Added support for Freetype, JPEG, Giflib, and Pango on Windows

[3p3r]

I have only tested this with Visual Studio 2013 (Update 5) x64 build. Following versions of dependencies I have used:

• GTK+ 2.22.1 bundle
• Freetype 2.6
• GifLib 5.1.1
• LibJpeg Turbo 1.4.1

Note that I have not used the same Freetype that comes with GTK+, because it was slightly outdated and I would rather building Freetype from scratch since it uses CMake and it takes literally two minutes to build and install it. After installation include/freetype2 needs to be renamed to include/freetype.

Giflib comes with autoconf scripts for its build management. Honestly the easiest way to build it, is just including it in the source tree. That's how Leptonica builds it as well.

[3p3r]

Almost forgot, two other things needed to be added in order to get the compilation going:

1. A dummy unistd.h for Freetype and GifLib.
2. An implementation for strndup on Windows.

[terrancesnyder]

Holy font batman! +1000 on this.

[iongion]

+1K - I couldnt use node-canvas on windows if not for this issue, mentioning the proper prebuilt GTK bundle

[LinusU]

@sepehr-laal would you mind rebasing on latest master?

[chearon]

+1K - I couldnt use node-canvas on windows if not for this issue, mentioning the proper prebuilt GTK bundle

It's mentioned on the wiki here. Is this PR still relevant? I didn't think there was anything wrong with the Windows build.

[zbjornson]

GIF support maybe? But if it's added, it should probably be optional like JPEG and SVG.

[3p3r]

@LinusU it's been a long time since I looked at this PR. I know of a handful of companies and individuals who have production code off of this PR. If you don't mind, I am going to submit a new PR and close this as is for historical references.

[LinusU]

Sounds good 👍

[zbjornson]

Closing per:

I am going to submit a new PR and close this as is for historical references.