renun/koreader
1
0
Fork 0
mirror of https://github.com/koreader/koreader.git synced 2025-08-10 00:52:38 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add demo menu widget in new ui framework

Browse Source
This commit is contained in:
Qingping Hou
2012-04-29 23:53:48 +08:00
parent df1c8814ea
commit b47d5b76eb
4 changed files with 350 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
rendertext.lua
View File

@@ -44,6 +44,30 @@ function clearGlyphCache()
glyphcache = {}
end
function getSubTextByWidth(text, face, width, kerning)
local pen_x = 0
local prevcharcode = 0
local char_list = {}
for uchar in string.gfind(text, "([%z\1-\127\194-\244][\128-\191]*)") do
if pen_x < width then
local charcode = util.utf8charcode(uchar)
local glyph = getGlyph(face, charcode)
if kerning and prevcharcode then
local kern = face.ftface:getKerning(prevcharcode, charcode)
pen_x = pen_x + kern
end
pen_x = pen_x + glyph.ax
if pen_x <= width then
prevcharcode = charcode
table.insert(char_list, uchar)
else
break
end
end
end
return table.concat(char_list)
end
function sizeUtf8Text(x, width, face, text, kerning)
if text == nil then
debug("sizeUtf8Text called without text");