ZMJGanttChart

Introduce

Full configurable sheet view user interfaces for iOS applications. With this framework, you can easily create complex layouts like schedule, gantt chart or timetable as if you are using Excel.

Features

Fixed column and row headers
Merge cells
Circular infinite scrolling automatically
Customize gridlines and borders for each cell
Customize inter cell spacing vertically and horizontally
Fast scrolling, memory efficient
UICollectionView like API
Well unit tested

Find the above displayed 4 examples in the `Examples` folder.

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

SpreadsheetView is written in Objective-c 2.0 Compatible with iOS 8.0+

Installation

ZMJGanttChart is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'ZMJGanttChart'

Getting Started

The minimum requirement is connecting a data source to return the number of columns/rows, and each column width/row height.

#import <UIKit/UIKit.h>
#import <ZMJGanttChart/ZMJGanttChart.h>

@interface ViewController () <SpreadsheetViewDelegate, SpreadsheetViewDataSource>
@property (nonatomic, strong) SpreadsheetView *spreadsheetView;
@end

@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];

    self.spreadsheetView.delegate = self;
    self.spreadsheetView.dataSource = self;
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    [self.spreadsheetView flashScrollIndicators];
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    if (@available(iOS 11.0, *)) {
        self.spreadsheetView.frame = self.view.safeAreaLayoutGuide.layoutFrame;
    } else {
        //Fallback on earlier version
        self.spreadsheetView.frame = self.view.bounds;
    }
}

#pragma mark - getters
- (SpreadsheetView *)spreadsheetView {
    if (!_spreadsheetView) {
        _spreadsheetView = ({
        SpreadsheetView *ssv = [SpreadsheetView new];
        ssv.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        [self.view addSubview:ssv];
        ssv;
        });
    }
    return _spreadsheetView;
}

// MARK: DataSource
- (NSInteger)numberOfColumns:(SpreadsheetView *)spreadsheetView {
    return 10;
}

- (NSInteger)numberOfRows:(SpreadsheetView *)spreadsheetView {
    return 20;
}

- (CGFloat)spreadsheetView:(SpreadsheetView *)spreadsheetView widthForColumn:(NSInteger)column {
    return 120.f;
}

- (CGFloat)spreadsheetView:(SpreadsheetView *)spreadsheetView heightForRow:(NSInteger)row {
    return 40;
}

@end

Usage

Freeze column and row headers

Freezing a column or row behaves as a fixed column/row header.

Column Header

- (NSInteger)frozenColumns:(SpreadsheetView *)spreadsheetView {
    return 2;
}

Row Header

- (NSInteger)frozenRows:(SpreadsheetView *)spreadsheetView {
    return 2;
}

both

- (NSInteger)frozenColumns:(SpreadsheetView *)spreadsheetView {
    return 2;
}

- (NSInteger)frozenRows:(SpreadsheetView *)spreadsheetView {
    return 2;
}

Merge cells

Multiple cells can be merged and then they are treated as one cell. It is used for grouping cells.

- (NSArray<ZMJCellRange *> *)mergedCells:(SpreadsheetView *)spreadsheetView {
    return @[
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:1 column:1] to:[Location locationWithRow:3 column:2]]],
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:3 column:3] to:[Location locationWithRow:8 column:3]]],
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:4 column:0] to:[Location locationWithRow:7 column:2]]],
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:2 column:4] to:[Location locationWithRow:5 column:8]]],
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:9 column:0] to:[Location locationWithRow:10 column:5]]],
    [ZMJCellRange cellRangeFrom:[Location locationWithRow:11 column:2] to:[Location locationWithRow:12 column:4]]],
    ];
}

Circular Scrolling

Your table acquires infinite scroll just set circularScrolling property.

Enable horizontal circular scrolling

spreadsheetView.circularScrolling = [Configuration instance].horizontally;

Enable vertical circular scrolling

spreadsheetView.circularScrolling = [Configuration instance].vertically;

Both

spreadsheetView.circularScrolling = [Configuration instance].both

If circular scrolling is enabled, you can set additional parameters that the option not to repeat column/row header and to extend column/row header to the left/top edges. CircularScrolling.Configuration is a builder pattern, can easily select the appropriate combination by chaining properties.

e.g.

spreadsheetView.circularScrolling = [CircularScrollingConfigurationBuilder configurationBuilderWithCircularScrollingState:ZMJCircularScrolling_horizontally_columnHeaderNotRepeated];

spreadsheetView.circularScrolling = [CircularScrollingConfigurationBuilder configurationBuilderWithCircularScrollingState:ZMJCircularScrolling_both_columnHeaderStartsFirstRow;

Customize gridlines, borders and cell spacing

You can customize the appearance of grid lines and borders of the cell. You can specify whether a cell has a grid line or border. Grid lines and borders can be displayed on the left, right, top, or bottom, or around all four sides of the cell.

The difference between gridlines and borders is that the gridlines are drawn at the center of the inter-cell spacing, but the borders are drawn to fit around the cell.

Cell spacing

spreadsheetView.intercellSpacing = CGSizeMake(1, 1);

Gridlines

SpreadsheetView's gridStyle property is applied to the entire table.

spreadsheetView.gridStyle = [GridStyle style:GridStyle_solid width:1 color:[UIColor lightGray]];

You can set different gridStyle for each cell and each side of the cell. If you set cell's gridStyle property to default, SpreadsheetView's gridStyle property will be applied. Specify none means the grid will not be drawn.

cell.gridlines.top   = [GridStyle style:GridStyle_solid width:1 color:[UIColor blue]];
cell.gridlines.left  = [GridStyle style:GridStyle_solid width:1 color:[UIColor blue]];
cell.gridlines.bottom= [GridStyle borderStyleNone];
cell.gridlines.right = [GridStyle borderStyleNone];

Border

You can set different borderStyle for each cell as well.

cell.borders.top   = [GridStyle style:GridStyle_solid width:1 color:[UIColor red]];
cell.borders.left  = [GridStyle style:GridStyle_solid width:1 color:[UIColor red]];
cell.borders.bottom= [GridStyle style:GridStyle_solid width:1 color:[UIColor red]];
cell.borders.right = [GridStyle style:GridStyle_solid width:1 color:[UIColor red]];

Author

keshiim, [email protected]

License

ZMJGanttChart is available under the MIT license. See the LICENSE file for more info.

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