st

fork of suckless's simple terminal
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commit ee858b4805aec3e12bff48cf27433ebcd3f6ac34
parent 80f70f1c224ec6fb10f04c29ea2205f47ae553ff
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Tue, 31 Aug 2010 15:36:13 +0200

use one global struct instead of many vars for selection. Cleanup.

Diffstat:
Mst.c | 74++++++++++++++++++++++++++++++++++++++------------------------------------
1 file changed, 38 insertions(+), 36 deletions(-)
diff --git a/st.c b/st.c
@@ -125,6 +125,14 @@ typedef struct {
     GC gc;
 } DC;
 
+typedef struct {
+    int mode;
+    int bx, by;
+    int ex, ey;
+    int b[2], e[2];
+    char *clip;
+} Selection;
+
 #include "config.h"
 
 static void die(const char *errstr, ...);
@@ -200,23 +208,18 @@ static Term term;
 static CSIEscape escseq;
 static int cmdfd;
 static pid_t pid;
+static Selection sel;
 
-/* selection */
-// TODO: use X11 clipboard
-static int selmode = 0;
-static int selbx = -1, selby;
-static int selex, seley;
-int sb[2], se[2];
-static const char *clipboard = NULL;
+/* TODO: use X11 clipboard */
 
 static inline int selected(int x, int y) {
-    if ((seley==y && selby==y)) {
-        int bx = MIN(selbx, selex);
-        int ex = MAX(selbx, selex);
+    if ((sel.ey==y && sel.by==y)) {
+        int bx = MIN(sel.bx, sel.ex);
+        int ex = MAX(sel.bx, sel.ex);
         return (x>=bx && x<=ex);
     }
-    return (((y>sb[1] && y<se[1]) || (y==se[1] && x<=se[0])) || \
-        (y==sb[1] && x>=sb[0] && (x<=se[0] || sb[1]!=se[1])));
+    return (((y>sel.b[1] && y<sel.e[1]) || (y==sel.e[1] && x<=sel.e[0])) || \
+        (y==sel.b[1] && x>=sel.b[0] && (x<=sel.e[0] || sel.b[1]!=sel.e[1])));
 }
 
 static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
@@ -224,24 +227,24 @@ static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
         *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
     *x = e->xbutton.x/xw.cw;
     *y = e->xbutton.y/xw.ch;
-    sb[0] = selby<seley?selbx:selex;
-    sb[1] = MIN(selby, seley);
-    se[0] = selby<seley?selex:selbx;
-    se[1] = MAX(selby, seley);
+    sel.b[0] = sel.by<sel.ey?sel.bx:sel.ex;
+    sel.b[1] = MIN(sel.by, sel.ey);
+    sel.e[0] = sel.by<sel.ey?sel.ex:sel.bx;
+    sel.e[1] = MAX(sel.by, sel.ey);
 }
 
 static void bpress(XEvent *e) {
-    selmode = 1;
-    selex = selbx = e->xbutton.x/xw.cw;
-    seley = selby = e->xbutton.y/xw.ch;
+    sel.mode = 1;
+    sel.ex = sel.bx = e->xbutton.x/xw.cw;
+    sel.ey = sel.by = e->xbutton.y/xw.ch;
 }
 
 static char *getseltext() {
     char *str, *ptr;
     int ls, x, y, sz;
-    if(selbx==-1)
+    if(sel.bx==-1)
         return NULL;
-    sz = ((xw.w/xw.ch) * (se[1]-sb[1]+2));
+    sz = ((xw.w/xw.ch) * (sel.e[1]-sel.b[1]+2));
     ptr = str = malloc (sz);
     for(y = 0; y < term.row; y++) {
         for(x = 0; x < term.col; x++) {
@@ -259,29 +262,29 @@ static char *getseltext() {
     return str;
 }
 
-static void clipboard_copy(const char *str) {
-    free((void *)clipboard);
-    clipboard = str;
+static void clipboard_copy(char *str) {
+    free(sel.clip);
+    sel.clip = str;
 }
 
 static void clipboard_paste() {
-    if(clipboard)
-        ttywrite(clipboard, strlen(clipboard));
+    if(sel.clip)
+        ttywrite(sel.clip, strlen(sel.clip));
 }
 
 // TODO: doubleclick to select word
 static void brelease(XEvent *e) {
     int b;
-    selmode = 0;
-    getbuttoninfo(e, &b, &selex, &seley);
+    sel.mode = 0;
+    getbuttoninfo(e, &b, &sel.ex, &sel.ey);
     if(b==4)
         tscrollup(1);
     else
     if(b==5)
         tscrolldown(1);
     else
-    if(selbx==selex && selby==seley) {
-        selbx = -1;
+    if(sel.bx==sel.ex && sel.by==sel.ey) {
+        sel.bx = -1;
         if(b==2)
             clipboard_paste();
     } else {
@@ -292,8 +295,8 @@ static void brelease(XEvent *e) {
 }
 
 static void bmotion(XEvent *e) {
-    if (selmode) {
-        getbuttoninfo(e, NULL, &selex, &seley);
+    if (sel.mode) {
+        getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
         draw(1);
     }
 }
@@ -784,7 +787,6 @@ csihandle(void) {
         case 2: /* all */
             tclearregion(0, 0, term.col-1, term.row-1);
             break;
-        case 3: /* XXX: erase saved lines (xterm) */
         default:
             goto unknown;
         }
@@ -1025,7 +1027,7 @@ tputc(char c) {
                 term.mode &= ~MODE_APPKEYPAD;
                 term.esc = 0;
                 break;
-            case '7': /* DECSC -- Save Cursor*/
+            case '7': /* DECSC -- Save Cursor */
                 tcursor(CURSOR_SAVE);
                 term.esc = 0;
                 break;
@@ -1096,7 +1098,7 @@ tresize(int col, int row) {
 
     /* resize to new height */
     term.line = realloc(term.line, row * sizeof(Line));
-    term.alt = realloc(term.alt,  row * sizeof(Line));
+    term.alt  = realloc(term.alt,  row * sizeof(Line));
 
     /* resize each row to new width, zero-pad if needed */
     for(i = 0; i < minrow; i++) {
@@ -1312,7 +1314,7 @@ draw(int redraw_all) {
         i = ox = 0;
         for(x = 0; x < term.col; x++) {
             new = term.line[y][x];
-            if(selbx!=-1 && new.c && selected(x, y))
+            if(sel.bx!=-1 && new.c && selected(x, y))
                 new.mode ^= ATTR_REVERSE;
             if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
                     i >= DRAW_BUF_SIZ)) {