplication.processEvents()
#win.resize(801, 600)
def testAspectLock():
global win, vb
win = pg.GraphicsWindow()
vb = win.addViewBox(name="image view")
vb.setAspectLocked()
img = pg.ImageItem(imgData)
vb.addItem(img)
#app.processEvents()
#print "init views match:", viewsMatch()
#p2.setYRange(-300, 300)
#print "setRange views match:", viewsMatch()
#app.processEvents()
#print "setRange views match (after update):", viewsMatch()
#print "--lock aspect--"
#p1.setAspectLocked(True)
#print "lockAspect views match:", viewsMatch()
#p2.setYRange(-200, 200)
#print "setRange views match:", viewsMatch()
#app.processEvents()
#print "setRange views match (after update):", viewsMatch()
#win.resize(100, 600)
#app.processEvents()
#vb.setRange(xRange=[-10, 10], padding=0)
#app.processEvents()
#win.resize(600, 100)
#app.processEvents()
#print vb.viewRange()
if __name__ == '__main__':
testLinkWithAspectLock()
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