From 031357d2fb6883268e883db4d0c6c3dc9a32f509 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Fri, 26 Dec 2025 11:21:32 +0100
Subject: [PATCH] hide labels which don't fit inside the axis widget.

---
 src/lib/aqdiagram/graph/w_axis.c | 43 +++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/src/lib/aqdiagram/graph/w_axis.c b/src/lib/aqdiagram/graph/w_axis.c
index 2edb841..fbf5204 100644
--- a/src/lib/aqdiagram/graph/w_axis.c
+++ b/src/lib/aqdiagram/graph/w_axis.c
@@ -36,7 +36,10 @@ static GWENHYWFAR_CB void _freeData(void *bp, void *p);
 
 static void _setupObjectTree(AQDG_OBJECT *o);
 static void _createTickLabelsForLevel(AQDG_OBJECT *o, AQDG_GRAPH *graph, const AQDG_GRAPH_TICK_LIST *tickList, int level);
+static int _doesCollideWithOtherChildren(const AQDG_OBJECT *object, const AQDG_OBJECT *newObject);
+static int _fitsIntoAxisWidget(const AQDG_OBJECT *o, AQDG_OBJECT *child);
 static int _hasLabelCollisions(const AQDG_OBJECT *o);
+static void _hideNonFittingLabels(const AQDG_OBJECT *o);
 static int _hideEverySecondLabel(AQDG_OBJECT *o);
 
 
@@ -196,6 +199,8 @@ void AQDG_AxisWidget_HideCollidingChildren(AQDG_OBJECT *o)
 {
   int doRun=1;
 
+  _hideNonFittingLabels(o);
+
   while(doRun) {
     if (_hasLabelCollisions(o))
       doRun=(_hideEverySecondLabel(o)<0)?0:1;
@@ -334,11 +339,31 @@ int _doesCollideWithOtherChildren(const AQDG_OBJECT *object, const AQDG_OBJECT *
 
 
 
+int _fitsIntoAxisWidget(const AQDG_OBJECT *o, AQDG_OBJECT *child)
+{
+  int xLeft;
+  int xRight;
+  int yTop;
+  int yBottom;
+  int parentWidth;
+  int parentHeight;
+
+  parentWidth=AQDG_Object_GetWidth(o);
+  parentHeight=AQDG_Object_GetHeight(o);
+  xLeft=AQDG_Object_GetRelativeX(child);
+  xRight=xLeft+AQDG_Object_GetWidth(child);
+  yTop=AQDG_Object_GetRelativeY(child);
+  yBottom=yTop+AQDG_Object_GetHeight(child);
+
+  return ((xLeft>=0) && (xRight<parentWidth) && (yTop>=0) && (yBottom<parentHeight))?1:0;
+}
+
+
+
 int _hasLabelCollisions(const AQDG_OBJECT *o)
 {
   AQDG_OBJECT *child;
 
-  /* align left */
   child=AQDG_Object_Tree2_GetFirstChild(o);
   while(child) {
     if (!(AQDG_Object_GetFlags(child) & AQDG_OBJECT_FLAGS_HIDDEN)) {
@@ -352,6 +377,22 @@ int _hasLabelCollisions(const AQDG_OBJECT *o)
 
 
 
+void _hideNonFittingLabels(const AQDG_OBJECT *o)
+{
+  AQDG_OBJECT *child;
+
+  child=AQDG_Object_Tree2_GetFirstChild(o);
+  while(child) {
+    if (!(AQDG_Object_GetFlags(child) & AQDG_OBJECT_FLAGS_HIDDEN)) {
+      if (!_fitsIntoAxisWidget(o, child))
+	AQDG_Object_AddFlags(child, AQDG_OBJECT_FLAGS_HIDDEN);
+    }
+    child=AQDG_Object_Tree2_GetNext(child);
+  }
+}
+
+
+
 int _hideEverySecondLabel(AQDG_OBJECT *o)
 {
   AQDG_OBJECT *child;