From 8902bfca018b8bd573454ba7fffb7cde5d3983b0 Mon Sep 17 00:00:00 2001
From: Samuel Fadel <samuel@nihil.ws>
Date: Wed, 7 Dec 2022 13:14:27 +0100
Subject: Ported some more code.

* schewm.c: Mostly added utility functions not yet wired to wm.
---
 schewm.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)

(limited to 'schewm.c')

diff --git a/schewm.c b/schewm.c
index 5f7bc8a..8d19b60 100644
--- a/schewm.c
+++ b/schewm.c
@@ -23,6 +23,45 @@ const uint16_t RESIZE_GLYPH = 120;
 const uint16_t MOD_META = XCB_MOD_MASK_4;
 const uint16_t MOD_SHIFT = XCB_MOD_MASK_SHIFT;
 
+// General utility functions
+uint32_t
+parse_color(const char *s) {
+    unsigned int r, g, b;
+    if (s == NULL
+        || strlen(s) != 7
+        || sscanf(s, "#%2x%2x%2x", &r, &g, &b) != 3) {
+        // Parse error
+        return 0;
+    }
+    return 0xff000000 | (r << 16) | (g << 8) | (b << 0);
+}
+
+uint64_t
+make_key_chord(uint16_t mod, xcb_keysym_t keysym) {
+    uint64_t chord = mod;
+    chord = (chord << 32) | keysym;
+    return chord;
+}
+
+uint32_t
+make_button_chord(uint16_t mod, xcb_button_t button) {
+    uint32_t chord = mod;
+    chord = (chord << 16) | button;
+    return chord;
+}
+
+void
+parse_key_chord(uint64_t chord, uint16_t *mod, xcb_keysym_t *keysym) {
+    *mod = chord >> 32;
+    *keysym = chord & 0xffff;
+}
+
+void
+parse_button_chord(uint32_t chord, uint16_t *mod, xcb_button_t *button) {
+    *mod = chord >> 16;
+    *button = chord & 0xf;
+}
+
 struct Point {
     int16_t x, y;
 };
@@ -1230,6 +1269,13 @@ dpy_window_under_cursor() {
     return window;
 }
 
+void
+dpy_center_cursor_client(const struct Client *client) {
+    int16_t x = client->width / 2;
+    int16_t y = client->height / 2;
+    xcb_warp_pointer(dpy.conn, XCB_NONE, client->id, 0, 0, 0, 0, x, y);
+}
+
 void
 dpy_grab_buttons(struct Client *client) {
 }
@@ -1536,6 +1582,100 @@ void
 wm_set_client_workspace(struct Client *client, uint32_t workspace) {
 }
 
+void
+wm_client_monitor_size(const struct Client *client,
+                       bool with_offsets,
+                       struct Rect *rect) {
+    if (client->monitor == NULL) {
+        // No monitor means that the default screen is our monitor
+        rect->x = rect->y = 0;
+        rect->width = dpy.screen->width_in_pixels;
+        rect->height = dpy.screen->height_in_pixels;
+    } else {
+        rect->x = client->monitor->x;
+        rect->y = client->monitor->y;
+        rect->width = client->monitor->width;
+        rect->height = client->monitor->height;
+    }
+
+    if (with_offsets) {
+        rect->x += cfg.offset_x;
+        rect->y += cfg.offset_y;
+        rect->width -= cfg.offset_width;
+        rect->height -= cfg.offset_height;
+    }
+}
+
+bool
+wm_fit_client(struct Client *client) {
+    if (client->state == WS_ICONIFIED) {
+        return false;
+    }
+
+    struct Rect mon_size;
+    wm_client_monitor_size(client, true, &mon_size);
+
+    // Check if client *looks* maximized, event though it is not
+    if (client->state == WS_NORMAL
+        && client->width >= mon_size.width
+        && client->height >= mon_size.height) {
+        wm_set_client_state(client, WS_MAXIMIZED);
+        return true;
+    }
+
+    bool should_move = false;
+    // Check if client is located outside monitor coords
+    if (client->x > mon_size.x + mon_size.width) {
+        client->x = mon_size.x + mon_size.width - client->width - cfg.inner_border_width * 2;
+        should_move = true;
+    }
+    if (client->y > mon_size.y + mon_size.height) {
+        client->y = mon_size.y + mon_size.height - client->height - cfg.inner_border_width * 2;
+        should_move = true;
+    }
+    if (client->x < mon_size.x) {
+        client->x = mon_size.x;
+        should_move = true;
+    }
+    if (client->y < mon_size.y) {
+        client->y = mon_size.y;
+        should_move = true;
+    }
+
+    // Check if client is larger than monitor, if so move to upper corner and
+    // resize to fill
+    bool should_resize = wm_apply_size_hints(client);
+    uint16_t border_width = client->should_ignore_borders ? 0 : cfg.inner_border_width;
+    if (client->width + border_width * 2 > mon_size.width) {
+        client->x = mon_size.x;
+        client->width = mon_size.width - border_width * 2;
+        should_move = true;
+        should_resize = true;
+    } else if (client->x + client->width + border_width * 2 > mon_size.x + mon_size.width) {
+        client->x = mon_size.x + mon_size.width - (client->width + border_width * 2);
+        should_move = true;
+    }
+    if (client->height + border_width * 2 > mon_size.height) {
+        client->y = mon_size.y;
+        client->height = mon_size.height - border_width * 2;
+        should_move = true;
+        should_resize = true;
+    } else if (client->y + client->height + border_width * 2 > mon_size.y + mon_size.height) {
+        client->y = mon_size.y + mon_size.height - (client->height + border_width * 2);
+        should_move = true;
+    }
+
+    if (should_move && should_resize) {
+        dpy_update_window_geometry(client);
+    } else if (should_move) {
+        dpy_update_window_position(client);
+    } else if (should_resize) {
+        dpy_update_window_size(client);
+    }
+
+    return should_move || should_resize;
+}
+
 /*
  * event handlers which take a generic event and know what to cast it into.
  */
-- 
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