How can I specify that I want text (say an axis title) to be both bold and italic in bokeh?
This is bold: text_font_style = 'bold'
This is italic: text_font_style = 'italic'
How do I do both simultaneously? I assume this is possible because of this response on the issue tracker
Some things I have tried without success include:
text_font_style = 'bolditalic'
text_font_style = 'bold+italic'
text_font_style = ('bold', 'italic')
text_font_style = set('bold', 'italic')
# together (in a last ditch effort):
text_font_style = 'bold'
text_font_style = 'italic'
As of Bokeh 0.13 this does not appear to be possible. The FontStyle enum is currently defined as:
FontStyle = enumeration("normal", "italic", "bold")
Which means that a Bokeh text_font_style property will only accept any one on those, i.e. you can only have bold or italic, but not both. I would describe this as a simple oversight that no one has noticed until now. I think fixing this would be as simple as adding new values for the combinations, e.g. "italic bold", to the enum value (and fixing up some some related tests), so I would encourage you to submit a new feature request issue on GitHub.
Related
How can I change the font on odfpy for example, using Arial or comic sans. I've seen some examples but they only use the params "fontsize" and "fontweight". I can't find any example changing the font and the param "font" doesn't seem to work.
Section 5.15.39 in api-for-odfpy.odt lists the style.TextProperties as:
5.15.39 style.TextProperties
Requires the following attributes: No attribute is required.
Allows the following attributes: backgroundcolor, color, condition, country,
countryasian, countrycomplex, display, fontcharset, fontcharsetasian,
fontcharsetcomplex, fontfamily, fontfamilyasian, fontfamilycomplex,
fontfamilygeneric, fontfamilygenericasian, fontfamilygenericcomplex, fontname,
fontnameasian, fontnamecomplex, fontpitch, fontpitchasian, fontpitchcomplex,
fontrelief, fontsize, fontsizeasian, fontsizecomplex, fontsizerel, fontsizerelasian,
fontsizerelcomplex, fontstyle, fontstyleasian, fontstylecomplex, fontstylename,
fontstylenameasian, fontstylenamecomplex, fontvariant, fontweight, fontweightasian,
fontweightcomplex, hyphenate, hyphenationpushcharcount, hyphenationremaincharcount, language, languageasian, languagecomplex, letterkerning, letterspacing, scripttype,
textblinking, textcombine, textcombineendchar, textcombinestartchar, textemphasize,
textlinethroughcolor, textlinethroughmode, textlinethroughstyle, textlinethroughtext,
textlinethroughtextstyle, textlinethroughtype, textlinethroughwidth, textoutline,
textposition, textrotationangle, textrotationscale, textscale, textshadow,
texttransform, textunderlinecolor, textunderlinemode, textunderlinestyle,
textunderlinetype, textunderlinewidth, usewindowfontcolor.
I assume they are accessible in the same way as fontsize and fontweight, as in:
h1style.addElement(TextProperties(attributes={'fontsize':"24pt",'fontweight':"bold" }))
Although, I personally have no intention of loading software this old to test it.
Is there a way to change TextBox text color at any moment? I tried Google already; my question looks too trivial, but I am still at a loss.
TextBox methods:
: dir(matplotlib.widgets.TextBox)
Out[63]:
[
...
'active',
'begin_typing',
'connect_event',
'disconnect',
'disconnect_events',
'drawon',
'eventson',
'get_active',
'ignore',
'on_submit',
'on_text_change',
'position_cursor',
'set_active',
'set_val',
'stop_typing']
AxesWidget superclass methods:
: dir(matplotlib.widgets.AxesWidget)
Out[64]:
[
...
'active',
'connect_event',
'disconnect_events',
'drawon',
'eventson',
'get_active',
'ignore',
'set_active']
Nothing suggestive. At least, to my eye.
A partial answer only - without knowing the fuller application it isn't obvious whether this helps you. There are 2 pieces of text that you can change the color of: the label and the edit box. Below shows how to change each, once.
import matplotlib.widgets
import matplotlib.pyplot as plt
plt.figure(1)
ax = plt.subplot(111)
tb = matplotlib.widgets.TextBox(ax, "Name:", initial="Jane Doe")
tb.label.set_color('red') # label color
tb.text_disp.set_color('blue') # text inside the edit box
If you just want the label text to be different, that persists. But whenever the text inside the edit box (text_disp) is changed, it will be in black again.
This is because widget recreates the text
(by removing and then re-generating and it will be in black again.
The source for the text create method does not have any arguments that the user could modify (color, font size/weight etc) or include as a TextBox instance attribute.
You could write your own subclass that overrides this method. Or perhaps simply setting it after text has been entered is enough for you?
I'm using reportlab 3.2 with python 2.7.
I'm trying to make put some text in a rounded panel like so:
but I'm getting:
I've tried using borderRadius but it is not making the corners round:
ps_title2 = ParagraphStyle(styles['Normal'],\
fontName=helper.REG_FONT, fontSize=18, textColor=DARK_BLUE,\
leading=22, backColor=LIGHT_BLUE, borderRadius=15)
pr2 = Paragraph('Interpretation summary<br/>something<br/>another thing', ps_title2)
pr2 = Paragraph('my paragraph<br/>something<br/>another thing', ps_title2)
elements.append(pr2)
I know another approach is using a table and know how to make a table an put the info in a table but do not know how to make the table corners round.
Drawing canvas is not a good idea because I don't know the coordinates of the section because depending on the content length it would change.
Any ideas how to make the corners round?
For borderRadius to work, you need to set the following values as well:
borderWidth
borderPadding
borderColor
borderRadius
I looked through the code and figured out that when border color is not set, border radius will not work; also you need to set borderWidth and borderPadding.
Here is what works:
ps_title2 = ParagraphStyle(styles['Normal'],\
fontName=helper.REG_FONT, fontSize=18, textColor=DARK_BLUE,\
leading=22, backColor=LIGHT_BLUE, borderRadius=15, borderColor=LIGHT_BLUE, borderWidth=1, borderPadding=5)
Inspired by List of all unicode's open/close brackets? I'm trying to find a list of all unicode glyphs in a given font that are reflections of each other. First I just need to be able to test whether one glyph is a reflection of another. Below I have two different attempts (two different implementations of my render_char function) but I'm not able to identify '(' and ')' as mirror images using either one. How can I do this?
from PIL import Image,ImageDraw,ImageFont
import freetype
import numpy as np
def render_char0(c):
# Based on https://github.com/rougier/freetype-py/blob/master/examples/hello-world.py
# Needs numpy (blech) and the image comes out the inverse of the way I expect
face = freetype.Face("/Library/Fonts/Verdana.ttf")
face.set_char_size( 48*64 )
face.load_char(c)
bitmap = face.glyph.bitmap
w,h = bitmap.width, bitmap.rows
Z = np.array(bitmap.buffer, dtype=np.ubyte).reshape(h,w)
return Image.fromarray(Z, mode='L').convert('1')
def render_char1(c):
# Based on https://stackoverflow.com/a/14446201/2829764
verdana_font = ImageFont.truetype("/Library/Fonts/Verdana.ttf", 20, encoding="unic")
text_width, text_height = verdana_font.getsize(c)
canvas = Image.new('RGB', (text_width+10, text_height+10), (255, 255, 255))
draw = ImageDraw.Draw(canvas)
draw.text((5,5), c, font = verdana_font, fill = "#000000")
return canvas
for render_char in [render_char0, render_char1]:
lparen = render_char('(')
rparen = render_char(')')
mirror = lparen.transpose(Image.FLIP_LEFT_RIGHT)
mirror.show()
rparen.show()
print mirror.tobytes() == rparen.tobytes() # False
There is a text file called BidiMirroring.txt in the Unicode plain-text database with a list of all mirrored characters. That file is easy to parse by programs.
Current url is http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt
I don't think using the rendered glyphs can work reliably. There's a lot of reasons why eg. ( and ) are no exact mirror images, like spacing around the character, hinting and anti-aliasing, maybe the font is slightly slanted, or maybe the font designer has just make the two brackets a bit different etc. Other characters are rotated, rather than mirrored, like “ and ” in some fonts, and the Chinese quotation marks 「 and 」.
I think rendering is the wrong aproach. It depends on the font and wether the font knows how to render this. I heard that unicode characters have a specification for this symmetry. Maybe it is encoded in their name. "LEFT" and "RIGHT" "SUBSCRIPT". Have a look at http://xahlee.info/comp/unicode_matching_brackets.html
I have a wx.ListCtrl in REPORT mode and i use an image list to display icons which are 50x50 pixels with SetItemColumnImage. The problem now is that the text I display in the column right of the icon is less than 50 pixels high and the parts of the icons that are higher than the text are cut off.
Is there a way to tell ListCtrl to adjust the row height to the height of the icons? Last refuge would be to change the fontsize of the text, but there should be a better way.
Update:
Here is some of my code:
self.list = util.ListCtrl(nb, style=wx.LC_REPORT|
wx.LC_SINGLE_SEL|wx.LC_NO_HEADER|wx.LC_ALIGN_LEFT)
self.list.InsertColumn(0, 'Avatar', width=-1)
self.list.InsertColumn(1, 'Name', width=-1)
self.list.SetColumnWidth(0, 50)
self.imagelist = wx.ImageList(50, 50, 255, 20)
self.list.SetImageList(self.imagelist, wx.IMAGE_LIST_SMALL)
i = 0
for user in self.users:
self.list.Append(['', user['name']])
if user['avatar']:
bitmap = wx.BitmapFromImage(user['avatar'])
imageidx = self.imagelist.Add(bitmap)
self.list.SetItemColumnImage(i, 0, imageidx)
i += 1
When I remove the LC_REPORT flag the images are completely visible but they are all displayed in one row and the names aren't visible anymore.
Since the images are 50x50, I don't think they qualify as "small" any more. Try using the wx.IMAGE_LIST_NORMAL instead of wx.IMAGE_LIST_SMALL. I can't find anything about manually setting row height, so I'm guessing that's not possible. However, I did find a bug report on this topic that says it was resolved in wx2.9. Are you using 2.9?
Alternatively, you could use the UltimateListCtrl which is pure Python and if it doesn't have that ability, you can probably get it patched quickly as the author is very responsive.
Took me a couple cups of coffee to figure it out.
The call to ImageList.Add should precede ListCtrl.Append (or ListCtrl.InsertItem) in order for the ListCtrl to change the height of its rows according to the height of images in ImageList.
So instead of
for user in self.users:
self.list.Append(['', user['name']])
if user['avatar']:
bitmap = wx.BitmapFromImage(user['avatar'])
imageidx = self.imagelist.Add(bitmap)
self.list.SetItemColumnImage(i, 0, imageidx)
You should go with something like this
for user in self.users:
if user['avatar']:
bitmap = wx.BitmapFromImage(user['avatar'])
imageidx = self.imagelist.Add(bitmap)
self.list.Append(['', user['name']])
if user['avatar']:
self.list.SetItemColumnImage(i, 0, imageidx)
Which looks ugly, until you implement a default avatar:
def_avatar = 'default_avatar.jpg'
for user in self.users:
bitmap = wx.BitmapFromImage(user['avatar'] if user['avatar'] else def_avatar)
imageidx = self.imagelist.Add(bitmap)
self.list.Append(['', user['name']])
self.list.SetItemColumnImage(i, 0, imageidx)