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SSCanvasView.m
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SSCanvasView.m
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//
// SSCanvas.m
// Seuss for iPad
//
// Created by Cory Kilger on 7/20/12.
// Copyright (c) 2012 Cory Kilger. All rights reserved.
//
#import "SSCanvasView.h"
#import "SSStatementView.h"
#import "SSVariableView.h"
#import <QuartzCore/QuartzCore.h>
#import <Seuss/Seuss.h>
@interface SSCanvasView ()
@property (strong) NSMutableArray * commandViews;
@property (strong) NSMutableArray * variableViews;
@property (strong) NSMutableArray * statementViews;
@property (strong) SSStatementView * movingStatement;
@property (strong) SSVariableView * movingVariable;
@property (strong) UIScrollView * mainView;
@property (strong) UIScrollView * commandResevoir;
@property (strong) UIScrollView * variableResevoir;
@end
@implementation SSCanvasView
@synthesize commandViews = _commandViews;
@synthesize variableViews = _variableViews;
@synthesize statementViews = _statementViews;
@synthesize movingStatement = _movingStatement;
@synthesize movingVariable = _movingVariable;
@synthesize mainView = _mainView;
@synthesize commandResevoir = _commandResevoir;
@synthesize variableResevoir = _variableResevoir;
- (void)initialize {
_commandViews = [[NSMutableArray alloc] init];
_variableViews = [[NSMutableArray alloc] init];
_statementViews = [[NSMutableArray alloc] init];
CGFloat resevoirWidth = 320;
UIImageView *backgroundImg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"workarea_bg_only.png"]];
[self addSubview:backgroundImg];
[self sendSubviewToBack:backgroundImg];
CGRect commandFrame = self.bounds;
commandFrame.origin.x = commandFrame.size.width - resevoirWidth;
commandFrame.size.width = resevoirWidth;
commandFrame.size.height = floorf(commandFrame.size.height / 2);
self.commandResevoir = [[UIScrollView alloc] initWithFrame:commandFrame];
//self.commandResevoir.backgroundColor = [UIColor colorWithRed:0.9 green:0.9 blue:1.0 alpha:1.0];
self.commandResevoir.backgroundColor = [UIColor clearColor];
[self addSubview:self.commandResevoir];
commandFrame.origin.y = CGRectGetMaxY(commandFrame);
commandFrame.size.height = CGRectGetMaxY(self.bounds) - commandFrame.origin.y;
self.variableResevoir = [[UIScrollView alloc] initWithFrame:commandFrame];
//self.variableResevoir.backgroundColor = [UIColor colorWithRed:1.0 green:0.9 blue:0.9 alpha:1.0];
self.variableResevoir.backgroundColor = [UIColor clearColor];
[self addSubview:self.variableResevoir];
CGRect mainViewFrame = self.bounds;
mainViewFrame.size.width -= resevoirWidth;
self.mainView = [[UIScrollView alloc] initWithFrame:mainViewFrame];
self.mainView.backgroundColor = [UIColor clearColor];
[self addSubview:self.mainView];
self.mainView.clipsToBounds = NO;
}
- (void)awakeFromNib {
[self initialize];
}
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self initialize];
}
return self;
}
- (void)addStatement:(NSString *)statement {
SSStatementView * view = [[SSStatementView alloc] initWithStatement:statement];
[view addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
[view addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowOpacity = 0.6;
view.layer.shadowOffset = CGSizeMake(0.0, 1.0);
view.layer.shadowRadius = 3.0;
view.layer.cornerRadius = 3.0;
[self.commandViews addObject:view];
[self.commandResevoir addSubview:view];
[self setNeedsLayout];
}
- (void)addVariable:(NSString *)variable {
SSVariableView * view = [[SSVariableView alloc] initWithVariable:variable];
[view addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(moveVariable:)]];
[view addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveVariable:)]];
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowOpacity = 0.6;
view.layer.shadowOffset = CGSizeMake(0.0, 1.0);
view.layer.shadowRadius = 3.0;
view.layer.cornerRadius = 3.0;
[self.variableViews addObject:view];
[self.variableResevoir addSubview:view];
[self setNeedsLayout];
}
- (void)moveStatement:(UIGestureRecognizer *)gesture {
SSStatementView * view = (SSStatementView *)[gesture view];
CGPoint point = [gesture locationInView:self.mainView];
switch (gesture.state) {
case UIGestureRecognizerStateBegan: {
if (!self.movingStatement) {
SSStatementView * movingView = view;
if ([self.commandViews containsObject:movingView]) {
movingView = [[SSStatementView alloc] initWithStatement:view.statement];
[movingView addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
[movingView addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
movingView.layer.shadowColor = [[UIColor blackColor] CGColor];
movingView.layer.shadowOpacity = 0.6;
movingView.layer.shadowOffset = CGSizeMake(0.0, 1.0);
movingView.layer.shadowRadius = 3.0;
movingView.layer.cornerRadius = 3.0;
}
else {
[self.statementViews removeObject:movingView];
}
movingView.center = point;
[self.mainView addSubview:movingView];
self.movingStatement = movingView;
[UIView animateWithDuration:0.1 animations:^{
movingView.transform = CGAffineTransformMakeScale(1.25, 1.25);
movingView.alpha = 0.6;
movingView.layer.shadowOpacity = 0.1;
}];
}
} break;
case UIGestureRecognizerStateChanged: {
self.movingStatement.center = point;
[UIView animateWithDuration:0.1 animations:^{
[self layoutStatements];
}];
} break;
case UIGestureRecognizerStateEnded: {
SSStatementView * movingView = self.movingStatement;
self.movingStatement = nil;
if (CGRectContainsPoint(self.mainView.frame, point)) {
NSUInteger index = 0;
for (SSStatementView * statementView in self.statementViews) {
if (CGRectGetMidY(statementView.frame) < movingView.center.y)
index++;
else
break;
}
[self.statementViews insertObject:movingView atIndex:index];
[UIView animateWithDuration:0.1 animations:^{
movingView.transform = CGAffineTransformIdentity;
movingView.alpha = 1.0;
movingView.center = point;
movingView.layer.shadowOpacity = 0.6;
[self layoutStatements];
} completion:^(BOOL finished) {
[movingView removeFromSuperview];
}];
}
else {
[UIView animateWithDuration:0.1 animations:^{
movingView.transform = CGAffineTransformMakeScale(3.0, 3.0);
movingView.alpha = 0.0;
movingView.center = point;
[self layoutStatements];
} completion:^(BOOL finished) {
[movingView removeFromSuperview];
}];
}
} break;
default:
break;
}
}
- (void)moveVariable:(UIGestureRecognizer *)gesture {
SSVariableView * view = (SSVariableView *)[gesture view];
CGPoint point = [gesture locationInView:self.mainView];
switch (gesture.state) {
case UIGestureRecognizerStateBegan: {
if (!self.movingVariable) {
SSVariableView * movingView = view;
if ([self.variableViews containsObject:movingView]) {
movingView = [[SSVariableView alloc] initWithVariable:view.variable];
[movingView addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(moveVariable:)]];
[movingView addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveVariable:)]];
movingView.layer.shadowColor = [[UIColor blackColor] CGColor];
movingView.layer.shadowOpacity = 0.6;
movingView.layer.shadowOffset = CGSizeMake(0.0, 1.0);
movingView.layer.shadowRadius = 3.0;
movingView.layer.cornerRadius = 3.0;
}
else {
// TODO: remove from the statement
}
movingView.center = point;
[self.mainView addSubview:movingView];
self.movingVariable = movingView;
[UIView animateWithDuration:0.1 animations:^{
movingView.transform = CGAffineTransformMakeScale(1.25, 1.25);
movingView.alpha = 0.6;
movingView.layer.shadowOpacity = 0.1;
}];
}
} break;
case UIGestureRecognizerStateChanged: {
self.movingVariable.center = point;
[UIView animateWithDuration:0.2 animations:^{
for (SSStatementView * statementView in self.statementViews) {
if (CGRectContainsPoint(statementView.frame, point))
[statementView prepareForVariableView:self.movingVariable atPoint:[self convertPoint:point toView:statementView]];
else
[statementView unprepare];
}
}];
} break;
case UIGestureRecognizerStateEnded: {
BOOL added = NO;
SSVariableView * movingView = self.movingVariable;
self.movingVariable = nil;
movingView.alpha = 1.0;
movingView.transform = CGAffineTransformIdentity;
for (SSStatementView * statementView in self.statementViews) {
if (CGRectContainsPoint(statementView.frame, point)) {
added = YES;
[statementView addVariableView:movingView atPoint:point];
break;
}
}
if (!added) {
[UIView animateWithDuration:0.1 animations:^{
movingView.alpha = 0.0;
} completion:^(BOOL finished) {
[movingView removeFromSuperview];
}];
}
} break;
default:
break;
}
}
- (void)layoutStatements {
CGFloat y = 20;
SSStatementView * movingStatement = self.movingStatement;
CGFloat movingY = movingStatement.center.y;
CGFloat movingHeight = movingStatement.frame.size.height;
for (SSStatementView * statementView in self.statementViews) {
CGRect frame = statementView.frame;
frame.origin.x = 30;
frame.origin.y = y;
y += frame.size.height;
if (movingStatement && movingY < CGRectGetMidY(frame))
frame.origin.y += movingHeight;
statementView.frame = frame;
}
self.mainView.contentSize = CGSizeMake(self.mainView.bounds.size.width, y+20);
}
- (void)layoutSubviews {
CGFloat y = 15;
for (UIView * statementView in self.commandViews) {
CGRect frame = statementView.frame;
frame.origin.x = 60;
frame.origin.y = y;
statementView.frame = frame;
y += 50 + CGRectGetHeight(frame);
}
self.commandResevoir.contentSize = CGSizeMake(self.commandResevoir.bounds.size.width, y+20);
y = 30;
for (UIView * statementView in self.variableViews) {
CGRect frame = statementView.frame;
frame.origin.x = 60;
frame.origin.y = y;
statementView.frame = frame;
y += 10 + CGRectGetHeight(frame);
}
self.variableResevoir.contentSize = CGSizeMake(self.variableResevoir.bounds.size.width, y+20);
[self layoutStatements];
}
#pragma mark - Loading
- (void)addStatement:(NSString *)name withVariable:(NSString *)parameter {
SSStatementView * statement = [[SSStatementView alloc] initWithStatement:name];
[statement addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
[statement addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveStatement:)]];
[self.statementViews addObject:statement];
[self.mainView addSubview:statement];
SSVariableView * variable = [[SSVariableView alloc] initWithVariable:parameter];
[statement addVariableView:variable atIndex:0];
}
- (void)loadFileAtPath:(NSString *)path {
[self.statementViews removeAllObjects];
[self.commandViews removeAllObjects];
[self.variableViews removeAllObjects];
for (UIView * subview in [self.mainView subviews])
[subview removeFromSuperview];
for (UIView * subview in [self.commandResevoir subviews])
[subview removeFromSuperview];
for (UIView * subview in [self.variableResevoir subviews])
[subview removeFromSuperview];
[self addStatement:@"Write"];
[self addStatement:@"Read"];
[self addVariable:@"new line"];
SUString * file = SUStringCreate([path cStringUsingEncoding:NSUTF8StringEncoding]);
SUList * tokens = SUTokenizeFile(file);
SUList * errors = SUListCreate();
SUProgram * program = SUProgramCreate(tokens, errors);
SUList * statements = SUProgramGetStatements(program);
SUIterator * statementIterator = SUListCreateIterator(statements);
SUStatement * statement = NULL;
while ((statement = SUIteratorNext(statementIterator))) {
SUList * signature = SUFunctionGetSignature(SUStatementGetFunction(statement));
SUList * words = SUListGetValueAtIndex(signature, 0);
SUString * name = SUListGetValueAtIndex(words, 0);
NSString * nameString = [NSString stringWithCString:SUStringGetCString(name) encoding:NSUTF8StringEncoding];
SUList * parameters = SUStatementGetParameters(statement);
SUTypeRef parameter = SUListGetValueAtIndex(parameters, 0);
NSString * parameterString = nil;
if (SUTypeIsVariable(parameter)) {
SUList * name = SUVariableGetName((SUVariable*)parameter);
NSMutableString * string = [NSMutableString string];
SUToken * word = NULL;
SUIterator * wordIterator = SUListCreateIterator(name);
while ((word = SUIteratorNext(wordIterator))) {
if ([string length] > 0)
[string appendString:@" "];
[string appendString:[NSString stringWithCString:SUStringGetCString(SUTokenGetValue(word)) encoding:NSUTF8StringEncoding]];
}
SURelease(wordIterator);
parameterString = string;
}
else {
parameterString = [NSString stringWithUTF8String:SUStringGetCString(parameter)];
}
[self addStatement:nameString withVariable:parameterString];
}
SUList * functions = SUProgramGetFunctions(program);
SUIterator * functionIterator = SUListCreateIterator(functions);
SUFunction * function = NULL;
while ((function = SUIteratorNext(functionIterator))) {
SUList * signature = SUFunctionGetSignature(function);
SUList * words = SUListGetValueAtIndex(signature, 0);
SUString * name = SUListGetValueAtIndex(words, 0);
NSString * nameString = [NSString stringWithUTF8String:SUStringGetCString(name)];
if (!([nameString isEqualToString:@"Write"] || [nameString isEqualToString:@"Read"]))
[self addStatement:nameString];
}
SUList * variables = SUProgramGetVariables(program);
SUIterator * variableIterator = SUListCreateIterator(variables);
SUVariable * variable = NULL;
while ((variable = SUIteratorNext(variableIterator))) {
NSMutableString * nameString = [[NSMutableString alloc] init];
SUList * signature = SUVariableGetName(variable);
SUIterator * signatureIterator = SUListCreateIterator(signature);
SUToken * token = NULL;
while ((token = SUIteratorNext(signatureIterator))) {
SUString * name = SUTokenGetValue(token);
if ([nameString length] > 0)
[nameString appendString:@" "];
[nameString appendString:[NSString stringWithUTF8String:SUStringGetCString(name)]];
}
if (![nameString isEqualToString:@"new line"])
[self addVariable:nameString];
SURelease(signatureIterator);
}
SURelease(variableIterator);
SURelease(functionIterator);
SURelease(statementIterator);
SURelease(file);
SURelease(tokens);
SURelease(errors);
SURelease(program);
[self setNeedsLayout];
}
@end