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108 lines
2.7 KiB
ObjectPascal
108 lines
2.7 KiB
ObjectPascal
{
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----------------------------------
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qtproc.pp - qt5 interface procs
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----------------------------------
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This unit contains procedures/functions needed for the qt5 <-> LCL interface
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}
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{
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*****************************************************************************
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This file is part of the Lazarus Component Library (LCL)
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See the file COPYING.modifiedLGPL.txt, included in this distribution,
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for details about the license.
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*****************************************************************************
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}
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unit qtproc;
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{$mode objfpc}{$H+}
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interface
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{$I qtdefines.inc}
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uses
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// Bindings
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qt5,
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// LazUtils
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GraphType, LazUTF8,
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// LCL
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InterfaceBase;
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const
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EVE_IO_READ = 1;
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EVE_IO_WRITE = 4;
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EVE_IO_ERROR = 8;
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type
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PWaitHandleEventHandler = ^TWaitHandleEventHandler;
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TWaitHandleEventHandler = record
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qsn: array[QSocketNotifierRead..QSocketNotifierException] of QSocketNotifierH; // the notifiers for events
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qsn_hook: array[QSocketNotifierRead..QSocketNotifierException] of QSocketNotifier_hookH; // the hooks
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user_callback: TWaitHandleEvent;
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udata: PtrInt; // the userdata
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socket: Integer; // for mapping
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end;
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procedure FillStandardDescription(var Desc: TRawImageDescription);
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function GetPixelsPerInch: Integer;
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implementation
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{------------------------------------------------------------------------------
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Function: FillStandardDescription
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure FillStandardDescription(var Desc: TRawImageDescription);
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begin
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Desc.Init;
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Desc.Format := ricfRGBA;
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// Desc.Width := 0
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// Desc.Height := 0
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// Desc.PaletteColorCount := 0;
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Desc.BitOrder := riboReversedBits;
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Desc.ByteOrder := riboLSBFirst;
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Desc.LineOrder := riloTopToBottom;
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Desc.BitsPerPixel := 32;
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Desc.Depth := 32;
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// Qt wants dword-aligned data
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Desc.LineEnd := rileDWordBoundary;
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// 8-8-8-8 mode, high byte is Alpha
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Desc.AlphaPrec := 8;
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Desc.RedPrec := 8;
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Desc.GreenPrec := 8;
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Desc.BluePrec := 8;
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Desc.AlphaShift := 24;
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Desc.RedShift := 16;
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Desc.GreenShift := 8;
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// Desc.BlueShift := 0;
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// Qt wants dword-aligned data
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Desc.MaskLineEnd := rileDWordBoundary;
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Desc.MaskBitOrder := riboReversedBits;
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Desc.MaskBitsPerPixel := 1;
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// Desc.MaskShift := 0;
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end;
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{------------------------------------------------------------------------------
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Function: GetPixelsPerInch
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Params: none
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Returns: pixels per inch value eg. 96
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------------------------------------------------------------------------------}
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function GetPixelsPerInch: Integer;
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var
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QtDC: QPaintDeviceH;
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begin
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QtDC := QWidget_to_QPaintDevice(QApplication_desktop);
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Result := QPaintDevice_logicalDpiY(QtDC);
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end;
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end.
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