/* Callback from GS with the rendered thumbnail. Also update progress */
private void ThumbPageCallback(int width, int height, int raster, double zoom_in,
int page_num, IntPtr data)
{
Byte[] bitmap = null;
bitmap = new byte[raster * height];
Marshal.Copy(data, bitmap, 0, raster * height);
DocPage doc_page = new DocPage();
m_thumbnails.Add(doc_page);
doc_page.Content = Page_Content_t.THUMBNAIL;
doc_page.Width = width;
doc_page.Height = height;
doc_page.Zoom = zoom_in;
doc_page.PixBuf = new Gdk.Pixbuf(bitmap,
Gdk.Colorspace.Rgb, false, 8, width,
height, raster);
m_GtkimageStoreThumb.AppendValues(doc_page.PixBuf);
ThumbAssignMain(page_num, width, height, 1.0);
m_GtkimageStoreMain.AppendValues(m_docPages[page_num - 1].PixBuf);
m_GtkProgressBar.Fraction = ((double)page_num / ((double)page_num + 1));
return;
}
/* Assign current pages to blown up thumbnail images */
private void ThumbAssignMain(int page_num, int width, int height, double zoom_in)
{
DocPage doc_page = new DocPage();
doc_page.Content = Page_Content_t.THUMBNAIL;
doc_page.Zoom = zoom_in;
doc_page.Width = (int)(width / (Constants.SCALE_THUMB));
doc_page.Height = (int)(height / (Constants.SCALE_THUMB));
doc_page.PixBuf = m_thumbnails[page_num - 1].PixBuf.ScaleSimple(doc_page.Width, doc_page.Height, Gdk.InterpType.Nearest);
doc_page.PageNum = page_num;
m_docPages.Add(doc_page);
if (page_num == 1)
{
m_page_scroll_pos.Add(height);
}
else
{
m_page_scroll_pos.Add(height + m_page_scroll_pos[page_num - 2]);
}
}
/* Callback from ghostscript with the rendered image. */
private void MainPageCallback(int width, int height, int raster, double zoom_in,
int page_num, IntPtr data)
{
Byte[] bitmap = null;
bitmap = new byte[raster * height];
Marshal.Copy(data, bitmap, 0, raster * height);
DocPage doc_page = m_docPages[m_current_page];
if (doc_page.Content != Page_Content_t.FULL_RESOLUTION ||
m_aa_change)
{
doc_page.Width = width;
doc_page.Height = height;
doc_page.Content = Page_Content_t.FULL_RESOLUTION;
doc_page.Zoom = m_doczoom;
doc_page.PixBuf = new Gdk.Pixbuf(bitmap,
Gdk.Colorspace.Rgb, false, 8, width,
height, raster);
m_GtkimageStoreMain.SetValue(m_tree_iter, 0, doc_page.PixBuf);
}
if (page_num == 1)
{
m_page_scroll_pos[0] = height;
}
else
{
m_page_scroll_pos[page_num - 1] = height + m_page_scroll_pos[page_num - 2];
}
m_GtkimageStoreMain.IterNext(ref m_tree_iter);
m_current_page += 1;
m_GtkProgressBar.Fraction = ((double)page_num / ((double)page_num + 1));
return;
}
