Re: [Iup-users] Images with coordinates. How-to?

Sat, 23 May 2015 13:42:17 -0700 





 A IupDialog is a system window. The Notepad window and the Mathlab  
window are examples. In every graphical user interface toolkit this is  
>the main element where others elements are placed.


So, I can think of it as equivalent to the handle of a Matlab Fig?

Can a IupDialog have more than one IupPlot visible at the same time? Who  
would be the containers of those IupPlots?





 What is the result of your test code now? Does at least your data set  
is ploted?



Yes it does (I meant that when I said before that "it worked"). But I face  
a lot of new issues.
I found about IupImageFromImImage() but it crashes IUP when I use it with  
my manually constructed imImages, which work well when I use them as  
background of cvCanvas.
From the crashing error messages in Julia I deduce that the problem comes  
from this line (#464) in  Ihandle* IupImageFromImImage(const imImage*  
image)


transp_index = imImageGetAttribute(image, "TransparencyIndex", NULL, NULL);


In fact the "image" I create have no such attribute. And even when I try  
to set it with   imImageSetAttribute() I get this strange error


imImageSetAttribute(image,"TransparencyIndex",0,21901,C_NULL)
ERROR: DivideError: integer division error

Ideally the IupPlot should accept both iIupImages and imImages


Scuri
Em 23/05/2015 13:25, "Joaquim Luis" <[email protected]> escreveu:

António,


I guess that your code should work. I basically had the same in my  
working version pasted bellow. But that doesn't address my main  
>>questions that i raised in previous message on what are dialogs, how  
to put plots side by side, etc...I'm afraid that without understanding  
those I'll be hitting my head on the wall next time I try to do  
something different (well, I'm actually there >>already).


Thanks

Joaquim

using IUP
using IUP_IM
using IUP_CD

function axes()

IupOpen() #Initializes IUP

IupPlotOpen(); # init IupPlot library

# create plot
plot = IupPlot()
hbox = IupHbox(plot);
IupSetAttribute(hbox, "MARGIN", "10x10");
IupSetAttribute(hbox, "GAP", "10");

dlg = IupDialog(hbox);

IupSetAttributes(dlg, "SIZE=500x240" );
IupSetAttribute(dlg, "TITLE", "IupPlot Example");

IupSetAttribute(plot, "TITLE", "AutoScale")
IupSetAttribute(plot, "MARGINTOP", "40")
IupSetAttribute(plot, "MARGINLEFT", "40")
IupSetAttribute(plot, "MARGINBOTTOM", "50")
IupSetAttribute(plot, "TITLEFONTSIZE", "16")
IupSetAttribute(plot, "AXS_XLABEL", "gnu (Foo)")
IupSetAttribute(plot, "AXS_YLABEL", "Space (m^3)")
IupSetAttribute(plot, "AXS_YFONTSIZE", "7")
IupSetAttribute(plot, "AXS_YTICKFONTSIZE", "7")
#IupSetAttribute(plot, "LEGENDSHOW", "YES");
IupSetAttribute(plot, "AXS_XFONTSIZE", "10");
IupSetAttribute(plot, "AXS_YFONTSIZE", "10");
IupSetAttribute(plot, "AXS_XLABELCENTERED", "NO");
IupSetAttribute(plot, "AXS_YLABELCENTERED", "NO");
IupSetAttribute(plot, "AXS_XARROW", "NO");
IupSetAttribute(plot, "VIEWPORTSQUARE")

error = pointer([0])
im = imFileImageLoadBitmap("V://Capture.PNG", 0, error)
error = unsafe_load(error)
image = IupImageFromImImage(im)

#image = IupLoadImage("V://Capture.PNG")
IupSetAttributeHandle(plot, "BACKIMAGE", image)
IupSetAttribute(plot, "BACKIMAGE_XMIN", "-100");
IupSetAttribute(plot, "BACKIMAGE_XMAX", "150");
IupSetAttribute(plot, "BACKIMAGE_YMIN", "-2");
IupSetAttribute(plot, "BACKIMAGE_YMAX", "2");

IupPlotBegin(plot, 0)
IupPlotAdd(plot, -100., -2.)
IupPlotAdd(plot, 150., 2.)
IupPlotEnd(plot)
IupSetAttribute(plot, "DS_MODE", "MARK")
IupSetAttribute(plot, "DS_MARKSIZE", "1")

IupShowXY(dlg, IUP_CENTER, IUP_CENTER);

IupMainLoop()
IupClose()

return

end



 I think it should be this (not sure, never programmed in Julia):

IupOpen();
IupPlotOpen(); # init IupPlot library

# create plots
plot = IupPlot()

# dialog
hbox = IupHbox(plot, C_NULL);
IupSetAttribute(hbox, "MARGIN", "4x4");
IupSetAttribute(hbox, "GAP", "10");

dlg = IupDialog(hbox);
IupSetAttributes(dlg, "SIZE=500x240" );
IupSetAttribute(dlg, "TITLE", "IupPlot Example");

InitPlots(); # It must be able to be done independent of dialog Mapping

IupShowXY(dlg, IUP_CENTER, IUP_CENTER);
IupSetAttribute(dlg, "SIZE", C_NULL);

IupMainLoop()
IupClose()


 It this showing a dialog with at least a white canvas in the  
center surrounded by 4x4 margins?



Best,

Scuri



On Sat, May 23, 2015 at 12:04 PM, Joaquim Luis <[email protected]>  
wrote:

No, the vboxr was NULL terminated (see line:  vboxr[2] = C_NULL #  
mark end of vector) and I kept the vector out of pure laziness. It  
>>>>turned out that this didn't work


plot = IupPlot()
dlg = IupDialog(hbox);


because I had an issue on the porting of IupPlot that returned a  
pointer to int instead of a pointer to Ihandle (a void *). When I  
fixed this >>>>it started to work.
But my basic incomprehension of what a dialog is still remains. I  
know the doc says


"... It manages user interaction with the interface elements"


but sorry, this too vague for me. Can I think of it as a similar to  
the Matlab handle to a Figure?
Why can't I create a dialog by calling it on a IupCanvas. That is,  
why doesn't this work?


dlg = IupDialog( IupCanvas())


And a IupPlot object, can I think of it as a ML equivalent to an axes  
handle? How can I put more than one IupPlot plot side by side?



Well, sorry. Lots of questions but I still don't understand the  
"mechanics of the IUP ensemble"



Joaquim




 Hi,


 I think there is a misunderstanding about the vbox terminator. When  
you pass a list of controls for a box you end that list with a null,  
>>>>>for instance vbox(but1, but2, null).



 This is not what you are doing. First, if you don't want a tabs,  
remove it from your test. Make it simpler. You also don't need an  
array >>>>>of plots, you will use just one. Eliminate that too.


 Then we start from there.

 And send me the full Julia file so I can also see what you are  
doing in InitPlot.


Best,
Scuri
Em 22/05/2015 16:55, "Joaquim Luis" <[email protected]> escreveu:

Thanks,


I managed to make it work in a stripped down version of the pplot  
example.But now I don't want to plot it in a Tab, I just want a  
simple plot with an image. I understand that the solution must be  
in what is used >>>>>>to generate the  IupDialog() bellow, but  
everything else that I try just brings an empty figure.
This is so painful by trial and error. I guess that I simply don't  
understand what a dialog (the return of  IupDialog(...)) is and the  
>>>>>>importance of its input argument.


Joaquim


IupControlsOpen(); # init the addicional controls library (we use  
IupTabs)

IupPlotOpen(); # init IupPlot library

# create plots
plot[1] = IupPlot()

# right panel: tabs with plots
vboxr[1] = IupVbox(plot[1]); # each plot a tab
s = @sprintf("Plot %d", 1)
IupSetAttribute(vboxr[1], "TABTITLE", s); # name each tab
vboxr[2] = C_NULL # mark end of vector

tabs = IupTabsv(pointer(vboxr)) # create tabs

# dialog
hbox = IupHbox(tabs);
IupSetAttribute(hbox, "MARGIN", "4x4");
IupSetAttribute(hbox, "GAP", "10");

dlg = IupDialog(hbox);
IupSetAttributes(dlg, "SIZE=500x240" );
IupSetAttribute(dlg, "TITLE", "IupPlot Example");


InitPlots(); # It must be able to be done independent of dialog  
Mapping


IupShowXY(dlg, IUP_CENTER, IUP_CENTER);
IupSetAttribute(dlg, "SIZE", C_NULL);

IupMainLoop()
IupClose()



 Hi,


 No, only IupImage is accepted as an image handle in a control. So  
instead of using imFileImageLoadBitmap, use IupLoadImage. It  
>>>>>>>will use imFileImageLoadBitmap internally and it will  
return an IupImage Ihandle* so you can use it in  
IupSetAttributeHandle.



Best,

Scuri



On Wed, May 20, 2015 at 11:24 AM, Joaquim Luis <[email protected]>  
wrote:

Hi,

How can I plot an image in an axes with coordinates?
I tried with IupPlot and attribute "BACKIMAGE", as in (in Julia)

       error = pointer([0])
       image = imFileImageLoadBitmap("V://Capture.PNG", 0, error)

       IupSetAttributeHandle(plot[1], "BACKIMAGE",  
convert(Ptr{Void}, image));



but get crashes from the C side saying


Exception: EXCEPTION_ACCESS_VIOLATION at 0x7ffdca48afd2 --  
iupTableGet at

C:\programs\compa_libs\iup\iup.DLL (unknown line)
iupTableGet at C:\programs\compa_libs\iup\iup.DLL (unknown line)

cdIupDrawImage at C:\programs\compa_libs\iup\iupcd.dll (unknown  
line)

...

Thanks

Joaquim

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