class MosaicPainter(Painter):
__painter_name__ = 'mosaic'
_logger = _module_logger.getChild('MosaicPainter')
##############################################
def __init__(self, painter_manager, cached_pyramid, z_value=0, status=True, name=None):
super(MosaicPainter, self).__init__(painter_manager, z_value, status, name)
self._cached_pyramid = cached_pyramid # Fixme: mosaic / pyramid ?
self._texture_cache = LruCache(constraint=1024**2) # Fixme
self._viewport_area = self._glwidget.glortho2d.viewport_area
self._shader_program = self._glwidget.shader_manager.texture_shader_program
self._tile_list = []
self._textures = []
self._texture_dict = {}
application = QtWidgets.QApplication.instance()
self._loop = asyncio.get_event_loop()
# self._loop = QEventLoop(application)
# asyncio.set_event_loop(self._loop)
# self._loop.close()
##############################################
@property
def texture_cache(self):
return self._texture_cache
##############################################
def reset(self):
self._texture_cache.reset()
##############################################
def recycle(self):
# self._logger.debug('Recycle Mosaic Cache')
# self._mosaic_cache.recycle()
# self._logger.debug('Recycle OpenGL Cache')
line = '-'*50 + '\n'
text = """
Texture Cache: recycle
before
"""
text += str(self._texture_cache)
self._texture_cache.recycle()
text += '\n after\n' + str(self._texture_cache) + '\n' + line
self._logger.debug(text)
##############################################
# def zoom_layer_changed(self, zoom_layer):
#
# pass
##############################################
def update(self):
level = self._glwidget._zoom_manager.level # Fixme
texture_cache = self._texture_cache
cached_pyramid = self._cached_pyramid
self._logger.debug('Update Mosaic Painter @{}'.format(level))
# always compute tile list
old_tile_list = self._tile_list
pyramid_level = self._cached_pyramid._pyramid[level]
# Fixme: return rotated area
# compute intersection
mosaic_interval = pyramid_level.projection_interval_to_mosaic(self._viewport_area.area)
self._tile_list = list(mosaic_interval.iter())
self._logger.debug('Viewport\n' + str(self._tile_list))
(tiles_to_release,
tiles_to_keep,
tiles_to_acquire) = split_list(old_tile_list, self._tile_list)
# Reset
self._textures = []
print(self._texture_dict)
for tile_index in tiles_to_keep:
row, column = tile_index
key = Tile.tile_key(0, level, row, column)
self._textures.append(self._texture_dict[key])
self._glwidget.update()
# Get new tiles
if tiles_to_acquire:
tasks = [asyncio.async(cached_pyramid.acquire(level, row, column))
for row, column in tiles_to_acquire]
# for task in tasks:
# task.add_done_callback(self._task_callback)
self._logger.debug('Run loop')
#!# with self._loop:
self._loop.run_until_complete(asyncio.wait(tasks))
self._logger.debug('loop done')
for task in tasks:
self._task_callback(task)
def test_history(self):
print('\nTest History Mode')
live_objects.clear()
lru_cache = LruCache(constraint=5)
for i in range(5):
lru_cache.add(Obj(i))
self.assertEqual(len(lru_cache), 5)
print(lru_cache)
obj = lru_cache.acquire(6)
self.assertIsNone(obj)
obj1 = lru_cache.acquire(1)
print(lru_cache)
self.assertEqual(obj1.key(), 1)
self.assertEqual(lru_cache._younger._obj, obj1)
self.assertEqual(lru_cache._younger._reference_counter, 1)
obj3 = lru_cache.acquire(3)
print(lru_cache)
self.assertEqual(obj3.key(), 3)
self.assertEqual(lru_cache._younger._obj, obj3)
self.assertEqual(lru_cache._younger._reference_counter, 1)
cache_element = lru_cache._cache_dict[1]
obj11 = lru_cache.acquire(1)
print(lru_cache)
self.assertEqual(cache_element._reference_counter, 2)
lru_cache.release(1)
del obj11
print(lru_cache)
self.assertEqual(cache_element._reference_counter, 1)
del cache_element
for i in range(5, 10):
lru_cache.add(Obj(i))
print(lru_cache)
self.assertEqual(len(lru_cache), 10)
objs = {}
for i in 9, 8, 7, 6:
objs[i] = lru_cache.acquire(i)
print(lru_cache)
lru_cache.recycle()
print(lru_cache)
self.assertEqual(len(lru_cache), 6)
for i in 0, 2, 4, 5:
self.assertTrue(i not in live_objects)
for i in 6, 7:
lru_cache.release(i)
del objs[i]
print(lru_cache)
lru_cache.recycle()
print(lru_cache)
self.assertEqual(len(lru_cache), 5)
for i in 7,:
self.assertTrue(i not in live_objects)
print("Cleanup")
print(objs)
del objs
del obj1
del obj3
lru_cache.reset()
print(lru_cache)
self.assertEqual(len(live_objects), 0)