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//
// PBGitRevisionCell.m
// GitX
//
// Created by Pieter de Bie on 17-06-08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//

#import "PBGitRevisionCell.h"
#import "PBGitRef.h"
#import "RoundedRectangle.h"

@implementation PBGitRevisionCell


- (id) initWithCoder: (id) coder
{
self = [super initWithCoder:coder];
textCell = [[NSTextFieldCell alloc] initWithCoder:coder];
return self;
}

- (NSArray*) colors
{
return [NSArray arrayWithObjects:
[NSColor colorWithCalibratedRed: 0X4e/256.0 green:0X9A/256.0 blue: 0X06/256.0 alpha: 1.0],
[NSColor colorWithCalibratedRed: 0X20/256.0 green:0X4A/256.0 blue: 0X87/256.0 alpha: 1.0],
[NSColor colorWithCalibratedRed: 0XC4/256.0 green:0XA0/256.0 blue: 0 alpha: 1.0],
[NSColor colorWithCalibratedRed: 0X5C/256.0 green:0X35/256.0 blue: 0X66/256.0 alpha: 1.0],
[NSColor colorWithCalibratedRed: 0XA4/256.0 green:0X00/256.0 blue: 0X00/256.0 alpha: 1.0],
[NSColor colorWithCalibratedRed: 0XCE/256.0 green:0X5C/256.0 blue: 0 alpha: 1.0],
nil];
}

- (void) drawLineFromColumn: (int) from toColumn: (int) to inRect: (NSRect) r offset: (int) offset color: (int) c
{

int columnWidth = 10;
NSPoint origin = r.origin;

NSPoint source = NSMakePoint(origin.x + columnWidth* from, origin.y + offset);
NSPoint center = NSMakePoint( origin.x + columnWidth * to, origin.y + r.size.height * 0.5 + 0.5);

// Just use red for now.
NSArray* colors = [self colors];
[[colors objectAtIndex: c % [colors count]] set];

NSBezierPath * path = [NSBezierPath bezierPath];
[path setLineWidth:2];

[path moveToPoint: source];
[path lineToPoint: center];
[path stroke];

}

- (void) drawCircleInRect: (NSRect) r
{

int c = cellInfo.position;
int columnWidth = 10;
NSPoint origin = r.origin;
NSPoint columnOrigin = { origin.x + columnWidth * c, origin.y};

NSRect oval = { columnOrigin.x - 5, columnOrigin.y + r.size.height * 0.5 - 5, 10, 10};


NSBezierPath * path = [NSBezierPath bezierPathWithOvalInRect:oval];

[[NSColor blackColor] set];
[path fill];

NSRect smallOval = { columnOrigin.x - 3, columnOrigin.y + r.size.height * 0.5 - 3, 6, 6};
[[NSColor whiteColor] set];
path = [NSBezierPath bezierPathWithOvalInRect:smallOval];
[path fill];
}

- (void) drawTriangleInRect: (NSRect) r sign: (char) sign
{
int c = cellInfo.position;
int columnHeight = 10;
int columnWidth = 8;

NSPoint top;
if (sign == '<')
top.x = round(r.origin.x) + 10 * c + 4;
else {
top.x = round(r.origin.x) + 10 * c - 4;
columnWidth *= -1;
}
top.y = r.origin.y + (r.size.height - columnHeight) / 2;

NSBezierPath * path = [NSBezierPath bezierPath];
// Start at top
[path moveToPoint: NSMakePoint(top.x, top.y)];
// Go down
[path lineToPoint: NSMakePoint(top.x, top.y + columnHeight)];
// Go left top
[path lineToPoint: NSMakePoint(top.x - columnWidth, top.y + columnHeight / 2)];
// Go to top again
[path closePath];

[[NSColor whiteColor] set];
[path fill];
[[NSColor blackColor] set];
[path setLineWidth: 2];
[path stroke];
}

- (NSMutableDictionary*) attributesForRefLabelSelected: (BOOL) selected
{
NSMutableDictionary *attributes = [[[NSMutableDictionary alloc] initWithCapacity:2] autorelease];
NSMutableParagraphStyle* style = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease];

[style setAlignment:NSCenterTextAlignment];
[attributes setObject:style forKey:NSParagraphStyleAttributeName];
[attributes setObject:[NSFont fontWithName:@"Helvetica" size:9] forKey:NSFontAttributeName];

//if (selected)
// [attributes setObject:[NSColor alternateSelectedControlTextColor] forKey:NSForegroundColorAttributeName];

return attributes;
}

- (NSColor*) colorForRef: (PBGitRef*) ref
{
BOOL isHEAD = [ref.ref isEqualToString:[[[controller repository] headRef] simpleRef]];

if (isHEAD)
return [NSColor colorWithCalibratedRed: 0Xfc/256.0 green:0Xa6/256.0 blue: 0X4f/256.0 alpha: 1.0];

NSString* type = [ref type];
if ([type isEqualToString:@"head"])
return [NSColor colorWithCalibratedRed: 0Xaa/256.0 green:0Xf2/256.0 blue: 0X54/256.0 alpha: 1.0];
else if ([type isEqualToString:@"remote"])
return [NSColor colorWithCalibratedRed: 0xb2/256.0 green:0Xdf/256.0 blue: 0Xff/256.0 alpha: 1.0];
else if ([type isEqualToString:@"tag"])
return [NSColor colorWithCalibratedRed: 0Xfc/256.0 green:0Xed/256.0 blue: 0X4f/256.0 alpha: 1.0];

return [NSColor yellowColor];
}

-(NSArray *)rectsForRefsinRect:(NSRect) rect;
{
NSMutableArray *array = [NSMutableArray array];

static const int ref_padding = 10;
static const int ref_spacing = 2;

NSRect lastRect = rect;
lastRect.origin.x = round(lastRect.origin.x) - 0.5;
lastRect.origin.y = round(lastRect.origin.y) - 0.5;

for (PBGitRef *ref in self.objectValue.refs) {
NSMutableDictionary* attributes = [self attributesForRefLabelSelected:NO];
NSSize textSize = [[ref shortName] sizeWithAttributes:attributes];

NSRect newRect = lastRect;
newRect.size.width = textSize.width + ref_padding;
newRect.size.height = textSize.height;
newRect.origin.y = rect.origin.y + (rect.size.height - newRect.size.height) / 2;

[array addObject:[NSValue valueWithRect:newRect]];
lastRect = newRect;
lastRect.origin.x += (int)lastRect.size.width + ref_spacing;
}

return array;
}

- (void) drawLabelAtIndex:(int)index inRect:(NSRect)rect
{
NSArray *refs = self.objectValue.refs;
PBGitRef *ref = [refs objectAtIndex:index];

NSMutableDictionary* attributes = [self attributesForRefLabelSelected:[self isHighlighted]];
NSBezierPath *border = [NSBezierPath bezierPathWithRoundedRect:rect cornerRadius: 2.0];
[[self colorForRef:ref] set];
[border fill];

[[ref shortName] drawInRect:rect withAttributes:attributes];
[border stroke];
}

- (void) drawRefsInRect: (NSRect *)refRect
{
[[NSColor blackColor] setStroke];

NSRect lastRect;
int index = 0;
for (NSValue *rectValue in [self rectsForRefsinRect:*refRect])
{
NSRect rect = [rectValue rectValue];
[self drawLabelAtIndex:index inRect:rect];
lastRect = rect;
++index;
}
refRect->size.width -= lastRect.origin.x - refRect->origin.x + lastRect.size.width;
refRect->origin.x = lastRect.origin.x + lastRect.size.width;
}

- (void) drawWithFrame: (NSRect) rect inView:(NSView *)view
{
cellInfo = [self.objectValue lineInfo];

if (cellInfo && ![controller hasNonlinearPath]) {
float pathWidth = 10 + 10 * cellInfo.numColumns;

NSRect ownRect;
NSDivideRect(rect, &ownRect, &rect, pathWidth, NSMinXEdge);

int i;
struct PBGitGraphLine *lines = cellInfo.lines;
for (i = 0; i < cellInfo.nLines; i++) {
if (lines[i].upper == 0)
[self drawLineFromColumn: lines[i].from toColumn: lines[i].to inRect:ownRect offset: ownRect.size.height color: lines[i].colorIndex];
else
[self drawLineFromColumn: lines[i].from toColumn: lines[i].to inRect:ownRect offset: 0 color:lines[i].colorIndex];
}

if (cellInfo.sign == '<' || cellInfo.sign == '>')
[self drawTriangleInRect: ownRect sign: cellInfo.sign];
else
[self drawCircleInRect: ownRect];
}


if ([self.objectValue refs] && [[self.objectValue refs] count])
[self drawRefsInRect:&rect];

// Still use this superclass because of hilighting differences
//_contents = [self.objectValue subject];
//[super drawWithFrame:rect inView:view];
[textCell setObjectValue: [self.objectValue subject]];
[textCell setHighlighted: [self isHighlighted]];
[textCell drawWithFrame:rect inView: view];
}

- (void) setObjectValue: (PBGitCommit*)object {
[super setObjectValue:[NSValue valueWithNonretainedObject:object]];
}

- (PBGitCommit*) objectValue {
    return [[super objectValue] nonretainedObjectValue];
}

- (int) indexAtX:(float)x
{
cellInfo = [self.objectValue lineInfo];
float pathWidth = 0;
if (cellInfo && ![controller hasNonlinearPath])
pathWidth = 10 + 10 * cellInfo.numColumns;

int index = 0;
NSRect refRect = NSMakeRect(pathWidth, 0, 1000, 10000);
for (NSValue *rectValue in [self rectsForRefsinRect:refRect])
{
NSRect rect = [rectValue rectValue];
if (x >= rect.origin.x && x <= (rect.origin.x + rect.size.width))
return index;
++index;
}

return -1;
}

- (NSRect) rectAtIndex:(int)index
{
cellInfo = [self.objectValue lineInfo];
float pathWidth = 0;
if (cellInfo && ![controller hasNonlinearPath])
pathWidth = 10 + 10 * cellInfo.numColumns;
NSRect refRect = NSMakeRect(pathWidth, 0, 1000, 10000);

return [[[self rectsForRefsinRect:refRect] objectAtIndex:index] rectValue];
}

# pragma mark context menu delegate methods

- (NSMenu *) menuForEvent:(NSEvent *)event inRect:(NSRect)rect ofView:(NSView *)view
{
if (!contextMenuDelegate)
return [self menu];

int i = [self indexAtX:[view convertPointFromBase:[event locationInWindow]].x];
if (i < 0)
return [self menu];

id ref = [[[self objectValue] refs] objectAtIndex:i];
if (!ref)
return [self menu];

NSArray *items = [contextMenuDelegate menuItemsForRef:ref commit:[self objectValue]];
NSMenu *menu = [[NSMenu alloc] init];
for (NSMenuItem *item in items)
[menu addItem:item];
return menu;

return [self menu];
}
@end
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