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2014/10/15 ¤U¤È 10:13:04
iphone Programming Glossary: quartzHow to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage.. to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage held in receiver self UInt8 pixelByteData A pointer to the first pixel element in an array RGBPixel..
Cocoa Graphing/Plotting Framework that Works on iPhoneOS [closed] http://stackoverflow.com/questions/263472/cocoa-graphing-plotting-framework-that-works-on-iphoneos to a new iPhone app in development ala the Stocks app . I realize I could buckle down and do some Quartz drawing but I'm hoping that someone somewhere has a tip on a Cocoa graphing framework that works on..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints CALayer and Off Screen Rendering render the next page for fast smooth display Documentation Quartz PDFObjects Used for meta info annotations thumbs Abobe PDF Spec Example projects Apple ZoomingPDF zooming..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz PDF hyperlinks on iOS with Quartz I've spent all day trying to get hyperlinks metadata from PDFs in my iPad application. The CGPDF APIs..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview in Cocoa Touch. I understand that I should use CGContextSetShadow to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone programming and would like to draw a line to the phone screen for the purpose of study using Quartz and UIKit. How do I start drawing iphone cocoa touch quartz graphics share improve this question..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone struct RGBPixel byte red byte green byte blue RGBPixel Step 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage held in receiver self UInt8 pixelByteData A pointer to the.. with corresponding synthesized properties Reference to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage held in receiver self UInt8 pixelByteData A pointer to the first pixel element in an array RGBPixel pixelData Step 4. Subclass code I put in a method named..
Cocoa Graphing/Plotting Framework that Works on iPhoneOS [closed] http://stackoverflow.com/questions/263472/cocoa-graphing-plotting-framework-that-works-on-iphoneos on iPhoneOS closed Looking at adding some data graphing to a new iPhone app in development ala the Stocks app . I realize I could buckle down and do some Quartz drawing but I'm hoping that someone somewhere has a tip on a Cocoa graphing framework that works on iPhoneOS. Any suggestions It would be a shame to re invent the..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints I guess it's an encoding issue but I'm not sure Credit BrainFeeder CALayer and Off Screen Rendering render the next page for fast smooth display Documentation Quartz PDFObjects Used for meta info annotations thumbs Abobe PDF Spec Example projects Apple ZoomingPDF zooming UIScrollView CATiledLayer vfr reader zooming paging UIScrollView..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz PDF hyperlinks on iOS with Quartz I've spent all day trying to get hyperlinks metadata from PDFs in my iPad application. The CGPDF APIs are a true nightmare and the only piece of information I've..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview I'm trying to draw a shadow under the bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow passing the appropriate values. Perform all the drawing to..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone do I draw a line on the iPhone I am a beginner at iPhone programming and would like to draw a line to the phone screen for the purpose of study using Quartz and UIKit. How do I start drawing iphone cocoa touch quartz graphics share improve this question The first step is to define a subclass of UIView to create..
How do I add a gradient to the text of a UILabel, but not the background? http://stackoverflow.com/questions/1266179/how-do-i-add-a-gradient-to-the-text-of-a-uilabel-but-not-the-background Unicode text properly. What the code does is it flips the drawing context vertically the iPhone inverts the normal Quartz coordinate system on for the Y axis sets the text drawing mode to intersect the drawn text with the clipping path clips..
How can i create a PDF file programmatically in an iphone application? http://stackoverflow.com/questions/1360912/how-can-i-create-a-pdf-file-programmatically-in-an-iphone-application generate a PDF file for that action. Any Suggestion. iphone share improve this question See pg 35 of Drawing with Quartz to see how to create a PDF Graphics Context. Some notes iPhoneOSNote If you want to create a PDF graphics context in an..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone blue RGBPixel Step 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage held in receiver.. Reference to Quartz CGImage for receiver self CFDataRef bitmapData Buffer holding raw pixel data copied from Quartz CGImage held in receiver self UInt8 pixelByteData A pointer to the first pixel element in an array RGBPixel pixelData Step..
Cocoa Graphing/Plotting Framework that Works on iPhoneOS [closed] http://stackoverflow.com/questions/263472/cocoa-graphing-plotting-framework-that-works-on-iphoneos some data graphing to a new iPhone app in development ala the Stocks app . I realize I could buckle down and do some Quartz drawing but I'm hoping that someone somewhere has a tip on a Cocoa graphing framework that works on iPhoneOS. Any suggestions..
Drawing formulas with Quartz 2d http://stackoverflow.com/questions/2907045/drawing-formulas-with-quartz-2d formulas with Quartz 2d In my iPhone App I'd like to draw a few formulas. How can I manage that with quartz 2d Is there a way to build formulas.. the rules of that particular operation. For rendering the visual elements of the operations within an equation I used Quartz to draw lines symbols etc. but most of the drawing was simply text drawn within a CALayer using the NSString text drawing..
What are some great Quartz 2D drawing tutorials? [closed] http://stackoverflow.com/questions/3463256/what-are-some-great-quartz-2d-drawing-tutorials are some great Quartz 2D drawing tutorials closed I'm searching for some great Quartz 2D drawing tutorials aimed at the iPhone. I'm new to Quartz.. are some great Quartz 2D drawing tutorials closed I'm searching for some great Quartz 2D drawing tutorials aimed at the iPhone. I'm new to Quartz and want to start off with something easy and then progress.. 2D drawing tutorials closed I'm searching for some great Quartz 2D drawing tutorials aimed at the iPhone. I'm new to Quartz and want to start off with something easy and then progress to more difficult stuff. Does anyone know of any Quartz 2D drawing..
iPhone - Draw transparent rectangle on UIView to reveal view beneath http://stackoverflow.com/questions/3800278/iphone-draw-transparent-rectangle-on-uiview-to-reveal-view-beneath NO topView.backgroundColor UIColor clearColor If you want to do circles you have to use Core Graphics aka Quartz 2D . You'll probably want to read the programming guide which is available here . To draw an ellipse instead of the rectangle..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints sure Credit BrainFeeder CALayer and Off Screen Rendering render the next page for fast smooth display Documentation Quartz PDFObjects Used for meta info annotations thumbs Abobe PDF Spec Example projects Apple ZoomingPDF zooming UIScrollView CATiledLayer..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz PDF hyperlinks on iOS with Quartz I've spent all day trying to get hyperlinks metadata from PDFs in my iPad application. The CGPDF APIs are a true nightmare..
http://stackoverflow.com/questions/4097044/pdf-search-on-the-iphone search on the iPhone After two days trying to read annotations from a PDF using Quartz I've managed to do it and posted my code . Now I'd like to do the same for another frequently asked question searching PDF.. it and posted my code . Now I'd like to do the same for another frequently asked question searching PDF documents with Quartz. Same situation as before this question has been asked many times with almost no practical answers. So I need some pointers..
pdf file text reading and searching http://stackoverflow.com/questions/5103281/pdf-file-text-reading-and-searching text into pdf file. here the link that i know. none of this help me out. Getting text position while parsing pdf with Quartz 2D HIghlighting the text in PDF document iPhone xcode http developer.apple.com library mac #documentation GraphicsImaging..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow passing the appropriate..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone I am a beginner at iPhone programming and would like to draw a line to the phone screen for the purpose of study using Quartz and UIKit. How do I start drawing iphone cocoa touch quartz graphics share improve this question The first step is..
Newbie wants to create a PDF reader for ipod touch - what's the best approach? http://stackoverflow.com/questions/93297/newbie-wants-to-create-a-pdf-reader-for-ipod-touch-whats-the-best-approach
Drawing rotated text with NSString drawInRect http://stackoverflow.com/questions/10289898/drawing-rotated-text-with-nsstring-drawinrect x axis and M_PI 2 would be 90 degrees below the x axis. But both turn up with nothing. Any thoughts thanks. iphone quartz graphics share improve this question I think what's happening is that you're rotating the text to a location outside..
Retrieving a pixel alpha value for a UIImage http://stackoverflow.com/questions/1042830/retrieving-a-pixel-alpha-value-for-a-uiimage mode my alpha values were what I expected CGContextSetBlendMode context kCGBlendModeCopy iphone uikit core graphics quartz graphics share improve this question Yes CGContexts have their y axis pointing up while in UIKit it points down. See..
How to create a UIImage from the current graphics context? http://stackoverflow.com/questions/1112947/how-to-create-a-uiimage-from-the-current-graphics-context a UIImage object that represents the graphics context. Any suggestions on how to do this iphone uiimage core graphics quartz graphics share improve this question I think you may need to setup the graphics context first UIGraphicsBeginImageContext..
Create a table of contents from a pdf file http://stackoverflow.com/questions/2556344/create-a-table-of-contents-from-a-pdf-file a table of contents from a pdf file I'm using quartz to display pdf content and I need to create a table of contents to navigate through the pdf. From reading Apple's documentation.. like to get to an array of NSDictionary objects with a title and matching page number. iphone objective c cocoa touch quartz 2d share improve this question Something like this might help you get started NSURL documentURL ... URL to file or http..
Drawing formulas with Quartz 2d http://stackoverflow.com/questions/2907045/drawing-formulas-with-quartz-2d formulas with Quartz 2d In my iPhone App I'd like to draw a few formulas. How can I manage that with quartz 2d Is there a way to build formulas like for example in latex Or are there any existing frameworks Thanks. iphone cocoa.. formulas like for example in latex Or are there any existing frameworks Thanks. iphone cocoa touch latex formula quartz 2d share improve this question As the developer of an iPhone application which does just that trust me when I say typesetting..
Cocoa Touch - Comparing Images http://stackoverflow.com/questions/3400707/cocoa-touch-comparing-images iphone cocoa touch uiimage share improve this question If you have two UIImages you should get their CGImageRef quartz representations from those objects. Then create two new bitmap contexts backed by a memory buffer that you create and pass.. drawing into them is here http developer.apple.com iphone library documentation GraphicsImaging Conceptual drawingwithquartz2d dq_context dq_context.html# apple_ref doc uid TP30001066 CH203 CJBHBFFE The difference for you is that you're drawing..
What are some great Quartz 2D drawing tutorials? [closed] http://stackoverflow.com/questions/3463256/what-are-some-great-quartz-2d-drawing-tutorials difficult stuff. Does anyone know of any Quartz 2D drawing tutorials that they would recommend iphone core graphics quartz graphics share improve this question I devoted an entire class to Quartz 2D drawing last semester in my advanced iPhone..
iPhone - Draw transparent rectangle on UIView to reveal view beneath http://stackoverflow.com/questions/3800278/iphone-draw-transparent-rectangle-on-uiview-to-reveal-view-beneath cut out rectangles on the blue view so that the red view can be visible. How do you go about doing this iphone uiview quartz graphics share improve this question You have to override the top view's drawRect method. So for example you might create..
http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle contextImage withName @ test.png return UIImage imageWithCGImage contextImage iphone cocoa touch math quartz graphics quartz 2d share improve this question I tried to work it out quickly on paper so i may be wrong Convert the.. withName @ test.png return UIImage imageWithCGImage contextImage iphone cocoa touch math quartz graphics quartz 2d share improve this question I tried to work it out quickly on paper so i may be wrong Convert the length of the string..
want to add manual erasing option in ipad painting application by quartz http://stackoverflow.com/questions/3863931/want-to-add-manual-erasing-option-in-ipad-painting-application-by-quartz to add manual erasing option in ipad painting application by quartz i am working on a painting application using Quartz 2D for ipad. now i want to add an eraser option so that user can manually..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz a button and put it on top of your page and use it to open the URL with UIApplication's openURL iphone ipad pdf quartz graphics share improve this question heres the basic idea to get to the annots CGPDFDictionary for each page atleast...
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now Felz and Void have each presented astounding solutions in the other specific question hope it helps. iphone ios cocoa quartz graphics runloop share improve this question Updates to the user interface happen at the end of the current pass through..
What are the alternatives to Core-Plot for drawing graphs in iPhone SDK http://stackoverflow.com/questions/5065416/what-are-the-alternatives-to-core-plot-for-drawing-graphs-in-iphone-sdk plot in my app. Lot of issues. Can you please suggest some alternatives to core plot iphone objective c cocoa touch quartz graphics core plot share improve this question Some of the alternatives that I found were http sebkade.wordpress.com..
iPhone smooth sketch drawing algorithm http://stackoverflow.com/questions/5076622/iphone-smooth-sketch-drawing-algorithm all the points in the array but I am not sure. Any Help would be much appreciated. Thankz in advance iphone drawing quartz graphics share improve this question The easiest way to smooth a curve like this is to use a Bezier curve instead of..
Graph generation on iPhone [closed] http://stackoverflow.com/questions/794562/graph-generation-on-iphone find any libraries that are confirmed to work on the iPhone. If you've written your own how did you go about it opengl quartz etc or if you used a library which one iphone cocoa touch share improve this question I have been keeping my eye on..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone a line to the phone screen for the purpose of study using Quartz and UIKit. How do I start drawing iphone cocoa touch quartz graphics share improve this question The first step is to define a subclass of UIView to create a space to draw in...
Drawing Smooth Curves - Methods Needed http://stackoverflow.com/questions/8702696/drawing-smooth-curves-methods-needed curves and all the other types. I am quite new to iPhone programming and do not understand how to program it in my quartz drawing app. A solid example would be greatly appreciated I have spent weeks running in circles and I can never seem to..
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