src/stc/scintilla/src/Indicator.cxx

   1 // Scintilla source code edit control
   2 // Indicator.cxx - defines the style of indicators which are text decorations such as underlining
   3 // Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
   4 // The License.txt file describes the conditions under which this software may be distributed.
   5
   6 #include "Platform.h"
   7
   8 #include "Scintilla.h"
   9 #include "Indicator.h"
  10
  11 void Indicator::Draw(Surface *surface, PRectangle &rc) {
  12         surface->PenColour(fore.allocated);
  13         int ymid = (rc.bottom + rc.top) / 2;
  14         if (style == INDIC_SQUIGGLE) {
  15                 surface->MoveTo(rc.left, rc.top);
  16                 int x = rc.left + 2;
  17                 int y = 2;
  18                 while (x < rc.right) {
  19                         surface->LineTo(x, rc.top + y);
  20                         x += 2;
  21                         y = 2 - y;
  22                 }
  23                 surface->LineTo(rc.right, rc.top + y);  // Finish the line
  24         } else if (style == INDIC_TT) {
  25                 surface->MoveTo(rc.left, ymid);
  26                 int x = rc.left + 5;
  27                 while (x < rc.right) {
  28                         surface->LineTo(x, ymid);
  29                         surface->MoveTo(x-3, ymid);
  30                         surface->LineTo(x-3, ymid+2);
  31                         x++;
  32                         surface->MoveTo(x, ymid);
  33                         x += 5;
  34                 }
  35                 surface->LineTo(rc.right, ymid);        // Finish the line
  36                 if (x - 3 <= rc.right) {
  37                         surface->MoveTo(x-3, ymid);
  38                         surface->LineTo(x-3, ymid+2);
  39                 }
  40         } else if (style == INDIC_DIAGONAL) {
  41                 int x = rc.left;
  42                 while (x < rc.right) {
  43                         surface->MoveTo(x, rc.top+2);
  44                         int endX = x+3;
  45                         int endY = rc.top - 1;
  46                         if (endX > rc.right) {
  47                                 endY += endX - rc.right;
  48                                 endX = rc.right;
  49                         }
  50                         surface->LineTo(endX, endY);
  51                         x += 4;
  52                 }
  53         } else if (style == INDIC_STRIKE) {
  54                 surface->MoveTo(rc.left, rc.top - 4);
  55                 surface->LineTo(rc.right, rc.top - 4);
  56         } else {        // Either INDIC_PLAIN or unknown
  57                 surface->MoveTo(rc.left, ymid);
  58                 surface->LineTo(rc.right, ymid);
  59         }
  60 }
  61