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