Couple fixes, README change

CHGridLayout/CHGridLayout.m

@@ -74,11 +74,11 @@ - (void)updateLayout{
 
 	float perLineFloat = perLine;
 
-	int u;
-	for(u = 0; u < _index.count; u++){
-		int numberOfTilesInSection = [[_index objectAtIndex:u] count];
+	for(NSMutableArray *array in _index){
+		int numberOfTilesInSection = [array count];
 		contentHeight += ceil(numberOfTilesInSection / perLineFloat) * rowHeight;
 	}
+
 	if(sections > 1) contentHeight += (sectionTitleHeight * sections) + ((sections - 1) * padding.height);
 	contentHeight += padding.height;
 
@@ -145,19 +145,16 @@ - (CHSectionRange)sectionRangeForContentOffset:(CGFloat)offset andHeight:(CGFloa
 	float pixelMargin = rowHeight * 2;
 	int currentSection = [self sectionIndexForContentOffset:offset];
 
-	int i;
-	for(i = currentSection; i < _sectionTitles.count; i++){
-		if(firstRun){
-			start = i;
+	for(CHGridLayoutSection *section in _sectionTitles){
+		if(firstRun && section.section >= currentSection){
+			start = section.section;
 			firstRun = NO;
 		}
 
-		CHGridLayoutSection *section = [_sectionTitles objectAtIndex:i];
-
 		if(section.yCoordinate > (offset - pixelMargin) && section.yCoordinate <  (offset + height + pixelMargin)){
 			end = section.section;
 		}
-
+		
 		if(start > end) end = start;
 	}
 

CHGridView.m

@@ -161,7 +161,7 @@ - (void)loadVisibleTileForIndexPath:(CHGridIndexPath)indexPath{
 		centeredRect.origin.y += rect.origin.y;
 		centeredRect.origin.x += rect.origin.x;
 		[tile setFrame:centeredRect];
-		[tile setAutoresizingMask:(UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin )];
+		[tile setAutoresizingMask:(UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin)];
 	}else{
 		[tile setFrame:rect];
 		[tile setAutoresizingMask:(UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth)];
@@ -178,7 +178,7 @@ - (void)loadVisibleTileForIndexPath:(CHGridIndexPath)indexPath{
 }
 
 - (void)reuseHiddenTiles{
-	NSMutableArray *toReuse = [[NSMutableArray alloc] init];
+	NSMutableArray *toReuse = [NSMutableArray array];
 
 	CGRect b = self.bounds;
 	CGFloat contentOffsetY = self.contentOffset.y;
@@ -193,8 +193,6 @@ - (void)reuseHiddenTiles{
 	for(CHTileView *tile in toReuse){
 		[self reuseTile:tile];
 	}
-
-	[toReuse release];
 }
 
 - (void)reuseTile:(CHTileView *)tile{
@@ -205,7 +203,7 @@ - (void)reuseTile:(CHTileView *)tile{
 }
 
 - (void)removeSectionTitleNotInRange:(CHSectionRange)range{
-	NSMutableArray *toDelete = [[NSMutableArray alloc] init];
+	NSMutableArray *toDelete = [NSMutableArray array];
 
 	for (CHSectionTitleView *title in visibleSectionTitles) {
 		if(title.section < range.start || title.section > range.end){
@@ -217,8 +215,6 @@ - (void)removeSectionTitleNotInRange:(CHSectionRange)range{
 		[title removeFromSuperview];
 		[visibleSectionTitles removeObject:title];
 	}
-
-	[toDelete release];
 }
 
 - (void)reloadData{
@@ -230,9 +226,13 @@ - (void)reloadData{
 
 	CGRect b = [self bounds];
 
-	if([dataSource respondsToSelector:@selector(numberOfSectionsInGridView:)])sections = [dataSource numberOfSectionsInGridView:self];
-	else sections = 1;
-
+	if([dataSource respondsToSelector:@selector(numberOfSectionsInGridView:)]){
+		sections = [dataSource numberOfSectionsInGridView:self];
+		if(sections == 0) sections = 1;
+	}else {
+		sections = 1;
+	}
+
 	[layout setGridWidth:b.size.width];
 	[layout setPadding:padding];
 	[layout setPerLine:perLine];
@@ -247,7 +247,6 @@ - (void)reloadData{
 	}
 
 	[layout updateLayout];
-
 	[self setNeedsLayout];
 }
 
@@ -273,7 +272,7 @@ - (void)layoutSubviews{
 	CHGridIndexRange tileRange = [layout rangeOfVisibleIndexesForContentOffset:contentOffsetY andHeight:b.size.height];
 	[self loadVisibleTilesForIndexPathRange:tileRange];
 
-	//if([gridDelegate respondsToSelector:@selector(visibleTilesChangedTo:)]) [gridDelegate visibleTilesChangedTo:visibleTiles.count];
+	if([gridDelegate respondsToSelector:@selector(visibleTilesChangedTo:)]) [gridDelegate visibleTilesChangedTo:visibleTiles.count];
 
 	if(sections <= 1) return;
 

CHTileView.m

@@ -11,7 +11,7 @@
 #import "CHTileView.h"
 
 @implementation CHTileView
-@synthesize indexPath, selected, highlighted, reuseIdentifier, shadowOffset, shadowColor, shadowBlur;
+@synthesize indexPath, selected, highlighted, contentBackgroundColor, reuseIdentifier, shadowOffset, shadowColor, shadowBlur;
 
 - (id)initWithFrame:(CGRect)frame reuseIdentifier:(NSString *)reuseId{
 	if(self = [super initWithFrame:frame]){

README.markdown

@@ -60,7 +60,7 @@ If you disable scrolling with `setScrollingEnabled`, you can probably use this a
 
 I've tested CHGridView informally with a test application on both my iPhones. For my data source, I used 31 images to populate 1,984 tiles separated with 64 sections. They were exported from iPhoto as PNGs with a maximum width of 160 pixels. The images were drawn centered in CHImageTileView. Scrolling performance is not as good as Apple's Photos grid view, especially on my original iPhone.
 
-- Original iPhone: average 10 - 25 fps.
+- Original iPhone: about 12 - 30 fps.
 - iPhone 3G3: average 30 - 50 fps.
 
 Admittedly, performance could be better. I'm not an incredibly experienced programmer, so I'm not privy to a lot of formal programming knowledge. If you see something that could be better, send an email to [me@cameron.io](mailto:me@cameron.io).