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Drawing a pixmap onto a CgPrinterWindow

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Carl Gundel-2

Drawing a pixmap onto a CgPrinterWindow

I am trying to draw a pixmap onto a CgPrinterWindow using

CgDrawable>>

copyArea: dest

gc: gc

srcX: srcX

srcY: srcY

width: width

height: height

destX: destX

destY: destY

The pixmap has a CgScreen as its screen, and the printer window has a CgPrinterScreen. I get an error "Common Graphics error: BadMatch id: a CgPrinterWindow".

The error is thrown here:

   (self screen = dest screen and: [self depth = dest depth])
    ifFalse: [
     self display reportError: BadMatch with: dest.
     server endRequest.
     ^self]].

The source and destination screens are different. I'm not sure how to solve that problem. The graphic exists before I even know what the printer is going to be. It also expects the depth to be the same, but the display screen depth is 32 and the printer depth is 24.

Any ideas? How can I remap the pixmap to make it compatible with the printer?

Thanks.

-Carl

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Carl Gundel-2

Re: Drawing a pixmap onto a CgPrinterWindow

Okay, I seem to have figured out that the method I am using is only designed to copy around on the same medium, I guess. So I looked for other methods for copying between different drawing surfaces but I can't find anything.

-Carl

On Monday, July 21, 2014 11:23:39 AM UTC-4, Carl Gundel wrote:

I am trying to draw a pixmap onto a CgPrinterWindow using

    CgDrawable>>
        copyArea: dest
        gc: gc
        srcX: srcX
        srcY: srcY
        width: width
        height: height
        destX: destX
        destY: destY

The pixmap has a CgScreen as its screen, and the printer window has a CgPrinterScreen. I get an error "Common Graphics error: BadMatch id: a CgPrinterWindow".

The error is thrown here:

   (self screen = dest screen and: [self depth = dest depth])
    ifFalse: [
     self display reportError: BadMatch with: dest.
     server endRequest.
     ^self]].

The source and destination screens are different. I'm not sure how to solve that problem. The graphic exists before I even know what the printer is going to be. It also expects the depth to be the same, but the display screen depth is 32 and the printer depth is 24.

Any ideas? How can I remap the pixmap to make it compatible with the printer?

Thanks.

-Carl

Carl Gundel-2

Re: Drawing a pixmap onto a CgPrinterWindow

I kept on poking around until I found the answer. In the CgPixmap class there is a copyToPrinter method that shows how to do it.

image := pixmap asDeviceIndependentImage.
printGC := printerShell window createGC: 0 values: nil.
printerShell window
  putDeviceIndependentImage: printGC
  image: image
  srcRect: (0 @ 0 extent: image extent)
  destRect: (0 @ 0 extent: image extent truncated).
printGC freeGC.

I don't know how well this will scale with lots of large pixmaps, but it solves my problem in the short term.

Hopefully this will be helpful to others.

-Carl

On Monday, July 21, 2014 5:41:51 PM UTC-4, Carl Gundel wrote:

Okay, I seem to have figured out that the method I am using is only designed to copy around on the same medium, I guess. So I looked for other methods for copying between different drawing surfaces but I can't find anything.

-Carl

On Monday, July 21, 2014 11:23:39 AM UTC-4, Carl Gundel wrote:
I am trying to draw a pixmap onto a CgPrinterWindow using

    CgDrawable>>
        copyArea: dest
        gc: gc
        srcX: srcX
        srcY: srcY
        width: width
        height: height
        destX: destX
        destY: destY

The pixmap has a CgScreen as its screen, and the printer window has a CgPrinterScreen. I get an error "Common Graphics error: BadMatch id: a CgPrinterWindow".

The error is thrown here:

   (self screen = dest screen and: [self depth = dest depth])
    ifFalse: [
     self display reportError: BadMatch with: dest.
     server endRequest.
     ^self]].

The source and destination screens are different. I'm not sure how to solve that problem. The graphic exists before I even know what the printer is going to be. It also expects the depth to be the same, but the display screen depth is 32 and the printer depth is 24.

Any ideas? How can I remap the pixmap to make it compatible with the printer?

Thanks.

-Carl