diff options
Diffstat (limited to 'dix/window.c')
| -rw-r--r-- | dix/window.c | 242 |
1 files changed, 241 insertions, 1 deletions
diff --git a/dix/window.c b/dix/window.c index e33140dd4..604af384d 100644 --- a/dix/window.c +++ b/dix/window.c @@ -110,6 +110,7 @@ Equipment Corporation. #include "validate.h" #include "windowstr.h" #include "input.h" +#include "inputstr.h" #include "resource.h" #include "colormapst.h" #include "cursorstr.h" @@ -135,12 +136,21 @@ Equipment Corporation. * GetWindowAttributes, DeleteWindow, DestroySubWindows, * HandleSaveSet, ReparentWindow, MapWindow, MapSubWindows, * UnmapWindow, UnmapSubWindows, ConfigureWindow, CirculateWindow, - * + * ChangeWindowDeviceCursor ******/ static unsigned char _back_lsb[4] = {0x88, 0x22, 0x44, 0x11}; static unsigned char _back_msb[4] = {0x11, 0x44, 0x22, 0x88}; +static Bool WindowParentHasDeviceCursor(WindowPtr pWin, + DeviceIntPtr pDev, + CursorPtr pCurs); +static Bool +WindowSeekDeviceCursor(WindowPtr pWin, + DeviceIntPtr pDev, + DevCursNodePtr* pNode, + DevCursNodePtr* pPrev); + _X_EXPORT int screenIsSaved = SCREEN_SAVER_OFF; _X_EXPORT ScreenSaverStuffRec savedScreenInfo[MAXSCREENS]; @@ -440,6 +450,7 @@ CreateRootWindow(ScreenPtr pScreen) #endif #ifdef XINPUT pWin->optional->inputMasks = NULL; + pWin->optional->deviceCursors = NULL; #endif pWin->optional->colormap = pScreen->defColormap; pWin->optional->visual = pScreen->rootVisual; @@ -3639,6 +3650,17 @@ CheckWindowOptionalNeed (register WindowPtr w) if (optional->inputMasks != NULL) return; #endif + if (optional->deviceCursors != NULL) + { + DevCursNodePtr pNode = optional->deviceCursors; + while(pNode) + { + if (pNode->cursor != None) + return; + pNode = pNode->next; + } + } + parentOptional = FindWindowWithOptional(w)->optional; if (optional->visual != parentOptional->visual) return; @@ -3683,6 +3705,7 @@ MakeWindowOptional (register WindowPtr pWin) #endif #ifdef XINPUT optional->inputMasks = NULL; + optional->deviceCursors = NULL; #endif parentOptional = FindWindowWithOptional(pWin)->optional; optional->visual = parentOptional->visual; @@ -3731,10 +3754,227 @@ DisposeWindowOptional (register WindowPtr pWin) } else pWin->cursorIsNone = TRUE; + + if (pWin->optional->deviceCursors) + { + DevCursorList pList; + DevCursorList pPrev; + pList = pWin->optional->deviceCursors; + while(pList) + { + if (pList->cursor) + FreeCursor(pList->cursor, (XID)0); + pPrev = pList; + pList = pList->next; + xfree(pPrev); + } + pWin->optional->deviceCursors = NULL; + } + xfree (pWin->optional); pWin->optional = NULL; } +/* + * Changes the cursor struct for the given device and the given window. + * A cursor that does not have a device cursor set will use whatever the + * standard cursor is for the window. If all devices have a cursor set, + * changing the window cursor (e.g. using XDefineCursor()) will not have any + * visible effect. Only when one of the device cursors is set to None again, + * this device's cursor will display the changed standard cursor. + * + * CursorIsNone of the window struct is NOT modified if you set a device + * cursor. + * + * Assumption: If there is a node for a device in the list, the device has a + * cursor. If the cursor is set to None, it is inherited by the parent. + */ +int ChangeWindowDeviceCursor(register WindowPtr pWin, + DeviceIntPtr pDev, + CursorPtr pCursor) +{ + DevCursNodePtr pNode, pPrev; + CursorPtr pOldCursor = NULL; + ScreenPtr pScreen; + WindowPtr pChild; + + if (!pWin->optional && !MakeWindowOptional(pWin)) + return BadAlloc; + + /* 1) Check if window has device cursor set + * Yes: 1.1) swap cursor with given cursor if parent does not have same + * cursor, free old cursor + * 1.2) free old cursor, use parent cursor + * No: 1.1) add node to beginning of list. + * 1.2) add cursor to node if parent does not have same cursor + * 1.3) use parent cursor if parent does not have same cursor + * 2) Patch up children if child has a devcursor + * 2.1) if child has cursor None, it inherited from parent, set to old + * cursor + * 2.2) if child has same cursor as new cursor, remove and set to None + */ + + pScreen = pWin->drawable.pScreen; + + if (WindowSeekDeviceCursor(pWin, pDev, &pNode, &pPrev)) + { + /* has device cursor */ + + if (pNode->cursor == pCursor) + return Success; + + pOldCursor = pNode->cursor; + + if (!pCursor) /* remove from list */ + { + pPrev->next = pNode->next; + xfree(pNode); + } + + } else + { + /* no device cursor yet */ + DevCursNodePtr pNewNode; + + if (!pCursor) + return Success; + + pNewNode = (DevCursNodePtr)xalloc(sizeof(DevCursNodeRec)); + pNewNode->dev = pDev; + pNewNode->next = pWin->optional->deviceCursors; + pWin->optional->deviceCursors = pNewNode; + pNode = pNewNode; + + } + + if (pCursor && WindowParentHasDeviceCursor(pWin, pDev, pCursor)) + pNode->cursor = None; + else + { + pNode->cursor = pCursor; + pCursor->refcnt++; + } + + pNode = pPrev = NULL; + /* fix up children */ + for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib) + { + if (WindowSeekDeviceCursor(pChild, pDev, &pNode, &pPrev)) + { + if (pNode->cursor == None) /* inherited from parent */ + { + pNode->cursor = pOldCursor; + pOldCursor->refcnt++; + } else if (pNode->cursor == pCursor) + { + pNode->cursor = None; + FreeCursor(pCursor, (Cursor)0); /* fix up refcnt */ + } + } + } + + if (pWin->realized) + WindowHasNewCursor(pWin); + + if (pOldCursor) + FreeCursor(pOldCursor, (Cursor)0); + + /* FIXME: We SHOULD check for an error value here XXX + (comment taken from ChangeWindowAttributes) */ + (*pScreen->ChangeWindowAttributes)(pWin, CWCursor); + + return Success; +} + +/* Get device cursor for given device or None if none is set */ +CursorPtr WindowGetDeviceCursor(WindowPtr pWin, DeviceIntPtr pDev) +{ + DevCursorList pList; + + if (!pWin->optional || !pWin->optional->deviceCursors) + return NULL; + + pList = pWin->optional->deviceCursors; + + while(pList) + { + if (pList->dev == pDev) + { + if (pList->cursor == None) /* inherited from parent */ + return WindowGetDeviceCursor(pWin->parent, pDev); + else + return pList->cursor; + } + pList = pList->next; + } + return NULL; +} + +/* Searches for a DevCursorNode for the given window and device. If one is + * found, return True and set pNode and pPrev to the node and to the node + * before the node respectively. Otherwise return False. + */ +static Bool +WindowSeekDeviceCursor(WindowPtr pWin, + DeviceIntPtr pDev, + DevCursNodePtr* pNode, + DevCursNodePtr* pPrev) +{ + DevCursorList pList; + + if (!pWin->optional) + return FALSE; + + pList = pWin->optional->deviceCursors; + while(pList) + { + if (pList->next) + { + if (pList->next->dev == pDev) + { + *pNode = pList->next; + *pPrev = pList; + return TRUE; + } + } + pList = pList->next; + } + return FALSE; +} + +/* Return True if a parent has the same device cursor set or False if + * otherwise + */ +static Bool +WindowParentHasDeviceCursor(WindowPtr pWin, + DeviceIntPtr pDev, + CursorPtr pCursor) +{ + WindowPtr pParent; + DevCursNodePtr pParentNode, pParentPrev; + + pParent = pWin->parent; + while(pParent) + { + if (WindowSeekDeviceCursor(pParent, pDev, + &pParentNode, &pParentPrev)) + { + /* if there is a node in the list, the win has a dev cursor */ + if (!pParentNode->cursor) /* inherited. loop needs to cont. */ + { + } else if (pParentNode->cursor == pCursor) /* inherit */ + return TRUE; + else /* different cursor */ + return FALSE; + } + else + /* parent does not have a device cursor for our device */ + return FALSE; + } + return FALSE; +} + + #ifndef NOLOGOHACK static void DrawLogo(WindowPtr pWin) |