I'm trying to build a PDF from user-generated content and I have a chunk of information that should be grouped together. I know of the group method to make sure text all gets rendered together, but this doesn't seem to work with a mix of text and images. Is there something that can do this with Prawn, or do I need to try to calculate cursor position and manually linebreak?
Edit: For illustration of what I'm looking to do:
pdf = PDF::Document.new
20.times do
pdf.group do
pdf.text "Something"
pdf.image "path/to/image.jpg"
pdf.text Time.now.to_s
end
end
And I would expect to not ever have "Something" on one page and the image on the next, but that is what I see. Is there some way I can achieve what I want?
Okay, I've figured it out. Prawn does not seem to take the image height into account when grouping, but you can hack your way around it:
pdf.group do
pdf.text "Best regards, (...)"
pdf.image "#{Rails.root}/vendor/signature.jpg", {
:height => 30,
:at => [0, pdf.y.to_i - #bottom_margin]
}
pdf.move_down(35)
pdf.text " "
end
The trick is to use absolute positioning for the image, and move the text cursor down manually.
Related
I want to retrieve hidden text when the visibiility attribute is hidden:
<div id = "tt52433002" class="yui-module yui-overlay yui-tt yui-overlay-hidden" style="z-index: 2; visibility: hidden;">
<div class="bd">Associated with the domain : testci20160503105556.com</div>
</div>
I tried:
browser.hidden(:class, 'bd').text
and
browser.hidden(:class, 'bd').value
But I get this error:
"unable to locate element, using {:class=>"bd", :tag_name=>"input", :type=>"hidden"}"
Watir is designed to act like a user. So if a user can not see the text in an element, then Watir will not return the text of the element.
Also, the element you are looking for is a div not a hidden.
If you need the text you can do:
browser.div(class: 'bd').inner_html
which makes a JavaScript call to provide the result.
This works:
browser.div.attribute_value('id') => tt52433002
as does this:
browser.div(class: 'bd').inner_html[/testci\d{14}/] => testci20160503105556
First things first. The error says that Watir cannot find an element using the criteria you specified. That means either that no such thing exists anywhere in the DOM, or that it might be inside a frame.
Since the element you want is a div, then you should be using the .div method to access it
browser.div(:class => 'bd') #finds first matching div
A potential second problem could occur if that classname is not very unique. Unless you specify an additional parameter, such as index, or perhaps a portion of the text contained by the div, you may not find the div you are looking for. A fast debugging trick (I like to do it from IRB) is to get a collection of matching divs and check the size
div_count = browser.divs(:class => 'bd').size
puts "there are #{divcount} divs of class bd in the dom"
If the count is anything more than 1, then you likely need to change how you are selecting it to ensure you get the right one. for example
browser.div(:class => 'bd', :text => /Associated with the domain/)
If the count is zero, then check for frames
frame_count = browser.frames.size
iframe_count = browser.iframes.size
If there are frames you will have to tell watir to look inside the frame for the div, if more than one frame then be sure you specify the right one
browser.frame.div(:class => 'bd') #looks for div inside first frame
Once you are sure you have the right div, then you ought to be able to use a method like .text or as in another answer .inner_html to get the contents of the div.
I'm using the Axlsx gem to create an excel file and I'd like to add an image. I am currently able to add an image but it seems to add the image in a way that makes it float on top of other content.
I'd like it to exist within a cell. Is this possible?
It is an old question but we never know.
There is an answer in this post : Adding image to Excel file generated by Axlsx.?
You can specify the cell from which you want to put the image by using image.start_at
sheet.add_image(:image_src => img, :noSelect => true, :noMove => true, :hyperlink=>"http://axlsx.blogspot.com") do |image|
image.width = 7
image.height = 6
image.hyperlink.tooltip = "Labeled Link"
image.start_at 2, 2
end
HTH
I make a dozen of plots with Gnuplot on Mac via ruby-gnuplot. If I re-run my ruby script, then the number of open windows with the plots doubles. If I could just output all these plots in a PDF opened in Preview, then the file would be automatically updated after every re-run and I don't need to bother closing the numerous windows.
Currently I can achieve this only with one plot per PDF-file:
Gnuplot.open do |gp|
Gnuplot::Plot.new(gp) do |plot|
plot.arbitrary_lines << "set terminal pdf \n set output 'figures.pdf'"
# ...
end
end
How can I make a single PDF with all my figures by Gnuplot?
Hmm, at least on gnuplot for UN*x, multipage output for postscript and PDF always was the default - as long as you don't either change the terminal type nor reassign the output file, everything you plot ends up on a new page.
I.e. you do:
set terminal pdf
set output "multipageplot.pdf"
plot x, x*x
plot sin(x), cos(x)
set output ""
and you end up with two pages in the PDF file, one containing line/parabola, the other sine/cosine.
To clarify: The important thing is to issue all the plot commands in sequence, without changing the output file nor changing the terminal type. Gnuplot won't append to an existing PDF file.
I make thousands of plots with ruby-gnuplot and use a gem called prawn to compile them into a pdf. The following is a code snippet using prawn, that includes some useful features:
require 'prawn'
def create_pdf
toy_catalogue = #toy_catalogue
full_output_filename ||= "#{output_path}/#{pre-specified_filename_string}"
Prawn::Document.generate(full_output_filename, :page_layout => :portrait, :margin => 5, :skip_page_creation => false, :page_size => [595, 1000]) do
toy_catalogue.each do |toy|
start_new_page
image toy[:plan_view], :at => [0,900], :width => 580
image toy[:front_view], :at => [0, 500], :width => 585
font_size(20) { draw_text toy[:name], :at => [5, 920] }
draw_text "production_date = #{toy[:date]}", :at => [420, 930]
end
end
end
That should be easy enough to adapt to your purposes.
I am trying to make text appear on a FXCanvas. when I use this code:
def score_box(event)
FXDCWindow.new(#canvas) do |dc|
dc.drawText(640, 450, #score)
end
end
but it gives me an error saying I need to select a font, how do I do this? or could you provide anyway to make text on a canvas? Thanks
-bipolarpants
You need to select an FXFont object into the device context (dc), e.g.
FXDCWindow.new(#canvas) do |dc|
font = FXFont.new(...)
font.create
dc.font = font
dc.drawText(640, 450, #score)
end
Shoes is very handy GUI tool. I would like to do a search form so that a user is helped to navigate through larger texts for editing. For this I need to move the cursor within an editbox element.
Here you'll see my question in code:
Shoes.app do
stack do
p=para "After pressing 'search' a question will arise"
box=edit_box
box.text="One\nof\nthe\nmost\nstriking\ndifferences\nbetween\na\ncat\nand\na\nlie\nis\nthat\na\ncat\nhas\nonly\nnine lives."
flow :margin_top=>0.1 do
search=edit_line
button("search") do
pos=box.text.index search.text
y = box.text[0..pos].split.size-1 if pos
if not y.nil?
#For example if you searched "only" then
#cursor should jump/scroll to line 17.
#
#Anything there for cursor positioning,
#like: box.cursor=[0,y]
#
p.text="How can I move editbox's cursor in line #{y+1}?"
else
alert "'#{search.text}' not found"
end
end
end
end
end
Is there is any way to change cursor's position of an editbox? If not, do you know an alternative way of implementation?
Unfortunately, Shoes doesn't seem to provide any way to do that. These are the only methods defined on EditBox (it inherits from Native, which has several methods, but again, none to reposition the cursor).
rb_define_method(cEditBox, "text", CASTHOOK(shoes_edit_box_get_text), 0);
rb_define_method(cEditBox, "text=", CASTHOOK(shoes_edit_box_set_text), 1);
rb_define_method(cEditBox, "draw", CASTHOOK(shoes_edit_box_draw), 2);
rb_define_method(cEditBox, "change", CASTHOOK(shoes_control_change), -1);
http://github.com/why/shoes/blob/cea39a8bf9a5b7057b1824a9fab868d1f8609d69/shoes/ruby.c