//
//  JSRunSideBarView.m
//  JSRun
//
//  Created by Jonathan Saggau on 2/26/07.
//  Copyright 2007 Jonathan Saggau. All rights reserved.
//
// some code from omniappkit.
// Copyright 2003-2005 Omni Development, Inc.  All rights reserved.
//
// This software may only be used and reproduced according to the
// terms in the file OmniSourceLicense.html, which should be
// distributed with this project and can also be found at
// <http://www.omnigroup.com/developer/sourcecode/sourcelicense/>.
//
// It's a modified version of the gradient table view from omniappkit using
// CTGradient to draw the gradient

#import "JSRunSideBarView.h"
#import "JSCommonMacros.h"
#import "CTGradient.h"

@implementation JSRunSideBarView

- (void)selectAllCells
{
	[self selectRowIndexes:[NSIndexSet indexSetWithIndex:0] byExtendingSelection:NO];
}

- (void)drawRow:(int)rowIndex clipRect:(NSRect)clipRect
{
    [super drawRow:rowIndex clipRect:clipRect];
}

- (void)drawBackgroundInClipRect:(NSRect)clipRect
{
	[[self backgroundColor] set];
	NSRectFill(clipRect);
}

// NSTableView subclass

- (id)_highlightColorForCell:(NSCell *)cell;
{
    //keeps the cell from drawing the highlight
    return nil;
}

//from omniappkit (with CTGradient modification by JS)
- (void)highlightSelectionInClipRect:(NSRect)rect;
{
    // Take the color apart
    NSColor *alternateSelectedControlColor = [NSColor alternateSelectedControlColor];
    float hue, saturation, brightness, alpha;
    [[alternateSelectedControlColor colorUsingColorSpaceName:NSDeviceRGBColorSpace] getHue:&hue saturation:&saturation brightness:&brightness alpha:&alpha];
    
    // Create synthetic darker and lighter versions
    // NSColor *lighterColor = [NSColor colorWithDeviceHue:hue - (1.0/120.0) saturation:MAX(0.0, saturation-0.12) brightness:MIN(1.0, brightness+0.045) alpha:alpha];
    NSColor *lighterColor = [NSColor colorWithDeviceHue:hue saturation:MAX(0.0, saturation-.12) brightness:MIN(1.0, brightness+0.30) alpha:alpha];
    NSColor *darkerColor = [NSColor colorWithDeviceHue:hue saturation:MIN(1.0, (saturation > .04) ? saturation+0.12 : 0.0) brightness:MAX(0.0, brightness-0.045) alpha:alpha];
    
    // If this view isn't key, use the gray version of the dark color. Note that this varies from the standard gray version that NSCell returns as its highlightColorWithFrame: when the cell is not in a key view, in that this is a lot darker. Mike and I think this is justified for this kind of view -- if you're using the dark selection color to show the selected status, it makes sense to leave it dark.
    if ([[self window] firstResponder] != self || ![[self window] isKeyWindow]) {
        alternateSelectedControlColor = [[alternateSelectedControlColor colorUsingColorSpaceName:NSDeviceWhiteColorSpace] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
        lighterColor = [[lighterColor colorUsingColorSpaceName:NSDeviceWhiteColorSpace] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
        darkerColor = [[darkerColor colorUsingColorSpaceName:NSDeviceWhiteColorSpace] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
    }

    NSEnumerator *selectedRowEnumerator = [self selectedRowEnumerator];
    NSNumber *rowIndexNumber = [selectedRowEnumerator nextObject];
    unsigned int rowIndex = rowIndexNumber ? [rowIndexNumber unsignedIntValue] : NSNotFound;
    
    while (rowIndex != NSNotFound) {
        unsigned int endOfCurrentRunRowIndex, newRowIndex = rowIndex;
        do {
            endOfCurrentRunRowIndex = newRowIndex;
            rowIndexNumber = [selectedRowEnumerator nextObject];
            newRowIndex = rowIndexNumber ? [rowIndexNumber unsignedIntValue] : NSNotFound;
        } while (newRowIndex == endOfCurrentRunRowIndex + 1);
        
        NSRect rowRect = NSUnionRect([self rectOfRow:rowIndex], [self rectOfRow:endOfCurrentRunRowIndex]);
        
        NSRect topBar, washRect;
        NSDivideRect(rowRect, &topBar, &washRect, 1.0, NSMinYEdge);
        
        // Draw the top line of pixels of the selected row in the alternateSelectedControlColor
        [alternateSelectedControlColor set];
        NSRectFill(topBar);
        
        NSGraphicsContext *nsContext = [NSGraphicsContext currentContext];
        [nsContext saveGraphicsState];
        CTGradient *gradient = [CTGradient gradientWithBeginningColor:darkerColor endingColor:lighterColor];
        [gradient fillRect:washRect angle:270.0];
        [nsContext restoreGraphicsState]; 
        rowIndex = newRowIndex;
    }

}

- (void)selectRow:(int)row byExtendingSelection:(BOOL)extend;
{
    [super selectRow:row byExtendingSelection:extend];
    [self setNeedsDisplay:YES]; // we display extra because we draw multiple contiguous selected rows differently, so changing one row's selection can change how others draw.
}

- (void)deselectRow:(int)row;
{
    [super deselectRow:row];
    [self setNeedsDisplay:YES]; // we display extra because we draw multiple contiguous selected rows differently, so changing one row's selection can change how others draw.
}

@end