ext/scintilla/src/ViewStyle.h

   1 // Scintilla source code edit control
   2 /** @file ViewStyle.h
   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 #ifndef VIEWSTYLE_H
   9 #define VIEWSTYLE_H
  10
  11 #ifdef SCI_NAMESPACE
  12 namespace Scintilla {
  13 #endif
  14
  15 /**
  16  */
  17 class MarginStyle {
  18 public:
  19         int style;
  20         ColourDesired back;
  21         int width;
  22         int mask;
  23         bool sensitive;
  24         int cursor;
  25         MarginStyle();
  26 };
  27
  28 /**
  29  */
  30 class FontNames {
  31 private:
  32         std::vector<char *> names;
  33
  34         // Private so FontNames objects can not be copied
  35         FontNames(const FontNames &);
  36 public:
  37         FontNames();
  38         ~FontNames();
  39         void Clear();
  40         const char *Save(const char *name);
  41 };
  42
  43 class FontRealised : public FontMeasurements {
  44         // Private so FontRealised objects can not be copied
  45         FontRealised(const FontRealised &);
  46         FontRealised &operator=(const FontRealised &);
  47 public:
  48         Font font;
  49         FontRealised();
  50         virtual ~FontRealised();
  51         void Realise(Surface &surface, int zoomLevel, int technology, const FontSpecification &fs);
  52 };
  53
  54 enum IndentView {ivNone, ivReal, ivLookForward, ivLookBoth};
  55
  56 enum WhiteSpaceVisibility {wsInvisible=0, wsVisibleAlways=1, wsVisibleAfterIndent=2, wsVisibleOnlyInIndent=3};
  57
  58 enum TabDrawMode {tdLongArrow=0, tdStrikeOut=1};
  59
  60 typedef std::map<FontSpecification, FontRealised *> FontMap;
  61
  62 enum WrapMode { eWrapNone, eWrapWord, eWrapChar, eWrapWhitespace };
  63
  64 class ColourOptional : public ColourDesired {
  65 public:
  66         bool isSet;
  67         ColourOptional(ColourDesired colour_=ColourDesired(0,0,0), bool isSet_=false) : ColourDesired(colour_), isSet(isSet_) {
  68         }
  69         ColourOptional(uptr_t wParam, sptr_t lParam) : ColourDesired(static_cast<long>(lParam)), isSet(wParam != 0) {
  70         }
  71 };
  72
  73 struct ForeBackColours {
  74         ColourOptional fore;
  75         ColourOptional back;
  76 };
  77
  78 struct EdgeProperties {
  79         int column;
  80         ColourDesired colour;
  81         EdgeProperties(int column_ = 0, ColourDesired colour_ = ColourDesired(0)) :
  82                 column(column_), colour(colour_) {
  83         }
  84         EdgeProperties(uptr_t wParam, sptr_t lParam) :
  85                 column(static_cast<int>(wParam)), colour(static_cast<long>(lParam)) {
  86         }
  87 };
  88
  89 /**
  90  */
  91 class ViewStyle {
  92         FontNames fontNames;
  93         FontMap fonts;
  94 public:
  95         std::vector<Style> styles;
  96         size_t nextExtendedStyle;
  97         LineMarker markers[MARKER_MAX + 1];
  98         int largestMarkerHeight;
  99         Indicator indicators[INDIC_MAX + 1];
 100         unsigned int indicatorsDynamic;
 101         unsigned int indicatorsSetFore;
 102         int technology;
 103         int lineHeight;
 104         int lineOverlap;
 105         unsigned int maxAscent;
 106         unsigned int maxDescent;
 107         XYPOSITION aveCharWidth;
 108         XYPOSITION spaceWidth;
 109         XYPOSITION tabWidth;
 110         ForeBackColours selColours;
 111         ColourDesired selAdditionalForeground;
 112         ColourDesired selAdditionalBackground;
 113         ColourDesired selBackground2;
 114         int selAlpha;
 115         int selAdditionalAlpha;
 116         bool selEOLFilled;
 117         ForeBackColours whitespaceColours;
 118         int controlCharSymbol;
 119         XYPOSITION controlCharWidth;
 120         ColourDesired selbar;
 121         ColourDesired selbarlight;
 122         ColourOptional foldmarginColour;
 123         ColourOptional foldmarginHighlightColour;
 124         ForeBackColours hotspotColours;
 125         bool hotspotUnderline;
 126         bool hotspotSingleLine;
 127         /// Margins are ordered: Line Numbers, Selection Margin, Spacing Margin
 128         int leftMarginWidth;    ///< Spacing margin on left of text
 129         int rightMarginWidth;   ///< Spacing margin on right of text
 130         int maskInLine; ///< Mask for markers to be put into text because there is nowhere for them to go in margin
 131         int maskDrawInText;     ///< Mask for markers that always draw in text
 132         std::vector<MarginStyle> ms;
 133         int fixedColumnWidth;   ///< Total width of margins
 134         bool marginInside;      ///< true: margin included in text view, false: separate views
 135         int textStart;  ///< Starting x position of text within the view
 136         int zoomLevel;
 137         WhiteSpaceVisibility viewWhitespace;
 138         TabDrawMode tabDrawMode;
 139         int whitespaceSize;
 140         IndentView viewIndentationGuides;
 141         bool viewEOL;
 142         ColourDesired caretcolour;
 143         ColourDesired additionalCaretColour;
 144         bool showCaretLineBackground;
 145         bool alwaysShowCaretLineBackground;
 146         ColourDesired caretLineBackground;
 147         int caretLineAlpha;
 148         int caretStyle;
 149         int caretWidth;
 150         bool someStylesProtected;
 151         bool someStylesForceCase;
 152         int extraFontFlag;
 153         int extraAscent;
 154         int extraDescent;
 155         int marginStyleOffset;
 156         int annotationVisible;
 157         int annotationStyleOffset;
 158         bool braceHighlightIndicatorSet;
 159         int braceHighlightIndicator;
 160         bool braceBadLightIndicatorSet;
 161         int braceBadLightIndicator;
 162         int edgeState;
 163         EdgeProperties theEdge;
 164         std::vector<EdgeProperties> theMultiEdge;
 165         int marginNumberPadding; // the right-side padding of the number margin
 166         int ctrlCharPadding; // the padding around control character text blobs
 167         int lastSegItalicsOffset; // the offset so as not to clip italic characters at EOLs
 168
 169         // Wrapping support
 170         WrapMode wrapState;
 171         int wrapVisualFlags;
 172         int wrapVisualFlagsLocation;
 173         int wrapVisualStartIndent;
 174         int wrapIndentMode; // SC_WRAPINDENT_FIXED, _SAME, _INDENT
 175
 176         ViewStyle();
 177         ViewStyle(const ViewStyle &source);
 178         ~ViewStyle();
 179         void CalculateMarginWidthAndMask();
 180         void Init(size_t stylesSize_=256);
 181         void Refresh(Surface &surface, int tabInChars);
 182         void ReleaseAllExtendedStyles();
 183         int AllocateExtendedStyles(int numberStyles);
 184         void EnsureStyle(size_t index);
 185         void ResetDefaultStyle();
 186         void ClearStyles();
 187         void SetStyleFontName(int styleIndex, const char *name);
 188         bool ProtectionActive() const;
 189         int ExternalMarginWidth() const;
 190         int MarginFromLocation(Point pt) const;
 191         bool ValidStyle(size_t styleIndex) const;
 192         void CalcLargestMarkerHeight();
 193         ColourOptional Background(int marksOfLine, bool caretActive, bool lineContainsCaret) const;
 194         bool SelectionBackgroundDrawn() const;
 195         bool WhitespaceBackgroundDrawn() const;
 196         ColourDesired WrapColour() const;
 197
 198         bool SetWrapState(int wrapState_);
 199         bool SetWrapVisualFlags(int wrapVisualFlags_);
 200         bool SetWrapVisualFlagsLocation(int wrapVisualFlagsLocation_);
 201         bool SetWrapVisualStartIndent(int wrapVisualStartIndent_);
 202         bool SetWrapIndentMode(int wrapIndentMode_);
 203
 204         bool WhiteSpaceVisible(bool inIndent) const;
 205
 206 private:
 207         void AllocStyles(size_t sizeNew);
 208         void CreateAndAddFont(const FontSpecification &fs);
 209         FontRealised *Find(const FontSpecification &fs);
 210         void FindMaxAscentDescent();
 211         // Private so can only be copied through copy constructor which ensures font names initialised correctly
 212         ViewStyle &operator=(const ViewStyle &);
 213 };
 214
 215 #ifdef SCI_NAMESPACE
 216 }
 217 #endif
 218
 219 #endif