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// Scintilla source code edit control
/** @file ViewStyle.h
** Store information on how the document is to be viewed.
**/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#ifndef VIEWSTYLE_H
#define VIEWSTYLE_H
namespace Scintilla {
/**
*/
class MarginStyle {
public:
int style;
ColourAlpha back;
int width;
int mask;
bool sensitive;
int cursor;
MarginStyle(int style_= SC_MARGIN_SYMBOL, int width_=0, int mask_=0) noexcept;
};
/**
*/
class FontRealised : public FontMeasurements {
public:
std::shared_ptr<Font> font;
FontRealised() noexcept;
// FontRealised objects can not be copied.
FontRealised(const FontRealised &) = delete;
FontRealised(FontRealised &&) = delete;
FontRealised &operator=(const FontRealised &) = delete;
FontRealised &operator=(FontRealised &&) = delete;
virtual ~FontRealised();
void Realise(Surface &surface, int zoomLevel, int technology, const FontSpecification &fs, const char *localeName);
};
enum class IndentView {none, real, lookForward, lookBoth};
enum class WhiteSpace {invisible=0, visibleAlways=1, visibleAfterIndent=2, visibleOnlyInIndent=3};
enum class TabDrawMode {longArrow=0, strikeOut=1};
typedef std::map<FontSpecification, std::unique_ptr<FontRealised>> FontMap;
enum class WrapMode { none, word, character, whitespace };
inline std::optional<ColourAlpha> OptionalColour(uptr_t wParam, sptr_t lParam) {
if (wParam) {
return ColourAlpha::FromRGB(static_cast<int>(lParam));
} else {
return {};
}
}
struct ForeBackColours {
std::optional<ColourAlpha> fore;
std::optional<ColourAlpha> back;
};
struct SelectionAppearance {
// Whether to draw on base layer or over text
Layer layer;
// Draw selection past line end characters up to right border
bool eolFilled;
};
struct CaretLineAppearance {
// Whether to draw on base layer or over text
Layer layer;
// Also show when non-focused
bool alwaysShow;
// Non-0: draw a rectangle around line instead of filling line. Value is pixel width of frame
int frame;
};
struct CaretAppearance {
// Line, block, over-strike bar ...
int style;
// Width in pixels
int width;
};
struct WrapAppearance {
// No wrapping, word, character, whitespace appearance
WrapMode state;
// Show indication of wrap at line end, line start, or in margin
int visualFlags;
// Show indication near margin or near text
int visualFlagsLocation;
// How much indentation to show wrapping
int visualStartIndent;
// SC_WRAPINDENT_FIXED, _SAME, _INDENT, _DEEPINDENT
int indentMode;
};
struct EdgeProperties {
int column = 0;
ColourAlpha colour;
EdgeProperties(int column_ = 0, ColourAlpha colour_ = ColourAlpha::FromRGB(0)) noexcept :
column(column_), colour(colour_) {
}
EdgeProperties(uptr_t wParam, sptr_t lParam) noexcept :
column(static_cast<int>(wParam)), colour(ColourAlpha::FromRGB(static_cast<int>(lParam))) {
}
};
/**
*/
class ViewStyle {
UniqueStringSet fontNames;
FontMap fonts;
public:
std::vector<Style> styles;
int nextExtendedStyle;
std::vector<LineMarker> markers;
int largestMarkerHeight;
std::vector<Indicator> indicators;
bool indicatorsDynamic;
bool indicatorsSetFore;
int technology;
int lineHeight;
int lineOverlap;
unsigned int maxAscent;
unsigned int maxDescent;
XYPOSITION aveCharWidth;
XYPOSITION spaceWidth;
XYPOSITION tabWidth;
SelectionAppearance selection;
int controlCharSymbol;
XYPOSITION controlCharWidth;
ColourAlpha selbar;
ColourAlpha selbarlight;
std::optional<ColourAlpha> foldmarginColour;
std::optional<ColourAlpha> foldmarginHighlightColour;
ForeBackColours hotspotColours;
bool hotspotUnderline;
/// Margins are ordered: Line Numbers, Selection Margin, Spacing Margin
int leftMarginWidth; ///< Spacing margin on left of text
int rightMarginWidth; ///< Spacing margin on right of text
int maskInLine; ///< Mask for markers to be put into text because there is nowhere for them to go in margin
int maskDrawInText; ///< Mask for markers that always draw in text
std::vector<MarginStyle> ms;
int fixedColumnWidth; ///< Total width of margins
bool marginInside; ///< true: margin included in text view, false: separate views
int textStart; ///< Starting x position of text within the view
int zoomLevel;
WhiteSpace viewWhitespace;
std::optional<ColourAlpha> whitespaceBack;
TabDrawMode tabDrawMode;
int whitespaceSize;
IndentView viewIndentationGuides;
bool viewEOL;
CaretAppearance caret;
CaretLineAppearance caretLine;
bool someStylesProtected;
bool someStylesForceCase;
int extraFontFlag;
int extraAscent;
int extraDescent;
int marginStyleOffset;
int annotationVisible;
int annotationStyleOffset;
int eolAnnotationVisible;
int eolAnnotationStyleOffset;
bool braceHighlightIndicatorSet;
int braceHighlightIndicator;
bool braceBadLightIndicatorSet;
int braceBadLightIndicator;
int edgeState;
EdgeProperties theEdge;
std::vector<EdgeProperties> theMultiEdge;
int marginNumberPadding; // the right-side padding of the number margin
int ctrlCharPadding; // the padding around control character text blobs
int lastSegItalicsOffset; // the offset so as not to clip italic characters at EOLs
using ElementMap = std::map<int, std::optional<ColourAlpha>>;
ElementMap elementColours;
ElementMap elementBaseColours;
std::set<int> elementAllowsTranslucent;
WrapAppearance wrap;
std::string localeName;
ViewStyle();
ViewStyle(const ViewStyle &source);
ViewStyle(ViewStyle &&) = delete;
// Can only be copied through copy constructor which ensures font names initialised correctly
ViewStyle &operator=(const ViewStyle &) = delete;
ViewStyle &operator=(ViewStyle &&) = delete;
~ViewStyle();
void CalculateMarginWidthAndMask() noexcept;
void Init(size_t stylesSize_=256);
void Refresh(Surface &surface, int tabInChars);
void ReleaseAllExtendedStyles() noexcept;
int AllocateExtendedStyles(int numberStyles);
void EnsureStyle(size_t index);
void ResetDefaultStyle();
void ClearStyles();
void SetStyleFontName(int styleIndex, const char *name);
void SetFontLocaleName(const char *name);
bool ProtectionActive() const noexcept;
int ExternalMarginWidth() const noexcept;
int MarginFromLocation(Point pt) const noexcept;
bool ValidStyle(size_t styleIndex) const noexcept;
void CalcLargestMarkerHeight() noexcept;
int GetFrameWidth() const noexcept;
bool IsLineFrameOpaque(bool caretActive, bool lineContainsCaret) const;
std::optional<ColourAlpha> Background(int marksOfLine, bool caretActive, bool lineContainsCaret) const;
bool SelectionBackgroundDrawn() const noexcept;
bool SelectionTextDrawn() const;
bool WhitespaceBackgroundDrawn() const noexcept;
ColourAlpha WrapColour() const noexcept;
void AddMultiEdge(uptr_t wParam, sptr_t lParam);
std::optional<ColourAlpha> ElementColour(int element) const;
bool ElementAllowsTranslucent(int element) const;
bool ResetElement(int element);
bool SetElementColour(int element, ColourAlpha colour);
bool SetElementColourOptional(int element, uptr_t wParam, sptr_t lParam);
void SetElementRGB(int element, int rgb);
void SetElementAlpha(int element, int alpha);
bool ElementIsSet(int element) const;
bool SetElementBase(int element, ColourAlpha colour);
bool SetWrapState(int wrapState_) noexcept;
bool SetWrapVisualFlags(int wrapVisualFlags_) noexcept;
bool SetWrapVisualFlagsLocation(int wrapVisualFlagsLocation_) noexcept;
bool SetWrapVisualStartIndent(int wrapVisualStartIndent_) noexcept;
bool SetWrapIndentMode(int wrapIndentMode_) noexcept;
bool WhiteSpaceVisible(bool inIndent) const noexcept;
enum class CaretShape { invisible, line, block, bar };
bool IsBlockCaretStyle() const noexcept;
bool IsCaretVisible() const noexcept;
bool DrawCaretInsideSelection(bool inOverstrike, bool imeCaretBlockOverride) const noexcept;
CaretShape CaretShapeForMode(bool inOverstrike) const noexcept;
private:
void AllocStyles(size_t sizeNew);
void CreateAndAddFont(const FontSpecification &fs);
FontRealised *Find(const FontSpecification &fs);
void FindMaxAscentDescent();
};
}
#endif
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