зеркало из https://github.com/mozilla/gecko-dev.git
Bug 979720 - Convert max velocity from px/ms to inches/ms. r=bkelly
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ae4aa8bc28
Коммит
3ba899c3dc
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@ -870,9 +870,9 @@ pref("osfile.reset_worker_delay", 5000);
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pref("apz.asyncscroll.throttle", 40);
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pref("apz.pan_repaint_interval", 16);
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// Maximum fling velocity in px/ms. Slower devices may need to reduce this
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// Maximum fling velocity in inches/ms. Slower devices may need to reduce this
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// to avoid checkerboarding. Note, float value must be set as a string.
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pref("apz.max_velocity_pixels_per_ms", "6.0");
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pref("apz.max_velocity_pixels_per_inch", "0.0375");
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// Tweak default displayport values to reduce the risk of running out of
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// memory when zooming in
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@ -8,6 +8,7 @@
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#include <math.h> // for fabsf, pow, powf
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#include <algorithm> // for max
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#include "AsyncPanZoomController.h" // for AsyncPanZoomController
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#include "mozilla/layers/APZCTreeManager.h" // for APZCTreeManager
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#include "FrameMetrics.h" // for FrameMetrics
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#include "mozilla/Attributes.h" // for MOZ_FINAL
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#include "mozilla/Preferences.h" // for Preferences
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@ -65,9 +66,9 @@ namespace layers {
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*/
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/**
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* "apz.max_velocity_pixels_per_ms"
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* "apz.max_velocity_pixels_per_inch"
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*
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* Maximum velocity in pixels per millisecond. Velocity will be capped at this
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* Maximum velocity in inches per millisecond. Velocity will be capped at this
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* value if a faster fling occurs. Negative values indicate unlimited velocity.
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*
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* The default value is -1.0f, set in gfxPrefs.h
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@ -84,7 +85,7 @@ Axis::Axis(AsyncPanZoomController* aAsyncPanZoomController)
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void Axis::UpdateWithTouchAtDevicePoint(int32_t aPos, const TimeDuration& aTimeDelta) {
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float newVelocity = mAxisLocked ? 0 : (mPos - aPos) / aTimeDelta.ToMilliseconds();
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if (gfxPrefs::APZMaxVelocity() > 0.0f) {
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newVelocity = std::min(newVelocity, gfxPrefs::APZMaxVelocity());
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newVelocity = std::min(newVelocity, gfxPrefs::APZMaxVelocity() * APZCTreeManager::GetDPI());
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}
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mVelocity = newVelocity;
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@ -106,7 +106,7 @@ private:
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DECL_GFX_PREF(Once, "apz.fling_friction", APZFlingFriction, float, 0.002f);
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DECL_GFX_PREF(Once, "apz.fling_stopped_threshold", APZFlingStoppedThreshold, float, 0.01f);
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DECL_GFX_PREF(Once, "apz.max_event_acceleration", APZMaxEventAcceleration, float, 999.0f);
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DECL_GFX_PREF(Once, "apz.max_velocity_pixels_per_ms", APZMaxVelocity, float, -1.0f);
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DECL_GFX_PREF(Once, "apz.max_velocity_pixels_per_inch", APZMaxVelocity, float, -1.0f);
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DECL_GFX_PREF(Once, "apz.max_velocity_queue_size", APZMaxVelocityQueueSize, uint32_t, 5);
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DECL_GFX_PREF(Once, "gfx.android.rgb16.force", AndroidRGB16Force, bool, false);
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