src/stc/scintilla/src/LineMarker.cxx

   1 // Scintilla source code edit control
   2 // LineMarker.cxx - defines the look of a line marker in the margin
   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 "LineMarker.h"
  10
  11 void LineMarker::Draw(Surface *surface, PRectangle &rc) {
  12         int minDim = Platform::Minimum(rc.Width(), rc.Height());
  13         minDim--;       // Ensure does not go beyond edge
  14         int centreX = (rc.right + rc.left) / 2;
  15         int centreY = (rc.bottom + rc.top) / 2;
  16         int dimOn2 = minDim / 2;
  17         int dimOn4 = minDim / 4;
  18         if (rc.Width() > (rc.Height() * 2)) {
  19                 // Wide column is line number so move to left to try to avoid overlapping number
  20                 centreX = rc.left + dimOn2 + 1;
  21         }
  22         if (markType == SC_MARK_ROUNDRECT) {
  23                 PRectangle rcRounded = rc;
  24                 rcRounded.left = rc.left + 1;
  25                 rcRounded.right = rc.right - 1;
  26                 surface->RoundedRectangle(rcRounded, fore.allocated, back.allocated);
  27         } else if (markType == SC_MARK_CIRCLE) {
  28                 PRectangle rcCircle;
  29                 rcCircle.left = centreX - dimOn2;
  30                 rcCircle.top = centreY - dimOn2;
  31                 rcCircle.right = centreX + dimOn2;
  32                 rcCircle.bottom = centreY + dimOn2;
  33                 surface->Ellipse(rcCircle, fore.allocated, back.allocated);
  34         } else if (markType == SC_MARK_ARROW) {
  35                 Point pts[] = {
  36                 Point(centreX - dimOn4, centreY - dimOn2),
  37                 Point(centreX - dimOn4, centreY + dimOn2),
  38                 Point(centreX + dimOn2 - dimOn4, centreY),
  39                 };
  40                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  41                                 fore.allocated, back.allocated);
  42
  43         } else if (markType == SC_MARK_ARROWDOWN) {
  44                 Point pts[] = {
  45                 Point(centreX - dimOn2, centreY - dimOn4),
  46                 Point(centreX + dimOn2, centreY - dimOn4),
  47                 Point(centreX, centreY + dimOn2 - dimOn4),
  48                 };
  49                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  50                                 fore.allocated, back.allocated);
  51
  52         } else if (markType == SC_MARK_PLUS) {
  53                 int armSize = dimOn2-2;
  54                 Point pts[] = {
  55                 Point(centreX - armSize, centreY - 1),
  56                 Point(centreX - 1, centreY - 1),
  57                 Point(centreX - 1, centreY - armSize),
  58                 Point(centreX + 1, centreY - armSize),
  59                 Point(centreX + 1, centreY - 1),
  60                 Point(centreX + armSize, centreY -1),
  61                 Point(centreX + armSize, centreY +1),
  62                 Point(centreX + 1, centreY + 1),
  63                 Point(centreX + 1, centreY + armSize),
  64                 Point(centreX - 1, centreY + armSize),
  65                 Point(centreX - 1, centreY + 1),
  66                 Point(centreX - armSize, centreY + 1),
  67                 };
  68                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  69                                 fore.allocated, back.allocated);
  70
  71         } else if (markType == SC_MARK_MINUS) {
  72                 int armSize = dimOn2-2;
  73                 Point pts[] = {
  74                 Point(centreX - armSize, centreY - 1),
  75                 Point(centreX + armSize, centreY -1),
  76                 Point(centreX + armSize, centreY +1),
  77                 Point(centreX - armSize, centreY + 1),
  78                 };
  79                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  80                                 fore.allocated, back.allocated);
  81
  82         } else if (markType == SC_MARK_SMALLRECT) {
  83                 PRectangle rcSmall;
  84                 rcSmall.left = rc.left + 1;
  85                 rcSmall.top = rc.top + 2;
  86                 rcSmall.right = rc.right - 1;
  87                 rcSmall.bottom = rc.bottom - 2;
  88                 surface->RectangleDraw(rcSmall, fore.allocated, back.allocated);
  89         } else if (markType == SC_MARK_EMPTY) {
  90                 // An invisible marker so don't draw anything
  91         } else { // SC_MARK_SHORTARROW
  92                 Point pts[] = {
  93                         Point(centreX, centreY + dimOn2),
  94                         Point(centreX + dimOn2, centreY),
  95                         Point(centreX, centreY - dimOn2),
  96                         Point(centreX, centreY - dimOn4),
  97                         Point(centreX - dimOn4, centreY - dimOn4),
  98                         Point(centreX - dimOn4, centreY + dimOn4),
  99                         Point(centreX, centreY + dimOn4),
 100                         Point(centreX, centreY + dimOn2),
 101                 };
 102                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
 103                                 fore.allocated, back.allocated);
 104         }
 105 }