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#ifndef STAR_TEXT_PAINTER_HPP
#define STAR_TEXT_PAINTER_HPP
#include "StarFontTextureGroup.hpp"
#include "StarAnchorTypes.hpp"
#include "StarRoot.hpp"
#include "StarStringView.hpp"
namespace Star {
STAR_CLASS(TextPainter);
namespace Text {
unsigned char const StartEsc = '\x1b';
unsigned char const EndEsc = ';';
unsigned char const CmdEsc = '^';
unsigned char const SpecialCharLimit = ' ';
String stripEscapeCodes(String const& s);
String preprocessEscapeCodes(String const& s);
String extractCodes(String const& s);
}
enum class FontMode {
Normal,
Shadow
};
float const DefaultLineSpacing = 1.3f;
struct TextPositioning {
TextPositioning();
TextPositioning(Vec2F pos,
HorizontalAnchor hAnchor = HorizontalAnchor::LeftAnchor,
VerticalAnchor vAnchor = VerticalAnchor::BottomAnchor,
Maybe<unsigned> wrapWidth = {},
Maybe<unsigned> charLimit = {});
TextPositioning(Json const& v);
Json toJson() const;
TextPositioning translated(Vec2F translation) const;
Vec2F pos;
HorizontalAnchor hAnchor;
VerticalAnchor vAnchor;
Maybe<unsigned> wrapWidth;
Maybe<unsigned> charLimit;
};
// Renders text while caching individual glyphs for fast rendering but with *no
// kerning*.
class TextPainter {
public:
TextPainter(RendererPtr renderer, TextureGroupPtr textureGroup);
RectF renderText(StringView s, TextPositioning const& position);
RectF renderLine(StringView s, TextPositioning const& position);
RectF renderGlyph(String::Char c, TextPositioning const& position);
RectF determineTextSize(StringView s, TextPositioning const& position);
RectF determineLineSize(StringView s, TextPositioning const& position);
RectF determineGlyphSize(String::Char c, TextPositioning const& position);
int glyphWidth(String::Char c);
int stringWidth(StringView s);
typedef function<bool(StringView, int)> WrapTextCallback;
bool processWrapText(StringView s, unsigned* wrapWidth, WrapTextCallback textFunc);
List<StringView> wrapTextViews(StringView s, Maybe<unsigned> wrapWidth);
StringList wrapText(StringView s, Maybe<unsigned> wrapWidth);
unsigned fontSize() const;
void setFontSize(unsigned size);
void setLineSpacing(float lineSpacing);
void setMode(FontMode mode);
void setFontColor(Vec4B color);
void setProcessingDirectives(StringView directives);
void setFont(String const& font);
void addFont(FontPtr const& font, String const& name);
void reloadFonts();
void cleanup(int64_t textureTimeout);
void applyCommands(StringView unsplitCommands);
private:
struct RenderSettings {
FontMode mode;
Vec4B color;
String font;
Directives directives;
};
RectF doRenderText(StringView s, TextPositioning const& position, bool reallyRender, unsigned* charLimit);
RectF doRenderLine(StringView s, TextPositioning const& position, bool reallyRender, unsigned* charLimit);
RectF doRenderGlyph(String::Char c, TextPositioning const& position, bool reallyRender);
void renderGlyph(String::Char c, Vec2F const& screenPos, unsigned fontSize, float scale, Vec4B const& color, Directives const* processingDirectives = nullptr);
RendererPtr m_renderer;
FontTextureGroup m_fontTextureGroup;
unsigned m_fontSize;
float m_lineSpacing;
RenderSettings m_renderSettings;
RenderSettings m_savedRenderSettings;
String m_nonRenderedCharacters;
TrackerListenerPtr m_reloadTracker;
};
}
#endif
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