input_handler.cc

Go to the documentation of this file.

#include "app/emu/ui/input_handler.h"
 
#include "app/gui/core/icons.h"
#include "app/platform/sdl_compat.h"
#include "imgui/imgui.h"
 
namespace yaze {
namespace emu {
namespace ui {
 
void RenderKeyboardConfig(
    input::InputManager* manager,
    const std::function<void(const input::InputConfig&)>& on_config_changed) {
  if (!manager || !manager->backend())
    return;
 
  auto config = manager->GetConfig();
 
  ImGui::TextColored(ImVec4(1.0f, 0.8f, 0.2f, 1.0f),
                     ICON_MD_INFO " Keyboard Configuration");
  ImGui::Separator();
 
  ImGui::Text("Backend: %s", manager->backend()->GetBackendName().c_str());
  ImGui::Separator();
 
  ImGui::TextWrapped(
      "Configure keyboard bindings for SNES controller emulation. "
      "Click a button and press a key to rebind.");
  ImGui::Spacing();
 
  auto RenderKeyBind = [&](const char* label, int* key) {
    ImGui::Text("%s:", label);
    ImGui::SameLine(150);
 
    // Show current key
    const char* key_name = SDL_GetKeyName(*key);
    ImGui::PushID(label);
    if (ImGui::Button(key_name, ImVec2(120, 0))) {
      ImGui::OpenPopup("Rebind");
    }
 
    if (ImGui::BeginPopup("Rebind")) {
      ImGui::Text("Press any key...");
      ImGui::Separator();
 
      // Poll for key press (cross-version compatible)
      SDL_Event event;
      if (SDL_PollEvent(&event) &&
          event.type == platform::kEventKeyDown) {
        SDL_Keycode keycode = platform::GetKeyFromEvent(event);
        if (keycode != SDLK_UNKNOWN && keycode != SDLK_ESCAPE) {
          *key = keycode;
          ImGui::CloseCurrentPopup();
        }
      }
 
      if (ImGui::Button("Cancel", ImVec2(-1, 0))) {
        ImGui::CloseCurrentPopup();
      }
 
      ImGui::EndPopup();
    }
    ImGui::PopID();
  };
 
  // Face Buttons
  if (ImGui::CollapsingHeader("Face Buttons", ImGuiTreeNodeFlags_DefaultOpen)) {
    RenderKeyBind("A Button", &config.key_a);
    RenderKeyBind("B Button", &config.key_b);
    RenderKeyBind("X Button", &config.key_x);
    RenderKeyBind("Y Button", &config.key_y);
  }
 
  // D-Pad
  if (ImGui::CollapsingHeader("D-Pad", ImGuiTreeNodeFlags_DefaultOpen)) {
    RenderKeyBind("Up", &config.key_up);
    RenderKeyBind("Down", &config.key_down);
    RenderKeyBind("Left", &config.key_left);
    RenderKeyBind("Right", &config.key_right);
  }
 
  // Shoulder Buttons
  if (ImGui::CollapsingHeader("Shoulder Buttons")) {
    RenderKeyBind("L Button", &config.key_l);
    RenderKeyBind("R Button", &config.key_r);
  }
 
  // Start/Select
  if (ImGui::CollapsingHeader("Start/Select")) {
    RenderKeyBind("Start", &config.key_start);
    RenderKeyBind("Select", &config.key_select);
  }
 
  ImGui::Spacing();
  ImGui::Separator();
 
  // Input mode
  ImGui::Checkbox("Continuous Polling", &config.continuous_polling);
  if (ImGui::IsItemHovered()) {
    ImGui::SetTooltip(
        "Recommended: ON for games (detects held buttons)\nOFF for event-based "
        "input");
  }
 
  // Input capture behavior
  if (ImGui::Checkbox("Allow input while typing in UI",
                      &config.ignore_imgui_text_input)) {
    // nothing else here; tooltip below
  }
  if (ImGui::IsItemHovered()) {
    ImGui::SetTooltip(
        "When enabled, game input is not blocked by ImGui text fields.\n"
        "Useful if emulator input is blocked while typing in other panels.");
  }
 
  ImGui::Spacing();
 
  // Apply button
  if (ImGui::Button("Apply Changes", ImVec2(-1, 30))) {
    manager->SetConfig(config);
    config = manager->GetConfig();
    if (on_config_changed) {
      on_config_changed(config);
    }
  }
 
  ImGui::Spacing();
 
  // Defaults
  if (ImGui::Button("Reset to Defaults", ImVec2(-1, 30))) {
    config = input::InputConfig();  // Reset to defaults
    input::ApplyDefaultKeyBindings(config);
    manager->SetConfig(config);
    config = manager->GetConfig();
    if (on_config_changed) {
      on_config_changed(config);
    }
  }
 
  ImGui::Spacing();
  ImGui::Separator();
  ImGui::TextColored(ImVec4(0.5f, 0.5f, 0.5f, 1.0f), "Default Bindings:");
  ImGui::BulletText("A/B/X/Y: X/Z/S/A");
  ImGui::BulletText("L/R: D/C");
  ImGui::BulletText("D-Pad: Arrow Keys");
  ImGui::BulletText("Start/Select: Enter/RShift");
}
 
}  // namespace ui
}  // namespace emu
}  // namespace yaze