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/* Copyright 2020 Jaakko Keränen <jaakko.keranen@iki.fi>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#pragma once
#include <the_Foundation/rect.h>
#include <the_Foundation/string.h>
#include <the_Foundation/vec2.h>
#include <SDL_render.h>
#include "fontpack.h"
iDeclareType(RegExp)
/* Content sizes: regular (1x) -> medium (1.2x) -> big (1.33x) -> large (1.67x) -> huge (2x) */
#define FONT_ID(name, style, size) ((name) + ((style) * max_FontSize) + (size))
enum iFontId {
default_FontId = 0, /* default is always the first font */
monospace_FontId = maxVariants_Fonts, /* 2nd font is always the monospace font */
documentHeading_FontId = maxVariants_Fonts * 2, /* heading font */
documentBody_FontId = maxVariants_Fonts * 3, /* body font */
documentMonospace_FontId = maxVariants_Fonts * 4,
auxiliary_FontId = maxVariants_Fonts * 5, /* the first auxiliary font (e.g., symbols) */
/* Meta: */
mask_FontId = 0x0000ffff, /* font IDs are 16-bit; see GmRun's packing */
alwaysVariableFlag_FontId = 0x00010000,
/* UI fonts: */
uiLabelTiny_FontId = FONT_ID(default_FontId, semiBold_FontStyle, uiTiny_FontSize),
uiLabelSmall_FontId = FONT_ID(default_FontId, regular_FontStyle, uiSmall_FontSize),
uiLabel_FontId = FONT_ID(default_FontId, regular_FontStyle, uiNormal_FontSize),
uiLabelMedium_FontId = FONT_ID(default_FontId, regular_FontStyle, uiMedium_FontSize),
uiLabelMediumBold_FontId = FONT_ID(default_FontId, bold_FontStyle, uiMedium_FontSize),
uiLabelBig_FontId = FONT_ID(default_FontId, regular_FontStyle, uiBig_FontSize),
uiLabelBold_FontId = FONT_ID(default_FontId, bold_FontStyle, uiNormal_FontSize),
uiLabelBigBold_FontId = FONT_ID(default_FontId, bold_FontStyle, uiBig_FontSize),
uiLabelLarge_FontId = FONT_ID(default_FontId, regular_FontStyle, uiLarge_FontSize),
uiLabelLargeBold_FontId = FONT_ID(default_FontId, bold_FontStyle, uiLarge_FontSize),
uiLabelSymbols_FontId = FONT_ID(auxiliary_FontId, regular_FontStyle, uiNormal_FontSize),
uiShortcuts_FontId = FONT_ID(default_FontId, regular_FontStyle, uiNormal_FontSize),
uiInput_FontId = FONT_ID(default_FontId, regular_FontStyle, uiMedium_FontSize),
uiContent_FontId = FONT_ID(default_FontId, regular_FontStyle, uiMedium_FontSize),
uiContentBold_FontId = FONT_ID(default_FontId, bold_FontStyle, uiMedium_FontSize),
uiContentSymbols_FontId = FONT_ID(auxiliary_FontId, regular_FontStyle, uiMedium_FontSize),
/* Document fonts: */
paragraph_FontId = FONT_ID(documentBody_FontId, regular_FontStyle, contentRegular_FontSize),
bold_FontId = FONT_ID(documentBody_FontId, semiBold_FontStyle, contentRegular_FontSize),
firstParagraph_FontId = FONT_ID(documentBody_FontId, regular_FontStyle, contentMedium_FontSize),
preformatted_FontId = FONT_ID(monospace_FontId, regular_FontStyle, contentSmall_FontSize),
preformattedSmall_FontId = FONT_ID(monospace_FontId, regular_FontStyle, contentTiny_FontSize),
quote_FontId = FONT_ID(documentBody_FontId, italic_FontStyle, contentRegular_FontSize),
heading1_FontId = FONT_ID(documentHeading_FontId, bold_FontStyle, contentHuge_FontSize),
heading2_FontId = FONT_ID(documentHeading_FontId, regular_FontStyle, contentLarge_FontSize),
heading3_FontId = FONT_ID(documentHeading_FontId, bold_FontStyle, contentBig_FontSize),
banner_FontId = FONT_ID(documentHeading_FontId, light_FontStyle, contentLarge_FontSize),
monospaceParagraph_FontId = FONT_ID(documentMonospace_FontId, regular_FontStyle, contentRegular_FontSize),
monospaceBold_FontId = FONT_ID(documentMonospace_FontId, semiBold_FontStyle, contentRegular_FontSize),
plainText_FontId = FONT_ID(documentMonospace_FontId, regular_FontStyle, contentRegular_FontSize),
};
//iLocalDef iBool isJapanese_FontId(enum iFontId id) {
// return id >= japanese_FontId && id < japanese_FontId + max_FontSize;
//}
#define emojiVariationSelector_Char ((iChar) 0xfe0f)
#if 0
/* TODO: get rid of this; configure using font ID strings, check RTL from FontFile flags */
enum iTextFont {
undefined_TextFont = -1,
nunito_TextFont = 0,
firaSans_TextFont,
literata_TextFont,
tinos_TextFont,
sourceSans3_TextFont,
iosevka_TextFont,
/* families: */
arabic_TextFont,
emojiAndSymbols_TextFont,
};
#endif
extern int gap_Text; /* affected by content font size */
iDeclareType(Text)
iDeclareTypeConstructionArgs(Text, SDL_Renderer *)
void init_Text (iText *, SDL_Renderer *);
void deinit_Text (iText *);
void setCurrent_Text (iText *);
void setDocumentFontSize_Text(iText *, float fontSizeFactor); /* affects all except `default*` fonts */
void resetFonts_Text (iText *);
int lineHeight_Text (int fontId);
float emRatio_Text (int fontId); /* em advance to line height ratio */
iRect visualBounds_Text (int fontId, iRangecc text);
int fontWithSize_Text (int fontId, enum iFontSize sizeId);
int fontWithStyle_Text (int fontId, enum iFontStyle styleId);
int fontWithFamily_Text (int fontId, enum iFontId familyId);
iDeclareType(TextMetrics)
struct Impl_TextMetrics {
iRect bounds; /* logical bounds: multiples of line height, horiz. advance */
iInt2 advance; /* cursor offset */
};
iLocalDef int maxWidth_TextMetrics(const iTextMetrics d) {
return iMax(width_Rect(d.bounds), d.advance.x);
}
iTextMetrics measureRange_Text (int fontId, iRangecc text);
iTextMetrics measureWrapRange_Text (int fontId, int maxWidth, iRangecc text);
iTextMetrics measureN_Text (int fontId, const char *text, size_t n); /* `n` in characters */
iLocalDef iTextMetrics measure_Text(int fontId, const char *text) {
return measureRange_Text(fontId, range_CStr(text));
}
iInt2 tryAdvance_Text (int fontId, iRangecc text, int width, const char **endPos);
iInt2 tryAdvanceNoWrap_Text (int fontId, iRangecc text, int width, const char **endPos);
enum iAlignment {
left_Alignment,
center_Alignment,
right_Alignment,
};
enum iAnsiFlag {
allowFg_AnsiFlag = iBit(1),
allowBg_AnsiFlag = iBit(2),
allowFontStyle_AnsiFlag = iBit(3),
allowAll_AnsiFlag = 0x7,
};
void setOpacity_Text (float opacity);
void setBaseAttributes_Text (int fontId, int fgColorId); /* current "normal" text attributes */
void setAnsiFlags_Text (int ansiFlags);
void cache_Text (int fontId, iRangecc text); /* pre-render glyphs */
void draw_Text (int fontId, iInt2 pos, int color, const char *text, ...);
void drawAlign_Text (int fontId, iInt2 pos, int color, enum iAlignment align, const char *text, ...);
void drawCentered_Text (int fontId, iRect rect, iBool alignVisual, int color, const char *text, ...);
void drawCenteredRange_Text (int fontId, iRect rect, iBool alignVisual, int color, iRangecc text);
void drawCenteredOutline_Text(int fontId, iRect rect, iBool alignVisual, int outlineColor,
int fillColor, const char *text, ...);
void drawString_Text (int fontId, iInt2 pos, int color, const iString *text);
void drawRange_Text (int fontId, iInt2 pos, int color, iRangecc text);
void drawRangeN_Text (int fontId, iInt2 pos, int color, iRangecc text, size_t maxLen);
void drawOutline_Text (int fontId, iInt2 pos, int outlineColor, int fillColor, iRangecc text);
void drawBoundRange_Text (int fontId, iInt2 pos, int boundWidth, int color, iRangecc text); /* bound does not wrap */
int drawWrapRange_Text (int fontId, iInt2 pos, int maxWidth, int color, iRangecc text); /* returns new Y */
iDeclareType(WrapText)
enum iWrapTextMode {
anyCharacter_WrapTextMode,
word_WrapTextMode,
};
iDeclareType(TextAttrib)
/* Initial attributes at the start of a text string. These may be modified by control
sequences inside a text run. */
struct Impl_TextAttrib {
int16_t fgColorId;
int16_t bgColorId;
struct {
uint16_t bold : 1;
uint16_t italic : 1;
uint16_t monospace : 1;
uint16_t isBaseRTL : 1;
uint16_t isRTL : 1;
};
};
struct Impl_WrapText {
/* arguments */
iRangecc text;
int maxWidth;
size_t maxLines; /* 0: unlimited */
enum iWrapTextMode mode;
iBool (*wrapFunc)(iWrapText *, iRangecc wrappedText, iTextAttrib attrib, int origin,
int advance);
void * context;
iChar overrideChar; /* use this for all characters instead of the real ones */
int baseDir; /* set to +1 for LTR, -1 for RTL */
iInt2 hitPoint; /* sets hitChar_out */
const char *hitChar; /* sets hitAdvance_out */
/* output */
const char *hitChar_out;
iInt2 hitAdvance_out;
float hitGlyphNormX_out; /* normalized X inside the glyph */
/* internal */
iRangecc wrapRange_;
};
iTextMetrics measure_WrapText (iWrapText *, int fontId);
iTextMetrics draw_WrapText (iWrapText *, int fontId, iInt2 pos, int color);
iBool checkMissing_Text (void); /* returns the flag, and clears it */
SDL_Texture * glyphCache_Text (void);
enum iTextBlockMode { quadrants_TextBlockMode, shading_TextBlockMode };
iString * renderBlockChars_Text (const iBlock *fontData, int height, enum iTextBlockMode,
const iString *text);
iRegExp * makeAnsiEscapePattern_Text (void);
/*-----------------------------------------------------------------------------------------------*/
iDeclareType(TextBuf)
iDeclareTypeConstructionArgs(TextBuf, iWrapText *wrap, int fontId, int color)
struct Impl_TextBuf {
SDL_Texture *texture;
iInt2 size;
};
iTextBuf * newRange_TextBuf(int font, int color, iRangecc text);
void draw_TextBuf (const iTextBuf *, iInt2 pos, int color);
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