From 7b6eeafcb395cee5ab669f5fd90ed69a8ff5f55f Mon Sep 17 00:00:00 2001
From: wp_xxyyzz <wp_xxyyzz@8e941d3f-bd1b-0410-a28a-d453659cc2b4>
Date: Wed, 3 Apr 2024 16:23:07 +0000
Subject: [PATCH] rgbgraphics: Add qt5 support.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@9314 8e941d3f-bd1b-0410-a28a-d453659cc2b4
---
 .../rgbgraphics/source/rgbqt5routines.pas     | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 components/rgbgraphics/source/rgbqt5routines.pas

diff --git a/components/rgbgraphics/source/rgbqt5routines.pas b/components/rgbgraphics/source/rgbqt5routines.pas
new file mode 100644
index 000000000..ae70a586d
--- /dev/null
+++ b/components/rgbgraphics/source/rgbqt5routines.pas
@@ -0,0 +1,97 @@
+{
+ /***************************************************************************
+                                RGBQt5Routines.pas
+
+
+ ***************************************************************************/
+
+ *****************************************************************************
+ *                                                                           *
+ *  See the file COPYING.modifiedLGPL, included in this distribution,        *
+ *  for details about the copyright.                                         *
+ *                                                                           *
+ *  This program 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.                     *
+ *                                                                           *
+ *****************************************************************************
+
+  Author:  Tom Gregorovic (_tom_@centrum.cz)
+
+  Abstract:
+    This unit contains routines for Qt interface.
+
+}
+unit RGBQt5Routines;
+
+{$ifdef fpc}
+  {$mode objfpc}{$H+}
+{$endif}
+
+interface
+
+uses
+  SysUtils, Types, LCLType, Qt5, QtObjects, Classes,
+  RGBTypes;
+  
+  procedure WidgetSetDrawRGB32Bitmap(Dest: HDC; DstX, DstY: Integer; SrcX, SrcY, SrcWidth, SrcHeight: Integer;
+    Bitmap: TRGB32BitmapCore);
+  procedure WidgetSetStretchDrawRGB32Bitmap(Dest: HDC; DstX, DstY, DstWidth, DstHeight: Integer;
+    SrcX, SrcY, SrcWidth, SrcHeight: Integer; Bitmap: TRGB32BitmapCore);
+    
+  procedure WidgetSetDrawRGB8Bitmap(Dest: HDC; DstX, DstY: Integer; SrcX, SrcY, SrcWidth, SrcHeight: Integer;
+    Bitmap: TRGB8BitmapCore);
+
+implementation
+
+procedure WidgetSetDrawRGB32Bitmap(Dest: HDC; DstX, DstY: Integer; SrcX, SrcY, SrcWidth,
+  SrcHeight: Integer; Bitmap: TRGB32BitmapCore);
+begin
+  WidgetSetStretchDrawRGB32Bitmap(Dest, DstX, DstY, SrcWidth, SrcHeight, SrcX, SrcY, SrcWidth, SrcHeight, Bitmap);
+end;
+
+procedure WidgetSetStretchDrawRGB32Bitmap(Dest: HDC; DstX, DstY, DstWidth,
+  DstHeight: Integer; SrcX, SrcY, SrcWidth, SrcHeight: Integer;
+  Bitmap: TRGB32BitmapCore);
+var
+  DstQDC: TQtDeviceContext absolute Dest;
+  SrcRect, DstRect: TRect;
+  Image: TQtImage;
+begin
+  DstRect := Bounds(DstX, DstY, DstWidth, DstHeight);
+  SrcRect := Bounds(SrcX, SrcY, SrcWidth, SrcHeight);
+  
+  Image := TQtImage.Create(Bitmap.Pixels, Bitmap.Width, Bitmap.Height, QImageFormat_RGB32);
+  try
+    QPainter_drawImage(DstQDC.Widget, PRect(@DstRect), Image.Handle, @SrcRect, QtAutoColor);
+  finally
+    Image.Free;
+  end;
+end;
+
+procedure WidgetSetDrawRGB8Bitmap(Dest: HDC; DstX, DstY: Integer; SrcX, SrcY,
+  SrcWidth, SrcHeight: Integer; Bitmap: TRGB8BitmapCore);
+var
+  DstQDC: TQtDeviceContext absolute Dest;
+  SrcRect, DstRect: TRect;
+  Image: TQtImage;
+  I: Integer;
+begin
+  DstRect := Bounds(DstX, DstY, SrcWidth, SrcHeight);
+  SrcRect := Bounds(SrcX, SrcY, SrcWidth, SrcHeight);
+
+  Image := TQtImage.Create(Bitmap.Pixels, Bitmap.Width, Bitmap.Height, QImageFormat_Indexed8);
+  try
+    // initialize palette
+    for I := 0 to 255 do
+      QImage_setColor(Image.Handle, I, I + I shl 8 + I shl 16 + $FF shl 24);
+    
+    QPainter_drawImage(DstQDC.Widget, PRect(@DstRect), Image.Handle, @SrcRect, QtAutoColor);
+  finally
+    Image.Free;
+  end;
+end;
+
+
+end.
+