AuroraMiddleware/skia2
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SkTextBox to use public interfaces for line layout.

Browse Source 
https://codereview.appspot.com/6438044/


git-svn-id: http://skia.googlecode.com/svn/trunk@4731 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
bungeman@google.com 2012-07-24 16:08:45 +00:00
parent 607fe077c8
commit 6fccbd1e56
1 changed files with 1 additions and 48 deletions
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49
src/views/SkTextBox.cpp
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@ -1,4 +1,3 @@
/*
* Copyright 2006 The Android Open Source Project
*
@ -6,11 +5,8 @@
* found in the LICENSE file.
*/
#include "SkTextBox.h"
#include "../core/SkGlyphCache.h"
#include "SkUtils.h"
#include "SkAutoKern.h"
static inline int is_ws(int c)
{
@ -19,50 +15,7 @@ static inline int is_ws(int c)
static size_t linebreak(const char text[], const char stop[], const SkPaint& paint, SkScalar margin)
{
const char* start = text;
SkAutoGlyphCache ac(paint, NULL);
SkGlyphCache* cache = ac.getCache();
SkFixed w = 0;
SkFixed limit = SkScalarToFixed(margin);
SkAutoKern autokern;
const char* word_start = text;
int prevWS = true;
while (text < stop)
{
const char* prevText = text;
SkUnichar uni = SkUTF8_NextUnichar(&text);
int currWS = is_ws(uni);
const SkGlyph& glyph = cache->getUnicharMetrics(uni);
if (!currWS && prevWS)
word_start = prevText;
prevWS = currWS;
w += autokern.adjust(glyph) + glyph.fAdvanceX;
if (w > limit)
{
if (currWS) // eat the rest of the whitespace
{
while (text < stop && is_ws(SkUTF8_ToUnichar(text)))
text += SkUTF8_CountUTF8Bytes(text);
}
else // backup until a whitespace (or 1 char)
{
if (word_start == start)
{
if (prevText > start)
text = prevText;
}
else
text = word_start;
}
break;
}
}
return text - start;
return paint.breakText(text, stop - text, margin);
}
int SkTextLineBreaker::CountLines(const char text[], size_t len, const SkPaint& paint, SkScalar width)