contrib/src/stc/scintilla/src/Indicator.cxx

   1 // Scintilla source code edit control
   2 /** @file Indicator.cxx
   3  ** Defines the style of indicators which are text decorations such as underlining.
   4  **/
   5 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #include "Platform.h"
   9
  10 #include "Scintilla.h"
  11 #include "Indicator.h"
  12
  13 void Indicator::Draw(Surface *surface, const PRectangle &rc, const PRectangle &rcLine) {
  14         surface->PenColour(fore.allocated);
  15         int ymid = (rc.bottom + rc.top) / 2;
  16         if (style == INDIC_SQUIGGLE) {
  17                 surface->MoveTo(rc.left, rc.top);
  18                 int x = rc.left + 2;
  19                 int y = 2;
  20                 while (x < rc.right) {
  21                         surface->LineTo(x, rc.top + y);
  22                         x += 2;
  23                         y = 2 - y;
  24                 }
  25                 surface->LineTo(rc.right, rc.top + y);  // Finish the line
  26         } else if (style == INDIC_TT) {
  27                 surface->MoveTo(rc.left, ymid);
  28                 int x = rc.left + 5;
  29                 while (x < rc.right) {
  30                         surface->LineTo(x, ymid);
  31                         surface->MoveTo(x-3, ymid);
  32                         surface->LineTo(x-3, ymid+2);
  33                         x++;
  34                         surface->MoveTo(x, ymid);
  35                         x += 5;
  36                 }
  37                 surface->LineTo(rc.right, ymid);        // Finish the line
  38                 if (x - 3 <= rc.right) {
  39                         surface->MoveTo(x-3, ymid);
  40                         surface->LineTo(x-3, ymid+2);
  41                 }
  42         } else if (style == INDIC_DIAGONAL) {
  43                 int x = rc.left;
  44                 while (x < rc.right) {
  45                         surface->MoveTo(x, rc.top+2);
  46                         int endX = x+3;
  47                         int endY = rc.top - 1;
  48                         if (endX > rc.right) {
  49                                 endY += endX - rc.right;
  50                                 endX = rc.right;
  51                         }
  52                         surface->LineTo(endX, endY);
  53                         x += 4;
  54                 }
  55         } else if (style == INDIC_STRIKE) {
  56                 surface->MoveTo(rc.left, rc.top - 4);
  57                 surface->LineTo(rc.right, rc.top - 4);
  58         } else if (style == INDIC_HIDDEN) {
  59                 // Draw nothing
  60         } else if (style == INDIC_BOX) {
  61                 surface->MoveTo(rc.left, ymid+1);
  62                 surface->LineTo(rc.right, ymid+1);
  63                 surface->LineTo(rc.right, rcLine.top+1);
  64                 surface->LineTo(rc.left, rcLine.top+1);
  65                 surface->LineTo(rc.left, ymid+1);
  66         } else {        // Either INDIC_PLAIN or unknown
  67                 surface->MoveTo(rc.left, ymid);
  68                 surface->LineTo(rc.right, ymid);
  69         }
  70 }
  71