যারা তাদের কোড পোস্ট করেছেন তাদের সবাইকে অনেক ধন্যবাদ। এটি খুব দরকারী।
গোষ্ঠীযুক্ত টেবিল ভিউ সেলগুলির জন্য হাইলাইটের রঙ পরিবর্তন করার জন্য আমি একই ধরণের সমাধান পেয়েছি। মূলত ইউআইটিএবলভিউসেল এর নির্বাচিতব্যাকগ্রাউন্ডভিউ (ব্যাকগ্রাউন্ডভিউ নয়)। এমনকি আইফোন ওএস Which.০ এ এখনও এই পিটা সমাধান দরকার, যতদূর আমি বলতে পারি ...
নীচের কোডটিতে একটি শক্ত রঙের পরিবর্তে গ্রেডিয়েন্টের সাথে হাইলাইটটি রেন্ডার করার পরিবর্তন রয়েছে। এছাড়াও সীমান্ত রেন্ডারিং সরানো হয়। উপভোগ করুন।
//
// CSCustomCellBackgroundView.h
//
#import <UIKit/UIKit.h>
typedef enum
{
CustomCellBackgroundViewPositionTop,
CustomCellBackgroundViewPositionMiddle,
CustomCellBackgroundViewPositionBottom,
CustomCellBackgroundViewPositionSingle,
CustomCellBackgroundViewPositionPlain
} CustomCellBackgroundViewPosition;
@interface CSCustomCellBackgroundView : UIView
{
CustomCellBackgroundViewPosition position;
CGGradientRef gradient;
}
@property(nonatomic) CustomCellBackgroundViewPosition position;
@end
//
// CSCustomCellBackgroundView.m
//
#import "CSCustomCellBackgroundView.h"
#define ROUND_SIZE 10
static void addRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth,float ovalHeight);
@implementation CSCustomCellBackgroundView
@synthesize position;
- (BOOL) isOpaque
{
return NO;
}
- (id)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame])
{
// Initialization code
const float* topCol = CGColorGetComponents([[UIColor redColor] CGColor]);
const float* bottomCol = CGColorGetComponents([[UIColor blueColor] CGColor]);
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
/*
CGFloat colors[] =
{
5.0 / 255.0, 140.0 / 255.0, 245.0 / 255.0, 1.00,
1.0 / 255.0, 93.0 / 255.0, 230.0 / 255.0, 1.00,
};*/
CGFloat colors[]=
{
topCol[0], topCol[1], topCol[2], topCol[3],
bottomCol[0], bottomCol[1], bottomCol[2], bottomCol[3]
};
gradient = CGGradientCreateWithColorComponents(rgb, colors, NULL, sizeof(colors)/(sizeof(colors[0])*4));
CGColorSpaceRelease(rgb);
}
return self;
}
-(void)drawRect:(CGRect)rect
{
// Drawing code
CGContextRef c = UIGraphicsGetCurrentContext();
if (position == CustomCellBackgroundViewPositionTop)
{
CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ;
CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ;
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
maxy = maxy ;
CGContextMoveToPoint(c, minx, maxy);
CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE);
CGContextAddArcToPoint(c, maxx, miny, maxx, maxy, ROUND_SIZE);
CGContextAddLineToPoint(c, maxx, maxy);
// Close the path
CGContextClosePath(c);
CGContextSaveGState(c);
CGContextClip(c);
CGContextDrawLinearGradient(c, gradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
CGContextRestoreGState(c);
return;
}
else if (position == CustomCellBackgroundViewPositionBottom)
{
CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ;
CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ;
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
maxy = maxy - 1;
CGContextMoveToPoint(c, minx, miny);
CGContextAddArcToPoint(c, minx, maxy, midx, maxy, ROUND_SIZE);
CGContextAddArcToPoint(c, maxx, maxy, maxx, miny, ROUND_SIZE);
CGContextAddLineToPoint(c, maxx, miny);
// Close the path
CGContextClosePath(c);
CGContextSaveGState(c);
CGContextClip(c);
CGContextDrawLinearGradient(c, gradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
CGContextRestoreGState(c);
return;
}
else if (position == CustomCellBackgroundViewPositionMiddle)
{
CGFloat minx = CGRectGetMinX(rect) , maxx = CGRectGetMaxX(rect) ;
CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ;
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
maxy = maxy ;
CGContextMoveToPoint(c, minx, miny);
CGContextAddLineToPoint(c, maxx, miny);
CGContextAddLineToPoint(c, maxx, maxy);
CGContextAddLineToPoint(c, minx, maxy);
// Close the path
CGContextClosePath(c);
CGContextSaveGState(c);
CGContextClip(c);
CGContextDrawLinearGradient(c, gradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
CGContextRestoreGState(c);
return;
}
else if (position == CustomCellBackgroundViewPositionSingle)
{
CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ;
CGFloat miny = CGRectGetMinY(rect) , midy = CGRectGetMidY(rect) , maxy = CGRectGetMaxY(rect) ;
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
maxy = maxy - 1;
CGContextMoveToPoint(c, minx, midy);
CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE);
CGContextAddArcToPoint(c, maxx, miny, maxx, midy, ROUND_SIZE);
CGContextAddArcToPoint(c, maxx, maxy, midx, maxy, ROUND_SIZE);
CGContextAddArcToPoint(c, minx, maxy, minx, midy, ROUND_SIZE);
// Close the path
CGContextClosePath(c);
CGContextSaveGState(c);
CGContextClip(c);
CGContextDrawLinearGradient(c, gradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
CGContextRestoreGState(c);
return;
}
else if (position == CustomCellBackgroundViewPositionPlain) {
CGFloat minx = CGRectGetMinX(rect);
CGFloat miny = CGRectGetMinY(rect), maxy = CGRectGetMaxY(rect) ;
CGContextDrawLinearGradient(c, gradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
return;
}
}
- (void)dealloc
{
CGGradientRelease(gradient);
[super dealloc];
}
- (void) setPosition:(CustomCellBackgroundViewPosition)inPosition
{
if(position != inPosition)
{
position = inPosition;
[self setNeedsDisplay];
}
}
@end
static void addRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth,float ovalHeight)
{
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0) {// 1
CGContextAddRect(context, rect);
return;
}
CGContextSaveGState(context);// 2
CGContextTranslateCTM (context, CGRectGetMinX(rect),// 3
CGRectGetMinY(rect));
CGContextScaleCTM (context, ovalWidth, ovalHeight);// 4
fw = CGRectGetWidth (rect) / ovalWidth;// 5
fh = CGRectGetHeight (rect) / ovalHeight;// 6
CGContextMoveToPoint(context, fw, fh/2); // 7
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1);// 8
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1);// 9
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1);// 10
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // 11
CGContextClosePath(context);// 12
CGContextRestoreGState(context);// 13
}