contrib/src/stc/scintilla/src/ViewStyle.cxx

   1 // Scintilla source code edit control
   2 // ViewStyle.cxx - store information on how the document is to be viewed
   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 <string.h>
   7
   8 #include "Platform.h"
   9
  10 #include "Scintilla.h"
  11 #include "Indicator.h"
  12 #include "LineMarker.h"
  13 #include "Style.h"
  14 #include "ViewStyle.h"
  15
  16 MarginStyle::MarginStyle() :
  17         symbol(false), width(16), mask(0xffffffff), sensitive(false) {
  18 }
  19
  20 // A list of the fontnames - avoids wasting space in each style
  21 FontNames::FontNames() {
  22         max = 0;
  23 }
  24
  25 FontNames::~FontNames() {
  26         Clear();
  27 }
  28
  29 void FontNames::Clear() {
  30         for (int i=0;i<max;i++) {
  31                 delete []names[i];
  32         }
  33         max = 0;
  34 }
  35
  36 const char *FontNames::Save(const char *name) {
  37         if (!name)
  38                 return 0;
  39         for (int i=0;i<max;i++) {
  40                 if (strcmp(names[i], name) == 0) {
  41                         return names[i];
  42                 }
  43         }
  44         names[max] = new char[strlen(name) + 1];
  45         strcpy(names[max], name);
  46         max++;
  47         return names[max-1];
  48 }
  49
  50 ViewStyle::ViewStyle() {
  51         Init();
  52 }
  53
  54 ViewStyle::ViewStyle(const ViewStyle &source) {
  55         Init();
  56         for (unsigned int sty=0;sty<(sizeof(styles)/sizeof(styles[0]));sty++) {
  57                 styles[sty] = source.styles[sty];
  58                 // Can't just copy fontname as its lifetime is relative to its owning ViewStyle
  59                 styles[sty].fontName = fontNames.Save(source.styles[sty].fontName);
  60         }
  61         for (int mrk=0;mrk<=MARKER_MAX;mrk++) {
  62                 markers[mrk] = source.markers[mrk];
  63         }
  64         for (int ind=0;ind<=INDIC_MAX;ind++) {
  65                 indicators[ind] = source.indicators[ind];
  66         }
  67
  68         selforeset = source.selforeset;
  69         selforeground.desired = source.selforeground.desired;
  70         selbackset = source.selbackset;
  71         selbackground.desired = source.selbackground.desired;
  72         selbar.desired = source.selbar.desired;
  73         selbarlight.desired = source.selbarlight.desired;
  74         caretcolour.desired = source.caretcolour.desired;
  75         edgecolour.desired = source.edgecolour.desired;
  76         leftMarginWidth = source.leftMarginWidth;
  77         rightMarginWidth = source.rightMarginWidth;
  78         for (int i=0;i < margins; i++) {
  79                 ms[i] = source.ms[i];
  80         }
  81         symbolMargin = source.symbolMargin;
  82         maskInLine = source.maskInLine;
  83         fixedColumnWidth = source.fixedColumnWidth;
  84         zoomLevel = source.zoomLevel;
  85         viewWhitespace = source.viewWhitespace;
  86         viewEOL = source.viewEOL;
  87         showMarkedLines = source.showMarkedLines;
  88 }
  89
  90 ViewStyle::~ViewStyle() {
  91 }
  92
  93 void ViewStyle::Init() {
  94         fontNames.Clear();
  95         ResetDefaultStyle();
  96
  97         indicators[0].style = INDIC_SQUIGGLE;
  98         indicators[0].fore = Colour(0, 0x7f, 0);
  99         indicators[1].style = INDIC_TT;
 100         indicators[1].fore = Colour(0, 0, 0xff);
 101         indicators[2].style = INDIC_PLAIN;
 102         indicators[2].fore = Colour(0xff, 0, 0);
 103
 104         lineHeight = 1;
 105         maxAscent = 1;
 106         maxDescent = 1;
 107         aveCharWidth = 8;
 108         spaceWidth = 8;
 109
 110         selforeset = false;
 111         selforeground.desired = Colour(0xff, 0, 0);
 112         selbackset = true;
 113         selbackground.desired = Colour(0xc0, 0xc0, 0xc0);
 114         selbar.desired = Platform::Chrome();
 115         selbarlight.desired = Platform::ChromeHighlight();
 116         styles[STYLE_LINENUMBER].fore.desired = Colour(0, 0, 0);
 117         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 118         //caretcolour.desired = Colour(0xff, 0, 0);
 119         caretcolour.desired = Colour(0, 0, 0);
 120         edgecolour.desired = Colour(0xc0, 0xc0, 0xc0);
 121
 122         leftMarginWidth = 1;
 123         rightMarginWidth = 1;
 124         ms[0].symbol = false;
 125         ms[0].width = 0;
 126         ms[0].mask = 0;
 127         ms[1].symbol = true;
 128         ms[1].width = 16;
 129         ms[1].mask = ~SC_MASK_FOLDERS;
 130         ms[2].symbol = true;
 131         ms[2].width = 14;       // Nice width for arrows
 132         ms[2].mask = SC_MASK_FOLDERS;
 133         ms[2].width = 0;        // Nice width for arrows
 134         ms[2].mask = 0;
 135         fixedColumnWidth = leftMarginWidth;
 136         symbolMargin = false;
 137         maskInLine = 0xffffffff;
 138         for (int margin=0; margin < margins; margin++) {
 139                 fixedColumnWidth += ms[margin].width;
 140                 symbolMargin = symbolMargin || ms[margin].symbol;
 141                 if (ms[margin].width > 0)
 142                         maskInLine &= ~ms[margin].mask;
 143         }
 144         zoomLevel = 0;
 145         viewWhitespace = false;
 146         viewEOL = false;
 147         showMarkedLines = true;
 148 }
 149
 150 void ViewStyle::RefreshColourPalette(Palette &pal, bool want) {
 151         unsigned int i;
 152         for (i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 153                 pal.WantFind(styles[i].fore, want);
 154                 pal.WantFind(styles[i].back, want);
 155         }
 156         for (i=0;i<(sizeof(indicators)/sizeof(indicators[0]));i++) {
 157                 pal.WantFind(indicators[i].fore, want);
 158         }
 159         for (i=0;i<(sizeof(markers)/sizeof(markers[0]));i++) {
 160                 pal.WantFind(markers[i].fore, want);
 161                 pal.WantFind(markers[i].back, want);
 162         }
 163         pal.WantFind(selforeground, want);
 164         pal.WantFind(selbackground, want);
 165         pal.WantFind(selbar, want);
 166         pal.WantFind(selbarlight, want);
 167         pal.WantFind(caretcolour, want);
 168         pal.WantFind(edgecolour, want);
 169 }
 170
 171 void ViewStyle::Refresh(Surface &surface) {
 172         selbar.desired = Platform::Chrome();
 173         selbarlight.desired = Platform::ChromeHighlight();
 174         styles[STYLE_DEFAULT].Realise(surface, zoomLevel);
 175         maxAscent = styles[STYLE_DEFAULT].ascent;
 176         maxDescent = styles[STYLE_DEFAULT].descent;
 177         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 178                 if (i != STYLE_DEFAULT) {
 179                         styles[i].Realise(surface, zoomLevel, &styles[STYLE_DEFAULT]);
 180                         if (maxAscent < styles[i].ascent)
 181                                 maxAscent = styles[i].ascent;
 182                         if (maxDescent < styles[i].descent)
 183                                 maxDescent = styles[i].descent;
 184                 }
 185         }
 186
 187         lineHeight = maxAscent + maxDescent;
 188         aveCharWidth = styles[STYLE_DEFAULT].aveCharWidth;
 189         spaceWidth = styles[STYLE_DEFAULT].spaceWidth;
 190
 191         fixedColumnWidth = leftMarginWidth;
 192         symbolMargin = false;
 193         maskInLine = 0xffffffff;
 194         for (int margin=0; margin < margins; margin++) {
 195                 fixedColumnWidth += ms[margin].width;
 196                 symbolMargin = symbolMargin || ms[margin].symbol;
 197                 if (ms[margin].width > 0)
 198                         maskInLine &= ~ms[margin].mask;
 199         }
 200 }
 201
 202 void ViewStyle::ResetDefaultStyle() {
 203         styles[STYLE_DEFAULT].Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
 204                 Platform::DefaultFontSize(), fontNames.Save(Platform::DefaultFont()),
 205                 false, false, false);
 206 }
 207
 208 void ViewStyle::ClearStyles() {
 209         // Reset all styles to be like the default style
 210         for (unsigned int i=0;i<(sizeof(styles)/sizeof(styles[0]));i++) {
 211                 if (i != STYLE_DEFAULT) {
 212                         styles[i].Clear(
 213                                 styles[STYLE_DEFAULT].fore.desired,
 214                                 styles[STYLE_DEFAULT].back.desired,
 215                                 styles[STYLE_DEFAULT].size,
 216                                 styles[STYLE_DEFAULT].fontName,
 217                                 styles[STYLE_DEFAULT].bold,
 218                                 styles[STYLE_DEFAULT].italic,
 219                                 styles[STYLE_DEFAULT].eolFilled);
 220                 }
 221         }
 222         styles[STYLE_LINENUMBER].back.desired = Platform::Chrome();
 223 }
 224
 225 void ViewStyle::SetStyleFontName(int styleIndex, const char *name) {
 226         styles[styleIndex].fontName = fontNames.Save(name);
 227 }