diff options
Diffstat (limited to 'x11.c')
| -rw-r--r-- | x11.c | 559 |
1 files changed, 0 insertions, 559 deletions
@@ -1,559 +0,0 @@ -#include <glib.h> -#include <unistd.h> -#include <math.h> -#include <cairo.h> -#include <cairo-xcb.h> -#include <xcb/xcb.h> -#include <xcb/xproto.h> -#include <xcb/xcb_aux.h> -#include <xcb/xcb_icccm.h> -#include <xcb/xcb_ewmh.h> -#include <xcb/xcb_xrm.h> -#include <xcb/xcb_errors.h> -#include <xcb/randr.h> -#include <xcb/shape.h> - -#include "x11.h" -#include "log.h" - -// TODO: Event logic should be decoupled from Window logic -#include "draw.h" - -struct Window { - xcb_connection_t *connection; - xcb_screen_t *screen; - xcb_randr_screen_size_t *screen_size; - xcb_xrm_database_t *database; - xcb_errors_context_t *errors; - xcb_drawable_t window; - xcb_visualtype_t *visual_type; - xcb_ewmh_connection_t ewmh; - cairo_surface_t *surface; - cairo_t *cr; - double dpi; - int x, y; - int width, height; - GSource *source; -}; - -typedef struct { - GSource source; - Window *win; - xcb_generic_event_t *event; -} XcbSource; - -static gboolean xcb_source_check(GSource *source) -{ - XcbSource *xsource = (XcbSource *)source; - g_assert_null(xsource->event); - xsource->event = xcb_poll_for_event(xsource->win->connection); - return xsource->event != NULL; -} - -static gboolean xcb_source_dispatch(GSource *source, GSourceFunc callback, gpointer data) -{ - XcbSource *xsource = (XcbSource *)source; - g_assert_nonnull(xsource->event); - g_assert_nonnull(callback); - g_assert_nonnull(data); - - Window *win = (Window *)data; - - do { - switch (xsource->event->response_type & ~0x80) { - case 0: { - xcb_generic_error_t *error = (xcb_generic_error_t *)xsource->event; - - const char *extension; - const char *name = xcb_errors_get_name_for_error(win->errors, error->error_code, &extension); - const char *major = xcb_errors_get_name_for_major_code(win->errors, error->major_code); - const char *minor = xcb_errors_get_name_for_minor_code(win->errors, error->major_code, error->minor_code); - - // TODO: Handle errors instead of aborting - log_error("Xcb error '%s' [extension=%s, major=%s, minor=%s, resource=%u, sequence=%u]", - name, - extension ? extension : "none", - major, - minor ? minor : "none", - (unsigned int)error->resource_id, - (unsigned int)error->sequence); - break; - } - - case XCB_EXPOSE: { - xcb_expose_event_t *expose = (xcb_expose_event_t *)xsource->event; - log_debug("Processing event 'Expose' [type=%d]", XCB_EXPOSE); - - // Redraw - callback(data); - break; - } - - case XCB_BUTTON_RELEASE: { - log_debug("Mouse event"); - break; - } - - case XCB_PROPERTY_NOTIFY: { - xcb_property_notify_event_t *property = (xcb_property_notify_event_t *)xsource->event; - log_debug("Processing event 'PropertyNotify' [type=%d]", XCB_PROPERTY_NOTIFY); - - if (property->atom == XCB_ATOM_RESOURCE_MANAGER) { - window_update_scale(data); - - // Redraw - callback(data); - } - break; - } - - default: { - const char *extension; - const char *name = xcb_errors_get_name_for_xcb_event(win->errors, xsource->event, &extension); - - log_debug("Ignoring event '%s' [extension=%s, type=%d]", - name, - extension ? extension : "none", - xsource->event->response_type & 0x7f); - } - } - } while ((xsource->event = xcb_poll_for_event(xsource->win->connection)) != NULL); - - return G_SOURCE_CONTINUE; -} - -static void xcb_source_finalize(GSource *source) -{ - log_debug("Xcb event loop finalized"); -} - -static GSourceFuncs source_fns = { - NULL, - xcb_source_check, - xcb_source_dispatch, - xcb_source_finalize, -}; - -static void attach_source(Window *win) -{ - XcbSource *source = (XcbSource *)g_source_new(&source_fns, sizeof(XcbSource)); - source->win = win; - source->event = NULL; - - win->source = (GSource *)source; - g_source_set_static_name(win->source, "XcbSource"); - - // TODO: Draw should be decoupled from this file - g_source_set_callback(win->source, G_SOURCE_FUNC(draw), win, NULL); - - g_source_add_unix_fd(win->source, xcb_get_file_descriptor(win->connection), G_IO_IN | G_IO_HUP | G_IO_ERR); - g_source_attach(win->source, NULL); -} - -static bool query_xrm(Window *win, const char *res, char **value) -{ - if (xcb_xrm_resource_get_string(win->database,res, res, value) >= 0) { - log_debug("Xrm query '%s' found '%s'", res, *value); - return true; - } - - log_debug("Xrm query '%s' not found", res); - return false; -} - -static xcb_atom_t intern_atom(Window *win, const char *atom) -{ - xcb_generic_error_t *error; - xcb_intern_atom_cookie_t cookie = xcb_intern_atom(win->connection, false, strlen(atom), atom); - xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(win->connection, cookie, &error); - - g_assert_null(error); - xcb_atom_t id = reply->atom; - g_free(reply); - return id; -} - -static void wm_set_size(Window *win) -{ - xcb_size_hints_t hints; - xcb_icccm_size_hints_set_size(&hints, false, win->width, win->height); - xcb_icccm_size_hints_set_min_size(&hints, win->width, win->height); - xcb_icccm_size_hints_set_max_size(&hints, win->width, win->height); - xcb_icccm_size_hints_set_base_size(&hints, win->width, win->height); - xcb_icccm_size_hints_set_position(&hints, false, win->x, win->y); - - xcb_icccm_set_wm_size_hints(win->connection, win->window, XCB_ATOM_WM_NORMAL_HINTS, &hints); - log_debug("Xcb icccm updated size hints"); -} - -static void wm_set_struts(Window *win) -{ - const uint32_t end = MAX(0, win->x + win->width - 1); - - const uint32_t values[12] = { - 0, 0, win->height, 0, // left, right, top, bottom - 0, 0, 0, 0, // left y0, left y1, right y0, right y1 - win->x, end, 0, 0, // top y0, top y1, bottom y0, bottom y1 - }; - - xcb_change_property(win->connection, - XCB_PROP_MODE_REPLACE, - win->window, - win->ewmh._NET_WM_STRUT, - XCB_ATOM_CARDINAL, - 32, - 4, - values); - - xcb_change_property(win->connection, - XCB_PROP_MODE_REPLACE, - win->window, - win->ewmh._NET_WM_STRUT_PARTIAL, - XCB_ATOM_CARDINAL, - 32, - 12, - values); - - log_debug("Xcb ewmh struts updated"); -} - -static void wm_setup(Window *win) -{ - const char *title = "comet"; - xcb_icccm_set_wm_name(win->connection, win->window, XCB_ATOM_STRING, 8, strlen(title), title); - log_debug("Window updated title [%s]", title); - - const char class[] = "comet\0Comet"; - xcb_icccm_set_wm_class(win->connection, win->window, strlen(class), class); - log_debug("Window updated class [%s]", "comet\\0Comet"); - - xcb_generic_error_t *error; - xcb_intern_atom_cookie_t *ewmh_cookie = xcb_ewmh_init_atoms(win->connection, &win->ewmh); - - g_assert_true(xcb_ewmh_init_atoms_replies(&win->ewmh, ewmh_cookie, &error)); - g_assert_null(error); - log_debug("Xcb ewmh connected"); - - xcb_ewmh_set_wm_window_type(&win->ewmh, win->window, 1, &win->ewmh._NET_WM_WINDOW_TYPE_DOCK); - - xcb_atom_t state[] = { - win->ewmh._NET_WM_STATE_STICKY, - win->ewmh._NET_WM_STATE_ABOVE - }; - xcb_ewmh_set_wm_state(&win->ewmh, win->window, G_N_ELEMENTS(state), state); - - xcb_ewmh_set_wm_desktop(&win->ewmh, win->window, 0xFFFFFFFF); - - xcb_ewmh_set_wm_pid(&win->ewmh, win->window, getpid()); - - wm_set_size(win); - - wm_set_struts(win); -} - -Window *window_create(void) -{ - Window *win = g_malloc0(sizeof(Window)); - - int preferred_screen = 0; - win->connection = xcb_connect(NULL, &preferred_screen); - g_assert_true(win->connection != NULL && !xcb_connection_has_error(win->connection)); - log_debug("Xcb connected"); - - xcb_screen_iterator_t iter = xcb_setup_roots_iterator(xcb_get_setup(win->connection)); - log_debug("Default screen %d", preferred_screen); - - while (preferred_screen != 0 && iter.rem) { - xcb_screen_next(&iter); - preferred_screen--; - } - - win->screen = iter.data; - - xcb_randr_query_version_cookie_t version_cookie = xcb_randr_query_version(win->connection, - XCB_RANDR_MAJOR_VERSION, - XCB_RANDR_MINOR_VERSION); - - xcb_generic_error_t *error; - xcb_randr_query_version_reply_t *randr_version = xcb_randr_query_version_reply(win->connection, - version_cookie, - &error); - - g_assert_null(error); - log_debug("RandR loaded [version=%d.%d]", randr_version->major_version, randr_version->minor_version); - g_assert_cmpint(randr_version->major_version, >=, 1); - - xcb_randr_get_screen_info_cookie_t cookie = xcb_randr_get_screen_info(win->connection, win->screen->root); - xcb_randr_get_screen_info_reply_t *info_reply = xcb_randr_get_screen_info_reply(win->connection, cookie, &error); - g_assert_null(error); - - win->screen_size = xcb_randr_get_screen_info_sizes(info_reply); - g_assert_nonnull(win->screen_size); - log_debug("Screen size [width=%d, height=%d]", win->screen_size->width, win->screen_size->height); - - win->width = win->height = 0; - win->x = win->y = 0; - - xcb_randr_select_input(win->connection, - win->screen->root, - XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE | - XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE | - XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY); - - win->database = xcb_xrm_database_from_default(win->connection); - g_assert_nonnull(win->database); - - window_update_scale(win); - - g_assert(xcb_errors_context_new(win->connection, &win->errors) == 0); - log_debug("Xcb errors loaded"); - - xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(win->screen); - while (depth_iter.rem) { - xcb_visualtype_iterator_t visual_iter = xcb_depth_visuals_iterator(depth_iter.data); - - while (visual_iter.rem) { - if (win->screen->root_visual == visual_iter.data->visual_id) { - win->visual_type = visual_iter.data; - goto found_visual; - } - xcb_visualtype_next(&visual_iter); - } - xcb_depth_next(&depth_iter); - } - -found_visual: - log_debug("Xcb visual type found [id=%u]", win->visual_type->visual_id); - - const uint32_t value_mask = XCB_CW_BACK_PIXMAP | XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL - | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP; - - const uint32_t event_mask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_STRUCTURE_NOTIFY - | XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_FOCUS_CHANGE - | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_PRESS; - - xcb_colormap_t colormap = xcb_generate_id(win->connection); - xcb_create_colormap(win->connection, XCB_COLORMAP_ALLOC_NONE, colormap, win->screen->root, win->visual_type->visual_id); - log_debug("Xcb colormap created [id=%u]", colormap); - - const uint32_t value_list[] = { - XCB_NONE, // back pixmap - 0x000000, // back pixel - 0x000000, // border pixel - true, // override redirect - event_mask, // event mask - colormap // colormap - }; - - win->width = win->height = 1; - log_debug("Window temporary size [width=%d, height=%d]", win->width, win->height); - - win->x = win->y = 0; - log_debug("Window temporary position [x=%d, y=%d]", win->x, win->y); - - win->window = xcb_generate_id(win->connection); - xcb_create_window(win->connection, - XCB_COPY_FROM_PARENT, - win->window, win->screen->root, - win->x, win->y, - win->width, win->height, - 0, // border - XCB_WINDOW_CLASS_INPUT_OUTPUT, - win->screen->root_visual, - value_mask, - value_list); - - log_debug("Xcb window created [id=%u]", win->window); - - wm_setup(win); - log_debug("Window wm options completed"); - - xcb_map_window(win->connection, win->window); - xcb_flush(win->connection); - log_debug("Xcb initialized"); - - win->surface = cairo_xcb_surface_create(win->connection, - win->window, - win->visual_type, - win->screen_size->width, - win->screen_size->height); - - g_assert_cmpint(cairo_surface_status(win->surface), ==, CAIRO_STATUS_SUCCESS); - log_debug("Cairo surface created"); - - win->cr = cairo_create(win->surface); - g_assert_cmpint(cairo_status(win->cr), ==, CAIRO_STATUS_SUCCESS); - log_debug("Cairo context created"); - - - attach_source(win); - log_debug("Xcb event loop attached"); - - return win; -} - -cairo_t *window_get_context(Window *win) -{ - return win->cr; -} - -void window_update_scale(Window *win) -{ - const char *dpi_res = "Xft.dpi"; - char *dpi_value; - - if (query_xrm(win, dpi_res, &dpi_value)) { - win->dpi = strtod(dpi_value, NULL); - g_free(dpi_value); - } else { - win->dpi = (double)win->screen_size->height * 25.4 / (double)win->screen_size->mheight; - log_debug("Fallback dpi value '%.2lf'", win->dpi); - } -} - -double window_get_scale(Window *win) -{ - return MAX(1, win->dpi/96.); -} - -void window_get_screen_size(Window *win, int *width, int *height) -{ - *width = win->screen_size->width; - *height = win->screen_size->height; -} - -void window_set_opacity(Window *win, double alpha) -{ - // Value between 0 and 1 - g_assert_true(alpha >= 0 && alpha <= 1); - unsigned long opacity = 0xffffffff * alpha; - - xcb_atom_t _NET_WM_WINDOW_OPACITY = intern_atom(win, "_NET_WM_WINDOW_OPACITY"); - xcb_change_property(win->connection, - XCB_PROP_MODE_REPLACE, - win->window, - _NET_WM_WINDOW_OPACITY, - XCB_ATOM_CARDINAL, - 32, - 1, - (char *)&opacity); - - log_debug("Window updated opacity [%.2lf%%]", alpha * 100.0); - -} - -void window_move(Window *win, int x, int y) -{ - if (win->x == x && win->y == y) return; - - win->x = x; - win->y = y; - - const uint32_t values[] = { x, y }; - xcb_configure_window(win->connection, - win->window, - XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, - values); - - log_debug("Window updated position [x=%d, y=%d]", win->x, win->y); -} - -void window_resize(Window *win, int width, int height) -{ - if (win->width == width && win->height == height) return; - - win->width = width; - win->height = height; - - const uint32_t values[] = { width, height }; - xcb_configure_window(win->connection, - win->window, - XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, - values); - - log_debug("Window updated size [width=%d, height=%d]", win->width, win->height); - - wm_set_size(win); -} - -static void window_paint_corners(Window *win) -{ - // TODO: Actually make this a parameter - int radius = win->height / 2; - double degree = M_PI / 180.0; - - // TODO: Check this value - int depth = 1; - - xcb_pixmap_t bitmap = xcb_generate_id(win->connection); - xcb_create_pixmap(win->connection, depth, bitmap, win->window, win->width, win->height); - log_debug("Xcb pixmap created [id=%u]", bitmap); - - cairo_surface_t *surface = cairo_xcb_surface_create_for_bitmap(win->connection, - win->screen, - bitmap, - win->width, - win->height); - - cairo_t *cr = cairo_create(surface); - - // TODO: Fix antialiasing situation - //cairo_set_antialias(cr, CAIRO_ANTIALIAS_GOOD); - - cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE); - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - - cairo_set_source_rgba(cr, 0, 0, 0, 0); - cairo_paint(cr); - - // TODO: Decouple somewhat drawing and X11 - cairo_set_source_rgba(cr, 1, 1, 1, 1); - cairo_arc(cr, radius, radius, radius, 90.0 * degree, 270 * degree); - cairo_arc(cr, win->width - radius, radius, radius, 270 * degree, 450 * degree); - cairo_fill(cr); - - log_debug("Xcb shape painted"); - - cairo_show_page(cr); - cairo_destroy(cr); - cairo_surface_flush(surface); - cairo_surface_destroy(surface); - - xcb_shape_mask(win->connection, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, win->window, 0, 0, bitmap); - xcb_shape_select_input(win->connection, win->window, XCB_SHAPE_NOTIFY); - log_debug("Xcb shape mask configured"); - - xcb_free_pixmap(win->connection, bitmap); -} - -void window_paint_surface(Window *win, cairo_surface_t *surface, int width, int height) -{ - cairo_xcb_surface_set_size(win->surface, width, height); - xcb_clear_area(win->connection, false, win->window, 0, 0, 0, 0); - - cairo_set_source_surface(win->cr, surface, 0, 0); - cairo_paint(win->cr); - cairo_show_page(win->cr); - - window_paint_corners(win); - - xcb_circulate_window(win->connection, XCB_CIRCULATE_RAISE_LOWEST, win->window); - xcb_flush(win->connection); -} - -void window_destroy(Window *win) -{ - g_source_destroy(win->source); - g_source_unref(win->source); - - cairo_destroy(win->cr); - cairo_surface_destroy(win->surface); - - xcb_ewmh_connection_wipe(&win->ewmh); - xcb_errors_context_free(win->errors); - xcb_xrm_database_free(win->database); - xcb_disconnect(win->connection); - g_free(win); -} - -// vim: ts=4 sw=4 et |