Attachment 133883 Details for Bug 102481 – partical code c++

partical code c++

cairo-1.txt (text/plain), 4.83 KB, created by Tony Teveris on 2017-08-30 14:43:45 UTC

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Creator: Tony Teveris

Created: 2017-08-30 14:43:45 UTC

Size: 4.83 KB

patch

obsolete

>      private static IntPtr CairoCreateImageFromFile(string imageFilePath, out int imageWidth, out int imageHeight)
>      {
>         IntPtr cairo_image = IntPtr.Zero;
>
>         imageWidth = 0;
>         imageHeight = 0;
>
>         if (imageFilePath.Length != 0)
>         {
>            var tmpImgFile = System.IO.Path.GetTempPath() + TMP_IMG_NAME;
>            using (System.Drawing.Image image = System.Drawing.Image.FromFile(imageFilePath))
>            {
>               image.Save(tmpImgFile, System.Drawing.Imaging.ImageFormat.Png);
>
>               cairo_image = cairo.cairo_image_surface_create_from_png(tmpImgFile);
>
>               imageWidth = cairo.cairo_image_surface_get_width(cairo_image);
>               imageHeight = cairo.cairo_image_surface_get_height(cairo_image);
>            }
>         }
>
>         return cairo_image;
>      }
>
>
>partial code this is in a loop that processes each image file I want in the PDF
>
>
>         int imageWidth;
>         int imageHeight;
>         IntPtr cairo_image = CairoCreateImageFromFile(mImageFile, out imageWidth, out imageHeight);
>
>         cairo_status_t status = cairo.cairo_surface_status(cairo_image);
>         if (status != cairo_status_t.CAIRO_STATUS_SUCCESS)
>         {
>            cairo.cairo_surface_destroy(cairo_image);
>            cairo_image = IntPtr.Zero;
>         }
>
>         if (cairo_image != IntPtr.Zero)
>         {
>            NeedCrop(ref imageWidth, ref imageHeight, (int)info.ClipRectWidthInPixels, (int)info.ClipRectHeightInPixels);
>
>            // trim labels are NOT clipped to the piece. Because the clipping region has been established prior
>            // to this function we need to save the current state, reset the clipping region and when finished
>            // drawing the trim label restore the state
>            if ((info.flags & Constants.TrimLabelImage) != 0)
>            {
>               cairo.cairo_save(cr);
>               cairo.cairo_reset_clip(cr);
>            }
>
>            // save the current state of cr
>            cairo.cairo_save(cr);
>
>            cairo.cairo_translate(cr, locX * scale_coef, locY * scale_coef);
>
>            TransformGroup tg = new TransformGroup();
>            tg.Children.Add(new ScaleTransform(imageSize.Width * scale_coef / imageWidth, imageSize.Height * scale_coef / imageHeight));
>            tg.Children.Add(imageToPieceTransform);
>
>            cairo_matrix_t crTransform = new cairo_matrix_t(tg.Value.M11, tg.Value.M12, tg.Value.M21, tg.Value.M22, tg.Value.OffsetX, tg.Value.OffsetY);
>
>            cairo.cairo_transform(cr, ref crTransform);
>
>            if (fillPiece && tg.Inverse != null)
>            {
>               var pattern = cairo.cairo_pattern_create_for_surface(cairo_image);
>               cairo.cairo_pattern_set_extend(pattern, cairo_extend_t.CAIRO_EXTEND_REPEAT);
>
>               cairo.cairo_set_source(cr, pattern);
>
>               // invert piece bounds
>               var p1 = tg.Inverse.Transform(rTransfBackground.BottomLeft);
>               var p2 = tg.Inverse.Transform(rTransfBackground.TopLeft);
>               var p3 = tg.Inverse.Transform(rTransfBackground.TopRight);
>               var p4 = tg.Inverse.Transform(rTransfBackground.BottomRight);
>
>               cairo.cairo_move_to(cr, p1.X, p1.Y);
>               cairo.cairo_line_to(cr, p2.X, p2.Y);
>               cairo.cairo_line_to(cr, p3.X, p3.Y);
>               cairo.cairo_line_to(cr, p4.X, p4.Y);
>               cairo.cairo_close_path(cr);
>
>               cairo.cairo_fill(cr);
>
>               cairo.cairo_pattern_destroy(pattern);
>               pattern = IntPtr.Zero;
>
>               // DEBUG: set line color
>               //cairo.cairo_set_source_rgb(cr, 1.0, 0.0, 0.0);
>            }
>            else
>            {
>               // crop image - move out mask
>               cairo.cairo_set_source_surface(cr, cairo_image, -info.clipRectLeft, -info.clipRectTop);
>
>               // mask
>               cairo.cairo_rectangle(cr, 0, 0, imageWidth, imageHeight);
>
>               // fill
>               cairo.cairo_fill(cr);
>
>               // DEBUG: set line color
>               cairo.cairo_set_source_rgb(cr, 0.0, 0.0, 1.0);
>            }
>
>            cairo.cairo_surface_destroy(cairo_image);
>            cairo_image = IntPtr.Zero;
>
>            // DEBUG: draw image position
>            //cairo.cairo_set_line_width(cr, 0.4);
>            //cairo.cairo_rectangle(cr, 0, 0, imageWidth, imageHeight);
>            //cairo.cairo_stroke(cr);
>
>            // if trim label restore the state (clipping region)
>            if ((info.flags & Constants.TrimLabelImage) != 0)
>            {
>               cairo.cairo_restore(cr);
>               // delete the "temp" label file
>               File.Delete(mImageFile);
>            }
>
>            // restore the saved state of cr
>            cairo.cairo_restore(cr);
>         }

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Attachments on bug 102481: 133883 | 133891

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