使用NSTextView伪造NSTextField以获得漂亮的颜色？
尝试更改NSTextField的选定文本背景颜色（我们有一个黑暗的UI，选定的文本背景几乎与文本本身相同），但只有NSTextView似乎允许我们更改它。
因此我们尝试使用NSTextView伪造NSTextField，但无法使文本滚动工作相同。
我们得到的最接近的是这段代码：
NSTextView *tf = [ [ NSTextView alloc ] initWithFrame: NSMakeRect( 30.0, 20.0, 80.0, 22.0 ) ];
// Dark UI
[tf setTextColor:[NSColor whiteColor]];
[tf setBackgroundColor:[NSColor darkGrayColor]];
// Fixed size
[tf setVerticallyResizable:FALSE];
[tf setHorizontallyResizable:FALSE];
[tf setAlignment:NSRightTextAlignment]; // Make it right-aligned (yup, we need this too)
[[tf textContainer] setContainerSize:NSMakeSize(2000, 20)]; // Try to Avoid line wrapping with this ugly hack
[tf setFieldEditor:TRUE]; // Make Return key accept the textfield
// Set text properties
NSMutableDictionary *dict = [[[tf selectedTextAttributes] mutableCopy ] autorelease];
[dict setObject:[NSColor orangeColor] forKey:NSBackgroundColorAttributeName];
[tf setSelectedTextAttributes:dict];
@interface ColoredTextField : NSTextField
- (BOOL)becomeFirstResponder;
@end
@implementation ColoredTextField
- (BOOL)becomeFirstResponder
{
if (![super becomeFirstResponder])
return NO;
NSDictionary * attributes = [NSDictionary dictionaryWithObjectsAndKeys :
[NSColor orangeColor], NSBackgroundColorAttributeName, nil];
NSTextView * fieldEditor = (NSTextView *)[[self window] fieldEditor:YES forObject:self];
[fieldEditor setSelectedTextAttributes:attributes];
return YES;
}
@end
@interface ColoredTextField : NSTextField
- (BOOL)becomeFirstResponder;
- (void)textDidEndEditing:(NSNotification *)notification;
- (void)setSelectedColor;
@end
@implementation ColoredTextField
- (BOOL)becomeFirstResponder
{
if (![super becomeFirstResponder])
return NO;
[self setSelectedColor];
return YES;
}
- (void)textDidEndEditing:(NSNotification *)notification
{
[super textDidEndEditing:notification];
[self setSelectedColor];
}
- (void) setSelectedColor
{
NSDictionary * attributes = [NSDictionary dictionaryWithObjectsAndKeys :
[NSColor orangeColor], NSBackgroundColorAttributeName, nil];
NSTextView * fieldEditor = (NSTextView *)[[self window] fieldEditor:YES forObject:self];
[fieldEditor setSelectedTextAttributes:attributes];
}
@end
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嗜蒂谷尘旱
NSDictionary * attributes = [NSDictionary dictionaryWithObjectsAndKeys: [NSColor orangeColor], NSBackgroundColorAttributeName, nil]; NSTextView * fieldEditor = (NSTextView *)[[self window] fieldEditor:YES forObject:textField]; [fieldEditor setSelectedTextAttributes:attributes];