src/pwclib/progress.cxx

   1 /*
   2  * progress.cxx
   3  *
   4  * Progress bar control.
   5  *
   6  * Portable Windows Library
   7  *
   8  * Copyright (c) 1993-1998 Equivalence Pty. Ltd.
   9  *
  10  * The contents of this file are subject to the Mozilla Public License
  11  * Version 1.0 (the "License"); you may not use this file except in
  12  * compliance with the License. You may obtain a copy of the License at
  13  * http://www.mozilla.org/MPL/
  14  *
  15  * Software distributed under the License is distributed on an "AS IS"
  16  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  17  * the License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * The Original Code is Portable Windows Library.
  21  *
  22  * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
  23  *
  24  * Portions are Copyright (C) 1993 Free Software Foundation, Inc.
  25  * All Rights Reserved.
  26  *
  27  * Contributor(s): ______________________________________.
  28  *
  29  * $Log$
  30  * Revision 1.6  1998/12/20 09:14:42  robertj
  31  * Added pragma implementation for GNU compiler.
  32  *
  33  * Revision 1.5  1998/11/30 04:52:16  robertj
  34  * New directory structure
  35  *
  36  * Revision 1.4  1998/09/23 06:29:40  robertj
  37  * Added open source copyright license.
  38  *
  39  */
  40
  41 #ifdef __GNUC__
  42 #pragma implementation "progress.h"
  43 #endif
  44
  45 #include <pwlib.h>
  46
  47 #include <pwclib/progress.h>
  48
  49 PProgressMeter::PProgressMeter(PInteractor * parent,
  50                           unsigned theMin,
  51                           unsigned theMax,
  52                               BOOL percentFlag)
  53   : PControl(parent, PNotifier(), NULL),
  54     minimum(theMin),
  55     maximum(theMax),
  56     value(0),
  57     showPercent(percentFlag)
  58 {
  59   SetDimensions(100, 12, LocalCoords);
  60   SetForegroundColour(PColour::Blue);
  61   SetBackgroundColour(owner->GetButtonBkColour());
  62 }
  63
  64 PProgressMeter::PProgressMeter(PInteractorLayout * parent,
  65                                PRESOURCE_ID ctlID,
  66                                const PNotifier & notify,
  67                                void * valuePtr)
  68   : PControl(parent, ctlID, notify, valuePtr),
  69     minimum(0),
  70     maximum(100),
  71     value(0),
  72     showPercent(TRUE)
  73 {
  74   SetForegroundColour(PColour::Blue);
  75   SetBackgroundColour(owner->GetButtonBkColour());
  76 }
  77
  78 void PProgressMeter::SetValue(unsigned newValue, BOOL update)
  79 {
  80   unsigned int v = PMAX(minimum, PMIN(maximum, newValue));
  81   if (v != value) {
  82     value = v;
  83     Invalidate();
  84     if (update)
  85       Update();
  86   }
  87 }
  88
  89 unsigned PProgressMeter::GetValue() const
  90 {
  91   return value;
  92 }
  93
  94 unsigned PProgressMeter::GetMin() const
  95 {
  96   return minimum;
  97 }
  98
  99 void PProgressMeter::SetMin(unsigned newMin)
 100 {
 101   minimum = newMin;
 102 }
 103
 104 unsigned PProgressMeter::GetMax() const
 105 {
 106   return maximum;
 107 }
 108
 109 void PProgressMeter::SetMax(unsigned newMax)
 110 {
 111   maximum = newMax;
 112 }
 113
 114 void PProgressMeter::OnRedraw(PCanvas & canvas)
 115 {
 116   PRect bounds(GetDrawingBounds(LocalCoords));
 117
 118   PColour fg = GetForegroundColour();
 119   PColour bg = GetBackgroundColour();
 120
 121   canvas.SetFillFgColour(PColour::Clear);
 122   canvas.DrawBevelledRect(bounds, FALSE, TRUE);
 123   bounds.Inflate(-1, -1);
 124
 125   PORDINATE pos = bounds.Left() +
 126                     (bounds.Width() * (value - minimum)) / (maximum - minimum);
 127   PRect done(bounds), notDone(bounds);
 128
 129   done.SetRight(pos);
 130   notDone.SetLeft(PMIN(notDone.Right(), pos));
 131
 132   canvas.SetFillFgColour(bg);
 133   canvas.FillRect(notDone);
 134   canvas.SetFillFgColour(fg);
 135   canvas.FillRect(done);
 136
 137   if (showPercent) {
 138     unsigned long percentage = (100 * (value - minimum)) / (maximum - minimum);
 139     PString str(PString::Printf, "%i%%", percentage);
 140
 141     canvas.SetTextBkColour(PColour::Clear);
 142
 143     // draw left side
 144     canvas.SetClipRect(done);
 145     canvas.SetTextFgColour(bg);
 146     canvas.DrawString(bounds, str, PCanvas::Centred | PCanvas::CentreVertical);
 147
 148     // draw right side
 149     canvas.SetClipRect(notDone);
 150     canvas.SetTextFgColour(fg);
 151     canvas.DrawString(bounds, str, PCanvas::Centred | PCanvas::CentreVertical);
 152   }
 153 }
 154