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Implement XMillimeter and YMillimeter calculation, it not 100% correct for I assume the monitor DPI is always 72DPI

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svn path=/trunk/; revision=20900
This commit is contained in:
Magnus Olsen 2006-01-15 20:25:53 +00:00
parent e129f72183
commit 1a6b709e32
1 changed files with 57 additions and 3 deletions
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60
reactos/drivers/video/miniport/vbe/vbemp.c
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@ -875,7 +875,8 @@ VBEQueryMode(
ULONG VideoModeId)
{
PVBE_MODEINFO VBEMode = &DeviceExtension->ModeInfo[VideoModeId];
INT dwCalc;
VideoMode->Length = sizeof(VIDEO_MODE_INFORMATION);
VideoMode->ModeIndex = VideoModeId;
VideoMode->VisScreenWidth = VBEMode->XResolution;
@ -887,8 +888,61 @@ VBEQueryMode(
VideoMode->NumberOfPlanes = VBEMode->NumberOfPlanes;
VideoMode->BitsPerPlane = VBEMode->BitsPerPixel / VBEMode->NumberOfPlanes;
VideoMode->Frequency = 1;
VideoMode->XMillimeter = 0; /* FIXME */
VideoMode->YMillimeter = 0; /* FIXME */
/* FIXME
* how do I get the dpi from the monitor ??, for now
* I (GreatLord) will assume 72dpi for the monitor, few monitor can have more or less 72dpi
* you need pay alot of money to get one, that have more that 72dpi.
*
* math inch = pixel / 72dpi
* math Millimeter = pixel / (72dpi / 2.571428571) * 10
*
*/
VideoMode->XMillimeter = VBEMode->XResolution / 28;
dwCalc = VBEMode->XResolution % 28;
if ((dwCalc>=3) && (dwCalc<=5))
VideoMode->XMillimeter +=1;
else if ((dwCalc>=6) && (dwCalc<=8))
VideoMode->XMillimeter +=2;
else if ((dwCalc>=9) && (dwCalc<=11))
VideoMode->XMillimeter +=3;
else if ((dwCalc>=12) && (dwCalc<=13))
VideoMode->XMillimeter +=4;
else if ((dwCalc>=15) && (dwCalc<=16))
VideoMode->XMillimeter +=5;
else if ((dwCalc>=17) && (dwCalc<=19))
VideoMode->XMillimeter +=6;
else if ((dwCalc>=20) && (dwCalc<=22))
VideoMode->XMillimeter +=7;
else if ((dwCalc>=23) && (dwCalc<=25))
VideoMode->XMillimeter +=8;
else if ((dwCalc>=26) && (dwCalc<=27))
VideoMode->XMillimeter +=9;
VideoMode->YMillimeter = VBEMode->YResolution / 28;
dwCalc = VBEMode->YResolution % 28;
if ((dwCalc>=3) && (dwCalc<=5))
VideoMode->YMillimeter +=1;
else if ((dwCalc>=6) && (dwCalc<=8))
VideoMode->YMillimeter +=2;
else if ((dwCalc>=9) && (dwCalc<=11))
VideoMode->YMillimeter +=3;
else if ((dwCalc>=12) && (dwCalc<=13))
VideoMode->YMillimeter +=4;
else if ((dwCalc>=15) && (dwCalc<=16))
VideoMode->YMillimeter +=5;
else if ((dwCalc>=17) && (dwCalc<=19))
VideoMode->YMillimeter +=6;
else if ((dwCalc>=20) && (dwCalc<=22))
VideoMode->YMillimeter +=7;
else if ((dwCalc>=23) && (dwCalc<=25))
VideoMode->YMillimeter +=8;
else if ((dwCalc>=26) && (dwCalc<=27))
VideoMode->YMillimeter +=9;
if (VBEMode->BitsPerPixel > 8)
{
/*