github-starred/ultimatepp
2
0
Fork 0
mirror of https://github.com/ultimatepp/ultimatepp.git synced 2026-07-11 22:03:01 -06:00
Code Issues 33 Projects Packages Wiki Activity Actions

Draw: Tutorial updated

Browse source 
git-svn-id: svn://ultimatepp.org/upp/trunk@5530 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2012-11-07 19:25:07 +00:00
parent 64b17d26bd
commit a520708dbd
1 changed files with 12 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

27
uppsrc/Draw/srcdoc.tpp/DrawTutorial$en-us.tpp
View file

@ -394,16 +394,14 @@ area.&]
[s3; 3. Fonts and font metrics&]
[s5; [* Font] is a simple font description value type `- it contains
an index of typeface, height of font and additional attributes
(e.g. italic flag). [* Info ]method of Font returns the more complex
[* FontInfo] object that provides metrics information about the
font and individual characters.&]
[s5; The most important information of FontInfo is the [* GetAscent]
value `- distance from the baseline to the top of character,
the [* GetDescent] value `- distance from the baseline to the bottom
of character cell (height of character cell `- [* GetHeight] `-
is simply the sum of both values) and the individual character
width that can be obtained by FontInfo`'s [* operator`[`]] (where
index is in UNICODE).&]
(e.g. italic flag). Font also provides metrics information about
the font and individual characters.&]
[s5; The most important information of Font is the [* GetAscent] value
`- distance from the baseline to the top of character, the [* GetDescent]
value `- distance from the baseline to the bottom of character
cell (height of character cell `- [* GetHeight] `- is simply the
sum of both values) and the individual character width that can
be obtained by Font`'s [* operator`[`]] (where index is in UNICODE).&]
[s5; To get the list all available typefaces and respective use [* GetFaceCount]
and [* GetFaceName] static methods of Font.&]
[s5; Position given in [* DrawText] specifies the top`-left corner
@ -423,16 +421,15 @@ the C array with integer widths of characters.&]
[s7; -|-|w.Offset(50, 50);&]
[s7; -|-|const char `*text `= `"Programming is fun`";&]
[s7; -|-|Font fnt(`~fontlist, 60);&]
[s7; -|-|[* FontInfo fi `= fnt.Info()];&]
[s7; -|-|int x `= 0;&]
[s7; -|-|[* Vector<int> dx];&]
[s7; -|-|for(const char `*s `= text; `*s; s`+`+) `{&]
[s7; -|-|-|int width `= fi`[`*s`];&]
[s7; -|-|-|w.DrawRect(x, 0, width `- 1, [* fi.GetAscent()], Color(255,
[s7; -|-|-|int width `= [* fnt`[`*s`]];&]
[s7; -|-|-|w.DrawRect(x, 0, width `- 1, [* fnt.GetAscent()], Color(255,
255, 200));&]
[s7; -|-|-|w.DrawRect(x, [* fi.GetAscent()], width `- 1, [* fi.GetDescent()],
[s7; -|-|-|w.DrawRect(x, [* fnt.GetAscent()], width `- 1, [* fnt.GetDescent()],
Color(255, 200, 255));&]
[s7; -|-|-|w.DrawRect(x `+ width `- 1, 0, 1, [* fi.GetHeight()], Black());&]
[s7; -|-|-|w.DrawRect(x `+ width `- 1, 0, 1, [* fnt.GetHeight()], Black());&]
[s7; -|-|-|[* dx.Add](width `+ 4);&]
[s7; -|-|-|x `+`= width;&]
[s7; -|-|`}&]