src/video/cocoa/SDL_cocoavideo.m
author Ozkan Sezer <sezeroz@gmail.com>
Mon, 21 Oct 2019 22:22:28 +0300
changeset 13155 faed1bb24abb
parent 12998 b87ba0fad17e
permissions -rw-r--r--
SDL_endian.h: Use endian.h for OpenBSD.

Patch from OpenBSD CVS, authored by Donovan Watteau.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #if SDL_VIDEO_DRIVER_COCOA
    24 
    25 #include "SDL.h"
    26 #include "SDL_endian.h"
    27 #include "SDL_cocoavideo.h"
    28 #include "SDL_cocoashape.h"
    29 #include "SDL_cocoavulkan.h"
    30 #include "SDL_cocoametalview.h"
    31 #include "SDL_assert.h"
    32 
    33 /* Initialization/Query functions */
    34 static int Cocoa_VideoInit(_THIS);
    35 static void Cocoa_VideoQuit(_THIS);
    36 
    37 /* Cocoa driver bootstrap functions */
    38 
    39 static int
    40 Cocoa_Available(void)
    41 {
    42     return (1);
    43 }
    44 
    45 static void
    46 Cocoa_DeleteDevice(SDL_VideoDevice * device)
    47 {
    48     SDL_free(device->driverdata);
    49     SDL_free(device);
    50 }
    51 
    52 static SDL_VideoDevice *
    53 Cocoa_CreateDevice(int devindex)
    54 {
    55     SDL_VideoDevice *device;
    56     SDL_VideoData *data;
    57 
    58     Cocoa_RegisterApp();
    59 
    60     /* Initialize all variables that we clean on shutdown */
    61     device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
    62     if (device) {
    63         data = (struct SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
    64     } else {
    65         data = NULL;
    66     }
    67     if (!data) {
    68         SDL_OutOfMemory();
    69         SDL_free(device);
    70         return NULL;
    71     }
    72     device->driverdata = data;
    73 
    74     /* Set the function pointers */
    75     device->VideoInit = Cocoa_VideoInit;
    76     device->VideoQuit = Cocoa_VideoQuit;
    77     device->GetDisplayBounds = Cocoa_GetDisplayBounds;
    78     device->GetDisplayUsableBounds = Cocoa_GetDisplayUsableBounds;
    79     device->GetDisplayDPI = Cocoa_GetDisplayDPI;
    80     device->GetDisplayModes = Cocoa_GetDisplayModes;
    81     device->SetDisplayMode = Cocoa_SetDisplayMode;
    82     device->PumpEvents = Cocoa_PumpEvents;
    83     device->SuspendScreenSaver = Cocoa_SuspendScreenSaver;
    84 
    85     device->CreateSDLWindow = Cocoa_CreateWindow;
    86     device->CreateSDLWindowFrom = Cocoa_CreateWindowFrom;
    87     device->SetWindowTitle = Cocoa_SetWindowTitle;
    88     device->SetWindowIcon = Cocoa_SetWindowIcon;
    89     device->SetWindowPosition = Cocoa_SetWindowPosition;
    90     device->SetWindowSize = Cocoa_SetWindowSize;
    91     device->SetWindowMinimumSize = Cocoa_SetWindowMinimumSize;
    92     device->SetWindowMaximumSize = Cocoa_SetWindowMaximumSize;
    93     device->SetWindowOpacity = Cocoa_SetWindowOpacity;
    94     device->ShowWindow = Cocoa_ShowWindow;
    95     device->HideWindow = Cocoa_HideWindow;
    96     device->RaiseWindow = Cocoa_RaiseWindow;
    97     device->MaximizeWindow = Cocoa_MaximizeWindow;
    98     device->MinimizeWindow = Cocoa_MinimizeWindow;
    99     device->RestoreWindow = Cocoa_RestoreWindow;
   100     device->SetWindowBordered = Cocoa_SetWindowBordered;
   101     device->SetWindowResizable = Cocoa_SetWindowResizable;
   102     device->SetWindowFullscreen = Cocoa_SetWindowFullscreen;
   103     device->SetWindowGammaRamp = Cocoa_SetWindowGammaRamp;
   104     device->GetWindowGammaRamp = Cocoa_GetWindowGammaRamp;
   105     device->SetWindowGrab = Cocoa_SetWindowGrab;
   106     device->DestroyWindow = Cocoa_DestroyWindow;
   107     device->GetWindowWMInfo = Cocoa_GetWindowWMInfo;
   108     device->SetWindowHitTest = Cocoa_SetWindowHitTest;
   109     device->AcceptDragAndDrop = Cocoa_AcceptDragAndDrop;
   110 
   111     device->shape_driver.CreateShaper = Cocoa_CreateShaper;
   112     device->shape_driver.SetWindowShape = Cocoa_SetWindowShape;
   113     device->shape_driver.ResizeWindowShape = Cocoa_ResizeWindowShape;
   114 
   115 #if SDL_VIDEO_OPENGL_CGL
   116     device->GL_LoadLibrary = Cocoa_GL_LoadLibrary;
   117     device->GL_GetProcAddress = Cocoa_GL_GetProcAddress;
   118     device->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary;
   119     device->GL_CreateContext = Cocoa_GL_CreateContext;
   120     device->GL_MakeCurrent = Cocoa_GL_MakeCurrent;
   121     device->GL_GetDrawableSize = Cocoa_GL_GetDrawableSize;
   122     device->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval;
   123     device->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval;
   124     device->GL_SwapWindow = Cocoa_GL_SwapWindow;
   125     device->GL_DeleteContext = Cocoa_GL_DeleteContext;
   126 #elif SDL_VIDEO_OPENGL_EGL
   127     device->GL_LoadLibrary = Cocoa_GLES_LoadLibrary;
   128     device->GL_GetProcAddress = Cocoa_GLES_GetProcAddress;
   129     device->GL_UnloadLibrary = Cocoa_GLES_UnloadLibrary;
   130     device->GL_CreateContext = Cocoa_GLES_CreateContext;
   131     device->GL_MakeCurrent = Cocoa_GLES_MakeCurrent;
   132     device->GL_SetSwapInterval = Cocoa_GLES_SetSwapInterval;
   133     device->GL_GetSwapInterval = Cocoa_GLES_GetSwapInterval;
   134     device->GL_SwapWindow = Cocoa_GLES_SwapWindow;
   135     device->GL_DeleteContext = Cocoa_GLES_DeleteContext;
   136 #endif
   137 
   138 #if SDL_VIDEO_VULKAN
   139     device->Vulkan_LoadLibrary = Cocoa_Vulkan_LoadLibrary;
   140     device->Vulkan_UnloadLibrary = Cocoa_Vulkan_UnloadLibrary;
   141     device->Vulkan_GetInstanceExtensions = Cocoa_Vulkan_GetInstanceExtensions;
   142     device->Vulkan_CreateSurface = Cocoa_Vulkan_CreateSurface;
   143     device->Vulkan_GetDrawableSize = Cocoa_Vulkan_GetDrawableSize;
   144 #endif
   145 
   146 #if SDL_VIDEO_METAL
   147     device->Metal_CreateView = Cocoa_Metal_CreateView;
   148     device->Metal_DestroyView = Cocoa_Metal_DestroyView;
   149 #endif
   150 
   151     device->StartTextInput = Cocoa_StartTextInput;
   152     device->StopTextInput = Cocoa_StopTextInput;
   153     device->SetTextInputRect = Cocoa_SetTextInputRect;
   154 
   155     device->SetClipboardText = Cocoa_SetClipboardText;
   156     device->GetClipboardText = Cocoa_GetClipboardText;
   157     device->HasClipboardText = Cocoa_HasClipboardText;
   158 
   159     device->free = Cocoa_DeleteDevice;
   160 
   161     return device;
   162 }
   163 
   164 VideoBootStrap COCOA_bootstrap = {
   165     "cocoa", "SDL Cocoa video driver",
   166     Cocoa_Available, Cocoa_CreateDevice
   167 };
   168 
   169 
   170 int
   171 Cocoa_VideoInit(_THIS)
   172 {
   173     SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
   174 
   175     Cocoa_InitModes(_this);
   176     Cocoa_InitKeyboard(_this);
   177     if (Cocoa_InitMouse(_this) < 0) {
   178         return -1;
   179     }
   180 
   181     data->allow_spaces = ((floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6) && SDL_GetHintBoolean(SDL_HINT_VIDEO_MAC_FULLSCREEN_SPACES, SDL_TRUE));
   182 
   183     /* The IOPM assertion API can disable the screensaver as of 10.7. */
   184     data->screensaver_use_iopm = floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6;
   185 
   186     data->swaplock = SDL_CreateMutex();
   187     if (!data->swaplock) {
   188         return -1;
   189     }
   190 
   191     return 0;
   192 }
   193 
   194 void
   195 Cocoa_VideoQuit(_THIS)
   196 {
   197     SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
   198     Cocoa_QuitModes(_this);
   199     Cocoa_QuitKeyboard(_this);
   200     Cocoa_QuitMouse(_this);
   201     SDL_DestroyMutex(data->swaplock);
   202     data->swaplock = NULL;
   203 }
   204 
   205 /* This function assumes that it's called from within an autorelease pool */
   206 NSImage *
   207 Cocoa_CreateImage(SDL_Surface * surface)
   208 {
   209     SDL_Surface *converted;
   210     NSBitmapImageRep *imgrep;
   211     Uint8 *pixels;
   212     int i;
   213     NSImage *img;
   214 
   215     converted = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGBA32, 0);
   216     if (!converted) {
   217         return nil;
   218     }
   219 
   220     imgrep = [[[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL
   221                     pixelsWide: converted->w
   222                     pixelsHigh: converted->h
   223                     bitsPerSample: 8
   224                     samplesPerPixel: 4
   225                     hasAlpha: YES
   226                     isPlanar: NO
   227                     colorSpaceName: NSDeviceRGBColorSpace
   228                     bytesPerRow: converted->pitch
   229                     bitsPerPixel: converted->format->BitsPerPixel] autorelease];
   230     if (imgrep == nil) {
   231         SDL_FreeSurface(converted);
   232         return nil;
   233     }
   234 
   235     /* Copy the pixels */
   236     pixels = [imgrep bitmapData];
   237     SDL_memcpy(pixels, converted->pixels, converted->h * converted->pitch);
   238     SDL_FreeSurface(converted);
   239 
   240     /* Premultiply the alpha channel */
   241     for (i = (surface->h * surface->w); i--; ) {
   242         Uint8 alpha = pixels[3];
   243         pixels[0] = (Uint8)(((Uint16)pixels[0] * alpha) / 255);
   244         pixels[1] = (Uint8)(((Uint16)pixels[1] * alpha) / 255);
   245         pixels[2] = (Uint8)(((Uint16)pixels[2] * alpha) / 255);
   246         pixels += 4;
   247     }
   248 
   249     img = [[[NSImage alloc] initWithSize: NSMakeSize(surface->w, surface->h)] autorelease];
   250     if (img != nil) {
   251         [img addRepresentation: imgrep];
   252     }
   253     return img;
   254 }
   255 
   256 /*
   257  * Mac OS X log support.
   258  *
   259  * This doesn't really have aything to do with the interfaces of the SDL video
   260  *  subsystem, but we need to stuff this into an Objective-C source code file.
   261  *
   262  * NOTE: This is copypasted in src/video/uikit/SDL_uikitvideo.m! Be sure both
   263  *  versions remain identical!
   264  */
   265 
   266 void SDL_NSLog(const char *text)
   267 {
   268     NSLog(@"%s", text);
   269 }
   270 
   271 #endif /* SDL_VIDEO_DRIVER_COCOA */
   272 
   273 /* vim: set ts=4 sw=4 expandtab: */