def render_as_pixbuf(surface, *rect, **kwargs):
"""Renders a surface within a given rectangle as a GdkPixbuf
:param lib.surface.TileBlittable surface: source surface
:param *rect: x, y, w, h positional args defining the render rectangle
:param **kwargs: Keyword args are passed to ``surface.blit_tile_into()``
:rtype: GdkPixbuf
:raises: lib.errors.AllocationError
:raises: MemoryError
The keyword args ``alpha``, ``mipmap_level``, and ``feedback_cb`` are
consumed here and removed from `**kwargs` before it is passed to the
Surface's `blit_tile_into()`.
"""
alpha = kwargs.pop('alpha', False)
mipmap_level = kwargs.pop('mipmap_level', 0)
feedback_cb = kwargs.pop('feedback_cb', None)
if not rect:
rect = surface.get_bbox()
x, y, w, h, = rect
s = Surface(x, y, w, h)
tn = 0
for tx, ty in s.get_tiles():
with s.tile_request(tx, ty, readonly=False) as dst:
surface.blit_tile_into(dst, alpha, tx, ty,
mipmap_level=mipmap_level,
**kwargs)
if feedback_cb and tn % lib.surface.TILES_PER_CALLBACK == 0:
feedback_cb()
tn += 1
return s.pixbuf
def render_as_pixbuf(surface,
x=None,
y=None,
w=None,
h=None,
alpha=False,
mipmap_level=0,
progress=None,
**kwargs):
"""Renders a surface within a given rectangle as a GdkPixbuf
:param lib.surface.TileBlittable surface: source surface
:param int x:
:patrm int y:
:param int w:
:param int h: coords of the rendering rectangle. Must all be set.
:param bool alpha:
:param int mipmap_level:
:param progress: Unsized UI progress feedback obj.
:type progress: lib.feedback.Progress or None
:param **kwargs: Keyword args are passed to ``surface.blit_tile_into()``
:rtype: GdkPixbuf
:raises: lib.errors.AllocationError
:raises: MemoryError
"""
if None in (x, y, w, h):
x, y, w, h = surface.get_bbox()
s = Surface(x, y, w, h)
s_tiles = list(s.get_tiles())
if not progress:
progress = lib.feedback.Progress()
progress.items = len(s_tiles)
tn = 0
for tx, ty in s_tiles:
with s.tile_request(tx, ty, readonly=False) as dst:
surface.blit_tile_into(dst,
alpha,
tx,
ty,
mipmap_level=mipmap_level,
**kwargs)
if tn % lib.surface.TILES_PER_CALLBACK == 0:
progress.completed(tn)
tn += 1
progress.close()
return s.pixbuf
def __init__(self,
surface,
filename,
rect,
alpha,
single_tile_pattern=False,
save_srgb_chunks=False,
**kwargs):
super(PNGFileUpdateTask, self).__init__()
self._final_filename = filename
# Sizes. Save at least one tile to allow empty docs to be written
if not rect:
rect = surface.get_bbox()
x, y, w, h = rect
if w == 0 or h == 0:
x, y, w, h = (0, 0, 1, 1)
rect = (x, y, w, h)
# Snapshot and recreate
clone_surface = Surface(
looped=surface.looped,
looped_size=surface.looped_size,
)
clone_surface.load_snapshot(surface.save_snapshot())
# Open a tempfile for writing
tmp_filename = filename + ".tmp"
if os.path.exists(tmp_filename):
os.unlink(tmp_filename)
tmp_fp = open(tmp_filename, "wb")
self._png_writer = mypaintlib.ProgressivePNGWriter(
tmp_fp,
w,
h,
alpha,
save_srgb_chunks,
)
self._tmp_filename = tmp_filename
self._tmp_fp = tmp_fp
# What to write
self._strips_iter = lib.surface.scanline_strips_iter(
clone_surface,
rect,
alpha=alpha,
single_tile_pattern=single_tile_pattern,
**kwargs)
logger.debug("autosave: scheduled update of %r", self._final_filename)
def __init__(self, surface, filename, rect, alpha,
single_tile_pattern=False,
save_srgb_chunks=False,
**kwargs):
super(PNGFileUpdateTask, self).__init__()
self._final_filename = filename
# Sizes. Save at least one tile to allow empty docs to be written
if not rect:
rect = surface.get_bbox()
x, y, w, h = rect
if w == 0 or h == 0:
x, y, w, h = (0, 0, 1, 1)
rect = (x, y, w, h)
# Snapshot and recreate
clone_surface = Surface(
looped=surface.looped,
looped_size=surface.looped_size,
)
clone_surface.load_snapshot(surface.save_snapshot())
# Open a tempfile for writing
tmp_filename = filename + ".tmp"
if os.path.exists(tmp_filename):
os.unlink(tmp_filename)
tmp_fp = open(tmp_filename, "wb")
self._png_writer = mypaintlib.ProgressivePNGWriter(
tmp_fp,
w, h,
alpha,
save_srgb_chunks,
)
self._tmp_filename = tmp_filename
self._tmp_fp = tmp_fp
# What to write
self._strips_iter = lib.surface.scanline_strips_iter(
clone_surface, rect, alpha=alpha,
single_tile_pattern=single_tile_pattern,
**kwargs
)
logger.debug("autosave: scheduled update of %r", self._final_filename)
def render_as_pixbuf(surface, x=None, y=None, w=None, h=None,
alpha=False, mipmap_level=0,
progress=None,
**kwargs):
"""Renders a surface within a given rectangle as a GdkPixbuf
:param lib.surface.TileBlittable surface: source surface
:param int x:
:patrm int y:
:param int w:
:param int h: coords of the rendering rectangle. Must all be set.
:param bool alpha:
:param int mipmap_level:
:param progress: Unsized UI progress feedback obj.
:type progress: lib.feedback.Progress or None
:param **kwargs: Keyword args are passed to ``surface.blit_tile_into()``
:rtype: GdkPixbuf
:raises: lib.errors.AllocationError
:raises: MemoryError
"""
if None in (x, y, w, h):
x, y, w, h = surface.get_bbox()
s = Surface(x, y, w, h)
s_tiles = list(s.get_tiles())
if not progress:
progress = lib.feedback.Progress()
progress.items = len(s_tiles)
tn = 0
for tx, ty in s_tiles:
with s.tile_request(tx, ty, readonly=False) as dst:
surface.blit_tile_into(dst, alpha, tx, ty,
mipmap_level=mipmap_level,
**kwargs)
if tn % lib.surface.TILES_PER_CALLBACK == 0:
progress.completed(tn)
tn += 1
progress.close()
return s.pixbuf
