dlls/winemac.drv/surface.c

   1 /*
   2  * Mac driver window surface implementation
   3  *
   4  * Copyright 1993, 1994, 2011 Alexandre Julliard
   5  * Copyright 2006 Damjan Jovanovic
   6  * Copyright 2012, 2013 Ken Thomases for CodeWeavers, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24
  25 #include "macdrv.h"
  26 #include "winuser.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(macdrv);
  29
  30
  31 /* only for use on sanitized BITMAPINFO structures */
  32 static inline int get_dib_info_size(const BITMAPINFO *info, UINT coloruse)
  33 {
  34     if (info->bmiHeader.biCompression == BI_BITFIELDS)
  35         return sizeof(BITMAPINFOHEADER) + 3 * sizeof(DWORD);
  36     if (coloruse == DIB_PAL_COLORS)
  37         return sizeof(BITMAPINFOHEADER) + info->bmiHeader.biClrUsed * sizeof(WORD);
  38     return FIELD_OFFSET(BITMAPINFO, bmiColors[info->bmiHeader.biClrUsed]);
  39 }
  40
  41 static inline int get_dib_stride(int width, int bpp)
  42 {
  43     return ((width * bpp + 31) >> 3) & ~3;
  44 }
  45
  46 static inline int get_dib_image_size(const BITMAPINFO *info)
  47 {
  48     return get_dib_stride(info->bmiHeader.biWidth, info->bmiHeader.biBitCount)
  49         * abs(info->bmiHeader.biHeight);
  50 }
  51
  52 static inline void reset_bounds(RECT *bounds)
  53 {
  54     bounds->left = bounds->top = INT_MAX;
  55     bounds->right = bounds->bottom = INT_MIN;
  56 }
  57
  58
  59 struct macdrv_window_surface
  60 {
  61     struct window_surface   header;
  62     macdrv_window           window;
  63     RECT                    bounds;
  64     HRGN                    region;
  65     HRGN                    drawn;
  66     BOOL                    use_alpha;
  67     RGNDATA                *blit_data;
  68     BYTE                   *bits;
  69     pthread_mutex_t         mutex;
  70     BITMAPINFO              info;   /* variable size, must be last */
  71 };
  72
  73 static struct macdrv_window_surface *get_mac_surface(struct window_surface *surface)
  74 {
  75     return (struct macdrv_window_surface *)surface;
  76 }
  77
  78 /***********************************************************************
  79  *              update_blit_data
  80  */
  81 static void update_blit_data(struct macdrv_window_surface *surface)
  82 {
  83     HeapFree(GetProcessHeap(), 0, surface->blit_data);
  84     surface->blit_data = NULL;
  85
  86     if (surface->drawn)
  87     {
  88         HRGN blit = CreateRectRgn(0, 0, 0, 0);
  89
  90         if (CombineRgn(blit, surface->drawn, 0, RGN_COPY) > NULLREGION &&
  91             (!surface->region || CombineRgn(blit, blit, surface->region, RGN_AND) > NULLREGION) &&
  92             OffsetRgn(blit, surface->header.rect.left, surface->header.rect.top) > NULLREGION)
  93             surface->blit_data = get_region_data(blit, 0);
  94
  95         DeleteObject(blit);
  96     }
  97 }
  98
  99 /***********************************************************************
 100  *              macdrv_surface_lock
 101  */
 102 static void macdrv_surface_lock(struct window_surface *window_surface)
 103 {
 104     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 105
 106     pthread_mutex_lock(&surface->mutex);
 107 }
 108
 109 /***********************************************************************
 110  *              macdrv_surface_unlock
 111  */
 112 static void macdrv_surface_unlock(struct window_surface *window_surface)
 113 {
 114     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 115
 116     pthread_mutex_unlock(&surface->mutex);
 117 }
 118
 119 /***********************************************************************
 120  *              macdrv_surface_get_bitmap_info
 121  */
 122 static void *macdrv_surface_get_bitmap_info(struct window_surface *window_surface,
 123                                             BITMAPINFO *info)
 124 {
 125     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 126
 127     memcpy(info, &surface->info, get_dib_info_size(&surface->info, DIB_RGB_COLORS));
 128     return surface->bits;
 129 }
 130
 131 /***********************************************************************
 132  *              macdrv_surface_get_bounds
 133  */
 134 static RECT *macdrv_surface_get_bounds(struct window_surface *window_surface)
 135 {
 136     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 137
 138     return &surface->bounds;
 139 }
 140
 141 /***********************************************************************
 142  *              macdrv_surface_set_region
 143  */
 144 static void macdrv_surface_set_region(struct window_surface *window_surface, HRGN region)
 145 {
 146     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 147
 148     TRACE("updating surface %p with %p\n", surface, region);
 149
 150     window_surface->funcs->lock(window_surface);
 151
 152     if (region)
 153     {
 154         if (!surface->region) surface->region = CreateRectRgn(0, 0, 0, 0);
 155         CombineRgn(surface->region, region, 0, RGN_COPY);
 156     }
 157     else
 158     {
 159         if (surface->region) DeleteObject(surface->region);
 160         surface->region = 0;
 161     }
 162     update_blit_data(surface);
 163
 164     window_surface->funcs->unlock(window_surface);
 165 }
 166
 167 /***********************************************************************
 168  *              macdrv_surface_flush
 169  */
 170 static void macdrv_surface_flush(struct window_surface *window_surface)
 171 {
 172     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 173     CGRect rect;
 174     HRGN region;
 175
 176     window_surface->funcs->lock(window_surface);
 177
 178     TRACE("flushing %p %s bounds %s bits %p\n", surface, wine_dbgstr_rect(&surface->header.rect),
 179           wine_dbgstr_rect(&surface->bounds), surface->bits);
 180
 181     rect = cgrect_from_rect(surface->bounds);
 182     rect = CGRectOffset(rect, surface->header.rect.left, surface->header.rect.top);
 183
 184     if (!IsRectEmpty(&surface->bounds) && (region = CreateRectRgnIndirect(&surface->bounds)))
 185     {
 186         if (surface->drawn)
 187         {
 188             CombineRgn(surface->drawn, surface->drawn, region, RGN_OR);
 189             DeleteObject(region);
 190         }
 191         else
 192             surface->drawn = region;
 193     }
 194     update_blit_data(surface);
 195     reset_bounds(&surface->bounds);
 196
 197     window_surface->funcs->unlock(window_surface);
 198
 199     if (!CGRectIsEmpty(rect))
 200         macdrv_window_needs_display(surface->window, rect);
 201 }
 202
 203 /***********************************************************************
 204  *              macdrv_surface_destroy
 205  */
 206 static void macdrv_surface_destroy(struct window_surface *window_surface)
 207 {
 208     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 209
 210     TRACE("freeing %p bits %p\n", surface, surface->bits);
 211     HeapFree(GetProcessHeap(), 0, surface->bits);
 212     pthread_mutex_destroy(&surface->mutex);
 213     HeapFree(GetProcessHeap(), 0, surface);
 214 }
 215
 216 static const struct window_surface_funcs macdrv_surface_funcs =
 217 {
 218     macdrv_surface_lock,
 219     macdrv_surface_unlock,
 220     macdrv_surface_get_bitmap_info,
 221     macdrv_surface_get_bounds,
 222     macdrv_surface_set_region,
 223     macdrv_surface_flush,
 224     macdrv_surface_destroy,
 225 };
 226
 227 /***********************************************************************
 228  *              create_surface
 229  */
 230 struct window_surface *create_surface(macdrv_window window, const RECT *rect,
 231                                       struct window_surface *old_surface, BOOL use_alpha)
 232 {
 233     struct macdrv_window_surface *surface;
 234     struct macdrv_window_surface *old_mac_surface = get_mac_surface(old_surface);
 235     int width = rect->right - rect->left, height = rect->bottom - rect->top;
 236     DWORD *colors;
 237     pthread_mutexattr_t attr;
 238     int err;
 239     DWORD window_background;
 240
 241     surface = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 242                         FIELD_OFFSET(struct macdrv_window_surface, info.bmiColors[3]));
 243     if (!surface) return NULL;
 244
 245     err = pthread_mutexattr_init(&attr);
 246     if (!err)
 247     {
 248         err = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
 249         if (!err)
 250             err = pthread_mutex_init(&surface->mutex, &attr);
 251         pthread_mutexattr_destroy(&attr);
 252     }
 253     if (err)
 254     {
 255         HeapFree(GetProcessHeap(), 0, surface);
 256         return NULL;
 257     }
 258
 259     surface->info.bmiHeader.biSize        = sizeof(surface->info.bmiHeader);
 260     surface->info.bmiHeader.biWidth       = width;
 261     surface->info.bmiHeader.biHeight      = height; /* bottom-up */
 262     surface->info.bmiHeader.biPlanes      = 1;
 263     surface->info.bmiHeader.biBitCount    = 32;
 264     surface->info.bmiHeader.biSizeImage   = get_dib_image_size(&surface->info);
 265     surface->info.bmiHeader.biCompression = BI_RGB;
 266     surface->info.bmiHeader.biClrUsed     = 0;
 267
 268     colors = (DWORD *)((char *)&surface->info + surface->info.bmiHeader.biSize);
 269     colors[0] = 0x00ff0000;
 270     colors[1] = 0x0000ff00;
 271     colors[2] = 0x000000ff;
 272
 273     surface->header.funcs = &macdrv_surface_funcs;
 274     surface->header.rect  = *rect;
 275     surface->header.ref   = 1;
 276     surface->window = window;
 277     reset_bounds(&surface->bounds);
 278     if (old_mac_surface && old_mac_surface->drawn)
 279     {
 280         surface->drawn = CreateRectRgnIndirect(rect);
 281         OffsetRgn(surface->drawn, -rect->left, -rect->top);
 282         if (CombineRgn(surface->drawn, surface->drawn, old_mac_surface->drawn, RGN_AND) <= NULLREGION)
 283         {
 284             DeleteObject(surface->drawn);
 285             surface->drawn = 0;
 286         }
 287     }
 288     update_blit_data(surface);
 289     surface->use_alpha = use_alpha;
 290     surface->bits = HeapAlloc(GetProcessHeap(), 0, surface->info.bmiHeader.biSizeImage);
 291     if (!surface->bits) goto failed;
 292     window_background = macdrv_window_background_color();
 293     memset_pattern4(surface->bits, &window_background, surface->info.bmiHeader.biSizeImage);
 294
 295     TRACE("created %p for %p %s bits %p-%p\n", surface, window, wine_dbgstr_rect(rect),
 296           surface->bits, surface->bits + surface->info.bmiHeader.biSizeImage);
 297
 298     return &surface->header;
 299
 300 failed:
 301     macdrv_surface_destroy(&surface->header);
 302     return NULL;
 303 }
 304
 305 /***********************************************************************
 306  *              set_surface_use_alpha
 307  */
 308 void set_surface_use_alpha(struct window_surface *window_surface, BOOL use_alpha)
 309 {
 310     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 311     surface->use_alpha = use_alpha;
 312 }
 313
 314 /***********************************************************************
 315  *              set_window_surface
 316  */
 317 void set_window_surface(macdrv_window window, struct window_surface *window_surface)
 318 {
 319     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 320     macdrv_set_window_surface(window, window_surface, surface ? &surface->mutex : NULL);
 321 }
 322
 323 /***********************************************************************
 324  *              get_surface_blit_rects
 325  *
 326  * Caller must hold the surface lock.  Indirectly returns the surface
 327  * blit region rects.  Returns zero if the surface has nothing to blit;
 328  * returns non-zero if the surface does have rects to blit (drawn area
 329  * which isn't clipped away by a surface region).
 330  *
 331  * IMPORTANT: This function is called from non-Wine threads, so it
 332  *            must not use Win32 or Wine functions, including debug
 333  *            logging.
 334  */
 335 int get_surface_blit_rects(void *window_surface, const CGRect **rects, int *count)
 336 {
 337     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 338
 339     if (surface->blit_data)
 340     {
 341         *rects = (const CGRect*)surface->blit_data->Buffer;
 342         *count = surface->blit_data->rdh.nCount;
 343     }
 344     else
 345     {
 346         *rects = NULL;
 347         *count = 0;
 348     }
 349
 350     return (surface->blit_data != NULL);
 351 }
 352
 353 /***********************************************************************
 354  *              create_surface_image
 355  *
 356  * Caller must hold the surface lock.  On input, *rect is the requested
 357  * image rect, relative to the window whole_rect, a.k.a. visible_rect.
 358  * On output, it's been intersected with that part backed by the surface
 359  * and is the actual size of the returned image.  copy_data indicates if
 360  * the caller will keep the returned image beyond the point where the
 361  * surface bits can be guaranteed to remain valid and unchanged.  If so,
 362  * the bits are copied instead of merely referenced by the image.
 363  *
 364  * IMPORTANT: This function is called from non-Wine threads, so it
 365  *            must not use Win32 or Wine functions, including debug
 366  *            logging.
 367  */
 368 CGImageRef create_surface_image(void *window_surface, CGRect *rect, int copy_data)
 369 {
 370     CGImageRef cgimage = NULL;
 371     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 372     int width, height;
 373
 374     width  = surface->header.rect.right - surface->header.rect.left;
 375     height = surface->header.rect.bottom - surface->header.rect.top;
 376     *rect = CGRectIntersection(cgrect_from_rect(surface->header.rect), *rect);
 377     if (!CGRectIsEmpty(*rect))
 378     {
 379         CGRect visrect;
 380         CGColorSpaceRef colorspace;
 381         CGDataProviderRef provider;
 382         int bytes_per_row, offset, size;
 383         CGImageAlphaInfo alphaInfo;
 384
 385         visrect = CGRectOffset(*rect, -surface->header.rect.left, -surface->header.rect.top);
 386
 387         colorspace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
 388         bytes_per_row = get_dib_stride(width, 32);
 389         offset = CGRectGetMinX(visrect) * 4 + (height - CGRectGetMaxY(visrect)) * bytes_per_row;
 390         size = min(CGRectGetHeight(visrect) * bytes_per_row,
 391                    surface->info.bmiHeader.biSizeImage - offset);
 392
 393         if (copy_data)
 394         {
 395             CFDataRef data = CFDataCreate(NULL, (UInt8*)surface->bits + offset, size);
 396             provider = CGDataProviderCreateWithCFData(data);
 397             CFRelease(data);
 398         }
 399         else
 400             provider = CGDataProviderCreateWithData(NULL, surface->bits + offset, size, NULL);
 401
 402         alphaInfo = surface->use_alpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaNoneSkipFirst;
 403         cgimage = CGImageCreate(CGRectGetWidth(visrect), CGRectGetHeight(visrect),
 404                                 8, 32, bytes_per_row, colorspace,
 405                                 alphaInfo | kCGBitmapByteOrder32Little,
 406                                 provider, NULL, FALSE, kCGRenderingIntentDefault);
 407         CGDataProviderRelease(provider);
 408         CGColorSpaceRelease(colorspace);
 409     }
 410
 411     return cgimage;
 412 }
 413
 414 /***********************************************************************
 415  *              surface_clip_to_visible_rect
 416  *
 417  * Intersect the accumulated drawn region with a new visible rect,
 418  * effectively discarding stale drawing in the surface slack area.
 419  */
 420 void surface_clip_to_visible_rect(struct window_surface *window_surface, const RECT *visible_rect)
 421 {
 422     struct macdrv_window_surface *surface = get_mac_surface(window_surface);
 423
 424     window_surface->funcs->lock(window_surface);
 425
 426     if (surface->drawn)
 427     {
 428         RECT rect;
 429         HRGN region;
 430
 431         rect = *visible_rect;
 432         OffsetRect(&rect, -rect.left, -rect.top);
 433
 434         if ((region = CreateRectRgnIndirect(&rect)))
 435         {
 436             CombineRgn(surface->drawn, surface->drawn, region, RGN_AND);
 437             DeleteObject(region);
 438
 439             update_blit_data(surface);
 440         }
 441     }
 442
 443     window_surface->funcs->unlock(window_surface);
 444 }