Move terminal-related selection logic into st.c

[st.git] / st.c

diff --git a/st.c b/st.c
index ea0726c..21cba9e 100644 (file)
--- a/st.c
+++ b/st.c
@@ -140,6 +140,7 @@ static void tscrollup(int, int);
 static void tscrolldown(int, int);
 static void tsetattr(int *, int);
 static void tsetchar(Rune, Glyph *, int, int);
+static void tsetdirt(int, int);
 static void tsetscroll(int, int);
 static void tswapscreen(void);
 static void tsetmode(int, int, int *, int);
@@ -384,6 +385,42 @@ tlinelen(int y)
        return i;
 }
 
+void
+selstart(int col, int row, int snap)
+{
+       selclear();
+       sel.mode = SEL_EMPTY;
+       sel.type = SEL_REGULAR;
+       sel.snap = snap;
+       sel.oe.x = sel.ob.x = col;
+       sel.oe.y = sel.ob.y = row;
+       selnormalize();
+
+       if (sel.snap != 0)
+               sel.mode = SEL_READY;
+       tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type)
+{
+       int oldey, oldex, oldsby, oldsey, oldtype;
+       oldey = sel.oe.y;
+       oldex = sel.oe.x;
+       oldsby = sel.nb.y;
+       oldsey = sel.ne.y;
+       oldtype = sel.type;
+
+       sel.alt = IS_SET(MODE_ALTSCREEN);
+       sel.oe.x = col;
+       sel.oe.y = row;
+       selnormalize();
+       sel.type = type;
+
+       if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type)
+               tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+}
+
 void
 selnormalize(void)
 {