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