SDL_uikitview.m
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 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_internal.h"
#if SDL_VIDEO_DRIVER_UIKIT
#include "SDL_uikitview.h"
#include "SDL_hints.h"
#include "../../events/SDL_mouse_c.h"
#include "../../events/SDL_touch_c.h"
#include "../../events/SDL_events_c.h"
#import "SDL_uikitappdelegate.h"
#import "SDL_uikitmodes.h"
#import "SDL_uikitwindow.h"
/* This is defined in SDL_sysjoystick.m */
extern int SDL_AppleTVRemoteOpenedAsJoystick;
@implementation SDL_uikitview {
SDL_Window *sdlwindow;
SDL_TouchID touchId;
UITouch * __weak firstFingerDown;
}
- (instancetype)initWithFrame:(CGRect)frame
{
if ((self = [super initWithFrame:frame])) {
#if TARGET_OS_TV
/* Apple TV Remote touchpad swipe gestures. */
UISwipeGestureRecognizer *swipeUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
swipeUp.direction = UISwipeGestureRecognizerDirectionUp;
[self addGestureRecognizer:swipeUp];
UISwipeGestureRecognizer *swipeDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
swipeDown.direction = UISwipeGestureRecognizerDirectionDown;
[self addGestureRecognizer:swipeDown];
UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[self addGestureRecognizer:swipeLeft];
UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
[self addGestureRecognizer:swipeRight];
#endif
self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.autoresizesSubviews = YES;
#if !TARGET_OS_TV
self.multipleTouchEnabled = YES;
#endif
touchId = 1;
SDL_AddTouch(touchId, "");
}
return self;
}
- (void)setSDLWindow:(SDL_Window *)window
{
SDL_WindowData *data = nil;
if (window == sdlwindow) {
return;
}
/* Remove ourself from the old window. */
if (sdlwindow) {
SDL_uikitview *view = nil;
data = (__bridge SDL_WindowData *) sdlwindow->driverdata;
[data.views removeObject:self];
[self removeFromSuperview];
/* Restore the next-oldest view in the old window. */
view = data.views.lastObject;
data.viewcontroller.view = view;
data.uiwindow.rootViewController = nil;
data.uiwindow.rootViewController = data.viewcontroller;
[data.uiwindow layoutIfNeeded];
}
/* Add ourself to the new window. */
if (window) {
data = (__bridge SDL_WindowData *) window->driverdata;
/* Make sure the SDL window has a strong reference to this view. */
[data.views addObject:self];
/* Replace the view controller's old view with this one. */
[data.viewcontroller.view removeFromSuperview];
data.viewcontroller.view = self;
/* The root view controller handles rotation and the status bar.
* Assigning it also adds the controller's view to the window. We
* explicitly re-set it to make sure the view is properly attached to
* the window. Just adding the sub-view if the root view controller is
* already correct causes orientation issues on iOS 7 and below. */
data.uiwindow.rootViewController = nil;
data.uiwindow.rootViewController = data.viewcontroller;
/* The view's bounds may not be correct until the next event cycle. That
* might happen after the current dimensions are queried, so we force a
* layout now to immediately update the bounds. */
[data.uiwindow layoutIfNeeded];
}
sdlwindow = window;
}
- (CGPoint)touchLocation:(UITouch *)touch shouldNormalize:(BOOL)normalize
{
CGPoint point = [touch locationInView:self];
if (normalize) {
CGRect bounds = self.bounds;
point.x /= bounds.size.width;
point.y /= bounds.size.height;
}
return point;
}
- (float)pressureForTouch:(UITouch *)touch
{
#ifdef __IPHONE_9_0
if ([touch respondsToSelector:@selector(force)]) {
return (float) touch.force;
}
#endif
return 1.0f;
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
float pressure = [self pressureForTouch:touch];
if (!firstFingerDown) {
CGPoint locationInView = [self touchLocation:touch shouldNormalize:NO];
int clicks = (int) touch.tapCount;
/* send mouse moved event */
SDL_SendMouseMotion(sdlwindow, SDL_TOUCH_MOUSEID, 0, locationInView.x, locationInView.y);
/* send mouse down event */
SDL_SendMouseButtonClicks(sdlwindow, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT, clicks);
firstFingerDown = touch;
}
CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
SDL_SendTouch(touchId, (SDL_FingerID)((size_t)touch),
SDL_TRUE, locationInView.x, locationInView.y, pressure);
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
float pressure = [self pressureForTouch:touch];
if (touch == firstFingerDown) {
/* send mouse up */
int clicks = (int) touch.tapCount;
SDL_SendMouseButtonClicks(sdlwindow, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT, clicks);
firstFingerDown = nil;
}
CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
SDL_SendTouch(touchId, (SDL_FingerID)((size_t)touch),
SDL_FALSE, locationInView.x, locationInView.y, pressure);
}
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
[self touchesEnded:touches withEvent:event];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
float pressure = [self pressureForTouch:touch];
if (touch == firstFingerDown) {
CGPoint locationInView = [self touchLocation:touch shouldNormalize:NO];
/* send moved event */
SDL_SendMouseMotion(sdlwindow, SDL_TOUCH_MOUSEID, 0, locationInView.x, locationInView.y);
}
CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
SDL_SendTouchMotion(touchId, (SDL_FingerID)((size_t)touch),
locationInView.x, locationInView.y, pressure);
}
}
#if TARGET_OS_TV || defined(__IPHONE_9_1)
- (SDL_Scancode)scancodeFromPressType:(UIPressType)presstype
{
switch (presstype) {
case UIPressTypeUpArrow:
return SDL_SCANCODE_UP;
case UIPressTypeDownArrow:
return SDL_SCANCODE_DOWN;
case UIPressTypeLeftArrow:
return SDL_SCANCODE_LEFT;
case UIPressTypeRightArrow:
return SDL_SCANCODE_RIGHT;
case UIPressTypeSelect:
/* HIG says: "primary button behavior" */
return SDL_SCANCODE_RETURN;
case UIPressTypeMenu:
/* HIG says: "returns to previous screen" */
return SDL_SCANCODE_ESCAPE;
case UIPressTypePlayPause:
/* HIG says: "secondary button behavior" */
return SDL_SCANCODE_PAUSE;
default:
return SDL_SCANCODE_UNKNOWN;
}
}
- (void)pressesBegan:(NSSet<UIPress *> *)presses withEvent:(UIPressesEvent *)event
{
if (!SDL_AppleTVRemoteOpenedAsJoystick) {
for (UIPress *press in presses) {
SDL_Scancode scancode = [self scancodeFromPressType:press.type];
SDL_SendKeyboardKey(SDL_PRESSED, scancode);
}
}
[super pressesBegan:presses withEvent:event];
}
- (void)pressesEnded:(NSSet<UIPress *> *)presses withEvent:(UIPressesEvent *)event
{
if (!SDL_AppleTVRemoteOpenedAsJoystick) {
for (UIPress *press in presses) {
SDL_Scancode scancode = [self scancodeFromPressType:press.type];
SDL_SendKeyboardKey(SDL_RELEASED, scancode);
}
}
[super pressesEnded:presses withEvent:event];
}
- (void)pressesCancelled:(NSSet<UIPress *> *)presses withEvent:(UIPressesEvent *)event
{
if (!SDL_AppleTVRemoteOpenedAsJoystick) {
for (UIPress *press in presses) {
SDL_Scancode scancode = [self scancodeFromPressType:press.type];
SDL_SendKeyboardKey(SDL_RELEASED, scancode);
}
}
[super pressesCancelled:presses withEvent:event];
}
- (void)pressesChanged:(NSSet<UIPress *> *)presses withEvent:(UIPressesEvent *)event
{
/* This is only called when the force of a press changes. */
[super pressesChanged:presses withEvent:event];
}
#endif /* TARGET_OS_TV || defined(__IPHONE_9_1) */
#if TARGET_OS_TV
-(void)swipeGesture:(UISwipeGestureRecognizer *)gesture
{
/* Swipe gestures don't trigger begin states. */
if (gesture.state == UIGestureRecognizerStateEnded) {
if (!SDL_AppleTVRemoteOpenedAsJoystick) {
/* Send arrow key presses for now, as we don't have an external API
* which better maps to swipe gestures. */
switch (gesture.direction) {
case UISwipeGestureRecognizerDirectionUp:
SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_UP);
SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_UP);
break;
case UISwipeGestureRecognizerDirectionDown:
SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_DOWN);
SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_DOWN);
break;
case UISwipeGestureRecognizerDirectionLeft:
SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_LEFT);
SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_LEFT);
break;
case UISwipeGestureRecognizerDirectionRight:
SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_RIGHT);
SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_RIGHT);
break;
}
}
}
}
#endif /* TARGET_OS_TV */
@end
#endif /* SDL_VIDEO_DRIVER_UIKIT */
/* vi: set ts=4 sw=4 expandtab: */
SDL_SCANCODE_RETURN
Definition: SDL_scancode.h:92
SDL_TRUE
Definition: SDL_stdinc.h:142
SDL_uikitappdelegate.h
SDL_SCANCODE_LEFT
Definition: SDL_scancode.h:177
SDL_FingerID
Sint64 SDL_FingerID
Definition: SDL_touch.h:42
SDL_FALSE
Definition: SDL_stdinc.h:141
SDL_SCANCODE_UP
Definition: SDL_scancode.h:179
SDL_WindowData::viewcontroller
SDL_uikitviewcontroller * viewcontroller
Definition: SDL_uikitwindow.h:47
SDL_SCANCODE_RIGHT
Definition: SDL_scancode.h:176
SDL_SendMouseButtonClicks
int SDL_SendMouseButtonClicks(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button, int clicks)
Definition: SDL_mouse.c:499
SDL_SendTouch
int SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid, SDL_bool down, float x, float y, float pressure)
Definition: SDL_touch.c:222
SDL_uikitwindow.h
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_TOUCH_MOUSEID
#define SDL_TOUCH_MOUSEID
Definition: SDL_touch.h:53
SDL_SendKeyboardKey
int SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
Definition: SDL_keyboard.c:679
SDL_SendTouchMotion
int SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid, float x, float y, float pressure)
Definition: SDL_touch.c:284
SDL_WindowData
Definition: SDL_androidwindow.h:35
SDL_WindowData::views
NSMutableArray * views
Definition: SDL_uikitwindow.h:50
SDL_SCANCODE_ESCAPE
Definition: SDL_scancode.h:93
SDL_SendMouseMotion
int SDL_SendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:237
SDL_BUTTON_LEFT
#define SDL_BUTTON_LEFT
Definition: SDL_mouse.h:282
SDL_SCANCODE_PAUSE
Definition: SDL_scancode.h:168
frame
int frame
Definition: teststreaming.c:60
SDL_hints.h
SDL_TouchID
Sint64 SDL_TouchID
Definition: SDL_touch.h:41
SDL_AddTouch
int SDL_AddTouch(SDL_TouchID touchID, const char *name)
Definition: SDL_touch.c:136
SDL_WindowData::uiwindow
UIWindow * uiwindow
Definition: SDL_uikitwindow.h:46
SDL_uikitview
Definition: SDL_uikitview.h:28
SDL_SCANCODE_UNKNOWN
Definition: SDL_scancode.h:45
SDL_uikitview.h
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
void
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
Definition: SDL_dynapi_procs.h:89
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_AppleTVRemoteOpenedAsJoystick
int SDL_AppleTVRemoteOpenedAsJoystick
Definition: SDL_sysjoystick.m:63
SDL_SCANCODE_DOWN
Definition: SDL_scancode.h:178
SDL_Window::driverdata
void * driverdata
Definition: SDL_sysvideo.h:111
SDL_PRESSED
#define SDL_PRESSED
Definition: SDL_events.h:50
SDL_RELEASED
#define SDL_RELEASED
Definition: SDL_events.h:49
SDL_uikitmodes.h
in
GLuint in
Definition: SDL_opengl_glext.h:7940
SDL_Scancode
SDL_Scancode
The SDL keyboard scancode representation.
Definition: SDL_scancode.h:43