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Migrate i3 rendering to cairo.

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This patch migrates all decoration rendering of i3 to cairo. Using the
compile switch CAIRO_SUPPORT, rendering can be switched back to the
previous XCB behavior, just like with the previous migration to cairo
in i3bar.

This patch also fixes a bug in draw_util.c where copying one surface
to another would use incorrect coordinates if the source coordinates
are not 0, 0.

Furthermore, this patch implicitly fixes some minor issues in the
decoration rendering which would be ignored previously due to the fact
that errors would only show up in the event queue, but not cause the
rendering code path to crash. One example is zero-height pixmaps which
are not allowed. Using cairo, these would cause i3 to instantly segfault,
so this patch avoids this.

Lastly, this patch annotates other issues found but not fixed in this patch
using TODO comments, e.g., the zero-height check not working correctly
and the comment that it should probably work the same way for zero-width
pixmaps.

relates to #1278
This commit is contained in:
Ingo Bürk
2015-11-16 21:26:06 +01:00
parent d9bbfb7b35
commit b665049883
11 changed files with 276 additions and 207 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/con.c
View File

@ -514,7 +514,7 @@ Con *con_by_window_id(xcb_window_t window) {
Con *con_by_frame_id(xcb_window_t frame) {
Con *con;
TAILQ_FOREACH(con, &all_cons, all_cons)
if (con->frame == frame)
if (con->frame.id == frame)
return con;
return NULL;
}

11
src/handlers.c
View File

@ -656,15 +656,14 @@ static void handle_expose_event(xcb_expose_event_t *event) {
return;
}
/* Since we render to our pixmap on every change anyways, expose events
/* Since we render to our surface on every change anyways, expose events
* only tell us that the X server lost (parts of) the window contents. We
* can handle that by copying the appropriate part from our pixmap to the
* can handle that by copying the appropriate part from our surface to the
* window. */
xcb_copy_area(conn, parent->pixmap, parent->frame, parent->pm_gc,
event->x, event->y, event->x, event->y,
event->width, event->height);
draw_util_copy_surface(conn, &(parent->frame_buffer), &(parent->frame),
event->x, event->y, event->x, event->y,
event->width, event->height);
xcb_flush(conn);
return;
}

2
src/main.c
View File

@ -60,6 +60,7 @@ xcb_window_t root;
* otherwise the root window’s default (usually 24 bit TrueColor). */
uint8_t root_depth;
xcb_visualid_t visual_id;
xcb_visualtype_t *visual_type;
xcb_colormap_t colormap;
struct ev_loop *main_loop;
@ -487,6 +488,7 @@ int main(int argc, char *argv[]) {
* transparency) and use it if so. */
root_depth = root_screen->root_depth;
visual_id = root_screen->root_visual;
visual_type = get_visualtype(root_screen);
colormap = root_screen->default_colormap;
DLOG("root_depth = %d, visual_id = 0x%08x.\n", root_depth, visual_id);

2
src/manage.c
View File

@ -473,7 +473,7 @@ void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cooki
values[0] = XCB_NONE;
xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame.id, 0, 0);
if (xcb_request_check(conn, rcookie) != NULL) {
LOG("Could not reparent the window, aborting\n");
goto geom_out;

315
src/x.c
View File

@ -144,10 +144,11 @@ void x_con_init(Con *con, uint16_t depth) {
}
Rect dims = {-15, -15, 10, 10};
con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
xcb_window_t frame_id = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
draw_util_surface_init(conn, &(con->frame), frame_id, get_visualtype_by_id(visual), dims.width, dims.height);
xcb_change_property(conn,
XCB_PROP_MODE_REPLACE,
con->frame,
con->frame.id,
XCB_ATOM_WM_CLASS,
XCB_ATOM_STRING,
8,
@ -158,7 +159,7 @@ void x_con_init(Con *con, uint16_t depth) {
xcb_free_colormap(conn, win_colormap);
struct con_state *state = scalloc(1, sizeof(struct con_state));
state->id = con->frame;
state->id = con->frame.id;
state->mapped = false;
state->initial = true;
DLOG("Adding window 0x%08x to lists\n", state->id);
@ -177,7 +178,7 @@ void x_con_init(Con *con, uint16_t depth) {
void x_reinit(Con *con) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
if ((state = state_for_frame(con->frame.id)) == NULL) {
ELOG("window state not found\n");
return;
}
@ -196,13 +197,13 @@ void x_reinit(Con *con) {
*/
void x_reparent_child(Con *con, Con *old) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
if ((state = state_for_frame(con->frame.id)) == NULL) {
ELOG("window state for con not found\n");
return;
}
state->need_reparent = true;
state->old_frame = old->frame;
state->old_frame = old->frame.id;
}
/*
@ -212,12 +213,12 @@ void x_reparent_child(Con *con, Con *old) {
void x_move_win(Con *src, Con *dest) {
struct con_state *state_src, *state_dest;
if ((state_src = state_for_frame(src->frame)) == NULL) {
if ((state_src = state_for_frame(src->frame.id)) == NULL) {
ELOG("window state for src not found\n");
return;
}
if ((state_dest = state_for_frame(dest->frame)) == NULL) {
if ((state_dest = state_for_frame(dest->frame.id)) == NULL) {
ELOG("window state for dest not found\n");
return;
}
@ -239,10 +240,11 @@ void x_move_win(Con *src, Con *dest) {
void x_con_kill(Con *con) {
con_state *state;
xcb_destroy_window(conn, con->frame);
xcb_free_pixmap(conn, con->pixmap);
xcb_free_gc(conn, con->pm_gc);
state = state_for_frame(con->frame);
draw_util_surface_free(conn, &(con->frame));
draw_util_surface_free(conn, &(con->frame_buffer));
xcb_destroy_window(conn, con->frame.id);
xcb_free_pixmap(conn, con->frame_buffer.id);
state = state_for_frame(con->frame.id);
CIRCLEQ_REMOVE(&state_head, state, state);
CIRCLEQ_REMOVE(&old_state_head, state, old_state);
TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
@ -312,6 +314,54 @@ void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
free(event);
}
static void x_draw_decoration_border(Con *con, struct deco_render_params *p) {
assert(con->parent != NULL);
Rect *dr = &(con->deco_rect);
adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
if (con->parent->layout == L_TABBED ||
(con->parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
deco_diff_l = 0;
deco_diff_r = 0;
}
draw_util_rectangle(conn, &(con->parent->frame_buffer), draw_util_colorpixel_to_color(p->color->border),
dr->x, dr->y, dr->width, 1);
draw_util_rectangle(conn, &(con->parent->frame_buffer), draw_util_colorpixel_to_color(p->color->border),
dr->x + deco_diff_l, dr->y + dr->height - 1, dr->width - (deco_diff_l + deco_diff_r), 1);
}
static void x_draw_decoration_after_title(Con *con, struct deco_render_params *p) {
assert(con->parent != NULL);
Rect *dr = &(con->deco_rect);
Rect br = con_border_style_rect(con);
/* Redraw the right border to cut off any text that went past it.
* This is necessary when the text was drawn using XCB since cutting text off
* automatically does not work there. For pango rendering, this isn't necessary. */
draw_util_rectangle(conn, &(con->parent->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
dr->x + dr->width + br.width, dr->y, -br.width, dr->height);
/* Draw a 1px separator line before and after every tab, so that tabs can
* be easily distinguished. */
if (con->parent->layout == L_TABBED) {
/* Left side */
draw_util_rectangle(conn, &(con->parent->frame_buffer), draw_util_colorpixel_to_color(p->color->border),
dr->x, dr->y, 1, dr->height);
/* Right side */
draw_util_rectangle(conn, &(con->parent->frame_buffer), draw_util_colorpixel_to_color(p->color->border),
dr->x + dr->width - 1, dr->y, 1, dr->height);
}
/* Redraw the border. */
x_draw_decoration_border(con, p);
}
/*
* Draws the decoration of the given container onto its parent.
*
@ -343,7 +393,7 @@ void x_draw_decoration(Con *con) {
/* Skip containers whose pixmap has not yet been created (can happen when
* decoration rendering happens recursively for a window for which
* x_push_node() was not yet called) */
if (leaf && con->pixmap == XCB_NONE)
if (leaf && con->frame_buffer.id == XCB_NONE)
return;
/* 1: build deco_params and compare with cache */
@ -395,29 +445,20 @@ void x_draw_decoration(Con *con) {
con->pixmap_recreated = false;
con->mark_changed = false;
/* 2: draw the client.background, but only for the parts around the client_rect */
/* 2: draw the client.background, but only for the parts around the window_rect */
if (con->window != NULL) {
xcb_rectangle_t background[] = {
/* top area */
{0, 0, r->width, w->y},
/* bottom area */
{0, (w->y + w->height), r->width, r->height - (w->y + w->height)},
/* left area */
{0, 0, w->x, r->height},
/* right area */
{w->x + w->width, 0, r->width - (w->x + w->width), r->height}};
#if 0
for (int i = 0; i < 4; i++)
DLOG("rect is (%d, %d) with %d x %d\n",
background[i].x,
background[i].y,
background[i].width,
background[i].height
);
#endif
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){config.client.background});
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
/* top area */
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(config.client.background),
0, 0, r->width, w->y);
/* bottom area */
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(config.client.background),
0, w->y + w->height, r->width, r->height - (w->y + w->height));
/* left area */
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(config.client.background),
0, 0, w->x, r->height);
/* right area */
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(config.client.background),
w->x + w->width, 0, r->width - (w->x + w->width), r->height);
}
/* 3: draw a rectangle in border color around the client */
@ -433,27 +474,26 @@ void x_draw_decoration(Con *con) {
DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
#endif
/* These rectangles represents the border around the child window
/* These rectangles represent the border around the child window
* (left, bottom and right part). We don’t just fill the whole
* rectangle because some childs are not freely resizable and we want
* their background color to "shine through". */
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
xcb_rectangle_t leftline = {0, 0, br.x, r->height};
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
0, 0, br.x, r->height);
}
if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
xcb_rectangle_t rightline = {r->width + (br.width + br.x), 0, -(br.width + br.x), r->height};
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
r->width + (br.width + br.x), 0, -(br.width + br.x), r->height);
}
if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
xcb_rectangle_t bottomline = {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)};
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y));
}
/* 1pixel border needs an additional line at the top */
/* pixel border needs an additional line at the top */
if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
xcb_rectangle_t topline = {br.x, 0, r->width + br.width, br.y};
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
br.x, 0, r->width + br.width, br.y);
}
/* Highlight the side of the border at which the next window will be
@ -463,13 +503,13 @@ void x_draw_decoration(Con *con) {
if (TAILQ_NEXT(con, nodes) == NULL &&
TAILQ_PREV(con, nodes_head, nodes) == NULL &&
con->parent->type != CT_FLOATING_CON) {
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->indicator});
if (p->parent_layout == L_SPLITH)
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
{r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height}});
else if (p->parent_layout == L_SPLITV)
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
{br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)}});
if (p->parent_layout == L_SPLITH) {
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->indicator),
r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height);
} else if (p->parent_layout == L_SPLITV) {
draw_util_rectangle(conn, &(con->frame_buffer), draw_util_colorpixel_to_color(p->color->indicator),
br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y));
}
}
}
@ -478,31 +518,19 @@ void x_draw_decoration(Con *con) {
if (p->border_style != BS_NORMAL)
goto copy_pixmaps;
/* If the parent hasn't been set up yet, skip the decoratin rendering
* for now. */
if (parent->frame_buffer.id == XCB_NONE)
goto copy_pixmaps;
/* 4: paint the bar */
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
xcb_rectangle_t drect = {con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height};
xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
draw_util_rectangle(conn, &(parent->frame_buffer), draw_util_colorpixel_to_color(p->color->background),
con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height);
/* 5: draw two unconnected horizontal lines in border color */
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
Rect *dr = &(con->deco_rect);
adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
if (parent->layout == L_TABBED ||
(parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
deco_diff_l = 0;
deco_diff_r = 0;
}
xcb_segment_t segments[] = {
{dr->x, dr->y,
dr->x + dr->width - 1, dr->y},
{dr->x + deco_diff_l, dr->y + dr->height - 1,
dr->x - deco_diff_r + dr->width - 1, dr->y + dr->height - 1}};
xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
x_draw_decoration_border(con, p);
/* 6: draw the title */
set_font_colors(parent->pm_gc, p->color->text, p->color->background);
int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
struct Window *win = con->window;
@ -510,16 +538,18 @@ void x_draw_decoration(Con *con) {
/* we have a split container which gets a representation
* of its children as title
*/
char *title;
char *_title;
char *tree = con_get_tree_representation(con);
sasprintf(&title, "i3: %s", tree);
sasprintf(&_title, "i3: %s", tree);
free(tree);
draw_text_ascii(title,
parent->pixmap, parent->pm_gc,
con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
con->deco_rect.width - 2);
free(title);
i3String *title = i3string_from_utf8(_title);
draw_util_text(title, &(parent->frame_buffer),
draw_util_colorpixel_to_color(p->color->text), draw_util_colorpixel_to_color(p->color->background),
con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
con->deco_rect.width - 2);
FREE(_title);
I3STRING_FREE(title);
goto after_title;
}
@ -565,9 +595,10 @@ void x_draw_decoration(Con *con) {
i3String *mark = i3string_from_utf8(formatted_mark);
mark_width = predict_text_width(mark);
draw_text(mark, parent->pixmap, parent->pm_gc, NULL,
con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
con->deco_rect.y + text_offset_y, mark_width);
draw_util_text(mark, &(parent->frame_buffer),
draw_util_colorpixel_to_color(p->color->text), draw_util_colorpixel_to_color(p->color->background),
con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
con->deco_rect.y + text_offset_y, mark_width);
I3STRING_FREE(mark);
}
@ -576,41 +607,17 @@ void x_draw_decoration(Con *con) {
}
i3String *title = win->title_format == NULL ? win->name : window_parse_title_format(win);
draw_text(title,
parent->pixmap, parent->pm_gc, NULL,
con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
draw_util_text(title, &(parent->frame_buffer),
draw_util_colorpixel_to_color(p->color->text), draw_util_colorpixel_to_color(p->color->background),
con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
if (win->title_format != NULL)
I3STRING_FREE(title);
after_title:
/* Since we don’t clip the text at all, it might in some cases be painted
* on the border pixels on the right side of a window. Therefore, we draw
* the right border again after rendering the text (and the unconnected
* lines in border color). */
/* Draw a 1px separator line before and after every tab, so that tabs can
* be easily distinguished. */
if (parent->layout == L_TABBED) {
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
} else {
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
}
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
(xcb_point_t[]){
{dr->x + dr->width, dr->y},
{dr->x + dr->width, dr->y + dr->height},
{dr->x + dr->width - 1, dr->y},
{dr->x + dr->width - 1, dr->y + dr->height},
{dr->x, dr->y + dr->height},
{dr->x, dr->y},
});
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
x_draw_decoration_after_title(con, p);
copy_pixmaps:
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
}
/*
@ -623,7 +630,7 @@ void x_deco_recurse(Con *con) {
Con *current;
bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
TAILQ_EMPTY(&(con->floating_head));
con_state *state = state_for_frame(con->frame);
con_state *state = state_for_frame(con->frame.id);
if (!leaf) {
TAILQ_FOREACH(current, &(con->nodes_head), nodes)
@ -632,8 +639,9 @@ void x_deco_recurse(Con *con) {
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
x_deco_recurse(current);
if (state->mapped)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
if (state->mapped) {
draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
}
}
if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
@ -650,7 +658,7 @@ static void set_hidden_state(Con *con) {
return;
}
con_state *state = state_for_frame(con->frame);
con_state *state = state_for_frame(con->frame.id);
bool should_be_hidden = con_is_hidden(con);
if (should_be_hidden == state->is_hidden)
return;
@ -678,12 +686,12 @@ void x_push_node(Con *con) {
Rect rect = con->rect;
//DLOG("Pushing changes for node %p / %s\n", con, con->name);
state = state_for_frame(con->frame);
state = state_for_frame(con->frame.id);
if (state->name != NULL) {
DLOG("pushing name %s for con %p\n", state->name, con);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame.id,
XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
FREE(state->name);
}
@ -716,7 +724,7 @@ void x_push_node(Con *con) {
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
xcb_reparent_window(conn, con->window->id, con->frame.id, 0, 0);
values[0] = FRAME_EVENT_MASK;
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
@ -741,8 +749,8 @@ void x_push_node(Con *con) {
bool fake_notify = false;
/* Set new position if rect changed (and if height > 0) or if the pixmap
* needs to be recreated */
if ((is_pixmap_needed && con->pixmap == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
rect.height > 0)) {
if ((is_pixmap_needed && con->frame_buffer.id == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
rect.height > 0)) {
/* We first create the new pixmap, then render to it, set it as the
* background and only afterwards change the window size. This reduces
* flickering. */
@ -755,38 +763,47 @@ void x_push_node(Con *con) {
/* Check if the container has an unneeded pixmap left over from
* previously having a border or titlebar. */
if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
xcb_free_pixmap(conn, con->pixmap);
con->pixmap = XCB_NONE;
if (!is_pixmap_needed && con->frame_buffer.id != XCB_NONE) {
draw_util_surface_free(conn, &(con->frame_buffer));
xcb_free_pixmap(conn, con->frame_buffer.id);
con->frame_buffer.id = XCB_NONE;
}
if (is_pixmap_needed && (has_rect_changed || con->pixmap == XCB_NONE)) {
if (con->pixmap == 0) {
con->pixmap = xcb_generate_id(conn);
con->pm_gc = xcb_generate_id(conn);
if (is_pixmap_needed && (has_rect_changed || con->frame_buffer.id == XCB_NONE)) {
if (con->frame_buffer.id == XCB_NONE) {
con->frame_buffer.id = xcb_generate_id(conn);
} else {
xcb_free_pixmap(conn, con->pixmap);
xcb_free_gc(conn, con->pm_gc);
draw_util_surface_free(conn, &(con->frame_buffer));
xcb_free_pixmap(conn, con->frame_buffer.id);
}
uint16_t win_depth = root_depth;
if (con->window)
win_depth = con->window->depth;
xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
/* Ensure we have valid dimensions for our surface. */
// TODO This is probably a bug in the condition above as we should never enter this path
// for height == 0. Also, we should probably handle width == 0 the same way.
int width = MAX(rect.width, 1);
int height = MAX(rect.height, 1);
xcb_create_pixmap_checked(conn, win_depth, con->frame_buffer.id, con->frame.id, width, height);
draw_util_surface_init(conn, &(con->frame_buffer), con->frame_buffer.id,
get_visualtype_by_id(get_visualid_by_depth(win_depth)), width, height);
/* For the graphics context, we disable GraphicsExposure events.
* Those will be sent when a CopyArea request cannot be fulfilled
* properly due to parts of the source being unmapped or otherwise
* unavailable. Since we always copy from pixmaps to windows, this
* is not a concern for us. */
uint32_t values[] = {0};
xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
xcb_change_gc(conn, con->frame_buffer.gc, XCB_GC_GRAPHICS_EXPOSURES, (uint32_t[]){0});
draw_util_surface_set_size(&(con->frame), width, height);
con->pixmap_recreated = true;
/* Don’t render the decoration for windows inside a stack which are
* not visible right now */
// TODO Should this work the same way for L_TABBED?
if (!con->parent ||
con->parent->layout != L_STACKED ||
TAILQ_FIRST(&(con->parent->focus_head)) == con)
@ -802,9 +819,10 @@ void x_push_node(Con *con) {
* window get lost when resizing it, therefore we want to provide it as
* fast as possible) */
xcb_flush(conn);
xcb_set_window_rect(conn, con->frame, rect);
if (con->pixmap != XCB_NONE)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
xcb_set_window_rect(conn, con->frame.id, rect);
if (con->frame_buffer.id != XCB_NONE) {
draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
}
xcb_flush(conn);
memcpy(&(state->rect), &rect, sizeof(Rect));
@ -848,17 +866,18 @@ void x_push_node(Con *con) {
state->child_mapped = true;
}
cookie = xcb_map_window(conn, con->frame);
cookie = xcb_map_window(conn, con->frame.id);
values[0] = FRAME_EVENT_MASK;
xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
xcb_change_window_attributes(conn, con->frame.id, XCB_CW_EVENT_MASK, values);
/* copy the pixmap contents to the frame window immediately after mapping */
if (con->pixmap != XCB_NONE)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
if (con->frame_buffer.id != XCB_NONE) {
draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
}
xcb_flush(conn);
DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
DLOG("mapping container %08x (serial %d)\n", con->frame.id, cookie.sequence);
state->mapped = con->mapped;
}
@ -892,7 +911,7 @@ static void x_push_node_unmaps(Con *con) {
con_state *state;
//DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
state = state_for_frame(con->frame);
state = state_for_frame(con->frame.id);
/* map/unmap if map state changed, also ensure that the child window
* is changed if we are mapped *and* in initial state (meaning the
@ -906,14 +925,14 @@ static void x_push_node_unmaps(Con *con) {
A_WM_STATE, A_WM_STATE, 32, 2, data);
}
cookie = xcb_unmap_window(conn, con->frame);
cookie = xcb_unmap_window(conn, con->frame.id);
DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
/* we need to increase ignore_unmap for this container (if it
* contains a window) and for every window "under" this one which
* contains a window */
if (con->window != NULL) {
con->ignore_unmap++;
DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame.id, con->ignore_unmap);
}
state->mapped = con->mapped;
}
@ -1067,7 +1086,7 @@ void x_push_changes(Con *con) {
x_deco_recurse(con);
xcb_window_t to_focus = focused->frame;
xcb_window_t to_focus = focused->frame.id;
if (focused->window != NULL)
to_focus = focused->window->id;
@ -1161,7 +1180,7 @@ void x_push_changes(Con *con) {
*/
void x_raise_con(Con *con) {
con_state *state;
state = state_for_frame(con->frame);
state = state_for_frame(con->frame.id);
//DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
CIRCLEQ_REMOVE(&state_head, state, state);
@ -1177,7 +1196,7 @@ void x_raise_con(Con *con) {
void x_set_name(Con *con, const char *name) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
if ((state = state_for_frame(con->frame.id)) == NULL) {
ELOG("window state not found\n");
return;
}

16
src/xcb.c
View File

@ -252,6 +252,22 @@ uint16_t get_visual_depth(xcb_visualid_t visual_id) {
}
return 0;
}
xcb_visualtype_t *get_visualtype_by_id(xcb_visualid_t visual_id) {
xcb_depth_iterator_t depth_iter;
depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
xcb_visualtype_iterator_t visual_iter;
visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
if (visual_id == visual_iter.data->visual_id) {
return visual_iter.data;
}
}
}
return 0;
}
/*
* Get visualid with specified depth