def __call__(self,
p,
text,
color,
size=10,
font_family=0,
italic=False,
bold=False,
halign=0):
from gamera.core import Dim, RGB, ONEBIT, Image
from gamera.plugins import string_io
try:
import wx
except ImportError:
raise RuntimeError("Drawing text requires wxPython.")
try:
dc = wx.MemoryDC()
except wx._core.PyNoAppError:
app = wx.App()
dc = wx.MemoryDC()
if font_family < 0 or font_family > 2:
raise ValueError("font_family must be in range 0-2.")
font_family = [wx.ROMAN, wx.SWISS, wx.MODERN][font_family]
italic = (italic and wx.ITALIC) or wx.NORMAL
bold = (bold and wx.BOLD) or wx.NORMAL
if type(text) == str:
encoding = wx.FONTENCODING_SYSTEM
elif type(text) == unicode:
encoding = wx.FONTENCODING_UNICODE
else:
raise ValueError("text must be a string or unicode string.")
font = wx.Font(size, font_family, italic, bold, encoding=encoding)
font.SetPixelSize(wx.Size(size * 2, size * 2))
dc.SetFont(font)
w, h = dc.GetTextExtent(text)
# Do the actual drawing
bmp = wx.EmptyBitmap(w, h, -1)
dc.SelectObject(bmp)
dc.SetPen(wx.TRANSPARENT_PEN)
dc.SetBrush(wx.WHITE_BRUSH)
dc.DrawRectangle(0, 0, w, h)
dc.SetBrush(wx.BLACK_BRUSH)
dc.DrawText(text, 0, 0)
img = bmp.ConvertToImage()
img_str = img.GetData()
text_image = string_io._from_raw_string((0, 0), Dim(w, h), RGB, 0,
img_str)
text_image = text_image.to_onebit()
if halign == 1:
p = (p[0] - w / 2, p[1])
elif halign == 2:
p = (p[0] - w, p[1])
ul = (max(p[0], self.ul_x), max(p[1], self.ul_y))
lr = (min(p[0] + w, self.lr_x), min(p[1] + h, self.lr_y))
w = lr[0] - ul[0]
h = lr[1] - ul[1]
if w < 0 or h < 0:
return
text_image = text_image.subimage(
(max(self.ul_x - p[0], 0), max(self.ul_y - p[1], 0)), Dim(w, h))
if self.data.pixel_type == ONEBIT:
subimage = self.subimage(ul, Dim(w, h))
if color:
subimage.or_image(text_image, in_place=True)
else:
text_image.invert()
subimage.and_image(text_image, in_place=True)
elif self.data.pixel_type == RGB:
subimage = Image(
(max(ul[0] - self.ul_x, p[0]), max(ul[1] - self.ul_y, p[1])),
Dim(w, h), ONEBIT)
subimage.or_image(text_image, in_place=True)
self.highlight(subimage, color)
def __call__(self, p, text, color, size=10, font_family=0,
italic=False, bold=False, halign=0):
from gamera.core import Dim, RGB, ONEBIT, Image
from gamera.plugins import string_io
try:
import wx
from gamera.gui import compat_wx
except ImportError:
raise RuntimeError("Drawing text requires wxPython.")
try:
dc = wx.MemoryDC()
except wx._core.PyNoAppError:
app = wx.App()
dc = wx.MemoryDC()
if font_family < 0 or font_family > 2:
raise ValueError("font_family must be in range 0-2.")
font_family = [wx.ROMAN, wx.SWISS, wx.MODERN][font_family]
italic = (italic and wx.ITALIC) or wx.NORMAL
bold = (bold and wx.BOLD) or wx.NORMAL
if type(text) == str:
encoding = wx.FONTENCODING_SYSTEM
elif type(text) == unicode:
encoding = wx.FONTENCODING_UNICODE
else:
raise ValueError("text must be a string or unicode string.")
font = wx.Font(size, font_family, italic, bold,
encoding = encoding)
font.SetPixelSize(wx.Size(size * 2, size * 2))
dc.SetFont(font)
w, h = dc.GetTextExtent(text)
# Do the actual drawing
bmp = compat_wx.create_empty_bitmap(w, h, -1)
dc.SelectObject(bmp)
dc.SetPen(wx.TRANSPARENT_PEN)
dc.SetBrush(wx.WHITE_BRUSH)
dc.DrawRectangle(0, 0, w, h)
dc.SetBrush(wx.BLACK_BRUSH)
dc.DrawText(text, 0, 0)
img = bmp.ConvertToImage()
img_str = img.GetData()
text_image = string_io._from_raw_string(
(0, 0), Dim(w, h), RGB, 0, img_str)
text_image = text_image.to_onebit()
if halign == 1:
p = (p[0] - w / 2, p[1])
elif halign == 2:
p = (p[0] - w, p[1])
ul = (max(p[0], self.ul_x), max(p[1], self.ul_y))
lr = (min(p[0] + w, self.lr_x), min(p[1] + h, self.lr_y))
w = lr[0] - ul[0]
h = lr[1] - ul[1]
if w < 0 or h < 0:
return
text_image = text_image.subimage(
(max(self.ul_x - p[0], 0), max(self.ul_y - p[1], 0)),
Dim(w, h))
if self.data.pixel_type == ONEBIT:
subimage = self.subimage(ul, Dim(w, h))
if color:
subimage.or_image(text_image, in_place=True)
else:
text_image.invert()
subimage.and_image(text_image, in_place=True)
elif self.data.pixel_type == RGB:
subimage = Image((max(ul[0] - self.ul_x, p[0]),
max(ul[1] - self.ul_y, p[1])),
Dim(w, h), ONEBIT)
subimage.or_image(text_image, in_place=True)
self.highlight(subimage, color)
