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Simple Directmedia Layer
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Sam Lantinga cc7b2fc512 Temporary fix for bug 3432 - macOS 10.12: small scrolls (1 wheel notch) don't generate events 
Eric Wasylishen

This bug was reintroduced by https://hg.libsdl.org/SDL/rev/fcf24b38a28a

The steps to reproduce are the same: run the "testrelative" SDL demo with "--info all",
connect a USB mouse with a scroll wheel, and roll the scroll wheel one "notch". You'll get log output like:

testdraw2[1644:67222] INFO: SDL EVENT: Mouse: wheel scrolled 0 in x and 0 in y (reversed: 1) in window 1

As far as I can tell macOS doesn't have an API for getting the number of "wheel notches"; I get a deltaY of 0.100006 for one "notch", and it's heavily accelerated (if you roll the wheel quickly you'll get large deltas). So NSEvent's deltaY is only meant to be used for scrolling a scroll view, with the given distance in points, not something like selecting an item in a game.

Here's a temporary patch that at restores the foor/ceil in Cocoa_HandleMouseWheel.
Not ideal, but at least it restores the ability to scroll one notch of a mousewheel.
 		2018-03-10 21:13:50 -08:00
VisualC SDL_log10 2018-01-17 11:53:09 -05:00
VisualC-WinRT Windows Phone 8.0 is no longer supported 2018-02-09 08:03:03 -08:00
Xcode Fixed bug 4088 - Fix Metal link errors with test programs in SDLTest.xcodeproj 2018-02-20 09:04:31 -08:00
Xcode-iOS Added missing file to tvOS build 2018-02-24 08:40:30 -08:00
acinclude Fixed bug 3481 - Configure fails to detect dynamic library support on powerpc64le 2016-11-06 20:26:48 -08:00
android-project Try to dynamically create a default Android game controller mapping based on the buttons and axes on the controller. 2018-03-06 14:51:50 -08:00
android-project-ant Added the old ant Android build project structure 2017-10-28 12:11:25 -07:00
build-scripts Fixed bug 4065 - SDL_wave.c fail to compile in armeabi with ndk r16b 2018-01-27 12:05:26 -08:00
cmake Fixed bug 4027 - CheckLibSampleRate macro in sdlchecks.cmake never defines HAVE_LIBSAMPLERATE{,_SHARED}, so they're always reported as disabled by MESSAGE_TESTED_OPTION macro in macros.cmake 2018-02-13 13:25:59 -08:00
debian Updated copyright for 2018 2018-01-03 10:03:25 -08:00
docs On Android show the system UI when an SDL window is windowed, hide the system UI when it's fullscreen, like we do on iOS. 2018-02-11 18:23:37 -08:00
include Added SDL_GameControllerMappingForDeviceIndex() to get the mapping for a controller before it's opened 2018-03-07 13:30:40 -08:00
src Temporary fix for bug 3432 - macOS 10.12: small scrolls (1 wheel notch) don't generate events 2018-03-10 21:13:50 -08:00
test Fixed bug 4092 - CMake support for building everything in the "test" directory 2018-02-24 08:59:58 -08:00
visualtest Renaming of guard header names to quiet -Wreserved-id-macro 2017-08-28 00:22:23 -07:00
.hgignore Updated SDL's YUV support, many thanks to Adrien Descamps 2017-11-12 22:51:12 -08:00
Android.mk Added Android build script for SDL 2017-12-16 10:40:41 -08:00
BUGS.txt BUGS.txt: Changed mailing list link to discourse.libsdl.org. 2017-04-01 00:05:25 -04:00
CMakeLists.txt cmake: Set debug library name suffix per target instead of setting it globally. Don't add a suffix on android 2018-02-25 19:22:47 +02:00
COPYING.txt Updated copyright for 2018 2018-01-03 10:03:25 -08:00
CREDITS.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
INSTALL.txt More HTTPS doc tweaks. 2017-02-16 16:59:07 -05:00
Makefile.in vulkan: Initial Vulkan support! 2017-08-27 22:15:57 -04:00
Makefile.minimal Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
Makefile.pandora pandora: Fixed compiler warning about redefining SDL_REVISION. 2017-06-18 23:00:27 +02:00
Makefile.psp PSP: Added missing object for generic TLS to Makefile. 2016-02-13 17:34:14 +01:00
Makefile.wiz Pandora: Updated SDL version in Makefile. 2016-07-19 21:01:30 +02:00
README-SDL.txt More HTTPS changes in the documentation. 2017-02-16 16:52:03 -05:00
README.txt readme: correct webpage URL to use HTTPS. 2017-02-16 13:30:34 -05:00
SDL2.spec.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
SDL2Config.cmake Fixed bug 3651 - CMake build does not install CMake package configuration 2017-08-09 19:03:10 -07:00
TODO.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
VisualC.html Fixed two typos in documentation. 2016-01-12 22:23:53 +01:00
WhatsNew.txt Added SDL_GameControllerMappingForDeviceIndex() to get the mapping for a controller before it's opened 2018-03-07 13:30:40 -08:00
autogen.sh Don't use pushd/popd in autogen.sh; Ubuntu's /bin/sh doesn't support it. 2016-12-26 22:58:58 -05:00
cmake_uninstall.cmake.in Fixed bug 3867 - Can't find install_manifest.txt when running 'uninstall' target 2017-10-12 08:44:45 -07:00
configure Fixed bug 4101 - configure needs regenerating after changeset 11894 2018-03-02 22:48:15 -08:00
configure.in mir: Disable Mir by default as Mir supports Wayland clients 2018-02-23 11:24:26 -05:00
sdl2-config.cmake.in Applied Ubuntu patch bug_822210_fix_sdl2-config.cmake_whitespace.patch 2016-10-07 15:08:37 -07:00
sdl2-config.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
sdl2.m4 Fixed bug 3429 - Update AM_PATH_SDL2() to also check for SDL2.framework 2016-09-29 16:37:08 -07:00
sdl2.pc.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00

README.txt 

                         Simple DirectMedia Layer

                                  (SDL)

                                Version 2.0

---
https://www.libsdl.org/

Simple DirectMedia Layer is a cross-platform development library designed
to provide low level access to audio, keyboard, mouse, joystick, and graphics
hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.

More extensive documentation is available in the docs directory, starting
with README.md

Enjoy!
	Sam Lantinga				(slouken@libsdl.org)