| 1 | /* |
| 2 | |
| 3 | Copyright 1990, 1998 The Open Group |
| 4 | |
| 5 | Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | documentation for any purpose is hereby granted without fee, provided that |
| 7 | the above copyright notice appear in all copies and that both that |
| 8 | copyright notice and this permission notice appear in supporting |
| 9 | documentation. |
| 10 | |
| 11 | The above copyright notice and this permission notice shall be included |
| 12 | in all copies or substantial portions of the Software. |
| 13 | |
| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 16 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 17 | IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | OTHER DEALINGS IN THE SOFTWARE. |
| 21 | |
| 22 | Except as contained in this notice, the name of The Open Group shall |
| 23 | not be used in advertising or otherwise to promote the sale, use or |
| 24 | other dealings in this Software without prior written authorization |
| 25 | from The Open Group. |
| 26 | |
| 27 | */ |
| 28 | |
| 29 | #ifdef HAVE_DIX_CONFIG_H |
| 30 | #include <dix-config.h> |
| 31 | #endif |
| 32 | |
| 33 | #include <X11/X.h> |
| 34 | #include "servermd.h" |
| 35 | #include "misc.h" |
| 36 | #include "mi.h" |
| 37 | #include "scrnintstr.h" |
| 38 | #include "pixmapstr.h" |
| 39 | #include "dix.h" |
| 40 | #include "miline.h" |
| 41 | #ifdef MITSHM |
| 42 | #include <X11/extensions/shm.h> |
| 43 | #include "shmint.h" |
| 44 | #endif |
| 45 | |
| 46 | /* We use this structure to propogate some information from miScreenInit to |
| 47 | * miCreateScreenResources. miScreenInit allocates the structure, fills it |
| 48 | * in, and puts it into pScreen->devPrivate. miCreateScreenResources |
| 49 | * extracts the info and frees the structure. We could've accomplished the |
| 50 | * same thing by adding fields to the screen structure, but they would have |
| 51 | * ended up being redundant, and would have exposed this mi implementation |
| 52 | * detail to the whole server. |
| 53 | */ |
| 54 | |
| 55 | typedef struct { |
| 56 | pointer pbits; /* pointer to framebuffer */ |
| 57 | int width; /* delta to add to a framebuffer addr to move one row down */ |
| 58 | } miScreenInitParmsRec, *miScreenInitParmsPtr; |
| 59 | |
| 60 | /* this plugs into pScreen->ModifyPixmapHeader */ |
| 61 | Bool |
| 62 | miModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth, |
| 63 | int bitsPerPixel, int devKind, pointer pPixData) |
| 64 | { |
| 65 | if (!pPixmap) |
| 66 | return FALSE; |
| 67 | |
| 68 | /* |
| 69 | * If all arguments are specified, reinitialize everything (including |
| 70 | * validated state). |
| 71 | */ |
| 72 | if ((width > 0) && (height > 0) && (depth > 0) && (bitsPerPixel > 0) && |
| 73 | (devKind > 0) && pPixData) { |
| 74 | pPixmap->drawable.depth = depth; |
| 75 | pPixmap->drawable.bitsPerPixel = bitsPerPixel; |
| 76 | pPixmap->drawable.id = 0; |
| 77 | pPixmap->drawable.x = 0; |
| 78 | pPixmap->drawable.y = 0; |
| 79 | pPixmap->drawable.width = width; |
| 80 | pPixmap->drawable.height = height; |
| 81 | pPixmap->devKind = devKind; |
| 82 | pPixmap->refcnt = 1; |
| 83 | pPixmap->devPrivate.ptr = pPixData; |
| 84 | } |
| 85 | else { |
| 86 | /* |
| 87 | * Only modify specified fields, keeping all others intact. |
| 88 | */ |
| 89 | |
| 90 | if (width > 0) |
| 91 | pPixmap->drawable.width = width; |
| 92 | |
| 93 | if (height > 0) |
| 94 | pPixmap->drawable.height = height; |
| 95 | |
| 96 | if (depth > 0) |
| 97 | pPixmap->drawable.depth = depth; |
| 98 | |
| 99 | if (bitsPerPixel > 0) |
| 100 | pPixmap->drawable.bitsPerPixel = bitsPerPixel; |
| 101 | else if ((bitsPerPixel < 0) && (depth > 0)) |
| 102 | pPixmap->drawable.bitsPerPixel = BitsPerPixel(depth); |
| 103 | |
| 104 | /* |
| 105 | * CAVEAT: Non-SI DDXen may use devKind and devPrivate fields for |
| 106 | * other purposes. |
| 107 | */ |
| 108 | if (devKind > 0) |
| 109 | pPixmap->devKind = devKind; |
| 110 | else if ((devKind < 0) && ((width > 0) || (depth > 0))) |
| 111 | pPixmap->devKind = PixmapBytePad(pPixmap->drawable.width, |
| 112 | pPixmap->drawable.depth); |
| 113 | |
| 114 | if (pPixData) |
| 115 | pPixmap->devPrivate.ptr = pPixData; |
| 116 | } |
| 117 | pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; |
| 118 | return TRUE; |
| 119 | } |
| 120 | |
| 121 | static Bool |
| 122 | miCloseScreen(ScreenPtr pScreen) |
| 123 | { |
| 124 | return ((*pScreen->DestroyPixmap) ((PixmapPtr) pScreen->devPrivate)); |
| 125 | } |
| 126 | |
| 127 | /* With the introduction of pixmap privates, the "screen pixmap" can no |
| 128 | * longer be created in miScreenInit, since all the modules that could |
| 129 | * possibly ask for pixmap private space have not been initialized at |
| 130 | * that time. pScreen->CreateScreenResources is called after all |
| 131 | * possible private-requesting modules have been inited; we create the |
| 132 | * screen pixmap here. |
| 133 | */ |
| 134 | Bool |
| 135 | miCreateScreenResources(ScreenPtr pScreen) |
| 136 | { |
| 137 | miScreenInitParmsPtr pScrInitParms; |
| 138 | pointer value; |
| 139 | |
| 140 | pScrInitParms = (miScreenInitParmsPtr) pScreen->devPrivate; |
| 141 | |
| 142 | /* if width is non-zero, pScreen->devPrivate will be a pixmap |
| 143 | * else it will just take the value pbits |
| 144 | */ |
| 145 | if (pScrInitParms->width) { |
| 146 | PixmapPtr pPixmap; |
| 147 | |
| 148 | /* create a pixmap with no data, then redirect it to point to |
| 149 | * the screen |
| 150 | */ |
| 151 | pPixmap = |
| 152 | (*pScreen->CreatePixmap) (pScreen, 0, 0, pScreen->rootDepth, 0); |
| 153 | if (!pPixmap) |
| 154 | return FALSE; |
| 155 | |
| 156 | if (!(*pScreen->ModifyPixmapHeader) (pPixmap, pScreen->width, |
| 157 | pScreen->height, |
| 158 | pScreen->rootDepth, |
| 159 | BitsPerPixel(pScreen->rootDepth), |
| 160 | PixmapBytePad(pScrInitParms->width, |
| 161 | pScreen->rootDepth), |
| 162 | pScrInitParms->pbits)) |
| 163 | return FALSE; |
| 164 | value = (pointer) pPixmap; |
| 165 | } |
| 166 | else { |
| 167 | value = pScrInitParms->pbits; |
| 168 | } |
| 169 | free(pScreen->devPrivate); /* freeing miScreenInitParmsRec */ |
| 170 | pScreen->devPrivate = value; /* pPixmap or pbits */ |
| 171 | return TRUE; |
| 172 | } |
| 173 | |
| 174 | Bool |
| 175 | miScreenDevPrivateInit(ScreenPtr pScreen, int width, pointer pbits) |
| 176 | { |
| 177 | miScreenInitParmsPtr pScrInitParms; |
| 178 | |
| 179 | /* Stash pbits and width in a short-lived miScreenInitParmsRec attached |
| 180 | * to the screen, until CreateScreenResources can put them in the |
| 181 | * screen pixmap. |
| 182 | */ |
| 183 | pScrInitParms = malloc(sizeof(miScreenInitParmsRec)); |
| 184 | if (!pScrInitParms) |
| 185 | return FALSE; |
| 186 | pScrInitParms->pbits = pbits; |
| 187 | pScrInitParms->width = width; |
| 188 | pScreen->devPrivate = (pointer) pScrInitParms; |
| 189 | return TRUE; |
| 190 | } |
| 191 | |
| 192 | static PixmapPtr |
| 193 | miGetScreenPixmap(ScreenPtr pScreen) |
| 194 | { |
| 195 | return (PixmapPtr) (pScreen->devPrivate); |
| 196 | } |
| 197 | |
| 198 | static void |
| 199 | miSetScreenPixmap(PixmapPtr pPix) |
| 200 | { |
| 201 | if (pPix) |
| 202 | pPix->drawable.pScreen->devPrivate = (pointer) pPix; |
| 203 | } |
| 204 | |
| 205 | Bool |
| 206 | miScreenInit(ScreenPtr pScreen, pointer pbits, /* pointer to screen bits */ |
| 207 | int xsize, int ysize, /* in pixels */ |
| 208 | int dpix, int dpiy, /* dots per inch */ |
| 209 | int width, /* pixel width of frame buffer */ |
| 210 | int rootDepth, /* depth of root window */ |
| 211 | int numDepths, /* number of depths supported */ |
| 212 | DepthRec * depths, /* supported depths */ |
| 213 | VisualID rootVisual, /* root visual */ |
| 214 | int numVisuals, /* number of visuals supported */ |
| 215 | VisualRec * visuals /* supported visuals */ |
| 216 | ) |
| 217 | { |
| 218 | pScreen->width = xsize; |
| 219 | pScreen->height = ysize; |
| 220 | pScreen->mmWidth = (xsize * 254 + dpix * 5) / (dpix * 10); |
| 221 | pScreen->mmHeight = (ysize * 254 + dpiy * 5) / (dpiy * 10); |
| 222 | pScreen->numDepths = numDepths; |
| 223 | pScreen->rootDepth = rootDepth; |
| 224 | pScreen->allowedDepths = depths; |
| 225 | pScreen->rootVisual = rootVisual; |
| 226 | /* defColormap */ |
| 227 | pScreen->minInstalledCmaps = 1; |
| 228 | pScreen->maxInstalledCmaps = 1; |
| 229 | pScreen->backingStoreSupport = NotUseful; |
| 230 | pScreen->saveUnderSupport = NotUseful; |
| 231 | /* whitePixel, blackPixel */ |
| 232 | pScreen->ModifyPixmapHeader = miModifyPixmapHeader; |
| 233 | pScreen->CreateScreenResources = miCreateScreenResources; |
| 234 | pScreen->GetScreenPixmap = miGetScreenPixmap; |
| 235 | pScreen->SetScreenPixmap = miSetScreenPixmap; |
| 236 | pScreen->numVisuals = numVisuals; |
| 237 | pScreen->visuals = visuals; |
| 238 | if (width) { |
| 239 | #ifdef MITSHM |
| 240 | ShmRegisterFbFuncs(pScreen); |
| 241 | #endif |
| 242 | pScreen->CloseScreen = miCloseScreen; |
| 243 | } |
| 244 | /* else CloseScreen */ |
| 245 | /* QueryBestSize, SaveScreen, GetImage, GetSpans */ |
| 246 | pScreen->SourceValidate = (SourceValidateProcPtr) 0; |
| 247 | /* CreateWindow, DestroyWindow, PositionWindow, ChangeWindowAttributes */ |
| 248 | /* RealizeWindow, UnrealizeWindow */ |
| 249 | pScreen->ValidateTree = miValidateTree; |
| 250 | pScreen->PostValidateTree = (PostValidateTreeProcPtr) 0; |
| 251 | pScreen->WindowExposures = miWindowExposures; |
| 252 | /* CopyWindow */ |
| 253 | pScreen->ClearToBackground = miClearToBackground; |
| 254 | pScreen->ClipNotify = (ClipNotifyProcPtr) 0; |
| 255 | pScreen->RestackWindow = (RestackWindowProcPtr) 0; |
| 256 | /* CreatePixmap, DestroyPixmap */ |
| 257 | /* RealizeFont, UnrealizeFont */ |
| 258 | /* CreateGC */ |
| 259 | /* CreateColormap, DestroyColormap, InstallColormap, UninstallColormap */ |
| 260 | /* ListInstalledColormaps, StoreColors, ResolveColor */ |
| 261 | /* BitmapToRegion */ |
| 262 | pScreen->SendGraphicsExpose = miSendGraphicsExpose; |
| 263 | pScreen->BlockHandler = (ScreenBlockHandlerProcPtr) NoopDDA; |
| 264 | pScreen->WakeupHandler = (ScreenWakeupHandlerProcPtr) NoopDDA; |
| 265 | pScreen->MarkWindow = miMarkWindow; |
| 266 | pScreen->MarkOverlappedWindows = miMarkOverlappedWindows; |
| 267 | pScreen->MoveWindow = miMoveWindow; |
| 268 | pScreen->ResizeWindow = miSlideAndSizeWindow; |
| 269 | pScreen->GetLayerWindow = miGetLayerWindow; |
| 270 | pScreen->HandleExposures = miHandleValidateExposures; |
| 271 | pScreen->ReparentWindow = (ReparentWindowProcPtr) 0; |
| 272 | pScreen->ChangeBorderWidth = miChangeBorderWidth; |
| 273 | pScreen->SetShape = miSetShape; |
| 274 | pScreen->MarkUnrealizedWindow = miMarkUnrealizedWindow; |
| 275 | |
| 276 | miSetZeroLineBias(pScreen, DEFAULTZEROLINEBIAS); |
| 277 | |
| 278 | return miScreenDevPrivateInit(pScreen, width, pbits); |
| 279 | } |
| 280 | |
| 281 | DevPrivateKeyRec miZeroLineScreenKeyRec; |
| 282 | |
| 283 | void |
| 284 | miSetZeroLineBias(ScreenPtr pScreen, unsigned int bias) |
| 285 | { |
| 286 | if (!dixRegisterPrivateKey(&miZeroLineScreenKeyRec, PRIVATE_SCREEN, 0)) |
| 287 | return; |
| 288 | |
| 289 | dixSetPrivate(&pScreen->devPrivates, miZeroLineScreenKey, |
| 290 | (unsigned long *) (unsigned long) bias); |
| 291 | } |