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48 Commits

Author SHA1 Message Date
Nigel Tao
f9531a3606 Add a face.Metrics method, and parse hhea ascent and descent. 
A recent change added a Metrics method to the font.Face interface.
 2016-03-24 11:05:48 +11:00
Nigel Tao
9ce4eec92a Add an example/capjoin program. 2016-02-21 22:25:27 +11:00
Nigel Tao
41fa49aa5b Update x/exp/shiny/font to x/image/font. 2015-09-01 15:49:46 +10:00
Nigel Tao
3ba1c0f728 Rename Point and End slices to Points and Ends. 
The slice Foos is plural; it refers to multiple elements. The element Foos[i]
is the i'th Foo.
 2015-08-30 22:27:18 +10:00
Nigel Tao
3cc748686b Use fixed.Rectangle26_6 instead of truetype.Bounds. 
The previous "the endpoints are inclusive" comment seems confusing. It's true
that the bounding box's max X equals the right-most coordinate, which suggests
<= instead of <, but that node's coordinate is itself exclusive. Consider the
solid 1-pixel square: (0, 0), (64, 0), (64, 64), (0, 64) in fixed.Point26_6
coordinates. The right-most coordinate is 64, and the bounding box's max X
equals 64, but rasterizing that square only affects sub-pixels up to but not
including 64.

Instead, it seems accurate to follow the fixed.Rectangle26_6 description, in
that the max values are exclusive.
 2015-08-30 22:06:37 +10:00
Nigel Tao
7a598da6de Delete the truetype.NewGlyphBuf function. 
The zero value of a GlyphBuf is already perfectly usable.
 2015-08-30 21:35:58 +10:00
Nigel Tao
62e59645ee Quantize sub-pixel glyph rendering. 
This is in anticipation of caching glyph images. Quantization means that cache
hits are more likely.

Also make NewFace take an *Options instead of an Options.
 2015-08-25 22:34:31 +10:00
Nigel Tao
a021a5f23e Rename Kerning to Kern. 2015-08-24 16:17:16 +10:00
Nigel Tao
24265d1c91 Implement GlyphBounds and GlyphAdvance. 2015-08-24 15:51:50 +10:00
Nigel Tao
6deea24143 Add a truetype.Face type. 
Its implementation is mostly a copy/paste of the freetype.Context type.
Follow-up commits will make it more efficient.

Also add an example that uses a truetype.Face and the
golang.org/x/exp/shiny/font package to draw text.
 2015-08-22 14:46:12 +10:00
Nigel Tao
f42630ca7a Use the common golang.org/x/exp/shiny/font.Hinting type. 2015-08-20 16:07:51 +10:00
Nigel Tao
e8121e3c7d Don't use backtick quotes in the comments. 2015-08-18 16:33:14 +10:00
Nigel Tao
2a5cbfd47e Use the fixed.Int26_6 type in package truetype. 2015-08-18 16:30:37 +10:00
Nigel Tao
a9554eda48 Fix example/freetype for the s/Fix32/fixed.Int26_6/ change. 2015-08-18 16:08:44 +10:00
Nigel Tao
856a70c395 Use the fixed.Int26_6 and fixed.Point26_6 types. 2015-08-17 10:26:09 +10:00
Nigel Tao
d91c1d6844 Remove Point methods other than Add, Sub, Mul. 
This is in anticipation of removing the Point type entirely. Instead, we will
use the fixed.Point26_6 type from golang.org/x/image/math/fixed.
 2015-08-13 21:17:25 +10:00
Nigel Tao
84ba7fbd7a Add "+build ignore" tags to the examples. 2015-08-12 14:41:46 +10:00
Nigel Tao
bf25f8ce0e Move files up one level. 2015-08-12 14:30:01 +10:00
Nigel Tao
49fa4a4de0 freetype: add a Hinting enum in the top-level freetype package, and 
hide the Hinter implementation in the freetype/truetype package.

LGTM=bsiegert
R=bsiegert
CC=golang-codereviews
https://codereview.appspot.com/58940043
 2014-02-01 14:12:48 +11:00
Nigel Tao
b968fb0953 freeetype: move the test fonts from the luxi-fonts/ directory to 
testdata/, in anticipation of having other test data.

R=dsymonds
CC=bsiegert, golang-dev
https://codereview.appspot.com/14361044
 2013-10-04 17:03:59 +10:00
Nigel Tao
28cc5fbc5d freetype: move the scaling from FUnits to pixels from package freetype 
to package truetype.

R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6427062
 2012-07-25 22:10:25 +10:00
Nigel Tao
e1ef029a43 freetype: make freetype clean wrt "go vet". 
R=dsymonds
CC=golang-dev
http://codereview.appspot.com/6202052
 2012-05-07 22:52:01 +10:00
Nigel Tao
97fe2fb9c1 freetype: import path gofixes. 
Also update freetype/truetype for s/int/rune/.

R=rsc, bradfitz
CC=golang-dev
http://codereview.appspot.com/5505067
 2011-12-23 10:55:36 +11:00
Nigel Tao
7b867fea2e freetype: image/color gofix. 
R=r, rsc
CC=golang-dev
http://codereview.appspot.com/5166052
 2011-10-06 13:55:02 +11:00
Nigel Tao
4188558878 freetype: update for image.NewXxx change. 
R=rsc
CC=golang-dev
http://codereview.appspot.com/4996046
 2011-09-14 22:02:41 +10:00
Nigel Tao
43d4d89685 freetype: update for image.Pix changes. 
R=r
CC=golang-dev
http://codereview.appspot.com/4675071
 2011-07-10 15:05:40 +10:00
Nigel Tao
03e93b9a66 freetype: update for image/draw changes. 
R=r
CC=golang-dev
http://codereview.appspot.com/4620044
 2011-06-16 12:25:21 +10:00
Nigel Tao
21635f71f4 freetype: update for os.Open changes. 
R=adg, r2
CC=golang-dev
http://codereview.appspot.com/4386048
 2011-04-11 10:48:00 +10:00
Nigel Tao
380b6363b2 freetype: s/float/float64/. 
R=adg, r2
CC=golang-dev
http://codereview.appspot.com/4040045
 2011-01-21 12:27:50 +11:00
Nigel Tao
18fe7866b3 freetype: update log to s/Stderr/Println/. 
R=r, nigeltao_gnome, adg
CC=golang-dev
http://codereview.appspot.com/2527041
 2010-10-15 14:02:11 +11:00
Nigel Tao
220b691d5c freetype: add NewAlpha{Src,Over}Painter constructor function for 
consistency with existing NewFooPainter functions.

Unbreak build from ColorImage change in the core image package.

R=adg
CC=golang-dev
http://codereview.appspot.com/2450041
 2010-10-12 16:55:01 +11:00
Nigel Tao
eda48ef1c3 freetype: make the point an argument to DrawString, not part of the 
context state. Also rename DrawText to DrawString.

R=r
CC=golang-dev
http://codereview.appspot.com/2208041
 2010-09-15 14:35:22 +10:00
Nigel Tao
06369b10f7 freetype: add a clip rectangle. 
R=r
CC=golang-dev
http://codereview.appspot.com/2171045
 2010-09-13 18:20:47 +10:00
Nigel Tao
84097fa410 freetype: cache glyphs during DrawText. 
A freetype.Context now has dst and src image setters and the notion of
a current point, instead of having to pass a painter and pt to DrawText.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/2169041
 2010-09-09 19:22:48 +10:00
Nigel Tao
b8ed0a9c12 freetype-go: change freetype.DrawText's point to be at the baseline 
instead of at 1em above the baseline.

R=r
CC=golang-dev
http://codereview.appspot.com/2042041
 2010-08-27 15:49:35 +10:00
Nigel Tao
6a75ac002d freetype-go: update examples for draw.Rect being renamed to image.Rect. 
R=r
CC=golang-dev
http://codereview.appspot.com/1961046
 2010-08-27 10:47:48 +10:00
Nigel Tao
3657abe884 freetype: update for image representation change (1849041). 
R=r, adg
CC=golang-dev
http://codereview.appspot.com/1850041
 2010-08-10 17:39:32 +10:00
Nigel Tao
2e8bf4f4fa freetype: Update examples to use explicit colors. 
R=rsc
CC=golang-dev
http://codereview.appspot.com/1848055
 2010-08-04 18:49:10 +10:00
Nigel Tao
2af394dab9 freetype: clarify that the GPL licence is "version 2 or later", not 
just version 2. The FTL (Freetype Licence) is still available. This
matches the original Freetype library (written in C).

This only expands and does not further restrict the licensing options
available to users of the freetype-go library.

R=adg
CC=golang-dev
http://codereview.appspot.com/1731049
 2010-08-03 11:07:23 +10:00
Nigel Tao
3e38a96419 freetype/raster: Rename Fixed and Fixed64 to Fix32 and Fix64. 
R=rsc
CC=golang-dev, rog
http://codereview.appspot.com/1686048
 2010-07-01 09:42:43 +10:00
Nigel Tao
4d90648d2c freetype/raster: Implement round joins. 
R=r, rsc
CC=golang-dev, rog
http://codereview.appspot.com/1746043
 2010-06-30 15:10:17 +10:00
Nigel Tao
5836d0e202 Freetype-Go: take the RGBAPainter out of a RGBAContext. Instead, 
a Context can now take any Painter during DrawText.

R=r
CC=rog, golang-dev
http://codereview.appspot.com/1341041
 2010-05-27 22:22:49 -07:00
Nigel Tao
9c4da76964 Freetype-Go: gamma is now a float instead of a float64. 
R=r
CC=golang-dev
http://codereview.appspot.com/1236042
 2010-05-19 17:37:01 -07:00
Nigel Tao
25c38cfec1 Freetype-Go: new freetype package to provide a convenience API to 
draw text onto an image.

This is a simple API that doesn't handle line breaking, ligatures,
right-to-left or vertical scripts, and other fancy features.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/1121045
 2010-05-14 13:29:53 +10:00
Nigel Tao
f6caa104ec Freetype-Go: truetype parser initial check-in. 
Parsing a malformed TTF may result in an index out-of-bounds panic,
rather than guaranteeing to return an error. This may be tightened
in the future.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/940044
 2010-05-04 09:54:43 +10:00
Nigel Tao
4aa7375072 Freetype-Go: batch Spans when painting. 
Introduce MonochromePainter and GammaCorrectionPainter.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/904041
 2010-04-13 22:26:10 +10:00
Nigel Tao
593a182c4e Freetype-Go: Implement cubic splines; rename MoveN to AddN. 
R=rsc
CC=golang-dev, r
http://codereview.appspot.com/894041
 2010-04-06 21:25:48 +10:00
Nigel Tao
14f2df1aef Freetype-Go: Initial code check-in. 
R=r, rsc
CC=golang-dev
http://codereview.appspot.com/841042
 2010-04-02 10:07:24 +11:00