Unified calculation of icon size for preset BitmapComboBox

1 files changed, 9 insertions, 4 deletions

diff --git a/src/slic3r/GUI/PresetBundle.cpp b/src/slic3r/GUI/PresetBundle.cpp
index 3aee71c4c..d6e99b014 100644
--- a/src/slic3r/GUI/PresetBundle.cpp
+++ b/src/slic3r/GUI/PresetBundle.cpp
@@ -1487,11 +1487,16 @@ void PresetBundle::update_platter_filament_ui(unsigned int idx_extruder, GUI::Pr
      * and scale them in respect to em_unit value
      */
     const float scale_f = ui->em_unit() * 0.1f;
-    const int icon_height       = 16 * scale_f + 0.5f;
-    const int normal_icon_width = 16 * scale_f + 0.5f;
+
+    // To avoid the errors of number rounding for different combination of monitor configuration,
+    // let use scaled 8px, as a smallest icon unit 
+    const int icon_unit         = 8 * scale_f + 0.5f;
+    const int icon_height       = 2 * icon_unit;    //16 * scale_f + 0.5f;
+    const int normal_icon_width = 2 * icon_unit;    //16 * scale_f + 0.5f;
+    const int thin_icon_width   = icon_unit;        //8 * scale_f + 0.5f;
+    const int wide_icon_width   = 3 * icon_unit;    //24 * scale_f + 0.5f;
+
     const int space_icon_width  = 2  * scale_f + 0.5f;
-    const int wide_icon_width   = 24 * scale_f + 0.5f;
-    const int thin_icon_width   = 8  * scale_f + 0.5f;
 
 	for (int i = this->filaments().front().is_visible ? 0 : 1; i < int(this->filaments().size()); ++i) {
         const Preset &preset    = this->filaments.preset(i);