src/video/uikit/SDL_uikitviewcontroller.m
author Sam Lantinga <slouken@libsdl.org>
Sun, 23 Sep 2012 17:01:58 -0700
changeset 6452 1895319021e4
parent 6451 52e5a05ca795
child 6453 f71e3fdba072
permissions -rwxr-xr-x
Added UIInterfaceOrientationMask for building with older iOS SDKs

/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"

#if SDL_VIDEO_DRIVER_UIKIT

#include "SDL_video.h"
#include "SDL_assert.h"
#include "SDL_hints.h"
#include "../SDL_sysvideo.h"
#include "../../events/SDL_events_c.h"

#include "SDL_uikitwindow.h"
#include "SDL_uikitviewcontroller.h"
#include "SDL_uikitvideo.h"

#ifndef __IPHONE_6_0
// This enum isn't available in older SDKs, but we use it for our own purposes on iOS 5.1 and for the system on iOS 6.0
enum UIInterfaceOrientationMask) {
    UIInterfaceOrientationMaskPortrait = (1 << UIInterfaceOrientationPortrait),
    UIInterfaceOrientationMaskLandscapeLeft = (1 << UIInterfaceOrientationLandscapeLeft),
    UIInterfaceOrientationMaskLandscapeRight = (1 << UIInterfaceOrientationLandscapeRight),
    UIInterfaceOrientationMaskPortraitUpsideDown = (1 << UIInterfaceOrientationPortraitUpsideDown),
    UIInterfaceOrientationMaskLandscape = (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
    UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown),
    UIInterfaceOrientationMaskAllButUpsideDown = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
};
#endif // !__IPHONE_6_0

    
@implementation SDL_uikitviewcontroller

@synthesize window;

- (id)initWithSDLWindow:(SDL_Window *)_window
{
    self = [self init];
    if (self == nil) {
        return nil;
    }
    self.window = _window;

    return self;
}

- (void)loadView
{
    // do nothing.
}

- (void)viewDidLayoutSubviews
{
    if (self->window->flags & SDL_WINDOW_RESIZABLE) {
        SDL_WindowData *data = self->window->driverdata;
        SDL_VideoDisplay *display = SDL_GetDisplayForWindow(self->window);
        SDL_DisplayModeData *displaymodedata = (SDL_DisplayModeData *) display->current_mode.driverdata;
        const CGSize size = data->view.bounds.size;
        int w, h;
        
        w = (int)(size.width * displaymodedata->scale);
        h = (int)(size.height * displaymodedata->scale);
        
        SDL_SendWindowEvent(self->window, SDL_WINDOWEVENT_RESIZED, w, h);
    }
}

- (NSUInteger)supportedInterfaceOrientations
{
    NSUInteger orientationMask = 0;
    
    const char *orientationsCString;
    if ((orientationsCString = SDL_GetHint(SDL_HINT_ORIENTATIONS)) != NULL) {
        BOOL rotate = NO;
        NSString *orientationsNSString = [NSString stringWithCString:orientationsCString
                                                            encoding:NSUTF8StringEncoding];
        NSArray *orientations = [orientationsNSString componentsSeparatedByCharactersInSet:
                                 [NSCharacterSet characterSetWithCharactersInString:@" "]];
        
        if ([orientations containsObject:@"LandscapeLeft"]) {
            orientationMask |= UIInterfaceOrientationMaskLandscapeLeft;
        }
        if ([orientations containsObject:@"LandscapeRight"]) {
            orientationMask |= UIInterfaceOrientationMaskLandscapeRight;
        }
        if ([orientations containsObject:@"Portrait"]) {
            orientationMask |= UIInterfaceOrientationMaskPortrait;
        }
        if ([orientations containsObject:@"PortraitUpsideDown"]) {
            orientationMask |= UIInterfaceOrientationMaskPortraitUpsideDown;
        }
        
    } else if (self->window->flags & SDL_WINDOW_RESIZABLE) {
        orientationMask = UIInterfaceOrientationMaskAll;  // any orientation is okay.
    } else {
        if (self->window->w >= self->window->h) {
            orientationMask |= UIInterfaceOrientationMaskLandscape;
        }
        if (self->window->h >= self->window->w) {
            orientationMask |= (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown);
        }
    }
    
    // Don't allow upside-down orientation on the phone, so answering calls is in the natural orientation
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        orientationMask &= ~UIInterfaceOrientationMaskPortraitUpsideDown;
    }
    return orientationMask;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orient
{
    NSUInteger orientationMask = [self supportedInterfaceOrientations];
    return (orientationMask & (1 << orient));
}

@end

#endif /* SDL_VIDEO_DRIVER_UIKIT */

/* vi: set ts=4 sw=4 expandtab: */