contrib/src/stc/scintilla/src/Accessor.cxx

   1 // SciTE - Scintilla based Text Editor
   2 // Accessor.cxx - rapid easy access to contents of a Scintilla
   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 <stdlib.h>
   7 #include <stdio.h>
   8
   9 #include "Platform.h"
  10
  11 #include "PropSet.h"
  12 #include "Accessor.h"
  13 #include "Scintilla.h"
  14
  15 void Accessor::Fill(int position) {
  16         if (lenDoc == -1)
  17                 lenDoc = Platform::SendScintilla(id, WM_GETTEXTLENGTH, 0, 0);
  18         startPos = position - slopSize;
  19         if (startPos + bufferSize > lenDoc)
  20                 startPos = lenDoc - bufferSize;
  21         if (startPos < 0)
  22                 startPos = 0;
  23         endPos = startPos + bufferSize;
  24         if (endPos > lenDoc)
  25                 endPos = lenDoc;
  26
  27         TEXTRANGE tr = {{startPos, endPos}, buf};
  28         Platform::SendScintilla(id, EM_GETTEXTRANGE, 0, reinterpret_cast<LPARAM>(&tr));
  29 }
  30
  31 char Accessor::StyleAt(int position) {
  32         return static_cast<char>(Platform::SendScintilla(
  33                 id, SCI_GETSTYLEAT, position, 0));
  34 }
  35
  36 int Accessor::GetLine(int position) {
  37         return Platform::SendScintilla(id, EM_LINEFROMCHAR, position, 0);
  38 }
  39
  40 int Accessor::LineStart(int line) {
  41         return Platform::SendScintilla(id, EM_LINEINDEX, line, 0);
  42 }
  43
  44 int Accessor::LevelAt(int line) {
  45         return Platform::SendScintilla(id, SCI_GETFOLDLEVEL, line, 0);
  46 }
  47
  48 int Accessor::Length() {
  49         if (lenDoc == -1)
  50                 lenDoc = Platform::SendScintilla(id, WM_GETTEXTLENGTH, 0, 0);
  51         return lenDoc;
  52 }
  53
  54 int Accessor::GetLineState(int line) {
  55         return Platform::SendScintilla(id, SCI_GETLINESTATE, line);
  56 }
  57
  58 int Accessor::SetLineState(int line, int state) {
  59         return Platform::SendScintilla(id, SCI_SETLINESTATE, line, state);
  60 }
  61
  62 void StylingContext::StartAt(unsigned int start, char chMask) {
  63         Platform::SendScintilla(id, SCI_STARTSTYLING, start, chMask);
  64 }
  65
  66 void StylingContext::ColourSegment(unsigned int start, unsigned int end, int chAttr) {
  67         // Only perform styling if non empty range
  68         if (end != start - 1) {
  69                 if (end < start) {
  70                         Platform::DebugPrintf("Bad colour positions %d - %d\n", start, end);
  71                 }
  72
  73                 if (validLen + (end - start + 1) >= bufferSize)
  74                         Flush();
  75                 if (validLen + (end - start + 1) >= bufferSize) {
  76                         // Too big for buffer so send directly
  77                         Platform::SendScintilla(id, SCI_SETSTYLING, end - start + 1, chAttr);
  78                 } else {
  79                         if (chAttr != chWhile)
  80                                 chFlags = 0;
  81                         chAttr |= chFlags;
  82                         for (unsigned int i = start; i <= end; i++) {
  83                                 styleBuf[validLen++] = chAttr;
  84                         }
  85                 }
  86         }
  87 }
  88
  89 void StylingContext::StartSegment(unsigned int pos) {
  90         startSeg = pos;
  91 }
  92
  93 void StylingContext::ColourTo(unsigned int pos, int chAttr) {
  94         ColourSegment(startSeg, pos, chAttr);
  95         startSeg = pos+1;
  96 }
  97
  98 int StylingContext::GetLine(int position) {
  99         return Platform::SendScintilla(id, EM_LINEFROMCHAR, position, 0);
 100 }
 101
 102 void StylingContext::SetLevel(int line, int level) {
 103         Platform::SendScintilla(id, SCI_SETFOLDLEVEL, line, level);
 104 }
 105
 106 void StylingContext::Flush() {
 107         if (validLen > 0) {
 108                 Platform::SendScintilla(id, SCI_SETSTYLINGEX, validLen,
 109                         reinterpret_cast<LPARAM>(styleBuf));
 110                 validLen = 0;
 111         }
 112 }