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Bug 243215: use proper API calls instead of the registry to obtain system parameters, patch by Ryan Jones <sciguyryan+bugzilla@gmail.com>, r+sr=roc

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This commit is contained in:
gavin%gavinsharp.com 2006-10-10 13:18:25 +00:00
parent 48d4604b09
commit 73cb633be3
1 changed files with 19 additions and 68 deletions
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87
widget/src/windows/nsLookAndFeel.cpp
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@ -22,6 +22,7 @@
* Contributor(s):
* Michael Lowe <michael.lowe@bigfoot.com>
* Jens Bannmann <jens.b@web.de>
* Ryan Jones <sciguyryan@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -50,6 +51,9 @@
#ifndef SPI_GETFLATMENU
#define SPI_GETFLATMENU 0x1022
#endif
#ifndef SPI_GETMENUSHOWDELAY
#define SPI_GETMENUSHOWDELAY 106
#endif //SPI_GETMENUSHOWDELAY
#ifndef WINCE
typedef UINT (CALLBACK *SHAppBarMessagePtr)(DWORD, PAPPBARDATA);
@ -57,6 +61,15 @@ SHAppBarMessagePtr gSHAppBarMessage = NULL;
static HINSTANCE gShell32DLLInst = NULL;
#endif
static PRInt32 GetSystemParam(long flag, PRInt32 def) {
#ifndef WINCE
return def;
#else
DWORD value;
return SystemParametersInfo(flag, 0, &value, 0) ? value : def;
#endif
}
nsLookAndFeel::nsLookAndFeel() : nsXPLookAndFeel()
{
#ifndef WINCE
@ -356,81 +369,19 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
aMetric = 1;
break;
case eMetric_SubmenuDelay:
{
static PRInt32 sSubmenuDelay = -1;
if (sSubmenuDelay == -1) {
HKEY key;
char value[100];
DWORD length, type;
LONG result;
sSubmenuDelay = 300;
#ifndef WINCE
result = ::RegOpenKeyEx(HKEY_CURRENT_USER,
"Control Panel\\Desktop", 0, KEY_READ, &key);
if (result == ERROR_SUCCESS) {
length = sizeof(value);
result = ::RegQueryValueEx(key, "MenuShowDelay",
NULL, &type, (LPBYTE)&value, &length);
::RegCloseKey(key);
if (result == ERROR_SUCCESS) {
PRInt32 errorCode;
nsString str; str.AssignWithConversion(value);
PRInt32 submenuDelay = str.ToInteger(&errorCode);
if (errorCode == NS_OK) {
sSubmenuDelay = submenuDelay;
}
}
}
#endif
}
aMetric = sSubmenuDelay;
}
// This will default to the Window's default
// (400ms) on error.
aMetric = GetSystemParam(SPI_GETMENUSHOWDELAY, 400);
break;
case eMetric_MenusCanOverlapOSBar:
// we want XUL popups to be able to overlap the task bar.
aMetric = 1;
break;
case eMetric_DragFullWindow:
{
static PRInt32 sDragFullWindow = -1;
#ifndef WINCE
if (sDragFullWindow == -1) {
HKEY key;
char value[100];
DWORD length, type;
LONG result;
result = ::RegOpenKeyEx(HKEY_CURRENT_USER,
"Control Panel\\Desktop", 0, KEY_READ, &key);
if (result == ERROR_SUCCESS) {
length = sizeof(value);
result = ::RegQueryValueEx(key, "DragFullWindows",
NULL, &type, (LPBYTE)&value, &length);
::RegCloseKey(key);
if (result == ERROR_SUCCESS) {
PRInt32 errorCode;
nsString str; str.AssignWithConversion(value);
sDragFullWindow = str.ToInteger(&errorCode);
}
}
}
#endif
aMetric = sDragFullWindow ? 1 : 0;
}
// This will default to the Window's default
// (on by default) on error.
aMetric = GetSystemParam(SPI_GETDRAGFULLWINDOWS, 1);
break;
#ifndef WINCE
case eMetric_DragThresholdX:
// The system metric is the number of pixels at which a drag should