mirror of
https://github.com/mozilla/gecko-dev.git
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118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsScreenOS2.h"
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nsScreenOS2 :: nsScreenOS2 ( )
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{
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// nothing else to do. I guess we could cache a bunch of information
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// here, but we want to ask the device at runtime in case anything
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// has changed.
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}
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nsScreenOS2 :: ~nsScreenOS2()
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{
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// nothing to see here.
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}
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NS_IMETHODIMP
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nsScreenOS2 :: GetRect(int32_t *outLeft, int32_t *outTop, int32_t *outWidth, int32_t *outHeight)
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{
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LONG alArray[2];
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HPS hps = ::WinGetScreenPS( HWND_DESKTOP);
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HDC hdc = ::GpiQueryDevice (hps);
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::DevQueryCaps(hdc, CAPS_WIDTH, 2, alArray);
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::WinReleasePS(hps);
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*outTop = 0;
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*outLeft = 0;
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*outWidth = alArray[0];
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*outHeight = alArray[1];
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return NS_OK;
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} // GetRect
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NS_IMETHODIMP
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nsScreenOS2 :: GetAvailRect(int32_t *outLeft, int32_t *outTop, int32_t *outWidth, int32_t *outHeight)
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{
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static APIRET rc = 0;
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static BOOL (APIENTRY * pfnQueryDesktopWorkArea)(HWND hwndDesktop, PWRECT pwrcWorkArea) = nullptr;
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GetRect(outLeft, outTop, outWidth, outHeight);
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// This height is different based on whether or not
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// "Show on top of maximed windows" is checked
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LONG lWorkAreaHeight = *outHeight;
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if ( !rc && !pfnQueryDesktopWorkArea )
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{
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HMODULE hmod = 0;
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rc = DosQueryModuleHandle( "PMMERGE", &hmod );
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if ( !rc )
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{
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rc = DosQueryProcAddr( hmod, 5469, nullptr, (PFN*) &pfnQueryDesktopWorkArea ); // WinQueryDesktopWorkArea
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}
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}
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if ( pfnQueryDesktopWorkArea && !rc )
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{
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RECTL rectl;
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pfnQueryDesktopWorkArea( HWND_DESKTOP, &rectl );
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lWorkAreaHeight = rectl.yTop - rectl.yBottom;
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}
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HWND hwndWarpCenter = WinWindowFromID( HWND_DESKTOP, 0x555 );
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if (hwndWarpCenter) {
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/* If "Show on top of maximized windows is checked" */
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if (lWorkAreaHeight != *outHeight) {
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SWP swp;
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WinQueryWindowPos( hwndWarpCenter, &swp );
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if (swp.y != 0) {
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/* WarpCenter is at the top */
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*outTop += swp.cy;
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}
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*outHeight -= swp.cy;
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}
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}
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return NS_OK;
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} // GetAvailRect
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NS_IMETHODIMP
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nsScreenOS2 :: GetPixelDepth(int32_t *aPixelDepth)
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{
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LONG lCap;
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HPS hps = ::WinGetScreenPS( HWND_DESKTOP);
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HDC hdc = ::GpiQueryDevice (hps);
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::DevQueryCaps(hdc, CAPS_COLOR_BITCOUNT, 1, &lCap);
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*aPixelDepth = (int32_t)lCap;
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::WinReleasePS(hps);
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return NS_OK;
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} // GetPixelDepth
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NS_IMETHODIMP
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nsScreenOS2 :: GetColorDepth(int32_t *aColorDepth)
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{
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return GetPixelDepth ( aColorDepth );
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} // GetColorDepth
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