Add the -png flag to pdftoppm to output to PNG

Based on a patch by Shen Liang <shenzhuxi@gmail.com>
Also factored common PNG code from HtmlOutputDev to PNGWriter

1 files changed, 43 insertions, 0 deletions

diff --git a/goo/PNGWriter.h b/goo/PNGWriter.h
new file mode 100644
index 00000000..0540bd7d
--- /dev/null
+++ b/goo/PNGWriter.h
@@ -0,0 +1,43 @@
+//========================================================================
+//
+// PNGWriter.h
+//
+// This file is licensed under the GPLv2 or later
+//
+// Copyright (C) 2009 Warren Toomey <wkt@tuhs.org>
+// Copyright (C) 2009 Shen Liang <shenzhuxi@gmail.com>
+// Copyright (C) 2009 Albert Astals Cid <aacid@kde.org>
+//
+//========================================================================
+
+#ifndef PNGWRITER_H
+#define PNGWRITER_H
+
+#include <config.h>
+
+#ifdef ENABLE_LIBPNG
+
+#include <cstdio>
+#include <png.h>
+
+class PNGWriter
+{
+	public:
+		PNGWriter();
+		~PNGWriter();
+		
+		bool init(FILE *f, int width, int height);
+		
+		bool writePointers(png_bytep *rowPointers);
+		bool writeRow(png_bytep *row);
+		
+		bool close();
+	
+	private:
+		png_structp png_ptr;
+		png_infop info_ptr;
+};
+
+#endif
+
+#endif
\ No newline at end of file