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{
This file is part of the PTCPas framebuffer library
Copyright (C) 2012 Nikolay Nikolov (nickysn@users.sourceforge.net)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version
with the following modification:
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,and
to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a
module which is not derived from or based on this library. If you modify
this library, you may extend this exception to your version of the library,
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
{$ifdef VER2_6}
{ constants moved to the windows unit in fpc trunk }
const
DISP_CHANGE_BADPARAM = -5;
DISP_CHANGE_BADDUALVIEW = -6;
DM_POSITION = $00000020;
DM_NUP = $00000040;
DM_PANNINGWIDTH = $08000000;
DM_PANNINGHEIGHT = $10000000;
DMDFO_DEFAULT = 0;
DMDFO_STRETCH = 1;
DMDFO_CENTER = 2;
{$endif VER2_6}
constructor TWin32ModeSetter.Create;
begin
SetupModeList;
end;
procedure TWin32ModeSetter.Open(AWidth, AHeight: Integer; AFormat: IPTCFormat);
var
dm: TDEVMODE;
begin
FillChar(dm, SizeOf(dm), 0);
dm.dmSize := SizeOf(dm);
dm.dmPelsWidth := AWidth;
dm.dmPelsHeight := AHeight;
dm.dmBitsPerPel := AFormat.Bits;
dm.dmFields := DM_BITSPERPEL or DM_PELSWIDTH or DM_PELSHEIGHT;
DispChangeCheck(ChangeDisplaySettings(@dm, CDS_FULLSCREEN));
FillChar(FChosenMode, SizeOf(FChosenMode), 0);
FChosenMode.dmSize := SizeOf(FChosenMode);
FChosenMode.dmDriverExtra := 0;
if not EnumDisplaySettings(nil, ENUM_CURRENT_SETTINGS, @FChosenMode) then
raise TPTCError.Create('EnumDisplaySettings(ENUM_CURRENT_SETTINGS) failed after mode set');
FInMode := True;
FOpen := True;
end;
procedure TWin32ModeSetter.Close;
begin
FOpen := False;
if not FInMode then
exit;
DispChangeCheck(ChangeDisplaySettings(nil, 0));
FInMode := False;
end;
procedure TWin32ModeSetter.Save;
begin
LOG('saving desktop');
end;
procedure TWin32ModeSetter.Restore;
begin
LOG('restoring desktop');
end;
procedure TWin32ModeSetter.Enter;
begin
LOG('entering mode');
if not FInMode then
begin
DispChangeCheck(ChangeDisplaySettings(@FChosenMode, CDS_FULLSCREEN));
FInMode := True;
end;
end;
procedure TWin32ModeSetter.Leave;
begin
LOG('leaving mode');
if FInMode then
begin
DispChangeCheck(ChangeDisplaySettings(nil, 0));
FInMode := False;
end;
end;
procedure TWin32ModeSetter.SetupModeList;
var
dm: TDEVMODE;
I: Integer;
ModeExists: Boolean;
begin
LOG('getting list of display modes');
SetLength(FModes, 0);
I := 0;
repeat
FillChar(dm, SizeOf(dm), 0);
dm.dmSize := SizeOf(dm);
dm.dmDriverExtra := 0;
ModeExists := EnumDisplaySettings(nil, I, @dm);
if ModeExists then
begin
LogDevMode(dm);
LOG(IntToStr(dm.dmPelsWidth) + 'x' + IntToStr(dm.dmPelsHeight) + 'x' + IntToStr(dm.dmBitsPerPel) + ' ' + IntToStr(dm.dmDisplayFrequency) + ' Hz');
{todo: add to FModes list...}
Inc(I);
end;
until not ModeExists;
LOG('done getting the list of modes');
end;
procedure TWin32ModeSetter.DispChangeCheck(ADispChangeResult: LONG);
function DispChangeResult2String(ADispChangeResult: LONG): string;
begin
case ADispChangeResult of
DISP_CHANGE_SUCCESSFUL: Result := 'DISP_CHANGE_SUCCESSFUL';
DISP_CHANGE_BADDUALVIEW: Result := 'DISP_CHANGE_BADDUALVIEW';
DISP_CHANGE_BADFLAGS: Result := 'DISP_CHANGE_BADFLAGS';
DISP_CHANGE_BADMODE: Result := 'DISP_CHANGE_BADMODE';
DISP_CHANGE_BADPARAM: Result := 'DISP_CHANGE_BADPARAM';
DISP_CHANGE_FAILED: Result := 'DISP_CHANGE_FAILED';
DISP_CHANGE_NOTUPDATED: Result := 'DISP_CHANGE_NOTUPDATED';
DISP_CHANGE_RESTART: Result := 'DISP_CHANGE_RESTART';
else
Result := 'Unknown';
end;
Result := IntToStr(ADispChangeResult) + ' (' + Result + ')';
end;
begin
if ADispChangeResult <> DISP_CHANGE_SUCCESSFUL then
raise TPTCError.Create('Error setting display mode; ChangeDisplaySettings returned ' + DispChangeResult2String(ADispChangeResult));
end;
procedure TWin32ModeSetter.LogDevMode(const ADevMode: TDEVMODE);
function Fields2String(dmFields: DWORD): string;
begin
Result := '';
if (dmFields and DM_ORIENTATION) <> 0 then
Result := Result + 'DM_ORIENTATION + ';
if (dmFields and DM_PAPERSIZE) <> 0 then
Result := Result + 'DM_PAPERSIZE + ';
if (dmFields and DM_PAPERLENGTH) <> 0 then
Result := Result + 'DM_PAPERLENGTH + ';
if (dmFields and DM_PAPERWIDTH) <> 0 then
Result := Result + 'DM_PAPERWIDTH + ';
if (dmFields and DM_SCALE) <> 0 then
Result := Result + 'DM_SCALE + ';
if (dmFields and DM_COPIES) <> 0 then
Result := Result + 'DM_COPIES + ';
if (dmFields and DM_DEFAULTSOURCE) <> 0 then
Result := Result + 'DM_DEFAULTSOURCE + ';
if (dmFields and DM_PRINTQUALITY) <> 0 then
Result := Result + 'DM_PRINTQUALITY + ';
if (dmFields and DM_POSITION) <> 0 then
Result := Result + 'DM_POSITION + ';
if (dmFields and DM_DISPLAYORIENTATION) <> 0 then
Result := Result + 'DM_DISPLAYORIENTATION + ';
if (dmFields and DM_DISPLAYFIXEDOUTPUT) <> 0 then
Result := Result + 'DM_DISPLAYFIXEDOUTPUT + ';
if (dmFields and DM_COLOR) <> 0 then
Result := Result + 'DM_COLOR + ';
if (dmFields and DM_DUPLEX) <> 0 then
Result := Result + 'DM_DUPLEX + ';
if (dmFields and DM_YRESOLUTION) <> 0 then
Result := Result + 'DM_YRESOLUTION + ';
if (dmFields and DM_TTOPTION) <> 0 then
Result := Result + 'DM_TTOPTION + ';
if (dmFields and DM_COLLATE) <> 0 then
Result := Result + 'DM_COLLATE + ';
if (dmFields and DM_FORMNAME) <> 0 then
Result := Result + 'DM_FORMNAME + ';
if (dmFields and DM_LOGPIXELS) <> 0 then
Result := Result + 'DM_LOGPIXELS + ';
if (dmFields and DM_BITSPERPEL) <> 0 then
Result := Result + 'DM_BITSPERPEL + ';
if (dmFields and DM_PELSWIDTH) <> 0 then
Result := Result + 'DM_PELSWIDTH + ';
if (dmFields and DM_PELSHEIGHT) <> 0 then
Result := Result + 'DM_PELSHEIGHT + ';
if (dmFields and DM_DISPLAYFLAGS) <> 0 then
Result := Result + 'DM_DISPLAYFLAGS + ';
if (dmFields and DM_NUP) <> 0 then
Result := Result + 'DM_NUP + ';
if (dmFields and DM_DISPLAYFREQUENCY) <> 0 then
Result := Result + 'DM_DISPLAYFREQUENCY + ';
if (dmFields and DM_ICMMETHOD) <> 0 then
Result := Result + 'DM_ICMMETHOD + ';
if (dmFields and DM_ICMINTENT) <> 0 then
Result := Result + 'DM_ICMINTENT + ';
if (dmFields and DM_MEDIATYPE) <> 0 then
Result := Result + 'DM_MEDIATYPE + ';
if (dmFields and DM_DITHERTYPE) <> 0 then
Result := Result + 'DM_DITHERTYPE + ';
if (dmFields and DM_PANNINGWIDTH) <> 0 then
Result := Result + 'DM_PANNINGWIDTH + ';
if (dmFields and DM_PANNINGHEIGHT) <> 0 then
Result := Result + 'DM_PANNINGHEIGHT + ';
if Length(Result) > 0 then
Result := Copy(Result, 1, Length(Result) - 3);
Result := IntToStr(dmFields) + ' (' + Result + ')';
end;
function DisplayOrientation2String(dmDisplayOrientation: DWORD): string;
begin
case dmDisplayOrientation of
DMDO_DEFAULT: Result := 'DMDO_DEFAULT';
DMDO_90: Result := 'DMDO_90';
DMDO_180: Result := 'DMDO_180';
DMDO_270: Result := 'DMDO_270';
else
Result := 'Unknown';
end;
Result := IntToStr(dmDisplayOrientation) + ' (' + Result + ')';
end;
function DisplayFixedOutput2String(dmDisplayFixedOutput: DWORD): string;
begin
case dmDisplayFixedOutput of
DMDFO_DEFAULT: Result := 'DMDFO_DEFAULT';
DMDFO_CENTER: Result := 'DMDFO_CENTER';
DMDFO_STRETCH: Result := 'DMDFO_STRETCH';
else
Result := 'Unknown';
end;
Result := IntToStr(dmDisplayFixedOutput) + ' (' + Result + ')';
end;
function DisplayFlags2String(dmDisplayFlags: DWORD): string;
begin
Result := '';
if (dmDisplayFlags and DM_GRAYSCALE) <> 0 then
Result := Result + 'DM_GRAYSCALE + ';
if (dmDisplayFlags and DM_INTERLACED) <> 0 then
Result := Result + 'DM_INTERLACED + ';
if Length(Result) > 0 then
Result := Copy(Result, 1, Length(Result) - 3);
Result := IntToStr(dmDisplayFlags) + ' (' + Result + ')';
end;
begin
LOG('dmFields', Fields2String(ADevMode.dmFields));
if (ADevMode.dmFields and DM_DISPLAYORIENTATION) <> 0 then
LOG('dmDisplayOrientation', DisplayOrientation2String(ADevMode.dmDisplayOrientation));
if (ADevMode.dmFields and DM_DISPLAYFIXEDOUTPUT) <> 0 then
LOG('dmDisplayFixedOutput', DisplayFixedOutput2String(ADevMode.dmDisplayFixedOutput));
if (ADevMode.dmFields and DM_BITSPERPEL) <> 0 then
LOG('dmBitsPerPel ', ADevMode.dmBitsPerPel);
if (ADevMode.dmFields and DM_PELSWIDTH) <> 0 then
LOG('dmPelsWidth ', ADevMode.dmPelsWidth);
if (ADevMode.dmFields and DM_PELSHEIGHT) <> 0 then
LOG('dmPelsHeight ', ADevMode.dmPelsHeight);
if (ADevMode.dmFields and DM_DISPLAYFLAGS) <> 0 then
LOG('dmDisplayFlags ', DisplayFlags2String(ADevMode.dmDisplayFlags));
if (ADevMode.dmFields and DM_DISPLAYFREQUENCY) <> 0 then
LOG('dmDisplayFrequency ', IntToStr(ADevMode.dmDisplayFrequency) + ' Hz');
end;
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