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<div class="title">src/core/src/NIDeviceOrientation.m</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
<a name="l00002"></a>00002 <span class="comment">// Copyright 2011 Jeff Verkoeyen</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Forked from Three20 June 10, 2011 - Copyright 2009-2011 Facebook</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00007"></a>00007 <span class="comment">// you may not use this file except in compliance with the License.</span>
<a name="l00008"></a>00008 <span class="comment">// You may obtain a copy of the License at</span>
<a name="l00009"></a>00009 <span class="comment">//</span>
<a name="l00010"></a>00010 <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00011"></a>00011 <span class="comment">//</span>
<a name="l00012"></a>00012 <span class="comment">// Unless required by applicable law or agreed to in writing, software</span>
<a name="l00013"></a>00013 <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00014"></a>00014 <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00015"></a>00015 <span class="comment">// See the License for the specific language governing permissions and</span>
<a name="l00016"></a>00016 <span class="comment">// limitations under the License.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#import "NIDeviceOrientation.h"</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#import <QuartzCore/QuartzCore.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#import "NIDebuggingTools.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#import "NISDKAvailability.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026
<a name="l00028"></a><a class="code" href="group___device-_orientation.html#gad11b7958206db7c5d5a85d78f6d5ce4b">00028</a> BOOL <a class="code" href="group___device-_orientation.html#gad11b7958206db7c5d5a85d78f6d5ce4b" title="For use in shouldAutorotateToInterfaceOrientation:">NIIsSupportedOrientation</a>(UIInterfaceOrientation orientation) {
<a name="l00029"></a>00029 <span class="keywordflow">if</span> (<a class="code" href="group___s_d_k-_availability.html#ga7c693df0e5edd930db9d711852561eb4" title="Checks whether the device the app is currently running on is an iPad or not.">NIIsPad</a>()) {
<a name="l00030"></a>00030 <span class="keywordflow">return</span> YES;
<a name="l00031"></a>00031
<a name="l00032"></a>00032 } <span class="keywordflow">else</span> {
<a name="l00033"></a>00033 <span class="keywordflow">switch</span> (orientation) {
<a name="l00034"></a>00034 <span class="keywordflow">case</span> UIInterfaceOrientationPortrait:
<a name="l00035"></a>00035 <span class="keywordflow">case</span> UIInterfaceOrientationLandscapeLeft:
<a name="l00036"></a>00036 <span class="keywordflow">case</span> UIInterfaceOrientationLandscapeRight:
<a name="l00037"></a>00037 <span class="keywordflow">return</span> YES;
<a name="l00038"></a>00038 <span class="keywordflow">default</span>:
<a name="l00039"></a>00039 <span class="keywordflow">return</span> NO;
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044
<a name="l00046"></a><a class="code" href="group___device-_orientation.html#ga350d238bb40115bab71c59aab4d74958">00046</a> UIInterfaceOrientation <a class="code" href="group___device-_orientation.html#ga350d238bb40115bab71c59aab4d74958" title="Returns the application's current interface orientation.">NIInterfaceOrientation</a>(<span class="keywordtype">void</span>) {
<a name="l00047"></a>00047 UIInterfaceOrientation orient = [UIApplication sharedApplication].statusBarOrientation;
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="comment">// This code used to use the navigator to find the currently visible view controller and</span>
<a name="l00050"></a>00050 <span class="comment">// fall back to checking its orientation if we didn't know the status bar's orientation.</span>
<a name="l00051"></a>00051 <span class="comment">// It's unclear when this was actually necessary, though, so this assertion is here to try</span>
<a name="l00052"></a>00052 <span class="comment">// to find that case. If this assertion fails then the repro case needs to be analyzed and</span>
<a name="l00053"></a>00053 <span class="comment">// this method made more robust to handle that case.</span>
<a name="l00054"></a>00054 NIDASSERT(UIDeviceOrientationUnknown != orient);
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keywordflow">return</span> orient;
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a>00059
<a name="l00061"></a><a class="code" href="group___device-_orientation.html#gaa4aabcd2523c4c39e7981778de04fa87">00061</a> CGAffineTransform <a class="code" href="group___device-_orientation.html#gaa4aabcd2523c4c39e7981778de04fa87" title="Creates an affine transform for the given device orientation.">NIRotateTransformForOrientation</a>(UIInterfaceOrientation orientation) {
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (orientation == UIInterfaceOrientationLandscapeLeft) {
<a name="l00063"></a>00063 <span class="keywordflow">return</span> CGAffineTransformMakeRotation((CGFloat)(M_PI * 1.5));
<a name="l00064"></a>00064
<a name="l00065"></a>00065 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (orientation == UIInterfaceOrientationLandscapeRight) {
<a name="l00066"></a>00066 <span class="keywordflow">return</span> CGAffineTransformMakeRotation((CGFloat)(M_PI / 2.0));
<a name="l00067"></a>00067
<a name="l00068"></a>00068 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (orientation == UIInterfaceOrientationPortraitUpsideDown) {
<a name="l00069"></a>00069 <span class="keywordflow">return</span> CGAffineTransformMakeRotation((CGFloat)(-M_PI));
<a name="l00070"></a>00070
<a name="l00071"></a>00071 } <span class="keywordflow">else</span> {
<a name="l00072"></a>00072 <span class="keywordflow">return</span> CGAffineTransformIdentity;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 }
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