]> git.sur5r.net Git - i3/i3/blobdiff - src/window.c
window.c: Reduce code in window_update_* functions
[i3/i3] / src / window.c
index d6136c788039f50d0a5131b83bfc9855c5af3eb7..8c3ae8502a937acc378fdad73d505fcc2c547038 100644 (file)
@@ -1,5 +1,3 @@
-#undef I3__FILE__
-#define I3__FILE__ "window.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
@@ -53,14 +51,10 @@ void window_update_class(i3Window *win, xcb_get_property_reply_t *prop, bool bef
     LOG("WM_CLASS changed to %s (instance), %s (class)\n",
         win->class_instance, win->class_class);
 
-    if (before_mgmt) {
-        free(prop);
-        return;
-    }
-
-    run_assignments(win);
-
     free(prop);
+    if (!before_mgmt) {
+        run_assignments(win);
+    }
 }
 
 /*
@@ -76,8 +70,12 @@ void window_update_name(i3Window *win, xcb_get_property_reply_t *prop, bool befo
     }
 
     i3string_free(win->name);
-    win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
-                                               xcb_get_property_value_length(prop));
+
+    /* Truncate the name at the first zero byte. See #3515. */
+    const int len = xcb_get_property_value_length(prop);
+    char *name = sstrndup(xcb_get_property_value(prop), len);
+    win->name = i3string_from_utf8(name);
+    free(name);
 
     Con *con = con_by_window_id(win->id);
     if (con != NULL && con->title_format != NULL) {
@@ -90,14 +88,10 @@ void window_update_name(i3Window *win, xcb_get_property_reply_t *prop, bool befo
 
     win->uses_net_wm_name = true;
 
-    if (before_mgmt) {
-        free(prop);
-        return;
-    }
-
-    run_assignments(win);
-
     free(prop);
+    if (!before_mgmt) {
+        run_assignments(win);
+    }
 }
 
 /*
@@ -121,8 +115,10 @@ void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop, bo
     }
 
     i3string_free(win->name);
-    win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
-                                               xcb_get_property_value_length(prop));
+    const int len = xcb_get_property_value_length(prop);
+    char *name = sstrndup(xcb_get_property_value(prop), len);
+    win->name = i3string_from_utf8(name);
+    free(name);
 
     Con *con = con_by_window_id(win->id);
     if (con != NULL && con->title_format != NULL) {
@@ -137,14 +133,10 @@ void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop, bo
 
     win->name_x_changed = true;
 
-    if (before_mgmt) {
-        free(prop);
-        return;
-    }
-
-    run_assignments(win);
-
     free(prop);
+    if (!before_mgmt) {
+        run_assignments(win);
+    }
 }
 
 /*
@@ -240,14 +232,10 @@ void window_update_role(i3Window *win, xcb_get_property_reply_t *prop, bool befo
     win->role = new_role;
     LOG("WM_WINDOW_ROLE changed to \"%s\"\n", win->role);
 
-    if (before_mgmt) {
-        free(prop);
-        return;
-    }
-
-    run_assignments(win);
-
     free(prop);
+    if (!before_mgmt) {
+        run_assignments(win);
+    }
 }
 
 /*
@@ -268,6 +256,127 @@ void window_update_type(i3Window *window, xcb_get_property_reply_t *reply) {
     run_assignments(window);
 }
 
+/*
+ * Updates the WM_NORMAL_HINTS
+ *
+ */
+bool window_update_normal_hints(i3Window *win, xcb_get_property_reply_t *reply, xcb_get_geometry_reply_t *geom) {
+    bool changed = false;
+    xcb_size_hints_t size_hints;
+
+    /* If the hints were already in this event, use them, if not, request them */
+    bool success;
+    if (reply != NULL) {
+        success = xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
+    } else {
+        success = xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, win->id), &size_hints, NULL);
+    }
+    if (!success) {
+        DLOG("Could not get WM_NORMAL_HINTS\n");
+        return false;
+    }
+
+#define ASSIGN_IF_CHANGED(original, new) \
+    do {                                 \
+        if (original != new) {           \
+            original = new;              \
+            changed = true;              \
+        }                                \
+    } while (0)
+
+    if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
+        DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
+
+        ASSIGN_IF_CHANGED(win->min_width, size_hints.min_width);
+        ASSIGN_IF_CHANGED(win->min_height, size_hints.min_height);
+    }
+
+    if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE)) {
+        DLOG("Maximum size: %d (width) x %d (height)\n", size_hints.max_width, size_hints.max_height);
+
+        int max_width = max(0, size_hints.max_width);
+        int max_height = max(0, size_hints.max_height);
+
+        ASSIGN_IF_CHANGED(win->max_width, max_width);
+        ASSIGN_IF_CHANGED(win->max_height, max_height);
+    } else {
+        DLOG("Clearing maximum size \n");
+
+        ASSIGN_IF_CHANGED(win->max_width, 0);
+        ASSIGN_IF_CHANGED(win->max_height, 0);
+    }
+
+    if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
+        DLOG("Size increments: %d (width) x %d (height)\n", size_hints.width_inc, size_hints.height_inc);
+
+        if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) {
+            ASSIGN_IF_CHANGED(win->width_increment, size_hints.width_inc);
+        } else {
+            ASSIGN_IF_CHANGED(win->width_increment, 0);
+        }
+
+        if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) {
+            ASSIGN_IF_CHANGED(win->height_increment, size_hints.height_inc);
+        } else {
+            ASSIGN_IF_CHANGED(win->height_increment, 0);
+        }
+    } else {
+        DLOG("Clearing size increments\n");
+
+        ASSIGN_IF_CHANGED(win->width_increment, 0);
+        ASSIGN_IF_CHANGED(win->height_increment, 0);
+    }
+
+    /* The base width / height is the desired size of the window. */
+    if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE &&
+        (win->base_width >= 0) && (win->base_height >= 0)) {
+        DLOG("Base size: %d (width) x %d (height)\n", size_hints.base_width, size_hints.base_height);
+
+        ASSIGN_IF_CHANGED(win->base_width, size_hints.base_width);
+        ASSIGN_IF_CHANGED(win->base_height, size_hints.base_height);
+    } else {
+        DLOG("Clearing base size\n");
+
+        ASSIGN_IF_CHANGED(win->base_width, 0);
+        ASSIGN_IF_CHANGED(win->base_height, 0);
+    }
+
+    if (geom != NULL &&
+        (size_hints.flags & XCB_ICCCM_SIZE_HINT_US_POSITION || size_hints.flags & XCB_ICCCM_SIZE_HINT_P_POSITION) &&
+        (size_hints.flags & XCB_ICCCM_SIZE_HINT_US_SIZE || size_hints.flags & XCB_ICCCM_SIZE_HINT_P_SIZE)) {
+        DLOG("Setting geometry x=%d y=%d w=%d h=%d\n", size_hints.x, size_hints.y, size_hints.width, size_hints.height);
+        geom->x = size_hints.x;
+        geom->y = size_hints.y;
+        geom->width = size_hints.width;
+        geom->height = size_hints.height;
+    }
+
+    /* If no aspect ratio was set or if it was invalid, we ignore the hints */
+    if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT &&
+        (size_hints.min_aspect_num >= 0) && (size_hints.min_aspect_den > 0) &&
+        (size_hints.max_aspect_num >= 0) && (size_hints.max_aspect_den > 0)) {
+        /* Convert numerator/denominator to a double */
+        double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
+        double max_aspect = (double)size_hints.max_aspect_num / size_hints.max_aspect_den;
+        DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
+        if (fabs(win->min_aspect_ratio - min_aspect) > DBL_EPSILON) {
+            win->min_aspect_ratio = min_aspect;
+            changed = true;
+        }
+        if (fabs(win->max_aspect_ratio - max_aspect) > DBL_EPSILON) {
+            win->max_aspect_ratio = max_aspect;
+            changed = true;
+        }
+    } else {
+        DLOG("Clearing aspect ratios\n");
+
+        ASSIGN_IF_CHANGED(win->min_aspect_ratio, 0.0);
+        ASSIGN_IF_CHANGED(win->max_aspect_ratio, 0.0);
+    }
+
+    return changed;
+}
+
 /*
  * Updates the WM_HINTS (we only care about the input focus handling part).
  *
@@ -314,12 +423,15 @@ void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *ur
  *
  */
 void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, border_style_t *motif_border_style) {
-/* This implementation simply mirrors Gnome's Metacity. Official
+    /* This implementation simply mirrors Gnome's Metacity. Official
      * documentation of this hint is nowhere to be found.
      * For more information see:
      * https://people.gnome.org/~tthurman/docs/metacity/xprops_8h-source.html
-     * http://stackoverflow.com/questions/13787553/detect-if-a-x11-window-has-decorations
+     * https://stackoverflow.com/questions/13787553/detect-if-a-x11-window-has-decorations
      */
+#define MWM_HINTS_FLAGS_FIELD 0
+#define MWM_HINTS_DECORATIONS_FIELD 2
+
 #define MWM_HINTS_DECORATIONS (1 << 1)
 #define MWM_DECOR_ALL (1 << 0)
 #define MWM_DECOR_BORDER (1 << 1)
@@ -333,17 +445,23 @@ void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, bo
         return;
     }
 
-    /* The property consists of an array of 5 uint64_t's. The first value is a bit
-     * mask of what properties the hint will specify. We are only interested in
-     * MWM_HINTS_DECORATIONS because it indicates that the second value of the
+    /* The property consists of an array of 5 uint32_t's. The first value is a
+     * bit mask of what properties the hint will specify. We are only interested
+     * in MWM_HINTS_DECORATIONS because it indicates that the third value of the
      * array tells us which decorations the window should have, each flag being
-     * a particular decoration. */
-    uint64_t *motif_hints = (uint64_t *)xcb_get_property_value(prop);
-
-    if (motif_border_style != NULL && motif_hints[0] & MWM_HINTS_DECORATIONS) {
-        if (motif_hints[1] & MWM_DECOR_ALL || motif_hints[1] & MWM_DECOR_TITLE)
+     * a particular decoration. Notice that X11 (Xlib) often mentions 32-bit
+     * fields which in reality are implemented using unsigned long variables
+     * (64-bits long on amd64 for example). On the other hand,
+     * xcb_get_property_value() behaves strictly according to documentation,
+     * i.e. returns 32-bit data fields. */
+    uint32_t *motif_hints = (uint32_t *)xcb_get_property_value(prop);
+
+    if (motif_border_style != NULL &&
+        motif_hints[MWM_HINTS_FLAGS_FIELD] & MWM_HINTS_DECORATIONS) {
+        if (motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_ALL ||
+            motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_TITLE)
             *motif_border_style = BS_NORMAL;
-        else if (motif_hints[1] & MWM_DECOR_BORDER)
+        else if (motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_BORDER)
             *motif_border_style = BS_PIXEL;
         else
             *motif_border_style = BS_NONE;
@@ -351,6 +469,8 @@ void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, bo
 
     FREE(prop);
 
+#undef MWM_HINTS_FLAGS_FIELD
+#undef MWM_HINTS_DECORATIONS_FIELD
 #undef MWM_HINTS_DECORATIONS
 #undef MWM_DECOR_ALL
 #undef MWM_DECOR_BORDER