contrib/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 1998-2003 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 "XPM.h"
  15 #include "LineMarker.h"
  16 #include "Style.h"
  17 #include "ViewStyle.h"
  18
  19 MarginStyle::MarginStyle() :
  20         symbol(false), width(16), mask(0xffffffff), sensitive(false) {
  21 }
  22
  23 // A list of the fontnames - avoids wasting space in each style
  24 FontNames::FontNames() {
  25         max = 0;
  26 }
  27
  28 FontNames::~FontNames() {
  29         Clear();
  30 }
  31
  32 void FontNames::Clear() {
  33         for (int i=0;i<max;i++) {
  34                 delete []names[i];
  35         }
  36         max = 0;
  37 }
  38
  39 const char *FontNames::Save(const char *name) {
  40         if (!name)
  41                 return 0;
  42         for (int i=0;i<max;i++) {
  43                 if (strcmp(names[i], name) == 0) {
  44                         return names[i];
  45                 }
  46         }
  47         names[max] = new char[strlen(name) + 1];
  48         strcpy(names[max], name);
  49         max++;
  50         return names[max-1];
  51 }
  52
  53 ViewStyle::ViewStyle() {
  54         Init();
  55 }
  56
  57 ViewStyle::ViewStyle(const ViewStyle &source) {
  58         Init();
  59         for (unsigned int sty=0;sty<(sizeof(styles)/sizeof(styles[0]));sty++) {
  60                 styles[sty] = source.styles[sty];
  61                 // Can't just copy fontname as its lifetime is relative to its owning ViewStyle
  62                 styles[sty].fontName = fontNames.Save(source.styles[sty].fontName);
  63         }
  64         for (int mrk=0;mrk<=MARKER_MAX;mrk++) {
  65                 markers[mrk] = source.markers[mrk];
  66         }
  67         for (int ind=0;ind<=INDIC_MAX;ind++) {
  68                 indicators[ind] = source.indicators[ind];
  69         }
  70
  71         selforeset = source.selforeset;
  72         selforeground.desired = source.selforeground.desired;
  73         selbackset = source.selbackset;
  74         selbackground.desired = source.selbackground.desired;
  75         selbackground2.desired = source.selbackground2.desired;
  76
  77         foldmarginColourSet = source.foldmarginColourSet;
  78         foldmarginColour.desired = source.foldmarginColour.desired;
  79         foldmarginHighlightColourSet = source.foldmarginHighlightColourSet;
  80         foldmarginHighlightColour.desired = source.foldmarginHighlightColour.desired;
  81
  82         hotspotForegroundSet = source.hotspotForegroundSet;
  83         hotspotForeground.desired = source.hotspotForeground.desired;
  84         hotspotBackgroundSet = source.hotspotBackgroundSet;
  85         hotspotBackground.desired = source.hotspotBackground.desired;
  86         hotspotUnderline = source.hotspotUnderline;
  87
  88         whitespaceForegroundSet = source.whitespaceForegroundSet;
  89         whitespaceForeground.desired = source.whitespaceForeground.desired;
  90         whitespaceBackgroundSet = source.whitespaceBackgroundSet;
  91         whitespaceBackground.desired = source.whitespaceBackground.desired;
  92         selbar.desired = source.selbar.desired;
  93         selbarlight.desired = source.selbarlight.desired;
  94         caretcolour.desired = source.caretcolour.desired;
  95         showCaretLineBackground = source.showCaretLineBackground;
  96         caretLineBackground.desired = source.caretLineBackground.desired;
  97         edgecolour.desired = source.edgecolour.desired;
  98         edgeState = source.edgeState;
  99         caretWidth = source.caretWidth;
 100         leftMarginWidth = source.leftMarginWidth;
 101         rightMarginWidth = source.rightMarginWidth;
 102         for (int i=0;i < margins; i++) {
 103                 ms[i] = source.ms[i];
 104         }
 105         symbolMargin = source.symbolMargin;
 106         maskInLine = source.maskInLine;
 107         fixedColumnWidth = source.fixedColumnWidth;
 108         zoomLevel = source.zoomLevel;
 109         viewWhitespace = source.viewWhitespace;
 110         viewIndentationGuides = source.viewIndentationGuides;
 111         viewEOL = source.viewEOL;
 112         showMarkedLines = source.showMarkedLines;
 113 }
 114
 115 ViewStyle::~ViewStyle() {
 116 }
 117
 118 void ViewStyle::Init() {
 119         fontNames.Clear();
 120         ResetDefaultStyle();
 121
 122         indicators[0].style = INDIC_SQUIGGLE;
 123         indicators[0].fore = ColourDesired(0, 0x7f, 0);
 124         indicators[1].style = INDIC_TT;
 125         indicators[1].fore = ColourDesired(0, 0, 0xff);
 126         indicators[2].style = INDIC_PLAIN;
 127         indicators[2].fore = ColourDesired(0xff, 0, 0);
 128
 129         lineHeight = 1;
 130         maxAscent = 1;
 131         maxDescent = 1;
 132         aveCharWidth = 8;
 133         spaceWidth = 8;
 134
 135         selforeset = false;
 136         selforeground.desired = ColourDesired(0xff, 0, 0);
 137         selbackset = true;
 138         selbackground.desired = ColourDesired(0xc0, 0xc0, 0xc0);
 139         selbackground2.desired = ColourDesired(0xb0, 0xb0, 0xb0);
 140
 141         foldmarginColourSet = false;
 142         foldmarginColour.desired = ColourDesired(0xff, 0, 0);
 143         foldmarginHighlightColourSet = false;
 144         foldmarginHighlightColour.desired = ColourDesired(0xc0, 0xc0, 0xc0);
 145
 146         whitespaceForegroundSet = false;
 147         whitespaceForeground.desired = ColourDesired(0, 0, 0);
 148         whitespaceBackgroundSet = false;
 149         whitespaceBackground.desired = ColourDesired(0xff, 0xff, 0xff);
 150         selbar.desired = Platform::Chrome();
 151         selbarlight.desired = Platform::ChromeHighlight();
 152         styles[STYLE_LINENUMBER].fore.desired = ColourDesired(0, 0, 0);
 153         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 154         caretcolour.desired = ColourDesired(0, 0, 0);
 155         showCaretLineBackground = false;
 156         caretLineBackground.desired = ColourDesired(0xff, 0xff, 0);
 157         edgecolour.desired = ColourDesired(0xc0, 0xc0, 0xc0);
 158         edgeState = EDGE_NONE;
 159         caretWidth = 1;
 160         someStylesProtected = false;
 161
 162         hotspotForegroundSet = false;
 163         hotspotForeground.desired = ColourDesired(0, 0, 0xff);
 164         hotspotBackgroundSet = false;
 165         hotspotBackground.desired = ColourDesired(0xff, 0xff, 0xff);
 166         hotspotUnderline = true;
 167
 168         leftMarginWidth = 1;
 169         rightMarginWidth = 1;
 170         ms[0].symbol = false;
 171         ms[0].width = 0;
 172         ms[0].mask = 0;
 173         ms[1].symbol = true;
 174         ms[1].width = 16;
 175         ms[1].mask = ~SC_MASK_FOLDERS;
 176         ms[2].symbol = true;
 177         ms[2].width = 0;
 178         ms[2].mask = 0;
 179         fixedColumnWidth = leftMarginWidth;
 180         symbolMargin = false;
 181         maskInLine = 0xffffffff;
 182         for (int margin=0; margin < margins; margin++) {
 183                 fixedColumnWidth += ms[margin].width;
 184                 symbolMargin = symbolMargin || ms[margin].symbol;
 185                 if (ms[margin].width > 0)
 186                         maskInLine &= ~ms[margin].mask;
 187         }
 188         zoomLevel = 0;
 189         viewWhitespace = wsInvisible;
 190         viewIndentationGuides = false;
 191         viewEOL = false;
 192         showMarkedLines = true;
 193 }
 194
 195 void ViewStyle::RefreshColourPalette(Palette &pal, bool want) {
 196         unsigned int i;
 197         for (i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 198                 pal.WantFind(styles[i].fore, want);
 199                 pal.WantFind(styles[i].back, want);
 200         }
 201         for (i=0;i<(sizeof(indicators)/sizeof(indicators[0]));i++) {
 202                 pal.WantFind(indicators[i].fore, want);
 203         }
 204         for (i=0;i<(sizeof(markers)/sizeof(markers[0]));i++) {
 205                 markers[i].RefreshColourPalette(pal, want);
 206         }
 207         pal.WantFind(selforeground, want);
 208         pal.WantFind(selbackground, want);
 209         pal.WantFind(selbackground2, want);
 210
 211         pal.WantFind(foldmarginColour, want);
 212         pal.WantFind(foldmarginHighlightColour, want);
 213
 214         pal.WantFind(whitespaceForeground, want);
 215         pal.WantFind(whitespaceBackground, want);
 216         pal.WantFind(selbar, want);
 217         pal.WantFind(selbarlight, want);
 218         pal.WantFind(caretcolour, want);
 219         pal.WantFind(caretLineBackground, want);
 220         pal.WantFind(edgecolour, want);
 221         pal.WantFind(hotspotForeground, want);
 222         pal.WantFind(hotspotBackground, want);
 223 }
 224
 225 void ViewStyle::Refresh(Surface &surface) {
 226         selbar.desired = Platform::Chrome();
 227         selbarlight.desired = Platform::ChromeHighlight();
 228         styles[STYLE_DEFAULT].Realise(surface, zoomLevel);
 229         maxAscent = styles[STYLE_DEFAULT].ascent;
 230         maxDescent = styles[STYLE_DEFAULT].descent;
 231         someStylesProtected = false;
 232         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 233                 if (i != STYLE_DEFAULT) {
 234                         styles[i].Realise(surface, zoomLevel, &styles[STYLE_DEFAULT]);
 235                         if (maxAscent < styles[i].ascent)
 236                                 maxAscent = styles[i].ascent;
 237                         if (maxDescent < styles[i].descent)
 238                                 maxDescent = styles[i].descent;
 239                 }
 240                 if (styles[i].IsProtected()) {
 241                         someStylesProtected = true;
 242                 }
 243         }
 244
 245         lineHeight = maxAscent + maxDescent;
 246         aveCharWidth = styles[STYLE_DEFAULT].aveCharWidth;
 247         spaceWidth = styles[STYLE_DEFAULT].spaceWidth;
 248
 249         fixedColumnWidth = leftMarginWidth;
 250         symbolMargin = false;
 251         maskInLine = 0xffffffff;
 252         for (int margin=0; margin < margins; margin++) {
 253                 fixedColumnWidth += ms[margin].width;
 254                 symbolMargin = symbolMargin || ms[margin].symbol;
 255                 if (ms[margin].width > 0)
 256                         maskInLine &= ~ms[margin].mask;
 257         }
 258 }
 259
 260 void ViewStyle::ResetDefaultStyle() {
 261         styles[STYLE_DEFAULT].Clear(ColourDesired(0,0,0),
 262                 ColourDesired(0xff,0xff,0xff),
 263                 Platform::DefaultFontSize(), fontNames.Save(Platform::DefaultFont()),
 264                 SC_CHARSET_DEFAULT,
 265                 false, false, false, false, Style::caseMixed, true, true, false);
 266 }
 267
 268 void ViewStyle::ClearStyles() {
 269         // Reset all styles to be like the default style
 270         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 271                 if (i != STYLE_DEFAULT) {
 272                         styles[i].ClearTo(styles[STYLE_DEFAULT]);
 273                 }
 274         }
 275         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 276 }
 277
 278 void ViewStyle::SetStyleFontName(int styleIndex, const char *name) {
 279         styles[styleIndex].fontName = fontNames.Save(name);
 280 }
 281
 282 bool ViewStyle::ProtectionActive() const {
 283     return someStylesProtected;
 284 }