Shamusworld >> Repos - ttedit/blob - src/charwindow.cpp

   1 //
   2 // TTEDIT.CPP - The TrueType Editor
   3 // by James L. Hammons
   4 // (C) 2004 Underground Software
   5 //
   6 // JLH = James L. Hammons <jlhamm@acm.org>
   7 //
   8 // Who  When        What
   9 // ---  ----------  -------------------------------------------------------------
  10 // JLH  08/28/2008  Created this file
  11 // JLH  03/19/2009  Converted from wxWidgets to Qt
  12 // JLH  03/21/2009  Fixed main screen points rendering
  13 //
  14
  15 // FIXED:
  16 //
  17 // - Render of main window points [DONE]
  18 //
  19 // STILL TO BE DONE:
  20 //
  21 // - Fix "window disappears when tool win comes up" problem
  22 //
  23
  24 #include "charwindow.h"
  25 #include "debug.h"
  26
  27 CharWindow::CharWindow(QWidget * parent/*= NULL*/): QWidget(parent, Qt::Tool), path(NULL)
  28 {
  29         setWindowTitle("Character: Unknown");
  30 }
  31
  32 void CharWindow::MakePathFromPoints(GlyphPoints * gp)
  33 {
  34         if (gp == NULL)
  35                 return;
  36
  37         if (path != NULL)
  38                 delete path;
  39
  40         path = new QPainterPath();
  41 //      path->setFillRule(Qt::OddEvenFill);
  42         path->setFillRule(Qt::WindingFill);
  43
  44         // Draw curve formed by points
  45
  46         for(int poly=0; poly<gp->GetNumPolys(); poly++)
  47         {
  48                 if (gp->GetNumPoints(poly) > 2)
  49                 {
  50                         // Initial move...
  51                         // If last point is on curve then move to it, otherwise move to first point...
  52
  53                         int x, y;
  54
  55                         if (gp->GetOnCurve(poly, gp->GetPrev(poly, 0)))
  56                                 x = gp->GetX(poly, gp->GetPrev(poly, 0)),
  57                                 y = gp->GetY(poly, gp->GetPrev(poly, 0));
  58                         else
  59                         {
  60                                 x = (int)gp->GetX(poly, 0), y = (int)gp->GetY(poly, 0);
  61
  62                                 if (!gp->GetOnCurve(poly, 0))
  63                                 {
  64                                         IPoint pt = gp->GetMidpointToPrev(poly, 0);
  65                                         x = pt.x, y = pt.y;
  66                                 }
  67                         }
  68
  69                         path->moveTo(x, y);
  70
  71                         for(int i=0; i<gp->GetNumPoints(poly); i++)
  72                         {
  73                                 if (gp->GetOnCurve(poly, i))
  74                                 {
  75 //                                      p.drawLine(x, y, gp->GetX(poly, i), gp->GetY(poly, i));
  76                                         x = (int)gp->GetX(poly, i), y = (int)gp->GetY(poly, i);
  77                                         path->lineTo(x, y);
  78                                 }
  79                                 else
  80                                 {
  81                                         IPoint pt = (gp->GetOnCurve(poly, gp->GetNext(poly, i)) ? gp->GetNextPoint(poly, i) : gp->GetMidpointToNext(poly, i));
  82
  83                                         path->quadTo(gp->GetX(poly, i), gp->GetY(poly, i), pt.x, pt.y);
  84                                         x = pt.x, y = pt.y;
  85
  86                                         // If following point is on curve, move past it
  87                                         if (gp->GetOnCurve(poly, gp->GetNext(poly, i)))
  88                                                 i++;
  89                                 }
  90                         }
  91
  92                         path->closeSubpath();
  93                 }
  94         }
  95 }
  96
  97 QSize CharWindow::minimumSizeHint() const
  98 {
  99         return QSize(50, 50);
 100 }
 101
 102 QSize CharWindow::sizeHint() const
 103 {
 104         return QSize(200, 200);
 105 }
 106
 107 void CharWindow::paintEvent(QPaintEvent * /*event*/)
 108 {
 109         if (path == NULL)
 110                 return;
 111
 112         QPainter p(this);
 113
 114         p.setBrush(QColor(122, 163, 39));
 115 // Need to translate as well...
 116 //      p.scale(2.0, 2.0);
 117
 118 /*
 119 1.0 -> 3.0, height = 400
 120 r.h / ps.h = 2/400 <-- do it the other way!
 121
 122 height works, width does not
 123
 124 2-step process:
 125 compare aspect ratios
 126
 127 ps.w - ((r.h / ps.h) * ps.w)
 128
 129 0.5 -> where in the 400? -> 100
 130 0.5/r.h(2.0) = 0.25 * ps.h(400) = 100
 131 conv.fac. -> (ps.h / r.h)
 132 */
 133         QRectF rect = path->boundingRect();
 134         QSize paintSize = size();
 135
 136         p.translate(0, paintSize.height());
 137 float extraX = 0.0f, extraY = 0.0f;
 138 float xConvFac = (float)paintSize.width() / rect.width();
 139 float yConvFac = (float)paintSize.height() / rect.height();
 140
 141 //      if (((float)paintSize.width() / rect.width()) > ((float)paintSize.height() / rect.height()))
 142         if (xConvFac > yConvFac)
 143         {
 144                 // height is limiting factor
 145                 p.scale(yConvFac, -yConvFac);
 146 //extraX = (rect.height() / (float)paintSize.height()) * (float)paintSize.width();
 147 //extraX = (extraX - rect.width()) / 2.0f;
 148                 extraX = (((float)paintSize.width() / yConvFac) - rect.width()) / 2.0f;
 149         }
 150         else
 151         {
 152                 // width is limiting factor
 153 //              p.scale((float)paintSize.width() / rect.width(), -(float)paintSize.width() / rect.height());
 154                 p.scale((float)paintSize.width() / rect.width(), -(float)paintSize.width() / rect.width());
 155 extraY = (rect.width() / (float)paintSize.width()) * (float)paintSize.height();// / 2.0f;
 156 extraY = extraY - rect.height();
 157 extraY /= 2.0f;
 158         }
 159
 160         p.translate(-rect.x() + extraX, -rect.y() + extraY);
 161
 162         p.drawPath(*path);
 163 }