src/stc/scintilla/src/ViewStyle.cxx

   1 // Scintilla source code edit control
   2 /** @file ViewStyle.cxx
   3  ** Store information on how the document is to be viewed.
   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 <string.h>
   9
  10 #include "Platform.h"
  11
  12 #include "Scintilla.h"
  13 #include "Indicator.h"
  14 #include "LineMarker.h"
  15 #include "Style.h"
  16 #include "ViewStyle.h"
  17
  18 MarginStyle::MarginStyle() :
  19         symbol(false), width(16), mask(0xffffffff), sensitive(false) {
  20 }
  21
  22 // A list of the fontnames - avoids wasting space in each style
  23 FontNames::FontNames() {
  24         max = 0;
  25 }
  26
  27 FontNames::~FontNames() {
  28         Clear();
  29 }
  30
  31 void FontNames::Clear() {
  32         for (int i=0;i<max;i++) {
  33                 delete []names[i];
  34         }
  35         max = 0;
  36 }
  37
  38 const char *FontNames::Save(const char *name) {
  39         if (!name)
  40                 return 0;
  41         for (int i=0;i<max;i++) {
  42                 if (strcmp(names[i], name) == 0) {
  43                         return names[i];
  44                 }
  45         }
  46         names[max] = new char[strlen(name) + 1];
  47         strcpy(names[max], name);
  48         max++;
  49         return names[max-1];
  50 }
  51
  52 ViewStyle::ViewStyle() {
  53         Init();
  54 }
  55
  56 ViewStyle::ViewStyle(const ViewStyle &source) {
  57         Init();
  58         for (unsigned int sty=0;sty<(sizeof(styles)/sizeof(styles[0]));sty++) {
  59                 styles[sty] = source.styles[sty];
  60                 // Can't just copy fontname as its lifetime is relative to its owning ViewStyle
  61                 styles[sty].fontName = fontNames.Save(source.styles[sty].fontName);
  62         }
  63         for (int mrk=0;mrk<=MARKER_MAX;mrk++) {
  64                 markers[mrk] = source.markers[mrk];
  65         }
  66         for (int ind=0;ind<=INDIC_MAX;ind++) {
  67                 indicators[ind] = source.indicators[ind];
  68         }
  69
  70         selforeset = source.selforeset;
  71         selforeground.desired = source.selforeground.desired;
  72         selbackset = source.selbackset;
  73         selbackground.desired = source.selbackground.desired;
  74         selbackground2.desired = source.selbackground2.desired;
  75         selbar.desired = source.selbar.desired;
  76         selbarlight.desired = source.selbarlight.desired;
  77         caretcolour.desired = source.caretcolour.desired;
  78         showCaretLineBackground = source.showCaretLineBackground;
  79         caretLineBackground.desired = source.caretLineBackground.desired;
  80         edgecolour.desired = source.edgecolour.desired;
  81         edgeState = source.edgeState;
  82         caretWidth = source.caretWidth;
  83         leftMarginWidth = source.leftMarginWidth;
  84         rightMarginWidth = source.rightMarginWidth;
  85         for (int i=0;i < margins; i++) {
  86                 ms[i] = source.ms[i];
  87         }
  88         symbolMargin = source.symbolMargin;
  89         maskInLine = source.maskInLine;
  90         fixedColumnWidth = source.fixedColumnWidth;
  91         zoomLevel = source.zoomLevel;
  92         viewWhitespace = source.viewWhitespace;
  93         viewIndentationGuides = source.viewIndentationGuides;
  94         viewEOL = source.viewEOL;
  95         showMarkedLines = source.showMarkedLines;
  96 }
  97
  98 ViewStyle::~ViewStyle() {
  99 }
 100
 101 void ViewStyle::Init() {
 102         fontNames.Clear();
 103         ResetDefaultStyle();
 104
 105         indicators[0].style = INDIC_SQUIGGLE;
 106         indicators[0].fore = Colour(0, 0x7f, 0);
 107         indicators[1].style = INDIC_TT;
 108         indicators[1].fore = Colour(0, 0, 0xff);
 109         indicators[2].style = INDIC_PLAIN;
 110         indicators[2].fore = Colour(0xff, 0, 0);
 111
 112         lineHeight = 1;
 113         maxAscent = 1;
 114         maxDescent = 1;
 115         aveCharWidth = 8;
 116         spaceWidth = 8;
 117
 118         selforeset = false;
 119         selforeground.desired = Colour(0xff, 0, 0);
 120         selbackset = true;
 121         selbackground.desired = Colour(0xc0, 0xc0, 0xc0);
 122         selbackground2.desired = Colour(0xb0, 0xb0, 0xb0);
 123         selbar.desired = Platform::Chrome();
 124         selbarlight.desired = Platform::ChromeHighlight();
 125         styles[STYLE_LINENUMBER].fore.desired = Colour(0, 0, 0);
 126         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 127         caretcolour.desired = Colour(0, 0, 0);
 128         showCaretLineBackground = false;
 129         caretLineBackground.desired = Colour(0xff, 0xff, 0);
 130         edgecolour.desired = Colour(0xc0, 0xc0, 0xc0);
 131         edgeState = EDGE_NONE;
 132         caretWidth = 1;
 133
 134         leftMarginWidth = 1;
 135         rightMarginWidth = 1;
 136         ms[0].symbol = false;
 137         ms[0].width = 0;
 138         ms[0].mask = 0;
 139         ms[1].symbol = true;
 140         ms[1].width = 16;
 141         ms[1].mask = ~SC_MASK_FOLDERS;
 142         ms[2].symbol = true;
 143         ms[2].width = 14;       // Nice width for arrows
 144         ms[2].mask = SC_MASK_FOLDERS;
 145         ms[2].width = 0;        // Nice width for arrows
 146         ms[2].mask = 0;
 147         fixedColumnWidth = leftMarginWidth;
 148         symbolMargin = false;
 149         maskInLine = 0xffffffff;
 150         for (int margin=0; margin < margins; margin++) {
 151                 fixedColumnWidth += ms[margin].width;
 152                 symbolMargin = symbolMargin || ms[margin].symbol;
 153                 if (ms[margin].width > 0)
 154                         maskInLine &= ~ms[margin].mask;
 155         }
 156         zoomLevel = 0;
 157         viewWhitespace = wsInvisible;
 158         viewIndentationGuides = false;
 159         viewEOL = false;
 160         showMarkedLines = true;
 161 }
 162
 163 void ViewStyle::RefreshColourPalette(Palette &pal, bool want) {
 164         unsigned int i;
 165         for (i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 166                 pal.WantFind(styles[i].fore, want);
 167                 pal.WantFind(styles[i].back, want);
 168         }
 169         for (i=0;i<(sizeof(indicators)/sizeof(indicators[0]));i++) {
 170                 pal.WantFind(indicators[i].fore, want);
 171         }
 172         for (i=0;i<(sizeof(markers)/sizeof(markers[0]));i++) {
 173                 pal.WantFind(markers[i].fore, want);
 174                 pal.WantFind(markers[i].back, want);
 175         }
 176         pal.WantFind(selforeground, want);
 177         pal.WantFind(selbackground, want);
 178         pal.WantFind(selbackground2, want);
 179         pal.WantFind(selbar, want);
 180         pal.WantFind(selbarlight, want);
 181         pal.WantFind(caretcolour, want);
 182         pal.WantFind(caretLineBackground, want);
 183         pal.WantFind(edgecolour, want);
 184 }
 185
 186 void ViewStyle::Refresh(Surface &surface) {
 187         selbar.desired = Platform::Chrome();
 188         selbarlight.desired = Platform::ChromeHighlight();
 189         styles[STYLE_DEFAULT].Realise(surface, zoomLevel);
 190         maxAscent = styles[STYLE_DEFAULT].ascent;
 191         maxDescent = styles[STYLE_DEFAULT].descent;
 192         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 193                 if (i != STYLE_DEFAULT) {
 194                         styles[i].Realise(surface, zoomLevel, &styles[STYLE_DEFAULT]);
 195                         if (maxAscent < styles[i].ascent)
 196                                 maxAscent = styles[i].ascent;
 197                         if (maxDescent < styles[i].descent)
 198                                 maxDescent = styles[i].descent;
 199                 }
 200         }
 201
 202         lineHeight = maxAscent + maxDescent;
 203         aveCharWidth = styles[STYLE_DEFAULT].aveCharWidth;
 204         spaceWidth = styles[STYLE_DEFAULT].spaceWidth;
 205
 206         fixedColumnWidth = leftMarginWidth;
 207         symbolMargin = false;
 208         maskInLine = 0xffffffff;
 209         for (int margin=0; margin < margins; margin++) {
 210                 fixedColumnWidth += ms[margin].width;
 211                 symbolMargin = symbolMargin || ms[margin].symbol;
 212                 if (ms[margin].width > 0)
 213                         maskInLine &= ~ms[margin].mask;
 214         }
 215 }
 216
 217 void ViewStyle::ResetDefaultStyle() {
 218         styles[STYLE_DEFAULT].Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
 219                 Platform::DefaultFontSize(), fontNames.Save(Platform::DefaultFont()),
 220                 SC_CHARSET_DEFAULT,
 221                 false, false, false, false, Style::caseMixed, true);
 222 }
 223
 224 void ViewStyle::ClearStyles() {
 225         // Reset all styles to be like the default style
 226         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 227                 if (i != STYLE_DEFAULT) {
 228                         styles[i].ClearTo(styles[STYLE_DEFAULT]);
 229                 }
 230         }
 231         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 232 }
 233
 234 void ViewStyle::SetStyleFontName(int styleIndex, const char *name) {
 235         styles[styleIndex].fontName = fontNames.Save(name);
 236 }