src/video/uikit/SDL_uikitview.m
author Sam Lantinga <slouken@libsdl.org>
Sun, 02 Feb 2014 00:53:27 -0800
changeset 8149 681eb46b8ac4
parent 8093 b43765095a6f
child 8583 fb2933ca805f
permissions -rw-r--r--
Fixed bug 2374 - Update copyright for 2014...

Is it that time already??
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 /*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_UIKIT
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#include "SDL_uikitview.h"
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#include "../../events/SDL_keyboard_c.h"
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#include "../../events/SDL_mouse_c.h"
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#include "../../events/SDL_touch_c.h"
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#if SDL_IPHONE_KEYBOARD
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#include "keyinfotable.h"
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#endif
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#include "SDL_uikitappdelegate.h"
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#include "SDL_uikitmodes.h"
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#include "SDL_uikitwindow.h"
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void _uikit_keyboard_init() ;
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@implementation SDL_uikitview
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- (void)dealloc
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{
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    [super dealloc];
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}
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- (id)initWithFrame:(CGRect)frame
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{
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    self = [super initWithFrame: frame];
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#if SDL_IPHONE_KEYBOARD
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    [self initializeKeyboard];
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#endif
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    self.multipleTouchEnabled = YES;
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    touchId = 1;
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    SDL_AddTouch(touchId, "");
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    return self;
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}
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- (CGPoint)touchLocation:(UITouch *)touch shouldNormalize:(BOOL)normalize
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{
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    CGPoint point = [touch locationInView: self];
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    /* Get the display scale and apply that to the input coordinates */
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    SDL_Window *window = self->viewcontroller.window;
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    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
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    SDL_DisplayModeData *displaymodedata = (SDL_DisplayModeData *) display->current_mode.driverdata;
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    if (normalize) {
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        CGRect bounds = [self bounds];
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        point.x /= bounds.size.width;
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        point.y /= bounds.size.height;
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    } else {
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        point.x *= displaymodedata->scale;
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        point.y *= displaymodedata->scale;
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    }
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    return point;
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}
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- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
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{
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    NSEnumerator *enumerator = [touches objectEnumerator];
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    UITouch *touch = (UITouch*)[enumerator nextObject];
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    while (touch) {
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        if (!leftFingerDown) {
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            CGPoint locationInView = [self touchLocation:touch shouldNormalize:NO];
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            /* send moved event */
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            SDL_SendMouseMotion(NULL, SDL_TOUCH_MOUSEID, 0, locationInView.x, locationInView.y);
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            /* send mouse down event */
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            SDL_SendMouseButton(NULL, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
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            leftFingerDown = touch;
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        }
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        CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
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#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS
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        /* FIXME: TODO: Using touch as the fingerId is potentially dangerous
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         * It is also much more efficient than storing the UITouch pointer
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         * and comparing it to the incoming event.
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         */
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        SDL_SendTouch(touchId, (SDL_FingerID)((size_t)touch),
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                      SDL_TRUE, locationInView.x, locationInView.y, 1.0f);
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#else
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        int i;
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        for(i = 0; i < MAX_SIMULTANEOUS_TOUCHES; i++) {
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            if (finger[i] == NULL) {
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                finger[i] = touch;
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                SDL_SendTouch(touchId, i,
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                              SDL_TRUE, locationInView.x, locationInView.y, 1.0f);
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                break;
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            }
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        }
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#endif
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        touch = (UITouch*)[enumerator nextObject];
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    }
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}
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- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
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{
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    NSEnumerator *enumerator = [touches objectEnumerator];
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    UITouch *touch = (UITouch*)[enumerator nextObject];
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    while(touch) {
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        if (touch == leftFingerDown) {
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            /* send mouse up */
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            SDL_SendMouseButton(NULL, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
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            leftFingerDown = nil;
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        }
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        CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
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#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS
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        SDL_SendTouch(touchId, (long)touch,
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                      SDL_FALSE, locationInView.x, locationInView.y, 1.0f);
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#else
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        int i;
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        for (i = 0; i < MAX_SIMULTANEOUS_TOUCHES; i++) {
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            if (finger[i] == touch) {
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                SDL_SendTouch(touchId, i,
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                              SDL_FALSE, locationInView.x, locationInView.y, 1.0f);
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                finger[i] = NULL;
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                break;
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            }
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        }
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#endif
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        touch = (UITouch*)[enumerator nextObject];
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    }
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}
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- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
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{
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    /*
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        this can happen if the user puts more than 5 touches on the screen
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        at once, or perhaps in other circumstances.  Usually (it seems)
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        all active touches are canceled.
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    */
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    [self touchesEnded: touches withEvent: event];
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}
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- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
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{
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    NSEnumerator *enumerator = [touches objectEnumerator];
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    UITouch *touch = (UITouch*)[enumerator nextObject];
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    while (touch) {
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        if (touch == leftFingerDown) {
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            CGPoint locationInView = [self touchLocation:touch shouldNormalize:NO];
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            /* send moved event */
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            SDL_SendMouseMotion(NULL, SDL_TOUCH_MOUSEID, 0, locationInView.x, locationInView.y);
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        }
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        CGPoint locationInView = [self touchLocation:touch shouldNormalize:YES];
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#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS
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        SDL_SendTouchMotion(touchId, (long)touch,
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                            locationInView.x, locationInView.y, 1.0f);
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#else
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        int i;
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        for (i = 0; i < MAX_SIMULTANEOUS_TOUCHES; i++) {
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            if (finger[i] == touch) {
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                SDL_SendTouchMotion(touchId, i,
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                                    locationInView.x, locationInView.y, 1.0f);
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                break;
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            }
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        }
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#endif
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        touch = (UITouch*)[enumerator nextObject];
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    }
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}
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/*
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    ---- Keyboard related functionality below this line ----
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*/
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#if SDL_IPHONE_KEYBOARD
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@synthesize textInputRect = textInputRect;
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@synthesize keyboardHeight = keyboardHeight;
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/* Is the iPhone virtual keyboard visible onscreen? */
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- (BOOL)keyboardVisible
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{
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    return keyboardVisible;
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}
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/* Set ourselves up as a UITextFieldDelegate */
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- (void)initializeKeyboard
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{
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    textField = [[UITextField alloc] initWithFrame: CGRectZero];
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    textField.delegate = self;
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    /* placeholder so there is something to delete! */
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    textField.text = @" ";
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    /* set UITextInputTrait properties, mostly to defaults */
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    textField.autocapitalizationType = UITextAutocapitalizationTypeNone;
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    textField.autocorrectionType = UITextAutocorrectionTypeNo;
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    textField.enablesReturnKeyAutomatically = NO;
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    textField.keyboardAppearance = UIKeyboardAppearanceDefault;
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    textField.keyboardType = UIKeyboardTypeDefault;
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    textField.returnKeyType = UIReturnKeyDefault;
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    textField.secureTextEntry = NO;
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    textField.hidden = YES;
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    keyboardVisible = NO;
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    /* add the UITextField (hidden) to our view */
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    [self addSubview: textField];
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    [textField release];
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    _uikit_keyboard_init();
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}
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/* reveal onscreen virtual keyboard */
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- (void)showKeyboard
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{
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    keyboardVisible = YES;
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    [textField becomeFirstResponder];
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}
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/* hide onscreen virtual keyboard */
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- (void)hideKeyboard
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{
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    keyboardVisible = NO;
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    [textField resignFirstResponder];
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}
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/* UITextFieldDelegate method.  Invoked when user types something. */
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- (BOOL)textField:(UITextField *)_textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
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{
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    if ([string length] == 0) {
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        /* it wants to replace text with nothing, ie a delete */
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        SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_BACKSPACE);
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        SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_BACKSPACE);
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    }
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    else {
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        /* go through all the characters in the string we've been sent
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           and convert them to key presses */
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        int i;
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        for (i = 0; i < [string length]; i++) {
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            unichar c = [string characterAtIndex: i];
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            Uint16 mod = 0;
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            SDL_Scancode code;
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            if (c < 127) {
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                /* figure out the SDL_Scancode and SDL_keymod for this unichar */
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                code = unicharToUIKeyInfoTable[c].code;
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                mod  = unicharToUIKeyInfoTable[c].mod;
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            }
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            else {
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                /* we only deal with ASCII right now */
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                code = SDL_SCANCODE_UNKNOWN;
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                mod = 0;
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            }
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            if (mod & KMOD_SHIFT) {
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                /* If character uses shift, press shift down */
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                SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_LSHIFT);
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            }
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            /* send a keydown and keyup even for the character */
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            SDL_SendKeyboardKey(SDL_PRESSED, code);
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            SDL_SendKeyboardKey(SDL_RELEASED, code);
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            if (mod & KMOD_SHIFT) {
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                /* If character uses shift, press shift back up */
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                SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_LSHIFT);
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            }
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        }
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        SDL_SendKeyboardText([string UTF8String]);
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    }
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    return NO; /* don't allow the edit! (keep placeholder text there) */
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}
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/* Terminates the editing session */
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- (BOOL)textFieldShouldReturn:(UITextField*)_textField
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{
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    SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_RETURN);
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    SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_RETURN);
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    SDL_StopTextInput();
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    return YES;
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}
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#endif
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@end
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/* iPhone keyboard addition functions */
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#if SDL_IPHONE_KEYBOARD
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static SDL_uikitview * getWindowView(SDL_Window * window)
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{
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    if (window == NULL) {
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        SDL_SetError("Window does not exist");
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        return nil;
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    }
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    SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
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    SDL_uikitview *view = data != NULL ? data->view : nil;
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    if (view == nil) {
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        SDL_SetError("Window has no view");
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    }
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    return view;
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}
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SDL_bool UIKit_HasScreenKeyboardSupport(_THIS)
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{
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    return SDL_TRUE;
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}
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void UIKit_ShowScreenKeyboard(_THIS, SDL_Window *window)
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{
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    SDL_uikitview *view = getWindowView(window);
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    if (view != nil) {
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        [view showKeyboard];
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    }
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}
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void UIKit_HideScreenKeyboard(_THIS, SDL_Window *window)
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{
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    SDL_uikitview *view = getWindowView(window);
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    if (view != nil) {
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        [view hideKeyboard];
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    }
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}
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SDL_bool UIKit_IsScreenKeyboardShown(_THIS, SDL_Window *window)
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{
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    SDL_uikitview *view = getWindowView(window);
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    if (view == nil) {
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        return 0;
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    }
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    return view.keyboardVisible;
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}
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void _uikit_keyboard_update() {
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    SDL_Window *window = SDL_GetFocusWindow();
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    if (!window) { return; }
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    SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
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    if (!data) { return; }
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    SDL_uikitview *view = data->view;
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    if (!view) { return; }
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    SDL_Rect r = view.textInputRect;
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    int height = view.keyboardHeight;
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    int offsetx = 0;
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    int offsety = 0;
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    if (height) {
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   376
        int sw,sh;
slouken@7962
   377
        SDL_GetWindowSize(window,&sw,&sh);
slouken@7962
   378
        int bottom = (r.y + r.h);
slouken@7962
   379
        int kbottom = sh - height;
slouken@7962
   380
        if (kbottom < bottom) {
slouken@7962
   381
            offsety = kbottom-bottom;
slouken@7962
   382
        }
slouken@7962
   383
    }
slouken@7962
   384
    UIInterfaceOrientation ui_orient = [[UIApplication sharedApplication] statusBarOrientation];
slouken@7962
   385
    if (ui_orient == UIInterfaceOrientationLandscapeLeft) {
slouken@7962
   386
        int tmp = offsetx; offsetx = offsety; offsety = tmp;
slouken@7962
   387
    }
slouken@7962
   388
    if (ui_orient == UIInterfaceOrientationLandscapeRight) {
slouken@7962
   389
        offsety = -offsety;
slouken@7962
   390
        int tmp = offsetx; offsetx = offsety; offsety = tmp;
slouken@7962
   391
    }
slouken@7962
   392
    if (ui_orient == UIInterfaceOrientationPortraitUpsideDown) {
slouken@7962
   393
        offsety = -offsety;
slouken@7962
   394
    }
slouken@7962
   395
    if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)]) {
slouken@7962
   396
        float scale = [UIScreen mainScreen].scale;
slouken@7962
   397
        offsetx /= scale;
slouken@7962
   398
        offsety /= scale;
slouken@7962
   399
    }
slouken@7962
   400
    view.frame = CGRectMake(offsetx,offsety,view.frame.size.width,view.frame.size.height);
slouken@7962
   401
}
slouken@7962
   402
slouken@7962
   403
void _uikit_keyboard_set_height(int height) {
slouken@7962
   404
    SDL_uikitview *view = getWindowView(SDL_GetFocusWindow());
slouken@7962
   405
    if (view == nil) {
slouken@7962
   406
        return ;
slouken@7962
   407
    }
slouken@7962
   408
    
slouken@7962
   409
    view.keyboardHeight = height;
slouken@7962
   410
    _uikit_keyboard_update();
slouken@7962
   411
}
slouken@7962
   412
slouken@7962
   413
void _uikit_keyboard_init() {
slouken@7962
   414
    NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
slouken@7962
   415
    NSOperationQueue *queue = [NSOperationQueue mainQueue];
slouken@7962
   416
    [center addObserverForName:UIKeyboardWillShowNotification
slouken@7962
   417
                        object:nil
slouken@7962
   418
                         queue:queue
slouken@7962
   419
                    usingBlock:^(NSNotification *notification) {
slouken@7962
   420
                        int height = 0;
slouken@7962
   421
                        CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
slouken@7962
   422
                        height = keyboardSize.height;
slouken@7962
   423
                        UIInterfaceOrientation ui_orient = [[UIApplication sharedApplication] statusBarOrientation];
slouken@7962
   424
                        if (ui_orient == UIInterfaceOrientationLandscapeRight || ui_orient == UIInterfaceOrientationLandscapeLeft) {
slouken@7962
   425
                            height = keyboardSize.width;
slouken@7962
   426
                        }
slouken@7962
   427
                        if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)]) {
slouken@7962
   428
                            height *= [UIScreen mainScreen].scale;
slouken@7962
   429
                        }
slouken@7962
   430
                        _uikit_keyboard_set_height(height);
slouken@7962
   431
                    }
slouken@7962
   432
     ];
slouken@7962
   433
    [center addObserverForName:UIKeyboardDidHideNotification
slouken@7962
   434
                        object:nil
slouken@7962
   435
                         queue:queue
slouken@7962
   436
                    usingBlock:^(NSNotification *notification) {
slouken@7962
   437
                        _uikit_keyboard_set_height(0);
slouken@7962
   438
                    }
slouken@7962
   439
     ];
slouken@7962
   440
}
slouken@7962
   441
slouken@7962
   442
void
slouken@7962
   443
UIKit_SetTextInputRect(_THIS, SDL_Rect *rect)
slouken@7962
   444
{
slouken@7962
   445
    if (!rect) {
slouken@7962
   446
        SDL_InvalidParamError("rect");
slouken@7962
   447
        return;
slouken@7962
   448
    }
slouken@7962
   449
    
slouken@7962
   450
    SDL_uikitview *view = getWindowView(SDL_GetFocusWindow());
slouken@7962
   451
    if (view == nil) {
slouken@7962
   452
        return ;
slouken@7962
   453
    }
slouken@7962
   454
slouken@7962
   455
    view.textInputRect = *rect;
slouken@7962
   456
}
slouken@7962
   457
slouken@7962
   458
slouken@5132
   459
#endif /* SDL_IPHONE_KEYBOARD */
slouken@2765
   460
slouken@6044
   461
#endif /* SDL_VIDEO_DRIVER_UIKIT */
slouken@6044
   462
slouken@5132
   463
/* vi: set ts=4 sw=4 expandtab: */