| 1 | /* |
| 2 | *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved. |
| 3 | * |
| 4 | *Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files (the |
| 6 | *"Software"), to deal in the Software without restriction, including |
| 7 | *without limitation the rights to use, copy, modify, merge, publish, |
| 8 | *distribute, sublicense, and/or sell copies of the Software, and to |
| 9 | *permit persons to whom the Software is furnished to do so, subject to |
| 10 | *the following conditions: |
| 11 | * |
| 12 | *The above copyright notice and this permission notice shall be |
| 13 | *included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 18 | *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR |
| 19 | *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF |
| 20 | *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 21 | *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | *Except as contained in this notice, the name of the XFree86 Project |
| 24 | *shall not be used in advertising or otherwise to promote the sale, use |
| 25 | *or other dealings in this Software without prior written authorization |
| 26 | *from the XFree86 Project. |
| 27 | * |
| 28 | * Authors: Kensuke Matsuzaki |
| 29 | * Harold L Hunt II |
| 30 | */ |
| 31 | |
| 32 | #ifdef HAVE_XWIN_CONFIG_H |
| 33 | #include <xwin-config.h> |
| 34 | #endif |
| 35 | |
| 36 | #include "win.h" |
| 37 | |
| 38 | /* |
| 39 | * winSetShapeMultiWindow - See Porting Layer Definition - p. 42 |
| 40 | */ |
| 41 | |
| 42 | void |
| 43 | winSetShapeMultiWindow(WindowPtr pWin, int kind) |
| 44 | { |
| 45 | ScreenPtr pScreen = pWin->drawable.pScreen; |
| 46 | |
| 47 | winScreenPriv(pScreen); |
| 48 | |
| 49 | #if CYGMULTIWINDOW_DEBUG |
| 50 | ErrorF("winSetShapeMultiWindow - pWin: %08x kind: %i\n", pWin, kind); |
| 51 | #endif |
| 52 | |
| 53 | WIN_UNWRAP(SetShape); |
| 54 | (*pScreen->SetShape) (pWin, kind); |
| 55 | WIN_WRAP(SetShape, winSetShapeMultiWindow); |
| 56 | |
| 57 | /* Update the Windows window's shape */ |
| 58 | winReshapeMultiWindow(pWin); |
| 59 | winUpdateRgnMultiWindow(pWin); |
| 60 | |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * winUpdateRgnMultiWindow - Local function to update a Windows window region |
| 66 | */ |
| 67 | |
| 68 | void |
| 69 | winUpdateRgnMultiWindow(WindowPtr pWin) |
| 70 | { |
| 71 | SetWindowRgn(winGetWindowPriv(pWin)->hWnd, |
| 72 | winGetWindowPriv(pWin)->hRgn, TRUE); |
| 73 | |
| 74 | /* The system now owns the region specified by the region handle and will delete it when it is no longer needed. */ |
| 75 | winGetWindowPriv(pWin)->hRgn = NULL; |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * winReshapeMultiWindow - Computes the composite clipping region for a window |
| 80 | */ |
| 81 | |
| 82 | void |
| 83 | winReshapeMultiWindow(WindowPtr pWin) |
| 84 | { |
| 85 | int nRects; |
| 86 | RegionRec rrNewShape; |
| 87 | BoxPtr pShape, pRects, pEnd; |
| 88 | HRGN hRgn, hRgnRect; |
| 89 | |
| 90 | winWindowPriv(pWin); |
| 91 | |
| 92 | #if CYGDEBUG |
| 93 | winDebug("winReshape ()\n"); |
| 94 | #endif |
| 95 | |
| 96 | /* Bail if the window is the root window */ |
| 97 | if (pWin->parent == NULL) |
| 98 | return; |
| 99 | |
| 100 | /* Bail if the window is not top level */ |
| 101 | if (pWin->parent->parent != NULL) |
| 102 | return; |
| 103 | |
| 104 | /* Bail if Windows window handle is invalid */ |
| 105 | if (pWinPriv->hWnd == NULL) |
| 106 | return; |
| 107 | |
| 108 | /* Free any existing window region stored in the window privates */ |
| 109 | if (pWinPriv->hRgn != NULL) { |
| 110 | DeleteObject(pWinPriv->hRgn); |
| 111 | pWinPriv->hRgn = NULL; |
| 112 | } |
| 113 | |
| 114 | /* Bail if the window has no bounding region defined */ |
| 115 | if (!wBoundingShape(pWin)) |
| 116 | return; |
| 117 | |
| 118 | RegionNull(&rrNewShape); |
| 119 | RegionCopy(&rrNewShape, wBoundingShape(pWin)); |
| 120 | RegionTranslate(&rrNewShape, pWin->borderWidth, pWin->borderWidth); |
| 121 | |
| 122 | nRects = RegionNumRects(&rrNewShape); |
| 123 | pShape = RegionRects(&rrNewShape); |
| 124 | |
| 125 | /* Don't do anything if there are no rectangles in the region */ |
| 126 | if (nRects > 0) { |
| 127 | RECT rcClient; |
| 128 | RECT rcWindow; |
| 129 | int iOffsetX, iOffsetY; |
| 130 | |
| 131 | /* Get client rectangle */ |
| 132 | if (!GetClientRect(pWinPriv->hWnd, &rcClient)) { |
| 133 | ErrorF("winReshape - GetClientRect failed, bailing: %d\n", |
| 134 | (int) GetLastError()); |
| 135 | return; |
| 136 | } |
| 137 | |
| 138 | /* Translate client rectangle coords to screen coords */ |
| 139 | /* NOTE: Only transforms top and left members */ |
| 140 | ClientToScreen(pWinPriv->hWnd, (LPPOINT) &rcClient); |
| 141 | |
| 142 | /* Get window rectangle */ |
| 143 | if (!GetWindowRect(pWinPriv->hWnd, &rcWindow)) { |
| 144 | ErrorF("winReshape - GetWindowRect failed, bailing: %d\n", |
| 145 | (int) GetLastError()); |
| 146 | return; |
| 147 | } |
| 148 | |
| 149 | /* Calculate offset from window upper-left to client upper-left */ |
| 150 | iOffsetX = rcClient.left - rcWindow.left; |
| 151 | iOffsetY = rcClient.top - rcWindow.top; |
| 152 | |
| 153 | /* Create initial Windows region for title bar */ |
| 154 | /* FIXME: Mean, nasty, ugly hack!!! */ |
| 155 | hRgn = CreateRectRgn(0, 0, rcWindow.right, iOffsetY); |
| 156 | if (hRgn == NULL) { |
| 157 | ErrorF("winReshape - Initial CreateRectRgn (%d, %d, %d, %d) " |
| 158 | "failed: %d\n", |
| 159 | 0, 0, (int) rcWindow.right, iOffsetY, (int) GetLastError()); |
| 160 | } |
| 161 | |
| 162 | /* Loop through all rectangles in the X region */ |
| 163 | for (pRects = pShape, pEnd = pShape + nRects; pRects < pEnd; pRects++) { |
| 164 | /* Create a Windows region for the X rectangle */ |
| 165 | hRgnRect = CreateRectRgn(pRects->x1 + iOffsetX, |
| 166 | pRects->y1 + iOffsetY, |
| 167 | pRects->x2 + iOffsetX, |
| 168 | pRects->y2 + iOffsetY); |
| 169 | if (hRgnRect == NULL) { |
| 170 | ErrorF("winReshape - Loop CreateRectRgn (%d, %d, %d, %d) " |
| 171 | "failed: %d\n" |
| 172 | "\tx1: %d x2: %d xOff: %d y1: %d y2: %d yOff: %d\n", |
| 173 | pRects->x1 + iOffsetX, |
| 174 | pRects->y1 + iOffsetY, |
| 175 | pRects->x2 + iOffsetX, |
| 176 | pRects->y2 + iOffsetY, |
| 177 | (int) GetLastError(), |
| 178 | pRects->x1, pRects->x2, iOffsetX, |
| 179 | pRects->y1, pRects->y2, iOffsetY); |
| 180 | } |
| 181 | |
| 182 | /* Merge the Windows region with the accumulated region */ |
| 183 | if (CombineRgn(hRgn, hRgn, hRgnRect, RGN_OR) == ERROR) { |
| 184 | ErrorF("winReshape - CombineRgn () failed: %d\n", |
| 185 | (int) GetLastError()); |
| 186 | } |
| 187 | |
| 188 | /* Delete the temporary Windows region */ |
| 189 | DeleteObject(hRgnRect); |
| 190 | } |
| 191 | |
| 192 | /* Save a handle to the composite region in the window privates */ |
| 193 | pWinPriv->hRgn = hRgn; |
| 194 | } |
| 195 | |
| 196 | RegionUninit(&rrNewShape); |
| 197 | |
| 198 | return; |
| 199 | } |