void drawRoundedRect(CGContextRef context, CGRect rrect)
{
// Drawing with a white stroke color
CGContextSetRGBStrokeColor(context, 0.3, 0.3, 0.3, 1.0);
CGContextSetRGBFillColor(context, 0.3, 0.3, 0.3, 1.0);
// Add Rect to the current path, then stroke it
// CGContextAddRect(context, CGRectMake(10.0, 190.0, 290.0, 73.0));
CGContextSetLineWidth(context, 1);
CGFloat radius = 10.0;
CGFloat minx = CGRectGetMinX(rrect), midx = CGRectGetMidX(rrect), maxx = CGRectGetMaxX(rrect);
CGFloat miny = CGRectGetMinY(rrect), midy = CGRectGetMidY(rrect), maxy = CGRectGetMaxY(rrect);
// Next, we will go around the rectangle in the order given by the figure below.
// minx midx maxx
// miny 2 3 4
// midy 1 9 5
// maxy 8 7 6
// Which gives us a coincident start and end point, which is incidental to this technique, but still doesn't
// form a closed path, so we still need to close the path to connect the ends correctly.
// Thus we start by moving to point 1, then adding arcs through each pair of points that follows.
// You could use a similar tecgnique to create any shape with rounded corners.
// Start at 1
CGContextMoveToPoint(context, minx, midy);
// Add an arc through 2 to 3
CGContextAddArcToPoint(context, minx, miny, midx, miny, radius);
// Add an arc through 4 to 5
CGContextAddArcToPoint(context, maxx, miny, maxx, midy, radius);
// Add an arc through 6 to 7
CGContextAddArcToPoint(context, maxx, maxy, midx, maxy, radius);
// Add an arc through 8 to 9
CGContextAddArcToPoint(context, minx, maxy, minx, midy, radius);
// Close the path
CGContextClosePath(context);
// Fill & stroke the path
CGContextDrawPath(context, kCGPathFillStroke);
CGContextSetRGBStrokeColor(context, 0.0, 0.0, 0.0, 0.0);
CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
CGContextMoveToPoint(context, minx, midy);
// Add an arc through 2 to 3
CGContextAddArcToPoint(context, minx, miny, midx, miny, radius);
// Add an arc through 4 to 5
CGContextAddArcToPoint(context, maxx, miny, maxx, midy, radius);
// Add an arc through 6 to 7
CGContextAddArcToPoint(context, maxx, maxy, midx, maxy, radius);
// Add an arc through 8 to 9
CGContextAddArcToPoint(context, minx, maxy, minx, midy, radius);
// Close the path
CGContextClosePath(context);
// Fill & stroke the path
CGContextDrawPath(context, kCGPathFillStroke);
}
// This method is only used to draw the little circles used in lists.
void GraphicsContext::drawEllipse(const IntRect& rect)
{
// FIXME: CG added CGContextAddEllipseinRect in Tiger, so we should be able to quite easily draw an ellipse.
// This code can only handle circles, not ellipses. But khtml only
// uses it for circles.
ASSERT(rect.width() == rect.height());
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
float r = (float)rect.width() / 2;
CGContextAddArc(context, rect.x() + r, rect.y() + r, r, 0, 2*M_PI, true);
CGContextClosePath(context);
if (fillColor().alpha()) {
if (strokeStyle() != NoStroke)
// stroke and fill
CGContextDrawPath(context, kCGPathFillStroke);
else
CGContextFillPath(context);
} else if (strokeStyle() != NoStroke)
CGContextStrokePath(context);
}
void GraphicsContext::drawConvexPolygon(size_t npoints, const FloatPoint* points, bool shouldAntialias)
{
if (paintingDisabled())
return;
if (npoints <= 1)
return;
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextSetShouldAntialias(context, shouldAntialias);
CGContextBeginPath(context);
CGContextMoveToPoint(context, points[0].x(), points[0].y());
for (size_t i = 1; i < npoints; i++)
CGContextAddLineToPoint(context, points[i].x(), points[i].y());
CGContextClosePath(context);
if (fillColor().alpha())
CGContextEOFillPath(context);
if (strokeStyle() != NoStroke)
CGContextStrokePath(context);
CGContextRestoreGState(context);
}
static void AddRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth, float ovalHeight)
{
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0)
{
CGContextAddRect(context, rect);
return;
}
CGContextSaveGState(context);
CGContextTranslateCTM (context, CGRectGetMinX(rect),
CGRectGetMinY(rect));
CGContextScaleCTM (context, ovalWidth, ovalHeight);
fw = CGRectGetWidth (rect) / ovalWidth;
fh = CGRectGetHeight (rect) / ovalHeight;
CGContextMoveToPoint(context, fw, fh / 2);
CGContextAddArcToPoint(context, fw, fh, fw / 2, fh, 1);
CGContextAddArcToPoint(context, 0, fh, 0, fh / 2, 1);
CGContextAddArcToPoint(context, 0, 0, fw / 2, 0, 1);
CGContextAddArcToPoint(context, fw, 0, fw, fh / 2, 1);
CGContextClosePath(context);
CGContextRestoreGState(context);
}
void CFX_QuartzDeviceDriver::setPathToContext(const CFX_PathData* pathData)
{
FX_INT32 count = pathData->GetPointCount();
FX_PATHPOINT* points = pathData->GetPoints();
CGContextBeginPath(_context);
for (FX_INT32 i = 0; i < count; i ++) {
switch (points[i].m_Flag & FXPT_TYPE) {
case FXPT_MOVETO:
CGContextMoveToPoint(_context, points[i].m_PointX, points[i].m_PointY);
break;
case FXPT_LINETO:
CGContextAddLineToPoint(_context, points[i].m_PointX, points[i].m_PointY);
break;
case FXPT_BEZIERTO: {
CGContextAddCurveToPoint(_context,
points[i].m_PointX, points[i].m_PointY,
points[i + 1].m_PointX, points[i + 1].m_PointY,
points[i + 2].m_PointX, points[i + 2].m_PointY);
i += 2;
}
}
if (points[i].m_Flag & FXPT_CLOSEFIGURE) {
CGContextClosePath(_context);
}
}
}
void drawRoundedRect(CGContextRef context, int x, int y){
struct CGRect cgRect;
struct CGPoint cgPoint;
cgRect.size.width = 640;
cgRect.size.height = y+30;
cgPoint.x = 0;
cgPoint.y = 5;
cgRect.origin = cgPoint;
//printf("Drawing %f, %f, %f, %f", cgPoint.x, cgPoint.y, cgRect.size.width, cgRect.size.height);
CGContextBeginPath(context);
float ovalWidth = 10;
float ovalHeight = 10;
float fw, fh;
// If the width or height of the corner oval is zero, then it reduces to a right angle,
// so instead of a rounded rectangle we have an ordinary one.
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, cgRect);
return;
}
// Save the context's state so that the translate and scale can be undone with a call
// to CGContextRestoreGState.
CGContextSaveGState(context);
// Translate the origin of the contex to the lower left corner of the rectangle.
CGContextTranslateCTM(context, CGRectGetMinX(cgRect), CGRectGetMinY(cgRect));
//Normalize the scale of the context so that the width and height of the arcs are 1.0
CGContextScaleCTM(context, ovalWidth, ovalHeight);
// Calculate the width and height of the rectangle in the new coordinate system.
fw = CGRectGetWidth(cgRect) / ovalWidth;
fh = CGRectGetHeight(cgRect) / ovalHeight;
// CGContextAddArcToPoint adds an arc of a circle to the context's path (creating the rounded
// corners). It also adds a line from the path's last point to the begining of the arc, making
// the sides of the rectangle.
CGContextMoveToPoint(context, fw, fh/2); // Start at lower right corner
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1); // Top right corner
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1); // Top left corner
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1); // Lower left corner
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // Back to lower right
// Close the path
CGContextClosePath(context);
CGContextSetRGBFillColor (context, 1, 1, 1, 0.7);
CGContextFillPath(context);
CGContextRestoreGState(context);
}
static void addRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth,
float ovalHeight)
{
float fw, fh;
// If either ovalWidth or ovalHeight is 0, draw a regular rectangle.
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, rect);
}else{
CGContextSaveGState(context);
// Translate to lower-left corner of rectangle.
CGContextTranslateCTM(context, CGRectGetMinX(rect),
CGRectGetMinY(rect));
// Scale by the oval width and height so that
// each rounded corner is 0.5 units in radius.
CGContextScaleCTM(context, ovalWidth, ovalHeight);
// Unscale the rectangle width by the amount of the X scaling.
fw = CGRectGetWidth(rect) / ovalWidth;
// Unscale the rectangle height by the amount of the Y scaling.
fh = CGRectGetHeight(rect) / ovalHeight;
// Start at the right edge of the rect, at the midpoint in Y.
CGContextMoveToPoint(context, fw, fh/2);
// Segment 1
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 0.5);
// Segment 2
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 0.5);
// Segment 3
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 0.5);
// Segment 4
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 0.5);
// Closing the path adds the last segment.
CGContextClosePath(context);
CGContextRestoreGState(context);
}
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawEllipse (const CRect &rect, const CDrawStyle drawStyle)
{
CGContextRef context = beginCGContext (true, currentState.drawMode.integralMode ());
if (context)
{
CGPathDrawingMode m;
switch (drawStyle)
{
case kDrawFilled : m = kCGPathFill; break;
case kDrawFilledAndStroked : m = kCGPathFillStroke; break;
default : m = kCGPathStroke; break;
}
applyLineStyle (context);
if (rect.width () != rect.height ())
{
CGContextSaveGState (context);
CGContextBeginPath (context);
CGRect cgRect = CGRectMake (rect.left, rect.top, rect.width (), rect.height ());
CGPoint center = CGPointMake (CGRectGetMidX (cgRect), CGRectGetMidY (cgRect));
CGFloat a = CGRectGetWidth (cgRect) / 2.;
CGFloat b = CGRectGetHeight (cgRect) / 2.;
CGContextTranslateCTM (context, center.x, center.y);
CGContextScaleCTM (context, a, b);
CGContextMoveToPoint (context, 1, 0);
CGContextAddArc (context, 0, 0, 1, radians (0), radians (360), 0);
CGContextClosePath (context);
CGContextRestoreGState (context);
CGContextDrawPath (context, m);
}
else
{
CGFloat radius = rect.width () * 0.5;
CGContextBeginPath (context);
CGContextAddArc (context, rect.left + radius, rect.top + radius, radius, radians (0), radians (360), 0);
CGContextClosePath (context);
CGContextDrawPath (context, m);
}
releaseCGContext (context);
}
}
void JBGFillTriangle(CGContextRef ctx, CGPoint point_a, CGPoint point_b, CGPoint point_c, CGColorRef color)
{
CGContextBeginPath(ctx);
CGPoint points[] = {point_a, point_b, point_c};
CGContextAddLines(ctx, points, sizeof(points) / sizeof(points[0]));
CGContextClosePath(ctx);
CGContextSetFillColorWithColor(ctx, color);
CGContextFillPath(ctx);
}
void MacDock::overlay(const QString& text)
{
if (text.isEmpty()) {
overlayed = false;
RestoreApplicationDockTileImage();
return;
}
// Create the context
CGContextRef context = BeginCGContextForApplicationDockTile();
if (!overlayed) {
overlayed = true;
// Add some subtle drop down shadow
// FIXME: Disabled because 10.2 doesn't support it
//CGSize s = { 2.0, -4.0 };
//CGContextSetShadow(context,s,5.0);
}
// Draw a circle
CGContextBeginPath(context);
CGContextAddArc(context, 95.0, 95.0, 25.0, 0.0, 2 * M_PI, true);
CGContextClosePath(context);
CGContextSetRGBFillColor(context, 1, 0.0, 0.0, 1);
CGContextFillPath(context);
// Set the clipping path to the same circle
CGContextBeginPath(context);
CGContextAddArc(context, 95.0, 95.0, 25.0, 0.0, 2 * M_PI, true);
CGContextClip(context);
// Remove drop shadow
// FIXME: Disabled because 10.2 doesn't support it
//CGSize s = { 0.0, -0.0 };
//CGContextSetShadowWithColor(context, s, 0, NULL);
// Select the appropriate font
CGContextSelectFont(context,DOCK_FONT_NAME, DOCK_FONT_SIZE, kCGEncodingMacRoman);
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
// Draw the text invisible
CGPoint begin = CGContextGetTextPosition(context);
CGContextSetTextDrawingMode(context, kCGTextInvisible);
CGContextShowTextAtPoint(context, begin.x, begin.y, text.toStdString().c_str(), text.length());
CGPoint end = CGContextGetTextPosition(context);
// Draw the text
CGContextSetTextDrawingMode(context, kCGTextFill);
CGContextShowTextAtPoint(context, 95 - (end.x - begin.x)/2, 95 - 8, text.toStdString().c_str(), text.length());
// Cleanup
CGContextFlush(context);
EndCGContextForApplicationDockTile(context);
}
static void
gdk_quartz_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
GdkPoint *points,
gint npoints)
{
CGContextRef context = gdk_quartz_drawable_get_context (drawable, FALSE);
int i;
if (!context)
return;
if (!_gdk_quartz_gc_update_cg_context (gc, drawable, context,
filled ?
GDK_QUARTZ_CONTEXT_FILL :
GDK_QUARTZ_CONTEXT_STROKE))
{
gdk_quartz_drawable_release_context (drawable, context);
return;
}
if (filled)
{
CGContextMoveToPoint (context, points[0].x, points[0].y);
for (i = 1; i < npoints; i++)
CGContextAddLineToPoint (context, points[i].x, points[i].y);
CGContextClosePath (context);
CGContextFillPath (context);
}
else
{
CGContextMoveToPoint (context, points[0].x + 0.5, points[0].y + 0.5);
for (i = 1; i < npoints; i++)
CGContextAddLineToPoint (context, points[i].x + 0.5, points[i].y + 0.5);
CGContextClosePath (context);
CGContextStrokePath (context);
}
gdk_quartz_drawable_release_context (drawable, context);
}
static void quartzgen_polygon(GVJ_t *job, pointf *A, int n, int filled)
{
/* convert polygon into the current path */
CGContextRef context = (CGContextRef)job->context;
CGContextMoveToPoint(context, A[0].x, A[0].y);
int i;
for (i = 1; i < n; ++i)
CGContextAddLineToPoint(context, A[i].x, A[i].y);
CGContextClosePath(context);
/* draw the ellipse */
quartzgen_path(job, filled);
}
void doEgg(CGContextRef context)
{
CGPoint p0 = {0., 0.}, p1 = {0., 200.};
CGPoint c1 = {140., 5.}, c2 = {80., 198.};
CGContextTranslateCTM(context, 100., 5.);
CGContextBeginPath(context);
CGContextMoveToPoint(context, p0.x, p0.y);
// Create the BŽzier path segment for the right side of the egg.
CGContextAddCurveToPoint(context, c1.x, c1.y, c2.x, c2.y, p1.x, p1.y);
// Create the BŽzier path segment for the left side of the egg.
CGContextAddCurveToPoint(context, -c2.x, c2.y, -c1.x, c1.y, p0.x, p0.y);
CGContextClosePath(context);
CGContextSetLineWidth(context, 2);
CGContextDrawPath(context, kCGPathStroke);
}
void addRoundedRectToPath(CGContextRef context, CGRect rect, CGFloat radius) {
CGFloat minX = CGRectGetMinX(rect);
CGFloat minY = CGRectGetMinY(rect);
CGFloat maxX = CGRectGetMaxX(rect);
CGFloat maxY = CGRectGetMaxY(rect);
CGFloat midX = CGRectGetMidX(rect);
CGFloat midY = CGRectGetMidY(rect);
CGContextBeginPath(context);
CGContextMoveToPoint(context, maxX, midY);
CGContextAddArcToPoint(context, maxX, maxY, midX, maxY, radius);
CGContextAddArcToPoint(context, minX, maxY, minX, midY, radius);
CGContextAddArcToPoint(context, minX, minY, midX, minY, radius);
CGContextAddArcToPoint(context, maxX, minY, maxX, midY, radius);
CGContextClosePath(context);
}
bool GiCanvasIos::rawPath(const GiContext* ctx,
int count, const Point2d* pxs, const UInt8* types)
{
CGContextBeginPath(m_draw->getContext());
for (int i = 0; i < count; i++)
{
switch (types[i] & ~kGiCloseFigure)
{
case kGiMoveTo:
CGContextMoveToPoint(m_draw->getContext(), pxs[i].x, pxs[i].y);
break;
case kGiLineTo:
CGContextAddLineToPoint(m_draw->getContext(), pxs[i].x, pxs[i].y);
break;
case kGiBeziersTo:
if (i + 2 >= count)
return false;
CGContextAddCurveToPoint(m_draw->getContext(),
pxs[i+0].x, pxs[i+0].y,
pxs[i+1].x, pxs[i+1].y,
pxs[i+2].x, pxs[i+2].y);
i += 2;
break;
default:
return false;
}
if (types[i] & kGiCloseFigure)
CGContextClosePath(m_draw->getContext());
}
bool usepen = m_draw->setPen(ctx);
bool usebrush = m_draw->setBrush(ctx);
bool ret = count > 1 && (usepen || usebrush);
if (ret) {
CGContextDrawPath(m_draw->getContext(), usepen && usebrush ? kCGPathFillStroke
: usepen ? kCGPathStroke : kCGPathFill);
}
return ret;
}
void paintArc(CGContextRef context, CGRect r, int startAngle, int arcAngle)
{
float start, end;
// Signal the start of a path
CGContextBeginPath(context);
// Set the start of the path to the arcs focal point
CGContextMoveToPoint(context, r.origin.x + r.size.width/2, r.origin.y + r.size.height/2);
// Add to the path the arc of the oval that fits inside the rectangle.
pathForArc(context,r,startAngle,arcAngle);
// Complete the path closing the arc at the focal point
CGContextClosePath(context);
// Fill the path
CGContextFillPath(context);
}
bool GiCanvasIos::rawPolygon(const GiContext* ctx, const Point2d* pxs, int count)
{
bool usepen = m_draw->setPen(ctx);
bool usebrush = m_draw->setBrush(ctx);
bool ret = count > 1 && (usepen || usebrush);
if (ret)
{
CGContextMoveToPoint(m_draw->getContext(), pxs[0].x, pxs[0].y);
for (int i = 1; i < count; i++) {
CGContextAddLineToPoint(m_draw->getContext(), pxs[i].x, pxs[i].y);
}
CGContextClosePath(m_draw->getContext());
CGContextDrawPath(m_draw->getContext(), usepen && usebrush ? kCGPathFillStroke
: usepen ? kCGPathStroke : kCGPathFill);
}
return ret;
}
static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,
float ovalHeight)
{
float fw, fh;
// If the width or height of the corner oval is zero, then it reduces to a right angle,
// so instead of a rounded rectangle we have an ordinary one.
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, rect);
return;
}
// Save the context's state so that the translate and scale can be undone with a call
// to CGContextRestoreGState.
CGContextSaveGState(context);
// Translate the origin of the contex to the lower left corner of the rectangle.
CGContextTranslateCTM(context, CGRectGetMinX(rect), CGRectGetMinY(rect));
//Normalize the scale of the context so that the width and height of the arcs are 1.0
CGContextScaleCTM(context, ovalWidth, ovalHeight);
// Calculate the width and height of the rectangle in the new coordinate system.
fw = CGRectGetWidth(rect) / ovalWidth;
fh = CGRectGetHeight(rect) / ovalHeight;
// CGContextAddArcToPoint adds an arc of a circle to the context's path (creating the rounded
// corners). It also adds a line from the path's last point to the begining of the arc, making
// the sides of the rectangle.
CGContextMoveToPoint(context, fw, fh/2); // Start at lower right corner
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1); // Top right corner
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1); // Top left corner
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1); // Lower left corner
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // Back to lower right
// Close the path
CGContextClosePath(context);
// Restore the context's state. This removes the translation and scaling
// but leaves the path, since the path is not part of the graphics state.
CGContextRestoreGState(context);
}
static void createEllipsePath(CGContextRef context, CGPoint center,
CGSize ellipseSize)
{
CGContextSaveGState(context);
// Translate the coordinate origin to the center point.
CGContextTranslateCTM(context, center.x, center.y);
// Scale the coordinate system to half the width and height
// of the ellipse.
CGContextScaleCTM(context,
ellipseSize.width/2, ellipseSize.height/2);
CGContextBeginPath(context);
// Add a circular arc to the path, centered at the origin and
// with a radius of 1.0. This radius, together with the
// scaling above for the width and height, produces an ellipse
// of the correct size.
CGContextAddArc(context, 0.0, 0.0, 1.0, 0.0, DEGREES_TO_RADIANS(360.0), 0.0);
// Close the path so that this path is suitable for stroking,
// should that be desired.
CGContextClosePath(context);
CGContextRestoreGState(context);
}
/*****************************************************
*
* Internal_HICustomViewHandler(inHandlerCallRef, inEvent, inUserData)
*
* Purpose: Event handler that implements our HICustomView custom view
*
* Inputs: inHandlerCallRef - reference to the current handler call chain
* inEvent - the event
* inUserData - app-specified data you passed in the call to InstallEventHandler
*
* Returns: OSStatus - error code (0 == no error)
*/
static pascal OSStatus Internal_HICustomViewHandler(EventHandlerCallRef inHandlerCallRef, EventRef inEvent, void * inUserData)
{
OSStatus status = eventNotHandledErr;
HICustomViewData * myData = (HICustomViewData *)inUserData;
switch (GetEventClass(inEvent))
{
case kEventClassHIObject:
switch (GetEventKind(inEvent))
{
case kEventHIObjectConstruct:
{
// allocate some instance data
myData = (HICustomViewData *) calloc(1, sizeof(HICustomViewData));
require_action(myData != NULL, ConstructExit, status = memFullErr);
// get our superclass instance
HIViewRef epView;
status = GetEventParameter(inEvent, kEventParamHIObjectInstance, typeHIObjectRef, NULL, sizeof(epView), NULL, &epView);
require_noerr(status, ConstructExit);
// remember our superclass in our instance data
myData->view = epView;
// store our instance data into the event
status = SetEventParameter(inEvent, kEventParamHIObjectInstance, typeVoidPtr, sizeof(myData), &myData);
require_noerr(status, ConstructExit);
ConstructExit:
break;
}
#pragma mark * kEventHIObjectInitialize
case kEventHIObjectInitialize:
{
// always begin kEventHIObjectInitialize by calling through to the previous handler
status = CallNextEventHandler(inHandlerCallRef, inEvent);
require_noerr(status, InitializeExit);
// if that succeeded, do our own initialization
// in this sample code, there is nothing to do
InitializeExit:
break;
}
case kEventHIObjectDestruct:
{
// freeing our storage
if (myData != NULL) free(myData);
status = noErr;
break;
}
default:
break;
}
break;
case kEventClassControl:
switch (GetEventKind(inEvent))
{
#pragma mark * kEventControlDraw
case kEventControlDraw:
{
CGContextRef context;
status = GetEventParameter(inEvent, kEventParamCGContextRef, typeCGContextRef, NULL, sizeof(context), NULL, &context);
require_noerr(status, ControlDrawExit);
HIRect bounds, viewBounds;
HIViewGetBounds(myData->view, &viewBounds);
// setting our colors according to state: IsControlEnabled, IsControlActive, IsControlHilited
if (!IsControlEnabled(myData->view))
{
CGContextSetRGBFillColor(context, 0.3, 0.3, 0.3, 0.8);
CGContextSetRGBStrokeColor(context, 0.5, 0.5, 0.5, 0.8);
}
else if (!IsControlActive(myData->view))
{
CGContextSetRGBFillColor(context, 0.7, 0.7, 0.7, 0.8);
CGContextSetRGBStrokeColor(context, 0.8, 0.8, 0.8, 0.8);
}
else if (!IsControlHilited(myData->view))
{
CGContextSetRGBFillColor(context, 1, 0, 0, 0.8);
CGContextSetRGBStrokeColor(context, 0, 0, 1, 0.8);
}
else
{
CGContextSetRGBFillColor(context, 0.7, 0, 0, 0.8);
CGContextSetRGBStrokeColor(context, 0, 0, 0.7, 0.8);
}
// using a line thickness of 3
CGContextSetLineWidth(context, 3);
bounds = CGRectInset(viewBounds, 3, 3);
float minDim = (bounds.size.height < bounds.size.width) ? bounds.size.height / 2 : bounds.size.width / 2;
float cx = bounds.origin.x + minDim, cy = bounds.origin.y + minDim;
UInt32 i, n = GetControl32BitValue(myData->view);
// having some fun with geometric shapes based on the value of the custom view
CGContextBeginPath(context);
switch (n)
{
case 0: CGContextAddArc(context, cx, cy, minDim, 0, 2 * pi, true); break;
case 1: CGContextAddEllipseInRect(context, CGRectInset(bounds, bounds.size.width * 0.4, 0)); break;
default:
{
float deltangle = pi / n, angle = 0, r = minDim / 2;
CGContextMoveToPoint(context, cx + minDim, cy);
for (i = 0; i < n; i++)
{
angle += deltangle;
CGContextAddLineToPoint(context, cx + r * cos(angle), cy + r * sin(angle));
angle += deltangle;
CGContextAddLineToPoint(context, cx + minDim * cos(angle), cy + minDim * sin(angle));
}
CGContextAddLineToPoint(context, cx + minDim, cy);
}
}
CGContextClosePath(context);
CGContextDrawPath(context, kCGPathFillStroke);
status = noErr;
ControlDrawExit:
break;
}
#pragma mark * kEventControl___Changed
case kEventControlValueFieldChanged:
case kEventControlHiliteChanged:
{
// just asking for a refresh
HIViewSetNeedsDisplay(myData->view, true);
break;
}
default:
break;
}
break;
default:
break;
}
return status;
} // Internal_HICustomViewHandler
static void
gdk_quartz_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2)
{
CGContextRef context = gdk_quartz_drawable_get_context (drawable, FALSE);
float start_angle, end_angle;
gboolean clockwise = FALSE;
if (!context)
return;
if (!_gdk_quartz_gc_update_cg_context (gc, drawable, context,
filled ?
GDK_QUARTZ_CONTEXT_FILL :
GDK_QUARTZ_CONTEXT_STROKE))
{
gdk_quartz_drawable_release_context (drawable, context);
return;
}
start_angle = angle1 * 2.0 * G_PI / 360.0 / 64.0;
end_angle = start_angle + angle2 * 2.0 * G_PI / 360.0 / 64.0;
/* angle2 is relative to angle1 and can be negative, which switches
* the drawing direction
*/
if (angle2 < 0)
clockwise = TRUE;
/* below, flip the coordinate system back to its original y-diretion
* so the angles passed to CGContextAddArc() are interpreted as
* expected
*
* FIXME: the implementation below works only for perfect circles
* (width == height). Any other aspect ratio either scales the
* line width unevenly or scales away the path entirely for very
* small line widths (esp. for line_width == 0, which is a hair
* line on X11 but must be approximated with the thinnest possible
* line on quartz).
*/
if (filled)
{
CGContextTranslateCTM (context,
x + width / 2.0,
y + height / 2.0);
CGContextScaleCTM (context, 1.0, - (double)height / (double)width);
CGContextMoveToPoint (context, 0, 0);
CGContextAddArc (context, 0, 0, width / 2.0,
start_angle, end_angle,
clockwise);
CGContextClosePath (context);
CGContextFillPath (context);
}
else
{
CGContextTranslateCTM (context,
x + width / 2.0 + 0.5,
y + height / 2.0 + 0.5);
CGContextScaleCTM (context, 1.0, - (double)height / (double)width);
CGContextAddArc (context, 0, 0, width / 2.0,
start_angle, end_angle,
clockwise);
CGContextStrokePath (context);
}
gdk_quartz_drawable_release_context (drawable, context);
}
bool GiCanvasIos::rawClosePath()
{
CGContextClosePath(m_draw->getContext());
return true;
}
void structGraphicsScreen :: v_polyline (long numberOfPoints, double *xyDC, bool close) {
#if cairo
if (duringXor) {
#if ALLOW_GDK_DRAWING
gdkPrepareLine (this);
for (long i = 0; i < numberOfPoints - 1; i ++) {
gdk_draw_line (our d_window, our d_gdkGraphicsContext,
xyDC [i + i], xyDC [i + i + 1], xyDC [i + i + 2], xyDC [i + i + 3]);
}
gdkRevertLine (this);
gdk_flush ();
#endif
} else {
if (our d_cairoGraphicsContext == NULL) return;
cairoPrepareLine (this);
// cairo_new_path (d_cairoGraphicsContext); // move_to() automatically creates a new path
cairo_move_to (our d_cairoGraphicsContext, xyDC [0], xyDC [1]);
for (long i = 1; i < numberOfPoints; i ++) {
cairo_line_to (our d_cairoGraphicsContext, xyDC [i + i], xyDC [i + i + 1]);
}
if (close) cairo_close_path (our d_cairoGraphicsContext);
cairo_stroke (our d_cairoGraphicsContext);
cairoRevertLine (this);
}
#elif win
winPrepareLine (this);
POINT *points = Melder_malloc (POINT, numberOfPoints + close);
if (points) {
for (long i = 0; i < numberOfPoints; i ++) {
points [i]. x = *xyDC, xyDC ++;
points [i]. y = *xyDC, xyDC ++;
}
if (close)
points [numberOfPoints] = points [0];
Polyline (our d_gdiGraphicsContext, points, numberOfPoints + close);
if (our d_fatNonSolid) {
for (long i = 0; i < numberOfPoints; i ++)
points [i]. x -= 1;
if (close)
points [numberOfPoints] = points [0];
Polyline (our d_gdiGraphicsContext, points, numberOfPoints + close);
for (long i = 0; i < numberOfPoints; i ++) {
points [i]. x += 1;
points [i]. y -= 1;
}
if (close)
points [numberOfPoints] = points [0];
Polyline (our d_gdiGraphicsContext, points, numberOfPoints + close);
}
}
DEFAULT
#elif mac
GraphicsQuartz_initDraw (this);
quartzPrepareLine (this);
CGContextBeginPath (our d_macGraphicsContext);
CGContextMoveToPoint (our d_macGraphicsContext, xyDC [0], xyDC [1]); // starts a new subpath
for (long i = 1; i < numberOfPoints; i ++) {
CGContextAddLineToPoint (our d_macGraphicsContext, xyDC [i + i], xyDC [i + i + 1]);
}
if (close)
CGContextClosePath (our d_macGraphicsContext); // closes only the subpath
CGContextStrokePath (our d_macGraphicsContext);
quartzRevertLine (this);
GraphicsQuartz_exitDraw (this);
#endif
}
