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Correctly handle imgui mouse/keyboard capture

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bloeys
2024-04-11 22:07:38 +04:00
parent 80ce6d60d2
commit 20ed804d2a
2 changed files with 71 additions and 42 deletions
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47
engine/engine.go
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@ -15,6 +15,10 @@ import (
var (
isInited = false
isSdlButtonLeftDown = false
isSdlButtonMiddleDown = false
isSdlButtonRightDown = false
)
type Window struct {
@ -29,7 +33,9 @@ func (w *Window) handleInputs() {
input.EventLoopStart()
imIo := imgui.CurrentIO()
// @TODO: Would be nice to have imgui package process its own events via a callback instead of it being part of engine code
imguiCaptureMouse := imIo.WantCaptureMouse()
imguiCaptureKeyboard := imIo.WantCaptureKeyboard()
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
//Fire callbacks
@ -42,14 +48,18 @@ func (w *Window) handleInputs() {
case *sdl.MouseWheelEvent:
input.HandleMouseWheelEvent(e)
if !imguiCaptureMouse {
input.HandleMouseWheelEvent(e)
}
xDelta, yDelta := input.GetMouseWheelMotion()
imIo.AddMouseWheelDelta(float32(xDelta), float32(yDelta))
imIo.AddMouseWheelDelta(float32(e.X), float32(e.Y))
case *sdl.KeyboardEvent:
input.HandleKeyboardEvent(e)
if !imguiCaptureKeyboard {
input.HandleKeyboardEvent(e)
}
imIo.AddKeyEvent(nmageimgui.SdlScancodeToImGuiKey(e.Keysym.Scancode), e.Type == sdl.KEYDOWN)
// Send modifier key updates to imgui
@ -73,12 +83,29 @@ func (w *Window) handleInputs() {
imIo.AddInputCharactersUTF8(e.GetText())
case *sdl.MouseButtonEvent:
input.HandleMouseBtnEvent(e)
if !imguiCaptureMouse {
input.HandleMouseBtnEvent(e)
}
isPressed := e.State == sdl.PRESSED
if e.Button == sdl.BUTTON_LEFT {
isSdlButtonLeftDown = isPressed
} else if e.Button == sdl.BUTTON_MIDDLE {
isSdlButtonMiddleDown = isPressed
} else if e.Button == sdl.BUTTON_RIGHT {
isSdlButtonRightDown = isPressed
}
case *sdl.MouseMotionEvent:
input.HandleMouseMotionEvent(e)
if !imguiCaptureMouse {
input.HandleMouseMotionEvent(e)
}
case *sdl.WindowEvent:
if e.Event == sdl.WINDOWEVENT_SIZE_CHANGED {
w.handleWindowResize()
}
@ -92,9 +119,9 @@ func (w *Window) handleInputs() {
x, y, _ := sdl.GetMouseState()
imIo.SetMousePos(imgui.Vec2{X: float32(x), Y: float32(y)})
imIo.SetMouseButtonDown(0, input.MouseDown(sdl.BUTTON_LEFT))
imIo.SetMouseButtonDown(1, input.MouseDown(sdl.BUTTON_RIGHT))
imIo.SetMouseButtonDown(2, input.MouseDown(sdl.BUTTON_MIDDLE))
imIo.SetMouseButtonDown(0, isSdlButtonLeftDown)
imIo.SetMouseButtonDown(1, isSdlButtonRightDown)
imIo.SetMouseButtonDown(2, isSdlButtonMiddleDown)
}
func (w *Window) handleWindowResize() {