* New: TTTableView contentOrigin

gsidaytrader · Aug 7, 2009 · 0964fe9 · 0964fe9
1 parent 94bab41
commit 0964fe9
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Showing 2 changed files with 32 additions and 1 deletion.
diff --git a/src/TTTableView.m b/src/TTTableView.m
@@ -12,7 +12,7 @@
 
 @implementation TTTableView
 
-@synthesize highlightedLabel = _highlightedLabel;
+@synthesize highlightedLabel = _highlightedLabel, contentOrigin = _contentOrigin;
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // NSObject
@@ -21,6 +21,7 @@ - (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)style {
   if (self = [super initWithFrame:frame style:style]) {
     _highlightedLabel = nil;
     _highlightStartPoint = CGPointZero;
+    _contentOrigin = 0;
   }
   return self;
 }
@@ -64,9 +65,37 @@ - (void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
   }
 }
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// UIScrollView
+
+- (void)setContentSize:(CGSize)size {
+  if (_contentOrigin) {
+    CGFloat minHeight = self.height + _contentOrigin;
+    if (size.height < minHeight) {
+      size.height = self.height + _contentOrigin;
+    }
+  }
+
+  CGFloat y = self.contentOffset.y;
+  [super setContentSize:size];
+
+  if (_contentOrigin) {
+    self.contentOffset = CGPointMake(0, y);
+  }
+}
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // UITableView
 
+- (void)reloadData {
+  CGFloat y = self.contentOffset.y;
+  [super reloadData];
+
+  if (_contentOrigin) {
+    self.contentOffset = CGPointMake(0, y);
+  }
+}
+
 - (void)selectRowAtIndexPath:(NSIndexPath *)indexPath animated:(BOOL)animated
         scrollPosition:(UITableViewScrollPosition)scrollPosition {
   if (!_highlightedLabel) {

diff --git a/src/Three20/TTTableView.h b/src/Three20/TTTableView.h
@@ -13,8 +13,10 @@
 @interface TTTableView : UITableView {
   TTStyledTextLabel* _highlightedLabel;
   CGPoint _highlightStartPoint;
+  CGFloat _contentOrigin;
 }
 
 @property(nonatomic,retain) TTStyledTextLabel* highlightedLabel;
+@property(nonatomic) CGFloat contentOrigin;
 
 @end