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);
}
}
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 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);
}
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);
}
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);
}