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Backends, Inputs: Made horizontal scroll wheel and horizontal scroll direction consistent accross backends/os. (#4019, #6096, #1463)
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@ -35,6 +35,36 @@ HOW TO UPDATE?
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VERSION 1.89.3 (In Progress)
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-----------------------------------------------------------------------
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Breaking changes:
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- Inputs, Scrolling: Made horizontal scroll wheel and horizontal scroll direction consistent
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accross backends/os. (#4019, #6096, #1463) [@PathogenDavid, @ocornut, @rokups]
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- Clarified that 'wheel_y > 0.0f' scrolls Up, 'wheel_y > 0.0f' scrolls Down.
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- Clarified that 'wheel_x > 0.0f' scrolls Left, 'wheel_x > 0.0f' scrolls Right.
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- Backends: Win32: flipping WM_MOUSEHWHEEL value to match other backends and
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offer consistent horizontal scrolling direction. (#4019)
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- Backends: SDL: flipping SDL_MOUSEWHEEL 'wheel.x' value to match other backends and
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offer consistent horizontal scrolling direction. (#4019)
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- Backends: GLFW+Emscripten: flipping both wheels axises + scaling magnitude down when
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running on Emscripten's GLFW emulation. (#6096) [@topolarity]
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- Shift+WheelY support on non-OSX machines was already correct. (#2424, #1463)
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(whereaas on OSX machines Shift+WheelY turns into WheelX at the OS level).
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- If you use a custom-backend, you should verify that:
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- Wheel up (*) emit wheel_y > 0.0f values and scrolls up.
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- Wheel down (*) emit wheel_y < 0.0f values and scrolls down.
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- Wheel left (*) or mod+wheel up emit wheel_x > 0.0f values and scroll Left.
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- Wheel right (*) or mod+wheel down emits wheel_x < 0.0f values and scroll Right.
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- (*) both axises flipped on OSX for mouse and touchpad when 'Natural Scrolling' is on.
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- (*) both axises flipped On Windows for touchpad only when 'Settings->Touchpad->Down motion scrolls up' is set.
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- You can use 'Demo->Tools->Debug Log->IO" to visualize values submitted to Dear ImGui.
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- Known issues remaining with Emscripten:
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- The magnitude of wheeling values on Emscripten setups is still mostly wrong. (#6096)
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- When running the Emscripten app on a Mac with a mouse, SHIFT+WheelY doesn't turn into WheelX.
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This is because we don't know that we are running on Mac and apply our own Shift+swapping
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on top of OSX' own swapping, so wheel axises are swapped twice. Emscripten apps may need
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to find a way to detect this and set io.ConfigMacOSXBehaviors manually (if you know a way
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let us know!), or offer the "OSX-style behavior" option to their user.
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All changes:
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- Window: Avoid rendering shapes for hidden resize grips.
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