CocoaDev

The cell CCDTextField uses to get things done.

// CCDTextFieldCell.h #import <AppKit/AppKit.h> #import “CCDPTextView.h” #import “NSBezierPathCategory.h”

@interface CCDTextFieldCell : NSTextFieldCell { NSButtonCell *leftCell; NSButtonCell *rightCell;

    NSColor *labelColor;

    NSImage *scratch;
    BOOL isAnimating; }

• (void)setLabelColor:(NSColor *)lColor;

• (NSColor *)labelColor;

• (void)setAnimating:(BOOL)animating;
• (BOOL)isAnimating;

// modeled after NSSearchFieldCell

• (void)setLeftButtonCell:(id)cell;

• (id)leftButtonCell;

• (void)setRightButtonCell:(id)cell;

• (id)rightButtonCell;

• (NSRect)leftButtonRectForBounds:(NSRect)bounds;
• (NSRect)rightButtonRectForBounds:(NSRect)bounds;

// These return the same rect.

• (NSRect)titleRectForBounds:(NSRect)bounds; // inherited from NSCell but never called

• (NSRect)textRectForBounds:(NSRect)bounds; // modeled after NSSearchFieldCell

• (NSRect)labelRectForBounds:(NSRect)bounds; // must support labels

@end

// CCDTextFieldCell.m #import “CCDTextFieldCell.h”

@implementation CCDTextFieldCell

• (id)initTextCell:(NSString *)txt { if (self = [super initTextCell:txt]) {

    leftCell = [[NSButtonCell alloc] initImageCell:nil];
    rightCell = [[NSButtonCell alloc] initImageCell:nil];
  
        [leftCell setButtonType:NSMomentaryChangeButton];
        [leftCell setBezelStyle:NSRegularSquareBezelStyle];
        [leftCell setBordered:NO];
        [leftCell setImagePosition:NSImageOnly];
  
        [rightCell setButtonType:NSMomentaryChangeButton];
        [rightCell setBezelStyle:NSRegularSquareBezelStyle];
        [rightCell setBordered:NO];
        [rightCell setImagePosition:NSImageOnly];
  
        scratch = [[NSImage alloc] initWithSize:[self cellSize]];
        [scratch setFlipped:YES];   }
  

  return self; }

• (void)dealloc { [leftCell release]; [rightCell release]; [scratch release]; [labelColor release];

  [super dealloc]; }

#pragma mark Setters/Getters

• (void)setLeftButtonCell:(id)cell { [leftCell release]; leftCell = [cell retain]; }

• (id)leftButtonCell { return leftCell; }

• (void)setRightButtonCell:(id)cell { [rightCell release]; rightCell = [cell retain]; }

• (id)rightButtonCell { return rightCell; }

• (void)setLabelColor:(NSColor *)lColor { [labelColor autorelease]; labelColor = lColor; [labelColor retain]; }

• (NSColor *)labelColor { return labelColor; }

• (void)setAnimating:(BOOL)animating { isAnimating = animating; }

• (BOOL)isAnimating { return isAnimating; }

#pragma mark Sizing

• (NSRect)textRectForBounds:(NSRect)bounds { NSRect rect = NSInsetRect(bounds, 2, 2); rect.size.height = [super drawingRectForBounds:bounds].size.height;

  { // Modify the bounds rect so our text gets drawn between our cells… NSSize leftSize = [leftCell cellSize]; NSSize rightSize = [rightCell cellSize];

    rect.origin.x += leftSize.width;
    rect.size.width -= leftSize.width;
      
    rect.size.width -= rightSize.width;
  
    // Deal with our rounded variation...
    if ([self bezelStyle] == NSTextFieldRoundedBezel) {
        if (leftSize.width == 1) {
            rect.origin.x += 5;
            rect.size.width -= 5;
        }
        if (rightSize.width == 1)
            rect.size.width -= 5;
    }
  

  }

  return rect; }

• (NSRect)leftButtonRectForBounds:(NSRect)bounds { NSRect leftRect = NSMakeRect(0,0,0,0); leftRect.size = [leftCell cellSize]; return leftRect; }

• (NSRect)rightButtonRectForBounds:(NSRect)bounds { NSRect rightRect = NSMakeRect(0,0,0,0);

  rightRect.size = [rightCell cellSize]; rightRect.origin.x = bounds.size.width - rightRect.size.width;

  return rightRect; }

• (NSRect)labelRectForBounds:(NSRect)bounds { NSRect labelRect = [self textRectForBounds:bounds]; if (![self isHighlighted]) { // guesses.. labelRect.origin.x += 3; labelRect.origin.y += 2; labelRect.size.width -= 3; } else labelRect = [self rightButtonRectForBounds:bounds]; // mimic Finder?

  return labelRect; }

• (NSRect)drawingRectForBounds:(NSRect)theRect { return [self textRectForBounds:theRect]; }

#pragma mark Drawing

• (BOOL)showsFirstResponder { return NO; }

• (BOOL)drawsBackground { return NO; }

• (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView { NSImage *progress; NSRect pRect, lRect = [self labelRectForBounds:cellFrame]; NSColor *lColor = [self labelColor]; NSImage *superImage = [[NSImage alloc] initWithSize:cellFrame.size]; [superImage setFlipped:YES]; [scratch setSize:cellFrame.size];

        [superImage lockFocus]; // We want what would normally go in the controlView in an image instead.
        [super drawWithFrame:cellFrame inView:[NSView focusView]];
        [superImage unlockFocus];
  

  if ([controlView respondsToSelector:@selector(progressIndicator)]) { // grab the progress.. NSProgressIndicator *indicator = [(CCDTextField *)controlView progressIndicator]; pRect = NSOffsetRect([controlView bounds], 4, 4); progress = [[NSImage alloc] initWithSize:pRect.size]; [progress setFlipped:YES];

        [progress lockFocus]; // draw the progress
        [indicator setFrameSize:pRect.size]; 
        [indicator drawRect:[indicator bounds]];   
        [progress unlockFocus];   }
  

  [scratch lockFocus]; // composite.. [[NSColor whiteColor] set]; NSRectFill(cellFrame); // clear scratch of any previous drawing

  if (isAnimating) // progress.. [progress drawAtPoint:NSZeroPoint fromRect:NSInsetRect(cellFrame, 2, 4) operation:NSCompositeSourceOver fraction:1];

  if (lColor) { // label.. [lColor set]; [NSBezierPath fillRoundRectInRect:lRect radius:90]; // no clue if this is right, wish it was a little rounder though. }

  [superImage drawAtPoint:NSZeroPoint fromRect:cellFrame operation:NSCompositeDestinationAtop fraction:1]; [scratch unlockFocus];

  // draw it [scratch drawAtPoint:NSZeroPoint fromRect:cellFrame operation:NSCompositeSourceOver fraction:1]; [super drawInteriorWithFrame:cellFrame inView:controlView];

  { // draw the left and right cells as needed [leftCell drawWithFrame:[self leftButtonRectForBounds:cellFrame] inView:controlView]; [rightCell drawWithFrame:[self rightButtonRectForBounds:cellFrame] inView:controlView]; } }

#pragma mark Cursor

• (void)resetCursorRect:(NSRect)cellFrame inView:(NSView *)controlView { [super resetCursorRect:[self textRectForBounds:cellFrame] inView:controlView]; }

#pragma mark Selection Handling static id lastView;

• (void)selectWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject start:(int)selStart length:(int)selLength { NSEvent *curEvent = [NSApp currentEvent]; NSPoint mouseLoc= [controlView convertPoint:[curEvent locationInWindow] fromView:nil];

  if (![lastView isEqualTo:controlView]) { if ([curEvent type] == NSKeyDown) [super selectWithFrame:aRect inView:controlView editor:textObj delegate:anObject start:selStart length:selLength]; else if (!NSPointInRect(mouseLoc, [self textRectForBounds:[controlView bounds]])) [super selectWithFrame:aRect inView:controlView editor:textObj delegate:anObject start:0 length:self stringValue] length; else [super editWithFrame:aRect inView:controlView editor:textObj delegate:anObject event:curEvent];

       lastView = controlView;
       return;   }
  

  if (!NSPointInRect(mouseLoc, [self textRectForBounds:[controlView bounds]])) { NSRange range = [(CCDPTextView*)textObj prvtSelectedRange]; selStart = range.location; selLength = range.length; [super selectWithFrame:aRect inView:controlView editor:textObj delegate:anObject start:selStart length:selLength]; return; }

  [super editWithFrame:aRect inView:controlView editor:textObj delegate:anObject event:curEvent]; }

@end

11/21; Added cursor handling and changed the default button highlighting.

11/25; Added the Selection Handling section.

11/29; Added the progress drawing.

12/2; Cleaned up some and added support for colored labels.

4/8; CCDImageCategory wasn’t needed, as described on its page.