submodule/skia/tools/sk_app/ios/Window_ios.mm

   1 /*
   2 * Copyright 2017 Google Inc.
   3 *
   4 * Use of this source code is governed by a BSD-style license that can be
   5 * found in the LICENSE file.
   6 */
   7
   8 #include "tools/sk_app/ios/WindowContextFactory_ios.h"
   9 #include "tools/sk_app/ios/Window_ios.h"
  10
  11 #if __has_feature(objc_arc)
  12 #error "File should not be compiled with ARC."
  13 #endif
  14
  15 @interface WindowViewController : UIViewController
  16
  17 - (WindowViewController*)initWithWindow:(sk_app::Window_ios*)initWindow;
  18
  19 @end
  20
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 using sk_app::Window;
  24
  25 namespace sk_app {
  26
  27 Window_ios* Window_ios::gWindow = nullptr;
  28
  29 Window* Window::CreateNativeWindow(void*) {
  30     // already have a window
  31     if (Window_ios::MainWindow()) {
  32         return nullptr;
  33     }
  34
  35     Window_ios* window = new Window_ios();
  36     if (!window->initWindow()) {
  37         delete window;
  38         return nullptr;
  39     }
  40
  41     return window;
  42 }
  43
  44 bool Window_ios::initWindow() {
  45     // we already have a window
  46     if (fWindow) {
  47         return true;
  48     }
  49
  50     // Create a view controller to track certain events
  51     WindowViewController* viewController = [[WindowViewController alloc] initWithWindow:this];
  52     if (nil == viewController) {
  53         return false;
  54     }
  55
  56     fWindow = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  57     if (nil == fWindow) {
  58         [viewController release];
  59         return false;
  60     }
  61     fWindow.backgroundColor = [UIColor whiteColor];
  62
  63     viewController.view = nil;
  64     [fWindow setRootViewController:viewController];
  65     [fWindow makeKeyAndVisible];
  66
  67     gWindow = this;
  68
  69     return true;
  70 }
  71
  72 void Window_ios::closeWindow() {
  73     if (nil != fWindow) {
  74         gWindow = nullptr;
  75         [fWindow release];
  76         fWindow = nil;
  77     }
  78 }
  79
  80 bool Window_ios::attach(BackendType attachType) {
  81     this->initWindow();
  82
  83     window_context_factory::IOSWindowInfo info;
  84     info.fWindow = this;
  85     info.fViewController = fWindow.rootViewController;
  86     switch (attachType) {
  87 #ifdef SK_METAL
  88         case kMetal_BackendType:
  89             fWindowContext = MakeMetalForIOS(info, fRequestedDisplayParams);
  90             break;
  91 #endif
  92 #ifdef SK_GL
  93         case kNativeGL_BackendType:
  94             fWindowContext = MakeGLForIOS(info, fRequestedDisplayParams);
  95             break;
  96         case kRaster_BackendType:
  97             fWindowContext = MakeRasterForIOS(info, fRequestedDisplayParams);
  98             break;
  99 #endif
 100         default:
 101             SkASSERT_RELEASE(false);
 102     }
 103     this->onBackendCreated();
 104
 105     return (SkToBool(fWindowContext));
 106 }
 107
 108 void Window_ios::PaintWindow() {
 109     gWindow->onPaint();
 110 }
 111
 112 void Window_ios::onInval() {
 113     // TODO: send expose event
 114 }
 115
 116 }   // namespace sk_app
 117
 118 ///////////////////////////////////////////////////////////////////////////////
 119
 120 @implementation WindowViewController {
 121     sk_app::Window_ios* fWindow;
 122 }
 123
 124 - (WindowViewController*)initWithWindow:(sk_app::Window_ios *)initWindow {
 125     self = [super initWithNibName:nil bundle:nil];
 126     if (self) {
 127         fWindow = initWindow;
 128     }
 129     return self;
 130 }
 131
 132 - (void)viewDidLoad {
 133     // nothing yet
 134 }
 135
 136 - (void)didReceiveMemoryWarning {
 137     // nothing yet
 138 }
 139
 140 - (void)viewWillTransitionToSize:(CGSize)size
 141        withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator {
 142     // handle rotations here
 143 }
 144 @end
 145
 146 ///////////////////////////////////////////////////////////////////////////////
 147
 148 @implementation MainView {
 149     sk_app::Window_ios* fWindow;
 150 }
 151
 152 - (void)panGestureAction:(UIGestureRecognizer*)sender {
 153     CGPoint location = [sender locationInView:self];
 154     switch (sender.state) {
 155         case UIGestureRecognizerStateBegan:
 156             fWindow->onMouse(location.x, location.y,
 157                              skui::InputState::kDown, skui::ModifierKey::kNone);
 158             break;
 159         case UIGestureRecognizerStateChanged:
 160             fWindow->onMouse(location.x, location.y,
 161                              skui::InputState::kMove, skui::ModifierKey::kNone);
 162             break;
 163         case UIGestureRecognizerStateEnded:
 164             fWindow->onMouse(location.x, location.y,
 165                              skui::InputState::kUp, skui::ModifierKey::kNone);
 166             break;
 167         case UIGestureRecognizerStateCancelled:
 168             fWindow->onMouse(location.x, location.y,
 169                              skui::InputState::kUp, skui::ModifierKey::kNone);
 170             break;
 171         default:
 172             break;
 173     }
 174 }
 175
 176 - (void)tapGestureAction:(UIGestureRecognizer*)sender {
 177     CGPoint location = [sender locationInView:self];
 178     switch (sender.state) {
 179         case UIGestureRecognizerStateEnded:
 180             fWindow->onMouse(location.x, location.y,
 181                              skui::InputState::kDown, skui::ModifierKey::kNone);
 182             fWindow->onMouse(location.x, location.y,
 183                              skui::InputState::kUp, skui::ModifierKey::kNone);
 184             break;
 185         default:
 186             break;
 187     }
 188 }
 189
 190 - (void)pinchGestureAction:(UIGestureRecognizer*)sender {
 191     CGPoint location = [sender locationInView:self];
 192     UIPinchGestureRecognizer* pinchGestureRecognizer = (UIPinchGestureRecognizer*) sender;
 193     float scale = pinchGestureRecognizer.scale;
 194     switch (sender.state) {
 195         case UIGestureRecognizerStateBegan:
 196             fWindow->onPinch(skui::InputState::kDown, scale, location.x, location.y);
 197             break;
 198         case UIGestureRecognizerStateChanged:
 199             fWindow->onPinch(skui::InputState::kMove, scale, location.x, location.y);
 200             break;
 201         case UIGestureRecognizerStateEnded:
 202             fWindow->onPinch(skui::InputState::kUp, scale, location.x, location.y);
 203             break;
 204         case UIGestureRecognizerStateCancelled:
 205             fWindow->onPinch(skui::InputState::kUp, scale, location.x, location.y);
 206             break;
 207         default:
 208             break;
 209     }
 210 }
 211
 212 - (void)swipeRightGestureAction:(UIGestureRecognizer*)sender {
 213     if (UIGestureRecognizerStateEnded == sender.state) {
 214         fWindow->onFling(skui::InputState::kRight);
 215     }
 216 }
 217
 218 - (void)swipeLeftGestureAction:(UIGestureRecognizer*)sender {
 219     if (UIGestureRecognizerStateEnded == sender.state) {
 220         fWindow->onFling(skui::InputState::kLeft);
 221     }
 222 }
 223
 224 - (MainView*)initWithWindow:(sk_app::Window_ios *)initWindow {
 225     self = [super init];
 226
 227     UIPanGestureRecognizer* panGestureRecognizer = [[UIPanGestureRecognizer alloc] init];
 228     panGestureRecognizer.maximumNumberOfTouches = 1;
 229     [panGestureRecognizer addTarget:self action:@selector(panGestureAction:)];
 230     [self addGestureRecognizer:panGestureRecognizer];
 231
 232     UITapGestureRecognizer* tapGestureRecognizer = [[UITapGestureRecognizer alloc] init];
 233     [tapGestureRecognizer addTarget:self action:@selector(tapGestureAction:)];
 234     [self addGestureRecognizer:tapGestureRecognizer];
 235
 236     UIPinchGestureRecognizer* pinchGestureRecognizer = [[UIPinchGestureRecognizer alloc] init];
 237     [pinchGestureRecognizer addTarget:self action:@selector(pinchGestureAction:)];
 238     [self addGestureRecognizer:pinchGestureRecognizer];
 239
 240     UISwipeGestureRecognizer* swipeRightGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
 241     swipeRightGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
 242     [swipeRightGestureRecognizer addTarget:self action:@selector(swipeRightGestureAction:)];
 243     [self addGestureRecognizer:swipeRightGestureRecognizer];
 244
 245     UISwipeGestureRecognizer* swipeLeftGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
 246     swipeLeftGestureRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
 247     [swipeLeftGestureRecognizer addTarget:self action:@selector(swipeLeftGestureAction:)];
 248     [self addGestureRecognizer:swipeLeftGestureRecognizer];
 249
 250     // disable pan recognition until swipes fail
 251     [panGestureRecognizer requireGestureRecognizerToFail:swipeLeftGestureRecognizer];
 252     [panGestureRecognizer requireGestureRecognizerToFail:swipeRightGestureRecognizer];
 253
 254     fWindow = initWindow;
 255
 256     return self;
 257 }
 258
 259 @end
 260