Working on Winforms, Android and iOS

beeware · Mar 2, 2023 · a1d1439 · a1d1439
1 parent 9f65938
commit a1d1439
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Showing 7 changed files with 27 additions and 1 deletion.
diff --git a/android/src/toga_android/widgets/base.py b/android/src/toga_android/widgets/base.py
@@ -132,6 +132,9 @@ def insert_child(self, index, child):
     def remove_child(self, child):
         child.container = None
 
+    def refresh(self):
+        self.rehint()
+
     def rehint(self):
         pass
 

diff --git a/android/src/toga_android/widgets/box.py b/android/src/toga_android/widgets/box.py
@@ -1,4 +1,5 @@
 from travertino.constants import TRANSPARENT
+from travertino.size import at_least
 
 from ..colors import native_color
 from ..libs.activity import MainActivity
@@ -27,3 +28,7 @@ def set_background_color(self, value):
         self.native.setBackgroundColor(
             native_color(TRANSPARENT if (value is None) else value)
         )
+
+    def rehint(self):
+        self.interface.intrinsic.width = at_least(0)
+        self.interface.intrinsic.height = at_least(0)
diff --git a/examples/resize/src/resize/app.py b/examples/resize/src/resize/app.py
@@ -79,7 +79,9 @@ def on_change_text(self, panel, width, height, flex):
         setattr_if_changed(self.text_label.style, "flex", flex)
 
     def on_change_style(self, panel, width, height, flex):
-        INCREMENT = 50
+        # Increment should be large enough that the minimum window width can be determined
+        # by either the buttons or the labels, depending on the labels' size.
+        INCREMENT = 60
         setattr_if_changed(self.style_label.style, "width", width * INCREMENT)
         setattr_if_changed(self.style_label.style, "height", height * INCREMENT)
         setattr_if_changed(self.style_label.style, "flex", flex)

diff --git a/iOS/src/toga_iOS/widgets/base.py b/iOS/src/toga_iOS/widgets/base.py
@@ -119,5 +119,8 @@ def add_constraints(self):
         self.constraints = Constraints(self)
         self.native.translatesAutoresizingMaskIntoConstraints = False
 
+    def refresh(self):
+        self.rehint()
+
     def rehint(self):
         pass
diff --git a/iOS/src/toga_iOS/widgets/box.py b/iOS/src/toga_iOS/widgets/box.py
@@ -1,4 +1,5 @@
 from rubicon.objc import objc_method, objc_property
+from travertino.size import at_least
 
 from toga_iOS.colors import native_color
 from toga_iOS.libs import UIColor, UIView
@@ -37,3 +38,7 @@ def set_background_color(self, value):
                 self.native.backgroundColor = UIColor.systemBackgroundColor()  # iOS 13+
             except AttributeError:
                 self.native.backgroundColor = UIColor.whiteColor
+
+    def rehint(self):
+        self.interface.intrinsic.width = at_least(0)
+        self.interface.intrinsic.height = at_least(0)
diff --git a/winforms/src/toga_winforms/widgets/base.py b/winforms/src/toga_winforms/widgets/base.py
@@ -124,5 +124,8 @@ def insert_child(self, index, child):
     def remove_child(self, child):
         child.container = None
 
+    def refresh(self):
+        self.rehint()
+
     def rehint(self):
         pass
diff --git a/winforms/src/toga_winforms/widgets/box.py b/winforms/src/toga_winforms/widgets/box.py
@@ -1,4 +1,5 @@
 from travertino.constants import TRANSPARENT
+from travertino.size import at_least
 
 from toga_winforms.colors import native_color
 from toga_winforms.libs import Point, Size, WinForms
@@ -36,3 +37,7 @@ def set_background_color(self, value):
             self.native.BackColor = native_color(value)
         else:
             self.native.BackColor = native_color(TRANSPARENT)
+
+    def rehint(self):
+        self.interface.intrinsic.width = at_least(0)
+        self.interface.intrinsic.height = at_least(0)