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 #include "wx/utils.h"
  26 #endif
  27
  28 #if wxUSE_GAUGE
  29
  30 #include "wx/msw/gaugemsw.h"
  31 #include "wx/msw/private.h"
  32
  33 /* gas gauge graph control messages--class "zYzGauge" */
  34 #define ZYZG_SETRANGE       (WM_USER + 0)
  35 #define ZYZG_GETRANGE       (WM_USER + 1)
  36 #define ZYZG_SETPOSITION    (WM_USER + 2)
  37 #define ZYZG_GETPOSITION    (WM_USER + 3)
  38 #define ZYZG_SETORIENTATION (WM_USER + 4)
  39 #define ZYZG_GETORIENTATION (WM_USER + 5)
  40 #define ZYZG_SETFGCOLOR     (WM_USER + 6)
  41 #define ZYZG_GETFGCOLOR     (WM_USER + 7)
  42 #define ZYZG_SETBKCOLOR     (WM_USER + 8)
  43 #define ZYZG_GETBKCOLOR     (WM_USER + 9)
  44 #define ZYZG_SETWIDTH3D     (WM_USER + 10)
  45 #define ZYZG_GETWIDTH3D     (WM_USER + 11)
  46 #define ZYZG_SETBEZELFACE   (WM_USER + 12)
  47 #define ZYZG_GETBEZELFACE   (WM_USER + 13)
  48 #define ZYZG_SETDELTAPOS    (WM_USER + 14)
  49
  50
  51 /* orientations for ZYZG_WW_ORIENTATION */
  52 #define ZYZG_ORIENT_LEFTTORIGHT     0
  53 #define ZYZG_ORIENT_RIGHTTOLEFT     1
  54 #define ZYZG_ORIENT_BOTTOMTOTOP     2
  55 #define ZYZG_ORIENT_TOPTOBOTTOM     3
  56
  57 /* gauge styles */
  58 #define ZYZGS_3D        0x8000L     /* control will be 3D       */
  59
  60 /* public function prototypes */
  61 BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance);
  62
  63 IMPLEMENT_DYNAMIC_CLASS(wxGaugeMSW, wxControl)
  64
  65 bool wxGaugeMSW::Create(wxWindow *parent, wxWindowID id,
  66            int range,
  67            const wxPoint& pos,
  68            const wxSize& size,
  69            long style,
  70            const wxValidator& validator,
  71            const wxString& name)
  72 {
  73   static bool wxGaugeMSWInitialised = FALSE;
  74
  75   if ( !wxGaugeMSWInitialised )
  76   {
  77     if (!gaugeInit((HINSTANCE) wxGetInstance()))
  78         wxFatalError("Cannot initalize Gauge library");
  79     wxGaugeMSWInitialised = TRUE;
  80   }
  81
  82   SetName(name);
  83 #if wxUSE_VALIDATORS
  84   SetValidator(validator);
  85 #endif // wxUSE_VALIDATORS
  86
  87   if (parent) parent->AddChild(this);
  88   m_rangeMax = range;
  89   m_gaugePos = 0;
  90
  91   SetBackgroundColour(parent->GetBackgroundColour()) ;
  92   SetForegroundColour(parent->GetForegroundColour()) ;
  93
  94   m_windowStyle = style;
  95
  96   if ( id == -1 )
  97       m_windowId = (int)NewControlId();
  98   else
  99     m_windowId = id;
 100
 101   int x = pos.x;
 102   int y = pos.y;
 103   int width = size.x;
 104   int height = size.y;
 105
 106   long msFlags = WS_CHILD | WS_VISIBLE | WS_TABSTOP;
 107   bool want3D;
 108   WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 109   if (want3D)
 110     msFlags |= ZYZGS_3D;
 111
 112   HWND wx_button =
 113       CreateWindowEx(MakeExtendedStyle(m_windowStyle), wxT("zYzGauge"), NULL, msFlags,
 114                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
 115                     wxGetInstance(), NULL);
 116
 117   m_hWnd = (WXHWND)wx_button;
 118
 119   // Subclass again for purposes of dialog editing mode
 120   SubclassWin((WXHWND)wx_button);
 121
 122   int wOrient = 0;
 123
 124   if (m_windowStyle & wxGA_HORIZONTAL)
 125     wOrient = ZYZG_ORIENT_LEFTTORIGHT;
 126   else
 127     wOrient = ZYZG_ORIENT_BOTTOMTOTOP;
 128
 129   SendMessage(wx_button, ZYZG_SETORIENTATION, wOrient, 0);
 130   SendMessage(wx_button, ZYZG_SETRANGE, range, 0);
 131
 132   SendMessage(GetHwnd(), ZYZG_SETFGCOLOR, 0, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 133   SendMessage(GetHwnd(), ZYZG_SETBKCOLOR, 0, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 134
 135   //SetBezelFace(1);
 136   //SetShadowWidth(1);
 137
 138   SetFont(parent->GetFont());
 139
 140   if (width == -1)
 141     width = 50;
 142   if (height == -1)
 143     height = 50;
 144   SetSize(x, y, width, height);
 145
 146   ShowWindow(GetHwnd(), SW_SHOW);
 147
 148   return TRUE;
 149 }
 150
 151 void wxGaugeMSW::SetShadowWidth(int w)
 152 {
 153   SendMessage(GetHwnd(), ZYZG_SETWIDTH3D, w, 0);
 154 }
 155
 156 void wxGaugeMSW::SetBezelFace(int w)
 157 {
 158   SendMessage(GetHwnd(), ZYZG_SETBEZELFACE, w, 0);
 159 }
 160
 161 void wxGaugeMSW::SetRange(int r)
 162 {
 163   m_rangeMax = r;
 164
 165   SendMessage(GetHwnd(), ZYZG_SETRANGE, r, 0);
 166 }
 167
 168 void wxGaugeMSW::SetValue(int pos)
 169 {
 170   m_gaugePos = pos;
 171
 172   SendMessage(GetHwnd(), ZYZG_SETPOSITION, pos, 0);
 173 }
 174
 175 int wxGaugeMSW::GetShadowWidth(void) const
 176 {
 177   return (int) SendMessage(GetHwnd(), ZYZG_GETWIDTH3D, 0, 0);
 178 }
 179
 180 int wxGaugeMSW::GetBezelFace(void) const
 181 {
 182   return (int) SendMessage(GetHwnd(), ZYZG_GETBEZELFACE, 0, 0);
 183 }
 184
 185 int wxGaugeMSW::GetRange(void) const
 186 {
 187   return (int) SendMessage(GetHwnd(), ZYZG_GETRANGE, 0, 0);
 188 }
 189
 190 int wxGaugeMSW::GetValue(void) const
 191 {
 192   return (int) SendMessage(GetHwnd(), ZYZG_GETPOSITION, 0, 0);
 193 }
 194
 195 bool wxGaugeMSW::SetForegroundColour(const wxColour& col)
 196 {
 197     if ( !wxControl::SetForegroundColour(col) )
 198         return FALSE;
 199
 200     SendMessage(GetHwnd(), ZYZG_SETFGCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 201
 202     return TRUE;
 203 }
 204
 205 bool wxGaugeMSW::SetBackgroundColour(const wxColour& col)
 206 {
 207     if ( !wxControl::SetBackgroundColour(col) )
 208         return FALSE;
 209
 210     SendMessage(GetHwnd(), ZYZG_SETBKCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 211
 212     return TRUE;
 213 }
 214
 215
 216 /** zyz3d.c
 217  *
 218  *  DESCRIPTION:
 219  *      This module contains functions for creating nifty 3D borders
 220  *      around controls like zYzGauge.
 221  *
 222  *  HISTORY:
 223  *      3/14/91     cjp     put in this comment
 224  *      6/19/92     cjp     touched it a bit
 225  *
 226  ** cjp */
 227 // COPYRIGHT:
 228 //
 229 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 230 //
 231 //   You have a royalty-free right to use, modify, reproduce and
 232 //   distribute the Sample Files (and/or any modified version) in
 233 //   any way you find useful, provided that you agree that
 234 //   Microsoft has no warranty obligations or liability for any
 235 //   Sample Application Files which are modified.
 236 //
 237
 238
 239 /* get the includes we need */
 240 #include <windows.h>
 241
 242 /* misc. control flag defines */
 243 #define DRAW3D_IN           0x0001
 244 #define DRAW3D_OUT          0x0002
 245
 246 #define DRAW3D_TOPLINE      0x0004
 247 #define DRAW3D_BOTTOMLINE   0x0008
 248 #define DRAW3D_LEFTLINE     0x0010
 249 #define DRAW3D_RIGHTLINE    0x0020
 250
 251
 252 /* public function prototypes */
 253 void FAR PASCAL Draw3DFaceFrame(HDC, LPRECT, WORD);
 254 void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD);
 255 void FAR PASCAL Draw3DLine(HDC, WORD, WORD, WORD, WORD, WORD);
 256
 257
 258 /** void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 259  *
 260  *  DESCRIPTION:
 261  *      This function draws a flat frame with the current button-face
 262  *      color.
 263  *
 264  *  ARGUMENTS:
 265  *      HDC hdc     :   The DC to draw into.
 266  *
 267  *      LPRECT rc   :   The containing rect for the new frame.
 268  *
 269  *      WORD wWidth :   The width of the frame to draw.
 270  *
 271  *  RETURN (void FAR PASCAL):
 272  *      The frame will have been drawn into the DC.
 273  *
 274  *  NOTES:
 275  *
 276  ** cjp */
 277
 278 void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 279 {
 280     RECT    rc1;
 281     DWORD   rgbOld;
 282
 283     /* don't go through a bunch of work if we don't have to */
 284     if (!wWidth)
 285         return;
 286
 287     /* set up color to be button-face color--so it may not be gray */
 288     rgbOld = SetBkColor(hdc, GetSysColor(COLOR_BTNFACE));
 289
 290     /* perform CopyRect w/o bloody windows style overhead */
 291     rc1 = *rc;
 292
 293     /* top */
 294     rc1.top = rc->top;
 295     rc1.left = rc->left;
 296     rc1.bottom = rc->top + wWidth;
 297     rc1.right = rc->right;
 298
 299     /* blast it out */
 300     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 301
 302     /* right */
 303     rc1.left = rc->right - wWidth;
 304     rc1.bottom = rc->bottom;
 305
 306     /* blast this part now */
 307     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 308
 309     /* left */
 310     rc1.left = rc->left;
 311     rc1.right = rc->left + wWidth;
 312
 313     /* and another part */
 314     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 315
 316     /* bottom */
 317     rc1.right = rc->right;
 318     rc1.top = rc->bottom - wWidth;
 319
 320     /* finish it off */
 321     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 322
 323     /* restore the old bk color */
 324     SetBkColor(hdc, rgbOld);
 325 } /* Draw3DFaceFrame() */
 326
 327
 328 /** void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD)
 329  *
 330  *  DESCRIPTION:
 331  *      Draws a 3D rectangle that is shaded.  wFlags can be used to
 332  *      control how the rectangle looks.
 333  *
 334  *  ARGUMENTS:
 335  *      HDC hdc             :   Handle to the device context that will be
 336  *                              used to display the rectangle.
 337  *
 338  *      RECT rect           :   A rectangle describing the dimensions of
 339  *                              the rectangle in device coordinates.
 340  *
 341  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 342  *
 343  *      WORD wFlags         :   The following flags may be passed to describe
 344  *                              the style of the rectangle:
 345  *
 346  *                              DRAW3D_IN   :   The shadow is drawn such that
 347  *                              the box appears to be sunk in to the screen.
 348  *                              This is default if 0 is passed.
 349  *
 350  *                              DRAW3D_OUT  :   The shadow is drawn such that
 351  *                              the box appears to be sticking out of the
 352  *                              screen.
 353  *
 354  *  RETURN (void FAR PASCAL):
 355  *      The 3D looking rectangle will have been drawn into the DC.
 356  *
 357  *  NOTES:
 358  *
 359  ** cjp */
 360
 361 void FAR PASCAL Draw3DRect(HDC hdc, LPRECT lpRect,
 362                                WORD wShadowWidth, WORD wFlags)
 363 {
 364     /* sanity check--don't work if you don't have to! */
 365     if (!wShadowWidth || !RectVisible(hdc, lpRect))
 366         return;
 367
 368     /* draw the top line */
 369     Draw3DLine(hdc, lpRect->left, lpRect->top,
 370                     lpRect->right - lpRect->left,
 371                     wShadowWidth, DRAW3D_TOPLINE | wFlags);
 372
 373     /* right line */
 374     Draw3DLine(hdc, lpRect->right, lpRect->top,
 375                     lpRect->bottom - lpRect->top,
 376                     wShadowWidth, DRAW3D_RIGHTLINE | wFlags);
 377
 378     /* bottom line */
 379     Draw3DLine(hdc, lpRect->left, lpRect->bottom,
 380                     lpRect->right - lpRect->left,
 381                     wShadowWidth, DRAW3D_BOTTOMLINE | wFlags);
 382
 383     /* left line */
 384     Draw3DLine(hdc, lpRect->left, lpRect->top,
 385                     lpRect->bottom - lpRect->top,
 386                     wShadowWidth, DRAW3D_LEFTLINE | wFlags);
 387 } /* Draw3DRect() */
 388
 389
 390 /** void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 391  *
 392  *  DESCRIPTION:
 393  *      Draws a 3D line that can be used to make a 3D box.
 394  *
 395  *  ARGUMENTS:
 396  *      HDC hdc             :   Handle to the device context that will be
 397  *                              used to display the 3D line.
 398  *
 399  *      WORD x, y           :   Coordinates of the beginning of the line.
 400  *                              These coordinates are in device units and
 401  *                              represent the _outside_ most point. Horiz-
 402  *                              ontal lines are drawn from left to right and
 403  *                              vertical lines are drawn from top to bottom.
 404  *
 405  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 406  *
 407  *      WORD  wFlags        :   The following flags may be passed to
 408  *                              describe the style of the 3D line:
 409  *
 410  *                              DRAW3D_IN   :   The shadow is drawn such that
 411  *                              the box appears to be sunk in to the screen.
 412  *                              This is default if 0 is passed.
 413  *
 414  *                              DRAW3D_OUT  :   The shadow is drawn such that
 415  *                              the box appears to be sticking out of the
 416  *                              screen.
 417  *
 418  *                              DRAW3D_TOPLINE, _BOTTOMLINE, _LEFTLINE, and
 419  *                              _RIGHTLINE  :   Specifies that a "top",
 420  *                              "Bottom", "Left", or"Right" line is to be
 421  *                              drawn.
 422  *
 423  *  RETURN (void FAR PASCAL):
 424  *      The line will have been drawn into the DC.
 425  *
 426  *  NOTES:
 427  *
 428  ** cjp */
 429
 430 void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 431                                WORD wShadowWidth, WORD wFlags)
 432 {
 433     HBRUSH  hOldBrush;
 434     HPEN    hOldPen;
 435     BOOL    fDark;
 436     POINT   Point[ 4 ];         /* define a polgon with 4 points    */
 437
 438     /* if width is zero, don't do nothin'! */
 439     if (!wShadowWidth)
 440         return;
 441
 442     /* define shape of polygon--origin is always the same */
 443     Point[0].x = x;
 444     Point[0].y = y;
 445
 446     /*  To do this we'll simply draw a polygon with four sides, using
 447      *  the appropriate brush.  I dare you to ask me why this isn't a
 448      *  switch/case!
 449      */
 450     if (wFlags & DRAW3D_TOPLINE)
 451     {
 452         /* across to right */
 453         Point[1].x = x + nLen - (wShadowWidth == 1 ? 1 : 0);
 454         Point[1].y = y;
 455
 456         /* down/left */
 457         Point[2].x = x + nLen - wShadowWidth;
 458         Point[2].y = y + wShadowWidth;
 459
 460         /* accross to left */
 461         Point[3].x = x + wShadowWidth;
 462         Point[3].y = y + wShadowWidth;
 463
 464         /* select 'dark' brush if 'in'--'light' for 'out' */
 465         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 466     }
 467
 468     /* possibly the bottom? */
 469     else if (wFlags & DRAW3D_BOTTOMLINE)
 470     {
 471         /* across to right */
 472         Point[1].x = x + nLen;
 473         Point[1].y = y;
 474
 475         /* up/left */
 476         Point[2].x = x + nLen - wShadowWidth;
 477         Point[2].y = y - wShadowWidth;
 478
 479         /* accross to left */
 480         Point[3].x = x + wShadowWidth;
 481         Point[3].y = y - wShadowWidth;
 482
 483         /* select 'light' brush if 'in' */
 484         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 485     }
 486
 487     /* ok, it's gotta be left? */
 488     else if (wFlags & DRAW3D_LEFTLINE)
 489     {
 490         /* down */
 491         Point[1].x = x;
 492         Point[1].y = y + nLen - (wShadowWidth == 1 ? 1 : 0);
 493
 494         /* up/right */
 495         Point[2].x = x + wShadowWidth;
 496         Point[2].y = y + nLen - wShadowWidth;
 497
 498         /* down */
 499         Point[3].x = x + wShadowWidth;
 500         Point[3].y = y + wShadowWidth;
 501
 502         /* select 'dark' brush if 'in'--'light' for 'out' */
 503         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 504     }
 505
 506     /* well maybe it's for the right side? */
 507     else if (wFlags & DRAW3D_RIGHTLINE)
 508     {
 509         /* down */
 510         Point[1].x = x;
 511         Point[1].y = y + nLen;
 512
 513         /* up/left */
 514         Point[2].x = x - wShadowWidth;
 515         Point[2].y = y + nLen - wShadowWidth;
 516
 517         /* up */
 518         Point[3].x = x - wShadowWidth;
 519         Point[3].y = y + wShadowWidth;
 520
 521         /* select 'light' brush if 'in' */
 522         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 523     }
 524
 525     /* bad drugs? */
 526     else return;
 527
 528     /* select NULL_PEN for no borders */
 529     hOldPen = (HPEN) SelectObject(hdc, GetStockObject(NULL_PEN));
 530
 531     /* select the appropriate color for the fill */
 532     if (fDark)
 533         hOldBrush = (HBRUSH) SelectObject(hdc, GetStockObject(GRAY_BRUSH));
 534     else
 535         hOldBrush = (HBRUSH) SelectObject(hdc, GetStockObject(WHITE_BRUSH));
 536
 537     /* finally, draw the dern thing */
 538     Polygon(hdc, (LPPOINT)&Point, 4);
 539
 540     /* restore what we killed */
 541     SelectObject(hdc, hOldBrush);
 542     SelectObject(hdc, hOldPen);
 543 } /* Draw3DLine() */
 544
 545 /** EOF: zyz3d.c **/
 546
 547 /** zyzgauge.c
 548  *
 549  *  DESCRIPTION:
 550  *      Yet another 'Gas Gauge Custom Control.'  This control gives you
 551  *      a 'progress bar' class (named zYzGauge) for use in your applications.
 552  *      You can set the range, position, font, color, orientation, and 3d
 553  *      effect of the gauge by sending messages to the control.
 554  *
 555  *      Before you can use this control, you MUST first export the window
 556  *      procedure for the control (or define it with the _export keyword):
 557  *
 558  *          EXPORTS     gaugeWndProc
 559  *
 560  *      You then need initialize the class before you use it:
 561  *
 562  *          if (!gaugeInit(hInstance))
 563  *              die a horrible death
 564  *          else
 565  *              you are good to go
 566  *
 567  *      The colors used by the control default to black and white if you
 568  *      are running on a mono-display.  They default to blue and white
 569  *      if you are on a color display.  You enable the 3D effect by setting
 570  *      the ZYZGS_3D style flag in the styles field of the control (like
 571  *      any other control).
 572  *
 573  *      To select your own colors, you can send the ZYZG_SETFGCOLOR and
 574  *      ZYZG_SETBKCOLOR messages to set the foreground (percent done) and
 575  *      background (percent not done) colors.  The lParam is the RGB()
 576  *      value--wParam is ignored.
 577  *
 578  *      In all of the following ZYZG_??? messages, the arguments are
 579  *      WORDS.  If you are setting parameters, the value is sent as
 580  *      the wParam (lParam is ignored).  If you are getting parameters,
 581  *      the value is returned as a LONG and should be cast to a *signed*
 582  *      integer.
 583  *
 584  *      To set the depth of the 3D effect (if enabled), you can send the
 585  *      ZYZG_SETBEZELFACE and ZYZG_SETWIDTH3D messages.  The bezel face
 586  *      is the flat top on the 3D border--its color will be that of the
 587  *      button-face.  The 3D width is the width of the bezel itself; inside
 588  *      and outside.  The light color is white, the dark color is gray.
 589  *      Both widths *can* be zero--both default to 2 which looks to me.
 590  *
 591  *      The range of the control can be set by sending the ZYZG_SETRANGE
 592  *      message to the control.  It can be any integer from 1 to 32767.
 593  *      What this specifies is the number of pieces that create a whole.
 594  *      The default is 100.  You can get the current range setting by
 595  *      sending the ZYZG_GETRANGE message to the control.
 596  *
 597  *      The position (number of pieces out of the whole have been used) is
 598  *      set with the ZYZG_SETPOSITION message.  It can be any integer from
 599  *      0 to the current range setting of the control--it will be clipped
 600  *      if the position is out of bounds.  The default position is 0.  You
 601  *      can get the current position at any time with the ZYZG_GETPOSITION
 602  *      message.
 603  *
 604  *      You can also set the range using a delta from the current range.
 605  *      This is done by sending the ZYZG_SETDELTAPOS message with wParam
 606  *      set to a _signed_ integer value within the range of the control.
 607  *
 608  *      The font used for the percentage text can be set using the standard
 609  *      WM_SETFONT message.  You can get the current font at any time with
 610  *      the WM_GETFONT message.
 611  *
 612  *      The orientation can be left to right, right to left, bottom to top,
 613  *      or top to bottom.  Whatever suits your needs.  You set this by
 614  *      sending the ZYZG_ORIENTATION message to the control with one of
 615  *      the following values (default is ZYZG_ORIENT_LEFTTORIGHT):
 616  *
 617  *          ZYZG_ORIENT_LEFTTORIGHT (0)
 618  *          ZYZG_ORIENT_RIGHTTOLEFT (1)
 619  *          ZYZG_ORIENT_BOTTOMTOTOP (2)
 620  *          ZYZG_ORIENT_TOPTOBOTTOM (3)
 621  *
 622  *  HISTORY:
 623  *      3/12/91     cjp     put in this comment
 624  *      6/19/92     cjp     touched it a bit
 625  *
 626  ** cjp */
 627 // COPYRIGHT:
 628 //
 629 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 630 //
 631 //   You have a royalty-free right to use, modify, reproduce and
 632 //   distribute the Sample Files (and/or any modified version) in
 633 //   any way you find useful, provided that you agree that
 634 //   Microsoft has no warranty obligations or liability for any
 635 //   Sample Application Files which are modified.
 636 //
 637
 638
 639 /* get the includes we need */
 640 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__)
 641 #include <malloc.h>
 642 #endif
 643 #include <stdio.h>
 644 #include <string.h>
 645 #include <stdlib.h>
 646 // #include "zyz3d.h"
 647 // #include "zyzgauge.h"
 648
 649
 650 /* static global variables */
 651 static wxChar gszzYzGaugeClass[] = wxT("zYzGauge");
 652
 653
 654 /* window word position definitions */
 655 #define ZYZG_WW_PZYZGAUGE   0
 656 /* #define ZYZG_WW_EXTRABYTES  2 */
 657 #define ZYZG_WW_EXTRABYTES  4
 658
 659
 660 /* control block structure typedef */
 661 typedef struct tZYZGAUGE
 662 {
 663     WORD    wRange;
 664     WORD    wPosition;
 665     WORD    wOrientation;
 666     WORD    wWidth3D;
 667     WORD    wWidthBezelFace;
 668     HFONT   hFont;
 669     DWORD   rgbTextColor;
 670     DWORD   rgbBkColor;
 671
 672 } ZYZGAUGE, *PZYZGAUGE, FAR *LPZYZGAUGE;
 673
 674
 675 /* some default values for the control */
 676 #define ZYZG_DEF_RANGE          100
 677 #define ZYZG_DEF_POSITION       0
 678 #define ZYZG_DEF_ORIENTATION    ZYZG_ORIENT_LEFTTORIGHT
 679 #define ZYZG_DEF_WIDTH3D        2
 680 #define ZYZG_DEF_BEZELFACE      2
 681
 682
 683
 684 /* the default settings for drawing colors--display dependent */
 685 static DWORD    rgbDefTextColor;
 686 static DWORD    rgbDefBkColor;
 687 static BOOL     fSupport3D;
 688
 689 #if !defined(APIENTRY)    // NT defines APIENTRY, 3.x not
 690 #define APIENTRY FAR PASCAL
 691 #endif
 692
 693 #ifdef __WIN32__
 694 #define _EXPORT /**/
 695 #else
 696 #define _EXPORT _export
 697 typedef signed short int SHORT ;
 698 #endif
 699
 700 /* internal function prototypes */
 701 static void PASCAL gaugePaint(HWND, HDC);
 702 /* LRESULT FAR PASCAL */
 703 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND, UINT, WPARAM, LPARAM);
 704
 705
 706
 707 /** BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 708  *
 709  *  DESCRIPTION:
 710  *      Registers the window class for the zYzGauge control.  Performs
 711  *      other initialization for the zYzGauge text control.  This must
 712  *      be done before the zYzGauge control is used--or it will fail
 713  *      and your dialog box will not open!
 714  *
 715  *  ARGUMENTS:
 716  *      HINSTANCE hInstance :   Instance handle to register class with.
 717  *
 718  *  RETURN (BOOL FAR):
 719  *      The return value is TRUE if the zYzGauge class was successfully
 720  *      registered.  It is FALSE if the initialization fails.
 721  *
 722  *  NOTES:
 723  *
 724  ** cjp */
 725
 726 //#pragma alloc_text(init, gaugeInit)
 727
 728 BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 729 {
 730     static BOOL fRegistered = FALSE;
 731     WNDCLASS    wc;
 732     HDC         hdc;
 733
 734     /* assume already registered if not first instance */
 735     if (fRegistered)
 736         return (TRUE);
 737
 738     /* fill in the class structure for the zyzgauge control */
 739     wc.hCursor          = LoadCursor(NULL, IDC_ARROW);
 740     wc.hIcon            = NULL;
 741     wc.lpszMenuName     = NULL;
 742     wc.lpszClassName    = gszzYzGaugeClass;
 743     wc.hbrBackground    = (HBRUSH)(COLOR_WINDOW + 1);
 744     wc.hInstance        = hInstance;
 745
 746 #ifdef ZYZGAUGE_DLL
 747     wc.style            = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
 748 #else
 749     wc.style            = CS_HREDRAW | CS_VREDRAW;
 750 #endif
 751
 752     wc.lpfnWndProc      = gaugeWndProc;
 753     wc.cbClsExtra       = 0;
 754     wc.cbWndExtra       = ZYZG_WW_EXTRABYTES;
 755
 756     /* attempt to register it--return FALSE if fail */
 757     if (!RegisterClass(&wc))
 758         return (FALSE);
 759
 760     /*  Get a DC to determine whether device is mono or not, and set
 761      *  default foreground/background colors as appropriate.
 762      */
 763     hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0L) ;
 764     if (hdc)
 765     {
 766         /* check for mono-display */
 767         if ((GetDeviceCaps(hdc, BITSPIXEL) == 1) &&
 768              (GetDeviceCaps(hdc, PLANES) == 1))
 769         {
 770             /* using a mono DC--white foreground, black background */
 771             rgbDefTextColor = RGB(255, 255, 255);
 772             rgbDefBkColor = RGB(0, 0, 0);
 773         }
 774
 775         /* good! we have color: blue foreground, white background */
 776         else
 777         {
 778             rgbDefTextColor = RGB(0, 0, 255);
 779             rgbDefBkColor = RGB(255, 255, 255);
 780         }
 781
 782         /* need at _least_ 8 for two shades of gray (>=VGA) */
 783         fSupport3D = (GetDeviceCaps(hdc, NUMCOLORS) >= 8) ? TRUE : FALSE;
 784
 785         /* get rid of the DC (IC) */
 786         DeleteDC(hdc);
 787     }
 788
 789     /* uh-oh... can't get DC (IC)... fail */
 790     else
 791     {
 792         /* unregister the class */
 793         UnregisterClass(gszzYzGaugeClass, hInstance);
 794         return (FALSE);
 795     }
 796
 797     /* return success */
 798     return (fRegistered = TRUE);
 799 } /* gaugeInit() */
 800
 801
 802 /** static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 803  *
 804  *  DESCRIPTION:
 805  *      This function is responsible for painting the zYzGauge control.
 806  *
 807  *  ARGUMENTS:
 808  *      HWND hwnd   :   The window handle for the gauge.
 809  *
 810  *      HDC hdc     :   The DC for the gauge's window.
 811  *
 812  *  RETURN (void):
 813  *      The control will have been painted.
 814  *
 815  *  NOTES:
 816  *
 817  ** cjp */
 818
 819 static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 820 {
 821     PZYZGAUGE   pgauge;
 822     WORD        iRange, iPos;
 823     WORD        Offset = 1;
 824     DWORD       dwExtent;
 825     RECT        rc1, rc2;
 826     HFONT       hFont;
 827     wxChar      ach[ 6 ];
 828     WORD        dx, dy, wGomerX, wGomerY;
 829 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead,
 830  * which needs a SIZE* parameter */
 831 #if defined(__WIN32__)
 832     SIZE size;
 833 #endif
 834
 835     /* get pointer to the control's control block */
 836 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
 837     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
 838
 839     /* set the colors into for the gauge into the control */
 840     SetTextColor(hdc, pgauge->rgbTextColor);
 841     SetBkColor(hdc, pgauge->rgbBkColor);
 842
 843     /* draw black rectangle for gauge */
 844     GetClientRect(hwnd, &rc1);
 845
 846     /* draw a black border on the _outside_ */
 847     FrameRect(hdc, &rc1, (HBRUSH) GetStockObject(BLACK_BRUSH));
 848
 849     /* we want to draw _just inside_ the black border */
 850     InflateRect(&rc1, -1, -1);
 851
 852     /* one line thick so far... */
 853 //    Offset = (WORD) 1;
 854
 855     /* for 3D stuff, we need to have at least two shades of gray */
 856     if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
 857     {
 858         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_OUT);
 859     InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 860
 861         Draw3DFaceFrame(hdc, &rc1, pgauge->wWidthBezelFace);
 862     InflateRect(&rc1, ~(pgauge->wWidthBezelFace), ~(pgauge->wWidthBezelFace));
 863
 864         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_IN);
 865     InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 866
 867         /* draw a black border on the _inside_ */
 868         FrameRect(hdc, &rc1, (HBRUSH) GetStockObject(BLACK_BRUSH));
 869
 870         /* we want to draw _just inside_ the black border */
 871         InflateRect(&rc1, -1, -1);
 872
 873         /* add all the other pixels into the border width */
 874         Offset += (2 * pgauge->wWidth3D) + pgauge->wWidthBezelFace + 1;
 875     }
 876
 877     /* dup--one rc for 'how much filled', one rc for 'how much empty' */
 878     rc2 = rc1;
 879
 880     /* get the range--make sure it's a valid range */
 881     if ((iRange = pgauge->wRange) <= 0)
 882         iRange = 1;
 883
 884     /* get the position--greater than 100% would be bad */
 885     if ((iPos = pgauge->wPosition) > iRange)
 886         iPos = iRange;
 887
 888     /* compute the actual size of the gauge */
 889     dx = rc1.right - rc1.left;
 890     dy = rc1.bottom - rc1.top;
 891     wGomerX = (WORD)((DWORD)iPos * dx / iRange);
 892     wGomerY = (WORD)((DWORD)iPos * dy / iRange);
 893
 894     /* get the orientation and munge rects accordingly */
 895     switch (pgauge->wOrientation)
 896     {
 897         case ZYZG_ORIENT_RIGHTTOLEFT:
 898             rc1.left = rc2.right = rc1.right - wGomerX;
 899             break;
 900
 901         case ZYZG_ORIENT_BOTTOMTOTOP:
 902             rc1.top = rc2.bottom = rc1.bottom - wGomerY;
 903             break;
 904
 905         case ZYZG_ORIENT_TOPTOBOTTOM:
 906             rc1.bottom = rc2.top += wGomerY;
 907             break;
 908
 909         default:
 910             rc1.right = rc2.left += wGomerX;
 911             break;
 912     } /* switch () */
 913
 914     /* select the correct font */
 915     hFont = (HFONT) SelectObject(hdc, pgauge->hFont);
 916
 917     /* build up a string to blit out--ie the meaning of life: "42%" */
 918     wsprintf(ach, wxT("%3d%%"), (WORD)((DWORD)iPos * 100 / iRange));
 919 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead */
 920 #if defined(__WIN32__)
 921     GetTextExtentPoint(hdc, ach, wGomerX = lstrlen(ach), &size);
 922     dwExtent = size.cx;
 923 #else
 924     dwExtent = GetTextExtent(hdc, ach, wGomerX = lstrlen(ach));
 925 #endif
 926
 927
 928     /*  Draw the finished (ie the percent done) side of box.  If
 929      *  ZYZG_WW_POSITION is 42, (in range of 0 to 100) this ExtTextOut
 930      *  draws the meaning of life (42%) bar.
 931      */
 932     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 933                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 934                     ETO_OPAQUE | ETO_CLIPPED, &rc2, ach, wGomerX, NULL);
 935
 936     /*  Reverse fore and back colors for drawing the undone (ie the non-
 937      *  finished) side of the box.
 938      */
 939     SetBkColor(hdc, pgauge->rgbTextColor);
 940     SetTextColor(hdc, pgauge->rgbBkColor);
 941
 942     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 943                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 944                     ETO_OPAQUE | ETO_CLIPPED, &rc1, ach, wGomerX, NULL);
 945
 946     /* unselect the font */
 947     SelectObject(hdc, hFont);
 948 } /* gaugePaint() */
 949
 950
 951 /** LRESULT FAR PASCAL gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 952  *
 953  *  DESCRIPTION:
 954  *      This is the control's window procedure.  Its purpose is to handle
 955  *      special messages for this custom control.
 956  *
 957  *      The special control messages for the gauge control are:
 958  *
 959  *          ZYZG_SETRANGE       :   Sets the range of the gauge.  In other
 960  *                                  words, the number of parts that make a
 961  *                                  whole.
 962  *
 963  *          ZYZG_GETRANGE       :   Returns the current range of the gauge.
 964  *
 965  *          ZYZG_SETORIENTATION :   Sets the orientation of the gauge.  This
 966  *                                  can be one of the ZYZG_ORIENT_?? msgs.
 967  *
 968  *          ZYZG_GETORIENTATION :   Gets the current orientation of the
 969  *                                  gauge.
 970  *
 971  *          ZYZG_SETPOSITION    :   Sets the current position of the gauge.
 972  *                                  In other words, how many pieces of the
 973  *                                  whole have been used.
 974  *
 975  *          ZYZG_GETPOSITION    :   Gets the current position of the gauge.
 976  *
 977  *          ZYZG_SETDELTAPOS    :   Sets the position of the gauge +/- the
 978  *                                  specified amount.
 979  *
 980  *          ZYZG_SETFGCOLOR     :   Sets the foreground (percent done) color.
 981  *
 982  *          ZYZG_GETFGCOLOR     :   Gets the foreground (percent done) color.
 983  *
 984  *          ZYZG_SETBKCOLOR     :   Sets the background (percent not done)
 985  *                                  color.
 986  *
 987  *          ZYZG_GETBKCOLOR     :   Gets the background (percent not done)
 988  *                                  color.
 989  *
 990  *          WM_SETFONT          :   Sets the font to use for the percentage
 991  *                                  text of the gauge.
 992  *
 993  *          WM_GETFONT          :   Gets the current font in use by the
 994  *                                  gauge.
 995  *
 996  *  NOTES:
 997  *
 998  ** cjp */
 999
1000 /* LRESULT FAR PASCAL */
1001
1002 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1003 {
1004     HFONT       hFont;
1005     PAINTSTRUCT ps;
1006     PZYZGAUGE   pgauge;
1007     RECT        rc;
1008
1009 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
1010     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
1011
1012     /* break to get DefWindowProc() */
1013     switch (uMsg)
1014     {
1015         case WM_CREATE:
1016             /* need to allocate a control block */
1017 //            pgauge = (PZYZGAUGE)LocalAlloc(LPTR, sizeof(ZYZGAUGE));
1018             pgauge = (PZYZGAUGE)malloc(sizeof(ZYZGAUGE));
1019             if (!pgauge)
1020                 return (0L);
1021
1022             /* hang on to this control block */
1023 //            SetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE, (WORD)pgauge);
1024             SetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE, (LONG)pgauge);
1025
1026             /* fill control block with defaults */
1027             pgauge->wRange           = ZYZG_DEF_RANGE;
1028             pgauge->wPosition        = ZYZG_DEF_POSITION;
1029             pgauge->wOrientation     = ZYZG_DEF_ORIENTATION;
1030             pgauge->wWidth3D         = ZYZG_DEF_WIDTH3D;
1031             pgauge->wWidthBezelFace  = ZYZG_DEF_BEZELFACE;
1032             pgauge->rgbTextColor     = rgbDefTextColor;
1033             pgauge->rgbBkColor       = rgbDefBkColor;
1034
1035             /* use system font */
1036             SendMessage(hwnd, WM_SETFONT, (WPARAM)NULL, 0L);
1037
1038             /* go to DefWindowProc() to finish the job */
1039             break;
1040
1041         case WM_DESTROY:
1042             /* get rid of the control's memory */
1043             if (pgauge)
1044 //                LocalFree((HANDLE)pgauge);
1045                 free(pgauge);
1046             break;
1047
1048         case ZYZG_GETPOSITION:
1049             return (pgauge->wPosition);
1050
1051         case ZYZG_GETRANGE:
1052             return (pgauge->wRange);
1053
1054         case ZYZG_GETORIENTATION:
1055             return (pgauge->wOrientation);
1056
1057         case ZYZG_GETWIDTH3D:
1058             return (pgauge->wWidth3D);
1059
1060         case ZYZG_GETBEZELFACE:
1061             return (pgauge->wWidthBezelFace);
1062
1063         case ZYZG_GETBKCOLOR:
1064             return (pgauge->rgbTextColor);
1065
1066         case ZYZG_GETFGCOLOR:
1067             return (pgauge->rgbBkColor);
1068
1069         case ZYZG_SETBKCOLOR:
1070             pgauge->rgbBkColor = lParam;
1071             return (0L);
1072
1073         case ZYZG_SETFGCOLOR:
1074             pgauge->rgbTextColor = lParam;
1075             return (0L);
1076
1077
1078         case ZYZG_SETPOSITION:
1079             pgauge->wPosition = wParam;
1080
1081 zyzgForceRepaint:
1082             GetClientRect(hwnd, &rc);
1083             if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
1084             {
1085                 wParam = (2 * pgauge->wWidth3D) +
1086                             pgauge->wWidthBezelFace + 2;
1087             }
1088
1089             else
1090                 wParam = 1;
1091
1092         InflateRect(&rc, ~(wParam), ~(wParam));
1093             InvalidateRect(hwnd, &rc, FALSE);
1094             UpdateWindow(hwnd);
1095             return (0L);
1096
1097         case ZYZG_SETRANGE:
1098             pgauge->wRange = wParam;
1099             goto zyzgForceRepaint;
1100
1101         case ZYZG_SETORIENTATION:
1102             pgauge->wOrientation = wParam;
1103             goto zyzgForceRepaint;
1104
1105         case ZYZG_SETWIDTH3D:
1106             pgauge->wWidth3D = wParam;
1107
1108 zyzgForceRepaint3D:
1109             InvalidateRect(hwnd, NULL, FALSE);
1110             UpdateWindow(hwnd);
1111             return (0L);
1112
1113         case ZYZG_SETBEZELFACE:
1114             pgauge->wWidthBezelFace = wParam;
1115             goto zyzgForceRepaint3D;
1116
1117         case ZYZG_SETDELTAPOS:
1118 /* Watcom doesn't like the following line so removing typecasts */
1119 /*            (int)pgauge->wPosition += (int)wParam; */
1120             pgauge->wPosition += wParam;
1121             goto zyzgForceRepaint;
1122
1123         case WM_PAINT:
1124             BeginPaint(hwnd, &ps);
1125             gaugePaint(hwnd, ps.hdc);
1126             EndPaint(hwnd, &ps);
1127             return (0L);
1128
1129         case WM_GETFONT:
1130             hFont = pgauge->hFont;
1131
1132             /* if system font, then return NULL handle */
1133             return (long)((hFont == GetStockObject(SYSTEM_FONT)) ? NULL : hFont);
1134
1135         case WM_SETFONT:
1136             /* if NULL hFont, use system font */
1137             hFont = (HFONT)wParam ;
1138             if (!hFont)
1139                 hFont = (HFONT) GetStockObject(SYSTEM_FONT);
1140
1141             pgauge->hFont = hFont;
1142
1143             /* redraw if indicated in message */
1144             if ((BOOL)lParam)
1145             {
1146                 InvalidateRect(hwnd, NULL, TRUE);
1147                 UpdateWindow(hwnd);
1148             }
1149             return (0L);
1150     } /* switch () */
1151
1152     /* let the dialog mangler take care of this message */
1153     return (DefWindowProc(hwnd, uMsg, wParam, lParam));
1154 } /* gaugeWndProc() */
1155
1156
1157 /** EOF: zyzgauge.c **/
1158
1159 #endif // wxUSE_GAUGE