src/msw/gaugemsw.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gaugemsw.cpp
   3 // Purpose:     wxGaugeMSW class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "gauge.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/defs.h"
  25 #endif
  26
  27 #if USE_GAUGE
  28
  29 #include "wx/msw/gaugemsw.h"
  30 #include "wx/msw/private.h"
  31
  32 /* gas gauge graph control messages--class "zYzGauge" */
  33 #define ZYZG_SETRANGE       (WM_USER + 0)
  34 #define ZYZG_GETRANGE       (WM_USER + 1)
  35 #define ZYZG_SETPOSITION    (WM_USER + 2)
  36 #define ZYZG_GETPOSITION    (WM_USER + 3)
  37 #define ZYZG_SETORIENTATION (WM_USER + 4)
  38 #define ZYZG_GETORIENTATION (WM_USER + 5)
  39 #define ZYZG_SETFGCOLOR     (WM_USER + 6)
  40 #define ZYZG_GETFGCOLOR     (WM_USER + 7)
  41 #define ZYZG_SETBKCOLOR     (WM_USER + 8)
  42 #define ZYZG_GETBKCOLOR     (WM_USER + 9)
  43 #define ZYZG_SETWIDTH3D     (WM_USER + 10)
  44 #define ZYZG_GETWIDTH3D     (WM_USER + 11)
  45 #define ZYZG_SETBEZELFACE   (WM_USER + 12)
  46 #define ZYZG_GETBEZELFACE   (WM_USER + 13)
  47 #define ZYZG_SETDELTAPOS    (WM_USER + 14)
  48
  49
  50 /* orientations for ZYZG_WW_ORIENTATION */
  51 #define ZYZG_ORIENT_LEFTTORIGHT     0
  52 #define ZYZG_ORIENT_RIGHTTOLEFT     1
  53 #define ZYZG_ORIENT_BOTTOMTOTOP     2
  54 #define ZYZG_ORIENT_TOPTOBOTTOM     3
  55
  56 /* gauge styles */
  57 #define ZYZGS_3D        0x8000L     /* control will be 3D       */
  58
  59 /* public function prototypes */
  60 BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance);
  61
  62 #if !USE_SHARED_LIBRARY
  63 IMPLEMENT_DYNAMIC_CLASS(wxGaugeMSW, wxControl)
  64 #endif
  65
  66 bool wxGaugeMSW::Create(wxWindow *parent, wxWindowID id,
  67            int range,
  68            const wxPoint& pos,
  69            const wxSize& size,
  70            long style,
  71            const wxValidator& validator,
  72            const wxString& name)
  73 {
  74   static bool wxGaugeMSWInitialised = FALSE;
  75
  76   if ( !wxGaugeMSWInitialised )
  77   {
  78     if (!gaugeInit((HWND) wxGetInstance()))
  79         wxFatalError("Cannot initalize Gauge library");
  80         wxGaugeMSWInitialised = TRUE;
  81   }
  82
  83   SetName(name);
  84   SetValidator(validator);
  85
  86   if (parent) parent->AddChild(this);
  87   m_rangeMax = range;
  88
  89   SetBackgroundColour(parent->GetDefaultBackgroundColour()) ;
  90   SetForegroundColour(parent->GetDefaultForegroundColour()) ;
  91
  92   m_windowStyle = style;
  93
  94   if ( id == -1 )
  95         m_windowId = (int)NewControlId();
  96   else
  97         m_windowId = id;
  98
  99   int x = pos.x;
 100   int y = pos.y;
 101   int width = size.x;
 102   int height = size.y;
 103
 104   long msFlags = WS_CHILD | WS_VISIBLE | WS_TABSTOP;
 105   msFlags |= ZYZGS_3D;
 106
 107   HWND wx_button =
 108       CreateWindowEx(MakeExtendedStyle(m_windowStyle), "zYzGauge", NULL, msFlags,
 109                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
 110                     wxGetInstance(), NULL);
 111
 112   m_hWnd = (WXHWND)wx_button;
 113
 114   // Subclass again for purposes of dialog editing mode
 115   SubclassWin((WXHWND)wx_button);
 116
 117   int wOrient = 0;
 118
 119   if (m_windowStyle & wxGA_HORIZONTAL)
 120     wOrient = ZYZG_ORIENT_LEFTTORIGHT;
 121   else
 122     wOrient = ZYZG_ORIENT_BOTTOMTOTOP;
 123
 124   SendMessage(wx_button, ZYZG_SETORIENTATION, wOrient, 0);
 125   SendMessage(wx_button, ZYZG_SETRANGE, range, 0);
 126
 127   SendMessage((HWND) GetHWND(), ZYZG_SETFGCOLOR, 0, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 128   SendMessage((HWND) GetHWND(), ZYZG_SETBKCOLOR, 0, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 129
 130   SetFont(* parent->GetFont());
 131
 132   if (width == -1)
 133     width = 50;
 134   if (height == -1)
 135     height = 50;
 136   SetSize(x, y, width, height);
 137
 138   ShowWindow((HWND) GetHWND(), SW_SHOW);
 139
 140   return TRUE;
 141 }
 142
 143 void wxGaugeMSW::SetSize(int x, int y, int width, int height, int sizeFlags)
 144 {
 145   int currentX, currentY;
 146   GetPosition(&currentX, &currentY);
 147   int x1 = x;
 148   int y1 = y;
 149   int w1 = width;
 150   int h1 = height;
 151
 152   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 153     x1 = currentX;
 154   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 155     y1 = currentY;
 156
 157   // If we're prepared to use the existing size, then...
 158   if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 159   {
 160     GetSize(&w1, &h1);
 161   }
 162
 163   // Deal with default size (using -1 values)
 164   if (w1<=0)
 165     w1 = DEFAULT_ITEM_WIDTH;
 166
 167   if (h1<=0)
 168     h1 = DEFAULT_ITEM_HEIGHT;
 169
 170   MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 171 }
 172
 173 void wxGaugeMSW::SetShadowWidth(int w)
 174 {
 175   SendMessage((HWND) GetHWND(), ZYZG_SETWIDTH3D, w, 0);
 176 }
 177
 178 void wxGaugeMSW::SetBezelFace(int w)
 179 {
 180   SendMessage((HWND) GetHWND(), ZYZG_SETBEZELFACE, w, 0);
 181 }
 182
 183 void wxGaugeMSW::SetRange(int r)
 184 {
 185   m_rangeMax = r;
 186
 187   SendMessage((HWND) GetHWND(), ZYZG_SETRANGE, r, 0);
 188 }
 189
 190 void wxGaugeMSW::SetValue(int pos)
 191 {
 192   m_gaugePos = pos;
 193
 194   SendMessage((HWND) GetHWND(), ZYZG_SETPOSITION, pos, 0);
 195 }
 196
 197 int wxGaugeMSW::GetShadowWidth(void) const
 198 {
 199   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETWIDTH3D, 0, 0);
 200 }
 201
 202 int wxGaugeMSW::GetBezelFace(void) const
 203 {
 204   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETBEZELFACE, 0, 0);
 205 }
 206
 207 int wxGaugeMSW::GetRange(void) const
 208 {
 209   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETRANGE, 0, 0);
 210 }
 211
 212 int wxGaugeMSW::GetValue(void) const
 213 {
 214   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETPOSITION, 0, 0);
 215 }
 216
 217 void wxGaugeMSW::SetForegroundColour(const wxColour& col)
 218 {
 219   m_foregroundColour = col ;
 220   SendMessage((HWND) GetHWND(), ZYZG_SETFGCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 221 }
 222
 223 void wxGaugeMSW::SetBackgroundColour(const wxColour& col)
 224 {
 225   m_backgroundColour = col ;
 226   SendMessage((HWND) GetHWND(), ZYZG_SETBKCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 227 }
 228
 229
 230 /** zyz3d.c
 231  *
 232  *  DESCRIPTION:
 233  *      This module contains functions for creating nifty 3D borders
 234  *      around controls like zYzGauge.
 235  *
 236  *  HISTORY:
 237  *      3/14/91     cjp     put in this comment
 238  *      6/19/92     cjp     touched it a bit
 239  *
 240  ** cjp */
 241 // COPYRIGHT:
 242 //
 243 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 244 //
 245 //   You have a royalty-free right to use, modify, reproduce and
 246 //   distribute the Sample Files (and/or any modified version) in
 247 //   any way you find useful, provided that you agree that
 248 //   Microsoft has no warranty obligations or liability for any
 249 //   Sample Application Files which are modified.
 250 //
 251
 252
 253 /* get the includes we need */
 254 #include <windows.h>
 255
 256 /* misc. control flag defines */
 257 #define DRAW3D_IN           0x0001
 258 #define DRAW3D_OUT          0x0002
 259
 260 #define DRAW3D_TOPLINE      0x0004
 261 #define DRAW3D_BOTTOMLINE   0x0008
 262 #define DRAW3D_LEFTLINE     0x0010
 263 #define DRAW3D_RIGHTLINE    0x0020
 264
 265
 266 /* public function prototypes */
 267 void FAR PASCAL Draw3DFaceFrame(HDC, LPRECT, WORD);
 268 void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD);
 269 void FAR PASCAL Draw3DLine(HDC, WORD, WORD, WORD, WORD, WORD);
 270
 271
 272 /** void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 273  *
 274  *  DESCRIPTION:
 275  *      This function draws a flat frame with the current button-face
 276  *      color.
 277  *
 278  *  ARGUMENTS:
 279  *      HDC hdc     :   The DC to draw into.
 280  *
 281  *      LPRECT rc   :   The containing rect for the new frame.
 282  *
 283  *      WORD wWidth :   The width of the frame to draw.
 284  *
 285  *  RETURN (void FAR PASCAL):
 286  *      The frame will have been drawn into the DC.
 287  *
 288  *  NOTES:
 289  *
 290  ** cjp */
 291
 292 void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 293 {
 294     RECT    rc1;
 295     DWORD   rgbOld;
 296
 297     /* don't go through a bunch of work if we don't have to */
 298     if (!wWidth)
 299         return;
 300
 301     /* set up color to be button-face color--so it may not be gray */
 302     rgbOld = SetBkColor(hdc, GetSysColor(COLOR_BTNFACE));
 303
 304     /* perform CopyRect w/o bloody windows style overhead */
 305     rc1 = *rc;
 306
 307     /* top */
 308     rc1.top = rc->top;
 309     rc1.left = rc->left;
 310     rc1.bottom = rc->top + wWidth;
 311     rc1.right = rc->right;
 312
 313     /* blast it out */
 314     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 315
 316     /* right */
 317     rc1.left = rc->right - wWidth;
 318     rc1.bottom = rc->bottom;
 319
 320     /* blast this part now */
 321     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 322
 323     /* left */
 324     rc1.left = rc->left;
 325     rc1.right = rc->left + wWidth;
 326
 327     /* and another part */
 328     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 329
 330     /* bottom */
 331     rc1.right = rc->right;
 332     rc1.top = rc->bottom - wWidth;
 333
 334     /* finish it off */
 335     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 336
 337     /* restore the old bk color */
 338     SetBkColor(hdc, rgbOld);
 339 } /* Draw3DFaceFrame() */
 340
 341
 342 /** void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD)
 343  *
 344  *  DESCRIPTION:
 345  *      Draws a 3D rectangle that is shaded.  wFlags can be used to
 346  *      control how the rectangle looks.
 347  *
 348  *  ARGUMENTS:
 349  *      HDC hdc             :   Handle to the device context that will be
 350  *                              used to display the rectangle.
 351  *
 352  *      RECT rect           :   A rectangle describing the dimensions of
 353  *                              the rectangle in device coordinates.
 354  *
 355  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 356  *
 357  *      WORD wFlags         :   The following flags may be passed to describe
 358  *                              the style of the rectangle:
 359  *
 360  *                              DRAW3D_IN   :   The shadow is drawn such that
 361  *                              the box appears to be sunk in to the screen.
 362  *                              This is default if 0 is passed.
 363  *
 364  *                              DRAW3D_OUT  :   The shadow is drawn such that
 365  *                              the box appears to be sticking out of the
 366  *                              screen.
 367  *
 368  *  RETURN (void FAR PASCAL):
 369  *      The 3D looking rectangle will have been drawn into the DC.
 370  *
 371  *  NOTES:
 372  *
 373  ** cjp */
 374
 375 void FAR PASCAL Draw3DRect(HDC hdc, LPRECT lpRect,
 376                                WORD wShadowWidth, WORD wFlags)
 377 {
 378     /* sanity check--don't work if you don't have to! */
 379     if (!wShadowWidth || !RectVisible(hdc, lpRect))
 380         return;
 381
 382     /* draw the top line */
 383     Draw3DLine(hdc, lpRect->left, lpRect->top,
 384                     lpRect->right - lpRect->left,
 385                     wShadowWidth, DRAW3D_TOPLINE | wFlags);
 386
 387     /* right line */
 388     Draw3DLine(hdc, lpRect->right, lpRect->top,
 389                     lpRect->bottom - lpRect->top,
 390                     wShadowWidth, DRAW3D_RIGHTLINE | wFlags);
 391
 392     /* bottom line */
 393     Draw3DLine(hdc, lpRect->left, lpRect->bottom,
 394                     lpRect->right - lpRect->left,
 395                     wShadowWidth, DRAW3D_BOTTOMLINE | wFlags);
 396
 397     /* left line */
 398     Draw3DLine(hdc, lpRect->left, lpRect->top,
 399                     lpRect->bottom - lpRect->top,
 400                     wShadowWidth, DRAW3D_LEFTLINE | wFlags);
 401 } /* Draw3DRect() */
 402
 403
 404 /** void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 405  *
 406  *  DESCRIPTION:
 407  *      Draws a 3D line that can be used to make a 3D box.
 408  *
 409  *  ARGUMENTS:
 410  *      HDC hdc             :   Handle to the device context that will be
 411  *                              used to display the 3D line.
 412  *
 413  *      WORD x, y           :   Coordinates of the beginning of the line.
 414  *                              These coordinates are in device units and
 415  *                              represent the _outside_ most point. Horiz-
 416  *                              ontal lines are drawn from left to right and
 417  *                              vertical lines are drawn from top to bottom.
 418  *
 419  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 420  *
 421  *      WORD  wFlags        :   The following flags may be passed to
 422  *                              describe the style of the 3D line:
 423  *
 424  *                              DRAW3D_IN   :   The shadow is drawn such that
 425  *                              the box appears to be sunk in to the screen.
 426  *                              This is default if 0 is passed.
 427  *
 428  *                              DRAW3D_OUT  :   The shadow is drawn such that
 429  *                              the box appears to be sticking out of the
 430  *                              screen.
 431  *
 432  *                              DRAW3D_TOPLINE, _BOTTOMLINE, _LEFTLINE, and
 433  *                              _RIGHTLINE  :   Specifies that a "top",
 434  *                              "Bottom", "Left", or"Right" line is to be
 435  *                              drawn.
 436  *
 437  *  RETURN (void FAR PASCAL):
 438  *      The line will have been drawn into the DC.
 439  *
 440  *  NOTES:
 441  *
 442  ** cjp */
 443
 444 void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 445                                WORD wShadowWidth, WORD wFlags)
 446 {
 447     HBRUSH  hOldBrush;
 448     HPEN    hOldPen;
 449     BOOL    fDark;
 450     POINT   Point[ 4 ];         /* define a polgon with 4 points    */
 451
 452     /* if width is zero, don't do nothin'! */
 453     if (!wShadowWidth)
 454         return;
 455
 456     /* define shape of polygon--origin is always the same */
 457     Point[0].x = x;
 458     Point[0].y = y;
 459
 460     /*  To do this we'll simply draw a polygon with four sides, using
 461      *  the appropriate brush.  I dare you to ask me why this isn't a
 462      *  switch/case!
 463      */
 464     if (wFlags & DRAW3D_TOPLINE)
 465     {
 466         /* across to right */
 467         Point[1].x = x + nLen - (wShadowWidth == 1 ? 1 : 0);
 468         Point[1].y = y;
 469
 470         /* down/left */
 471         Point[2].x = x + nLen - wShadowWidth;
 472         Point[2].y = y + wShadowWidth;
 473
 474         /* accross to left */
 475         Point[3].x = x + wShadowWidth;
 476         Point[3].y = y + wShadowWidth;
 477
 478         /* select 'dark' brush if 'in'--'light' for 'out' */
 479         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 480     }
 481
 482     /* possibly the bottom? */
 483     else if (wFlags & DRAW3D_BOTTOMLINE)
 484     {
 485         /* across to right */
 486         Point[1].x = x + nLen;
 487         Point[1].y = y;
 488
 489         /* up/left */
 490         Point[2].x = x + nLen - wShadowWidth;
 491         Point[2].y = y - wShadowWidth;
 492
 493         /* accross to left */
 494         Point[3].x = x + wShadowWidth;
 495         Point[3].y = y - wShadowWidth;
 496
 497         /* select 'light' brush if 'in' */
 498         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 499     }
 500
 501     /* ok, it's gotta be left? */
 502     else if (wFlags & DRAW3D_LEFTLINE)
 503     {
 504         /* down */
 505         Point[1].x = x;
 506         Point[1].y = y + nLen - (wShadowWidth == 1 ? 1 : 0);
 507
 508         /* up/right */
 509         Point[2].x = x + wShadowWidth;
 510         Point[2].y = y + nLen - wShadowWidth;
 511
 512         /* down */
 513         Point[3].x = x + wShadowWidth;
 514         Point[3].y = y + wShadowWidth;
 515
 516         /* select 'dark' brush if 'in'--'light' for 'out' */
 517         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 518     }
 519
 520     /* well maybe it's for the right side? */
 521     else if (wFlags & DRAW3D_RIGHTLINE)
 522     {
 523         /* down */
 524         Point[1].x = x;
 525         Point[1].y = y + nLen;
 526
 527         /* up/left */
 528         Point[2].x = x - wShadowWidth;
 529         Point[2].y = y + nLen - wShadowWidth;
 530
 531         /* up */
 532         Point[3].x = x - wShadowWidth;
 533         Point[3].y = y + wShadowWidth;
 534
 535         /* select 'light' brush if 'in' */
 536         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 537     }
 538
 539     /* bad drugs? */
 540     else return;
 541
 542     /* select NULL_PEN for no borders */
 543     hOldPen = SelectObject(hdc, GetStockObject(NULL_PEN));
 544
 545     /* select the appropriate color for the fill */
 546     if (fDark)
 547         hOldBrush = SelectObject(hdc, GetStockObject(GRAY_BRUSH));
 548     else
 549         hOldBrush = SelectObject(hdc, GetStockObject(WHITE_BRUSH));
 550
 551     /* finally, draw the dern thing */
 552     Polygon(hdc, (LPPOINT)&Point, 4);
 553
 554     /* restore what we killed */
 555     SelectObject(hdc, hOldBrush);
 556     SelectObject(hdc, hOldPen);
 557 } /* Draw3DLine() */
 558
 559 /** EOF: zyz3d.c **/
 560
 561 /** zyzgauge.c
 562  *
 563  *  DESCRIPTION:
 564  *      Yet another 'Gas Gauge Custom Control.'  This control gives you
 565  *      a 'progress bar' class (named zYzGauge) for use in your applications.
 566  *      You can set the range, position, font, color, orientation, and 3d
 567  *      effect of the gauge by sending messages to the control.
 568  *
 569  *      Before you can use this control, you MUST first export the window
 570  *      procedure for the control (or define it with the _export keyword):
 571  *
 572  *          EXPORTS     gaugeWndProc
 573  *
 574  *      You then need initialize the class before you use it:
 575  *
 576  *          if (!gaugeInit(hInstance))
 577  *              die a horrible death
 578  *          else
 579  *              you are good to go
 580  *
 581  *      The colors used by the control default to black and white if you
 582  *      are running on a mono-display.  They default to blue and white
 583  *      if you are on a color display.  You enable the 3D effect by setting
 584  *      the ZYZGS_3D style flag in the styles field of the control (like
 585  *      any other control).
 586  *
 587  *      To select your own colors, you can send the ZYZG_SETFGCOLOR and
 588  *      ZYZG_SETBKCOLOR messages to set the foreground (percent done) and
 589  *      background (percent not done) colors.  The lParam is the RGB()
 590  *      value--wParam is ignored.
 591  *
 592  *      In all of the following ZYZG_??? messages, the arguments are
 593  *      WORDS.  If you are setting parameters, the value is sent as
 594  *      the wParam (lParam is ignored).  If you are getting parameters,
 595  *      the value is returned as a LONG and should be cast to a *signed*
 596  *      integer.
 597  *
 598  *      To set the depth of the 3D effect (if enabled), you can send the
 599  *      ZYZG_SETBEZELFACE and ZYZG_SETWIDTH3D messages.  The bezel face
 600  *      is the flat top on the 3D border--its color will be that of the
 601  *      button-face.  The 3D width is the width of the bezel itself; inside
 602  *      and outside.  The light color is white, the dark color is gray.
 603  *      Both widths *can* be zero--both default to 2 which looks to me.
 604  *
 605  *      The range of the control can be set by sending the ZYZG_SETRANGE
 606  *      message to the control.  It can be any integer from 1 to 32767.
 607  *      What this specifies is the number of pieces that create a whole.
 608  *      The default is 100.  You can get the current range setting by
 609  *      sending the ZYZG_GETRANGE message to the control.
 610  *
 611  *      The position (number of pieces out of the whole have been used) is
 612  *      set with the ZYZG_SETPOSITION message.  It can be any integer from
 613  *      0 to the current range setting of the control--it will be clipped
 614  *      if the position is out of bounds.  The default position is 0.  You
 615  *      can get the current position at any time with the ZYZG_GETPOSITION
 616  *      message.
 617  *
 618  *      You can also set the range using a delta from the current range.
 619  *      This is done by sending the ZYZG_SETDELTAPOS message with wParam
 620  *      set to a _signed_ integer value within the range of the control.
 621  *
 622  *      The font used for the percentage text can be set using the standard
 623  *      WM_SETFONT message.  You can get the current font at any time with
 624  *      the WM_GETFONT message.
 625  *
 626  *      The orientation can be left to right, right to left, bottom to top,
 627  *      or top to bottom.  Whatever suits your needs.  You set this by
 628  *      sending the ZYZG_ORIENTATION message to the control with one of
 629  *      the following values (default is ZYZG_ORIENT_LEFTTORIGHT):
 630  *
 631  *          ZYZG_ORIENT_LEFTTORIGHT (0)
 632  *          ZYZG_ORIENT_RIGHTTOLEFT (1)
 633  *          ZYZG_ORIENT_BOTTOMTOTOP (2)
 634  *          ZYZG_ORIENT_TOPTOBOTTOM (3)
 635  *
 636  *  HISTORY:
 637  *      3/12/91     cjp     put in this comment
 638  *      6/19/92     cjp     touched it a bit
 639  *
 640  ** cjp */
 641 // COPYRIGHT:
 642 //
 643 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 644 //
 645 //   You have a royalty-free right to use, modify, reproduce and
 646 //   distribute the Sample Files (and/or any modified version) in
 647 //   any way you find useful, provided that you agree that
 648 //   Microsoft has no warranty obligations or liability for any
 649 //   Sample Application Files which are modified.
 650 //
 651
 652
 653 /* get the includes we need */
 654 #ifndef __GNUWIN32__
 655 #include <malloc.h>
 656 #endif
 657 #include <stdio.h>
 658 #include <string.h>
 659 #include <stdlib.h>
 660 // #include "zyz3d.h"
 661 // #include "zyzgauge.h"
 662
 663
 664 /* static global variables */
 665 static char gszzYzGaugeClass[] = "zYzGauge";
 666
 667
 668 /* window word position definitions */
 669 #define ZYZG_WW_PZYZGAUGE   0
 670 /* #define ZYZG_WW_EXTRABYTES  2 */
 671 #define ZYZG_WW_EXTRABYTES  4
 672
 673
 674 /* control block structure typedef */
 675 typedef struct tZYZGAUGE
 676 {
 677     WORD    wRange;
 678     WORD    wPosition;
 679     WORD    wOrientation;
 680     WORD    wWidth3D;
 681     WORD    wWidthBezelFace;
 682     HFONT   hFont;
 683     DWORD   rgbTextColor;
 684     DWORD   rgbBkColor;
 685
 686 } ZYZGAUGE, *PZYZGAUGE, FAR *LPZYZGAUGE;
 687
 688
 689 /* some default values for the control */
 690 #define ZYZG_DEF_RANGE          100
 691 #define ZYZG_DEF_POSITION       0
 692 #define ZYZG_DEF_ORIENTATION    ZYZG_ORIENT_LEFTTORIGHT
 693 #define ZYZG_DEF_WIDTH3D        2
 694 #define ZYZG_DEF_BEZELFACE      2
 695
 696
 697
 698 /* the default settings for drawing colors--display dependent */
 699 static DWORD    rgbDefTextColor;
 700 static DWORD    rgbDefBkColor;
 701 static BOOL     fSupport3D;
 702
 703 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
 704 #define APIENTRY FAR PASCAL
 705 #endif
 706
 707 #ifdef __WIN32__
 708 #define _EXPORT /**/
 709 #else
 710 #define _EXPORT _export
 711 typedef signed short int SHORT ;
 712 #endif
 713
 714 /* internal function prototypes */
 715 static void PASCAL gaugePaint(HWND, HDC);
 716 /* LRESULT FAR PASCAL */
 717 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND, UINT, WPARAM, LPARAM);
 718
 719
 720
 721 /** BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 722  *
 723  *  DESCRIPTION:
 724  *      Registers the window class for the zYzGauge control.  Performs
 725  *      other initialization for the zYzGauge text control.  This must
 726  *      be done before the zYzGauge control is used--or it will fail
 727  *      and your dialog box will not open!
 728  *
 729  *  ARGUMENTS:
 730  *      HINSTANCE hInstance :   Instance handle to register class with.
 731  *
 732  *  RETURN (BOOL FAR):
 733  *      The return value is TRUE if the zYzGauge class was successfully
 734  *      registered.  It is FALSE if the initialization fails.
 735  *
 736  *  NOTES:
 737  *
 738  ** cjp */
 739
 740 //#pragma alloc_text(init, gaugeInit)
 741
 742 BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 743 {
 744     static BOOL fRegistered = FALSE;
 745     WNDCLASS    wc;
 746     HDC         hdc;
 747
 748     /* assume already registered if not first instance */
 749     if (fRegistered)
 750         return (TRUE);
 751
 752     /* fill in the class structure for the zyzgauge control */
 753     wc.hCursor          = LoadCursor(NULL, IDC_ARROW);
 754     wc.hIcon            = NULL;
 755     wc.lpszMenuName     = NULL;
 756     wc.lpszClassName    = gszzYzGaugeClass;
 757     wc.hbrBackground    = (HBRUSH)(COLOR_WINDOW + 1);
 758     wc.hInstance        = hInstance;
 759
 760 #ifdef ZYZGAUGE_DLL
 761     wc.style            = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
 762 #else
 763     wc.style            = CS_HREDRAW | CS_VREDRAW;
 764 #endif
 765
 766     wc.lpfnWndProc      = gaugeWndProc;
 767     wc.cbClsExtra       = 0;
 768     wc.cbWndExtra       = ZYZG_WW_EXTRABYTES;
 769
 770     /* attempt to register it--return FALSE if fail */
 771     if (!RegisterClass(&wc))
 772         return (FALSE);
 773
 774     /*  Get a DC to determine whether device is mono or not, and set
 775      *  default foreground/background colors as appropriate.
 776      */
 777     if ((hdc = CreateIC("DISPLAY", NULL, NULL, 0L)))
 778     {
 779         /* check for mono-display */
 780         if ((GetDeviceCaps(hdc, BITSPIXEL) == 1) &&
 781              (GetDeviceCaps(hdc, PLANES) == 1))
 782         {
 783             /* using a mono DC--white foreground, black background */
 784             rgbDefTextColor = RGB(255, 255, 255);
 785             rgbDefBkColor = RGB(0, 0, 0);
 786         }
 787
 788         /* good! we have color: blue foreground, white background */
 789         else
 790         {
 791             rgbDefTextColor = RGB(0, 0, 255);
 792             rgbDefBkColor = RGB(255, 255, 255);
 793         }
 794
 795         /* need at _least_ 8 for two shades of gray (>=VGA) */
 796         fSupport3D = (GetDeviceCaps(hdc, NUMCOLORS) >= 8) ? TRUE : FALSE;
 797
 798         /* get rid of the DC (IC) */
 799         DeleteDC(hdc);
 800     }
 801
 802     /* uh-oh... can't get DC (IC)... fail */
 803     else
 804     {
 805         /* unregister the class */
 806         UnregisterClass(gszzYzGaugeClass, hInstance);
 807         return (FALSE);
 808     }
 809
 810     /* return success */
 811     return (fRegistered = TRUE);
 812 } /* gaugeInit() */
 813
 814
 815 /** static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 816  *
 817  *  DESCRIPTION:
 818  *      This function is responsible for painting the zYzGauge control.
 819  *
 820  *  ARGUMENTS:
 821  *      HWND hwnd   :   The window handle for the gauge.
 822  *
 823  *      HDC hdc     :   The DC for the gauge's window.
 824  *
 825  *  RETURN (void):
 826  *      The control will have been painted.
 827  *
 828  *  NOTES:
 829  *
 830  ** cjp */
 831
 832 static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 833 {
 834     PZYZGAUGE   pgauge;
 835     WORD        iRange, iPos;
 836     WORD        Offset = 1;
 837     DWORD       dwExtent;
 838     RECT        rc1, rc2;
 839     HFONT       hFont;
 840     char        ach[ 6 ];
 841     WORD        dx, dy, wGomerX, wGomerY;
 842 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead,
 843  * which needs a SIZE* parameter */
 844 #if defined(__WIN32__)
 845     SIZE size;
 846 #endif
 847
 848     /* get pointer to the control's control block */
 849 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
 850     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
 851
 852     /* set the colors into for the gauge into the control */
 853     SetTextColor(hdc, pgauge->rgbTextColor);
 854     SetBkColor(hdc, pgauge->rgbBkColor);
 855
 856     /* draw black rectangle for gauge */
 857     GetClientRect(hwnd, &rc1);
 858
 859     /* draw a black border on the _outside_ */
 860     FrameRect(hdc, &rc1, GetStockObject(BLACK_BRUSH));
 861
 862     /* we want to draw _just inside_ the black border */
 863     InflateRect(&rc1, -1, -1);
 864
 865     /* one line thick so far... */
 866 //    Offset = (WORD) 1;
 867
 868     /* for 3D stuff, we need to have at least two shades of gray */
 869     if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
 870     {
 871         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_OUT);
 872         InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 873
 874         Draw3DFaceFrame(hdc, &rc1, pgauge->wWidthBezelFace);
 875         InflateRect(&rc1, ~(pgauge->wWidthBezelFace), ~(pgauge->wWidthBezelFace));
 876
 877         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_IN);
 878         InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 879
 880         /* draw a black border on the _inside_ */
 881         FrameRect(hdc, &rc1, GetStockObject(BLACK_BRUSH));
 882
 883         /* we want to draw _just inside_ the black border */
 884         InflateRect(&rc1, -1, -1);
 885
 886         /* add all the other pixels into the border width */
 887         Offset += (2 * pgauge->wWidth3D) + pgauge->wWidthBezelFace + 1;
 888     }
 889
 890     /* dup--one rc for 'how much filled', one rc for 'how much empty' */
 891     rc2 = rc1;
 892
 893     /* get the range--make sure it's a valid range */
 894     if ((iRange = pgauge->wRange) <= 0)
 895         iRange = 1;
 896
 897     /* get the position--greater than 100% would be bad */
 898     if ((iPos = pgauge->wPosition) > iRange)
 899         iPos = iRange;
 900
 901     /* compute the actual size of the gauge */
 902     dx = rc1.right - rc1.left;
 903     dy = rc1.bottom - rc1.top;
 904     wGomerX = (WORD)((DWORD)iPos * dx / iRange);
 905     wGomerY = (WORD)((DWORD)iPos * dy / iRange);
 906
 907     /* get the orientation and munge rects accordingly */
 908     switch (pgauge->wOrientation)
 909     {
 910         case ZYZG_ORIENT_RIGHTTOLEFT:
 911             rc1.left = rc2.right = rc1.right - wGomerX;
 912             break;
 913
 914         case ZYZG_ORIENT_BOTTOMTOTOP:
 915             rc1.top = rc2.bottom = rc1.bottom - wGomerY;
 916             break;
 917
 918         case ZYZG_ORIENT_TOPTOBOTTOM:
 919             rc1.bottom = rc2.top += wGomerY;
 920             break;
 921
 922         default:
 923             rc1.right = rc2.left += wGomerX;
 924             break;
 925     } /* switch () */
 926
 927     /* select the correct font */
 928     hFont = SelectObject(hdc, pgauge->hFont);
 929
 930     /* build up a string to blit out--ie the meaning of life: "42%" */
 931     wsprintf(ach, "%3d%%", (WORD)((DWORD)iPos * 100 / iRange));
 932 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead */
 933 #if defined(__WIN32__)
 934     GetTextExtentPoint(hdc, ach, wGomerX = lstrlen(ach), &size);
 935     dwExtent = size.cx;
 936 #else
 937     dwExtent = GetTextExtent(hdc, ach, wGomerX = lstrlen(ach));
 938 #endif
 939
 940
 941     /*  Draw the finished (ie the percent done) side of box.  If
 942      *  ZYZG_WW_POSITION is 42, (in range of 0 to 100) this ExtTextOut
 943      *  draws the meaning of life (42%) bar.
 944      */
 945     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 946                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 947                     ETO_OPAQUE | ETO_CLIPPED, &rc2, ach, wGomerX, NULL);
 948
 949     /*  Reverse fore and back colors for drawing the undone (ie the non-
 950      *  finished) side of the box.
 951      */
 952     SetBkColor(hdc, pgauge->rgbTextColor);
 953     SetTextColor(hdc, pgauge->rgbBkColor);
 954
 955     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 956                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 957                     ETO_OPAQUE | ETO_CLIPPED, &rc1, ach, wGomerX, NULL);
 958
 959     /* unselect the font */
 960     SelectObject(hdc, hFont);
 961 } /* gaugePaint() */
 962
 963
 964 /** LRESULT FAR PASCAL gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 965  *
 966  *  DESCRIPTION:
 967  *      This is the control's window procedure.  Its purpose is to handle
 968  *      special messages for this custom control.
 969  *
 970  *      The special control messages for the gauge control are:
 971  *
 972  *          ZYZG_SETRANGE       :   Sets the range of the gauge.  In other
 973  *                                  words, the number of parts that make a
 974  *                                  whole.
 975  *
 976  *          ZYZG_GETRANGE       :   Returns the current range of the gauge.
 977  *
 978  *          ZYZG_SETORIENTATION :   Sets the orientation of the gauge.  This
 979  *                                  can be one of the ZYZG_ORIENT_?? msgs.
 980  *
 981  *          ZYZG_GETORIENTATION :   Gets the current orientation of the
 982  *                                  gauge.
 983  *
 984  *          ZYZG_SETPOSITION    :   Sets the current position of the gauge.
 985  *                                  In other words, how many pieces of the
 986  *                                  whole have been used.
 987  *
 988  *          ZYZG_GETPOSITION    :   Gets the current position of the gauge.
 989  *
 990  *          ZYZG_SETDELTAPOS    :   Sets the position of the gauge +/- the
 991  *                                  specified amount.
 992  *
 993  *          ZYZG_SETFGCOLOR     :   Sets the foreground (percent done) color.
 994  *
 995  *          ZYZG_GETFGCOLOR     :   Gets the foreground (percent done) color.
 996  *
 997  *          ZYZG_SETBKCOLOR     :   Sets the background (percent not done)
 998  *                                  color.
 999  *
1000  *          ZYZG_GETBKCOLOR     :   Gets the background (percent not done)
1001  *                                  color.
1002  *
1003  *          WM_SETFONT          :   Sets the font to use for the percentage
1004  *                                  text of the gauge.
1005  *
1006  *          WM_GETFONT          :   Gets the current font in use by the
1007  *                                  gauge.
1008  *
1009  *  NOTES:
1010  *
1011  ** cjp */
1012
1013 /* LRESULT FAR PASCAL */
1014
1015 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1016 {
1017     HFONT       hFont;
1018     PAINTSTRUCT ps;
1019     PZYZGAUGE   pgauge;
1020     RECT        rc;
1021
1022 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
1023     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
1024
1025     /* break to get DefWindowProc() */
1026     switch (uMsg)
1027     {
1028         case WM_CREATE:
1029             /* need to allocate a control block */
1030 //            pgauge = (PZYZGAUGE)LocalAlloc(LPTR, sizeof(ZYZGAUGE));
1031             pgauge = (PZYZGAUGE)malloc(sizeof(ZYZGAUGE));
1032             if (!pgauge)
1033                 return (0L);
1034
1035             /* hang on to this control block */
1036 //            SetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE, (WORD)pgauge);
1037             SetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE, (LONG)pgauge);
1038
1039             /* fill control block with defaults */
1040             pgauge->wRange           = ZYZG_DEF_RANGE;
1041             pgauge->wPosition        = ZYZG_DEF_POSITION;
1042             pgauge->wOrientation     = ZYZG_DEF_ORIENTATION;
1043             pgauge->wWidth3D         = ZYZG_DEF_WIDTH3D;
1044             pgauge->wWidthBezelFace  = ZYZG_DEF_BEZELFACE;
1045             pgauge->rgbTextColor     = rgbDefTextColor;
1046             pgauge->rgbBkColor       = rgbDefBkColor;
1047
1048             /* use system font */
1049             SendMessage(hwnd, WM_SETFONT, (WPARAM)NULL, 0L);
1050
1051             /* go to DefWindowProc() to finish the job */
1052             break;
1053
1054         case WM_DESTROY:
1055             /* get rid of the control's memory */
1056             if (pgauge)
1057 //                LocalFree((HANDLE)pgauge);
1058                 free(pgauge);
1059             break;
1060
1061         case ZYZG_GETPOSITION:
1062             return (pgauge->wPosition);
1063
1064         case ZYZG_GETRANGE:
1065             return (pgauge->wRange);
1066
1067         case ZYZG_GETORIENTATION:
1068             return (pgauge->wOrientation);
1069
1070         case ZYZG_GETWIDTH3D:
1071             return (pgauge->wWidth3D);
1072
1073         case ZYZG_GETBEZELFACE:
1074             return (pgauge->wWidthBezelFace);
1075
1076         case ZYZG_GETBKCOLOR:
1077             return (pgauge->rgbTextColor);
1078
1079         case ZYZG_GETFGCOLOR:
1080             return (pgauge->rgbBkColor);
1081
1082         case ZYZG_SETBKCOLOR:
1083             pgauge->rgbBkColor = lParam;
1084             return (0L);
1085
1086         case ZYZG_SETFGCOLOR:
1087             pgauge->rgbTextColor = lParam;
1088             return (0L);
1089
1090
1091         case ZYZG_SETPOSITION:
1092             pgauge->wPosition = wParam;
1093
1094 zyzgForceRepaint:
1095             GetClientRect(hwnd, &rc);
1096             if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
1097             {
1098                 wParam = (2 * pgauge->wWidth3D) +
1099                             pgauge->wWidthBezelFace + 2;
1100             }
1101
1102             else
1103                 wParam = 1;
1104
1105             InflateRect(&rc, ~(wParam), ~(wParam));
1106             InvalidateRect(hwnd, &rc, FALSE);
1107             UpdateWindow(hwnd);
1108             return (0L);
1109
1110         case ZYZG_SETRANGE:
1111             pgauge->wRange = wParam;
1112             goto zyzgForceRepaint;
1113
1114         case ZYZG_SETORIENTATION:
1115             pgauge->wOrientation = wParam;
1116             goto zyzgForceRepaint;
1117
1118         case ZYZG_SETWIDTH3D:
1119             pgauge->wWidth3D = wParam;
1120
1121 zyzgForceRepaint3D:
1122             InvalidateRect(hwnd, NULL, FALSE);
1123             UpdateWindow(hwnd);
1124             return (0L);
1125
1126         case ZYZG_SETBEZELFACE:
1127             pgauge->wWidthBezelFace = wParam;
1128             goto zyzgForceRepaint3D;
1129
1130         case ZYZG_SETDELTAPOS:
1131 /* Watcom doesn't like the following line so removing typecasts */
1132 /*            (int)pgauge->wPosition += (int)wParam; */
1133             pgauge->wPosition += wParam;
1134             goto zyzgForceRepaint;
1135
1136         case WM_PAINT:
1137             BeginPaint(hwnd, &ps);
1138             gaugePaint(hwnd, ps.hdc);
1139             EndPaint(hwnd, &ps);
1140             return (0L);
1141
1142         case WM_GETFONT:
1143             hFont = pgauge->hFont;
1144
1145             /* if system font, then return NULL handle */
1146             return (long)((hFont == GetStockObject(SYSTEM_FONT)) ? NULL : hFont);
1147
1148         case WM_SETFONT:
1149             /* if NULL hFont, use system font */
1150             if (!(hFont = (HFONT)wParam))
1151                 hFont = GetStockObject(SYSTEM_FONT);
1152
1153             pgauge->hFont = hFont;
1154
1155             /* redraw if indicated in message */
1156             if ((BOOL)lParam)
1157             {
1158                 InvalidateRect(hwnd, NULL, TRUE);
1159                 UpdateWindow(hwnd);
1160             }
1161             return (0L);
1162     } /* switch () */
1163
1164     /* let the dialog mangler take care of this message */
1165     return (DefWindowProc(hwnd, uMsg, wParam, lParam));
1166 } /* gaugeWndProc() */
1167
1168
1169 /** EOF: zyzgauge.c **/
1170
1171 #endif // USE_GAUGE