src/video/uikit/SDL_uikitwindow.m - third_party/sdl - Git at Google

 /*
     SDL - Simple DirectMedia Layer
     Copyright (C) 1997-2011 Sam Lantinga

     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.

     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.

     You should have received a copy of the GNU Lesser General Public
     License along with this library; if not, write to the Free Software
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

     Sam Lantinga
     slouken@libsdl.org
 */
 #include "SDL_config.h"

 #include "SDL_syswm.h"
 #include "SDL_video.h"
 #include "SDL_mouse.h"
 #include "SDL_assert.h"
 #include "../SDL_sysvideo.h"
 #include "../SDL_pixels_c.h"
 #include "../../events/SDL_events_c.h"

 #include "SDL_uikitvideo.h"
 #include "SDL_uikitevents.h"
 #include "SDL_uikitwindow.h"
 #import "SDL_uikitappdelegate.h"

 #import "SDL_uikitopenglview.h"

 #include <Foundation/Foundation.h>

 @implementation SDL_uikitviewcontroller

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

 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orient {
     if (self->window->flags & SDL_WINDOW_RESIZABLE) {
         return YES;  // any orientation is okay.
     }

     // If not resizable, allow device to orient to other matching sizes
     //  (that is, let the user turn the device upside down...same screen
     //   dimensions, but it lets the user place the device where it's most
     //   comfortable in relation to its physical buttons, headphone jack, etc).
     switch (orient) {
         case UIInterfaceOrientationLandscapeLeft:
         case UIInterfaceOrientationLandscapeRight:
             return (self->window->w >= self->window->h);

         case UIInterfaceOrientationPortrait:
         case UIInterfaceOrientationPortraitUpsideDown:
             return (self->window->h >= self->window->w);

         default: break;
     }

     return NO;  // Nothing else is acceptable.
 }

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

 // Send a resized event when the orientation changes.
 - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
     if ((self->window->flags & SDL_WINDOW_RESIZABLE) == 0) {
         return;   // don't care, we're just flipping over in this case.
     }

     const UIInterfaceOrientation toInterfaceOrientation = [self interfaceOrientation];
     SDL_WindowData *data = self->window->driverdata;
     UIWindow *uiwindow = data->uiwindow;
     UIScreen *uiscreen = [uiwindow screen];
     const int noborder = self->window->flags & SDL_WINDOW_BORDERLESS;
     CGRect frame = noborder ? [uiscreen bounds] : [uiscreen applicationFrame];
     const CGSize size = frame.size;
     int w, h;

     switch (toInterfaceOrientation) {
         case UIInterfaceOrientationPortrait:
         case UIInterfaceOrientationPortraitUpsideDown:
             w = (size.width < size.height) ? size.width : size.height;
             h = (size.width > size.height) ? size.width : size.height;
             break;

         case UIInterfaceOrientationLandscapeLeft:
         case UIInterfaceOrientationLandscapeRight:
             w = (size.width > size.height) ? size.width : size.height;
             h = (size.width < size.height) ? size.width : size.height;
             break;

         default:
             SDL_assert(0 && "Unexpected interface orientation!");
             return;
     }

     frame.size.width = w;
     frame.size.height = h;
     frame.origin.x = 0;
     frame.origin.y = 0;

     [uiwindow setFrame:frame];
     [data->view updateFrame];
     SDL_SendWindowEvent(self->window, SDL_WINDOWEVENT_RESIZED, w, h);
 }

 @end


 static int SetupWindowData(_THIS, SDL_Window *window, UIWindow *uiwindow, SDL_bool created)
 {
     SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
     UIScreen *uiscreen = (UIScreen *) display->driverdata;
     SDL_WindowData *data;

     /* Allocate the window data */
     data = (SDL_WindowData *)SDL_malloc(sizeof(*data));
     if (!data) {
         SDL_OutOfMemory();
         return -1;
     }
     data->uiwindow = uiwindow;
     data->viewcontroller = nil;
     data->view = nil;

     /* Fill in the SDL window with the window data */
     {
         window->x = 0;
         window->y = 0;
         window->w = (int)uiwindow.frame.size.width;
         window->h = (int)uiwindow.frame.size.height;
     }

     window->driverdata = data;

     // !!! FIXME: should we force this? Shouldn't specifying FULLSCREEN
     // !!! FIXME:  imply BORDERLESS?
     window->flags |= SDL_WINDOW_FULLSCREEN;        /* window is always fullscreen */
     window->flags |= SDL_WINDOW_SHOWN;            /* only one window on iOS, always shown */

     // SDL_WINDOW_BORDERLESS controls whether status bar is hidden.
     // This is only set if the window is on the main screen. Other screens
     //  just force the window to have the borderless flag.
     if ([UIScreen mainScreen] != uiscreen) {
         window->flags &= ~SDL_WINDOW_RESIZABLE;  // window is NEVER resizeable
         window->flags &= ~SDL_WINDOW_INPUT_FOCUS;  // never has input focus
         window->flags |= SDL_WINDOW_BORDERLESS;  // never has a status bar.
     } else {
         window->flags |= SDL_WINDOW_INPUT_FOCUS;  // always has input focus

         if (window->flags & SDL_WINDOW_BORDERLESS) {
             [UIApplication sharedApplication].statusBarHidden = YES;
         } else {
             [UIApplication sharedApplication].statusBarHidden = NO;
         }

         const UIDeviceOrientation o = [[UIDevice currentDevice] orientation];
         const BOOL landscape = (o == UIDeviceOrientationLandscapeLeft) ||
                                    (o == UIDeviceOrientationLandscapeRight);
         const BOOL rotate = ( ((window->w > window->h) && (!landscape)) ||
                               ((window->w < window->h) && (landscape)) );

         // The View Controller will handle rotating the view when the
         //  device orientation changes. This will trigger resize events, if
         //  appropriate.
         SDL_uikitviewcontroller *controller;
         controller = [SDL_uikitviewcontroller alloc];
         data->viewcontroller = [controller initWithSDLWindow:window];
         [data->viewcontroller setTitle:@"SDL App"];  // !!! FIXME: hook up SDL_SetWindowTitle()
         // !!! FIXME: if (rotate), force a "resize" right at the start
     }

     return 0;
 }

 int
 UIKit_CreateWindow(_THIS, SDL_Window *window)
 {
     SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
     UIScreen *uiscreen = (UIScreen *) display->driverdata;
     const BOOL external = ([UIScreen mainScreen] != uiscreen);

     // SDL currently puts this window at the start of display's linked list. We rely on this.
     SDL_assert(_this->windows == window);

     /* We currently only handle a single window per display on iOS */
     if (window->next != NULL) {
         SDL_SetError("Only one window allowed per display.");
         return -1;
     }

     // Non-mainscreen windows must be force to borderless, as there's no
     //  status bar there, and we want to get the right dimensions later in
     //  this function.
     if (external) {
         window->flags |= SDL_WINDOW_BORDERLESS;
     }

     // If monitor has a resolution of 0x0 (hasn't been explicitly set by the
     //  user, so it's in standby), try to force the display to a resolution
     //  that most closely matches the desired window size.
     if (SDL_UIKit_supports_multiple_displays) {
         const CGSize origsize = [[uiscreen currentMode] size];
         if ((origsize.width == 0.0f) && (origsize.height == 0.0f)) {
             if (display->num_display_modes == 0) {
                 _this->GetDisplayModes(_this, display);
             }

             int i;
             const SDL_DisplayMode *bestmode = NULL;
             for (i = display->num_display_modes; i >= 0; i--) {
                 const SDL_DisplayMode *mode = &display->display_modes[i];
                 if ((mode->w >= window->w) && (mode->h >= window->h))
                     bestmode = mode;
             }

             if (bestmode) {
                 UIScreenMode *uimode = (UIScreenMode *) bestmode->driverdata;
                 [uiscreen setCurrentMode:uimode];
                 display->desktop_mode = *bestmode;
                 display->current_mode = *bestmode;
             }
         }
     }

     /* ignore the size user requested, and make a fullscreen window */
     // !!! FIXME: can we have a smaller view?
     UIWindow *uiwindow = [UIWindow alloc];
     if (window->flags & SDL_WINDOW_BORDERLESS)
         uiwindow = [uiwindow initWithFrame:[uiscreen bounds]];
     else
         uiwindow = [uiwindow initWithFrame:[uiscreen applicationFrame]];

     // put the window on an external display if appropriate. This implicitly
     //  does [uiwindow setframe:[uiscreen bounds]], so don't do it on the
     //  main display, where we land by default, as that would eat the
     //  status bar real estate.
     if (external) {
         [uiwindow setScreen:uiscreen];
     }

     if (SetupWindowData(_this, window, uiwindow, SDL_TRUE) < 0) {
         [uiwindow release];
         return -1;
     }

     return 1;

 }

 void
 UIKit_DestroyWindow(_THIS, SDL_Window * window) {
     SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
     if (data) {
         [data->viewcontroller release];
         [data->uiwindow release];
         SDL_free(data);
         window->driverdata = NULL;
     }
 }

 SDL_bool
 UIKit_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
 {
     UIWindow *uiwindow = ((SDL_WindowData *) window->driverdata)->uiwindow;

     if (info->version.major <= SDL_MAJOR_VERSION) {
         info->subsystem = SDL_SYSWM_UIKIT;
         info->info.uikit.window = uiwindow;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",
                      SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
         return SDL_FALSE;
     }
 }

 /* vi: set ts=4 sw=4 expandtab: */
	/*
	SDL - Simple DirectMedia Layer
	Copyright (C) 1997-2011 Sam Lantinga

	This library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License as published by the Free Software Foundation; either
	version 2.1 of the License, or (at your option) any later version.

	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public
	License along with this library; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

	Sam Lantinga
	slouken@libsdl.org
	*/
	#include "SDL_config.h"

	#include "SDL_syswm.h"
	#include "SDL_video.h"
	#include "SDL_mouse.h"
	#include "SDL_assert.h"
	#include "../SDL_sysvideo.h"
	#include "../SDL_pixels_c.h"
	#include "../../events/SDL_events_c.h"

	#include "SDL_uikitvideo.h"
	#include "SDL_uikitevents.h"
	#include "SDL_uikitwindow.h"
	#import "SDL_uikitappdelegate.h"

	#import "SDL_uikitopenglview.h"

	#include <Foundation/Foundation.h>

	@implementation SDL_uikitviewcontroller

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

	- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orient {
	if (self->window->flags & SDL_WINDOW_RESIZABLE) {
	return YES; // any orientation is okay.
	}

	// If not resizable, allow device to orient to other matching sizes
	// (that is, let the user turn the device upside down...same screen
	// dimensions, but it lets the user place the device where it's most
	// comfortable in relation to its physical buttons, headphone jack, etc).
	switch (orient) {
	case UIInterfaceOrientationLandscapeLeft:
	case UIInterfaceOrientationLandscapeRight:
	return (self->window->w >= self->window->h);

	case UIInterfaceOrientationPortrait:
	case UIInterfaceOrientationPortraitUpsideDown:
	return (self->window->h >= self->window->w);

	default: break;
	}

	return NO; // Nothing else is acceptable.
	}

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

	// Send a resized event when the orientation changes.
	- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
	if ((self->window->flags & SDL_WINDOW_RESIZABLE) == 0) {
	return; // don't care, we're just flipping over in this case.
	}

	const UIInterfaceOrientation toInterfaceOrientation = [self interfaceOrientation];
	SDL_WindowData *data = self->window->driverdata;
	UIWindow *uiwindow = data->uiwindow;
	UIScreen *uiscreen = [uiwindow screen];
	const int noborder = self->window->flags & SDL_WINDOW_BORDERLESS;
	CGRect frame = noborder ? [uiscreen bounds] : [uiscreen applicationFrame];
	const CGSize size = frame.size;
	int w, h;

	switch (toInterfaceOrientation) {
	case UIInterfaceOrientationPortrait:
	case UIInterfaceOrientationPortraitUpsideDown:
	w = (size.width < size.height) ? size.width : size.height;
	h = (size.width > size.height) ? size.width : size.height;
	break;

	case UIInterfaceOrientationLandscapeLeft:
	case UIInterfaceOrientationLandscapeRight:
	w = (size.width > size.height) ? size.width : size.height;
	h = (size.width < size.height) ? size.width : size.height;
	break;

	default:
	SDL_assert(0 && "Unexpected interface orientation!");
	return;
	}

	frame.size.width = w;
	frame.size.height = h;
	frame.origin.x = 0;
	frame.origin.y = 0;

	[uiwindow setFrame:frame];
	[data->view updateFrame];
	SDL_SendWindowEvent(self->window, SDL_WINDOWEVENT_RESIZED, w, h);
	}

	@end



	static int SetupWindowData(_THIS, SDL_Window window, UIWindow uiwindow, SDL_bool created)
	{
	SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
	UIScreen uiscreen = (UIScreen ) display->driverdata;
	SDL_WindowData *data;

	/* Allocate the window data */
	data = (SDL_WindowData )SDL_malloc(sizeof(data));
	if (!data) {
	SDL_OutOfMemory();
	return -1;
	}
	data->uiwindow = uiwindow;
	data->viewcontroller = nil;
	data->view = nil;

	/* Fill in the SDL window with the window data */
	{
	window->x = 0;
	window->y = 0;
	window->w = (int)uiwindow.frame.size.width;
	window->h = (int)uiwindow.frame.size.height;
	}

	window->driverdata = data;

	// !!! FIXME: should we force this? Shouldn't specifying FULLSCREEN
	// !!! FIXME: imply BORDERLESS?
	window->flags \|= SDL_WINDOW_FULLSCREEN; /* window is always fullscreen */
	window->flags \|= SDL_WINDOW_SHOWN; /* only one window on iOS, always shown */

	// SDL_WINDOW_BORDERLESS controls whether status bar is hidden.
	// This is only set if the window is on the main screen. Other screens
	// just force the window to have the borderless flag.
	if ([UIScreen mainScreen] != uiscreen) {
	window->flags &= ~SDL_WINDOW_RESIZABLE; // window is NEVER resizeable
	window->flags &= ~SDL_WINDOW_INPUT_FOCUS; // never has input focus
	window->flags \|= SDL_WINDOW_BORDERLESS; // never has a status bar.
	} else {
	window->flags \|= SDL_WINDOW_INPUT_FOCUS; // always has input focus

	if (window->flags & SDL_WINDOW_BORDERLESS) {
	[UIApplication sharedApplication].statusBarHidden = YES;
	} else {
	[UIApplication sharedApplication].statusBarHidden = NO;
	}

	const UIDeviceOrientation o = [[UIDevice currentDevice] orientation];
	const BOOL landscape = (o == UIDeviceOrientationLandscapeLeft) \|\|
	(o == UIDeviceOrientationLandscapeRight);
	const BOOL rotate = ( ((window->w > window->h) && (!landscape)) \|\|
	((window->w < window->h) && (landscape)) );

	// The View Controller will handle rotating the view when the
	// device orientation changes. This will trigger resize events, if
	// appropriate.
	SDL_uikitviewcontroller *controller;
	controller = [SDL_uikitviewcontroller alloc];
	data->viewcontroller = [controller initWithSDLWindow:window];
	[data->viewcontroller setTitle:@"SDL App"]; // !!! FIXME: hook up SDL_SetWindowTitle()
	// !!! FIXME: if (rotate), force a "resize" right at the start
	}

	return 0;
	}

	int
	UIKit_CreateWindow(_THIS, SDL_Window *window)
	{
	SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
	UIScreen uiscreen = (UIScreen ) display->driverdata;
	const BOOL external = ([UIScreen mainScreen] != uiscreen);

	// SDL currently puts this window at the start of display's linked list. We rely on this.
	SDL_assert(_this->windows == window);

	/* We currently only handle a single window per display on iOS */
	if (window->next != NULL) {
	SDL_SetError("Only one window allowed per display.");
	return -1;
	}

	// Non-mainscreen windows must be force to borderless, as there's no
	// status bar there, and we want to get the right dimensions later in
	// this function.
	if (external) {
	window->flags \|= SDL_WINDOW_BORDERLESS;
	}

	// If monitor has a resolution of 0x0 (hasn't been explicitly set by the
	// user, so it's in standby), try to force the display to a resolution
	// that most closely matches the desired window size.
	if (SDL_UIKit_supports_multiple_displays) {
	const CGSize origsize = [[uiscreen currentMode] size];
	if ((origsize.width == 0.0f) && (origsize.height == 0.0f)) {
	if (display->num_display_modes == 0) {
	_this->GetDisplayModes(_this, display);
	}

	int i;
	const SDL_DisplayMode *bestmode = NULL;
	for (i = display->num_display_modes; i >= 0; i--) {
	const SDL_DisplayMode *mode = &display->display_modes[i];
	if ((mode->w >= window->w) && (mode->h >= window->h))
	bestmode = mode;
	}

	if (bestmode) {
	UIScreenMode uimode = (UIScreenMode ) bestmode->driverdata;
	[uiscreen setCurrentMode:uimode];
	display->desktop_mode = *bestmode;
	display->current_mode = *bestmode;
	}
	}
	}

	/* ignore the size user requested, and make a fullscreen window */
	// !!! FIXME: can we have a smaller view?
	UIWindow *uiwindow = [UIWindow alloc];
	if (window->flags & SDL_WINDOW_BORDERLESS)
	uiwindow = [uiwindow initWithFrame:[uiscreen bounds]];
	else
	uiwindow = [uiwindow initWithFrame:[uiscreen applicationFrame]];

	// put the window on an external display if appropriate. This implicitly
	// does [uiwindow setframe:[uiscreen bounds]], so don't do it on the
	// main display, where we land by default, as that would eat the
	// status bar real estate.
	if (external) {
	[uiwindow setScreen:uiscreen];
	}

	if (SetupWindowData(_this, window, uiwindow, SDL_TRUE) < 0) {
	[uiwindow release];
	return -1;
	}

	return 1;

	}

	void
	UIKit_DestroyWindow(_THIS, SDL_Window * window) {
	SDL_WindowData data = (SDL_WindowData )window->driverdata;
	if (data) {
	[data->viewcontroller release];
	[data->uiwindow release];
	SDL_free(data);
	window->driverdata = NULL;
	}
	}

	SDL_bool
	UIKit_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
	{
	UIWindow uiwindow = ((SDL_WindowData ) window->driverdata)->uiwindow;

	if (info->version.major <= SDL_MAJOR_VERSION) {
	info->subsystem = SDL_SYSWM_UIKIT;
	info->info.uikit.window = uiwindow;
	return SDL_TRUE;
	} else {
	SDL_SetError("Application not compiled with SDL %d.%d\n",
	SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
	return SDL_FALSE;
	}
	}

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