hello world

neo/tools/common/ColorButton.cpp

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+/*
+===========================================================================
+
+Doom 3 GPL Source Code
+Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  
+
+Doom 3 Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Doom 3 Source Code 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#include "../../idlib/precompiled.h"
+#pragma hdrstop
+
+#include "ColorButton.h"
+
+static const int ARROW_SIZE_CX = 4 ;
+static const int ARROW_SIZE_CY = 2 ;
+
+/*
+================
+ColorButton_SetColor
+
+Sets the current color button color
+================
+*/
+void ColorButton_SetColor ( HWND hWnd, COLORREF color )
+{
+	if ( NULL == hWnd )
+	{
+		return;
+	}
+	SetWindowLong ( hWnd, GWL_USERDATA, color );
+	InvalidateRect ( hWnd, NULL, FALSE );
+}
+
+void ColorButton_SetColor ( HWND hWnd, const char* color )
+{
+	float red;
+	float green;
+	float blue;
+	float alpha;
+
+	if ( NULL == hWnd )
+	{
+		return;
+	}
+	
+	sscanf ( color, "%f,%f,%f,%f", &red, &green, &blue, &alpha );
+	
+	ColorButton_SetColor ( hWnd, RGB(red*255.0f, green*255.0f, blue*255.0f) );
+}
+
+void AlphaButton_SetColor ( HWND hWnd, const char* color )
+{
+	float red;
+	float green;
+	float blue;
+	float alpha;
+
+	if ( NULL == hWnd )
+	{
+		return;
+	}
+	
+	sscanf ( color, "%f,%f,%f,%f", &red, &green, &blue, &alpha );
+	
+	ColorButton_SetColor ( hWnd, RGB(alpha*255.0f, alpha*255.0f, alpha*255.0f) );
+}
+
+/*
+================
+ColorButton_GetColor
+
+Retrieves the current color button color
+================
+*/
+COLORREF ColorButton_GetColor ( HWND hWnd )
+{
+	return (COLORREF) GetWindowLong ( hWnd, GWL_USERDATA );
+}
+
+/*
+================
+ColorButton_DrawArrow
+
+Draws the arrow on the color button
+================
+*/
+static void ColorButton_DrawArrow ( HDC hDC, RECT* pRect, COLORREF color )
+{
+	POINT ptsArrow[3];
+
+	ptsArrow[0].x = pRect->left;
+	ptsArrow[0].y = pRect->top;
+	ptsArrow[1].x = pRect->right;
+	ptsArrow[1].y = pRect->top;
+	ptsArrow[2].x = (pRect->left + pRect->right)/2;
+	ptsArrow[2].y = pRect->bottom;
+	
+	HBRUSH arrowBrush = CreateSolidBrush ( color );
+	HPEN   arrowPen   = CreatePen ( PS_SOLID, 1, color );
+	
+	HGDIOBJ oldBrush = SelectObject ( hDC, arrowBrush );
+	HGDIOBJ oldPen   = SelectObject ( hDC, arrowPen );
+	
+	SetPolyFillMode(hDC, WINDING);
+	Polygon(hDC, ptsArrow, 3);
+	
+	SelectObject ( hDC, oldBrush );
+	SelectObject ( hDC, oldPen );
+	
+	DeleteObject ( arrowBrush );
+	DeleteObject ( arrowPen );
+}
+
+/*
+================
+ColorButton_DrawItem
+
+Draws the actual color button as as reponse to a WM_DRAWITEM message
+================
+*/
+void ColorButton_DrawItem ( HWND hWnd, LPDRAWITEMSTRUCT dis )
+{
+	assert ( dis );
+
+	HDC		hDC		 = dis->hDC;
+	UINT    state    = dis->itemState;
+    RECT	rDraw    = dis->rcItem;
+	RECT	rArrow;
+
+	// Draw outter edge
+	UINT uFrameState = DFCS_BUTTONPUSH|DFCS_ADJUSTRECT;
+
+	if (state & ODS_SELECTED)
+	{
+		uFrameState |= DFCS_PUSHED;
+	}
+
+	if (state & ODS_DISABLED)
+	{
+		uFrameState |= DFCS_INACTIVE;
+	}
+	
+	DrawFrameControl ( hDC, &rDraw, DFC_BUTTON, uFrameState );
+
+	// Draw Focus
+	if (state & ODS_SELECTED)
+	{
+		OffsetRect(&rDraw, 1,1);
+	}
+
+	if (state & ODS_FOCUS) 
+    {
+		RECT rFocus = {rDraw.left,
+					   rDraw.top,
+					   rDraw.right - 1,
+					   rDraw.bottom};
+  
+        DrawFocusRect ( hDC, &rFocus );
+    }
+
+	InflateRect ( &rDraw, -GetSystemMetrics(SM_CXEDGE), -GetSystemMetrics(SM_CYEDGE) );
+
+	// Draw the arrow
+	rArrow.left		= rDraw.right - ARROW_SIZE_CX - GetSystemMetrics(SM_CXEDGE) /2;
+	rArrow.right	= rArrow.left + ARROW_SIZE_CX;
+	rArrow.top		= (rDraw.bottom + rDraw.top)/2 - ARROW_SIZE_CY / 2;
+	rArrow.bottom	= (rDraw.bottom + rDraw.top)/2 + ARROW_SIZE_CY / 2;
+
+	ColorButton_DrawArrow ( hDC, &rArrow, (state & ODS_DISABLED) ? ::GetSysColor(COLOR_GRAYTEXT) : RGB(0,0,0) );
+
+	rDraw.right = rArrow.left - GetSystemMetrics(SM_CXEDGE)/2;
+
+	// Draw separator
+	DrawEdge ( hDC, &rDraw, EDGE_ETCHED, BF_RIGHT);
+
+	rDraw.right -= (GetSystemMetrics(SM_CXEDGE) * 2) + 1 ;
+
+	// Draw Color				  
+	if ((state & ODS_DISABLED) == 0)
+	{
+		HBRUSH color = CreateSolidBrush ( (COLORREF)GetWindowLong ( hWnd, GWL_USERDATA ) );
+		FillRect ( hDC, &rDraw, color );
+		FrameRect ( hDC, &rDraw, (HBRUSH)::GetStockObject(BLACK_BRUSH));
+		DeleteObject( color );
+	}
+}