Hi,

I think SetVirtualSize is what solved it for me.

Regards,

Philippe

Monday 20 June 2005 03:13 pm, Matt Kubilus wrote:
I have a wxScrolledWindow I want to get the device context of the
entire area of the window. When I blit the windows dc onto a bitmap,
however, I get a cut off version of the window exactaly how it appears
on the screen.

How can I get a picture of the entire area of a wxScrolledWindow?
--
Thanks,
Matt K

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Tried SetVirtualSize for the frame. I still get a cutoff bitmap from
the dc of the window however. How do I get the entire window data
into the bitmap?

Thanks,
Matt

6/20/05, Philippe C. Martin <philippecmartin (AT) sbcglobal (DOT) netwrote:
Hi,

I think SetVirtualSize is what solved it for me.

Regards,

Philippe

Monday 20 June 2005 03:13 pm, Matt Kubilus wrote:
I have a wxScrolledWindow I want to get the device context of the
entire area of the window. When I blit the windows dc onto a bitmap,
however, I get a cut off version of the window exactaly how it appears
on the screen.

How can I get a picture of the entire area of a wxScrolledWindow?
--
Thanks,
Matt K

To unsubscribe, e-mail: wxPython-users-unsubscribe (AT) lists (DOT) wxwidgets.org
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I SetVirtualSize on the ScrolledWindow:

def Set_Plot_Size(self, p_one_student):
if False == p_one_student:
l_num_students = len (selfm_data.Get_Students(selfm_class) )

l_x = (300) + l_num_students * 30
l_y = (300) + l_num_students * 10
else:
l_x = 400
l_y = 400
print (l_x,l_y)

((l_x,l_y))
self.client = PlotCanvas(self._m_report_windows, id = -1,
pos=wx.DefaultPosition,
size=(l_x,l_y), style=wx.RESIZE_BRDER )
#define the function for drawing pointLabels
self.client.SetPointLabelFunc(self.DrawPointLabel)

Regards,

Philippe

Monday 20 June 2005 06:19 pm, Matt Kubilus wrote:
Tried SetVirtualSize for the frame. I still get a cutoff bitmap from
the dc of the window however. How do I get the entire window data
into the bitmap?

Thanks,
Matt

6/20/05, Philippe C. Martin <philippecmartin (AT) sbcglobal (DOT) netwrote:
Hi,

I think SetVirtualSize is what solved it for me.

Regards,

Philippe

Monday 20 June 2005 03:13 pm, Matt Kubilus wrote:
I have a wxScrolledWindow I want to get the device context of the
entire area of the window. When I blit the windows dc onto a bitmap,
however, I get a cut off version of the window exactaly how it appears
on the screen.

How can I get a picture of the entire area of a wxScrolledWindow?
--
Thanks,
Matt K

To unsubscribe, e-mail: wxPython-users-unsubscribe (AT) lists (DOT) wxwidgets.org
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wxPython-users-help (AT) lists (DOT) wxwidgets.org

Thanks, but that won't work since I am trying to get a picture of the
actual widgets on a scrolled window, text controls and such. There
may not be a direct way so I created this function. It scrolls
through the window and puts together a bitmap for saving, printing,
whatever. It's a little rough around the edges but here you have it:

#>

def getBitmapFromScrolledPanel(panel):
xScroll,yScroll = panel.GetScrollPixelsPerUnit()
panel.SetScrollRate(1,1)

xSource = ySource = xDest = yDest = 0.0

visibleWidth, visibleHeight = panel.GetSizeTuple()
virtualWidth, virtualHeight = panel.GetVirtualSize()
bm = wx.EmptyBitmap(virtualWidth, virtualHeight)
tempDC = wx.MemoryDC()
tempDC.S(bm)

visibleWidth = visibleWidth - 20
visibleHeight = visibleHeight - 20

xUnits = visibleWidth
yUnits = visibleHeight

print "XUNITS: " + str(xUnits)
print "YUNITS: " + str(yUnits)

xSegments = int(ceil(float(virtualWidth)/float(xUnits)))
ySegments = int(ceil(float(virtualHeight)/float(yUnits)))

print "XSEGMENTS: " + str(xSegments)
print "YSEGMENTS: " + str(ySegments)

for x in range(xSegments):
if ((x * xUnits) + xUnits) < virtualWidth:
xDest = xUnits * x
else:
xDest = xDest + (virtualWidth - xUnits)
panel.Scroll(xDest, -1)
print "XDEST: " + str(xDest)
for y in range(ySegments):
if ((y * yUnits) + yUnits) < virtualHeight:
yDest = yUnits * y
else:
yDest = (yUnits * y) - ((yUnits * (y + 1)) - virtualHeight)
panel.Scroll(-1, yDest)
print "YDEST: " + str(yDest)
panel.Update()
panelDC = wx.ClientDC(panel)
tempDC.Blit(xDest, yDest, visibleWidth, visibleHeight,
panelDC, xSource, ySource)

panel.SetScrollRate(xScroll, yScroll)

print bm.GetWidth()
print bm.GetHeight()
print panel.GetVirtualSize()

return bm

#-< CUT

6/21/05, Davide Salomoni <dsalomoni (AT) gmail (DOT) comwrote:
Matt Kubilus wrote:
I have a wxScrolledWindow I want to get the device context of the
entire area of the window. When I blit the windows dc onto a bitmap,
however, I get a cut off version of the window exactaly how it appears
on the screen.

How can I get a picture of the entire area of a wxScrolledWindow?
--
Thanks,
Matt K

I don't know if this can be applicable to your case, but I have done the
following for an application using GL and a wxScrolledWindow:

1) at init time, I create a memory DC with something like

self._virtualScreenBitmap = wx.EmptyBitmap(self.maxWidth,
self.maxHeight, -1)
self._memoryDC = wx.MemoryDC()
self._memoryDC.S(self._virtualScreenBitmap)

2) when I need to generate a picture, I have a method that simply does
this (canvas is the reference to the wxScrolledWindow):

dc = canvas._memoryDC
dc.SetBackground(wx.Brush(gDef.DEFAULT_BACKGRUND))
dc.Clear()

# redraw the GL shapes on the virtual bitmap
for shape in canvas.getShapes():
if not shape.GetParent():
shape.Draw(dc)

bitmap = canvas._virtualScreenBitmap
image = wx.ImageFromBitmap(bitmap)
image.SaveFile(filepath, wx.BITMAP_TYPE_PNG)

i.e. I redraw the entire content of the wxScrolledWindow myself on a
wx.MemoryDC, since IIRC the displayed content of a wxScrolledWindow is
generated dynamically. (i.e. the wxScrolledWindow only holds the content
for the displayed size and that's why you are getting a partial picture.)

If there is a different or simpler way to do this I would be glad to
know of course.

Davide

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Matt Kubilus wrote:
Hmm. That still just takes a picture of the screen (including the
Windows menu bar). Albeit in the correct overall size. I need to get
a hold of the actual buffer behind the WxScrolledWindow.

I think you have a problem here. There is no buffer behind a
wx.ScrolledWindow. As the window scrolls, Paint events are sent, and the
part uncovered needs to be re-drawn.

If I understand what you are trying to do, it way well be impossible, at
least directly. If you wanted to capture just custom drawn (wxDC) stuff,
then you could create an off screen buffer that is large enough to
capture everything, but I don't think there is any way to get native
widgets to draw to a buffer you create.
-Chris

Here is a simplified version of what I am trying to do:

from wxPython.wx import *
from wxPython.xrc import *

class scrollFrame(wxFrame):
def __init__(self):

wxFrameinit__(self,None,-1,"Title",size=wxSize(300,400))
self.scroll=wxScrolledWindow(self,-1)

x = 20
y = 20

for i in range(50):
st=wxStaticText(self.scroll, -1, " Text %d : " %(i),
pos=wxPoint(x,y))
w,h = st.GetSizeTuple()
tc=wxTextCtrl(self.scroll,-1, pos=wxPoint(x+w+5, y))
dy = h + 10
y += dy

self.scroll.SetScrollbars(0,dy,0,y/dy+1)
self.Show(1)

class MyApp( wx.App ):
def Init( self ):
self.frame2 = scrollFrame()
((300,1200))

panelDC = wx.ClientDC(self.frame2.scroll)
panelWidth, panelHeight = ()
bm = wx.EmptyBitmap(panelWidth, panelHeight)

temp_dc = wx.MemoryDC()
temp_dc.S(bm)
temp_dc.Blit(0,0, panelWidth, panelHeight, panelDC, 0,0)

bm.SaveFile("aBitmap.bmp", wxBITMAP_TYPE_BMP )

return 1

if __name__ == '__main__':
app = MyApp(0)
app.MainLoop()

Thanks,
Matt

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