Objective-C/Cocoa | Spinner Drawing Problem

[Ray_Barber]

First of all I’m sorry I post my question here, but I don’t know any good forums for Cocoa questions and I know there are some very talented coders here on MacScripter.net.

I recently succeeded my application PDFMaker in AppleScript Studio, and now I want to completely rewrite it in Objective-C just for testing my self and learning new things. But I encountered a problem.

I wanted to programatically make a panel with a simple NSProgressIndicator in spinning style. I succeed in making that panel, but when I attach it to the main window I get some white behind the spinner i[/i]. I attach the panel thru the beginSheet:modalForWindow:modalDelegate:didEndSelector:contextInfo:-method of NSApplication.

This is the subclass:
IEFProgressPanel.h

@interface IEFProgressPanel : NSPanel {
NSProgressIndicator *spinner;
NSView *contentView;
}

• (id)newPanel;

• (NSProgressIndicator *)spinner;
  @end

IEFProgressPanel.m

#define PANEL_WIDTH 350.0
#define PANEL_HEIGHT 100.0

#define SPINNER_SIZE 50.0

@implementation IEFProgressPanel

• (id)newPanel {
  IEFProgressPanel *newPanel = [[IEFProgressPanel alloc] initWithContentRect:NSMakeRect(0, 0, PANEL_WIDTH, PANEL_HEIGHT)
  styleMask:NSUtilityWindowMask
  backing:NSBackingStoreBuffered
  defer:NO];
  return newPanel;
  }

• (id)initWithContentRect:(NSRect)contentRect styleMask:(int)windowStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)deferCreation {
  self = [super initWithContentRect:contentRect styleMask:windowStyle backing:bufferingType defer:deferCreation];
  if(self) {
  // make and setup spinner
  spinner = [[NSProgressIndicator alloc] initWithFrame:NSMakeRect((contentRect.size.width - SPINNER_SIZE) / 2.0,
  (contentRect.size.height - SPINNER_SIZE) / 2.0,
  SPINNER_SIZE,
  SPINNER_SIZE)];
  [spinner setStyle:NSProgressIndicatorSpinningStyle];

    // make new content view
    contentView = [[NSView alloc] initWithFrame:contentRect];
    
    // add subview
    [contentView addSubview:spinner];
    [spinner release];
    
    // set content view
    [self setContentView:contentView];
    [contentView release];
    
    // set shadow
    [self setHasShadow:YES];
  

  }

  return self;
  }

• (NSProgressIndicator *)spinner {
  return spinner;
  }

• (void)dealloc {
  [spinner dealloc];
  [contentView dealloc];
  [super dealloc];
  }
  @end

My original idea was not to attach it to the main window as a sheet. But make a translucent panel in the middle of the main window. But that’s something beyond my limits now.

Hope someone can help me,
ief2

OEPS: I actually intended to place it at Applescript Studio & Xcode

[StefanK]

Hi,

why programmatically?

[Ray_Barber]

To take less memory I think. I originally wanted to load the window/panel from another nib, but I had no idea how to do that.

[StefanK]

If it’s only a panel and you’re using beginSheet:modalForWindow:modalDelegate:didEndSelector:contextInfo: you can have the panel in the same nib. Memory does not really matter.

[Ray_Barber]

Alright, thank you