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#5000: added "browser.screen_resolution" pref

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git-svn-id: svn://10.0.0.236/trunk@29602 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
pierre%netscape.com
1999-04-28 00:20:58 +00:00
parent 57c5370ad9
commit b702b22ac9
5 changed files with 78 additions and 8 deletions
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36
mozilla/widget/src/mac/nsDeviceContextMac.cpp
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@@ -28,9 +28,11 @@
#include <Resources.h>
#include "il_util.h"
#include <FixMath.h>
#include "nsIPref.h"
#include "nsIServiceManager.h"
const PRUint32 nsDeviceContextMac::kPixelsPerInch = 96;
PRUint32 nsDeviceContextMac::mPixelsPerInch = 96;
static NS_DEFINE_IID(kDeviceContextIID, NS_IDEVICE_CONTEXT_IID);
@@ -72,7 +74,7 @@ double pix_inch;
thegd = ::GetMainDevice();
thepix = (**thegd).gdPMap; // dereferenced handle: don't move memory below!
mDepth = (**thepix).pixelSize;
pix_inch = kPixelsPerInch; //Fix2X((**thepix).hRes);
pix_inch = GetScreenResolution(); //Fix2X((**thepix).hRes);
mTwipsToPixels = pix_inch/(float)NSIntPointsToTwips(72);
mPixelsToTwips = 1.0f/mTwipsToPixels;
@@ -325,6 +327,7 @@ NS_IMETHODIMP nsDeviceContextMac::GetDeviceSurfaceDimensions(PRInt32 &aWidth, PR
}
#pragma mark -
//------------------------------------------------------------------------
NS_IMETHODIMP nsDeviceContextMac::GetDeviceContextFor(nsIDeviceContextSpec *aDevice,nsIDeviceContext *&aContext)
@@ -561,3 +564,32 @@ nsresult nsDeviceContextMac::CreateFontAliasTable()
}
return result;
}
#pragma mark -
//------------------------------------------------------------------------
//
static NS_DEFINE_IID(kIPrefIID, NS_IPREF_IID);
static NS_DEFINE_CID(kPrefCID, NS_PREF_CID);
PRUint32 nsDeviceContextMac::GetScreenResolution()
{
static PRBool initialized = PR_FALSE;
if (initialized)
return mPixelsPerInch;
initialized = PR_TRUE;
nsIPref* prefs;
nsresult rv = nsServiceManager::GetService(kPrefCID, kIPrefIID, (nsISupports**)&prefs);
if (NS_SUCCEEDED(rv) && prefs) {
PRInt32 intVal;
if (NS_SUCCEEDED(prefs->GetIntPref("browser.screen_resolution", &intVal))) {
mPixelsPerInch = intVal;
}
nsServiceManager::ReleaseService(kPrefCID, prefs);
}
return mPixelsPerInch;
}