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Backends: OSX: Add Game Controller support. (#4759)

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This commit is contained in:
Stuart Carnie
2021-12-11 08:10:21 +11:00
committed by ocornut
parent 8a9fe26866
commit b720f1f03c
5 changed files with 58 additions and 0 deletions
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1
backends/imgui_impl_osx.h
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@ -5,6 +5,7 @@
// Implemented features:
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// [X] Platform: OSX clipboard is supported within core Dear ImGui (no specific code in this backend).
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// Issues:
// [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..

48
backends/imgui_impl_osx.mm
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@ -5,6 +5,7 @@
// Implemented features:
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// [X] Platform: OSX clipboard is supported within core Dear ImGui (no specific code in this backend).
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// Issues:
// [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
@ -17,9 +18,11 @@
#include "imgui_impl_osx.h"
#import <Cocoa/Cocoa.h>
#include <mach/mach_time.h>
#import <GameController/GameController.h>
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2021-12-13: Add game controller support.
// 2021-09-21: Use mach_absolute_time as CFAbsoluteTimeGetCurrent can jump backwards.
// 2021-08-17: Calling io.AddFocusEvent() on NSApplicationDidBecomeActiveNotification/NSApplicationDidResignActiveNotification events.
// 2021-06-23: Inputs: Added a fix for shortcuts using CTRL key instead of CMD key.
@ -234,6 +237,50 @@ static void ImGui_ImplOSX_UpdateMouseCursorAndButtons()
}
}
void ImGui_ImplOSX_UpdateGamepads()
{
ImGuiIO& io = ImGui::GetIO();
memset(io.NavInputs, 0, sizeof(io.NavInputs));
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
return;
GCController* controller;
if (@available(macOS 11.0, *))
controller = GCController.current;
else
controller = GCController.controllers.firstObject;
if (controller == nil || controller.extendedGamepad == nil)
{
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
return;
}
GCExtendedGamepad* gp = controller.extendedGamepad;
#define MAP_BUTTON(NAV_NO, NAME) { io.NavInputs[NAV_NO] = gp.NAME.isPressed ? 1.0 : 0.0; }
MAP_BUTTON(ImGuiNavInput_Activate, buttonA);
MAP_BUTTON(ImGuiNavInput_Cancel, buttonB);
MAP_BUTTON(ImGuiNavInput_Menu, buttonX);
MAP_BUTTON(ImGuiNavInput_Input, buttonY);
MAP_BUTTON(ImGuiNavInput_DpadLeft, dpad.left);
MAP_BUTTON(ImGuiNavInput_DpadRight, dpad.right);
MAP_BUTTON(ImGuiNavInput_DpadUp, dpad.up);
MAP_BUTTON(ImGuiNavInput_DpadDown, dpad.down);
MAP_BUTTON(ImGuiNavInput_FocusPrev, leftShoulder);
MAP_BUTTON(ImGuiNavInput_FocusNext, rightShoulder);
MAP_BUTTON(ImGuiNavInput_TweakSlow, leftTrigger);
MAP_BUTTON(ImGuiNavInput_TweakFast, rightTrigger);
#undef MAP_BUTTON
io.NavInputs[ImGuiNavInput_LStickLeft] = gp.leftThumbstick.left.value;
io.NavInputs[ImGuiNavInput_LStickRight] = gp.leftThumbstick.right.value;
io.NavInputs[ImGuiNavInput_LStickUp] = gp.leftThumbstick.up.value;
io.NavInputs[ImGuiNavInput_LStickDown] = gp.leftThumbstick.down.value;
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
}
void ImGui_ImplOSX_NewFrame(NSView* view)
{
// Setup display size
@ -256,6 +303,7 @@ void ImGui_ImplOSX_NewFrame(NSView* view)
g_Time = current_time;
ImGui_ImplOSX_UpdateMouseCursorAndButtons();
ImGui_ImplOSX_UpdateGamepads();
}
static int mapCharacterToKey(int c)