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Unified Diff: ui/views/linux_ui/linux_ui.h

Issue 2963033002: Linux UI: Dynamically respond to changes in the scale factor (Closed)
Patch Set: Call OnHostResizedInPixels() when scale factor changes Created 3 years, 6 months ago
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Index: ui/views/linux_ui/linux_ui.h
diff --git a/ui/views/linux_ui/linux_ui.h b/ui/views/linux_ui/linux_ui.h
index b7de506d154cef0015010274ee4a675fad21ed22..bc831d80f8f952f4895cb52d36f90edfb6baf123 100644
--- a/ui/views/linux_ui/linux_ui.h
+++ b/ui/views/linux_ui/linux_ui.h
@@ -38,6 +38,7 @@ class NativeTheme;
namespace views {
class Border;
+class DeviceScaleFactorObserver;
class LabelButton;
class LabelButtonBorder;
class WindowButtonOrderObserver;
@@ -157,6 +158,16 @@ class VIEWS_EXPORT LinuxUI : public ui::LinuxInputMethodContextFactory,
// Determines the device scale factor of the primary screen.
virtual float GetDeviceScaleFactor() const = 0;
+
+ // Registers |observer| to be notified about changes to the device
+ // scale factor.
+ virtual void AddDeviceScaleFactorObserver(
+ DeviceScaleFactorObserver* observer) = 0;
+
+ // Unregisters |observer| from receiving changes to the device scale
+ // factor.
+ virtual void RemoveDeviceScaleFactorObserver(
+ DeviceScaleFactorObserver* observer) = 0;
};
} // namespace views

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