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), "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((HWND) GetHWND(), ZYZG_SETFGCOLOR, 0, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 130   SendMessage((HWND) 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((HWND) GetHWND(), SW_SHOW);
 141
 142   return TRUE;
 143 }
 144
 145 void wxGaugeMSW::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 146 {
 147   int currentX, currentY;
 148   GetPosition(&currentX, &currentY);
 149   int x1 = x;
 150   int y1 = y;
 151   int w1 = width;
 152   int h1 = height;
 153
 154   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 155     x1 = currentX;
 156   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 157     y1 = currentY;
 158
 159   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 160
 161   // If we're prepared to use the existing size, then...
 162   if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 163   {
 164     GetSize(&w1, &h1);
 165   }
 166
 167   // Deal with default size (using -1 values)
 168   if (w1<=0)
 169     w1 = DEFAULT_ITEM_WIDTH;
 170
 171   if (h1<=0)
 172     h1 = DEFAULT_ITEM_HEIGHT;
 173
 174   MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 175 }
 176
 177 void wxGaugeMSW::SetShadowWidth(int w)
 178 {
 179   SendMessage((HWND) GetHWND(), ZYZG_SETWIDTH3D, w, 0);
 180 }
 181
 182 void wxGaugeMSW::SetBezelFace(int w)
 183 {
 184   SendMessage((HWND) GetHWND(), ZYZG_SETBEZELFACE, w, 0);
 185 }
 186
 187 void wxGaugeMSW::SetRange(int r)
 188 {
 189   m_rangeMax = r;
 190
 191   SendMessage((HWND) GetHWND(), ZYZG_SETRANGE, r, 0);
 192 }
 193
 194 void wxGaugeMSW::SetValue(int pos)
 195 {
 196   m_gaugePos = pos;
 197
 198   SendMessage((HWND) GetHWND(), ZYZG_SETPOSITION, pos, 0);
 199 }
 200
 201 int wxGaugeMSW::GetShadowWidth(void) const
 202 {
 203   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETWIDTH3D, 0, 0);
 204 }
 205
 206 int wxGaugeMSW::GetBezelFace(void) const
 207 {
 208   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETBEZELFACE, 0, 0);
 209 }
 210
 211 int wxGaugeMSW::GetRange(void) const
 212 {
 213   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETRANGE, 0, 0);
 214 }
 215
 216 int wxGaugeMSW::GetValue(void) const
 217 {
 218   return (int) SendMessage((HWND) GetHWND(), ZYZG_GETPOSITION, 0, 0);
 219 }
 220
 221 void wxGaugeMSW::SetForegroundColour(const wxColour& col)
 222 {
 223   m_foregroundColour = col ;
 224   SendMessage((HWND) GetHWND(), ZYZG_SETFGCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 225 }
 226
 227 void wxGaugeMSW::SetBackgroundColour(const wxColour& col)
 228 {
 229   m_backgroundColour = col ;
 230   SendMessage((HWND) GetHWND(), ZYZG_SETBKCOLOR, 0, RGB(col.Red(), col.Green(), col.Blue()));
 231 }
 232
 233
 234 /** zyz3d.c
 235  *
 236  *  DESCRIPTION:
 237  *      This module contains functions for creating nifty 3D borders
 238  *      around controls like zYzGauge.
 239  *
 240  *  HISTORY:
 241  *      3/14/91     cjp     put in this comment
 242  *      6/19/92     cjp     touched it a bit
 243  *
 244  ** cjp */
 245 // COPYRIGHT:
 246 //
 247 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 248 //
 249 //   You have a royalty-free right to use, modify, reproduce and
 250 //   distribute the Sample Files (and/or any modified version) in
 251 //   any way you find useful, provided that you agree that
 252 //   Microsoft has no warranty obligations or liability for any
 253 //   Sample Application Files which are modified.
 254 //
 255
 256
 257 /* get the includes we need */
 258 #include <windows.h>
 259
 260 /* misc. control flag defines */
 261 #define DRAW3D_IN           0x0001
 262 #define DRAW3D_OUT          0x0002
 263
 264 #define DRAW3D_TOPLINE      0x0004
 265 #define DRAW3D_BOTTOMLINE   0x0008
 266 #define DRAW3D_LEFTLINE     0x0010
 267 #define DRAW3D_RIGHTLINE    0x0020
 268
 269
 270 /* public function prototypes */
 271 void FAR PASCAL Draw3DFaceFrame(HDC, LPRECT, WORD);
 272 void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD);
 273 void FAR PASCAL Draw3DLine(HDC, WORD, WORD, WORD, WORD, WORD);
 274
 275
 276 /** void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 277  *
 278  *  DESCRIPTION:
 279  *      This function draws a flat frame with the current button-face
 280  *      color.
 281  *
 282  *  ARGUMENTS:
 283  *      HDC hdc     :   The DC to draw into.
 284  *
 285  *      LPRECT rc   :   The containing rect for the new frame.
 286  *
 287  *      WORD wWidth :   The width of the frame to draw.
 288  *
 289  *  RETURN (void FAR PASCAL):
 290  *      The frame will have been drawn into the DC.
 291  *
 292  *  NOTES:
 293  *
 294  ** cjp */
 295
 296 void FAR PASCAL Draw3DFaceFrame(HDC hdc, LPRECT rc, WORD wWidth)
 297 {
 298     RECT    rc1;
 299     DWORD   rgbOld;
 300
 301     /* don't go through a bunch of work if we don't have to */
 302     if (!wWidth)
 303         return;
 304
 305     /* set up color to be button-face color--so it may not be gray */
 306     rgbOld = SetBkColor(hdc, GetSysColor(COLOR_BTNFACE));
 307
 308     /* perform CopyRect w/o bloody windows style overhead */
 309     rc1 = *rc;
 310
 311     /* top */
 312     rc1.top = rc->top;
 313     rc1.left = rc->left;
 314     rc1.bottom = rc->top + wWidth;
 315     rc1.right = rc->right;
 316
 317     /* blast it out */
 318     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 319
 320     /* right */
 321     rc1.left = rc->right - wWidth;
 322     rc1.bottom = rc->bottom;
 323
 324     /* blast this part now */
 325     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 326
 327     /* left */
 328     rc1.left = rc->left;
 329     rc1.right = rc->left + wWidth;
 330
 331     /* and another part */
 332     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 333
 334     /* bottom */
 335     rc1.right = rc->right;
 336     rc1.top = rc->bottom - wWidth;
 337
 338     /* finish it off */
 339     ExtTextOut(hdc, rc1.left, rc1.top, ETO_OPAQUE, &rc1, NULL, 0, NULL);
 340
 341     /* restore the old bk color */
 342     SetBkColor(hdc, rgbOld);
 343 } /* Draw3DFaceFrame() */
 344
 345
 346 /** void FAR PASCAL Draw3DRect(HDC, LPRECT, WORD, WORD)
 347  *
 348  *  DESCRIPTION:
 349  *      Draws a 3D rectangle that is shaded.  wFlags can be used to
 350  *      control how the rectangle looks.
 351  *
 352  *  ARGUMENTS:
 353  *      HDC hdc             :   Handle to the device context that will be
 354  *                              used to display the rectangle.
 355  *
 356  *      RECT rect           :   A rectangle describing the dimensions of
 357  *                              the rectangle in device coordinates.
 358  *
 359  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 360  *
 361  *      WORD wFlags         :   The following flags may be passed to describe
 362  *                              the style of the rectangle:
 363  *
 364  *                              DRAW3D_IN   :   The shadow is drawn such that
 365  *                              the box appears to be sunk in to the screen.
 366  *                              This is default if 0 is passed.
 367  *
 368  *                              DRAW3D_OUT  :   The shadow is drawn such that
 369  *                              the box appears to be sticking out of the
 370  *                              screen.
 371  *
 372  *  RETURN (void FAR PASCAL):
 373  *      The 3D looking rectangle will have been drawn into the DC.
 374  *
 375  *  NOTES:
 376  *
 377  ** cjp */
 378
 379 void FAR PASCAL Draw3DRect(HDC hdc, LPRECT lpRect,
 380                                WORD wShadowWidth, WORD wFlags)
 381 {
 382     /* sanity check--don't work if you don't have to! */
 383     if (!wShadowWidth || !RectVisible(hdc, lpRect))
 384         return;
 385
 386     /* draw the top line */
 387     Draw3DLine(hdc, lpRect->left, lpRect->top,
 388                     lpRect->right - lpRect->left,
 389                     wShadowWidth, DRAW3D_TOPLINE | wFlags);
 390
 391     /* right line */
 392     Draw3DLine(hdc, lpRect->right, lpRect->top,
 393                     lpRect->bottom - lpRect->top,
 394                     wShadowWidth, DRAW3D_RIGHTLINE | wFlags);
 395
 396     /* bottom line */
 397     Draw3DLine(hdc, lpRect->left, lpRect->bottom,
 398                     lpRect->right - lpRect->left,
 399                     wShadowWidth, DRAW3D_BOTTOMLINE | wFlags);
 400
 401     /* left line */
 402     Draw3DLine(hdc, lpRect->left, lpRect->top,
 403                     lpRect->bottom - lpRect->top,
 404                     wShadowWidth, DRAW3D_LEFTLINE | wFlags);
 405 } /* Draw3DRect() */
 406
 407
 408 /** void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 409  *
 410  *  DESCRIPTION:
 411  *      Draws a 3D line that can be used to make a 3D box.
 412  *
 413  *  ARGUMENTS:
 414  *      HDC hdc             :   Handle to the device context that will be
 415  *                              used to display the 3D line.
 416  *
 417  *      WORD x, y           :   Coordinates of the beginning of the line.
 418  *                              These coordinates are in device units and
 419  *                              represent the _outside_ most point. Horiz-
 420  *                              ontal lines are drawn from left to right and
 421  *                              vertical lines are drawn from top to bottom.
 422  *
 423  *      WORD wShadowWidth   :   Width of the shadow in device coordinates.
 424  *
 425  *      WORD  wFlags        :   The following flags may be passed to
 426  *                              describe the style of the 3D line:
 427  *
 428  *                              DRAW3D_IN   :   The shadow is drawn such that
 429  *                              the box appears to be sunk in to the screen.
 430  *                              This is default if 0 is passed.
 431  *
 432  *                              DRAW3D_OUT  :   The shadow is drawn such that
 433  *                              the box appears to be sticking out of the
 434  *                              screen.
 435  *
 436  *                              DRAW3D_TOPLINE, _BOTTOMLINE, _LEFTLINE, and
 437  *                              _RIGHTLINE  :   Specifies that a "top",
 438  *                              "Bottom", "Left", or"Right" line is to be
 439  *                              drawn.
 440  *
 441  *  RETURN (void FAR PASCAL):
 442  *      The line will have been drawn into the DC.
 443  *
 444  *  NOTES:
 445  *
 446  ** cjp */
 447
 448 void FAR PASCAL Draw3DLine(HDC hdc, WORD x, WORD y, WORD nLen,
 449                                WORD wShadowWidth, WORD wFlags)
 450 {
 451     HBRUSH  hOldBrush;
 452     HPEN    hOldPen;
 453     BOOL    fDark;
 454     POINT   Point[ 4 ];         /* define a polgon with 4 points    */
 455
 456     /* if width is zero, don't do nothin'! */
 457     if (!wShadowWidth)
 458         return;
 459
 460     /* define shape of polygon--origin is always the same */
 461     Point[0].x = x;
 462     Point[0].y = y;
 463
 464     /*  To do this we'll simply draw a polygon with four sides, using
 465      *  the appropriate brush.  I dare you to ask me why this isn't a
 466      *  switch/case!
 467      */
 468     if (wFlags & DRAW3D_TOPLINE)
 469     {
 470         /* across to right */
 471         Point[1].x = x + nLen - (wShadowWidth == 1 ? 1 : 0);
 472         Point[1].y = y;
 473
 474         /* down/left */
 475         Point[2].x = x + nLen - wShadowWidth;
 476         Point[2].y = y + wShadowWidth;
 477
 478         /* accross to left */
 479         Point[3].x = x + wShadowWidth;
 480         Point[3].y = y + wShadowWidth;
 481
 482         /* select 'dark' brush if 'in'--'light' for 'out' */
 483         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 484     }
 485
 486     /* possibly the bottom? */
 487     else if (wFlags & DRAW3D_BOTTOMLINE)
 488     {
 489         /* across to right */
 490         Point[1].x = x + nLen;
 491         Point[1].y = y;
 492
 493         /* up/left */
 494         Point[2].x = x + nLen - wShadowWidth;
 495         Point[2].y = y - wShadowWidth;
 496
 497         /* accross to left */
 498         Point[3].x = x + wShadowWidth;
 499         Point[3].y = y - wShadowWidth;
 500
 501         /* select 'light' brush if 'in' */
 502         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 503     }
 504
 505     /* ok, it's gotta be left? */
 506     else if (wFlags & DRAW3D_LEFTLINE)
 507     {
 508         /* down */
 509         Point[1].x = x;
 510         Point[1].y = y + nLen - (wShadowWidth == 1 ? 1 : 0);
 511
 512         /* up/right */
 513         Point[2].x = x + wShadowWidth;
 514         Point[2].y = y + nLen - wShadowWidth;
 515
 516         /* down */
 517         Point[3].x = x + wShadowWidth;
 518         Point[3].y = y + wShadowWidth;
 519
 520         /* select 'dark' brush if 'in'--'light' for 'out' */
 521         fDark = (wFlags & DRAW3D_IN) ? TRUE : FALSE;
 522     }
 523
 524     /* well maybe it's for the right side? */
 525     else if (wFlags & DRAW3D_RIGHTLINE)
 526     {
 527         /* down */
 528         Point[1].x = x;
 529         Point[1].y = y + nLen;
 530
 531         /* up/left */
 532         Point[2].x = x - wShadowWidth;
 533         Point[2].y = y + nLen - wShadowWidth;
 534
 535         /* up */
 536         Point[3].x = x - wShadowWidth;
 537         Point[3].y = y + wShadowWidth;
 538
 539         /* select 'light' brush if 'in' */
 540         fDark = (wFlags & DRAW3D_IN) ? FALSE : TRUE;
 541     }
 542
 543     /* bad drugs? */
 544     else return;
 545
 546     /* select NULL_PEN for no borders */
 547     hOldPen = (HPEN) SelectObject(hdc, GetStockObject(NULL_PEN));
 548
 549     /* select the appropriate color for the fill */
 550     if (fDark)
 551         hOldBrush = (HBRUSH) SelectObject(hdc, GetStockObject(GRAY_BRUSH));
 552     else
 553         hOldBrush = (HBRUSH) SelectObject(hdc, GetStockObject(WHITE_BRUSH));
 554
 555     /* finally, draw the dern thing */
 556     Polygon(hdc, (LPPOINT)&Point, 4);
 557
 558     /* restore what we killed */
 559     SelectObject(hdc, hOldBrush);
 560     SelectObject(hdc, hOldPen);
 561 } /* Draw3DLine() */
 562
 563 /** EOF: zyz3d.c **/
 564
 565 /** zyzgauge.c
 566  *
 567  *  DESCRIPTION:
 568  *      Yet another 'Gas Gauge Custom Control.'  This control gives you
 569  *      a 'progress bar' class (named zYzGauge) for use in your applications.
 570  *      You can set the range, position, font, color, orientation, and 3d
 571  *      effect of the gauge by sending messages to the control.
 572  *
 573  *      Before you can use this control, you MUST first export the window
 574  *      procedure for the control (or define it with the _export keyword):
 575  *
 576  *          EXPORTS     gaugeWndProc
 577  *
 578  *      You then need initialize the class before you use it:
 579  *
 580  *          if (!gaugeInit(hInstance))
 581  *              die a horrible death
 582  *          else
 583  *              you are good to go
 584  *
 585  *      The colors used by the control default to black and white if you
 586  *      are running on a mono-display.  They default to blue and white
 587  *      if you are on a color display.  You enable the 3D effect by setting
 588  *      the ZYZGS_3D style flag in the styles field of the control (like
 589  *      any other control).
 590  *
 591  *      To select your own colors, you can send the ZYZG_SETFGCOLOR and
 592  *      ZYZG_SETBKCOLOR messages to set the foreground (percent done) and
 593  *      background (percent not done) colors.  The lParam is the RGB()
 594  *      value--wParam is ignored.
 595  *
 596  *      In all of the following ZYZG_??? messages, the arguments are
 597  *      WORDS.  If you are setting parameters, the value is sent as
 598  *      the wParam (lParam is ignored).  If you are getting parameters,
 599  *      the value is returned as a LONG and should be cast to a *signed*
 600  *      integer.
 601  *
 602  *      To set the depth of the 3D effect (if enabled), you can send the
 603  *      ZYZG_SETBEZELFACE and ZYZG_SETWIDTH3D messages.  The bezel face
 604  *      is the flat top on the 3D border--its color will be that of the
 605  *      button-face.  The 3D width is the width of the bezel itself; inside
 606  *      and outside.  The light color is white, the dark color is gray.
 607  *      Both widths *can* be zero--both default to 2 which looks to me.
 608  *
 609  *      The range of the control can be set by sending the ZYZG_SETRANGE
 610  *      message to the control.  It can be any integer from 1 to 32767.
 611  *      What this specifies is the number of pieces that create a whole.
 612  *      The default is 100.  You can get the current range setting by
 613  *      sending the ZYZG_GETRANGE message to the control.
 614  *
 615  *      The position (number of pieces out of the whole have been used) is
 616  *      set with the ZYZG_SETPOSITION message.  It can be any integer from
 617  *      0 to the current range setting of the control--it will be clipped
 618  *      if the position is out of bounds.  The default position is 0.  You
 619  *      can get the current position at any time with the ZYZG_GETPOSITION
 620  *      message.
 621  *
 622  *      You can also set the range using a delta from the current range.
 623  *      This is done by sending the ZYZG_SETDELTAPOS message with wParam
 624  *      set to a _signed_ integer value within the range of the control.
 625  *
 626  *      The font used for the percentage text can be set using the standard
 627  *      WM_SETFONT message.  You can get the current font at any time with
 628  *      the WM_GETFONT message.
 629  *
 630  *      The orientation can be left to right, right to left, bottom to top,
 631  *      or top to bottom.  Whatever suits your needs.  You set this by
 632  *      sending the ZYZG_ORIENTATION message to the control with one of
 633  *      the following values (default is ZYZG_ORIENT_LEFTTORIGHT):
 634  *
 635  *          ZYZG_ORIENT_LEFTTORIGHT (0)
 636  *          ZYZG_ORIENT_RIGHTTOLEFT (1)
 637  *          ZYZG_ORIENT_BOTTOMTOTOP (2)
 638  *          ZYZG_ORIENT_TOPTOBOTTOM (3)
 639  *
 640  *  HISTORY:
 641  *      3/12/91     cjp     put in this comment
 642  *      6/19/92     cjp     touched it a bit
 643  *
 644  ** cjp */
 645 // COPYRIGHT:
 646 //
 647 //   (C) Copyright Microsoft Corp. 1992.  All rights reserved.
 648 //
 649 //   You have a royalty-free right to use, modify, reproduce and
 650 //   distribute the Sample Files (and/or any modified version) in
 651 //   any way you find useful, provided that you agree that
 652 //   Microsoft has no warranty obligations or liability for any
 653 //   Sample Application Files which are modified.
 654 //
 655
 656
 657 /* get the includes we need */
 658 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__)
 659 #include <malloc.h>
 660 #endif
 661 #include <stdio.h>
 662 #include <string.h>
 663 #include <stdlib.h>
 664 // #include "zyz3d.h"
 665 // #include "zyzgauge.h"
 666
 667
 668 /* static global variables */
 669 static char gszzYzGaugeClass[] = "zYzGauge";
 670
 671
 672 /* window word position definitions */
 673 #define ZYZG_WW_PZYZGAUGE   0
 674 /* #define ZYZG_WW_EXTRABYTES  2 */
 675 #define ZYZG_WW_EXTRABYTES  4
 676
 677
 678 /* control block structure typedef */
 679 typedef struct tZYZGAUGE
 680 {
 681     WORD    wRange;
 682     WORD    wPosition;
 683     WORD    wOrientation;
 684     WORD    wWidth3D;
 685     WORD    wWidthBezelFace;
 686     HFONT   hFont;
 687     DWORD   rgbTextColor;
 688     DWORD   rgbBkColor;
 689
 690 } ZYZGAUGE, *PZYZGAUGE, FAR *LPZYZGAUGE;
 691
 692
 693 /* some default values for the control */
 694 #define ZYZG_DEF_RANGE          100
 695 #define ZYZG_DEF_POSITION       0
 696 #define ZYZG_DEF_ORIENTATION    ZYZG_ORIENT_LEFTTORIGHT
 697 #define ZYZG_DEF_WIDTH3D        2
 698 #define ZYZG_DEF_BEZELFACE      2
 699
 700
 701
 702 /* the default settings for drawing colors--display dependent */
 703 static DWORD    rgbDefTextColor;
 704 static DWORD    rgbDefBkColor;
 705 static BOOL     fSupport3D;
 706
 707 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
 708 #define APIENTRY FAR PASCAL
 709 #endif
 710
 711 #ifdef __WIN32__
 712 #define _EXPORT /**/
 713 #else
 714 #define _EXPORT _export
 715 typedef signed short int SHORT ;
 716 #endif
 717
 718 /* internal function prototypes */
 719 static void PASCAL gaugePaint(HWND, HDC);
 720 /* LRESULT FAR PASCAL */
 721 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND, UINT, WPARAM, LPARAM);
 722
 723
 724
 725 /** BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 726  *
 727  *  DESCRIPTION:
 728  *      Registers the window class for the zYzGauge control.  Performs
 729  *      other initialization for the zYzGauge text control.  This must
 730  *      be done before the zYzGauge control is used--or it will fail
 731  *      and your dialog box will not open!
 732  *
 733  *  ARGUMENTS:
 734  *      HINSTANCE hInstance :   Instance handle to register class with.
 735  *
 736  *  RETURN (BOOL FAR):
 737  *      The return value is TRUE if the zYzGauge class was successfully
 738  *      registered.  It is FALSE if the initialization fails.
 739  *
 740  *  NOTES:
 741  *
 742  ** cjp */
 743
 744 //#pragma alloc_text(init, gaugeInit)
 745
 746 BOOL FAR PASCAL gaugeInit(HINSTANCE hInstance)
 747 {
 748     static BOOL fRegistered = FALSE;
 749     WNDCLASS    wc;
 750     HDC         hdc;
 751
 752     /* assume already registered if not first instance */
 753     if (fRegistered)
 754         return (TRUE);
 755
 756     /* fill in the class structure for the zyzgauge control */
 757     wc.hCursor          = LoadCursor(NULL, IDC_ARROW);
 758     wc.hIcon            = NULL;
 759     wc.lpszMenuName     = NULL;
 760     wc.lpszClassName    = gszzYzGaugeClass;
 761     wc.hbrBackground    = (HBRUSH)(COLOR_WINDOW + 1);
 762     wc.hInstance        = hInstance;
 763
 764 #ifdef ZYZGAUGE_DLL
 765     wc.style            = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
 766 #else
 767     wc.style            = CS_HREDRAW | CS_VREDRAW;
 768 #endif
 769
 770     wc.lpfnWndProc      = gaugeWndProc;
 771     wc.cbClsExtra       = 0;
 772     wc.cbWndExtra       = ZYZG_WW_EXTRABYTES;
 773
 774     /* attempt to register it--return FALSE if fail */
 775     if (!RegisterClass(&wc))
 776         return (FALSE);
 777
 778     /*  Get a DC to determine whether device is mono or not, and set
 779      *  default foreground/background colors as appropriate.
 780      */
 781     if ((hdc = CreateIC("DISPLAY", NULL, NULL, 0L)))
 782     {
 783         /* check for mono-display */
 784         if ((GetDeviceCaps(hdc, BITSPIXEL) == 1) &&
 785              (GetDeviceCaps(hdc, PLANES) == 1))
 786         {
 787             /* using a mono DC--white foreground, black background */
 788             rgbDefTextColor = RGB(255, 255, 255);
 789             rgbDefBkColor = RGB(0, 0, 0);
 790         }
 791
 792         /* good! we have color: blue foreground, white background */
 793         else
 794         {
 795             rgbDefTextColor = RGB(0, 0, 255);
 796             rgbDefBkColor = RGB(255, 255, 255);
 797         }
 798
 799         /* need at _least_ 8 for two shades of gray (>=VGA) */
 800         fSupport3D = (GetDeviceCaps(hdc, NUMCOLORS) >= 8) ? TRUE : FALSE;
 801
 802         /* get rid of the DC (IC) */
 803         DeleteDC(hdc);
 804     }
 805
 806     /* uh-oh... can't get DC (IC)... fail */
 807     else
 808     {
 809         /* unregister the class */
 810         UnregisterClass(gszzYzGaugeClass, hInstance);
 811         return (FALSE);
 812     }
 813
 814     /* return success */
 815     return (fRegistered = TRUE);
 816 } /* gaugeInit() */
 817
 818
 819 /** static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 820  *
 821  *  DESCRIPTION:
 822  *      This function is responsible for painting the zYzGauge control.
 823  *
 824  *  ARGUMENTS:
 825  *      HWND hwnd   :   The window handle for the gauge.
 826  *
 827  *      HDC hdc     :   The DC for the gauge's window.
 828  *
 829  *  RETURN (void):
 830  *      The control will have been painted.
 831  *
 832  *  NOTES:
 833  *
 834  ** cjp */
 835
 836 static void PASCAL gaugePaint(HWND hwnd, HDC hdc)
 837 {
 838     PZYZGAUGE   pgauge;
 839     WORD        iRange, iPos;
 840     WORD        Offset = 1;
 841     DWORD       dwExtent;
 842     RECT        rc1, rc2;
 843     HFONT       hFont;
 844     char        ach[ 6 ];
 845     WORD        dx, dy, wGomerX, wGomerY;
 846 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead,
 847  * which needs a SIZE* parameter */
 848 #if defined(__WIN32__)
 849     SIZE size;
 850 #endif
 851
 852     /* get pointer to the control's control block */
 853 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
 854     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
 855
 856     /* set the colors into for the gauge into the control */
 857     SetTextColor(hdc, pgauge->rgbTextColor);
 858     SetBkColor(hdc, pgauge->rgbBkColor);
 859
 860     /* draw black rectangle for gauge */
 861     GetClientRect(hwnd, &rc1);
 862
 863     /* draw a black border on the _outside_ */
 864     FrameRect(hdc, &rc1, (HBRUSH) GetStockObject(BLACK_BRUSH));
 865
 866     /* we want to draw _just inside_ the black border */
 867     InflateRect(&rc1, -1, -1);
 868
 869     /* one line thick so far... */
 870 //    Offset = (WORD) 1;
 871
 872     /* for 3D stuff, we need to have at least two shades of gray */
 873     if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
 874     {
 875         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_OUT);
 876         InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 877
 878         Draw3DFaceFrame(hdc, &rc1, pgauge->wWidthBezelFace);
 879         InflateRect(&rc1, ~(pgauge->wWidthBezelFace), ~(pgauge->wWidthBezelFace));
 880
 881         Draw3DRect(hdc, &rc1, pgauge->wWidth3D, DRAW3D_IN);
 882         InflateRect(&rc1, ~(pgauge->wWidth3D), ~(pgauge->wWidth3D));
 883
 884         /* draw a black border on the _inside_ */
 885         FrameRect(hdc, &rc1, (HBRUSH) GetStockObject(BLACK_BRUSH));
 886
 887         /* we want to draw _just inside_ the black border */
 888         InflateRect(&rc1, -1, -1);
 889
 890         /* add all the other pixels into the border width */
 891         Offset += (2 * pgauge->wWidth3D) + pgauge->wWidthBezelFace + 1;
 892     }
 893
 894     /* dup--one rc for 'how much filled', one rc for 'how much empty' */
 895     rc2 = rc1;
 896
 897     /* get the range--make sure it's a valid range */
 898     if ((iRange = pgauge->wRange) <= 0)
 899         iRange = 1;
 900
 901     /* get the position--greater than 100% would be bad */
 902     if ((iPos = pgauge->wPosition) > iRange)
 903         iPos = iRange;
 904
 905     /* compute the actual size of the gauge */
 906     dx = rc1.right - rc1.left;
 907     dy = rc1.bottom - rc1.top;
 908     wGomerX = (WORD)((DWORD)iPos * dx / iRange);
 909     wGomerY = (WORD)((DWORD)iPos * dy / iRange);
 910
 911     /* get the orientation and munge rects accordingly */
 912     switch (pgauge->wOrientation)
 913     {
 914         case ZYZG_ORIENT_RIGHTTOLEFT:
 915             rc1.left = rc2.right = rc1.right - wGomerX;
 916             break;
 917
 918         case ZYZG_ORIENT_BOTTOMTOTOP:
 919             rc1.top = rc2.bottom = rc1.bottom - wGomerY;
 920             break;
 921
 922         case ZYZG_ORIENT_TOPTOBOTTOM:
 923             rc1.bottom = rc2.top += wGomerY;
 924             break;
 925
 926         default:
 927             rc1.right = rc2.left += wGomerX;
 928             break;
 929     } /* switch () */
 930
 931     /* select the correct font */
 932     hFont = (HFONT) SelectObject(hdc, pgauge->hFont);
 933
 934     /* build up a string to blit out--ie the meaning of life: "42%" */
 935     wsprintf(ach, "%3d%%", (WORD)((DWORD)iPos * 100 / iRange));
 936 /* Win32s has no GetTextExtent(); let's try GetTextExtentPoint() instead */
 937 #if defined(__WIN32__)
 938     GetTextExtentPoint(hdc, ach, wGomerX = lstrlen(ach), &size);
 939     dwExtent = size.cx;
 940 #else
 941     dwExtent = GetTextExtent(hdc, ach, wGomerX = lstrlen(ach));
 942 #endif
 943
 944
 945     /*  Draw the finished (ie the percent done) side of box.  If
 946      *  ZYZG_WW_POSITION is 42, (in range of 0 to 100) this ExtTextOut
 947      *  draws the meaning of life (42%) bar.
 948      */
 949     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 950                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 951                     ETO_OPAQUE | ETO_CLIPPED, &rc2, ach, wGomerX, NULL);
 952
 953     /*  Reverse fore and back colors for drawing the undone (ie the non-
 954      *  finished) side of the box.
 955      */
 956     SetBkColor(hdc, pgauge->rgbTextColor);
 957     SetTextColor(hdc, pgauge->rgbBkColor);
 958
 959     ExtTextOut(hdc, (dx - LOWORD(dwExtent)) / 2 + Offset,
 960                     (dy - HIWORD(dwExtent)) / 2 + Offset,
 961                     ETO_OPAQUE | ETO_CLIPPED, &rc1, ach, wGomerX, NULL);
 962
 963     /* unselect the font */
 964     SelectObject(hdc, hFont);
 965 } /* gaugePaint() */
 966
 967
 968 /** LRESULT FAR PASCAL gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 969  *
 970  *  DESCRIPTION:
 971  *      This is the control's window procedure.  Its purpose is to handle
 972  *      special messages for this custom control.
 973  *
 974  *      The special control messages for the gauge control are:
 975  *
 976  *          ZYZG_SETRANGE       :   Sets the range of the gauge.  In other
 977  *                                  words, the number of parts that make a
 978  *                                  whole.
 979  *
 980  *          ZYZG_GETRANGE       :   Returns the current range of the gauge.
 981  *
 982  *          ZYZG_SETORIENTATION :   Sets the orientation of the gauge.  This
 983  *                                  can be one of the ZYZG_ORIENT_?? msgs.
 984  *
 985  *          ZYZG_GETORIENTATION :   Gets the current orientation of the
 986  *                                  gauge.
 987  *
 988  *          ZYZG_SETPOSITION    :   Sets the current position of the gauge.
 989  *                                  In other words, how many pieces of the
 990  *                                  whole have been used.
 991  *
 992  *          ZYZG_GETPOSITION    :   Gets the current position of the gauge.
 993  *
 994  *          ZYZG_SETDELTAPOS    :   Sets the position of the gauge +/- the
 995  *                                  specified amount.
 996  *
 997  *          ZYZG_SETFGCOLOR     :   Sets the foreground (percent done) color.
 998  *
 999  *          ZYZG_GETFGCOLOR     :   Gets the foreground (percent done) color.
1000  *
1001  *          ZYZG_SETBKCOLOR     :   Sets the background (percent not done)
1002  *                                  color.
1003  *
1004  *          ZYZG_GETBKCOLOR     :   Gets the background (percent not done)
1005  *                                  color.
1006  *
1007  *          WM_SETFONT          :   Sets the font to use for the percentage
1008  *                                  text of the gauge.
1009  *
1010  *          WM_GETFONT          :   Gets the current font in use by the
1011  *                                  gauge.
1012  *
1013  *  NOTES:
1014  *
1015  ** cjp */
1016
1017 /* LRESULT FAR PASCAL */
1018
1019 LRESULT APIENTRY _EXPORT gaugeWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1020 {
1021     HFONT       hFont;
1022     PAINTSTRUCT ps;
1023     PZYZGAUGE   pgauge;
1024     RECT        rc;
1025
1026 //    pgauge = (PZYZGAUGE)GetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE);
1027     pgauge = (PZYZGAUGE)GetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE);
1028
1029     /* break to get DefWindowProc() */
1030     switch (uMsg)
1031     {
1032         case WM_CREATE:
1033             /* need to allocate a control block */
1034 //            pgauge = (PZYZGAUGE)LocalAlloc(LPTR, sizeof(ZYZGAUGE));
1035             pgauge = (PZYZGAUGE)malloc(sizeof(ZYZGAUGE));
1036             if (!pgauge)
1037                 return (0L);
1038
1039             /* hang on to this control block */
1040 //            SetWindowWord(hwnd, ZYZG_WW_PZYZGAUGE, (WORD)pgauge);
1041             SetWindowLong(hwnd, ZYZG_WW_PZYZGAUGE, (LONG)pgauge);
1042
1043             /* fill control block with defaults */
1044             pgauge->wRange           = ZYZG_DEF_RANGE;
1045             pgauge->wPosition        = ZYZG_DEF_POSITION;
1046             pgauge->wOrientation     = ZYZG_DEF_ORIENTATION;
1047             pgauge->wWidth3D         = ZYZG_DEF_WIDTH3D;
1048             pgauge->wWidthBezelFace  = ZYZG_DEF_BEZELFACE;
1049             pgauge->rgbTextColor     = rgbDefTextColor;
1050             pgauge->rgbBkColor       = rgbDefBkColor;
1051
1052             /* use system font */
1053             SendMessage(hwnd, WM_SETFONT, (WPARAM)NULL, 0L);
1054
1055             /* go to DefWindowProc() to finish the job */
1056             break;
1057
1058         case WM_DESTROY:
1059             /* get rid of the control's memory */
1060             if (pgauge)
1061 //                LocalFree((HANDLE)pgauge);
1062                 free(pgauge);
1063             break;
1064
1065         case ZYZG_GETPOSITION:
1066             return (pgauge->wPosition);
1067
1068         case ZYZG_GETRANGE:
1069             return (pgauge->wRange);
1070
1071         case ZYZG_GETORIENTATION:
1072             return (pgauge->wOrientation);
1073
1074         case ZYZG_GETWIDTH3D:
1075             return (pgauge->wWidth3D);
1076
1077         case ZYZG_GETBEZELFACE:
1078             return (pgauge->wWidthBezelFace);
1079
1080         case ZYZG_GETBKCOLOR:
1081             return (pgauge->rgbTextColor);
1082
1083         case ZYZG_GETFGCOLOR:
1084             return (pgauge->rgbBkColor);
1085
1086         case ZYZG_SETBKCOLOR:
1087             pgauge->rgbBkColor = lParam;
1088             return (0L);
1089
1090         case ZYZG_SETFGCOLOR:
1091             pgauge->rgbTextColor = lParam;
1092             return (0L);
1093
1094
1095         case ZYZG_SETPOSITION:
1096             pgauge->wPosition = wParam;
1097
1098 zyzgForceRepaint:
1099             GetClientRect(hwnd, &rc);
1100             if ((GetWindowLong(hwnd, GWL_STYLE) & ZYZGS_3D) && fSupport3D)
1101             {
1102                 wParam = (2 * pgauge->wWidth3D) +
1103                             pgauge->wWidthBezelFace + 2;
1104             }
1105
1106             else
1107                 wParam = 1;
1108
1109             InflateRect(&rc, ~(wParam), ~(wParam));
1110             InvalidateRect(hwnd, &rc, FALSE);
1111             UpdateWindow(hwnd);
1112             return (0L);
1113
1114         case ZYZG_SETRANGE:
1115             pgauge->wRange = wParam;
1116             goto zyzgForceRepaint;
1117
1118         case ZYZG_SETORIENTATION:
1119             pgauge->wOrientation = wParam;
1120             goto zyzgForceRepaint;
1121
1122         case ZYZG_SETWIDTH3D:
1123             pgauge->wWidth3D = wParam;
1124
1125 zyzgForceRepaint3D:
1126             InvalidateRect(hwnd, NULL, FALSE);
1127             UpdateWindow(hwnd);
1128             return (0L);
1129
1130         case ZYZG_SETBEZELFACE:
1131             pgauge->wWidthBezelFace = wParam;
1132             goto zyzgForceRepaint3D;
1133
1134         case ZYZG_SETDELTAPOS:
1135 /* Watcom doesn't like the following line so removing typecasts */
1136 /*            (int)pgauge->wPosition += (int)wParam; */
1137             pgauge->wPosition += wParam;
1138             goto zyzgForceRepaint;
1139
1140         case WM_PAINT:
1141             BeginPaint(hwnd, &ps);
1142             gaugePaint(hwnd, ps.hdc);
1143             EndPaint(hwnd, &ps);
1144             return (0L);
1145
1146         case WM_GETFONT:
1147             hFont = pgauge->hFont;
1148
1149             /* if system font, then return NULL handle */
1150             return (long)((hFont == GetStockObject(SYSTEM_FONT)) ? NULL : hFont);
1151
1152         case WM_SETFONT:
1153             /* if NULL hFont, use system font */
1154             if (!(hFont = (HFONT)wParam))
1155                 hFont = (HFONT) GetStockObject(SYSTEM_FONT);
1156
1157             pgauge->hFont = hFont;
1158
1159             /* redraw if indicated in message */
1160             if ((BOOL)lParam)
1161             {
1162                 InvalidateRect(hwnd, NULL, TRUE);
1163                 UpdateWindow(hwnd);
1164             }
1165             return (0L);
1166     } /* switch () */
1167
1168     /* let the dialog mangler take care of this message */
1169     return (DefWindowProc(hwnd, uMsg, wParam, lParam));
1170 } /* gaugeWndProc() */
1171
1172
1173 /** EOF: zyzgauge.c **/
1174
1175 #endif // wxUSE_GAUGE