129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
#include "xwindow.h"
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#include <xcb/xcb.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_keysyms.h>
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#include <xcb/xproto.h>
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#include "action.h"
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#include "utils.h"
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#include "wm.h"
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#include "xcursor.h"
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xcb_window_t xwindow_create_bar_window(area_t area, uint32_t background_argb,
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cursor_t cursor) {
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static xcb_colormap_t colormap = XCB_NONE;
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visual_t *visual = xwindow_get_xcb_visual(true);
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xcb_visualid_t visual_id = visual->visual->visual_id;
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xcb_connection_t *conn = wm.xcb_conn;
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if (colormap == XCB_NONE) {
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colormap = xcb_generate_id(conn);
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uint8_t alloc = XCB_COLORMAP_ALLOC_NONE;
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xcb_create_colormap(conn, alloc, colormap, wm.screen->root, visual_id);
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}
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xcb_window_t window = xcb_generate_id(conn);
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uint32_t value_mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_BACK_PIXEL |
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XCB_CW_BORDER_PIXEL | XCB_CW_EVENT_MASK |
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XCB_CW_CURSOR | XCB_CW_COLORMAP;
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const xcb_create_window_value_list_t value_list = {
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.override_redirect = true,
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.background_pixel = background_argb,
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.border_pixel = 0,
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.event_mask = XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_EXPOSURE,
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.cursor = xcursor_get_xcb_cursor(cursor),
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.colormap = colormap,
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};
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xcb_void_cookie_t cookie;
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cookie = xcb_create_window_aux_checked(
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conn, visual->depth, window, wm.screen->root, area.x, area.y, area.width,
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area.height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, visual_id, value_mask,
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&value_list);
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p_delete(&visual);
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if (xcb_request_check(conn, cookie)) fatal("cannot create bar window");
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cookie = xcb_map_window(conn, window);
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if (xcb_request_check(conn, cookie)) fatal("cannot map bar window:");
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xcb_aux_sync(conn);
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return window;
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}
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static visual_t *find_alpha_visual() {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(wm.screen);
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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if (depth_iter.data->depth != 32) 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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for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
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if (visual_iter.data->_class == XCB_VISUAL_CLASS_TRUE_COLOR) {
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visual_t *r = p_new(visual_t, 1);
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r->visual = visual_iter.data;
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r->depth = depth_iter.data->depth;
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return r;
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}
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}
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}
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return nullptr;
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}
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static visual_t *find_root_visual() {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(wm.screen);
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xcb_visualid_t vid = wm.screen->root_visual;
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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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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for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
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if (visual_iter.data->visual_id == vid) {
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visual_t *r = p_new(visual_t, 1);
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r->visual = visual_iter.data;
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r->depth = depth_iter.data->depth;
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return r;
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}
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}
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}
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return nullptr;
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}
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/**
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* @brief 获取 xcb 的 visual 及其对应的 depth
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* @param prefer_alpha 支持 alpha 的 visual 优先
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* @returns 返回的信息使用后记得使用 free 释放
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*/
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visual_t *xwindow_get_xcb_visual(bool prefer_alpha) {
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if (!prefer_alpha) return find_root_visual();
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visual_t *visual = find_alpha_visual();
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if (visual == nullptr) visual = find_root_visual();
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return visual;
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}
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void xwindow_change_cursor(xcb_window_t window, cursor_t cursor) {
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xcb_params_cw_t params = {.cursor = xcursor_get_xcb_cursor(cursor)};
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xcb_aux_change_window_attributes(wm.xcb_conn, window, XCB_CW_CURSOR, ¶ms);
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}
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void xwindow_grab_keys(xcb_window_t window, const keyboard_t *keys,
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int keys_length) {
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xcb_connection_t *conn = wm.xcb_conn;
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xcb_ungrab_key(conn, XCB_GRAB_ANY, window, modifier_any);
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xcb_grab_mode_t mode = XCB_GRAB_MODE_ASYNC;
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xcb_keycode_t *keycode = nullptr;
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for (int i = 0; i < keys_length; i++) {
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keycode = xcb_key_symbols_get_keycode(wm.key_symbols, keys[i].keysym);
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if (keycode) {
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xcb_grab_key(conn, true, window, keys[i].modifiers, *keycode, mode, mode);
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p_delete(&keycode);
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}
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}
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}
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