Thomas Krumbein wrote:
Hey,
I am working on a project, in which I display embedded graphics of a
writer-document in a dialog.
With some help of this list (spezial thanks to Fernand ;-) ) I can now
show the embedded graphics dirct on the dialog.
I use for this the following code:
REM URL des Bildes auslesen
oBild = oDoc.getGraphicObjects().getByName(sName)
sBildURL = Mid(oBild.GraphicURL, 28, len(oBild.GraphicURL))
REM Bild aus Datei als Objekt laden
for i = 0 to uBound(aBildNamen())
if InStr(1, aBildNamen(i), sBildURL, 0) then
oVorschauGrafik =
getGraphFromStream(oPictures.getByName(aBildNamen(i)).getInputStream())
exit For
end if
next
REM Porportionfaktor Laden
nProp =
oVorschauGrafik.sizepixel.width/oVorschauGrafik.sizepixel.height ' 1
= Hochkant, 1 -Querformat, = 1 Quadrat
' oRenderer = createUnoService(com.sun.star.graphic.GraphicRendererVCL)
Dim sRect as new com.sun.star.awt.Rectangle
sRect.X = 335
sRect.Y = 40
sRect.Width = 150
sRect.Height = 150
if nProp 1 then 'Hochkant
sRect.Width = 150 * nProp
sRect.X = 335 + (150 - sRect.Width)/2
elseif nProp 1 then 'Querformat
sRect.Height = 150 / nProp
sRect.Y = 40 + (150 - sRect.Height)/2
end if
oPaintListener = CreateUnoListener(MyDialog_,
com.sun.star.awt.XPaintListener)
oDlg.Peer.addPaintListener( oPaintListener )
oRenderer.Device = oDlg.Peer.createGraphics.Device
oRenderer.DestinationRect = sRect
oRenderer.render(oVorschauGrafik)
The renderer is defined in a seperat Part of the macro:
oRenderer = createUnoService(com.sun.star.graphic.GraphicRendererVCL)
The Problem is now, that I use the same part of the dialog to show
selected graphics. That is no problem, when all graphics have the same
size and do not have transparent Pixels. The renderer will change the
used Pixels.
But it is a problem, when I read a smaler graphic - or a transparent
gif-graphic - then you will see the prior graphic on not used pixels of
the rectangular area.
So my question: How can I remove the rendered graphic from diolog? Or is
there a posbility, to overwirte the whole area with the
background-pixelcolour?
/i struggeld also long time to solve this problem
then a clever gui on the forum who learned us to use a peer dow to
render a graphic, found also the solution: invalidate the window
for invalidating there are several way's depending on what part of the
window hes to been refresched .OO uses rheir famous constants for it (I
uses 2 ) who works fine
gives you dialog a unique name as dialog1 and uses thisi code:
oWin =GetWindowOpen(Dialog1) 'the titel of the dialog must be
Dialog1'
oWin.invalidate(2) ' 2 works fine but there are other constants ans
combinations posibla
function GetWindowOpen(sTitle as String) as Object
oToolkit = Stardesktop.ActiveFrame.ContainerWindow.Toolkit
lCount = oToolkit.TopWindowCount
' xray otoolkit
for k=0 to lCount -1
oWin = oToolkit.getTopWindow(k)
if HasUnoInterfaces(oWin, com.sun.star.awt.XDialog) then
if left(oWin.Title, len(sTitle)) = sTitle then '
GetWindowOpen = oWin
exit function
endif
endif
next k
end function
hope it helps
Fernand
/
Thanks or your help
Thomas
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