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Reimplement double-buffering 

Due to a merge-fuckup, the double-buffer-code got lost. Know flickering
should not happen anymore.
This commit is contained in:
Axel Wagner 2010-09-04 18:26:30 +02:00
parent 0963a0e5ac
commit 4e298d5a1d
1 changed files with 83 additions and 49 deletions
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84
i3bar/src/xcb.c
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@ -229,7 +229,7 @@ void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
switch (event->response_type & ~0x80) {
case XCB_EXPOSE:
/* Expose-events happen, when the window needs to be redrawn */
draw_bars();
redraw_bars();
break;
case XCB_BUTTON_PRESS:
/* Button-press-events are mouse-buttons clicked on one of our bars */
@ -483,7 +483,6 @@ void reconfig_windows() {
uint32_t mask;
uint32_t values[5];
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
i3_output *walk;
@ -499,6 +498,7 @@ void reconfig_windows() {
printf("Creating Window for output %s\n", walk->name);
walk->bar = xcb_generate_id(xcb_connection);
walk->buffer = xcb_generate_id(xcb_connection);
mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
/* Black background */
values[0] = xcb_screens->black_pixel;
@ -507,7 +507,7 @@ void reconfig_windows() {
/* The events we want to receive */
values[2] = XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_BUTTON_PRESS;
cookie = xcb_create_window_checked(xcb_connection,
xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection,
xcb_screens->root_depth,
walk->bar,
xcb_root,
@ -518,13 +518,16 @@ void reconfig_windows() {
xcb_screens->root_visual,
mask,
values);
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
printf("ERROR: Could not create Window. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
xcb_screens->root_depth,
walk->buffer,
walk->bar,
walk->rect.w,
walk->rect.h);
/* We want dock-windows (for now) */
xcb_change_property(xcb_connection,
xcb_void_cookie_t prop_cookie = xcb_change_property(xcb_connection,
XCB_PROP_MODE_REPLACE,
walk->bar,
atoms[_NET_WM_WINDOW_TYPE],
@ -532,30 +535,40 @@ void reconfig_windows() {
32,
1,
(unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
printf("ERROR: Could not set dock mode. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
/* We also want a graphics-context (the "canvas" on which we draw) */
walk->bargc = xcb_generate_id(xcb_connection);
mask = XCB_GC_FONT;
values[0] = xcb_font;
cookie = xcb_create_gc_checked(xcb_connection,
xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection,
walk->bargc,
walk->bar,
mask,
values);
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
/* We finally map the bar (display it on screen) */
xcb_void_cookie_t map_cookie = xcb_map_window_checked(xcb_connection, walk->bar);
if ((err = xcb_request_check(xcb_connection, win_cookie)) != NULL) {
printf("ERROR: Could not create Window. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
if ((err = xcb_request_check(xcb_connection, pm_cookie)) != NULL) {
printf("ERROR: Could not create Pixmap. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
if ((err = xcb_request_check(xcb_connection, prop_cookie)) != NULL) {
printf("ERROR: Could not set dock mode. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
if ((err = xcb_request_check(xcb_connection, gc_cookie)) != NULL) {
printf("ERROR: Could not create graphical context. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
/* We finally map the bar (display it on screen) */
cookie = xcb_map_window_checked(xcb_connection, walk->bar);
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
if ((err = xcb_request_check(xcb_connection, map_cookie)) != NULL) {
printf("ERROR: Could not map window. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
@ -572,12 +585,12 @@ void reconfig_windows() {
values[3] = font_height + 6;
values[4] = XCB_STACK_MODE_ABOVE;
printf("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
cookie = xcb_configure_window_checked(xcb_connection,
xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection,
walk->bar,
mask,
values);
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
if ((err = xcb_request_check(xcb_connection, cfg_cookie)) != NULL) {
printf("ERROR: Could not reconfigure window. XCB-errorcode: %d\n", err->error_code);
exit(EXIT_FAILURE);
}
@ -608,7 +621,7 @@ void draw_bars() {
&color);
xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font_height + 6 };
xcb_poly_fill_rectangle(xcb_connection,
outputs_walk->bar,
outputs_walk->buffer,
outputs_walk->bargc,
1,
&rect);
@ -630,7 +643,7 @@ void draw_bars() {
xcb_void_cookie_t cookie;
cookie = xcb_image_text_16(xcb_connection,
glyph_count,
outputs_walk->bar,
outputs_walk->buffer,
outputs_walk->bargc,
outputs_walk->rect.w - get_string_width(text, glyph_count) - 4,
font_height + 1,
@ -665,7 +678,7 @@ void draw_bars() {
&color);
xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font_height + 4 };
xcb_poly_fill_rectangle(xcb_connection,
outputs_walk->bar,
outputs_walk->buffer,
outputs_walk->bargc,
1,
&rect);
@ -676,13 +689,34 @@ void draw_bars() {
&color);
xcb_image_text_16(xcb_connection,
ws_walk->name_glyphs,
outputs_walk->bar,
outputs_walk->buffer,
outputs_walk->bargc,
i + 5, font_height + 1,
ws_walk->ucs2_name);
i += 10 + ws_walk->name_width;
}
redraw_bars();
i = 0;
}
}
/*
* Redraw the bars, i.e. simply copy the buffer to the barwindow
*
*/
void redraw_bars() {
i3_output *outputs_walk;
SLIST_FOREACH(outputs_walk, outputs, slist) {
xcb_copy_area(xcb_connection,
outputs_walk->buffer,
outputs_walk->bar,
outputs_walk->bargc,
0, 0,
0, 0,
outputs_walk->rect.w,
outputs_walk->rect.h);
xcb_flush(xcb_connection);
}
}