Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
Relevant replacement documents include:
Source/CocoaUI/AppleDemoFilter_GraphView.h
/* |
File: AppleDemoFilter_GraphView.h |
Abstract: AppleDemoFilter_GraphView.h |
Version: 1.01 |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple |
Inc. ("Apple") in consideration of your agreement to the following |
terms, and your use, installation, modification or redistribution of |
this Apple software constitutes acceptance of these terms. If you do |
not agree with these terms, please do not use, install, modify or |
redistribute this Apple software. |
In consideration of your agreement to abide by the following terms, and |
subject to these terms, Apple grants you a personal, non-exclusive |
license, under Apple's copyrights in this original Apple software (the |
"Apple Software"), to use, reproduce, modify and redistribute the Apple |
Software, with or without modifications, in source and/or binary forms; |
provided that if you redistribute the Apple Software in its entirety and |
without modifications, you must retain this notice and the following |
text and disclaimers in all such redistributions of the Apple Software. |
Neither the name, trademarks, service marks or logos of Apple Inc. may |
be used to endorse or promote products derived from the Apple Software |
without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or |
implied, are granted by Apple herein, including but not limited to any |
patent rights that may be infringed by your derivative works or by other |
works in which the Apple Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND |
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. |
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL |
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, |
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED |
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), |
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE |
POSSIBILITY OF SUCH DAMAGE. |
Copyright (C) 2012 Apple Inc. All Rights Reserved. |
*/ |
#import <Cocoa/Cocoa.h> |
#import "Filter.h" |
/************************************************************************************************************/ |
/* NOTE: It is important to rename ALL ui classes when using the XCode Audio Unit with Cocoa View template */ |
/* Cocoa has a flat namespace, and if you use the default filenames, it is possible that you will */ |
/* get a namespace collision with classes from the cocoa view of a previously loaded audio unit. */ |
/* We recommend that you use a unique prefix that includes the manufacturer name and unit name on */ |
/* all objective-C source files. You may use an underscore in your name, but please refrain from */ |
/* starting your class name with an undescore as these names are reserved for Apple. */ |
/************************************************************************************************************/ |
@interface AppleDemoFilter_GraphView : NSView |
{ |
NSRect mGraphFrame; // This is the frame of the drawing area of the view |
float mActiveWidth; // The usable portion of the graph |
NSPoint mEditPoint; // This is the current location in the drawing area that is active |
BOOL mMouseDown; // True if the mouse is currently down |
NSColor *curveColor; // the current color of the graph curve |
NSImage *mBackgroundCache; // An image cache of the background so that we don't have to re-draw the grid lines and labels all the time |
float mRes; // internal copy of the resonance value |
float mFreq; // internal copy of the frequency value |
NSBezierPath *mCurvePath; // The bezier path that is used to draw the curve. |
NSDictionary *mDBAxisStringAttributes; // Text attributes used to draw the strings on the db axis |
NSDictionary *mFreqAxisStringAttributes; // Text attributes used to draw the strings on the frequency axis |
} |
-(void) setRes: (float) res; // sets the graph's internal resonance value (to match the au) |
-(void) setFreq: (float) freq; // sets the graphs' internal frequency value (to match the au |
-(float)getRes; // gets the graph's internal resonance value (so the au can match the graph) |
-(float)getFreq; // gets the graph's internal frequency value (so the au can match the graph) |
-(double) locationForFrequencyValue: (double) value; // converts a frequency value to the pixel coordinate in the graph |
-(double) locationForDBValue: (double) value; // converts a db value to the pixel coordinate in the graph |
-(FrequencyResponse *) prepareDataForDrawing: (FrequencyResponse *) data; // prepares the data for drawing by initializing frequency fields based on values on pixel boundaries |
-(void) plotData: (FrequencyResponse *) data; // draws the curve data |
-(void) disableGraphCurve; // update the view, but don't draw the curve (used when the AU is not initialized and the curve can not be retrieved) |
-(void) handleBeginGesture; // called when parameter automation started |
-(void) handleEndGesture; // called when parameter automation finished |
@end |
Copyright © 2012 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2012-08-28