2 * wevalgraph.c - Evaluation graph front-end part
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4 * Author: Alessandro Scotti (Dec 2005)
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6 * Copyright 2005 Alessandro Scotti
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8 * Enhancements Copyright 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
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10 * ------------------------------------------------------------------------
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12 * GNU XBoard is free software: you can redistribute it and/or modify
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13 * it under the terms of the GNU General Public License as published by
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14 * the Free Software Foundation, either version 3 of the License, or (at
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15 * your option) any later version.
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17 * GNU XBoard is distributed in the hope that it will be useful, but
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18 * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 * General Public License for more details.
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22 * You should have received a copy of the GNU General Public License
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23 * along with this program. If not, see http://www.gnu.org/licenses/. *
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25 *------------------------------------------------------------------------
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26 ** See the file ChangeLog for a revision history. */
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28 // code refactored by HGM to obtain front-end / back-end separation
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32 #include <windows.h>
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33 #include <commdlg.h>
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38 #include "frontend.h"
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39 #include "backend.h"
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40 #include "winboard.h"
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41 #include "evalgraph.h"
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44 #define WM_REFRESH_GRAPH (WM_USER + 1)
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46 /* Module globals */
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47 static BOOLEAN evalGraphDialogUp;
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49 static COLORREF crWhite = RGB( 0xFF, 0xFF, 0xB0 );
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50 static COLORREF crBlack = RGB( 0xAD, 0x5D, 0x3D );
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52 static HDC hdcPB = NULL;
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53 static HBITMAP hbmPB = NULL;
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54 static HPEN pens[PEN_ANY+1]; // [HGM] put all pens in one array
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55 static HBRUSH hbrHist[3] = { NULL, NULL, NULL };
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57 Boolean EvalGraphIsUp()
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59 return evalGraphDialogUp;
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62 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
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63 void DrawSegment( int x, int y, int *lastX, int *lastY, int penType )
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66 if(penType == PEN_NONE) MoveToEx( hdcPB, x, y, &stPt ); else {
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67 HPEN hp = SelectObject( hdcPB, pens[penType] );
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68 LineTo( hdcPB, x, y );
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69 SelectObject( hdcPB, hp );
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71 if(lastX != NULL) { *lastX = stPt.x; *lastY = stPt.y; }
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74 // front-end wrapper for drawing functions to do rectangles
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75 void DrawRectangle( int left, int top, int right, int bottom, int side, int style )
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77 HPEN hp = SelectObject( hdcPB, pens[PEN_BLACK] );
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80 rc.top = top; rc.left = left; rc.bottom = bottom; rc.right = right;
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82 FillRect( hdcPB, &rc, hbrHist[side] );
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84 SelectObject( hdcPB, hbrHist[side] );
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85 Rectangle( hdcPB, left, top, right, bottom );
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87 SelectObject( hdcPB, hp );
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90 // front-end wrapper for putting text in graph
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91 void DrawEvalText(char *buf, int cbBuf, int y)
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94 SetBkMode( hdcPB, TRANSPARENT );
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95 GetTextExtentPoint32( hdcPB, buf, cbBuf, &stSize );
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96 TextOut( hdcPB, MarginX - stSize.cx - 2, y - stSize.cy / 2, buf, cbBuf );
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100 static HBRUSH CreateBrush( UINT style, COLORREF color )
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104 stLB.lbStyle = style;
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105 stLB.lbColor = color;
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108 return CreateBrushIndirect( &stLB );
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111 // front-end. Create pens, device context and buffer bitmap for global use, copy result to display
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112 // The back-end part n the middle has been taken out and moed to PainEvalGraph()
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113 static VOID DisplayEvalGraph( HWND hWnd, HDC hDC )
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119 /* Get client area */
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120 GetClientRect( hWnd, &rcClient );
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122 width = rcClient.right - rcClient.left;
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123 height = rcClient.bottom - rcClient.top;
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125 /* Create or recreate paint box if needed */
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126 if( hbmPB == NULL || width != nWidthPB || height != nHeightPB ) {
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127 if( pens[PEN_DOTTED] == NULL ) {
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128 pens[PEN_BLACK] = GetStockObject(BLACK_PEN);
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129 pens[PEN_DOTTED] = CreatePen( PS_DOT, 0, RGB(0xA0,0xA0,0xA0) );
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130 pens[PEN_BLUEDOTTED] = CreatePen( PS_DOT, 0, RGB(0x00,0x00,0xFF) );
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131 pens[PEN_BOLDWHITE] = CreatePen( PS_SOLID, 2, crWhite );
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132 pens[PEN_BOLDBLACK] = CreatePen( PS_SOLID, 2, crBlack );
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133 hbrHist[0] = CreateBrush( BS_SOLID, crWhite );
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134 hbrHist[1] = CreateBrush( BS_SOLID, crBlack );
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135 hbrHist[2] = CreateBrush( BS_SOLID, GetSysColor( COLOR_3DFACE ) ); // background
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138 if( hdcPB != NULL ) {
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143 if( hbmPB != NULL ) {
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144 DeleteObject( hbmPB );
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148 hdcPB = CreateCompatibleDC( hDC );
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151 nHeightPB = height;
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152 hbmPB = CreateCompatibleBitmap( hDC, nWidthPB, nHeightPB );
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154 SelectObject( hdcPB, hbmPB );
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157 // back-end painting; calls back front-end primitives for lines, rectangles and text
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159 SetWindowText(hWnd, MakeEvalTitle(differentialView ? T_("Blunder Graph") : T_("Evaluation Graph")));
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161 /* Copy bitmap into destination DC */
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162 BitBlt( hDC, 0, 0, nWidthPB, nHeightPB, hdcPB, 0, 0, SRCCOPY );
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165 // Note: Once the eval graph is opened, this window-proc lives forever; een closing the
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166 // eval-graph window merely hides it. On opening we re-initialize it, though, so it could
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167 // as well hae been destroyed. While it is open it processes the REFRESH_GRAPH commands.
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168 LRESULT CALLBACK EvalGraphProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
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170 static SnapData sd;
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176 case WM_INITDIALOG:
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177 Translate(hDlg, DLG_EvalGraph);
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178 if( evalGraphDialog == NULL ) {
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179 evalGraphDialog = hDlg;
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181 RestoreWindowPlacement( hDlg, &wpEvalGraph ); /* Restore window placement */
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187 switch (LOWORD(wParam)) {
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189 EndDialog(hDlg, TRUE);
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193 EndDialog(hDlg, FALSE);
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202 case WM_ERASEBKGND:
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206 hDC = BeginPaint( hDlg, &stPS );
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207 DisplayEvalGraph( hDlg, hDC );
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208 EndPaint( hDlg, &stPS );
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211 case WM_MOUSEWHEEL:
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212 if((short)HIWORD(wParam) < 0) appData.zoom++;
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213 if((short)HIWORD(wParam) > 0 && appData.zoom > 1) appData.zoom--;
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215 case WM_RBUTTONDOWN:
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216 differentialView = !differentialView;
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217 case WM_REFRESH_GRAPH:
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219 hDC = GetDC( hDlg );
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220 DisplayEvalGraph( hDlg, hDC );
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221 ReleaseDC( hDlg, hDC );
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224 case WM_LBUTTONDOWN:
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225 if( wParam == 0 || wParam == MK_LBUTTON ) {
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226 int index = GetMoveIndexFromPoint( LOWORD(lParam), HIWORD(lParam) );
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228 if( index >= 0 && index < currLast ) {
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229 ToNrEvent( index + 1 );
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235 InvalidateRect( hDlg, NULL, FALSE );
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238 case WM_GETMINMAXINFO:
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240 MINMAXINFO * mmi = (MINMAXINFO *) lParam;
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242 mmi->ptMinTrackSize.x = 100;
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243 mmi->ptMinTrackSize.y = 100;
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247 /* Support for captionless window */
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249 EvalGraphPopDown();
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252 case WM_ENTERSIZEMOVE:
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253 return OnEnterSizeMove( &sd, hDlg, wParam, lParam );
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256 return OnSizing( &sd, hDlg, wParam, lParam );
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259 return OnMoving( &sd, hDlg, wParam, lParam );
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261 case WM_EXITSIZEMOVE:
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262 return OnExitSizeMove( &sd, hDlg, wParam, lParam );
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268 // creates the eval graph, or unhides it.
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269 VOID EvalGraphPopUp()
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273 CheckMenuItem(GetMenu(hwndMain), IDM_ShowEvalGraph, MF_CHECKED);
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275 if( evalGraphDialog ) {
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276 SendMessage( evalGraphDialog, WM_INITDIALOG, 0, 0 );
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278 if( ! evalGraphDialogUp ) {
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279 ShowWindow(evalGraphDialog, SW_SHOW);
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283 crWhite = appData.evalHistColorWhite;
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284 crBlack = appData.evalHistColorBlack;
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286 lpProc = MakeProcInstance( (FARPROC) EvalGraphProc, hInst );
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288 /* Note to self: dialog must have the WS_VISIBLE style set, otherwise it's not shown! */
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289 CreateDialog( hInst, MAKEINTRESOURCE(DLG_EvalGraph), hwndMain, (DLGPROC)lpProc );
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291 FreeProcInstance(lpProc);
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294 evalGraphDialogUp = TRUE;
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297 // Note that this hides the window. It could as well have destroyed it.
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298 VOID EvalGraphPopDown()
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300 CheckMenuItem(GetMenu(hwndMain), IDM_ShowEvalGraph, MF_UNCHECKED);
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302 if( evalGraphDialog ) {
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303 ShowWindow(evalGraphDialog, SW_HIDE);
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306 evalGraphDialogUp = FALSE;
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309 // This function is the interface to the back-end. It is currently called through the front-end,
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310 // though, where it shares the HistorySet() wrapper with MoveHistorySet(). Once all front-ends
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311 // support the eval graph, it would be more logical to call it directly from the back-end.
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312 VOID EvalGraphSet( int first, int last, int current, ChessProgramStats_Move * pvInfo )
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314 /* [AS] Danger! For now we rely on the pvInfo parameter being a static variable! */
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318 currCurrent = current;
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319 currPvInfo = pvInfo;
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321 if( evalGraphDialog ) {
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322 SendMessage( evalGraphDialog, WM_REFRESH_GRAPH, 0, 0 );
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