//
//  DKTabView
//  DarkKit
//
//  Created by Chad Weider on 5/2/08.
//  Copyright (c) 2008 Chad Weider
//  Some rights reserved: <http://www.opensource.org/licenses/zlib-license.php>
//  
//  This software is provided 'as-is', without any express or implied warranty.
//  In no event will the authors be held liable for any damages arising from the
//  use of this software.
//  
//  Permission is granted to anyone to use this software for any purpose,
//  including commercial applications, and to alter it and redistribute it
//  freely, subject to the following restrictions:
//  
//  1. The origin of this software must not be misrepresented; you must not   
//  claim that you wrote the original software. If you use this software in a
//  product, an acknowledgment in the product documentation would be appreciated
//  but is not required.
//  
//  2. Altered source versions must be plainly marked as such, and must not be
//  misrepresented as being the original software.
//  
//  3. This notice may not be removed or altered from any source distribution.
//

#import "DKTabView.h"

#import "CTGradient.h"
#import "NSBezierPath+PXRoundedRectangleAdditions.h"

#import "NSTabView.h"

@implementation DKTabView

- (void)_drawThemeTab:(NSTabViewItem *)tabViewItem withState:(int)state inRect:(NSRect)rect
  {
  CTGradient *myGradient;
  if(state == NSSelectedTab)					//Selected Tab
	myGradient = [CTGradient gradientWithBeginningColor:[NSColor colorWithCalibratedWhite:.4 alpha:1.0]
											endingColor:[NSColor colorWithCalibratedWhite:.2 alpha:1.0]];
  else if(state == NSBackgroundTab)				//Normal Tab
	myGradient = [CTGradient gradientWithBeginningColor:[NSColor colorWithCalibratedWhite:.3 alpha:1.0]
											endingColor:[NSColor colorWithCalibratedWhite:.0 alpha:1.0]];
  else if(state == NSPressedTab)				//Pressed Tab
	myGradient = [CTGradient gradientWithBeginningColor:[NSColor colorWithCalibratedWhite:.5 alpha:1.0]
											endingColor:[NSColor colorWithCalibratedWhite:.3 alpha:1.0]];
  
  NSRect buttonRect;
  float buttonHeight;
  float buttonYShift;
  float buttonBoxHeight;
  float cornerRadius;
  float capInset;
	
  switch([self controlSize])
	{
	case NSRegularControlSize:
		buttonYShift = 2;
		buttonBoxHeight = 25;
		buttonHeight = 20;
		cornerRadius = 4;
		capInset = 2;
						break;
	case NSSmallControlSize:
		buttonYShift = 2;
		buttonBoxHeight = 21;
		buttonHeight = 17;
		cornerRadius = 4;
		capInset = 2;
						break;
	case NSMiniControlSize:
		buttonYShift = 1;
		buttonBoxHeight = 17;
		buttonHeight = 14;
		cornerRadius = 3;
		capInset = 1;
						break;
	}
  if([self _hasHorizontalOrientation])
	buttonRect = NSMakeRect(rect.origin.x+.5, floorf(NSMidY(rect)-(buttonBoxHeight)/2)+buttonYShift+.5, rect.size.width-1, buttonHeight);
  else
	buttonRect = NSMakeRect(floorf(NSMidX(rect)-(buttonBoxHeight)/2)+buttonYShift+.5, rect.origin.y+.5, buttonHeight, rect.size.height-1);
  
  NSBezierPath *bezelPath;
  
  
  //adjustments for ends
  
  OSCornerType corners = 0;
  if([self indexOfTabViewItem:tabViewItem] > 0 && [self indexOfTabViewItem:tabViewItem] < [self numberOfTabViewItems])
    {
	if([self _hasHorizontalOrientation])
		{
		buttonRect.origin.x -= 1;
		buttonRect.size.width += 1;
		}
	else
		{
		buttonRect.origin.y -= 1;
		buttonRect.size.height += 1;
		}
	}
  if([self indexOfTabViewItem:tabViewItem] == 0)
	{
	if([self _hasHorizontalOrientation])		//if Top
		{
		buttonRect.origin.x += capInset;
		buttonRect.size.width -= capInset;
		corners |= OSTopLeftCorner | OSBottomLeftCorner;
		}
	else										//Left
		{
		buttonRect.origin.y += capInset;
		buttonRect.size.height -= capInset;
		corners |= OSBottomLeftCorner | OSBottomRightCorner;
		}
	}
  if([self indexOfTabViewItem:tabViewItem] == ([self numberOfTabViewItems] - 1))
	{
	if([self _hasHorizontalOrientation])		//if Bottom
		{
		buttonRect.size.width -= capInset;
		corners |= OSTopRightCorner | OSBottomRightCorner;
		}
	else										//Right
		{
		buttonRect.size.height -= capInset;
		corners |= OSTopLeftCorner | OSTopRightCorner;
		}
	}
	
	bezelPath = [NSBezierPath bezierPathWithRoundedRect:buttonRect cornerRadius:cornerRadius inCorners:corners];
  
  
  float angle;
  if([self _hasHorizontalOrientation])		//if Top or Bottom Orientation
	angle = 90;
  else										//Left or Right Orientation
	angle = -90+[self _tabOrientation]*90;
  
  [myGradient fillBezierPath:bezelPath angle:angle];

  [bezelPath setLineWidth:1];
  [[NSColor colorWithCalibratedWhite:1 alpha:1] set];
  [bezelPath stroke];
  }

- (void)addTabViewItem:(NSTabViewItem *)tabViewItem
  {
  object_setClass(tabViewItem, [DKTabViewItem class]);
  
  [super addTabViewItem:tabViewItem];
  }

- (void)_drawBezelBorder:(id)fp8 inRect:(NSRect)rect
  {
  NSRect borderRect = [self bounds];
  
  
  if([self _hasHorizontalOrientation])
	{
	float xMargin = 7;
	float yMargin = 10;
	float buttonSizeAdjust = 0;

	switch([self controlSize])
		{
		case NSRegularControlSize:
			buttonSizeAdjust = 6;
							break;
		case NSSmallControlSize:
			buttonSizeAdjust = 2;
							break;
		case NSMiniControlSize:
			buttonSizeAdjust = 0;
							break;
		}

	borderRect = NSInsetRect(borderRect, xMargin+.5, yMargin+.5);
	
	if([self tabViewType] == NSTopTabsBezelBorder)
		{
		borderRect.origin.y += buttonSizeAdjust;
		borderRect.size.height -= buttonSizeAdjust;
		}
	else
		{
		borderRect.origin.y += -6;
		borderRect.size.height -= buttonSizeAdjust-6;
		}
	}
  else
	{
	float xMargin = 7;
	float topMargin = 4;
	float bottomMargin = 10;
	float buttonSizeAdjust = 0;

	switch([self controlSize])
		{
		case NSRegularControlSize:
			buttonSizeAdjust = 8;
							break;
		case NSSmallControlSize:
			buttonSizeAdjust = 5;
							break;
		case NSMiniControlSize:
			buttonSizeAdjust = 2;
							break;
		}

	borderRect = NSInsetRect(borderRect, xMargin+.5, .5);
	borderRect.origin.y += topMargin;
	borderRect.size.height -= topMargin + bottomMargin;
	
	if([self tabViewType] == NSLeftTabsBezelBorder)
		borderRect.origin.x += buttonSizeAdjust;
	borderRect.size.width -= buttonSizeAdjust;
	}

  
  NSBezierPath *borderPath = [NSBezierPath bezierPathWithRoundedRect:borderRect cornerRadius:4];
  [[NSColor colorWithCalibratedWhite:.75 alpha:1] set];
  [borderPath stroke];
  }

@end