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Implemented text layout SetColor on OS X.

This commit is contained in:
Pietro Gagliardi 2016-04-19 16:06:50 -04:00
parent 7a568f6bf4
commit e786d664cb
2 changed files with 28 additions and 4 deletions
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25
darwin/drawtext.m
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@ -600,3 +600,28 @@ void doDrawText(CGContextRef c, CGFloat cheight, double x, double y, uiDrawTextL
y -= yoff;
CGContextSetTextPosition(c, x, y);
#endif
// TODO length - 1?
#define rangeToCFRange() CFRangeMake(startChar, endChar - startChar)
void uiDrawTextLayoutSetColor(uiDrawTextLayout *layout, intmax_t startChar, intmax_t endChar, double r, double g, double b, double a)
{
CGColorSpaceRef colorspace;
CGFloat components[4];
CGColorRef color;
// for consistency with windows, use sRGB
colorspace = CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
components[0] = r;
components[1] = g;
components[2] = b;
components[3] = a;
color = CGColorCreate(colorspace, components);
CGColorSpaceRelease(colorspace);
CFAttributedStringSetAttribute(layout->mas,
rangeToCFRange(),
kCTForegroundColorAttributeName,
color);
CGColorRelease(color); // TODO safe?
}

7
test/page10.c
View File

@ -30,7 +30,6 @@ static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *dp)
// TODO
memset(&desc, 0, sizeof (uiDrawTextFontDescriptor));
family = uiEntryText(textFont);
desc.Family = "Arial";
desc.Size = 36;
desc.Weight = uiDrawTextWeightNormal;
@ -38,11 +37,11 @@ static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *dp)
desc.Stretch = uiDrawTextStretchNormal;
font = uiDrawLoadClosestFont(&desc);
layout = uiDrawNewTextLayout(s, "One two three four", -1);
uiDrawTextLayoutSetForegroundColor(layout,
layout = uiDrawNewTextLayout("One two three four", font, -1);
uiDrawTextLayoutSetColor(layout,
4, 7,
1, 0, 0, 1);
uiDrawTextLayoutSetForegroundColor(layout,
uiDrawTextLayoutSetColor(layout,
8, 14,
1, 0, 0.5, 0.5);
uiDrawText(dp->Context, 10, 10, layout);