class MangaScroller(object):
def __init__(self, root, view_settings=None):
try:
self.page_list = PageList(root)
if view_settings is None:
view_settings = ViewSettings()
self.view_settings = view_settings
self.cursor = PageCursor(self.page_list, view_settings)
except EmptyMangaException:
print "Warning: empty manga"
self.page_list = EmptyPageList()
# TODO: use the dirty attribute after paint to indicate
# if a refresh is still needed
self.dirty = True
def change_chapter(self, path):
self.cursor.index = self.page_list.reset_to_path(path)
self.cursor.pixel = 0
def scroll_down(self, step=100):
self.move_cursor(step)
def scroll_up(self, step=100):
self.move_cursor(-step)
def move_cursor(self, amount):
self.cursor.move(amount)
# TODO: This will need a big (good :) rewrite!
# TODO: should mark whether or not some space is left unrendered so that we
# know when we need to render images when they load
def paint_using(self, painter):
"""
Render scroller using painter
@param painter: qt painter
"""
# First, load any unloaded image
for i in range(self.page_list.length()):
self.page_list.page_at(i).load() # this is non-blocking
findex, loaded = get_loaded_context(self.page_list, self.cursor.index)
index = self.cursor.index - findex
limit = index + 3 # TEMP
pages = loaded[index:limit]
frames = [p.get_frame(self.view_settings) for p in pages]
if len(frames) == 0: return 0
# transorming the image according to view_settings
y = -transformed_y_coord(self.view_settings, pages[0], self.cursor.pixel)
fstrip.paint_frames(painter, frames, y)
def __init__(self, root, view_settings=None):
try:
self.page_list = PageList(root)
if view_settings is None:
view_settings = ViewSettings()
self.view_settings = view_settings
self.cursor = PageCursor(self.page_list, view_settings)
except EmptyMangaException:
print "Warning: empty manga"
self.page_list = EmptyPageList()
# TODO: use the dirty attribute after paint to indicate
# if a refresh is still needed
self.dirty = True
