Added support to set placeholder insets (#1908). Close #1907

Author: Luís Portela Afonso

CHANGELOG.md

@@ -26,6 +26,7 @@ This release closes the [8.0.0 milestone](https://github.com/jessesquires/JSQMes
 - Send button now can be turned on/off manually. (#1575, #1609) Thanks @sebastianludwig!
 - Video message items now have a custom thumbnail option. (#628, #709, #1408, #1823) Thanks @weekwood, @benjaminhallock!
 - A new class `JSQMessagesVideoThumbnailFactory` now can generate thumbnail images from `AVURLAsset`. (#709, #1823) Thanks @weekwood, @Lucashuang0802!
+- Added a `placeHolderInsets` property to `JSQMessagesComposerTextView` to allow insetting the placeholder text. (#1908)
 
 ### Fixes
 

JSQMessagesTests/ViewTests/JSQMessagesComposerTextViewTests.m

@@ -65,6 +65,20 @@ - (void)testComposerTextViewInit
     XCTAssertEqual(self.textView.keyboardAppearance, UIKeyboardAppearanceDefault, @"Property should be equal to default value");
     XCTAssertEqual(self.textView.keyboardType, UIKeyboardTypeDefault, @"Property should be equal to default value");
     XCTAssertEqual(self.textView.returnKeyType, UIReturnKeyDefault, @"Property should be equal to default value");
+    
+    XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(self.textView.placeHolderInsets, UIEdgeInsetsMake(5.0, 7.0, 5.0, 7.0)), @"Property should be equal to default value");
+}
+
+- (void)testComposerTextViewPlaceholderInsets
+{
+    // New insets to draw the placeholder
+    UIEdgeInsets placeholderInsets = UIEdgeInsetsMake(2.0, 4.0, 2.0, 0.0);
+    
+    // Set the new insets into the contentView
+    self.textView.placeHolderInsets = placeholderInsets;
+    
+    // Validate if placeholderInsets setter worked. We may validate the draw...
+    XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(self.textView.placeHolderInsets, placeholderInsets), @"Property placeholderInsets should have changed to (2.0, 4.0, 2.0, 0.0)");
 }
 
 @end

JSQMessagesViewController/Views/JSQMessagesComposerTextView.h

@@ -54,6 +54,11 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @property (strong, nonatomic) UIColor *placeHolderTextColor;
 
+/**
+ *  The insets to be used when the placeholder is drawn. The default value is `UIEdgeInsets(5.0, 7.0, 5.0, 7.0)`.
+ */
+@property (assign, nonatomic) UIEdgeInsets placeHolderInsets;
+
 /**
  *  The object that acts as the paste delegate of the text view.
  */

JSQMessagesViewController/Views/JSQMessagesComposerTextView.m

@@ -68,6 +68,7 @@ - (void)jsq_configureTextView
 
     _placeHolder = nil;
     _placeHolderTextColor = [UIColor lightGrayColor];
+    _placeHolderInsets = UIEdgeInsetsMake(5.0, 7.0, 5.0, 7.0);
 
     [self associateConstraints];
 
@@ -169,6 +170,16 @@ - (void)setPlaceHolderTextColor:(UIColor *)placeHolderTextColor
     [self setNeedsDisplay];
 }
 
+- (void)setPlaceHolderInsets:(UIEdgeInsets)placeHolderInsets
+{
+    if (UIEdgeInsetsEqualToEdgeInsets(placeHolderInsets, _placeHolderInsets)) {
+        return;
+    }
+    
+    _placeHolderInsets = placeHolderInsets;
+    [self setNeedsDisplay];
+}
+
 #pragma mark - UITextView overrides
 
 
@@ -220,8 +231,8 @@ - (void)drawRect:(CGRect)rect
 
     if ([self.text length] == 0 && self.placeHolder) {
         [self.placeHolderTextColor set];
-
-        [self.placeHolder drawInRect:CGRectInset(rect, 7.0f, 5.0f)
+        
+        [self.placeHolder drawInRect:UIEdgeInsetsInsetRect(rect, self.placeHolderInsets)
                       withAttributes:[self jsq_placeholderTextAttributes]];
     }
 }