workbench/system/Workbook/workbook_intern.c

   1 /*
   2  * Copyright (C) 2012, The AROS Development Team
   3  * All right reserved.
   4  * Author: Jason S. McMullan <jason.mcmullan@gmail.com>
   5  *
   6  * Licensed under the AROS PUBLIC LICENSE (APL) Version 1.1
   7  */
   8 #include <proto/graphics.h>
   9 #include <proto/layers.h>
  10
  11 #include "workbook_intern.h"
  12
  13 struct Region *wbClipWindow(struct WorkbookBase *wb, struct Window *win)
  14 {
  15     struct Region *clip;
  16
  17     /* Install new clip region */
  18     if ((clip = NewRegion())) {
  19         struct Rectangle rect = {
  20                 .MinX = win->BorderLeft,
  21                 .MinY = win->BorderTop,
  22                 .MaxX = win->Width - win->BorderRight - 1,
  23                 .MaxY = win->Height - win->BorderBottom - 1,
  24         };
  25         if (!OrRectRegion(clip, &rect)) {
  26                 DisposeRegion(clip);
  27                 clip = NULL;
  28         }
  29     }
  30
  31     /* Install new clip region */
  32     return InstallClipRegion(win->WLayer, clip);
  33 }
  34
  35 void wbUnclipWindow(struct WorkbookBase *wb, struct Window *win, struct Region *clip)
  36 {
  37     clip = InstallClipRegion(win->WLayer, clip);
  38     if (clip)
  39             DisposeRegion(clip);
  40 }