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6b776a9989
Add SDL keycodes for keys found commonly found in the default Xkb layout, such as left tab and compose, and keys frequently used for custom modifiers such as Meta, Hyper, and Level5 Shift. As these keys aren't Unicode code points and don't have associated scancodes (at least on modern keyboards), they are placed in the new extended key code space, with bit 30 set as a flag.
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#if defined(SDL_VIDEO_DRIVER_WAYLAND) || defined(SDL_VIDEO_DRIVER_X11)
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#include "SDL_keyboard_c.h"
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#include "SDL_keysym_to_scancode_c.h"
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#include "imKStoUCS.h"
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// Extended key code mappings
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static const struct
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{
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Uint32 keysym;
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SDL_Keycode keycode;
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} keysym_to_keycode_table[] = {
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{ 0xfe03, SDLK_MODE }, // XK_ISO_Level3_Shift
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{ 0xfe11, SDLK_LEVEL5_SHIFT }, // XK_ISO_Level5_Shift
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{ 0xfe20, SDLK_LEFT_TAB }, // XK_ISO_Left_Tab
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{ 0xff20, SDLK_MULTI_KEY_COMPOSE }, // XK_Multi_key
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{ 0xffe7, SDLK_LMETA }, // XK_Meta_L
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{ 0xffe8, SDLK_RMETA }, // XK_Meta_R
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{ 0xffed, SDLK_LHYPER }, // XK_Hyper_L
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{ 0xffee, SDLK_RHYPER }, // XK_Hyper_R
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};
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SDL_Keycode SDL_GetKeyCodeFromKeySym(Uint32 keysym, Uint32 keycode, SDL_Keymod modifiers)
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{
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SDL_Keycode sdl_keycode = SDL_KeySymToUcs4(keysym);
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if (!sdl_keycode) {
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for (int i = 0; i < SDL_arraysize(keysym_to_keycode_table); ++i) {
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if (keysym == keysym_to_keycode_table[i].keysym) {
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return keysym_to_keycode_table[i].keycode;
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}
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}
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}
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if (!sdl_keycode) {
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const SDL_Scancode scancode = SDL_GetScancodeFromKeySym(keysym, keycode);
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if (scancode != SDL_SCANCODE_UNKNOWN) {
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sdl_keycode = SDL_GetKeymapKeycode(NULL, scancode, modifiers);
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}
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}
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return sdl_keycode;
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}
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#endif // SDL_VIDEO_DRIVER_WAYLAND || SDL_VIDEO_DRIVER_X11
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