Use 32bit-deep drawables to allow setting a color with alpha channel as background
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0da5cdb447
6
i3lock.1
6
i3lock.1
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@ -108,9 +108,9 @@ You can also use it to resize images to the screen ratio:
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Note that $(xdpyinfo | grep dimensions | sed -r 's/^[^0-9]*([0-9]+x[0-9]+).*$/\1/') gets you the current screen dimensions in the wxh (e.g. 1920x1080) format.
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.TP
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.BI \-c\ rrggbb \fR,\ \fB\-\-color= rrggbb
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Turn the screen into the given color instead of white. Color must be given in 3-byte
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format: rrggbb (i.e. ff0000 is red).
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.BI \-c\ rrggbbaa \fR,\ \fB\-\-color= rrggbbaa
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Turn the screen into the given color instead of white. Color must be given in 4-byte
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format: rrggbbaa (i.e. ff0000ff is opaque red).
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.TP
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.B \-t, \-\-tiling
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41
i3lock.c
41
i3lock.c
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@ -70,7 +70,7 @@
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typedef void (*ev_callback_t)(EV_P_ ev_timer *w, int revents);
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static void input_done(void);
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char color[7] = "ffffff";
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char color[9] = "ffffffff";
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/* options for unlock indicator colors */
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char insidevercolor[9] = "006effbf";
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@ -1497,6 +1497,13 @@ int main(int argc, char *argv[]) {
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char *optstring = "hvnbdc:p:ui:teI:frsS:kB:m";
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char *arg = NULL;
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int opt = 0;
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#define parse_color(acolor)\
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arg = optarg;\
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if (arg[0] == '#') arg++;\
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if (strlen(arg) != 8 || sscanf(arg, "%08[0-9a-fA-F]", acolor) != 1)\
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errx(1, #acolor " is invalid, color must be given in 4-byte format: rrggbbaa\n");
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while ((o = getopt_long(argc, argv, optstring, longopts, &longoptind)) != -1) {
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switch (o) {
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case 'v':
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@ -1514,18 +1521,6 @@ int main(int argc, char *argv[]) {
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fprintf(stderr, "Inactivity timeout only makes sense with DPMS, which was removed. Please see the manpage i3lock(1).\n");
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break;
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}
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case 'c': {
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arg = optarg;
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/* Skip # if present */
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if (arg[0] == '#')
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arg++;
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if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
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errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb");
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break;
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}
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case 'u':
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unlock_indicator = false;
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break;
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@ -1575,11 +1570,9 @@ int main(int argc, char *argv[]) {
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break;
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// Begin colors
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#define parse_color(color)\
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arg = optarg;\
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if (arg[0] == '#') arg++;\
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if (strlen(arg) != 8 || sscanf(arg, "%08[0-9a-fA-F]", color) != 1)\
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errx(1, #color " is invalid, color must be given in 4-byte format: rrggbbaa\n");
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case 'c':
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parse_color(color);
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break;
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case 300:
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parse_color(insidevercolor);
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break;
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@ -2206,14 +2199,16 @@ int main(int argc, char *argv[]) {
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cairo_surface_destroy(xcb_img);
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}
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/* Pixmap on which the image is rendered to (if any) */
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xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
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xcb_window_t stolen_focus = find_focused_window(conn, screen->root);
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/* Open the fullscreen window, already with the correct pixmap in place */
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win = open_fullscreen_window(conn, screen, color, bg_pixmap);
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xcb_free_pixmap(conn, bg_pixmap);
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win = open_fullscreen_window(conn, screen, color);
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xcb_pixmap_t pixmap = create_bg_pixmap(conn, win, last_resolution, color);
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draw_image(last_resolution, pixmap);
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xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[]){pixmap});
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xcb_free_pixmap(conn, pixmap);
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if (blur_pixmap) {
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xcb_free_pixmap(conn, *blur_pixmap);
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free(blur_pixmap);
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@ -71,7 +71,7 @@ unsigned long lastCheck;
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/* Whether the image should be tiled. */
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extern bool tile;
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/* The background color to use (in hex). */
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extern char color[7];
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extern char color[9];
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/* indicator color options */
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extern char insidevercolor[9];
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extern char insidewrongcolor[9];
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@ -675,7 +675,7 @@ static void draw_elements(cairo_t *const ctx, DrawData const *const draw_data) {
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* resolution and returns it.
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*
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*/
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xcb_pixmap_t draw_image(uint32_t *resolution) {
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void draw_image(uint32_t *resolution, xcb_drawable_t drawable) {
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const double scaling_factor = get_dpi_value() / 96.0;
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xcb_pixmap_t bg_pixmap = XCB_NONE;
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int button_diameter_physical = ceil(scaling_factor * BUTTON_DIAMETER);
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@ -683,7 +683,7 @@ xcb_pixmap_t draw_image(uint32_t *resolution) {
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scaling_factor, button_diameter_physical);
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if (!vistype)
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vistype = get_root_visual_type(screen);
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vistype = get_visualtype_by_depth(32, screen);
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bg_pixmap = create_bg_pixmap(conn, screen, resolution, color);
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/* Initialize cairo: Create one in-memory surface to render the unlock
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* indicator on, create one XCB surface to actually draw (one or more,
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@ -696,7 +696,7 @@ xcb_pixmap_t draw_image(uint32_t *resolution) {
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// cairo_set_font_face(ctx, get_font_face(0));
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cairo_surface_t *xcb_output = cairo_xcb_surface_create(conn, bg_pixmap, vistype, resolution[0], resolution[1]);
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cairo_surface_t *xcb_output = cairo_xcb_surface_create(conn, drawable, vistype, resolution[0], resolution[1]);
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cairo_t *xcb_ctx = cairo_create(xcb_output);
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/*update image according to the slideshow_interval*/
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@ -1073,12 +1073,11 @@ xcb_pixmap_t draw_image(uint32_t *resolution) {
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*/
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void redraw_screen(void) {
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DEBUG("redraw_screen(unlock_state = %d, auth_state = %d) @ [%lu]\n", unlock_state, auth_state, (unsigned long)time(NULL));
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xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
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xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){bg_pixmap});
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/* XXX: Possible optimization: Only update the area in the middle of the
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* screen instead of the whole screen. */
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xcb_pixmap_t pixmap = create_bg_pixmap(conn, win, last_resolution, color);
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draw_image(last_resolution, pixmap);
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xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){pixmap});
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xcb_clear_area(conn, 0, win, 0, 0, last_resolution[0], last_resolution[1]);
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xcb_free_pixmap(conn, bg_pixmap);
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xcb_free_pixmap(conn, pixmap);
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xcb_flush(conn);
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}
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@ -38,7 +38,7 @@ typedef struct {
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double bar_offset;
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} DrawData;
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xcb_pixmap_t draw_image(uint32_t* resolution);
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void draw_image(uint32_t* resolution, xcb_drawable_t drawable);
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void init_colors_once(void);
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void redraw_screen(void);
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void clear_indicator(void);
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64
xcb.c
64
xcb.c
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@ -82,16 +82,37 @@ static unsigned char mask_windows_bits[] = {
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0x80, 0x01};
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static uint32_t get_colorpixel(char *hex) {
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char strgroups[3][3] = {{hex[0], hex[1], '\0'},
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char strgroups[4][3] = {{hex[0], hex[1], '\0'},
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{hex[2], hex[3], '\0'},
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{hex[4], hex[5], '\0'}};
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uint32_t rgb16[3] = {(strtol(strgroups[0], NULL, 16)),
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{hex[4], hex[5], '\0'},
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{hex[6], hex[4], '\0'}};
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uint32_t rgb16[4] = {(strtol(strgroups[0], NULL, 16)),
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(strtol(strgroups[1], NULL, 16)),
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(strtol(strgroups[2], NULL, 16))};
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(strtol(strgroups[2], NULL, 16)),
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(strtol(strgroups[3], NULL, 16))};
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return (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2];
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return (rgb16[3] << 24) + (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2];
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}
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xcb_visualtype_t *get_visualtype_by_depth(uint16_t depth, xcb_screen_t *root_screen) {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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if (depth_iter.data->depth != depth)
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continue;
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xcb_visualtype_iterator_t visual_iter;
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visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
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if (!visual_iter.rem)
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continue;
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return visual_iter.data;
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}
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return NULL;
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}
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xcb_visualtype_t *get_root_visual_type(xcb_screen_t *screen) {
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xcb_visualtype_t *visual_type = NULL;
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xcb_depth_iterator_t depth_iter;
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@ -114,10 +135,9 @@ xcb_visualtype_t *get_root_visual_type(xcb_screen_t *screen) {
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return NULL;
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}
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xcb_pixmap_t create_bg_pixmap(xcb_connection_t *conn, xcb_screen_t *scr, u_int32_t *resolution, char *color) {
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xcb_pixmap_t create_bg_pixmap(xcb_connection_t *conn, xcb_drawable_t win, u_int32_t *resolution, char *color) {
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xcb_pixmap_t bg_pixmap = xcb_generate_id(conn);
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xcb_create_pixmap(conn, scr->root_depth, bg_pixmap, scr->root,
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resolution[0], resolution[1]);
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xcb_create_pixmap(conn, 32, bg_pixmap, win, resolution[0], resolution[1]);
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/* Generate a Graphics Context and fill the pixmap with background color
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* (for images that are smaller than your screen) */
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@ -131,9 +151,9 @@ xcb_pixmap_t create_bg_pixmap(xcb_connection_t *conn, xcb_screen_t *scr, u_int32
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return bg_pixmap;
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}
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xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, char *color, xcb_pixmap_t pixmap) {
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xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, char *color) {
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uint32_t mask = 0;
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uint32_t values[3];
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uint32_t values[5];
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xcb_window_t win = xcb_generate_id(conn);
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xcb_window_t parent_win = scr->root;
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@ -161,26 +181,32 @@ xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, c
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}
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}
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if (pixmap == XCB_NONE) {
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xcb_visualid_t visual = get_visualtype_by_depth(32, scr)->visual_id;
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xcb_colormap_t win_colormap = xcb_generate_id(conn);
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xcb_create_colormap(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, scr->root, visual);
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mask |= XCB_CW_BACK_PIXEL;
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values[0] = get_colorpixel(color);
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} else {
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mask |= XCB_CW_BACK_PIXMAP;
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values[0] = pixmap;
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}
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mask |= XCB_CW_BORDER_PIXEL;
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values[1] = 0x00000000;
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[1] = 1;
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values[2] = 1;
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mask |= XCB_CW_EVENT_MASK;
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values[2] = XCB_EVENT_MASK_EXPOSURE |
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values[3] = XCB_EVENT_MASK_EXPOSURE |
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XCB_EVENT_MASK_KEY_PRESS |
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XCB_EVENT_MASK_KEY_RELEASE |
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XCB_EVENT_MASK_VISIBILITY_CHANGE |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY;
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mask |= XCB_CW_COLORMAP;
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values[4] = win_colormap;
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xcb_create_window(conn,
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XCB_COPY_FROM_PARENT,
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32,
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win, /* the window id */
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parent_win,
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0, 0,
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scr->height_in_pixels, /* dimensions */
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0, /* border = 0, we draw our own */
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
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visual, /* copy visual from parent */
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mask,
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values);
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5
xcb.h
5
xcb.h
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@ -24,8 +24,9 @@ extern xcb_connection_t *conn;
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extern xcb_screen_t *screen;
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xcb_visualtype_t *get_root_visual_type(xcb_screen_t *s);
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xcb_pixmap_t create_bg_pixmap(xcb_connection_t *conn, xcb_screen_t *scr, u_int32_t *resolution, char *color);
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xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, char *color, xcb_pixmap_t pixmap);
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xcb_visualtype_t* get_visualtype_by_depth(uint16_t depth, xcb_screen_t* root_screen);
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xcb_pixmap_t create_bg_pixmap(xcb_connection_t *conn, xcb_drawable_t drawable, u_int32_t *resolution, char *color);
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xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, char *color);
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bool grab_pointer_and_keyboard(xcb_connection_t *conn, xcb_screen_t *screen, xcb_cursor_t cursor, int tries);
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xcb_cursor_t create_cursor(xcb_connection_t *conn, xcb_screen_t *screen, xcb_window_t win, int choice);
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xcb_window_t find_focused_window(xcb_connection_t *conn, const xcb_window_t root);
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