contrib/src/stc/scintilla/src/LineMarker.cxx

   1 // Scintilla source code edit control
   2 /** @file LineMarker.cxx
   3  ** Defines the look of a line marker in the margin .
   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 "LineMarker.h"
  12
  13 static void DrawBox(Surface *surface, int centreX, int centreY, int armSize, ColourAllocated fore, ColourAllocated back) {
  14         PRectangle rc;
  15         rc.left = centreX - armSize;
  16         rc.top = centreY - armSize;
  17         rc.right = centreX + armSize + 1;
  18         rc.bottom = centreY + armSize + 1;
  19         surface->RectangleDraw(rc, back, fore);
  20 }
  21
  22 static void DrawCircle(Surface *surface, int centreX, int centreY, int armSize, ColourAllocated fore, ColourAllocated back) {
  23         PRectangle rcCircle;
  24         rcCircle.left = centreX - armSize;
  25         rcCircle.top = centreY - armSize;
  26         rcCircle.right = centreX + armSize + 1;
  27         rcCircle.bottom = centreY + armSize + 1;
  28         surface->Ellipse(rcCircle, back, fore);
  29 }
  30
  31 static void DrawPlus(Surface *surface, int centreX, int centreY, int armSize, ColourAllocated fore) {
  32         PRectangle rcV(centreX, centreY - armSize + 2, centreX + 1, centreY + armSize - 2 + 1);
  33         surface->FillRectangle(rcV, fore);
  34         PRectangle rcH(centreX - armSize + 2, centreY, centreX + armSize - 2 + 1, centreY+1);
  35         surface->FillRectangle(rcH, fore);
  36 }
  37
  38 static void DrawMinus(Surface *surface, int centreX, int centreY, int armSize, ColourAllocated fore) {
  39         PRectangle rcH(centreX - armSize + 2, centreY, centreX + armSize - 2 + 1, centreY+1);
  40         surface->FillRectangle(rcH, fore);
  41 }
  42
  43 void LineMarker::Draw(Surface *surface, PRectangle &rcWhole, Font &fontForCharacter) {
  44         // Restrict most shapes a bit
  45         PRectangle rc = rcWhole;
  46         rc.top++;
  47         rc.bottom--;
  48         int minDim = Platform::Minimum(rc.Width(), rc.Height());
  49         minDim--;       // Ensure does not go beyond edge
  50         int centreX = (rc.right + rc.left) / 2;
  51         int centreY = (rc.bottom + rc.top) / 2;
  52         int dimOn2 = minDim / 2;
  53         int dimOn4 = minDim / 4;
  54         int blobSize = dimOn2-1;
  55         int armSize = dimOn2-2;
  56         if (rc.Width() > (rc.Height() * 2)) {
  57                 // Wide column is line number so move to left to try to avoid overlapping number
  58                 centreX = rc.left + dimOn2 + 1;
  59         }
  60         if (markType == SC_MARK_ROUNDRECT) {
  61                 PRectangle rcRounded = rc;
  62                 rcRounded.left = rc.left + 1;
  63                 rcRounded.right = rc.right - 1;
  64                 surface->RoundedRectangle(rcRounded, fore.allocated, back.allocated);
  65         } else if (markType == SC_MARK_CIRCLE) {
  66                 PRectangle rcCircle;
  67                 rcCircle.left = centreX - dimOn2;
  68                 rcCircle.top = centreY - dimOn2;
  69                 rcCircle.right = centreX + dimOn2;
  70                 rcCircle.bottom = centreY + dimOn2;
  71                 surface->Ellipse(rcCircle, fore.allocated, back.allocated);
  72         } else if (markType == SC_MARK_ARROW) {
  73                 Point pts[] = {
  74                 Point(centreX - dimOn4, centreY - dimOn2),
  75                 Point(centreX - dimOn4, centreY + dimOn2),
  76                 Point(centreX + dimOn2 - dimOn4, centreY),
  77                 };
  78                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  79                                 fore.allocated, back.allocated);
  80
  81         } else if (markType == SC_MARK_ARROWDOWN) {
  82                 Point pts[] = {
  83                 Point(centreX - dimOn2, centreY - dimOn4),
  84                 Point(centreX + dimOn2, centreY - dimOn4),
  85                 Point(centreX, centreY + dimOn2 - dimOn4),
  86                 };
  87                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
  88                                 fore.allocated, back.allocated);
  89
  90         } else if (markType == SC_MARK_PLUS) {
  91                 Point pts[] = {
  92                 Point(centreX - armSize, centreY - 1),
  93                 Point(centreX - 1, centreY - 1),
  94                 Point(centreX - 1, centreY - armSize),
  95                 Point(centreX + 1, centreY - armSize),
  96                 Point(centreX + 1, centreY - 1),
  97                 Point(centreX + armSize, centreY -1),
  98                 Point(centreX + armSize, centreY +1),
  99                 Point(centreX + 1, centreY + 1),
 100                 Point(centreX + 1, centreY + armSize),
 101                 Point(centreX - 1, centreY + armSize),
 102                 Point(centreX - 1, centreY + 1),
 103                 Point(centreX - armSize, centreY + 1),
 104                 };
 105                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
 106                                 fore.allocated, back.allocated);
 107
 108         } else if (markType == SC_MARK_MINUS) {
 109                 Point pts[] = {
 110                 Point(centreX - armSize, centreY - 1),
 111                 Point(centreX + armSize, centreY -1),
 112                 Point(centreX + armSize, centreY +1),
 113                 Point(centreX - armSize, centreY + 1),
 114                 };
 115                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
 116                                 fore.allocated, back.allocated);
 117
 118         } else if (markType == SC_MARK_SMALLRECT) {
 119                 PRectangle rcSmall;
 120                 rcSmall.left = rc.left + 1;
 121                 rcSmall.top = rc.top + 2;
 122                 rcSmall.right = rc.right - 1;
 123                 rcSmall.bottom = rc.bottom - 2;
 124                 surface->RectangleDraw(rcSmall, fore.allocated, back.allocated);
 125
 126         } else if (markType == SC_MARK_EMPTY || markType == SC_MARK_BACKGROUND) {
 127                 // An invisible marker so don't draw anything
 128
 129         } else if (markType == SC_MARK_VLINE) {
 130                 surface->PenColour(back.allocated);
 131                 surface->MoveTo(centreX, rcWhole.top);
 132                 surface->LineTo(centreX, rcWhole.bottom);
 133
 134         } else if (markType == SC_MARK_LCORNER) {
 135                 surface->PenColour(back.allocated);
 136                 surface->MoveTo(centreX, rcWhole.top);
 137                 surface->LineTo(centreX, rc.top + dimOn2);
 138                 surface->LineTo(rc.right - 2, rc.top + dimOn2);
 139
 140         } else if (markType == SC_MARK_TCORNER) {
 141                 surface->PenColour(back.allocated);
 142                 surface->MoveTo(centreX, rcWhole.top);
 143                 surface->LineTo(centreX, rcWhole.bottom);
 144                 surface->MoveTo(centreX, rc.top + dimOn2);
 145                 surface->LineTo(rc.right - 2, rc.top + dimOn2);
 146
 147         } else if (markType == SC_MARK_LCORNERCURVE) {
 148                 surface->PenColour(back.allocated);
 149                 surface->MoveTo(centreX, rcWhole.top);
 150                 surface->LineTo(centreX, rc.top + dimOn2-3);
 151                 surface->LineTo(centreX+3, rc.top + dimOn2);
 152                 surface->LineTo(rc.right - 1, rc.top + dimOn2);
 153
 154         } else if (markType == SC_MARK_TCORNERCURVE) {
 155                 surface->PenColour(back.allocated);
 156                 surface->MoveTo(centreX, rcWhole.top);
 157                 surface->LineTo(centreX, rcWhole.bottom);
 158
 159                 surface->MoveTo(centreX, rc.top + dimOn2-3);
 160                 surface->LineTo(centreX+3, rc.top + dimOn2);
 161                 surface->LineTo(rc.right - 1, rc.top + dimOn2);
 162
 163         } else if (markType == SC_MARK_BOXPLUS) {
 164                 surface->PenColour(back.allocated);
 165                 DrawBox(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 166                 DrawPlus(surface, centreX, centreY, blobSize, back.allocated);
 167
 168         } else if (markType == SC_MARK_BOXPLUSCONNECTED) {
 169                 surface->PenColour(back.allocated);
 170                 DrawBox(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 171                 DrawPlus(surface, centreX, centreY, blobSize, back.allocated);
 172
 173                 surface->MoveTo(centreX, centreY + blobSize);
 174                 surface->LineTo(centreX, rcWhole.bottom);
 175
 176                 surface->MoveTo(centreX, rcWhole.top);
 177                 surface->LineTo(centreX, centreY - blobSize);
 178
 179         } else if (markType == SC_MARK_BOXMINUS) {
 180                 surface->PenColour(back.allocated);
 181                 DrawBox(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 182                 DrawMinus(surface, centreX, centreY, blobSize, back.allocated);
 183
 184                 surface->MoveTo(centreX, centreY + blobSize);
 185                 surface->LineTo(centreX, rcWhole.bottom);
 186
 187         } else if (markType == SC_MARK_BOXMINUSCONNECTED) {
 188                 surface->PenColour(back.allocated);
 189                 DrawBox(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 190                 DrawMinus(surface, centreX, centreY, blobSize, back.allocated);
 191
 192                 surface->MoveTo(centreX, centreY + blobSize);
 193                 surface->LineTo(centreX, rcWhole.bottom);
 194
 195                 surface->MoveTo(centreX, rcWhole.top);
 196                 surface->LineTo(centreX, centreY - blobSize);
 197
 198         } else if (markType == SC_MARK_CIRCLEPLUS) {
 199                 DrawCircle(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 200                 surface->PenColour(back.allocated);
 201                 DrawPlus(surface, centreX, centreY, blobSize, back.allocated);
 202
 203         } else if (markType == SC_MARK_CIRCLEPLUSCONNECTED) {
 204                 DrawCircle(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 205                 surface->PenColour(back.allocated);
 206                 DrawPlus(surface, centreX, centreY, blobSize, back.allocated);
 207
 208                 surface->MoveTo(centreX, centreY + blobSize);
 209                 surface->LineTo(centreX, rcWhole.bottom);
 210
 211                 surface->MoveTo(centreX, rcWhole.top);
 212                 surface->LineTo(centreX, centreY - blobSize);
 213
 214         } else if (markType == SC_MARK_CIRCLEMINUS) {
 215                 DrawCircle(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 216                 surface->PenColour(back.allocated);
 217                 DrawMinus(surface, centreX, centreY, blobSize, back.allocated);
 218
 219                 surface->MoveTo(centreX, centreY + blobSize);
 220                 surface->LineTo(centreX, rcWhole.bottom);
 221
 222         } else if (markType == SC_MARK_CIRCLEMINUSCONNECTED) {
 223                 DrawCircle(surface, centreX, centreY, blobSize, fore.allocated, back.allocated);
 224                 surface->PenColour(back.allocated);
 225                 DrawMinus(surface, centreX, centreY, blobSize, back.allocated);
 226
 227                 surface->MoveTo(centreX, centreY + blobSize);
 228                 surface->LineTo(centreX, rcWhole.bottom);
 229
 230                 surface->MoveTo(centreX, rcWhole.top);
 231                 surface->LineTo(centreX, centreY - blobSize);
 232
 233         } else if (markType >= SC_MARK_CHARACTER) {
 234                 char character[1];
 235                 character[0] = static_cast<char>(markType - SC_MARK_CHARACTER);
 236                 int width = surface->WidthText(fontForCharacter, character, 1);
 237                 rc.left += (rc.Width() - width) / 2;
 238                 rc.right = rc.left + width;
 239                 surface->DrawTextClipped(rc, fontForCharacter, rc.bottom - 2,
 240                         character, 1, fore.allocated, back.allocated);
 241
 242         } else { // SC_MARK_SHORTARROW
 243                 Point pts[] = {
 244                         Point(centreX, centreY + dimOn2),
 245                         Point(centreX + dimOn2, centreY),
 246                         Point(centreX, centreY - dimOn2),
 247                         Point(centreX, centreY - dimOn4),
 248                         Point(centreX - dimOn4, centreY - dimOn4),
 249                         Point(centreX - dimOn4, centreY + dimOn4),
 250                         Point(centreX, centreY + dimOn4),
 251                         Point(centreX, centreY + dimOn2),
 252                 };
 253                 surface->Polygon(pts, sizeof(pts) / sizeof(pts[0]),
 254                                 fore.allocated, back.allocated);
 255         }
 256 }