WLEffectView.m

//
//  WLEffectView.m
//  Welly
//
//  Created by K.O.ed on 08-8-15.
//  Copyright 2008 Welly Group. All rights reserved.
//

#import "WLEffectView.h"
#import "WLGlobalConfig.h"

#import <Quartz/Quartz.h>
#import <ScreenSaver/ScreenSaver.h>
#import <CoreText/CTFont.h>

#define OMIT_IMPLIED_ANIM_BEGIN \
	[CATransaction begin]; \
	[CATransaction setValue:[NSNumber numberWithFloat:0.0f] \
					 forKey:kCATransactionAnimationDuration]

#define OMIT_IMPLIED_ANIM_END \
	[CATransaction commit]

@implementation WLEffectView
- (id)initWithView:(WLTerminalView *)view {
	self = [self initWithFrame:[view frame]];
	if (self) {
		_mainView = [view retain];
		[self setWantsLayer:YES];
	}
	return self;
}

- (id)initWithFrame:(NSRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code here.
		[self setFrame:frame];
		[self setWantsLayer:YES];
    }
    return self;
}

- (void)dealloc {
	[_mainLayer release];
	[_ipAddrLayer release];
	if (_popUpLayer) {
		[_popUpLayer release];
	}
	if (_buttonLayer) {
		[[[_buttonLayer sublayers] lastObject] removeFromSuperlayer];
		[_buttonLayer release];
	}
	
	CGColorRelease(_popUpLayerTextColor);
    CGFontRelease(_popUpLayerTextFont);
	[super dealloc];
}

- (void)setupLayer {
	NSRect contentFrame = [_mainView frame];
	[self setFrame:contentFrame];
	
    // mainLayer is the layer that gets scaled. All of its sublayers
    // are automatically scaled with it.
	if (!_mainLayer) {
		_mainLayer = [CALayer layer];
		
		// Make the background color to be a dark gray with a 50% alpha similar to
		// the real Dashbaord.
		CGColorRef bgColor = CGColorCreateGenericRGB(0.0, 0.0, 0.0, 0.0);
		[_mainLayer setBackgroundColor:bgColor];
		CGColorRelease(bgColor);
		
		[self setLayer:_mainLayer];
	}
    [_mainLayer setFrame:NSRectToCGRect(contentFrame)];
}

- (void)clear {
	[self clearIPAddrBox];
	[self clearClickEntry];
	[self clearButton];
}

- (void)drawRect:(NSRect)rect {
	// Drawing code here.
}

- (void)resize {
	[self setFrameSize:[_mainView frame].size];
	[self setFrameOrigin:NSMakePoint(0, 0)];
}

- (void)awakeFromNib {
	[self setupLayer];
}

- (void)setIPAddrBox {
	_ipAddrLayer = [CALayer layer];
    
	// Set up the box
	CGColorRef ipAddrLayerBGColor = CGColorCreateGenericRGB(0.0, 0.95, 0.95, 0.1f);
	CGColorRef ipAddrLayerBorderColor = CGColorCreateGenericRGB(1.0, 1.0, 1.0, 1.0f);
	[_ipAddrLayer setBackgroundColor:ipAddrLayerBGColor];
	[_ipAddrLayer setBorderColor:ipAddrLayerBorderColor];
	CGColorRelease(ipAddrLayerBGColor);
	CGColorRelease(ipAddrLayerBorderColor);
	[_ipAddrLayer setBorderWidth:1.4];
	[_ipAddrLayer setCornerRadius:6.0];
	
    // Insert the layer into the root layer
	[_mainLayer addSublayer:[_ipAddrLayer retain]];
}

- (void)drawIPAddrBox:(NSRect)rect {
	if (!_ipAddrLayer)
		[self setIPAddrBox];
	
	rect.origin.x -= 1.0;
	rect.origin.y -= 0.0;
	rect.size.width += 2.0;
	rect.size.height += 0.0;
	
    // Set the layer frame to the rect
    [_ipAddrLayer setFrame:NSRectToCGRect(rect)];
    
    // Set the opacity to make the layer appear
	[_ipAddrLayer setOpacity:1.0f];
}

- (void)clearIPAddrBox {
	[_ipAddrLayer setOpacity:0.0f];
}

#pragma mark Click Entry
- (void)setupClickEntry {
	_clickEntryLayer = [CALayer layer];
    
	CGColorRef clickEntryLayerBGColor = CGColorCreateGenericRGB(0.0, 0.95, 0.95, 0.17f);
	[_clickEntryLayer setBackgroundColor:clickEntryLayerBGColor];
	CGColorRelease(clickEntryLayerBGColor);
	[_clickEntryLayer setBorderWidth:0];
	[_clickEntryLayer setCornerRadius:6.0];
	
    // Insert the layer into the root layer
	[_mainLayer addSublayer:[_clickEntryLayer retain]];
}

- (void)drawClickEntry:(NSRect)rect {
	if (!_clickEntryLayer)
		[self setupClickEntry];
	
	rect.origin.x -= 1.0;
	rect.origin.y -= 0.0;
	rect.size.width += 2.0;
	rect.size.height += 0.0;
	
    // Set the layer frame to the rect
    [_clickEntryLayer setFrame:NSRectToCGRect(rect)];
    
    // Set the opacity to make the layer appear
	[_clickEntryLayer setOpacity:1.0f];
}

- (void)clearClickEntry {
	[_clickEntryLayer setOpacity:0.0f];
}

#pragma mark Welly Buttons
- (void)setupButtonLayer {
	if (_buttonLayer)
		[_buttonLayer release];
	_buttonLayer = [CALayer layer];
	// Set the colors of the pop-up layer
	CGColorRef myColor = CGColorCreateGenericRGB(0.05, 0.05, 0.05, 0.9f);
	[_buttonLayer setBackgroundColor:myColor];
	CGColorRelease(myColor);
	myColor = CGColorCreateGenericRGB(1.0, 1.0, 1.0, 0.9f);
	[_buttonLayer setBorderColor:myColor];
	CGColorRelease(myColor);
	[_buttonLayer setBorderWidth:2.0];
	[_buttonLayer setCornerRadius:10.0];
	
    // Create a text layer to add so we can see the messages.
    CATextLayer *textLayer = [CATextLayer layer];
	[textLayer autorelease];
	// Set its foreground color
	myColor = CGColorCreateGenericRGB(1, 1, 1, 1.0f);
    [textLayer setForegroundColor:myColor];
	CGColorRelease(myColor);
	
	[_buttonLayer addSublayer:[textLayer retain]];
	
	CATransition *buttonTrans = [CATransition new];
	[buttonTrans setType:kCATransitionFade];
	[_buttonLayer addAnimation:buttonTrans forKey:kCATransition];
    [buttonTrans autorelease];
	[_buttonLayer setHidden:YES];
    // Insert the layer into the root layer
	[_mainLayer addSublayer:[_buttonLayer retain]];
}

- (void)drawButton:(NSRect)rect 
	   withMessage:(NSString *)message {
	//Initiallize a new CALayer
	[self clearButton];
	if (!_buttonLayer)
		[self setupButtonLayer];
	
	CATextLayer *textLayer = [[_buttonLayer sublayers] lastObject];
	
	// Set the message to the text layer
	[textLayer setString:message];
	// Modify its styles
	[textLayer setTruncationMode:kCATruncationEnd];
    CGFontRef font = CGFontCreateWithFontName((CFStringRef)[[WLGlobalConfig sharedInstance] englishFontName]);
    [textLayer setFont:font];
	[textLayer setFontSize:[[WLGlobalConfig sharedInstance] englishFontSize] - 2];
	// Here, calculate the size of the text layer
	NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
								[NSFont fontWithName:[[WLGlobalConfig sharedInstance] englishFontName] 
												size:[textLayer fontSize]], 
								NSFontAttributeName, 
								nil];
	NSSize messageSize = [message sizeWithAttributes:attributes];
	
	// Change the size of text layer automatically
	NSRect textRect = NSZeroRect;
	textRect.size.width = messageSize.width;
	textRect.size.height = messageSize.height;
    CGFontRelease(font);
	
    // Create a new rectangle with a suitable size for the inner texts.
	// Set it to an appropriate position of the whole view
	NSRect finalRect = rect;
	if (finalRect.size.width < textRect.size.width + 8)
		finalRect.size.width = textRect.size.width + 8;
	finalRect.size.height = textRect.size.height + 4;
	
	// Move the origin point of the message layer, so the message can be 
	// displayed in the center of the background rect
	textRect.origin.x += (finalRect.size.width - textRect.size.width) / 2.0;
	textRect.origin.y += (finalRect.size.height - textRect.size.height) / 2.0;
	
	// We don't want the implied animation for moving
	OMIT_IMPLIED_ANIM_BEGIN;
	
    // Set the layer frame to our rectangle.
	[textLayer setFrame:NSRectToCGRect(textRect)];
    [_buttonLayer setFrame:NSRectToCGRect(finalRect)];
	
	// Now commit the animation transaction, omit all animations
	OMIT_IMPLIED_ANIM_END;
	
	// Now we reveal the button layer at new position
	[_buttonLayer setHidden:NO];
}

- (void)clearButton {
	if (_buttonLayer == nil)
		return;
	
	[_buttonLayer setHidden:YES];
}

#pragma mark -
#pragma mark URL drawing
- (CGImageRef)indicatorImage { 
	if (_urlIndicatorImage == NULL) { 
		NSString *path = [[NSBundle mainBundle] pathForResource:@"indicator" 
														 ofType:@"png"]; 
		NSURL *imageURL = [NSURL fileURLWithPath:path]; 
		CGImageSourceRef src = CGImageSourceCreateWithURL((CFURLRef)imageURL, NULL); 
		if (NULL != src) { 
			_urlIndicatorImage = CGImageSourceCreateImageAtIndex(src, 0, NULL); 
			CFRelease(src);
		} 
	} 
	return _urlIndicatorImage; 
} 

- (void)setupURLIndicatorLayer {
	_urlIndicatorLayer = [CALayer layer];
	[_urlIndicatorLayer setContents:(id)[self indicatorImage]];
	[_urlIndicatorLayer setFrame:CGRectMake(0, 0, 79, 90)];
	[_mainLayer addSublayer:_urlIndicatorLayer];
}

- (void)showIndicatorAtPoint:(NSPoint)point {
	if (!_urlIndicatorLayer)
		[self setupURLIndicatorLayer];
	[_urlIndicatorLayer setOpacity:0.9];
	CGRect rect = [_urlIndicatorLayer frame];
	rect.origin = NSPointToCGPoint(point);
	[_urlIndicatorLayer setFrame:rect];
}

- (void)removeIndicator {
	if (_urlIndicatorLayer)
		[_urlIndicatorLayer setOpacity:0.0f];
}

#pragma mark Pop-Up Message
- (void)setupPopUpLayer {
    NSAssert(_popUpLayer == nil, @"Setup pop-up layer when there exists one already!");
    _popUpLayer = [CALayer layer];
	
	// Set the colors of the pop-up layer
	CGColorRef popUpLayerBGColor = CGColorCreateGenericRGB(0.1, 0.1, 0.1, 0.5f);
	CGColorRef popUpLayerBorderColor = CGColorCreateGenericRGB(1.0, 1.0, 1.0, 0.75f);
	[_popUpLayer setBackgroundColor:popUpLayerBGColor];
	[_popUpLayer setBorderColor:popUpLayerBorderColor];
	CGColorRelease(popUpLayerBGColor);
	CGColorRelease(popUpLayerBorderColor);
	[_popUpLayer setBorderWidth:2.0];
    
    // Move to proper position before shows up, avoiding moving on screen
    NSRect rect = [self frame];
	rect.origin.x = rect.size.width / 2;
	rect.origin.y = rect.size.height / 5;
    rect.size.width = 0;
    rect.size.height = 0;
	
    [_popUpLayer setFrame:NSRectToCGRect(rect)];
    
	// Set up text color/font, which would be used many times
	_popUpLayerTextColor = CGColorCreateGenericRGB(1.0, 1.0, 1.0, 1.0f);
	_popUpLayerTextFont = CGFontCreateWithFontName((CFStringRef)DEFAULT_POPUP_BOX_FONT);
	
	// Create a text layer to add so we can see the message.
    CATextLayer *textLayer = [CATextLayer layer];
	[textLayer autorelease];
	// Set its foreground color
    [textLayer setForegroundColor:_popUpLayerTextColor];
	// Modify its styles
	[textLayer setTruncationMode:kCATruncationEnd];
    [textLayer setFont:_popUpLayerTextFont];

	[_popUpLayer addSublayer:[textLayer retain]];
	// Insert the layer into the root layer
	[_mainLayer addSublayer:[_popUpLayer retain]];
}

// Just similiar to the code of "addNewLayer"...
// by gtCarrera @ 9#
- (void)drawPopUpMessage:(NSString *)message {
	// Remove previous message
	[self removePopUpMessage];
	//Initiallize a new CALayer
	if (!_popUpLayer) {
		[self setupPopUpLayer];
    }	
	
	CATextLayer *textLayer = [[_popUpLayer sublayers] lastObject];
	
	// Set the message to the text layer
	[textLayer setString:message];
	// Here, calculate the size of the text layer
	NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
								[NSFont fontWithName:DEFAULT_POPUP_BOX_FONT 
												size:textLayer.fontSize], 
								NSFontAttributeName, 
								nil];
	NSSize messageSize = [message sizeWithAttributes:attributes];
	
	// Change the size of text layer automatically
	NSRect textRect = NSZeroRect;
	textRect.size.width = messageSize.width;
	textRect.size.height = messageSize.height;
	
    // Create a new rectangle with a suitable size for the inner texts.
	// Set it to an appropriate position of the whole view
    NSRect rect = textRect;
	NSRect screenRect = [self frame];
	rect.size.height += 10;
	rect.size.width += 50;
	rect.origin.x = screenRect.size.width / 2 - rect.size.width / 2;
	rect.origin.y = screenRect.size.height / 5;
	
	// Move the origin point of the message layer, so the message can be 
	// displayed in the center of the background layer
	textRect.origin.x += (rect.size.width - textRect.size.width) / 2.0;
	[textLayer setFrame:NSRectToCGRect(textRect)];
	
    // Set the layer frame to our rectangle.
    [_popUpLayer setFrame:NSRectToCGRect(rect)];
	[_popUpLayer setCornerRadius:rect.size.height/5];
    
	[_popUpLayer setHidden:NO];
}

- (void)removePopUpMessage {
	if(_popUpLayer) {
		[_popUpLayer setHidden:YES];
	}
}

@end