DR1000 Chinese Vertical Layout uds plugin plaintext Release

[spuggy]

Dears
Before Install, you must have one Chinese Font file installed. use the wqy_zenhei.ttf.
User in Latin is not useful, no effect.

Here is the vertical Layout for Chinese, possible for all CJK, too.
This plugin is modified from original v1.7. Let user can see Vertical text, It uses the benefit of PANGO and FT.

Chinese Vertical layout we must do following things,

for Pango Layer
a) set the base_Gravity to PANGO_GRAVITY_EAST
b) rotate 90

At Font data,
I am not sure whether pango can do following things or not, especialy item (a).
a) unrotated the Latin half glyphs.
b) unrotated the Chinese full vertical scripts.
c) hinting some punctuations.
others are not considered, for example, time, digital index, combinational Hanzi,
bin

Source code
document-viewer-plugins-1.7-vertical CJK plaintext v0.1.zip

[ericshliao]

Perhaps setting proper PangoGravityHint can make Latin glyphs remain their natural gravity.

[spuggy]

tried, but failed.

We want that Latin don't rotate, and Chinese need to rotate for this purpose.

The problem is,
When the pango do right layout position for both Latin and Chinese Glyphs.
Freetype Render generates wrong direction bitmap for Latin, it rotate 90, too.

It is not clear,
Does the Pango active all glyph 90 degree transformation to Freetype wrong, or
Does not Freetype backend handle this different setting?

Anyway, we can switch this at Freetype layer by IGNORE_TRANSFORMATION flag.

[spuggy]

**WARNING**
I have modified the Plug-in correct UI, but Latin paper won't be correct, it will upside down.
If you don't care, and Love Chinese Vertical layout then try it.

警告：0.2 版將0.1 UI導正，但副作用是 PageFlow的開啟仍以橫排為主，方向上下與直書左右不同；另外英文的紙張方向會倒置。介意的請勿安裝 ！

[spuggy]

This version uses the Rotate ICON to switch the Vertical Layout features.
v0.2b 2010/09/18

For 1.7.1 Version, 2.0RC3 seems not work.
修正前一版不能橫書的困擾，可由Rotate ICON 直接選要橫書/直書。
Vertical Portrait --Rotate--> Horizontal landscape--Rotate--> Horizontal Portrait --Rotate--> Vertical Landscape.
Vertical Layout is useful for CJK, not Latin.
Before Install, you need to Install Chinese Font.

The page flow is wrong for the Vertical Layout.