How can I display JPEG Image in Rave Report?
Hi Guys,
I am currently using Delphi 2005 developing a project in VCL Form Application - Delphi for Win32. therefore I intend to use Rave Report for generating reports.
I have this situation:
- Extracting Jpeg images (Blob field) from db (Interbase 7.1) to generate reports using rave reporting tool. But found that its only support Bitmap images.
So, how should I go about to get the jpeg images shown on Rave Report?
Please advice. Thanks.
Regards,
Eric
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0 |
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Eric
12/5/2009 2:25:26 AM
embarcadero.delphi.reporting
487 articles. 
0 followers.
2 Replies
2635 Views
> {quote:title=Eric Kho wrote:}{quote}
> Hi Guys,
>
> I am currently using Delphi 2005 developing a project in VCL Form Application - Delphi for Win32. therefore I intend to use Rave Report for generating reports.
> I have this situation:
> - Extracting Jpeg images (Blob field) from db (Interbase 7.1) to generate reports using rave reporting tool. But found that its only support Bitmap images.
>
> So, how should I go about to get the jpeg images shown on Rave Report?
> Please advice. Thanks.
>
>
> Regards,
> Eric
Put this code in the OnDecodeImage event
procedure TCCoCHForm.ReportSystem1DecodeImage(Sender: TObject;
ImageStream: TStream; ImageType: String; Bitmap: TBitmap);
var
Image: TJPEGImage;
begin
if ImageType = 'JPG' then
begin
Image := TJPEGImage.Create;
try
Image.LoadFromStream(ImageStream);
Image.DIBNeeded;
BitMap.Assign(Image);
finally
Image.Free;
end;
end;
end;
You must also put JPEG in the uses clause. Here is the code I use to pring the jpeg...
if PhotoTable.FindKey([TK]) then
begin
if (WhichDir = 'C') or (WhichDir = 'E') or (WhichDir = 'A') then
GraphicPath := DirectoryPicLoc + '\' +
PhotoTable.FieldByName('PicName').asString +
'.jpg'
else
GraphicPath := DirectoryPicLoc + '\' +
PhotoTable.FieldByName('PicName').asString +
'Family.jpg';
if FileExists(GraphicPath) then
begin
Stream := TMemoryStream.Create;
Image := TJPEGImage.Create;
try
Image.LoadFromFile(GraphicPath);
Image.SaveToStream(Stream);
Stream.Position := 0;
GX := 1.62;
gXPosNPR := gXPosNP+2.25;
PrintImageRect(gXPosNP,gYPosP,gXPosNPR,gYPosP+GX,
Stream,'JPG');
finally
Image.Free;
Stream.Free
end;
end
Define Image as Image: TJPEGImage;
Hope that helps.
George
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0 |
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George
12/7/2009 3:02:14 AM
Hi George,
Thanks for the advise. ;)
Best Regards,
Eric
> {quote:title=George Winkler wrote:}{quote}
> > {quote:title=Eric Kho wrote:}{quote}
> > Hi Guys,
> >
> > I am currently using Delphi 2005 developing a project in VCL Form Application - Delphi for Win32. therefore I intend to use Rave Report for generating reports.
> > I have this situation:
> > - Extracting Jpeg images (Blob field) from db (Interbase 7.1) to generate reports using rave reporting tool. But found that its only support Bitmap images.
> >
> > So, how should I go about to get the jpeg images shown on Rave Report?
> > Please advice. Thanks.
> >
> >
> > Regards,
> > Eric
>
> Put this code in the OnDecodeImage event
>
> procedure TCCoCHForm.ReportSystem1DecodeImage(Sender: TObject;
> ImageStream: TStream; ImageType: String; Bitmap: TBitmap);
> var
> Image: TJPEGImage;
> begin
> if ImageType = 'JPG' then
> begin
> Image := TJPEGImage.Create;
> try
> Image.LoadFromStream(ImageStream);
> Image.DIBNeeded;
> BitMap.Assign(Image);
> finally
> Image.Free;
> end;
> end;
> end;
>
> You must also put JPEG in the uses clause. Here is the code I use to pring the jpeg...
>
> if PhotoTable.FindKey([TK]) then
> begin
> if (WhichDir = 'C') or (WhichDir = 'E') or (WhichDir = 'A') then
> GraphicPath := DirectoryPicLoc + '\' +
> PhotoTable.FieldByName('PicName').asString +
> '.jpg'
> else
> GraphicPath := DirectoryPicLoc + '\' +
> PhotoTable.FieldByName('PicName').asString +
> 'Family.jpg';
> if FileExists(GraphicPath) then
> begin
> Stream := TMemoryStream.Create;
> Image := TJPEGImage.Create;
> try
> Image.LoadFromFile(GraphicPath);
> Image.SaveToStream(Stream);
> Stream.Position := 0;
> GX := 1.62;
> gXPosNPR := gXPosNP+2.25;
> PrintImageRect(gXPosNP,gYPosP,gXPosNPR,gYPosP+GX,
> Stream,'JPG');
> finally
> Image.Free;
> Stream.Free
> end;
> end
>
> Define Image as Image: TJPEGImage;
>
> Hope that helps.
>
> George
|
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0 |
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coiner
12/9/2009 12:38:29 AM
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