don't draw if the window is not visible.

[st.git] / st.c

diff --git a/st.c b/st.c
index 9e66d09..c9d0fb8 100644 (file)
--- a/st.c
+++ b/st.c
@@ -104,6 +104,7 @@ typedef struct {
 /* Purely graphic info */
 typedef struct {
        Display* dis;
+       Colormap cmap;
        Window win;
        Pixmap buf;
        int scr;
@@ -114,6 +115,7 @@ typedef struct {
        int ch; /* char height */
        int cw; /* char width  */
        int hasfocus;
+       int vis; /* is visible */
 } XWindow; 
 
 typedef struct {
@@ -186,6 +188,8 @@ static void xloadcols(void);
 static void xseturgency(int);
 
 static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
 static char* kmap(KeySym);
 static void kpress(XEvent *);
 static void resize(XEvent *);
@@ -197,8 +201,10 @@ static void bmotion(XEvent *);
 
 static void (*handler[LASTEvent])(XEvent *) = {
        [KeyPress] = kpress,
-       [Expose] = expose,
        [ConfigureNotify] = resize,
+       [VisibilityNotify] = visibility,
+       [UnmapNotify] = unmap,
+       [Expose] = expose,
        [FocusIn] = focus,
        [FocusOut] = focus,
        [MotionNotify] = bmotion,
@@ -796,6 +802,8 @@ csihandle(void) {
                        case 1:
                                term.mode &= ~MODE_APPKEYPAD;
                                break;
+                       case 5: /* TODO: DECSCNM -- Remove reverse video */
+                               break;
                        case 7:
                                term.mode &= ~MODE_WRAP;
                                break;
@@ -851,11 +859,16 @@ csihandle(void) {
                        case 1:
                                term.mode |= MODE_APPKEYPAD;
                                break;
+                       case 5: /* DECSCNM -- Reverve video */
+                               /* TODO: set REVERSE on the whole screen (f) */
+                               break;
                        case 7:
                                term.mode |= MODE_WRAP;
                                break;
                        case 12: /* att610 -- Start blinking cursor (IGNORED) */
-                               break;
+                                /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
+                               if(escseq.narg > 1 && escseq.arg[1] != 25)
+                                       break;
                        case 25:
                                term.c.state &= ~CURSOR_HIDE;
                                break;
@@ -1114,11 +1127,10 @@ void
 xloadcols(void) {
        int i, r, g, b;
        XColor color;
-       Colormap cmap = DefaultColormap(xw.dis, xw.scr);
        unsigned long white = WhitePixel(xw.dis, xw.scr);
 
        for(i = 0; i < 16; i++) {
-               if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
+               if (!XAllocNamedColor(xw.dis, xw.cmap, colorname[i], &color, &color)) {
                        dc.col[i] = white;
                        fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
                } else
@@ -1132,7 +1144,7 @@ xloadcols(void) {
                                color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
                                color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
                                color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
-                               if (!XAllocColor(xw.dis, cmap, &color)) {
+                               if (!XAllocColor(xw.dis, xw.cmap, &color)) {
                                        dc.col[i] = white;
                                        fprintf(stderr, "Could not allocate color %d\n", i);
                                } else
@@ -1142,7 +1154,7 @@ xloadcols(void) {
 
        for(r = 0; r < 24; r++, i++) {
                color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
-               if (!XAllocColor(xw.dis, cmap, &color)) {
+               if (!XAllocColor(xw.dis, xw.cmap, &color)) {
                        dc.col[i] = white;
                        fprintf(stderr, "Could not allocate color %d\n", i);
                } else
@@ -1177,6 +1189,8 @@ xhints(void)
 
 void
 xinit(void) {
+       XSetWindowAttributes attrs;
+
        if(!(xw.dis = XOpenDisplay(NULL)))
                die("Can't open display\n");
        xw.scr = XDefaultScreen(xw.dis);
@@ -1190,25 +1204,32 @@ xinit(void) {
        xw.ch = dc.font->ascent + dc.font->descent;
 
        /* colors */
+       xw.cmap = XDefaultColormap(xw.dis, xw.scr);
        xloadcols();
 
-       /* windows */
-       xw.bufh = term.row * xw.ch;
-       xw.bufw = term.col * xw.cw;
+       /* window - default size */
+       xw.bufh = 24 * xw.ch;
+       xw.bufw = 80 * xw.cw;
        xw.h = xw.bufh + 2*BORDER;
        xw.w = xw.bufw + 2*BORDER;
-       xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
-                       xw.w, xw.h, 0,
-                       dc.col[DefaultBG],
-                       dc.col[DefaultBG]);
+
+       attrs.background_pixel = dc.col[DefaultBG];
+       attrs.border_pixel = dc.col[DefaultBG];
+       attrs.bit_gravity = NorthWestGravity;
+       attrs.event_mask = FocusChangeMask | KeyPressMask
+               | ExposureMask | VisibilityChangeMask | StructureNotifyMask
+               | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
+       attrs.colormap = xw.cmap;
+
+       xw.win = XCreateWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
+                       xw.w, xw.h, 0, XDefaultDepth(xw.dis, xw.scr), InputOutput,
+                       XDefaultVisual(xw.dis, xw.scr),
+                       CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
+                       | CWColormap,
+                       &attrs);
        xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
        /* gc */
        dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
-
-       /* event mask */
-       XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
-               | StructureNotifyMask | FocusChangeMask | PointerMotionMask
-               | ButtonPressMask | ButtonReleaseMask);
        
        XMapWindow(xw.dis, xw.win);
        xhints();
@@ -1305,8 +1326,10 @@ draw(int redraw_all) {
        Glyph base, new;
        char buf[DRAW_BUF_SIZ];
 
-       XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
-       XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
+       if(!xw.vis)
+               return;
+
+       xclear(0, 0, term.col-1, term.row-1);
        for(y = 0; y < term.row; y++) {
                base = term.line[y][0];
                i = ox = 0;
@@ -1342,6 +1365,19 @@ expose(XEvent *ev) {
        draw(SCREEN_REDRAW);
 }
 
+void
+visibility(XEvent *ev) {
+       XVisibilityEvent *e = &ev->xvisibility;
+       /* XXX if this goes from 0 to 1, need a full redraw for next Expose,
+        * not just a buf copy */
+       xw.vis = e->state != VisibilityFullyObscured;
+}
+
+void
+unmap(XEvent *ev) {
+       xw.vis = 0;
+}
+
 void
 xseturgency(int add) {
        XWMHints *h = XGetWMHints(xw.dis, xw.win);
@@ -1425,7 +1461,6 @@ resize(XEvent *e) {
        xw.bufw = MAX(1, xw.bufw);
        XFreePixmap(xw.dis, xw.buf);
        xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
-       draw(SCREEN_REDRAW);
 }
 
 void