main_ios.mm

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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
 
#include "include/core/SkTypes.h"
#include "tools/sk_app/Application.h"
#include "tools/sk_app/ios/Window_ios.h"
 
#import <QuartzCore/QuartzCore.h>
#import <UIKit/UIKit.h>
 
#if __has_feature(objc_arc)
#error "File should not be compiled with ARC."
#endif
 
namespace {
 
static int gArgc;
static char** gArgv;
 
}
 
////////////////////////////////////////////////////////////////////
 
@interface AppDelegate : UIResponder<UIApplicationDelegate>
 
@end
 
@implementation AppDelegate {
    CADisplayLink* fDisplayLink; // Owned by the run loop.
    std::unique_ptr<sk_app::Application> fApp;
}
 
#pragma mark - UIApplicationDelegate
 
- (void)applicationWillResignActive:(UIApplication *)sender {
    sk_app::Window_ios* mainWindow = sk_app::Window_ios::MainWindow();
    if (mainWindow) {
        mainWindow->onActivate(false);
    }
}
 
- (void)applicationDidBecomeActive:(UIApplication *)sender {
    sk_app::Window_ios* mainWindow = sk_app::Window_ios::MainWindow();
    if (mainWindow) {
        mainWindow->onActivate(true);
    }
}
 
- (void)applicationWillTerminate:(UIApplication *)sender {
    // Display link retains us, so we break the cycle now.
    // Note: dealloc is never called.
    [fDisplayLink invalidate];
    fDisplayLink = nil;
    fApp.reset();
}
 
- (BOOL)application:(UIApplication *)application
        didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    fApp = std::unique_ptr<sk_app::Application>(sk_app::Application::Create(gArgc, gArgv, nullptr));
 
    auto mainWindow = sk_app::Window_ios::MainWindow();
    mainWindow->onActivate(application.applicationState == UIApplicationStateActive);
 
    fDisplayLink = [CADisplayLink displayLinkWithTarget:self
                                               selector:@selector(displayLinkFired)];
    [fDisplayLink addToRunLoop:NSRunLoop.mainRunLoop forMode:NSRunLoopCommonModes];
 
    return YES;
}
 
- (void)displayLinkFired {
    // TODO: Hook into CAMetalLayer's drawing event loop or our own run loop observer.
    // Need to handle animated slides/redraw mode, so we need something that will wake up the
    // run loop.
    sk_app::Window_ios::PaintWindow();
 
    fApp->onIdle();
}
 
@end
 
///////////////////////////////////////////////////////////////////
 
int main(int argc, char **argv) {
    gArgc = argc;
    gArgv = argv;
    return UIApplicationMain(argc, argv, nil, @"AppDelegate");
}