50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*
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* ImGuiInputHandler - ImGui/SDL2-based input mapping for GUI mode
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*/
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#pragma once
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#include <mutex>
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#include <queue>
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#include "InputHandler.h"
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union SDL_Event; // fwd decl to avoid including SDL here (SDL defines SDL_Event as a union)
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class ImGuiInputHandler final : public InputHandler {
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public:
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ImGuiInputHandler() = default;
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~ImGuiInputHandler() override = default;
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void Attach(Editor *ed) override
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{
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ed_ = ed;
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}
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// Translate an SDL event to editor command and enqueue if applicable.
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// Returns true if it produced a mapped command or consumed input.
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bool ProcessSDLEvent(const SDL_Event &e);
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bool Poll(MappedInput &out) override;
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private:
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std::mutex mu_;
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std::queue<MappedInput> q_;
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bool k_prefix_ = false;
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bool k_ctrl_pending_ = false; // if true, next k-suffix is treated as Ctrl- (qualifier via literal 'C' or '^')
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// Treat ESC as a Meta prefix: next key is looked up via ESC keymap
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bool esc_meta_ = false;
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// When a printable keydown generated a non-text command, suppress the very next SDL_TEXTINPUT
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// event produced by SDL for the same keystroke to avoid inserting stray characters.
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bool suppress_text_input_once_ = false;
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Editor *ed_ = nullptr; // attached editor for editor-owned uarg handling
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// Accumulators for high-resolution (trackpad) scrolling. We emit one scroll
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// command per whole step and keep the fractional remainder.
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float wheel_accum_y_ = 0.0f;
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float wheel_accum_x_ = 0.0f; // reserved for future horizontal scrolling
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};
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