src/pwclib/splitter.cxx

   1 /*
   2  * splitter.cxx
   3  *
   4  * Splitter interactor class.
   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 1.9  1998/12/20 09:14:46  robertj
  31  * Added pragma implementation for GNU compiler.
  32  *
  33  * Revision 1.8  1998/11/30 04:52:19  robertj
  34  * New directory structure
  35  *
  36  * Revision 1.7  1998/09/23 06:29:58  robertj
  37  * Added open source copyright license.
  38  *
  39  * Revision 1.6  1996/04/30 12:34:03  robertj
  40  * Changed "inPixels" boolean to enum for three coordinate systems.
  41  *
  42  * Revision 1.5  1995/12/10 11:43:12  robertj
  43  * Fixed automatic operator translation incompatibility amongst compilers.
  44  *
  45  * Revision 1.4  1995/07/02 01:21:00  robertj
  46  * Removed OnDoubleClick() and added BOOL to OnMouseDown() for double click.
  47  *
  48  * Revision 1.3  1995/06/04 12:46:10  robertj
  49  * Added function to set splitter split by percentage.
  50  *
  51  * Revision 1.2  1995/03/22 13:53:55  robertj
  52  * Fixed integer overflow problem in 16 bit windows.
  53  *
  54  * Revision 1.1  1994/10/23  03:36:53  robertj
  55  * Initial revision
  56  *
  57  */
  58
  59 #ifdef __GNUC__
  60 #pragma implementation "splitter.h"
  61 #endif
  62
  63 #include <pwlib.h>
  64 #include <pwclib/splitter.h>
  65
  66 #define new PNEW
  67
  68
  69 //////////////////////////////////////////////////////////////////////////////
  70 // PSplitter
  71
  72 PSplitter::PSplitter(PInteractor * parent)
  73   : PInteractor(parent),
  74     splitBar(owner->GetTitledBorderSize())
  75 {
  76   trackCanvas = NULL;
  77 }
  78
  79
  80 void PSplitter::OnMouseMove(PKeyCode, const PPoint & where)
  81 {
  82   if (trackCanvas != NULL) {
  83     trackCanvas->DrawRect(splitBar);
  84     TrackSplitter(where);
  85     trackCanvas->DrawRect(splitBar);
  86   }
  87 }
  88
  89
  90 void PSplitter::OnMouseDown(PKeyCode, const PPoint &, BOOL)
  91 {
  92   if (trackCanvas != NULL) {
  93     ReleaseMouse();
  94     delete trackCanvas;
  95   }
  96
  97   GrabMouse();
  98   trackCanvas = new PDrawCanvas(this, TRUE, TRUE);
  99   trackCanvas->SetPenMode(PCanvas::InvertDst);
 100   trackCanvas->SetFillMode(PCanvas::InvertDst);
 101   trackCanvas->DrawRect(splitBar);
 102 }
 103
 104
 105 void PSplitter::OnMouseUp(PKeyCode button, const PPoint & where)
 106 {
 107   if (trackCanvas != NULL) {
 108     OnMouseMove(button, where);
 109     ReleaseMouse();
 110     delete trackCanvas;
 111     trackCanvas = NULL;
 112     SetDimensions(GetDimensions(PixelCoords), PixelCoords);
 113   }
 114 }
 115
 116
 117 void PSplitter::OnRedraw(PCanvas & canvas)
 118 {
 119   canvas.SetMappingRect(canvas.GetViewportRect());
 120   canvas.SetFillFgColour(GetBorderColour());
 121   canvas.DrawRect(splitBar);
 122 }
 123
 124
 125 void PSplitter::AdjustChildInteractors(PDIMENSION width1, PDIMENSION height1,
 126            PORDINATE  x2, PORDINATE  y2, PDIMENSION width2, PDIMENSION height2)
 127 {
 128   PINDEX num = GetNumChildren();
 129   if (num >= 1) {
 130     if (num >= 2) {
 131       PRect rect(0, 0, width1, height1);
 132       children[num-2].AutoAdjustBounds(rect);
 133     }
 134     PRect rect(x2, y2, width2, height2);
 135     children[num-1].AutoAdjustBounds(rect);
 136   }
 137 }
 138
 139
 140 //////////////////////////////////////////////////////////////////////////////
 141 // PVerticalSplitter
 142
 143 PVerticalSplitter::PVerticalSplitter(PInteractor * parent)
 144   : PSplitter(parent)
 145 {
 146   SetCursor(PCursor(PSTD_ID_CURSOR_LEFTRIGHT));
 147   SetDimensions(parent->GetDimensions(PixelCoords), PixelCoords);
 148 }
 149
 150
 151 void PVerticalSplitter::SetPercent(PDIMENSION percent)
 152 {
 153   PAssert(percent < 100, PInvalidParameter);
 154   PDim dim = GetDimensions(PixelCoords);
 155   splitBar.SetX(dim.Width()*percent/100);
 156   AdjustChildInteractors(splitBar.Left(), dim.Height(),
 157                          splitBar.Right(), 0,
 158                          dim.Width()-splitBar.Right(), dim.Height());
 159 }
 160
 161
 162 void PVerticalSplitter::_SetDimensions(PDIMENSION width, PDIMENSION height,
 163                                        CoordinateSystem coords)
 164 {
 165   PDim oldDim = GetDimensions(PixelCoords);
 166   PSplitter::_SetDimensions(width, height, coords);
 167   PDim newDim = GetDimensions(PixelCoords);
 168
 169   if (oldDim.Width() > 0)
 170     splitBar.SetX((PORDINATE)(splitBar.X()*(long)newDim.Width()/oldDim.Width()));
 171   else
 172     splitBar.SetX((newDim.Width()-splitBar.Width())/2);
 173   splitBar.SetHeight(newDim.Height());
 174
 175   AdjustChildInteractors(splitBar.Left(), newDim.Height(),
 176                          splitBar.Right(), 0,
 177                          newDim.Width()-splitBar.Right(), newDim.Height());
 178 }
 179
 180
 181 void PVerticalSplitter::TrackSplitter(const PPoint & where)
 182 {
 183   PDIMENSION winWidth = GetDimensions(PixelCoords).Width();
 184   PDIMENSION barWidth = splitBar.Width();
 185   if (where.X() + barWidth > winWidth)
 186     splitBar.SetX(winWidth - barWidth);
 187   else if (where.X() < 0)
 188     splitBar.SetX(0);
 189   else
 190     splitBar.SetX(where.X());
 191 }
 192
 193
 194 //////////////////////////////////////////////////////////////////////////////
 195 // PHorizontalSplitter
 196
 197 PHorizontalSplitter::PHorizontalSplitter(PInteractor * parent)
 198   : PSplitter(parent)
 199 {
 200   SetCursor(PCursor(PSTD_ID_CURSOR_UPDOWN));
 201   SetDimensions(parent->GetDimensions(PixelCoords), PixelCoords);
 202 }
 203
 204
 205 void PHorizontalSplitter::SetPercent(PDIMENSION percent)
 206 {
 207   PAssert(percent < 100, PInvalidParameter);
 208   PDim dim = GetDimensions(PixelCoords);
 209   splitBar.SetY(dim.Height()*percent/100);
 210   AdjustChildInteractors(dim.Width(), splitBar.Top(),
 211                          0, splitBar.Bottom(),
 212                          dim.Width(), dim.Height()-splitBar.Bottom());
 213 }
 214
 215
 216 void PHorizontalSplitter::_SetDimensions(PDIMENSION width, PDIMENSION height,
 217                                          CoordinateSystem coords)
 218 {
 219   PDim oldDim = GetDimensions(PixelCoords);
 220   PSplitter::_SetDimensions(width, height, coords);
 221   PDim newDim = GetDimensions(PixelCoords);
 222
 223   if (oldDim.Height() > 0)
 224     splitBar.SetY((PORDINATE)(splitBar.Y()*(long)newDim.Height()/oldDim.Height()));
 225   else
 226     splitBar.SetY((newDim.Height()-splitBar.Height())/2);
 227   splitBar.SetWidth(newDim.Width());
 228
 229   AdjustChildInteractors(splitBar.Width(), splitBar.Top(),
 230                          0, splitBar.Bottom(),
 231                          splitBar.Width(), newDim.Height()-splitBar.Bottom());
 232 }
 233
 234 void PHorizontalSplitter::TrackSplitter(const PPoint & where)
 235 {
 236   PDIMENSION winHeight = GetDimensions(PixelCoords).Height();
 237   PDIMENSION barHeight = splitBar.Height();
 238   if (where.Y() + barHeight > winHeight)
 239     splitBar.SetY(winHeight - barHeight);
 240   else if (where.Y() < 0)
 241     splitBar.SetY(0);
 242   else
 243     splitBar.SetY(where.Y());
 244 }
 245
 246
 247 #undef new
 248
 249
 250 // End Of File ///////////////////////////////////////////////////////////////