Hướng dẫn how do i find the dpi of an image in python? - làm cách nào để tìm dpi của hình ảnh trong python?
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Ngoài ra đang thay đổi DPI bằng cách sử dụng (sử dụng PIL tại đây) - & nbsp; Aspirs1 Ngày 26 tháng 5 năm 2020 lúc 6:38 25 ví dụ mã Python được tìm thấy liên quan đến "Nhận DPI".Bạn có thể bỏ phiếu cho những người bạn thích hoặc bỏ phiếu cho những người bạn không thích và đi đến dự án gốc hoặc tệp nguồn bằng cách theo các liên kết trên mỗi ví dụ. get dpi". You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. ví dụ 1 def get_dpi():
"""Returns an int of current DPI for windows or None."""
if platform.system() == 'Windows':
version = get_version()
if version >= 6.2:
# Windows 8.0 is 6.2.9200
# Only run on windows 8 or higher to check high dpi monitors
user32 = ctypes.windll.user32
w_curr = user32.GetSystemMetrics(0)
user32.SetProcessDPIAware()
w_phys = user32.GetSystemMetrics(0)
curr_dpi = round(w_phys*96/w_curr, 0)
from pylab import rcParams
rcParams['figure.dpi'] = curr_dpi
return curr_dpi
else:
return None Ví dụ 2 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) Ví dụ 3 def get_dpi_group(dpi):
# type: (int) -> Density
"""Get viewport density group from given dpi.
:type dpi: int
:return: viewport density group enum
:rtype: Density
"""
if dpi in range(0, 121):
return Density.XLOW
elif dpi in range(121, 161):
return Density.LOW
elif dpi in range(161, 241):
return Density.MEDIUM
elif dpi in range(241, 321):
return Density.HIGH
elif dpi in range(321, 481):
return Density.XHIGH
elif dpi >= 481:
return Density.XXHIGH
raise AskSdkException("Unknown dpi group value: {}".format(dpi)) Ví dụ 4 def get_dpi_ratio(self, context):
"""
Gets the ratio of physical pixels to logical pixels for the given HTML
Canvas context.
This is typically 2 on a HiDPI ("Retina") display, and 1 otherwise.
"""
backing_store = (
getattr(context, "backingStorePixelRatio", 0)
or getattr(context, "webkitBackingStorePixel", 0)
or getattr(context, "mozBackingStorePixelRatio", 0)
or getattr(context, "msBackingStorePixelRatio", 0)
or getattr(context, "oBackingStorePixelRatio", 0)
or getattr(context, "backendStorePixelRatio", 0)
or 1
)
return (getattr(window, "devicePixelRatio", 0) or 1) / backing_store Ví dụ 5 def get_dpi_xy_byte(self):
"""
get the DPI on the mouse
:return: List of X, Y DPI
:rtype: list of int
"""
self.logger.debug("DBus call get_dpi_both")
driver_path = self.get_driver_path('dpi')
with open(driver_path, 'r') as driver_file:
result = driver_file.read()
dpi_x, dpi_y = [int(dpi) for dpi in result.strip().split(':')]
dpi_x = int(round(dpi_x / 255 * 6750, 2))
dpi_y = int(round(dpi_y / 255 * 6750, 2))
return [dpi_x, dpi_y] Ví dụ 6 def getImgDpi(self, im):
if isinstance(im,np.ndarray):
shape = im.shape
else:
if isinstance(im,bytes): im = BytesIO(im)
with Image.open(im) as pilimg:
try:
dpi = [float(n) for n in pilimg.info["dpi"]]
except KeyError: pass
else:
dpi = np.average(dpi)
if dpi != 72: return dpi
shape = pilimg.size
# assume DIN A4
imgDpi = round(max(shape)/11.7,-2)
sys.stderr.write("Error detecting input image DPI. "
+"Assuming %f dpi. "%imgDpi
+"Specify parameter inputDpi!\n")
return imgDpi Ví dụ 7 def get_dpi_xy(self):
"""
get the DPI on the mouse
:return: List of X, Y DPI
:rtype: list of int
"""
self.logger.debug("DBus call get_dpi_xy")
driver_path = self.get_driver_path('dpi')
with open(driver_path, 'r') as driver_file:
result = driver_file.read()
dpi = [int(dpi) for dpi in result.strip().split(':')]
return dpi Ví dụ 8 def get_dpi(self):
if self.device.has('dpi'):
return self.device.dpi
else:
return -1 Ví dụ 9 def get_dpi_cor(self):
"""
dpi_cor is currently used for linewidth-related things and
shink factor. Mutation scale is not affected by this.
"""
return self._dpi_cor Ví dụ 10 def get_max_dpi(self):
if self.device.has('dpi'):
return self.device.max_dpi
else:
return -1 Ví dụ 11 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 0Ví dụ 12 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 1Ví dụ 13 def get_dpi_cor(self):
"""
dpi_cor is currently used for linewidth-related things and
shink factor. Mutation scale is not affected by this.
"""
return self._dpi_cor Ví dụ 14 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3Ví dụ 15 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3Ví dụ 16 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3Ví dụ 17 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 6Ví dụ 18 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 7Ví dụ 19 def get_dpi_cor(self):
"""
dpi_cor is currently used for linewidth-related things and
shink factor. Mutation scale is not affected by this.
"""
return self._dpi_cor Ví dụ 20 def get_dpi_cor(self):
"""
dpi_cor is currently used for linewidth-related things and
shink factor. Mutation scale is not affected by this.
"""
return self._dpi_cor Ví dụ 21 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3Ví dụ 22
def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3Ví dụ 23 def get_dpi_group(dpi):
# type: (int) -> Density
"""Get viewport density group from given dpi.
:type dpi: int
:return: viewport density group enum
:rtype: Density
"""
if dpi in range(0, 121):
return Density.XLOW
elif dpi in range(121, 161):
return Density.LOW
elif dpi in range(161, 241):
return Density.MEDIUM
elif dpi in range(241, 321):
return Density.HIGH
elif dpi in range(321, 481):
return Density.XHIGH
elif dpi >= 481:
return Density.XXHIGH
raise AskSdkException("Unknown dpi group value: {}".format(dpi)) 2Ví dụ 24 def get_dpi_group(dpi):
# type: (int) -> Density
"""Get viewport density group from given dpi.
:type dpi: int
:return: viewport density group enum
:rtype: Density
"""
if dpi in range(0, 121):
return Density.XLOW
elif dpi in range(121, 161):
return Density.LOW
elif dpi in range(161, 241):
return Density.MEDIUM
elif dpi in range(241, 321):
return Density.HIGH
elif dpi in range(321, 481):
return Density.XHIGH
elif dpi >= 481:
return Density.XXHIGH
raise AskSdkException("Unknown dpi group value: {}".format(dpi)) 3Ví dụ 25 def get_device_dpi(self, adb_device=None):
"""Returns the dpi of a device connected to adb.
Args:
adb_device: Serial of the device to get the dpi from. If none specified,
the only device connected will be used.
Returns:
int of the device's pixel density.
"""
adb_path = self._find_binary(BuildEnvironment.ADB)
device = self.check_adb_devices(adb_device=adb_device)
adb_device_arg = self.get_adb_device_argument(adb_device=device.serial)
density, _ = self.run_subprocess(('%s %s shell getprop ro.sf.lcd_density' %
(adb_path, adb_device_arg)
),
shell=True,
capture=True)
return int(density) 3 |
