Description: creating a map with timeline, which data is loaded from file.
#import <MapCharting/MapChart.h>
#import <MapCharting/MapChart2D.h>
#import "MapDataSource.h"
#import "CustomMap.h"
@interface ViewController : UIViewController {
CustomMap *m_view; // 2D map
MapDataSource *datasource; // Map 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"
#import "CustomMap.h"
#import "CustomMapBubblePopoverView.h"
@implementation ViewController
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Load data from source
datasource = [[MapDataSource alloc]initWithFileName:@"data.txt"];
// Determine minimum 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 = [[CustomMap alloc] init];
// Load file with topobase
NSData *file = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"world.svg" ofType:nil]];
// Create a set an 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 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];
// Create 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 no data
[m_view setNoDataText: NSLocalizedString(@"NO_DATA", nil)];
// Create a brush for filling map layer areas 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];
// Set map scale
[legend setValueScale: scale];
// Align legend by map center
[legend setBlockAlignment: NWLegendBlockAlignmentBottomCenter];
// Set legend margins
Thickness margin = {0,20,0,0};
[legend setMargin:margin];
// Set text color and legend font parameters
[legend setTextColor:[UIColor blackColor]];
[legend setFont:[UIFont systemFontOfSize:12]];
// Set the Less interval record format
NSString *lessFormat = [NSMutableString stringWithString:NSLocalizedString(@"LESS_FORMAT", nil)];
[legend setLessFormat:lessFormat];
// Set the Greater interval record format
NSString *greaterFormat = [NSMutableString stringWithString:NSLocalizedString(@"GREATER_FORMAT", nil)];
[legend setGreaterFormat:greaterFormat];
// Create legend top text
MapLabel *header = [[MapLabel new] autorelease];
[header setText: NSLocalizedString(@"HEADER_TEXT", nil)];
// Set text font parameters
[header setFont: [UIFont systemFontOfSize:14]];
[header setTextColor:[UIColor blackColor]];
// Set text margins
Thickness headerMargin = {5, 0, 0, 0};
[header setMargin:headerMargin];
// Set legend top text
[[m_view legend] setHeader:header];
// Set marker shape for map legend
[legend setMarkerShape: MarkerShapeRectangle];
// Set legend orientation
[legend setOrientation: NWLegendOrientationFreeVertical];
// Set legend position
CGPoint pt = {[m_view legend].origin.x, 325};
[legend setOrigin: pt];
// Get timeline
MapTimeAxis *timeAxis = [m_view timeAxis];
// Display timeline
[timeAxis setHidden: NO];
// Set object containing methods for working with timeline
[timeAxis setDelegate: m_view];
// Set data source
[timeAxis setDataSource:datasource];
// Set up animation delay
[timeAxis setDelayTime: AnimateTypeSlow];
// Set font parameters for timeline
[timeAxis setFont:[UIFont fontWithName:@"Arial" size:16]];
// Set minimum distance in points between two neighbor axis tick marks
[timeAxis setMinTickSpacing:1.0];
// Set blue color for timeline tick marks
[timeAxis setTickColor: [UIColor blueColor]];
/* Set time of moving from one axis value
to other one during animation playback */
[timeAxis setJumpTime: AnimateTypeNormal];
// Set current timeline slider position
[m_view.timeAxis setIndex:0];
// Create and display label over the current timeline slider position
MapTooltip *caption = [[MapTooltip new] autorelease];
[caption setVisibility:YES];
[timeAxis setLabel: caption];
/* Add an object for working with map factor
to 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];
// Set three map layer areas
NSMutableArray *shapes = [[NSMutableArray new] autorelease];
NSArray *shapesIds = [NSArray arrayWithObjects:@"AU", @"RU", @"BR", nil];
for (NSString *id in shapesIds) {
MapShape *shape = [[[m_view layers] objectAtIndex:0] shapeWithId:id];
[shapes addObject:shape];
}
/* Display popup window for the AU map layer area
with arrow position in the right top window corner */
[self showBubblePopoverForShape:[shapes objectAtIndex:0] withOrientation:PopoverArrowRightTop];
/* Display popup window for the RU map layer area
with optimum arrow position */
[self showBubblePopoverForShape:[shapes objectAtIndex:1] withOrientation:NAN];
/* Display popup window for the BR map layer area
with arrow position in the middle of the bottom window border */
[self showBubblePopoverForShape:[shapes objectAtIndex:2] withOrientation:PopoverArrowBottom];
}
// Displays popup windows for map layer areas
-(void)showBubblePopoverForShape:(MapShape *) shape withOrientation:(BubblePopoverViewArrowOrientation) arrowOrientation {
// Create a popup window
CustomMapBubblePopoverView *popover = [[CustomMapBubblePopoverView new] autorelease];
// Determine popup window size
CGSize contentSize = CGSizeMake(60, 30);
[popover setContentSize:contentSize];
// Determine left top point of this window
CGPoint originPoint = [shape centerPoint];
// Transform SVG map coordinates into screen coordinates
originPoint = [self convertOriginalPointToScreen:originPoint];
// Determine popup window arrow position
if (arrowOrientation == NAN) {
CGRect baseRect;
baseRect.origin = originPoint;
baseRect.size = contentSize;
// Place arrow optimally
[popover alignArrowForOrigin:originPoint inRect: baseRect];
} else {
[popover setArrowOrientation: arrowOrientation];
}
// Calculate and set optimum window size and position
CGRect frame = [popover computeRectForOrigin:originPoint];
frame.size = contentSize;
[popover setFrame:frame];
// Set popup window border color
[popover setBorderColor:[UIColor grayColor]];
// Set text color
[popover setTintColor:[UIColor blackColor]];
// Set window background color
MapPlaced *placed = [[MapPlaced new] autorelease];
[placed setBackground:[SolidColorBrush solidColorBrushWithColor:[UIColor lightTextColor]]];
// Set window border rounding radius
[placed setBorderRadius:12];
// Set window border thickness
[placed setBorderThickness:2];
/* Set map layer area identifier,
for which a popup window is displayed */
[placed setID:[shape ID]];
[popover setPlaced:placed];
// Display popup window
[m_view addSubview:popover];
}
// Transforms SVG map coordinates into screen coordinates
- (CGPoint) convertOriginalPointToScreen: (CGPoint) originalPoint {
CGFloat coef = [m_view boundsWithMargin].size.width / ([m_view pivot].x * 2);
originalPoint.x *= coef;
originalPoint.x += 15;
CGFloat topoCoef = [m_view pivot].y / [m_view pivot].x;
originalPoint.y *= coef;
originalPoint.y += ([m_view boundsWithMargin].size.height -
[m_view boundsWithMargin].size.width * topoCoef)/2;
originalPoint.y += -4;
return originalPoint;
}
@end
See also: