SelectionWinProc

LRESULT CALLBACK SelectionWinProc ( HWND  hwnd, UINT  message, WPARAM  wParam, LPARAM  lParam  ) Definition at line 58 of file selection.c. Referenced by _tWinMain(). { switch (message) { case WM_PAINT: { if (!moving) { HDC hDC = GetDC(hwnd); DefWindowProc(hwnd, message, wParam, lParam); SelectionFrame(hDC, 1, 1, rectSel_dest[2] * zoom / 1000 + 5, rectSel_dest[3] * zoom / 1000 + 5); ReleaseDC(hwnd, hDC); } break; } case WM_LBUTTONDOWN: xPos = LOWORD(lParam); yPos = HIWORD(lParam); SetCapture(hwnd); if (action != 0) SetCursor(LoadCursor(NULL, cursors[action])); moving = TRUE; break; case WM_MOUSEMOVE: if (moving) { TCHAR sizeStr[100]; int xDelta; int yDelta; resetToU1(); xFrac += (short)LOWORD(lParam) - xPos; yFrac += (short)HIWORD(lParam) - yPos; if (zoom < 1000) { xDelta = xFrac * 1000 / zoom; xFrac = 0; yDelta = yFrac * 1000 / zoom; yFrac = 0; } else { xDelta = xFrac * 1000 / zoom; xFrac -= (xFrac * 1000 / zoom) * zoom / 1000; yDelta = yFrac * 1000 / zoom; yFrac -= (yFrac * 1000 / zoom) * zoom / 1000; } switch (action) { case 0: rectSel_dest[0] += xDelta; rectSel_dest[1] += yDelta; break; case 1: rectSel_dest[0] += xDelta; rectSel_dest[1] += yDelta; rectSel_dest[2] -= xDelta; rectSel_dest[3] -= yDelta; break; case 2: rectSel_dest[1] += yDelta; rectSel_dest[3] -= yDelta; break; case 3: rectSel_dest[2] += xDelta; rectSel_dest[1] += yDelta; break; case 4: rectSel_dest[0] += xDelta; rectSel_dest[2] -= xDelta; break; case 5: rectSel_dest[2] += xDelta; break; case 6: rectSel_dest[0] += xDelta; rectSel_dest[2] -= xDelta; rectSel_dest[3] += yDelta; break; case 7: rectSel_dest[3] += yDelta; break; case 8: rectSel_dest[2] += xDelta; rectSel_dest[3] += yDelta; break; } _stprintf(sizeStr, _T("%d x %d"), rectSel_dest[2], rectSel_dest[3]); SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) sizeStr); if (action != 0) StretchBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, GetDIBWidth(hSelBm), GetDIBHeight(hSelBm), SRCCOPY); else if (transpBg == 0) MaskBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, hSelMask, 0, 0, MAKEROP4(SRCCOPY, SRCAND)); else { HBITMAP tempMask; HBRUSH oldBrush; HDC tempDC; tempMask = CreateBitmap(rectSel_dest[2], rectSel_dest[3], 1, 1, NULL); oldBrush = SelectObject(hSelDC, CreateSolidBrush(bgColor)); tempDC = CreateCompatibleDC(hSelDC); SelectObject(tempDC, tempMask); MaskBlt(tempDC, 0, 0, rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, hSelMask, 0, 0, MAKEROP4(NOTSRCCOPY, BLACKNESS)); DeleteDC(tempDC); DeleteObject(SelectObject(hSelDC, oldBrush)); MaskBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, tempMask, 0, 0, MAKEROP4(SRCCOPY, SRCAND)); DeleteObject(tempMask); } SendMessage(hImageArea, WM_PAINT, 0, 0); xPos = LOWORD(lParam); yPos = HIWORD(lParam); //SendMessage(hwnd, WM_PAINT, 0, 0); } else { int w = rectSel_dest[2] * zoom / 1000 + 6; int h = rectSel_dest[3] * zoom / 1000 + 6; xPos = LOWORD(lParam); yPos = HIWORD(lParam); SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) NULL); action = identifyCorner(xPos, yPos, w, h); if (action != 0) SetCursor(LoadCursor(NULL, cursors[action])); } break; case WM_LBUTTONUP: if (moving) { moving = FALSE; ReleaseCapture(); if (action != 0) { HDC hTempDC; HBITMAP hTempBm; hTempDC = CreateCompatibleDC(hSelDC); hTempBm = CreateDIBWithProperties(rectSel_dest[2], rectSel_dest[3]); SelectObject(hTempDC, hTempBm); SelectObject(hSelDC, hSelBm); StretchBlt(hTempDC, 0, 0, rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, GetDIBWidth(hSelBm), GetDIBHeight(hSelBm), SRCCOPY); DeleteObject(hSelBm); hSelBm = hTempBm; hTempBm = CreateBitmap(rectSel_dest[2], rectSel_dest[3], 1, 1, NULL); SelectObject(hTempDC, hTempBm); SelectObject(hSelDC, hSelMask); StretchBlt(hTempDC, 0, 0, rectSel_dest[2], rectSel_dest[3], hSelDC, 0, 0, GetDIBWidth(hSelMask), GetDIBHeight(hSelMask), SRCCOPY); DeleteObject(hSelMask); hSelMask = hTempBm; SelectObject(hSelDC, hSelBm); DeleteDC(hTempDC); } placeSelWin(); ShowWindow(hSelection, SW_HIDE); ShowWindow(hSelection, SW_SHOW); } break; default: return DefWindowProc(hwnd, message, wParam, lParam); } return 0; }