MacOS X Cocoa Programming for Vision Scientist --- #1

Transcription

1 MacOS X Cocoa Programming for Vision Scientist --- #1 (by Izumi Ohzawa, ) 1. Best desktop OS with ease of use and excellent programming environment. 2. OS Darwin BSD Unix Open Source. (Unix 3. Good imaging model: PDF PDF PDF Illustrator PowerPoint 4. OS Xcode 5. No known virus and spyware crap. Windows 6. Intel CPU Virtual PC VMware Windows MacOS X virtual machine Best of both worlds. desktop MacOS X MacOS X Cocoa API Cocoa API Objective-C Objective-C C++ powerful C Objective-C C++ Objective-C URL [ Cocoa 1997 Apple NeXT

2 NeXTSTEP/OpenStep Steve Jobs (Apple founder, NeXT CEO, Apple & Pixar CEO) Apple Cocoa NSObject (NS: NextStep) Apple API C API Cocoa Carbon Carbon Cocoa Objective-C Objective-C SmallTalk C SmallTalk Objective-C C int, float, double C Objective-C SmallTalk Sun 1990 Java Objective-C C++ ] Object (encapsulation) Object message Object C Object Object black box Object 2

3 [ ] Objective-C [receiver message] receiver message myrect display [myrect display]; myrect (30.0, 50.0) [myrect setorigin:30.0 :50.0]; setorigin:: setwidth:height: 2 [myrect setwidth:10.0 height:15.0]; makegroup: 1 (group) 3 [receiver makegroup:group, memberone, membertwo, memberthree]; C myrect isfilled YES NO BOOL isfilled; isfilled = [myrect isfilled]; (added by Izumi): float 3

4 float grating1contrast; grating1contrast = [sender floatvalue]: [myrect setprimarycolor:[otherrect primarycolor]]; nil nil nil nil Objective-C Class Interface file (*.h) Implementation file (*.m) Class Interface file (*.h) Examples/AppKit/DotView/DotView.h #import DotView : NSView { // DotView NSView subclass // { instance NSPoint center; // NSColor *color; // instance float radius; // instance // subclass NSView method - (void)drawrect:(nsrect)rect; // color radius - (IBAction)setRadius:(id)sender; // action message method - (IBAction)setColor:(id)sender; // action message method Interface file DotView methods Object message Object class (superclass; NSView ) message method 4

5 1. method message method "setcolor:" 2. Class 3. Method setwidth:height: Implementation file (*.m) Examples/AppKit/DotView/DotView.m #import <Cocoa/Cocoa.h> #import DotView // // interface file // DotView implementation - (void)drawrect:(nsrect)rect { // View NSRect dotrect; // Rectangle [[NSColor whitecolor] set]; // C NSRectFill([self bounds]); // Veiw (bounds) dotrect.origin.x = center.x - radius; dotrect.origin.y = center.y - radius; dotrect.size.width = 2 * radius; dotrect.size.height = 2 * radius; [color set]; // instance [[NSBezierPath bezierpathwithovalinrect:dotrect] fill]; // message DotView instance // float instance radius // // DotView sender // DotView sender float // DotView self ( DotView display // - (void)setradius:(id)sender { // sender message object radius = [sender floatvalue]; [self setneedsdisplay:yes]; - (void)setcolor:(id)sender { [color autorelease]; color = [[sender color] retain]; [self setneedsdisplay:yes]; Method, - (void)setradius:(id)sender; GUI action message 5

6 [ HMDT ] Class Objective-C MyClassA : NSObject { - MyClassA - (void)method0 { class MyClassA { public: void method0(); ; void MyClassA::method0() { Objective-C message id a = [[MyClassA alloc] init]; [a method0]; C++ MyClassA a; a.method0(); MyClassA * pa = new MyClassA (); pa->method0(); (inheritance) method Objective-C B : A { - B - (void)method1 { class B : public A { public: void method1(); ; void B::method1() { 6

7 Apple Developer Connnection ( ) Cocoa Programming Tips Sketch (/Developer/Examples/Appkit/Sketch/ ) C++ ( ) O'Reilly MacDevCenter: Programming with Cocoa Beginning Mac Development 7