Get unexpected rectangles when running Gdi+ Sample for DroidSansFallback font

[zwcloud]

download DroidSansFallbackFull.ttc

https://github.com/aosp-mirror/platform_frameworks_base/tree/master/data/fonts

[prepare]

I've checked the DroidSansFallbackFull.ttc font
It contains some glyphs eg...

I think it should be used to complement with other DroidSans font
I will check this more

[zwcloud]

Here is a post that seems related to this issue: dompdf/dompdf#1508 (comment)

[prepare]

I will add typeface-fallback mechanism later

[prepare]

Script-Detection => Auto-Font-Switching and Font-fallback, Work-in-Progress

こんにちは, 你好, 여보세요 abc 0123 شمس حب

pic 1: latin from 'AsanaMath'

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こんにちは, 你好, 여보세요 abc 0123 شمس حب

pic 2: abc from 'Sarabun', alternative typeface

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شمس حب น้ำน้ำ こんにちは

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😁😁😁こんにちは, 你好, 여보세요

[prepare]

Gdi+ Example, Automatic-Typeface-Switching Example

No documentation at this time,
so please see/test it on master branch => 54cf6ba

I will describe this later on "Typography.TextServices" => #89

你好a12345

pic 1, 你好 is rendered with Droid Sans Fallback Regular , But a12345 is render with other typeface

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你好😁你好

pic 2: 你好=> Droid Sans Fallback, 😁 => on Win10, Segoe UI Emoji, and switch back to Droid Sans Fallback again for 你好