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         whitespaceForegroundSet = source.whitespaceForegroundSet;
  76         whitespaceForeground.desired = source.whitespaceForeground.desired;
  77         whitespaceBackgroundSet = source.whitespaceBackgroundSet;
  78         whitespaceBackground.desired = source.whitespaceBackground.desired;
  79         selbar.desired = source.selbar.desired;
  80         selbarlight.desired = source.selbarlight.desired;
  81         caretcolour.desired = source.caretcolour.desired;
  82         showCaretLineBackground = source.showCaretLineBackground;
  83         caretLineBackground.desired = source.caretLineBackground.desired;
  84         edgecolour.desired = source.edgecolour.desired;
  85         edgeState = source.edgeState;
  86         caretWidth = source.caretWidth;
  87         leftMarginWidth = source.leftMarginWidth;
  88         rightMarginWidth = source.rightMarginWidth;
  89         for (int i=0;i < margins; i++) {
  90                 ms[i] = source.ms[i];
  91         }
  92         symbolMargin = source.symbolMargin;
  93         maskInLine = source.maskInLine;
  94         fixedColumnWidth = source.fixedColumnWidth;
  95         zoomLevel = source.zoomLevel;
  96         viewWhitespace = source.viewWhitespace;
  97         viewIndentationGuides = source.viewIndentationGuides;
  98         viewEOL = source.viewEOL;
  99         showMarkedLines = source.showMarkedLines;
 100 }
 101
 102 ViewStyle::~ViewStyle() {
 103 }
 104
 105 void ViewStyle::Init() {
 106         fontNames.Clear();
 107         ResetDefaultStyle();
 108
 109         indicators[0].style = INDIC_SQUIGGLE;
 110         indicators[0].fore = ColourDesired(0, 0x7f, 0);
 111         indicators[1].style = INDIC_TT;
 112         indicators[1].fore = ColourDesired(0, 0, 0xff);
 113         indicators[2].style = INDIC_PLAIN;
 114         indicators[2].fore = ColourDesired(0xff, 0, 0);
 115
 116         lineHeight = 1;
 117         maxAscent = 1;
 118         maxDescent = 1;
 119         aveCharWidth = 8;
 120         spaceWidth = 8;
 121
 122         selforeset = false;
 123         selforeground.desired = ColourDesired(0xff, 0, 0);
 124         selbackset = true;
 125         selbackground.desired = ColourDesired(0xc0, 0xc0, 0xc0);
 126         selbackground2.desired = ColourDesired(0xb0, 0xb0, 0xb0);
 127         whitespaceForegroundSet = false;
 128         whitespaceForeground.desired = ColourDesired(0, 0, 0);
 129         whitespaceBackgroundSet = false;
 130         whitespaceBackground.desired = ColourDesired(0xff, 0xff, 0xff);
 131         selbar.desired = Platform::Chrome();
 132         selbarlight.desired = Platform::ChromeHighlight();
 133         styles[STYLE_LINENUMBER].fore.desired = ColourDesired(0, 0, 0);
 134         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 135         caretcolour.desired = ColourDesired(0, 0, 0);
 136         showCaretLineBackground = false;
 137         caretLineBackground.desired = ColourDesired(0xff, 0xff, 0);
 138         edgecolour.desired = ColourDesired(0xc0, 0xc0, 0xc0);
 139         edgeState = EDGE_NONE;
 140         caretWidth = 1;
 141
 142         leftMarginWidth = 1;
 143         rightMarginWidth = 1;
 144         ms[0].symbol = false;
 145         ms[0].width = 0;
 146         ms[0].mask = 0;
 147         ms[1].symbol = true;
 148         ms[1].width = 16;
 149         ms[1].mask = ~SC_MASK_FOLDERS;
 150         ms[2].symbol = true;
 151         ms[2].width = 14;       // Nice width for arrows
 152         ms[2].mask = SC_MASK_FOLDERS;
 153         ms[2].width = 0;        // Nice width for arrows
 154         ms[2].mask = 0;
 155         fixedColumnWidth = leftMarginWidth;
 156         symbolMargin = false;
 157         maskInLine = 0xffffffff;
 158         for (int margin=0; margin < margins; margin++) {
 159                 fixedColumnWidth += ms[margin].width;
 160                 symbolMargin = symbolMargin || ms[margin].symbol;
 161                 if (ms[margin].width > 0)
 162                         maskInLine &= ~ms[margin].mask;
 163         }
 164         zoomLevel = 0;
 165         viewWhitespace = wsInvisible;
 166         viewIndentationGuides = false;
 167         viewEOL = false;
 168         showMarkedLines = true;
 169 }
 170
 171 void ViewStyle::RefreshColourPalette(Palette &pal, bool want) {
 172         unsigned int i;
 173         for (i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 174                 pal.WantFind(styles[i].fore, want);
 175                 pal.WantFind(styles[i].back, want);
 176         }
 177         for (i=0;i<(sizeof(indicators)/sizeof(indicators[0]));i++) {
 178                 pal.WantFind(indicators[i].fore, want);
 179         }
 180         for (i=0;i<(sizeof(markers)/sizeof(markers[0]));i++) {
 181                 pal.WantFind(markers[i].fore, want);
 182                 pal.WantFind(markers[i].back, want);
 183         }
 184         pal.WantFind(selforeground, want);
 185         pal.WantFind(selbackground, want);
 186         pal.WantFind(selbackground2, want);
 187         pal.WantFind(whitespaceForeground, want);
 188         pal.WantFind(whitespaceBackground, want);
 189         pal.WantFind(selbar, want);
 190         pal.WantFind(selbarlight, want);
 191         pal.WantFind(caretcolour, want);
 192         pal.WantFind(caretLineBackground, want);
 193         pal.WantFind(edgecolour, want);
 194 }
 195
 196 void ViewStyle::Refresh(Surface &surface) {
 197         selbar.desired = Platform::Chrome();
 198         selbarlight.desired = Platform::ChromeHighlight();
 199         styles[STYLE_DEFAULT].Realise(surface, zoomLevel);
 200         maxAscent = styles[STYLE_DEFAULT].ascent;
 201         maxDescent = styles[STYLE_DEFAULT].descent;
 202         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 203                 if (i != STYLE_DEFAULT) {
 204                         styles[i].Realise(surface, zoomLevel, &styles[STYLE_DEFAULT]);
 205                         if (maxAscent < styles[i].ascent)
 206                                 maxAscent = styles[i].ascent;
 207                         if (maxDescent < styles[i].descent)
 208                                 maxDescent = styles[i].descent;
 209                 }
 210         }
 211
 212         lineHeight = maxAscent + maxDescent;
 213         aveCharWidth = styles[STYLE_DEFAULT].aveCharWidth;
 214         spaceWidth = styles[STYLE_DEFAULT].spaceWidth;
 215
 216         fixedColumnWidth = leftMarginWidth;
 217         symbolMargin = false;
 218         maskInLine = 0xffffffff;
 219         for (int margin=0; margin < margins; margin++) {
 220                 fixedColumnWidth += ms[margin].width;
 221                 symbolMargin = symbolMargin || ms[margin].symbol;
 222                 if (ms[margin].width > 0)
 223                         maskInLine &= ~ms[margin].mask;
 224         }
 225 }
 226
 227 void ViewStyle::ResetDefaultStyle() {
 228         styles[STYLE_DEFAULT].Clear(ColourDesired(0,0,0),
 229                 ColourDesired(0xff,0xff,0xff),
 230                 Platform::DefaultFontSize(), fontNames.Save(Platform::DefaultFont()),
 231                 SC_CHARSET_DEFAULT,
 232                 false, false, false, false, Style::caseMixed, true, true);
 233 }
 234
 235 void ViewStyle::ClearStyles() {
 236         // Reset all styles to be like the default style
 237         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 238                 if (i != STYLE_DEFAULT) {
 239                         styles[i].ClearTo(styles[STYLE_DEFAULT]);
 240                 }
 241         }
 242         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 243 }
 244
 245 void ViewStyle::SetStyleFontName(int styleIndex, const char *name) {
 246         styles[styleIndex].fontName = fontNames.Save(name);
 247 }