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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Rotate Bitmap 90 - /CodeWarrior (OS 9)/Rotate.c</title>
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<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/LegacyTechnologies/index.html">Legacy Documents</a> > <a href="../../samplecode/LegacyTechnologies/idxGraphicsImaging-date.html">Graphics & Imaging</a> > <A HREF="javascript:location.replace('index.html');">Rotate Bitmap 90</A> >
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<div style="width:100%; position:fixed;"><div align="center" id="watermark" style="position: relative; margin-left:auto; margin-right:auto; z-index:20; width:500px;"><div class="legacybox"><h1>Legacy Document<span class=closebutton><a href="javascript:closeWatermark()"><img src="../../images/closebutton.png" width="14" height="14" border="0" alt="close button"></a></span></h1>
<p><strong>Important: </strong>This document is part of the Legacy section of the ADC Reference Library. This information should not be used for new development.</p>
<div class="reflibtopic">
<p>Current information on this Reference Library topic can be found here:</p>
<ul>
<li><a href="http://developer.apple.com/referencelibrary/GraphicsImaging/index.html" target="_blank">Reference Library > Graphics & Imaging</a></li>
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<td><h1><div id="pagehead">Rotate Bitmap 90</div></h1></td>
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<h2>/CodeWarrior (OS 9)/Rotate.c</h2>
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<p><strong>View Source Code:</strong>
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<option value="listing1.html">/CodeWarrior (OS 9)/CarbonPrefix.h</option>
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<option value="listing3.html">/ProjectBuilder (OS X)/CarbonPrefix.h</option>
<option value="listing4.html">/ProjectBuilder (OS X)/Rotate.c</option>
<option value="listing5.html">/ProjectBuilder (OS X)/Rotate_Bitmap_90_Prefix.h</option></select>
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<p><strong><a href="Rotate_Bitmap_90.zip">Download Sample</a></strong> (“Rotate_Bitmap_90.zip”, 40.7K)<BR>
<strong><a href="Rotate_Bitmap_90.dmg">Download Sample</a></strong> (“Rotate_Bitmap_90.dmg”, 97.3K)</p>
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<pre class="sourcecodebox">/* File: Rotate.c Contains: Rotates a bitmap 90 degrees Written by: Copyright: Copyright © 1984-1999 by Apple Computer, Inc., All Rights Reserved. You may incorporate this Apple sample source code into your program(s) without restriction. This Apple sample source code has been provided "AS IS" and the responsibility for its operation is yours. You are not permitted to redistribute this Apple sample source code as "Apple sample source code" after having made changes. If you're going to re-distribute the source, we require that you make it clear in the source that the code was descended from Apple sample source code, but that you've made changes. Change History (most recent first): 08/2000 JM Carbonized, non-Carbon code is commented out for demonstration purposes. 7/14/1999 KG Updated for Metrowerks Codewarror Pro 2.1 */#include "CarbonPrefix.h"#include <Dialogs.h>#include <Fonts.h>#include <Processes.h>#include <Sound.h>#include <Gestalt.h>#define BIT00 0x01#define BIT01 0x02#define BIT02 0x04#define BIT03 0x08#define BIT04 0x10#define BIT05 0x20#define BIT06 0x40#define BIT07 0x80void rotate();BitMap *macBitMap;void rotate(){ Ptr srcPtr, destPtr, destColPtr, myBaseAddr; BitMap *newBitmap; short destRowBytes, bitchar, srcByte, srcH, srcV, srccols, srcrows, i; Rect destRect; /* rotate boundary rectangle */ srcH = macBitMap->bounds.right - macBitMap->bounds.left; srcV = macBitMap->bounds.bottom - macBitMap->bounds.top; SetRect(&destRect, macBitMap->bounds.left, macBitMap->bounds.top, macBitMap->bounds.left+srcV, macBitMap->bounds.top+srcH); /* allocate destination buffer */ destRowBytes = (srcV+7) >> 3; newBitmap = (BitMap *) NewPtrClear(sizeof(BitMap)); myBaseAddr = (Ptr) NewPtrClear(destRowBytes*srcH); /* set-up src to rotated destination scan */ srccols = macBitMap->rowBytes; srcrows = srcV; srcPtr = macBitMap->baseAddr; bitchar = BIT00; destColPtr= myBaseAddr + destRowBytes - 1; destPtr = destColPtr; /* scan src row and rotate into dest col */ while (srcrows-- > 0) { for (i=0; i<srccols; i++) { srcByte = *(srcPtr++); if (srcByte & BIT07) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT06) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT05) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT04) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT03) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT02) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT01) *destPtr |= bitchar; destPtr += destRowBytes; if (srcByte & BIT00) *destPtr |= bitchar; destPtr += destRowBytes; } if (bitchar==BIT07) { bitchar = BIT00; destColPtr--; } else { bitchar <<= 1; } destPtr = destColPtr; } /* remove src bitmap (portbits for offscreen port) */ DisposePtr((Ptr)macBitMap->baseAddr); DisposePtr((Ptr)macBitMap); /* store new src in object */ macBitMap = (BitMap *)newBitmap; macBitMap->baseAddr = (Ptr) myBaseAddr; macBitMap->rowBytes = destRowBytes; macBitMap->bounds = destRect;}void main(){ WindowPtr mainWinPtr; OSErr error; //SysEnvRec theWorld; //not available in carbon long result; //used to check QD Version Rect windRect, ovalRect, myBounds; short myRowBytes; RgnHandle rgnHandle = NewRgn(); /* Make sure ColorQD exists. */ /*error = SysEnvirons(1, &theWorld); if (theWorld.hasColorQD == false) { SysBeep(50); ExitToShell(); }*/ error = Gestalt(gestaltQuickdrawVersion, &result); if (error != noErr || result < gestalt8BitQD) { SysBeep(50); ExitToShell(); } /* Initialize all the needed managers. */ /*InitGraf(&qd.thePort); InitFonts(); InitWindows(); InitMenus(); TEInit(); InitDialogs(nil);*/ InitCursor(); /* Define output window with an inset clip region. */ SetRect(&windRect, 100, 100, 404, 404); mainWinPtr = NewWindow(nil, &windRect, "\pJohn", true, documentProc, (WindowPtr) -1, false, 0); //SetPort(mainWinPtr); SetPortWindowPort( mainWinPtr ); SetRect(&windRect, 0, 0, 304, 304); EraseRect(&windRect); SetRect(&ovalRect, 15, 15, 60, 120); PaintOval(&ovalRect); MoveTo(10,140); DrawString("\pHi there."); MoveTo(0,0); LineTo(303,303); MoveTo(0,303); LineTo(303,0); /* rotate boundary rectangle */ myBounds = windRect; myRowBytes = (myBounds.right - myBounds.left + 7) >> 3; macBitMap = (BitMap *) NewPtrClear(sizeof(BitMap)); macBitMap->baseAddr = (Ptr) NewPtrClear(myRowBytes * (myBounds.bottom - myBounds.top)); macBitMap->bounds = myBounds; macBitMap->rowBytes = myRowBytes; //CopyBits(&(*mainWinPtr).portBits, macBitMap, &windRect, &macBitMap->bounds, 0, nil); CopyBits(GetPortBitMapForCopyBits(GetWindowPort(mainWinPtr)), macBitMap, &windRect, &macBitMap->bounds, 0, nil); QDFlushPortBuffer(GetWindowPort(mainWinPtr), GetPortVisibleRegion(GetWindowPort(mainWinPtr), rgnHandle)); /* Wait until user clicks button. */ do { } while (!Button()); rotate(); //CopyBits(macBitMap, &(*mainWinPtr).portBits, &macBitMap->bounds, &windRect, 0, nil); CopyBits(macBitMap, GetPortBitMapForCopyBits(GetWindowPort(mainWinPtr)), &windRect, &macBitMap->bounds, 0, nil); QDFlushPortBuffer(GetWindowPort(mainWinPtr), GetPortVisibleRegion(GetWindowPort(mainWinPtr), rgnHandle)); /* Wait for button to be up */ do { } while (Button()); /* Wait until user clicks button. */ do { } while (!Button()); DisposeRgn(rgnHandle);}</pre>
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