Actual source code: win32draw.c

  1: #include <petscsys.h>
  2: #include <petsc/private/drawimpl.h>
  3: #include <../src/sys/classes/draw/impls/win32/win32draw.h>

  5: #define IDC_FOUR       109
  6: #define IDI_FOUR       107
  7: #define IDM_EXIT       105
  8: #define IDR_POPUP      103
  9: #define MAX_LOADSTRING 100

 11: #if !defined(SelectPen)
 12:   #define SelectPen(hdc, hpen) ((HPEN)SelectObject((hdc), (HGDIOBJ)(HPEN)(hpen)))
 13: #endif
 14: #if !defined(SelectFont)
 15:   #define SelectFont(hdc, hfont) ((HFONT)SelectObject((hdc), (HGDIOBJ)(HFONT)(hfont)))
 16: #endif
 17: #if !defined(SelectBrush)
 18:   #define SelectBrush(hdc, hbrush) ((HBRUSH)SelectObject((hdc), (HGDIOBJ)(HBRUSH)(hbrush)))
 19: #endif
 20: #if !defined(GetStockBrush)
 21:   #define GetStockBrush(i) ((HBRUSH)GetStockObject(i))
 22: #endif

 24: #define XTRANS(draw, win, x) (int)(((win)->w) * ((draw)->port_xl + (((x - (draw)->coor_xl) * ((draw)->port_xr - (draw)->port_xl)) / ((draw)->coor_xr - (draw)->coor_xl))))
 25: #define YTRANS(draw, win, y) (int)(((win)->h) * (1.0 - (draw)->port_yl - (((y - (draw)->coor_yl) * ((draw)->port_yr - (draw)->port_yl)) / ((draw)->coor_yr - (draw)->coor_yl))))

 27: HINSTANCE  hInst;
 28: HANDLE     g_hWindowListMutex = NULL;
 29: WindowNode WindowListHead     = NULL;

 31: /* Hard coded color hue until hue.c works with this */
 32: unsigned char RedMap[]   = {255, 0, 255, 0, 0, 0, 255, 127, 34, 255, 238, 165, 255, 255, 190, 255, 255, 238, 0, 255, 105, 154, 135, 0, 0, 244, 152, 176, 220, 216, 50, 255};
 33: unsigned char GreenMap[] = {255, 0, 0, 255, 255, 0, 0, 255, 139, 165, 130, 42, 182, 127, 190, 255, 215, 162, 197, 246, 105, 205, 206, 100, 0, 164, 245, 224, 17, 191, 205, 240};
 34: unsigned char BlueMap[]  = {255, 0, 0, 0, 255, 255, 225, 212, 34, 0, 238, 42, 193, 80, 190, 0, 0, 173, 205, 143, 105, 50, 235, 0, 128, 96, 255, 230, 120, 216, 50, 245};

 36: /* Forward declarations of functions included in this code module: */
 37: LRESULT CALLBACK      PetscWndProc(HWND, UINT, WPARAM, LPARAM);
 38: static PetscErrorCode TranslateColor_Win32(PetscDraw, int);
 39: static PetscErrorCode AverageColorRectangle_Win32(PetscDraw, int, int, int, int);
 40: static PetscErrorCode AverageColorTriangle_Win32(PetscDraw, int, int, int);
 41: static PetscErrorCode deletemouselist_Win32(WindowNode);
 42: static void           OnPaint_Win32(HWND);
 43: static void           OnDestroy_Win32(HWND);
 44: static PetscErrorCode MouseRecord_Win32(HWND, PetscDrawButton);
 45: static PetscErrorCode PetscDrawGetPopup_Win32(PetscDraw, PetscDraw *);

 47: static PetscErrorCode PetscDrawSetDoubleBuffer_Win32(PetscDraw draw)
 48: {
 49:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
 50:   HDC              hdc     = GetDC(windraw->hWnd);

 52:   PetscFunctionBegin;
 53:   windraw->node->DoubleBuffer    = CreateCompatibleDC(hdc);
 54:   windraw->node->DoubleBufferBit = CreateCompatibleBitmap(hdc, windraw->w, windraw->h);
 55:   windraw->node->dbstore         = SelectObject(windraw->node->DoubleBuffer, windraw->node->DoubleBufferBit);
 56:   /* Fill background of second buffer */
 57:   ExtFloodFill(windraw->node->DoubleBuffer, 0, 0, COLOR_WINDOW, FLOODFILLBORDER);
 58:   /* Copy current buffer into second buffer and set window data as double buffered */
 59:   BitBlt(windraw->node->DoubleBuffer, 0, 0, windraw->w, windraw->h, windraw->node->Buffer, 0, 0, SRCCOPY);

 61:   windraw->node->DoubleBuffered = PETSC_TRUE;
 62:   ReleaseDC(windraw->hWnd, hdc);
 63:   PetscFunctionReturn(PETSC_SUCCESS);
 64: }

 66: static PetscErrorCode PetscDrawFlush_Win32(PetscDraw draw)
 67: {
 68:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
 69:   HDC              hdc     = GetDC(windraw->hWnd);

 71:   PetscFunctionBegin;
 72:   /* flush double buffer into primary buffer */
 73:   BitBlt(windraw->node->Buffer, 0, 0, windraw->w, windraw->h, windraw->node->DoubleBuffer, 0, 0, SRCCOPY);
 74:   /* flush double buffer into window */
 75:   BitBlt(hdc, 0, 0, windraw->w, windraw->h, windraw->node->DoubleBuffer, 0, 0, SRCCOPY);
 76:   ReleaseDC(windraw->hWnd, hdc);
 77:   PetscFunctionReturn(PETSC_SUCCESS);
 78: }

 80: static PetscErrorCode deletemouselist_Win32(WindowNode deletelist)
 81: {
 82:   /* Called upon window close. Frees memory of linked list of stored mouse commands */
 83:   MouseNode node;

 85:   while (deletelist->MouseListHead) {
 86:     node = deletelist->MouseListHead;
 87:     if (deletelist->MouseListHead->mnext) deletelist->MouseListHead = deletelist->MouseListHead->mnext;
 88:     PetscFree(node);
 89:   }
 90:   deletelist->MouseListHead = deletelist->MouseListTail = NULL;
 91:   if (deletelist->wprev) deletelist->wprev->wnext = deletelist->wnext;
 92:   if (deletelist->wnext) deletelist->wnext->wprev = deletelist->wprev;
 93:   PetscFree(deletelist);
 94:   return PETSC_SUCCESS;
 95: }

 97: static PetscErrorCode PetscDrawGetMouseButton_Win32(PetscDraw draw, PetscDrawButton *button, PetscReal *x_user, PetscReal *y_user, PetscReal *x_phys, PetscReal *y_phys)
 98: {
 99:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
100:   WindowNode       current;
101:   MouseNode        node = 0;

103:   PetscFunctionBegin;
104:   /* Make sure no other code is using the linked list at this moment */
105:   WaitForSingleObject(g_hWindowListMutex, INFINITE);
106:   /* Look for the node that matches the window you are using */
107:   current = WindowListHead;
108:   while (current) {
109:     if (current->hWnd == windraw->hWnd) {
110:       current->IsGetMouseOn = TRUE;
111:       break;
112:     } else current = current->wnext;
113:   }
114:   /* If no actions have occurred, wait for one */
115:   node = current->MouseListHead;
116:   if (!node) {
117:     ReleaseMutex(g_hWindowListMutex);
118:     WaitForSingleObject(current->event, INFINITE);
119:     WaitForSingleObject(g_hWindowListMutex, INFINITE);
120:   }
121:   /* once we have the information, assign the pointers to it */
122:   *button = current->MouseListHead->Button;
123:   *x_user = current->MouseListHead->user.x;
124:   *y_user = current->MouseListHead->user.y;
125:   /* optional arguments */
126:   if (x_phys) *x_phys = current->MouseListHead->phys.x;
127:   if (y_phys) *y_phys = current->MouseListHead->phys.y;
128:   /* remove set of information from sub linked-list, delete the node */
129:   current->MouseListHead = current->MouseListHead->mnext;
130:   if (!current->MouseListHead) {
131:     ResetEvent(current->event);
132:     current->MouseListTail = NULL;
133:   }
134:   if (node) PetscFree(node);

136:   /* Release mutex so that  other code can use
137:      the linked list now that we are done with it */
138:   ReleaseMutex(g_hWindowListMutex);
139:   PetscFunctionReturn(PETSC_SUCCESS);
140: }

142: static PetscErrorCode PetscDrawPause_Win32(PetscDraw draw)
143: {
144:   PetscFunctionBegin;
145:   PetscSleep(draw->pause);
146:   PetscFunctionReturn(PETSC_SUCCESS);
147: }

149: static PetscErrorCode TranslateColor_Win32(PetscDraw draw, int color)
150: {
151:   /* Maps single color value into the RGB colors in our tables */
152:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
153:   windraw->currentcolor    = RGB(RedMap[color], GreenMap[color], BlueMap[color]);
154:   return PETSC_SUCCESS;
155: }

157: static PetscErrorCode AverageColorRectangle_Win32(PetscDraw draw, int c1, int c2, int c3, int c4)
158: {
159:   /* Averages colors given at points of rectangle and sets color from color table
160:     will be changed once the color gradient problem is worked out */
161:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
162:   windraw->currentcolor    = RGB(((RedMap[c1] + RedMap[c2] + RedMap[c3] + RedMap[c4]) / 4), ((GreenMap[c1] + GreenMap[c2] + GreenMap[c3] + GreenMap[c4]) / 4), ((BlueMap[c1] + BlueMap[c2] + BlueMap[c3] + BlueMap[c4]) / 4));
163:   return PETSC_SUCCESS;
164: }

166: static PetscErrorCode AverageColorTriangle_Win32(PetscDraw draw, int c1, int c2, int c3)
167: {
168:   /* Averages colors given at points of rectangle and sets color from color table
169:     will be changed once the color gradient problem is worked out */
170:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
171:   windraw->currentcolor    = RGB((RedMap[c1] + RedMap[c2] + RedMap[c3]) / 3, (GreenMap[c1] + GreenMap[c2] + GreenMap[c3]) / 3, (BlueMap[c1] + BlueMap[c2] + BlueMap[c3]) / 3);
172:   return PETSC_SUCCESS;
173: }

175: static PetscErrorCode PetscDrawRectangle_Win32(PetscDraw draw, PetscReal xl, PetscReal yl, PetscReal xr, PetscReal yr, int c1, int c2, int c3, int c4)
176: {
177:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
178:   HBRUSH           hbrush;
179:   RECT             rect;
180:   int              x1, yone, x2, y2;
181:   HDC              hdc;

183:   PetscFunctionBegin;
184:   x1   = XTRANS(draw, windraw, xl);
185:   x2   = XTRANS(draw, windraw, xr);
186:   yone = YTRANS(draw, windraw, yl);
187:   y2   = YTRANS(draw, windraw, yr);
188:   SetRect(&rect, x1, y2, x2, yone);
189:   if (c1 == c2 && c2 == c3 && c3 == c4) TranslateColor_Win32(draw, c1);
190:   else AverageColorRectangle_Win32(draw, c1, c2, c3, c4);
191:   hbrush = CreateSolidBrush(windraw->currentcolor);

193:   if (windraw->node->DoubleBuffered) hdc = windraw->node->DoubleBuffer;
194:   else hdc = windraw->node->Buffer;

196:   FillRect(hdc, &rect, hbrush);
197:   /* Forces a WM_PAINT message and erases background */
198:   InvalidateRect(windraw->hWnd, NULL, TRUE);
199:   UpdateWindow(windraw->hWnd);
200:   PetscFunctionReturn(PETSC_SUCCESS);
201: }

203: static PetscErrorCode PetscDrawLine_Win32(PetscDraw draw, PetscReal xl, PetscReal yl, PetscReal xr, PetscReal yr, int color)
204: {
205:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
206:   HPEN             hpen;
207:   int              x1, yone, x2, y2;
208:   HDC              hdc;

210:   PetscFunctionBegin;
211:   TranslateColor_Win32(draw, color);
212:   x1   = XTRANS(draw, windraw, xl);
213:   x2   = XTRANS(draw, windraw, xr);
214:   yone = YTRANS(draw, windraw, yl);
215:   y2   = YTRANS(draw, windraw, yr);
216:   hpen = CreatePen(PS_SOLID, windraw->linewidth, windraw->currentcolor);
217:   if (windraw->node->DoubleBuffered) hdc = windraw->node->DoubleBuffer;
218:   else hdc = windraw->node->Buffer;

220:   SelectPen(hdc, hpen);
221:   MoveToEx(hdc, x1, yone, NULL);
222:   LineTo(hdc, x2, y2);
223:   /* Forces a WM_PAINT message and erases background */
224:   InvalidateRect(windraw->hWnd, NULL, TRUE);
225:   UpdateWindow(windraw->hWnd);
226:   PetscFunctionReturn(PETSC_SUCCESS);
227: }

229: static PetscErrorCode PetscDrawLineSetWidth_Win32(PetscDraw draw, PetscReal width)
230: {
231:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
232:   int              averagesize, finalwidth;
233:   RECT             rect;

235:   PetscFunctionBegin;
236:   GetClientRect(windraw->hWnd, &rect);
237:   averagesize = ((rect.right - rect.left) + (rect.bottom - rect.top)) / 2;
238:   finalwidth  = (int)PetscFloorReal(averagesize * width);
239:   if (finalwidth < 1) finalwidth = 1; /* minimum size PetscDrawLine can except */

241:   windraw->linewidth = finalwidth;
242:   PetscFunctionReturn(PETSC_SUCCESS);
243: }

245: static PetscErrorCode PetscDrawLineGetWidth_Win32(PetscDraw draw, PetscReal *width)
246: {
247:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

249:   PetscFunctionBegin;
250:   *width = (PetscReal)windraw->linewidth;
251:   PetscFunctionReturn(PETSC_SUCCESS);
252: }

254: static PetscErrorCode PetscDrawPoint_Win32(PetscDraw draw, PetscReal x, PetscReal y, int color)
255: {
256:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
257:   HBRUSH           hbrush;
258:   HRGN             hrgn;
259:   int              radius;
260:   int              x1, yone;
261:   HDC              hdc;

263:   PetscFunctionBegin;
264:   TranslateColor_Win32(draw, color);
265:   x1     = XTRANS(draw, windraw, x);
266:   yone   = YTRANS(draw, windraw, y);
267:   hbrush = CreateSolidBrush(windraw->currentcolor);
268:   if (windraw->node->DoubleBuffered) hdc = windraw->node->DoubleBuffer;
269:   else hdc = windraw->node->Buffer;

271:   /* desired size is one logical pixel so just turn it on */
272:   if (windraw->pointdiameter == 1) SetPixelV(hdc, x1, yone, windraw->currentcolor);
273:   else {
274:     /* draw point around position determined */
275:     radius = windraw->pointdiameter / 2; /* integer division */
276:     hrgn   = CreateEllipticRgn(x1 - radius, yone - radius, x1 + radius, yone + radius);
277:     FillRgn(hdc, hrgn, hbrush);
278:   }
279:   /* Forces a WM_PAINT and erases background */
280:   InvalidateRect(windraw->hWnd, NULL, TRUE);
281:   UpdateWindow(windraw->hWnd);
282:   PetscFunctionReturn(PETSC_SUCCESS);
283: }

285: static PetscErrorCode PetscDrawPointSetSize_Win32(PetscDraw draw, PetscReal width)
286: {
287:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
288:   int              averagesize, diameter;
289:   RECT             rect;

291:   PetscFunctionBegin;
292:   GetClientRect(windraw->hWnd, &rect);
293:   averagesize = ((rect.right - rect.left) + (rect.bottom - rect.top)) / 2;
294:   diameter    = (int)PetscFloorReal(averagesize * width);
295:   if (diameter < 1) diameter = 1;
296:   windraw->pointdiameter = diameter;
297:   PetscFunctionReturn(PETSC_SUCCESS);
298: }

300: static PetscErrorCode PetscDrawString_Win32(PetscDraw draw, PetscReal x, PetscReal y, int color, const char *text)
301: {
302:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
303:   RECT             r;
304:   HFONT            hfont;
305:   LOGFONT          logfont;
306:   int              x1, yone;
307:   HDC              hdc;

309:   PetscFunctionBegin;
310:   x1       = XTRANS(draw, windraw, x);
311:   yone     = YTRANS(draw, windraw, y);
312:   r.bottom = yone;
313:   r.left   = x1;
314:   r.right  = x1 + 1;
315:   r.top    = yone + 1;

317:   logfont.lfHeight         = windraw->stringheight;
318:   logfont.lfWidth          = windraw->stringwidth;
319:   logfont.lfEscapement     = 0;
320:   logfont.lfOrientation    = 0;
321:   logfont.lfCharSet        = 0;
322:   logfont.lfClipPrecision  = 0;
323:   logfont.lfItalic         = 0;
324:   logfont.lfOutPrecision   = 0;
325:   logfont.lfPitchAndFamily = DEFAULT_PITCH;
326:   logfont.lfQuality        = DEFAULT_QUALITY;
327:   logfont.lfStrikeOut      = 0;
328:   logfont.lfUnderline      = 0;
329:   logfont.lfWeight         = FW_NORMAL;

331:   hfont = CreateFontIndirect(&logfont);
332:   TranslateColor_Win32(draw, color);
333:   if (windraw->node->DoubleBuffered) hdc = windraw->node->DoubleBuffer;
334:   else hdc = windraw->node->Buffer;

336:   SelectFont(hdc, hfont);
337:   SetTextColor(hdc, windraw->currentcolor);
338:   DrawText(hdc, text, lstrlen(text), &r, DT_NOCLIP);
339:   DeleteObject(hfont);
340:   /* Forces a WM_PAINT message and erases background */
341:   InvalidateRect(windraw->hWnd, NULL, TRUE);
342:   UpdateWindow(windraw->hWnd);
343:   PetscFunctionReturn(PETSC_SUCCESS);
344: }

346: static PetscErrorCode PetscDrawStringVertical_Win32(PetscDraw draw, PetscReal x, PetscReal y, int color, const char *text)
347: {
348:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
349:   RECT             r;
350:   HFONT            hfont;
351:   LOGFONT          logfont;
352:   int              x1, yone;
353:   HDC              hdc;

355:   PetscFunctionBegin;
356:   x1       = XTRANS(draw, windraw, x);
357:   yone     = YTRANS(draw, windraw, y);
358:   r.left   = x1;
359:   r.bottom = yone + 30;
360:   r.right  = x1 + 1;
361:   r.top    = yone - 30;

363:   logfont.lfEscapement     = 2700; /* Causes vertical text drawing */
364:   logfont.lfHeight         = windraw->stringheight;
365:   logfont.lfWidth          = windraw->stringwidth;
366:   logfont.lfOrientation    = 0;
367:   logfont.lfCharSet        = DEFAULT_CHARSET;
368:   logfont.lfClipPrecision  = 0;
369:   logfont.lfItalic         = 0;
370:   logfont.lfOutPrecision   = 0;
371:   logfont.lfPitchAndFamily = DEFAULT_PITCH;
372:   logfont.lfQuality        = DEFAULT_QUALITY;
373:   logfont.lfStrikeOut      = 0;
374:   logfont.lfUnderline      = 0;
375:   logfont.lfWeight         = FW_NORMAL;

377:   hfont = CreateFontIndirect(&logfont);
378:   TranslateColor_Win32(draw, color);
379:   if (windraw->node->DoubleBuffered) hdc = windraw->node->DoubleBuffer;
380:   else hdc = windraw->node->Buffer;

382:   SelectFont(hdc, hfont);
383:   SetTextColor(hdc, windraw->currentcolor);
384:   DrawText(hdc, text, lstrlen(text), &r, DT_NOCLIP | DT_SINGLELINE);
385:   DeleteObject(hfont);
386:   /* Forces a WM_PAINT message and erases background */
387:   InvalidateRect(windraw->hWnd, NULL, TRUE);
388:   UpdateWindow(windraw->hWnd);
389:   PetscFunctionReturn(PETSC_SUCCESS);
390: }

392: static PetscErrorCode PetscDrawStringSetSize_Win32(PetscDraw draw, PetscReal width, PetscReal height)
393: {
394:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
395:   int              w, h;

397:   PetscFunctionBegin;
398:   w = (int)((windraw->w) * width * (draw->port_xr - draw->port_xl) / (draw->coor_xr - draw->coor_xl));
399:   h = (int)((windraw->h) * height * (draw->port_yr - draw->port_yl) / (draw->coor_yr - draw->coor_yl));
400:   if (h < 1) h = 1;
401:   if (w < 1) w = 1;
402:   windraw->stringheight = h;
403:   windraw->stringwidth  = w;
404:   PetscFunctionReturn(PETSC_SUCCESS);
405: }
406: static PetscErrorCode PetscDrawStringGetSize_Win32(PetscDraw draw, PetscReal *width, PetscReal *height)
407: {
408:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
409:   double           scaleX  = (draw->coor_xr - draw->coor_xl) / (draw->w) * (draw->port_xr - draw->port_xl);
410:   double           scaleY  = (draw->coor_yr - draw->coor_yl) / (draw->h) * (draw->port_yr - draw->port_yl);

412:   PetscFunctionBegin;
413:   if (height) *height = (double)windraw->stringheight * scaleY;
414:   if (width) *width = (double)windraw->stringwidth * scaleX;
415:   PetscFunctionReturn(PETSC_SUCCESS);
416: }

418: static PetscErrorCode PetscDrawResizeWindow_Win32(PetscDraw draw, int w, int h)
419: {
420:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
421:   RECT             r;

423:   PetscFunctionBegin;
424:   GetWindowRect(windraw->hWnd, &r);
425:   MoveWindow(windraw->hWnd, r.left, r.top, (int)w, (int)h, TRUE);
426:   /* set all variable dealing with window dimensions */
427:   windraw->node->bitheight = windraw->h = draw->h = h;
428:   windraw->node->bitwidth = windraw->w = draw->w = w;
429:   /* set up graphic buffers with the new size of window */
430:   SetBitmapDimensionEx(windraw->node->BufferBit, w, h, NULL);
431:   if (windraw->node->DoubleBuffered) SetBitmapDimensionEx(windraw->node->DoubleBufferBit, w, h, NULL);
432:   windraw->haveresized = PETSC_TRUE;
433:   PetscFunctionReturn(PETSC_SUCCESS);
434: }

436: static PetscErrorCode PetscDrawCheckResizedWindow_Win32(PetscDraw draw)
437: {
438:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

440:   PetscFunctionBegin;
441:   PetscCheck(windraw->haveresized != 1, PETSC_COMM_SELF, PETSC_ERR_SUP, "No support for resizing windows on Microsoft Windows");
442:   PetscFunctionReturn(PETSC_SUCCESS);
443: }

445: static PetscErrorCode PetscDrawSetTitle_Win32(PetscDraw draw, const char title[])
446: {
447:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

449:   PetscFunctionBegin;
450:   SetWindowText(windraw->hWnd, title);
451:   PetscFunctionReturn(PETSC_SUCCESS);
452: }

454: static PetscErrorCode PetscDrawClear_Win32(PetscDraw draw)
455: {
456:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

458:   PetscFunctionBegin;
459:   /* clear primary buffer */
460:   ExtFloodFill(windraw->node->Buffer, 0, 0, COLOR_WINDOW, FLOODFILLBORDER);
461:   /* if exists clear secondary buffer */
462:   if (windraw->node->DoubleBuffered) ExtFloodFill(windraw->node->DoubleBuffer, 0, 0, COLOR_WINDOW, FLOODFILLBORDER);

464:   /* force WM_PAINT message so cleared buffer will show */
465:   InvalidateRect(windraw->hWnd, NULL, TRUE);
466:   UpdateWindow(windraw->hWnd);
467:   PetscFunctionReturn(PETSC_SUCCESS);
468: }

470: static PetscErrorCode PetscDrawTriangle_Win32(PetscDraw draw, PetscReal x1, PetscReal yone, PetscReal x2, PetscReal y2, PetscReal x3, PetscReal y3, int c1, int c2, int c3)
471: {
472:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
473:   HBRUSH           hbrush;
474:   HPEN             hpen;
475:   int              p1x, p1y, p2x, p2y, p3x, p3y;
476:   HDC              bit;

478:   PetscFunctionBegin;
479:   AverageColorTriangle_Win32(draw, c1, c2, c3);
480:   hbrush = CreateSolidBrush(windraw->currentcolor);
481:   hpen   = CreatePen(PS_SOLID, 0, windraw->currentcolor);
482:   p1x    = XTRANS(draw, windraw, x1);
483:   p2x    = XTRANS(draw, windraw, x2);
484:   p3x    = XTRANS(draw, windraw, x3);
485:   p1y    = YTRANS(draw, windraw, yone);
486:   p2y    = YTRANS(draw, windraw, y2);
487:   p3y    = YTRANS(draw, windraw, y3);

489:   if (windraw->node->DoubleBuffered) bit = windraw->node->DoubleBuffer;
490:   else bit = windraw->node->Buffer;

492:   BeginPath(bit);
493:   MoveToEx(bit, p1x, p1y, NULL);
494:   LineTo(bit, p2x, p2y);
495:   LineTo(bit, p3x, p3y);
496:   LineTo(bit, p1x, p1y);
497:   EndPath(bit);
498:   SelectPen(bit, hpen);
499:   SelectBrush(bit, hbrush);
500:   StrokeAndFillPath(bit);
501:   /* Forces a WM_PAINT message and erases background */
502:   InvalidateRect(windraw->hWnd, NULL, TRUE);
503:   UpdateWindow(windraw->hWnd);
504:   PetscFunctionReturn(PETSC_SUCCESS);
505: }

507: static PetscErrorCode PetscDrawSetVisible_Win32(PetscDraw draw, PetscBool visible)
508: {
509:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

511:   PetscFunctionBegin;
512:   ShowWindow(windraw->hWnd, visible ? SW_SHOWNA : SW_HIDE);
513:   PetscFunctionReturn(PETSC_SUCCESS);
514: }

516: static PetscErrorCode PetscDrawDestroy_Win32(PetscDraw draw)
517: {
518:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;

520:   PetscFunctionBegin;
521:   SendMessage(windraw->hWnd, WM_DESTROY, 0, 0);
522:   PetscFree(draw->data);
523:   PetscFunctionReturn(PETSC_SUCCESS);
524: }

526: static void MessageLoopThread_Win32(PetscDraw draw)
527: {
528:   PetscDraw_Win32 *windraw = (PetscDraw_Win32 *)draw->data;
529:   MSG              msg;
530:   HWND             hWnd        = NULL;
531:   const char       classname[] = "PETSc Window Class";
532:   WNDCLASSEX       wclass;
533:   LPVOID           lpMsgBuf;

535:   /* initialize window class parameters */
536:   wclass.cbSize        = sizeof(WNDCLASSEX);
537:   wclass.style         = CS_SAVEBITS | CS_HREDRAW | CS_VREDRAW;
538:   wclass.lpfnWndProc   = (WNDPROC)PetscWndProc;
539:   wclass.cbClsExtra    = 0;
540:   wclass.cbWndExtra    = 0;
541:   wclass.hInstance     = NULL;
542:   wclass.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
543:   wclass.hCursor       = LoadCursor(NULL, IDC_ARROW);
544:   wclass.hbrBackground = GetStockBrush(WHITE_BRUSH);
545:   wclass.lpszMenuName  = NULL;
546:   wclass.lpszClassName = classname;
547:   wclass.hIconSm       = NULL;

549:   RegisterClassEx(&wclass);

551:   hWnd = CreateWindowEx(0, classname, NULL, WS_OVERLAPPEDWINDOW, draw->x, draw->y, draw->w, draw->h, NULL, NULL, hInst, NULL);

553:   if (!hWnd) {
554:     lpMsgBuf = (LPVOID) "Window Not Successfully Created";
555:     MessageBox(NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION);
556:     LocalFree(lpMsgBuf);
557:     exit(0);
558:   }
559:   windraw->hWnd = hWnd;
560:   /* display and update new window */
561:   ShowWindow(hWnd, SW_SHOWNORMAL);
562:   UpdateWindow(hWnd);
563:   SetEvent(windraw->hReadyEvent);

565:   while (GetMessage(&msg, hWnd, 0, 0)) {
566:     TranslateMessage(&msg);
567:     DispatchMessage(&msg);
568:   }
569:   return;
570: }

572: static struct _PetscDrawOps DvOps = {PetscDrawSetDoubleBuffer_Win32, PetscDrawFlush_Win32, PetscDrawLine_Win32, PetscDrawLineSetWidth_Win32, PetscDrawLineGetWidth_Win32, PetscDrawPoint_Win32, PetscDrawPointSetSize_Win32, PetscDrawString_Win32, PetscDrawStringVertical_Win32, PetscDrawStringSetSize_Win32, PetscDrawStringGetSize_Win32, 0, PetscDrawClear_Win32, PetscDrawRectangle_Win32, PetscDrawTriangle_Win32, 0, PetscDrawGetMouseButton_Win32, PetscDrawPause_Win32, 0, 0, PetscDrawGetPopup_Win32, PetscDrawSetTitle_Win32, PetscDrawCheckResizedWindow_Win32, PetscDrawResizeWindow_Win32, PetscDrawDestroy_Win32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, PetscDrawSetVisible_Win32};

574: static PetscErrorCode PetscDrawGetPopup_Win32(PetscDraw draw, PetscDraw *popup)
575: {
576:   PetscDraw_Win32 *win = (PetscDraw_Win32 *)draw->data;
577:   PetscBool        flg = PETSC_TRUE;

579:   PetscFunctionBegin;
580:   PetscCall(PetscOptionsGetBool(((PetscObject)draw)->options, ((PetscObject)draw)->prefix, "-draw_popup", &flg, NULL));
581:   if (flg) {
582:     PetscCall(PetscDrawCreate(PetscObjectComm((PetscObject)draw), NULL, NULL, win->x, win->y + win->h + 36, 220, 220, popup));
583:     PetscCall(PetscDrawSetType(*popup, PETSC_DRAW_WIN32));
584:     draw->popup = *popup;
585:   } else {
586:     *popup = NULL;
587:   }
588:   PetscFunctionReturn(PETSC_SUCCESS);
589: }
590: PETSC_EXTERN PetscErrorCode PetscDrawCreate_Win32(PetscDraw draw)
591: {
592:   PetscDraw_Win32 *windraw;
593:   HANDLE           hThread = NULL;
594:   WindowNode       newnode;

596:   PetscFunctionBegin;
597:   PetscCall(PetscNew(&windraw));
598:   draw->data = windraw;

600:   /* the following is temporary fix for initializing a global datastructure */
601:   if (!g_hWindowListMutex) g_hWindowListMutex = CreateMutex(NULL, FALSE, NULL);
602:   draw->ops[0] = DvOps;

604:   windraw->hReadyEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
605:   /* makes call to MessageLoopThread to creat window and attach a thread */
606:   CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)MessageLoopThread_Win32, draw, 0, (LPDWORD)hThread);
607:   CloseHandle(hThread);
608:   WaitForSingleObject(windraw->hReadyEvent, INFINITE);
609:   CloseHandle(windraw->hReadyEvent);
610:   WaitForSingleObject(g_hWindowListMutex, INFINITE);

612:   PetscCall(PetscNew(&newnode));
613:   newnode->MouseListHead = NULL;
614:   newnode->MouseListTail = NULL;
615:   newnode->wnext         = WindowListHead;
616:   newnode->wprev         = NULL;
617:   newnode->hWnd          = windraw->hWnd;
618:   if (WindowListHead) WindowListHead->wprev = newnode;
619:   WindowListHead = newnode;
620:   windraw->hdc   = GetDC(windraw->hWnd);

622:   windraw->stringheight  = 10;
623:   windraw->stringwidth   = 6;
624:   windraw->linewidth     = 1; /* default pixel sizes of graphics until user changes them */
625:   windraw->pointdiameter = 1;
626:   windraw->node          = newnode;

628:   windraw->x = draw->x;
629:   windraw->y = draw->y;
630:   windraw->w = newnode->bitwidth = draw->w;
631:   windraw->h = newnode->bitheight = draw->h;

633:   /* Create and initialize primary graphics buffer */
634:   newnode->Buffer    = CreateCompatibleDC(windraw->hdc);
635:   newnode->BufferBit = CreateCompatibleBitmap(windraw->hdc, windraw->w, windraw->h);
636:   newnode->store     = SelectObject(newnode->Buffer, newnode->BufferBit);
637:   ExtFloodFill(newnode->Buffer, 0, 0, COLOR_WINDOW, FLOODFILLBORDER);

639:   newnode->event          = CreateEvent(NULL, TRUE, FALSE, NULL);
640:   newnode->DoubleBuffered = PETSC_FALSE;

642:   ReleaseDC(windraw->hWnd, windraw->hdc);
643:   ReleaseMutex(g_hWindowListMutex);
644:   PetscFunctionReturn(PETSC_SUCCESS);
645: }

647: /* FUNCTION: PetscWndProc(HWND, unsigned, WORD, LONG)
648:    PURPOSE:  Processes messages for the main window.
649:    WM_COMMAND  - process the application menu
650:    WM_PAINT    - Paint the main window
651:    WM_DESTROY  - post a quit message and return */

653: LRESULT CALLBACK PetscWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
654: {
655:   int wmId;

657:   switch (message) {
658:     HANDLE_MSG(hWnd, WM_PAINT, OnPaint_Win32);
659:     HANDLE_MSG(hWnd, WM_DESTROY, OnDestroy_Win32);
660:   case WM_COMMAND:
661:     wmId = LOWORD(wParam);
662:     /* Parse the menu selections:*/
663:     switch (wmId) {
664:     case IDM_EXIT:
665:       DestroyWindow(hWnd);
666:       break;
667:     default:
668:       return DefWindowProc(hWnd, message, wParam, lParam);
669:     }
670:     break;
671:   case WM_LBUTTONUP:
672:     MouseRecord_Win32(hWnd, PETSC_BUTTON_LEFT);
673:     break;
674:   case WM_RBUTTONUP:
675:     MouseRecord_Win32(hWnd, PETSC_BUTTON_RIGHT);
676:     break;
677:   case WM_MBUTTONUP:
678:     MouseRecord_Win32(hWnd, PETSC_BUTTON_CENTER);
679:     break;
680:   default:
681:     return DefWindowProc(hWnd, message, wParam, lParam);
682:   }
683:   return 0;
684: }

686: static void OnPaint_Win32(HWND hWnd)
687: {
688:   PAINTSTRUCT ps;
689:   HDC         hdc;
690:   WindowNode  current = NULL;

692:   InvalidateRect(hWnd, NULL, TRUE);
693:   WaitForSingleObject(g_hWindowListMutex, INFINITE);
694:   current = WindowListHead;
695:   hdc     = BeginPaint(hWnd, &ps);

697:   while (current) {
698:     if (current->hWnd == hWnd) {
699:       /* flushes primary buffer to window */
700:       BitBlt(hdc, 0, 0, GetDeviceCaps(hdc, HORZRES), GetDeviceCaps(hdc, VERTRES), current->Buffer, 0, 0, SRCCOPY);

702:       /* StretchBlt(hdc,0,0,w,h,
703:         current->Buffer,0,0,current->bitwidth,current->bitheight,SRCCOPY); */
704:       break;
705:     }
706:     current = current->wnext;
707:   }
708:   EndPaint(hWnd, &ps);
709:   ReleaseMutex(g_hWindowListMutex);
710:   return;
711: }

713: static PetscErrorCode MouseRecord_Win32(HWND hWnd, PetscDrawButton button)
714: {
715:   /* Called by all three mouse button actions
716:     Records needed mouse data in windows data structure */
717:   WindowNode current = NULL;
718:   MouseNode  newnode;
719:   POINT      mousepos;

721:   PetscFunctionBegin;
722:   WaitForSingleObject(g_hWindowListMutex, INFINITE);
723:   current = WindowListHead;
724:   if (current->IsGetMouseOn == TRUE) {
725:     SetEvent(current->event);
726:     while (current) {
727:       if (current->hWnd == hWnd) {
728:         PetscCall(PetscNew(&newnode));
729:         newnode->Button = button;
730:         GetCursorPos(&mousepos);
731:         newnode->user.x = mousepos.x;
732:         newnode->user.y = mousepos.y;
733:         ScreenToClient(hWnd, &mousepos);
734:         newnode->phys.x = mousepos.x;
735:         newnode->phys.y = mousepos.y;
736:         if (!current->MouseListTail) {
737:           current->MouseListHead = newnode;
738:           current->MouseListTail = newnode;
739:         } else {
740:           current->MouseListTail->mnext = newnode;
741:           current->MouseListTail        = newnode;
742:         }
743:         newnode->mnext = NULL;

745:         break;
746:       }
747:       current = current->wnext;
748:     }
749:   }
750:   ReleaseMutex(g_hWindowListMutex);
751:   PetscFunctionReturn(PETSC_SUCCESS);
752: }

754: static void OnDestroy_Win32(HWND hWnd)
755: {
756:   /* searches linked list of window data and frees corresponding memory */
757:   WindowNode current;

759:   PetscFunctionBegin;
760:   WaitForSingleObject(g_hWindowListMutex, INFINITE);
761:   current = WindowListHead;

763:   SetEvent(current->event);
764:   while (current) {
765:     if (current->hWnd == hWnd) {
766:       if (current->wprev) current->wprev->wnext = current->wnext;
767:       else WindowListHead = current->wnext;
768:       if (current->MouseListHead) deletemouselist_Win32(current);
769:       else PetscFree(current);
770:       break;
771:     }
772:     current = current->wnext;
773:   }
774:   ReleaseMutex(g_hWindowListMutex);
775:   PostQuitMessage(0);
776:   PetscFunctionReturnVoid();
777: }