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Backends: OSX: Fix building with old Xcode versions.

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Builds have failed on Xcode versions that do not yet support `@available` or do not have new APIs (that are unavailable on target OS version) defined at all. Using true build time version checks fixes these issues.
This commit is contained in:
rokups 2022-01-31 14:02:22 +02:00 committed by ocornut
parent 422902dbda
commit 551ab84c2d
2 changed files with 19 additions and 16 deletions
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34
backends/imgui_impl_osx.mm
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@ -23,6 +23,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-01-31: Fix building with old Xcode versions that are missing gamepad features.
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago)with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
@ -46,6 +47,10 @@
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-07-07: Initial version.
#define APPLE_HAS_BUTTON_OPTIONS (__IPHONE_OS_VERSION_MIN_REQUIRED >= 130000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500 || __TV_OS_VERSION_MIN_REQUIRED >= 130000)
#define APPLE_HAS_CONTROLLER (__IPHONE_OS_VERSION_MIN_REQUIRED >= 140000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 110000 || __TV_OS_VERSION_MIN_REQUIRED >= 140000)
#define APPLE_HAS_THUMBSTICKS (__IPHONE_OS_VERSION_MIN_REQUIRED >= 120100 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101401 || __TV_OS_VERSION_MIN_REQUIRED >= 120100)
@class ImFocusObserver;
@class KeyEventResponder;
@ -490,12 +495,11 @@ static void ImGui_ImplOSX_UpdateGamepads()
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
return;
GCController* controller;
if (@available(macOS 11.0, *))
controller = GCController.current;
else
controller = GCController.controllers.firstObject;
#if APPLE_HAS_CONTROLLER
GCController* controller = GCController.current;
#else
GCController* controller = GCController.controllers.firstObject;
#endif
if (controller == nil || controller.extendedGamepad == nil)
{
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
@ -509,11 +513,10 @@ static void ImGui_ImplOSX_UpdateGamepads()
#define MAP_BUTTON(KEY_NO, BUTTON_NAME) { io.AddKeyEvent(KEY_NO, gp.BUTTON_NAME.isPressed); }
#define MAP_ANALOG(KEY_NO, AXIS_NAME, V0, V1) { float vn = (float)(gp.AXIS_NAME.value - V0) / (float)(V1 - V0); vn = IM_SATURATE(vn); io.AddKeyAnalogEvent(KEY_NO, vn > 0.1f, vn); }
const float thumb_dead_zone = 0.0f;
if (@available(macOS 10.15, *))
{
MAP_BUTTON(ImGuiKey_GamepadStart, buttonMenu);
MAP_BUTTON(ImGuiKey_GamepadBack, buttonOptions);
}
#if APPLE_HAS_BUTTON_OPTIONS
MAP_BUTTON(ImGuiKey_GamepadBack, buttonOptions);
#endif
MAP_BUTTON(ImGuiKey_GamepadFaceDown, buttonA); // Xbox A, PS Cross
MAP_BUTTON(ImGuiKey_GamepadFaceRight, buttonB); // Xbox B, PS Circle
MAP_BUTTON(ImGuiKey_GamepadFaceLeft, buttonX); // Xbox X, PS Square
@ -526,11 +529,10 @@ static void ImGui_ImplOSX_UpdateGamepads()
MAP_ANALOG(ImGuiKey_GamepadR1, rightShoulder, 0.0f, 1.0f);
MAP_ANALOG(ImGuiKey_GamepadL2, leftTrigger, 0.0f, 1.0f);
MAP_ANALOG(ImGuiKey_GamepadR2, rightTrigger, 0.0f, 1.0f);
if (@available(macOS 10.14.1, *))
{
MAP_BUTTON(ImGuiKey_GamepadL3, leftThumbstickButton);
MAP_BUTTON(ImGuiKey_GamepadR3, rightThumbstickButton);
}
#if APPLE_HAS_THUMBSTICKS
MAP_BUTTON(ImGuiKey_GamepadL3, leftThumbstickButton);
MAP_BUTTON(ImGuiKey_GamepadR3, rightThumbstickButton);
#endif
MAP_ANALOG(ImGuiKey_GamepadLStickLeft, leftThumbstick.xAxis, -thumb_dead_zone, -1.0f);
MAP_ANALOG(ImGuiKey_GamepadLStickRight, leftThumbstick.xAxis, +thumb_dead_zone, +1.0f);
MAP_ANALOG(ImGuiKey_GamepadLStickUp, leftThumbstick.yAxis, +thumb_dead_zone, +1.0f);

1
docs/CHANGELOG.txt
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@ -150,6 +150,7 @@ Other Changes:
- Backends: OSX: Submit gamepad data using io.AddKeyEvent/AddKeyAnalogEvent() functions, stopped writing to io.NavInputs[]. (#4858)
- Backends: OSX: Added basic Platform IME support. (#3108, #2598) [@liuliu]
- Backends: OSX: Fix Game Controller nav mapping to use shoulder for both focusing and tweak speed. (#4759)
- Backends: OSX: Fix building with old Xcode versions that are missing gamepad features. [@rokups]
- Backends: Android, GLUT: Submit keys using io.AddKeyEvent(). Submit keymods using io.AddKeyModsEvent() at the same time. (#2625)
- Backends: Android, GLUT: Submit mouse data using io.AddMousePosEvent(), AddMouseButtonEvent(), AddMouseWheelEvent() functions. (#4858)
- Backends: OpenGL3: Fixed a buffer overflow in imgui_impl_opengl3_loader.h init (added in 1.86). (#4468, #4830) [@dymk]