static void copyClosingSubpathsApplierFunction(void* info, const CGPathElement* element)
{
CGMutablePathRef path = static_cast<CGMutablePathRef>(info);
CGPoint* points = element->points;
switch (element->type) {
case kCGPathElementMoveToPoint:
if (!CGPathIsEmpty(path)) // to silence a warning when trying to close an empty path
CGPathCloseSubpath(path); // This is the only change from CGPathCreateMutableCopy
CGPathMoveToPoint(path, 0, points[0].x, points[0].y);
break;
case kCGPathElementAddLineToPoint:
CGPathAddLineToPoint(path, 0, points[0].x, points[0].y);
break;
case kCGPathElementAddQuadCurveToPoint:
CGPathAddQuadCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y);
break;
case kCGPathElementAddCurveToPoint:
CGPathAddCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y);
break;
case kCGPathElementCloseSubpath:
CGPathCloseSubpath(path);
break;
}
}
DRAW_TEST_P(CGContextFillMode, OverlappedEllipses) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
bounds = CGRectInset(bounds, 16.f, 16.f);
CGFloat width = bounds.size.width;
CGFloat height = bounds.size.height;
CGFloat xstart = bounds.origin.x;
CGFloat ystart = bounds.origin.y;
CGPathDrawingMode fillMode = GetParam();
CGMutablePathRef leftCircles = CGPathCreateMutable();
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(leftCircles);
CGMutablePathRef rightCircles = CGPathCreateMutable();
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(rightCircles);
CGContextAddPath(context, leftCircles);
CGContextAddPath(context, rightCircles);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextSetRGBStrokeColor(context, 1, 0, 0, 1);
CGContextDrawPath(context, fillMode);
CGPathRelease(leftCircles);
CGPathRelease(rightCircles);
}
static CGMutablePathRef copyCGPathClosingSubpaths(CGPathRef originalPath)
{
CGMutablePathRef path = CGPathCreateMutable();
CGPathApply(originalPath, path, copyClosingSubpathsApplierFunction);
CGPathCloseSubpath(path);
return path;
}
void Path::closeSubpath()
{
// FIXME: Unclear if close commands should have meaning for a null path.
if (isNull())
return;
CGPathCloseSubpath(m_path);
}
void doRotatedEllipsesWithCGPath(CGContextRef context)
{
int i, totreps = 144.;
CGMutablePathRef path = NULL;
float tint = 1., tintIncrement = 1./totreps;
// Create a new transform consisting of a 45 degree rotation.
CGAffineTransform theTransform = CGAffineTransformMakeRotation(M_PI/4);
// Apply a scaling transformation to the transform just created.
theTransform = CGAffineTransformScale(theTransform, 1, 2);
// Create a mutable CGPath object.
path = CGPathCreateMutable();
if(!path){
fprintf(stderr, "Couldn't create path!\n");
return;
}
// Add a circular arc to the CGPath object, transformed
// by an affine transform.
CGPathAddArc(path, &theTransform, 0., 0., 45., 0., 2*M_PI, false);
// Close the CGPath object.
CGPathCloseSubpath(path);
// Place the first ellipse at a good location.
CGContextTranslateCTM(context, 100., 100.);
for (i = 0 ; i < totreps ; i++){
CGContextBeginPath(context);
// Add the CGPath object to the current path in the context.
CGContextAddPath(context, path);
// Set the fill color for this instance of the ellipse.
CGContextSetRGBFillColor(context, tint, 0., 0., 1.);
// Filling the path implicitly closes it.
CGContextFillPath(context);
// Compute the next tint color.
tint -= tintIncrement;
// Move over for the next ellipse.
CGContextTranslateCTM(context, 1, 0.);
}
// Release the path when done with it.
CGPathRelease(path);
}
static void
TranformCGPathApplierFunc(void *vinfo, const CGPathElement *element)
{
TransformApplier *info = reinterpret_cast<TransformApplier*>(vinfo);
switch (element->type) {
case kCGPathElementMoveToPoint:
{
CGPoint pt = element->points[0];
CGPathMoveToPoint(info->path, &info->transform, pt.x, pt.y);
break;
}
case kCGPathElementAddLineToPoint:
{
CGPoint pt = element->points[0];
CGPathAddLineToPoint(info->path, &info->transform, pt.x, pt.y);
break;
}
case kCGPathElementAddQuadCurveToPoint:
{
CGPoint cpt = element->points[0];
CGPoint pt = element->points[1];
CGPathAddQuadCurveToPoint(info->path, &info->transform, cpt.x, cpt.y, pt.x, pt.y);
break;
}
case kCGPathElementAddCurveToPoint:
{
CGPoint cpt1 = element->points[0];
CGPoint cpt2 = element->points[1];
CGPoint pt = element->points[2];
CGPathAddCurveToPoint(info->path, &info->transform, cpt1.x, cpt1.y, cpt2.x, cpt2.y, pt.x, pt.y);
break;
}
case kCGPathElementCloseSubpath:
{
CGPathCloseSubpath(info->path);
break;
}
}
}
static CGPathRef createPathForGlyph(HDC hdc, Glyph glyph)
{
CGMutablePathRef path = CGPathCreateMutable();
static const MAT2 identity = { 0, 1, 0, 0, 0, 0, 0, 1 };
GLYPHMETRICS glyphMetrics;
// GGO_NATIVE matches the outline perfectly when Windows font smoothing is off.
// GGO_NATIVE | GGO_UNHINTED does not match perfectly either when Windows font smoothing is on or off.
DWORD outlineLength = GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, 0, 0, &identity);
ASSERT(outlineLength >= 0);
if (outlineLength < 0)
return path;
Vector<UInt8> outline(outlineLength);
GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, outlineLength, outline.data(), &identity);
unsigned offset = 0;
while (offset < outlineLength) {
LPTTPOLYGONHEADER subpath = reinterpret_cast<LPTTPOLYGONHEADER>(outline.data() + offset);
ASSERT(subpath->dwType == TT_POLYGON_TYPE);
if (subpath->dwType != TT_POLYGON_TYPE)
return path;
CGPathMoveToPoint(path, 0, toCGFloat(subpath->pfxStart.x), toCGFloat(subpath->pfxStart.y));
unsigned subpathOffset = sizeof(*subpath);
while (subpathOffset < subpath->cb) {
LPTTPOLYCURVE segment = reinterpret_cast<LPTTPOLYCURVE>(reinterpret_cast<UInt8*>(subpath) + subpathOffset);
switch (segment->wType) {
case TT_PRIM_LINE:
for (unsigned i = 0; i < segment->cpfx; i++)
CGPathAddLineToPoint(path, 0, toCGFloat(segment->apfx[i].x), toCGFloat(segment->apfx[i].y));
break;
case TT_PRIM_QSPLINE:
for (unsigned i = 0; i < segment->cpfx; i++) {
CGFloat x = toCGFloat(segment->apfx[i].x);
CGFloat y = toCGFloat(segment->apfx[i].y);
CGFloat cpx;
CGFloat cpy;
if (i == segment->cpfx - 2) {
cpx = toCGFloat(segment->apfx[i + 1].x);
cpy = toCGFloat(segment->apfx[i + 1].y);
i++;
} else {
cpx = (toCGFloat(segment->apfx[i].x) + toCGFloat(segment->apfx[i + 1].x)) / 2;
cpy = (toCGFloat(segment->apfx[i].y) + toCGFloat(segment->apfx[i + 1].y)) / 2;
}
CGPathAddQuadCurveToPoint(path, 0, x, y, cpx, cpy);
}
break;
case TT_PRIM_CSPLINE:
for (unsigned i = 0; i < segment->cpfx; i += 3) {
CGFloat cp1x = toCGFloat(segment->apfx[i].x);
CGFloat cp1y = toCGFloat(segment->apfx[i].y);
CGFloat cp2x = toCGFloat(segment->apfx[i + 1].x);
CGFloat cp2y = toCGFloat(segment->apfx[i + 1].y);
CGFloat x = toCGFloat(segment->apfx[i + 2].x);
CGFloat y = toCGFloat(segment->apfx[i + 2].y);
CGPathAddCurveToPoint(path, 0, cp1x, cp1y, cp2x, cp2y, x, y);
}
break;
default:
ASSERT_NOT_REACHED();
return path;
}
subpathOffset += sizeof(*segment) + (segment->cpfx - 1) * sizeof(segment->apfx[0]);
}
CGPathCloseSubpath(path);
offset += subpath->cb;
}
return path;
}
void Path::closeSubpath()
{
CGPathCloseSubpath(m_path);
}
void
PathBuilderCG::Close()
{
if (!CGPathIsEmpty(mCGPath))
CGPathCloseSubpath(mCGPath);
}
void Path::closeSubpath()
{
if (!CGPathIsEmpty(m_path)) // to silence a warning when trying to close an empty path
CGPathCloseSubpath(m_path);
}
/*
Event handler for the content view that gets attached to the menu frame.
The content view will (eventually) contain the menu view.
*/
OSStatus ContentViewEventHandler(
EventHandlerCallRef inCallRef,
EventRef inEvent,
void *refcon)
{
OSStatus retVal = eventNotHandledErr;
if(GetEventClass(inEvent) == kEventClassMenu) {
return noErr;
} else
if(GetEventClass(inEvent) == kEventClassControl) {
HIViewRef hiSelf = NULL;
verify_noerr(GetEventParameter(inEvent, kEventParamDirectObject, typeControlRef, NULL, sizeof(hiSelf), NULL, &hiSelf));
if(hiSelf) {
HIRect frame;
HIViewGetFrame(hiSelf, &frame);
switch(GetEventKind(inEvent)) {
case kEventControlAddedSubControl : {
HIViewRef subControl;
ControlID subControlID;
GetEventParameter(inEvent, kEventParamControlSubControl, typeControlRef, NULL, sizeof(subControl), NULL, &subControl );
GetControlID(subControl, &subControlID);
// This should be comparing against kHIViewMenuContentID as shown inside the
// #if 0. At the time of this writing, however, using that constant causes a
// linker error (and a crash if you use ZeroLink). I extracted the signature
// and id by determining the value at run-time the value I compare against.
#if 0
if( kHIViewMenuContentID.signature == subControlID.signature && kHIViewMenuContentID.id == subControlID.id ) {
#else
if( 'menu' == subControlID.signature && 0 == subControlID.id ) {
#endif
// If we have the menu content view then set up some view bindings for it.
HIRect bounds;
HIViewGetBounds(hiSelf, &bounds);
HIViewSetFrame(subControl, &bounds);
HILayoutInfo contentLayout = {
kHILayoutInfoVersionZero,
{
{ NULL, kHILayoutBindTop },
{ NULL, kHILayoutBindLeft },
{ NULL, kHILayoutBindBottom },
{ NULL, kHILayoutBindRight }
},
{
{ NULL, kHILayoutScaleAbsolute, 0 },
{ NULL, kHILayoutScaleAbsolute, 0 }
},
{
{ NULL, kHILayoutPositionTop, 0 },
{ NULL, kHILayoutPositionLeft, 0 }
}
};
verify_noerr(HIViewSetLayoutInfo(subControl, &contentLayout));
}
retVal = noErr;
} break;
case kEventControlGetFrameMetrics :
HIViewFrameMetrics metrics;
// The offset from the frame view to the content view is
// given by the kFrameOffset constant
metrics.top = kFrameOffset;
metrics.left = kFrameOffset;
metrics.right = kFrameOffset;
metrics.bottom = kFrameOffset;
verify_noerr(SetEventParameter(inEvent, kEventParamControlFrameMetrics, typeControlFrameMetrics, sizeof(metrics), &metrics));
retVal = noErr;
break;
case kEventControlBoundsChanged :
case kEventControlOwningWindowChanged : {
// Maintain the QuickDraw port by changing its position to
// match that of the content view.
CGrafPtr windowPort = NULL;
WindowRef window = GetControlOwner(hiSelf);
if(window && (windowPort = GetWindowPort(window))) {
CGrafPtr savePort;
bool swapped = QDSwapPort(windowPort, &savePort);
MovePortTo((short) frame.origin.x, (short) frame.origin.y);
PortSize((short) frame.size.width, (short) frame.size.height);
if(swapped) {
QDSwapPort(savePort, NULL);
}
}
retVal = noErr;
} break;
} // switch
} // if (hiSelf)
}
return retVal;
}
/* ------------------------------------------ CreatePathForEntireStarMenu */
/*
Create a path shape for the star frame.
This looks an awful lot like CreatePathForEntireStarMenu in
StarMenu.cpp but takes the radius to use as a parameter and
then takes into account the kFrameOffest when creating the path.
In true Core Foundation style, this is a CreateXXX routine and the
caller is responsible for freeing the path that is returned.
*/
CGPathRef CreatePathForStarFrame(StarFrameData *menuData, float radius)
{
CGMutablePathRef retVal = CGPathCreateMutable();
MenuItemIndex numItems = CountMenuItems(menuData->menu);
if(numItems > 0) {
const CGPoint fullRadiusPoint = { radius, 0 };
const CGPoint halfRadiusPoint = { ((radius - kFrameOffset) / 2.0) + kFrameOffset , 0 };
float anglePerItem = 2 * pi / (float)numItems; // in radians naturally
float halfAngle = anglePerItem / 2.0;
CGPoint startPoint = halfRadiusPoint;
CGAffineTransform midRotate = CGAffineTransformMakeRotation(halfAngle);
CGPoint midPoint = CGPointApplyAffineTransform(fullRadiusPoint, midRotate);
CGAffineTransform rotateToNext = CGAffineTransformMakeRotation(anglePerItem);
CGPathMoveToPoint(retVal, NULL, startPoint.x, startPoint.y);
CGPathAddLineToPoint(retVal, NULL, midPoint.x, midPoint.y);
for(short ctr = 0; ctr < numItems; ctr++) {
startPoint = CGPointApplyAffineTransform(startPoint, rotateToNext);
midPoint = CGPointApplyAffineTransform(midPoint, rotateToNext);
CGPathAddLineToPoint(retVal, NULL, startPoint.x, startPoint.y);
CGPathAddLineToPoint(retVal, NULL, midPoint.x, midPoint.y);
}
CGPathCloseSubpath(retVal);
}
return retVal;
}
