Description: a map is built by obtained data, contains two arrows and three tooltips.
#import <MapCharting/MapChart.h>
#import <MapCharting/MapChart2D.h>
#import "MapDataSource.h"
@interface ViewController : UIViewController<MapChartDelegate>{
MapChart2D *m_view; // 2D map
MapDataSource *datasource; // Data source
}
@end
#import "ViewController.h"
#import <MapCharting/MapTopobase.h>
#import <MapCharting/MapAreaVisual.h>
#import "SolidColorBrush.h"
#import "DataDependency.h"
#import <MapCharting/MapTooltip.h>
#import <MapCharting/MapLabel.h>
#import <MapCharting/MapLegend.h>
#import <MapCharting/MapShape.h>
#import "UIColor+transition.h"
#import <MapCharting/MapLabel.h>
#import <MapCharting/MapChartSign.h>
#import <MapCharting/MapArrow.h>
#import <MapCharting/MapFilledArrow.h>
#import <MapCharting/MapBarVisual.h>
#import <MapCharting/MapPieVisual.h>
#import "UIColor+hex.h"
@implementation ViewController
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Load data from source
datasource = [[MapDataSource alloc]initWithFileName:@"data.txt"];
// Determine minimu and maximum data values
[datasource prepare];
// Create a map based on loaded data
[self dataSourceFinishedLoadData];
}
// Creates a map based on loaded data
- (void)dataSourceFinishedLoadData
{
// Create a 2D map
m_view = [[MapChart2D alloc] init];
// Load file with topobase
NSData *file = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"world.svg" ofType:nil]];
// Create and set object for working with map topobase
MapTopobase *topobase = [[MapTopobase alloc] initWithData:file];
[m_view setTopobase: topobase];
// Determine affine transformation applied to all map areas
[topobase setTransform: CGAffineTransformIdentity];
[m_view setClipsToBounds:YES];
// Disable map zoom
[m_view setZoomEnabled:NO];
// Create an object for working with map factor
MapAreaVisual *visual = [[MapAreaVisual alloc] init];
// Set data source
[visual setDataSource: datasource];
/* Determine whether map area background fill parameters
depend on the data source */
[[visual background] setIsDependent:YES];
// Create an object for working with map layer
MapLayer *layer = [[m_view topobase] rootLayer];
// Create a tooltip for layer
layer.tooltip = [MapTooltip new];
// Set colors for filling map layer area background
NSArray *colors = [NSArray arrayWithObjects:@"ff462c", @"ebaf36", @"ffd900", @"b1ca40", @"6a8535", nil];
// Determine minimum map value
double value = [datasource minValue];
// Determine map scale step
double step = (datasource.maxValue - datasource.minValue) / [colors count];
// Determine correspondence between map scale intervals and layer area background fill colors
ValueScale *scale = [[ValueScale new] autorelease];
for (int i = 1; i <[colors count]; i++) {
value += step;
[scale.value addObject:[NSNumber numberWithDouble:value]];
// Determine colors for the Less value
UIColor *lessColor = [UIColor colorWithHex:[colors objectAtIndex:(i - 1)]];
[scale.less addObject:[SolidColorBrush solidColorBrushWithColor:lessColor]];
// Determine colors for the Equal or Greater value
UIColor *equalColor = [UIColor colorWithHex:[colors objectAtIndex:(i)]];
[scale.equal addObject:[SolidColorBrush solidColorBrushWithColor:equalColor]];
[scale.greater addObject:[SolidColorBrush solidColorBrushWithColor:equalColor]];
}
// Set map scale
[[visual background] setScale:scale];
// Set brush for map background fill
[m_view setBackground:[SolidColorBrush solidColorBrushWithColor:[UIColor whiteColor]]];
// Set map title color
m_view.caption.textColor = [UIColor blackColor];
// Set label text for map layer areas, for which there is not data
[m_view setNoDataText: NSLocalizedString(@"NO_DATA", nil)];
// Create a brush for filling map layer areas with that have no data
SolidColorBrush *brush = [[[SolidColorBrush alloc] init] autorelease];
// Set brush transparency
[brush setOpacity: 0.2];
// Set brush color
brush.color = [UIColor grayColor];
// Set this brush
[[[visual background] scale] setNoData: brush];
Thickness th = {0};
th.top = 20;
th.bottom = 20;
// Determine title text
[[m_view caption] setText: NSLocalizedString(@"WORLD_MAP", nil)];
// Set title margin
[[m_view caption] setMargin: th];
// Determine font parameters
[[m_view caption] setFont:[UIFont systemFontOfSize:18]];
// Use text direction from left to right
[m_view setUsingRightToLeft: NO];
// Get map legend
MapLegend *legend = [m_view legend];
// Hide legend
[legend setVisibility:NO];
// Get timeline
MapTimeAxis *timeAxis = [m_view timeAxis];
// Hide timeline
[timeAxis setHidden: YES];
// Create an arrow between regions
MapArrow *arrow1 = [MapArrow new];
// Set label text
arrow1.text = NSLocalizedString(@"MAP_ARROW_1", nil);;
// Set label text color
arrow1.textColor = [UIColor blackColor];
// Set fill color
SolidColorBrush *br = [SolidColorBrush new];
[br setColor:[UIColor lightGrayColor]];
// Set label background
arrow1.textBackground = br;
// Set font family
arrow1.fontName = @"Arial";
// Set font size
arrow1.fontSize = 15.0;
// Set map area, in which arrow starts
arrow1.startShape = [layer shapeWithId:@"US"];
// Set map area, in which arrow ends
arrow1.endShape = [layer shapeWithId:@"RU"];
// Set arrow bend angle
arrow1.angle = 0;
// Set border line color
arrow1.strokeColor = [UIColor blackColor];
// Set border line thickness
arrow1.strokeThickness = 1.0;
// Set border line type
arrow1.strokeStyle = StrokeStyleSolid;
// Set arrow pointer width
[arrow1 setPointerWidth:10];
// Set arrow pointer length
[arrow1 setPointerLength:20];
CGPoint start = {100.0,50.0};
arrow1.startPoint = start; // Map point, in which arrow starts
CGPoint end = {300.0,450.0};
arrow1.endPoint = end; // Map point, in which arrow ends
// Arrow between map points
MapFilledArrow *arrow2 = [MapFilledArrow new];
arrow2.base = 10;
arrow2.fill = br;
// Set label text
arrow2.text = NSLocalizedString(@"MAP_ARROW_2", nil);
// Set label text color
arrow2.textColor = [UIColor blackColor];
arrow2.textAlignment = UITextAlignmentCenter;
arrow2.textOrientation = TextOrientationAlongTheArrow;
// Set brush color
[br setColor:[UIColor lightGrayColor]];
// Set label background
arrow2.textBackground = [br autorelease];
CGPoint st = {100.0,50.0};
// Set map point, in which arrow starts
arrow1.startPoint = st;
CGPoint en = {300.0,450.0};
// Set map point, in which arrow ends
arrow2.endPoint = en;
// Set arrow bend angle
arrow2.angle = 10;
// Set border line color
arrow2.strokeColor = [UIColor blackColor];
// Set border line thickness
arrow2.strokeThickness = 2.0;
// Set border line type
arrow2.strokeStyle = StrokeStyleSolid;
// Set arrow pointer width
[arrow2 setPointerWidth:30];
// Set arrow pointer length
[arrow2 setPointerLength:50];
// Create an array of arrows
NSArray *arrows = [NSArray arrayWithObjects:arrow1,arrow2, nil];
[m_view setArrows:arrows];
// Display arrows
[m_view setShowArrows:YES];
// Create tooltips for map areas
NSArray *countries = [NSArray arrayWithObjects:@"AU", @"CN", @"RU", nil];
for(int i = 0; i < [countries count]; i++) {
MapShape *shape = [layer shapeWithId: [countries objectAtIndex:i]];
shape.strokeColor = [UIColor darkGrayColor];
shape.strokeThickness = 2.0;
MapTooltip *tip = [MapTooltip new];
tip.visibility = YES;
tip.text = shape.title;
tip.font = [UIFont fontWithName:@"Arial" size:14];
tip.background = [SolidColorBrush solidColorBrushWithColor:[UIColor whiteColor]];
tip.borderColor = [UIColor blackColor];
tip.borderThickness = 1.0;
tip.borderRadius = 3.0;
Thickness pad = {2.0,2.0,2.0,2.0};
tip.padding = pad;
shape.tooltip = tip;
}
/* Add an object for working with map factor
into array of visual elements corresponding to child layers and areas */
[[layer visuals] addObject: visual];
// Add map layer to array of displayed layers
[[m_view layers] addObject:layer];
[self setView:m_view];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
// Set new map size
struct CGRect frame;
frame = CGRectMake(0, 0, 375, 470);
[m_view setFrame:frame];
// Set gray color border
[[m_view layer] setBorderColor: [[UIColor colorWithRed:0.75 green:0.75 blue:0.75 alpha:1] CGColor]];
[[m_view layer] setBorderWidth: 1.0f];
}
- (void)mapChartDidAppear:(MapChart *)mapChart {
}
@end
See also: