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IO: Added AddMousePosEvent(), AddMouseButtonEvent(), AddMouseWheelEvent() api + updated all Backends. (#4858) (input queue code will be next commit)

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Details: note that SDL, OSX and GLFW backends removed recording of MouseJustPressed[] which will be unnecessary with input queue (which is the NEXT commit). (#2787, #1992, #3383, #2525, #1320)
This commit is contained in:
thedmd
2022-01-17 17:22:37 +01:00
committed by ocornut
parent b6582a471a
commit b8e56dce83
10 changed files with 103 additions and 92 deletions
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25
backends/imgui_impl_sdl.cpp
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@ -18,6 +18,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
// 2022-01-17: Inputs: always calling io.AddKeyModsEvent() next and before key event (not in NewFrame) to fix input queue with very low framerates.
// 2022-01-12: Update mouse inputs using SDL_MOUSEMOTION/SDL_WINDOWEVENT_LEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.
// 2022-01-12: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.
@ -78,7 +79,6 @@ struct ImGui_ImplSDL2_Data
SDL_Window* Window;
Uint64 Time;
int MouseButtonsDown;
bool MousePressed[3];
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
char* ClipboardTextData;
bool MouseCanUseGlobalState;
@ -248,15 +248,14 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
{
case SDL_MOUSEMOTION:
{
io.MousePos = ImVec2((float)event->motion.x, (float)event->motion.y);
io.AddMousePosEvent((float)event->motion.x, (float)event->motion.y);
return true;
}
case SDL_MOUSEWHEEL:
{
if (event->wheel.x > 0) io.MouseWheelH += 1;
if (event->wheel.x < 0) io.MouseWheelH -= 1;
if (event->wheel.y > 0) io.MouseWheel += 1;
if (event->wheel.y < 0) io.MouseWheel -= 1;
float wheel_x = (event->wheel.x > 0) ? 1.0f : (event->wheel.x < 0) ? -1.0f : 0.0f;
float wheel_y = (event->wheel.y > 0) ? 1.0f : (event->wheel.y < 0) ? -1.0f : 0.0f;
io.AddMouseWheelEvent(wheel_x, wheel_y);
return true;
}
case SDL_MOUSEBUTTONDOWN:
@ -268,8 +267,7 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
if (event->button.button == SDL_BUTTON_MIDDLE) { mouse_button = 2; }
if (mouse_button == -1)
break;
if (event->type == SDL_MOUSEBUTTONDOWN)
bd->MousePressed[mouse_button] = true;
io.AddMouseButtonEvent(mouse_button, (event->type == SDL_MOUSEBUTTONDOWN));
bd->MouseButtonsDown = (event->type == SDL_MOUSEBUTTONDOWN) ? (bd->MouseButtonsDown | (1 << mouse_button)) : (bd->MouseButtonsDown & ~(1 << mouse_button));
return true;
}
@ -290,7 +288,7 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
case SDL_WINDOWEVENT:
{
if (event->window.event == SDL_WINDOWEVENT_LEAVE)
io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
if (event->window.event == SDL_WINDOWEVENT_FOCUS_GAINED)
io.AddFocusEvent(true);
else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
@ -438,16 +436,9 @@ static void ImGui_ImplSDL2_UpdateMouseData()
int window_x, window_y, mouse_x_global, mouse_y_global;
SDL_GetGlobalMouseState(&mouse_x_global, &mouse_y_global);
SDL_GetWindowPosition(bd->Window, &window_x, &window_y);
io.MousePos = ImVec2((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));
io.AddMousePosEvent((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));
}
}
// Update buttons
Uint32 mouse_buttons = SDL_GetMouseState(NULL, NULL);
io.MouseDown[0] = bd->MousePressed[0] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
io.MouseDown[1] = bd->MousePressed[1] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0;
io.MouseDown[2] = bd->MousePressed[2] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
bd->MousePressed[0] = bd->MousePressed[1] = bd->MousePressed[2] = false;
}
static void ImGui_ImplSDL2_UpdateMouseCursor()