author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:39:10 +0200 | |
changeset 0 | cec860690d41 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#include "DrawUtils.h" |
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//These are for masks and shifts for rgb 332 data format. |
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const TUint Blue_Mask =0x03; |
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const TUint Green_Mask =0x1C; |
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const TUint Red_Mask =0xE0; |
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const TUint BBP8_GreenShift =2; |
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const TUint BBP8_RedShift =5; |
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//Number of bits per pixel |
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const TInt BPP8 =8; |
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const TInt BPP12 =12; |
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const TInt BPP16 =16; |
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const TInt BPP24 =24; |
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const TInt BPP32 =32; |
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//16BPP has rgb565 format rrrrrggggggbbbbb. |
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const TInt BPP16RedShift =13; |
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const TInt BPP16GreenShift =8; |
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const TInt BPP16BlueShift =3; |
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|
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//12 bpp has rgb 444 format rrrrggggbbbb. |
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const TInt BPP12RedShift =9; |
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const TInt BPP12GreenShift =5; |
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const TInt BPP12BlueShift =2; |
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|
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//24bpp has rgb888 format and 32 bpp has AlRGB 8888 format where Al is alpha. |
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const TInt BPP32RedShift =21; |
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const TInt BPP32GreenShift =13; |
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const TInt BPP32BlueShift =6; |
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|
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void CDrawUtils::ColourFillUtility(TUint8 aColorVal,const TPoint& aPos) |
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/** |
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* |
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* Utility Function that fills required colour in at the given x,y positions on the screen, |
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* in a 16 pixels * 16 pixels lines area |
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* |
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* @param aColorVal: The Colour to be filled in . |
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* Scenarios: |
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* 1) 4 bits per pixel mode |
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* aColorVal contains empty upper |
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* 4 bits & only contains 4 bits of info, |
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* 2) 8 bits per pixel mode |
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* all 8 bits in aColorVal are filled and the value, |
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* is taken from the standard OS palette. |
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* 3) Other modes: all other modes aColorVal |
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* holds data in rgb 332 format. |
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* |
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* @param aPos The position of the pixel |
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* |
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* |
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*/ |
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{ |
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//get screendriver attributes |
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TInt displayMode; |
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HAL::Get(HAL::EDisplayMode, displayMode); |
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TInt displayMemoryAddress; |
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HAL::Get(HAL::EDisplayMemoryAddress, displayMemoryAddress); |
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TInt displayOffsetBetweenLines =displayMode; |
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HAL::Get(HAL::EDisplayOffsetBetweenLines, displayOffsetBetweenLines); |
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TInt offsetToFirstPixel =displayMode; |
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HAL::Get(HAL::EDisplayOffsetToFirstPixel, offsetToFirstPixel); |
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TInt displayBitsPerPixel =displayMode; |
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HAL::Get(HAL::EDisplayBitsPerPixel, displayBitsPerPixel); |
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TUint red =(aColorVal&Red_Mask)>>BBP8_RedShift; |
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TUint green =(aColorVal&Green_Mask)>>BBP8_GreenShift; |
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TUint blue =aColorVal&Blue_Mask; |
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TUint8 color8bpp =aColorVal; |
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TInt bbp =displayBitsPerPixel; |
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|
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//Shifts to convert RGB332 into a respective formats. |
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//12 bpp has rgb format 444, 16 bpp has rgb format 565, 24 bpp has rgb 888 format, 32 bpp has Al rgb 8888 format : Al is alpha |
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TUint color12bpp=(red << BPP12RedShift) | (green << BPP12GreenShift) | (blue << BPP12BlueShift); |
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TUint color16bpp=(red << BPP16RedShift) | (green << BPP16GreenShift) | (blue << BPP16BlueShift); |
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TUint color32bpp=(red << BPP32RedShift) | (green << BPP32GreenShift) | (blue << BPP32BlueShift); |
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if( displayBitsPerPixel == BPP12 ) |
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{ |
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bbp = BPP16; |
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} |
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else if ( displayBitsPerPixel == BPP24 ) |
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{ |
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bbp = BPP32; |
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} |
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104 |
else |
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105 |
{ |
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bbp = displayBitsPerPixel; |
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} |
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108 |
|
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TInt baseAddress=displayMemoryAddress + offsetToFirstPixel + aPos.iY * displayOffsetBetweenLines + aPos.iX * bbp / BPP8; |
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if ( displayBitsPerPixel==BPP8 ) |
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111 |
{ |
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TUint8 *pixelPtr=(TUint8*)baseAddress; |
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*pixelPtr++=color8bpp; |
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*pixelPtr=color8bpp; |
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} |
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else if ( displayBitsPerPixel == BPP12 ) |
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{ |
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TUint16 *pixelPtr=(TUint16*)baseAddress; |
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*pixelPtr++=color12bpp; |
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*pixelPtr=color12bpp; |
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} |
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else if ( displayBitsPerPixel == BPP16 ) |
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{ |
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TUint16 *pixelPtr =(TUint16*)baseAddress; |
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*pixelPtr++=color16bpp; |
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*pixelPtr=color16bpp; |
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} |
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else if ( bbp == BPP32 ) |
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{ |
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TUint32 *pixelPtr=(TUint32*)baseAddress; |
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*pixelPtr++=color32bpp; |
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*pixelPtr=color32bpp; |
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} |
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} |
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135 |
|
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136 |
|
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137 |
|
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138 |
|
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void CDrawUtils::DrawSquareUtility(const TPoint& aTopLeft,const TInt aBoxLength,const TInt aBoxWidth,TUint8 aColorVal) |
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/** |
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141 |
* |
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* Draw a filled in square according to the length and width supplied |
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* |
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* @param aTopLeft Pixel position of the top left corner of the box |
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* |
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* @param aBoxLength length in pixels of the box to be drawn. |
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* |
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* @param aBoxWidth width in pixels of the box to be drawn. |
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* |
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* @param aColorVal colour of the box |
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* |
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*/ |
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153 |
{ |
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TInt offSet =1; |
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TInt xOrigin =0; |
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TPoint endPos; |
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TPoint currentPos; |
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if( aTopLeft.iX > xOrigin ) |
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159 |
{ |
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endPos.iX =aTopLeft.iX + aBoxWidth - offSet; |
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} |
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else//TopLeft x co-ordinate is zero |
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{ |
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endPos.iX =aTopLeft.iX + aBoxWidth; |
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} |
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166 |
|
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endPos.iY =aTopLeft.iY; |
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currentPos =aTopLeft; |
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169 |
|
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for(TInt i=0; i<=aBoxLength; i++) |
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171 |
{ |
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DrawLineUtility(currentPos,endPos,aColorVal); |
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currentPos.iY =currentPos.iY + offSet; |
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endPos.iY =endPos.iY + offSet; |
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} |
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} |
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177 |
|
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178 |
|
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void CDrawUtils::DrawLineUtility(const TPoint& aStartPos, const TPoint& aEndPos,const TUint8 aColorVal) |
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/** |
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* |
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* Draw a line with colour specified |
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* |
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* @param aStartPos pixel position to start line. |
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* @param aEndPos pixel position to end line. |
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186 |
* |
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*/ |
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188 |
{ |
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TPoint step =aEndPos-aStartPos; |
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TBool isDiagonal =EFalse; |
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TInt origin =0; |
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if (( step.iX>origin ) && ( step.iY>origin )) |
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193 |
{ |
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isDiagonal =ETrue; |
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} |
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TPoint currentPos=aStartPos; |
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for(TInt i=0; i<=step.iX; i++) |
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198 |
{ |
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currentPos.iX =( aStartPos.iX + i ); |
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for(TInt j=0; j<=step.iY; j++) |
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201 |
{ |
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if ( !isDiagonal ) |
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203 |
{ |
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currentPos.iY =( aStartPos.iY + j ); |
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ColourFillUtility(aColorVal, currentPos); |
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} |
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else //line is diagonal |
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208 |
{ |
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currentPos.iY =( aStartPos.iY + i ); |
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ColourFillUtility( aColorVal,currentPos); |
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break; |
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} |
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} |
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} |
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} |
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void CDrawUtils::DrawSquareOutLineUtility(const TPoint& aTopLeft,const TInt aBoxHeight,const TInt aBoxWidth,TUint8 aColorVal) |
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/** |
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* |
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* Draw an outline of a square i.e a square that has not been filled in with colour |
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* Draw a filled in square according to the length and width supplied |
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* |
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* @param aTopLeft Pixel position of the top left corner of the box |
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* |
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* @param aBoxLength length in pixels of the box to be drawn. |
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* |
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* @param aBoxWidth width in pixels of the box to be drawn. |
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* |
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* |
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*/ |
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{ |
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TPoint startPos =aTopLeft; |
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TPoint endPos; |
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//top horizontal line |
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endPos.iX =aTopLeft.iX + aBoxWidth; |
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endPos.iY =aTopLeft.iY; |
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DrawLineUtility(startPos, endPos, aColorVal); |
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|
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//vertical left |
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endPos.iX =aTopLeft.iX; |
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endPos.iY =aTopLeft.iY + aBoxHeight; |
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DrawLineUtility(startPos, endPos, aColorVal); |
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|
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//vertical right |
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startPos.iX =aTopLeft.iX + aBoxWidth; |
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startPos.iY =aTopLeft.iY; |
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endPos.iX =aTopLeft.iX + aBoxWidth; |
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endPos.iY =aTopLeft.iY + aBoxHeight; |
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DrawLineUtility(startPos, endPos, aColorVal); |
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|
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//bottom horizontal |
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startPos.iX =aTopLeft.iX; |
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startPos.iY =aTopLeft.iY + aBoxHeight; |
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endPos.iX =aTopLeft.iX + aBoxWidth; |
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endPos.iY =aTopLeft.iY + aBoxHeight; |
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DrawLineUtility(startPos, endPos, aColorVal); |
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} |