Text: Light and regular font weight via ANSI escapes

SGR codes 2 and 10.

3 files changed, 39 insertions, 7 deletions

diff --git a/src/gmdocument.c b/src/gmdocument.c
index fd13bc82..60773e0b 100644
--- a/src/gmdocument.c
+++ b/src/gmdocument.c
@@ -556,16 +556,22 @@ static const int maxLedeLines_ = 10;
 
 static void applyAttributes_RunTypesetter_(iRunTypesetter *d, iTextAttrib attrib) {
     /* WARNING: This is duplicated in run_Font_(). Make sure they behave identically. */
-    if (attrib.bold) {
-        d->run.font = fontWithStyle_Text(d->baseFont, bold_FontStyle);
-        d->run.color = tmFirstParagraph_ColorId;
+    if (attrib.monospace) {
+        d->run.font = fontWithFamily_Text(d->baseFont, monospace_FontId);
+        d->run.color = tmPreformatted_ColorId;
     }
     else if (attrib.italic) {
         d->run.font = fontWithStyle_Text(d->baseFont, italic_FontStyle);
     }
-    else if (attrib.monospace) {
-        d->run.font = fontWithFamily_Text(d->baseFont, monospace_FontId);
-        d->run.color = tmPreformatted_ColorId;
+    else if (attrib.regular) {
+        d->run.font = fontWithStyle_Text(d->baseFont, regular_FontStyle);
+    }
+    else if (attrib.bold) {
+        d->run.font = fontWithStyle_Text(d->baseFont, bold_FontStyle);
+        d->run.color = tmFirstParagraph_ColorId;
+    }
+    else if (attrib.light) {
+        d->run.font = fontWithStyle_Text(d->baseFont, light_FontStyle);
     }
     else {
         d->run.font  = d->baseFont;
diff --git a/src/ui/text.c b/src/ui/text.c
index 116c5eba..4b43f872 100644
--- a/src/ui/text.c
+++ b/src/ui/text.c
@@ -453,6 +453,10 @@ void setAnsiFlags_Text(int ansiFlags) {
     activeText_->ansiFlags = ansiFlags;
 }
 
+int ansiFlags_Text(void) {
+    return activeText_->ansiFlags;
+}
+
 void setDocumentFontSize_Text(iText *d, float fontSizeFactor) {
     fontSizeFactor *= contentScale_Text_;
     iAssert(fontSizeFactor > 0);
@@ -834,7 +838,6 @@ static void prepare_AttributedText_(iAttributedText *d, int overrideBaseDir, iCh
         .font    = d->font,
     };
     const int     *logToSource = constData_Array(&d->logicalToSourceOffset);
-    const int *    logToVis    = constData_Array(&d->logicalToVisual);
     const iChar *  logicalText = constData_Array(&d->logical);
     iBool          isRTL       = d->isBaseRTL;
     int            numNonSpace = 0;
@@ -874,17 +877,34 @@ static void prepare_AttributedText_(iAttributedText *d, int overrideBaseDir, iCh
                     /* Note: This styling is hardcoded to match `typesetOneLine_RunTypesetter_()`. */
                     if (ansi & allowFontStyle_AnsiFlag && equal_Rangecc(sequence, "1")) {
                         run.attrib.bold = iTrue;
+                        run.attrib.regular = iFalse;
+                        run.attrib.light = iFalse;
                         if (d->baseFgColorId == tmParagraph_ColorId) {
                             setFgColor_AttributedRun_(&run, tmFirstParagraph_ColorId);
                         }
                         attribFont = font_Text_(fontWithStyle_Text(fontId_Text_(d->baseFont),
                                                                    bold_FontStyle));
                     }
+                    else if (ansi & allowFontStyle_AnsiFlag && equal_Rangecc(sequence, "2")) {
+                        run.attrib.light = iTrue;
+                        run.attrib.regular = iFalse;
+                        run.attrib.bold = iFalse;
+                        attribFont = font_Text_(fontWithStyle_Text(fontId_Text_(d->baseFont),
+                                                                   light_FontStyle));
+                    }
                     else if (ansi & allowFontStyle_AnsiFlag && equal_Rangecc(sequence, "3")) {
                         run.attrib.italic = iTrue;
                         attribFont = font_Text_(fontWithStyle_Text(fontId_Text_(d->baseFont),
                                                                    italic_FontStyle));
                     }
+                    else if (ansi & allowFontStyle_AnsiFlag && equal_Rangecc(sequence, "10")) {
+                        run.attrib.regular = iTrue;
+                        run.attrib.bold = iFalse;
+                        run.attrib.light = iFalse;
+                        run.attrib.italic = iFalse;
+                        attribFont = font_Text_(fontWithStyle_Text(fontId_Text_(d->baseFont),
+                                                                   regular_FontStyle));
+                    }
                     else if (ansi & allowFontStyle_AnsiFlag && equal_Rangecc(sequence, "11")) {
                         run.attrib.monospace = iTrue;
                         setFgColor_AttributedRun_(&run, tmPreformatted_ColorId);
@@ -892,7 +912,9 @@ static void prepare_AttributedText_(iAttributedText *d, int overrideBaseDir, iCh
                                                                     monospace_FontId));
                     }
                     else if (equal_Rangecc(sequence, "0")) {
+                        run.attrib.regular = iFalse;
                         run.attrib.bold = iFalse;
+                        run.attrib.light = iFalse;
                         run.attrib.italic = iFalse;
                         run.attrib.monospace = iFalse;
                         attribFont = run.font = d->baseFont;
@@ -973,6 +995,7 @@ static void prepare_AttributedText_(iAttributedText *d, int overrideBaseDir, iCh
         pushBack_Array(&d->runs, &run);
     }
 #if 0
+    const int *logToVis = constData_Array(&d->logicalToVisual);
     printf("[AttributedText] %zu runs:\n", size_Array(&d->runs));
     iConstForEach(Array, i, &d->runs) {
         const iAttributedRun *run = i.value;
diff --git a/src/ui/text.h b/src/ui/text.h
index cb29adad..c8bb6f85 100644
--- a/src/ui/text.h
+++ b/src/ui/text.h
@@ -161,6 +161,7 @@ enum iAnsiFlag {
 void    setOpacity_Text         (float opacity);
 void    setBaseAttributes_Text  (int fontId, int fgColorId); /* current "normal" text attributes */
 void    setAnsiFlags_Text       (int ansiFlags);
+int     ansiFlags_Text          (void);
 
 void    cache_Text              (int fontId, iRangecc text); /* pre-render glyphs */
 
@@ -192,7 +193,9 @@ struct Impl_TextAttrib {
     int16_t fgColorId;
     int16_t bgColorId;
     struct {
+        uint16_t regular   : 1;
         uint16_t bold      : 1;
+        uint16_t light     : 1;
         uint16_t italic    : 1;
         uint16_t monospace : 1;
         uint16_t isBaseRTL : 1;