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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #if !defined(__has_feature) || !__has_feature(objc_arc)
      6 #error "This file requires ARC support."
      7 #endif
      8 
      9 #import "Utility.h"
     10 
     11 @implementation Utility
     12 
     13 + (BOOL)isPad {
     14   return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad);
     15 }
     16 
     17 + (BOOL)isInLandscapeMode {
     18   UIInterfaceOrientation orientation =
     19       [UIApplication sharedApplication].statusBarOrientation;
     20 
     21   if ((orientation == UIInterfaceOrientationLandscapeLeft) ||
     22       (orientation == UIInterfaceOrientationLandscapeRight)) {
     23     return YES;
     24   }
     25   return NO;
     26 }
     27 
     28 + (CGSize)getOrientatedSize:(CGSize)size
     29     shouldWidthBeLongestSide:(BOOL)shouldWidthBeLongestSide {
     30   if (shouldWidthBeLongestSide && (size.height > size.width)) {
     31     return CGSizeMake(size.height, size.width);
     32   }
     33   return size;
     34 }
     35 
     36 + (void)showAlert:(NSString*)title message:(NSString*)message {
     37   UIAlertView* alert;
     38   alert = [[UIAlertView alloc] init];
     39   alert.title = title;
     40   alert.message = message;
     41   alert.delegate = nil;
     42   [alert addButtonWithTitle:@"OK"];
     43   [alert show];
     44 }
     45 
     46 + (NSString*)appVersionNumberDisplayString {
     47   NSDictionary* infoDictionary = [[NSBundle mainBundle] infoDictionary];
     48 
     49   NSString* majorVersion =
     50       [infoDictionary objectForKey:@"CFBundleShortVersionString"];
     51   NSString* minorVersion = [infoDictionary objectForKey:@"CFBundleVersion"];
     52 
     53   return [NSString
     54       stringWithFormat:@"Version %@ (%@)", majorVersion, minorVersion];
     55 }
     56 
     57 + (void)bindTextureForIOS:(GLuint)glName {
     58   glBindTexture(GL_TEXTURE_2D, glName);
     59   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     60   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     61   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
     62   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
     63 }
     64 
     65 + (void)logGLErrorCode:(NSString*)funcName {
     66   GLenum errorCode = 1;
     67 
     68   while (errorCode != 0) {
     69     errorCode = glGetError();  // I don't know why this is returning an error
     70                                // on the first call to this function, but if I
     71                                // don't read it, then stuff doesn't work...
     72 #if DEBUG
     73     if (errorCode != 0) {
     74       NSLog(@"glerror in %@: %X", funcName, errorCode);
     75     }
     76 #endif  // DEBUG
     77   }
     78 }
     79 
     80 + (void)drawSubRectToGLFromRectOfSize:(const webrtc::DesktopSize&)rectSize
     81                               subRect:(const webrtc::DesktopRect&)subRect
     82                                  data:(const uint8_t*)data {
     83   DCHECK(rectSize.width() >= subRect.width());
     84   DCHECK(rectSize.height() >= subRect.height());
     85   DCHECK(rectSize.width() >= (subRect.left() + subRect.width()));
     86   DCHECK(rectSize.height() >= (subRect.top() + subRect.height()));
     87   DCHECK(data);
     88 
     89   glTexSubImage2D(GL_TEXTURE_2D,
     90                   0,
     91                   subRect.left(),
     92                   subRect.top(),
     93                   subRect.width(),
     94                   subRect.height(),
     95                   GL_RGBA,
     96                   GL_UNSIGNED_BYTE,
     97                   data);
     98 }
     99 
    100 + (void)moveMouse:(HostProxy*)controller
    101                at:(const webrtc::DesktopVector&)point {
    102   [controller mouseAction:point
    103                wheelDelta:webrtc::DesktopVector(0, 0)
    104               whichButton:0
    105                buttonDown:NO];
    106 }
    107 
    108 + (void)leftClickOn:(HostProxy*)controller
    109                  at:(const webrtc::DesktopVector&)point {
    110   [controller mouseAction:point
    111                wheelDelta:webrtc::DesktopVector(0, 0)
    112               whichButton:1
    113                buttonDown:YES];
    114   [controller mouseAction:point
    115                wheelDelta:webrtc::DesktopVector(0, 0)
    116               whichButton:1
    117                buttonDown:NO];
    118 }
    119 
    120 + (void)middleClickOn:(HostProxy*)controller
    121                    at:(const webrtc::DesktopVector&)point {
    122   [controller mouseAction:point
    123                wheelDelta:webrtc::DesktopVector(0, 0)
    124               whichButton:2
    125                buttonDown:YES];
    126   [controller mouseAction:point
    127                wheelDelta:webrtc::DesktopVector(0, 0)
    128               whichButton:2
    129                buttonDown:NO];
    130 }
    131 
    132 + (void)rightClickOn:(HostProxy*)controller
    133                   at:(const webrtc::DesktopVector&)point {
    134   [controller mouseAction:point
    135                wheelDelta:webrtc::DesktopVector(0, 0)
    136               whichButton:3
    137                buttonDown:YES];
    138   [controller mouseAction:point
    139                wheelDelta:webrtc::DesktopVector(0, 0)
    140               whichButton:3
    141                buttonDown:NO];
    142 }
    143 
    144 + (void)mouseScroll:(HostProxy*)controller
    145                  at:(const webrtc::DesktopVector&)point
    146               delta:(const webrtc::DesktopVector&)delta {
    147   [controller mouseAction:point wheelDelta:delta whichButton:0 buttonDown:NO];
    148 }
    149 
    150 @end