1 files changed, 531 insertions, 0 deletions

diff --git a/src/contrib/SDL-3.2.20/test/checkkeys.c b/src/contrib/SDL-3.2.20/test/checkkeys.c
new file mode 100644
index 0000000..ab7df8e
--- /dev/null
+++ b/src/contrib/SDL-3.2.20/test/checkkeys.c
@@ -0,0 +1,531 @@
+/*
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+/* Simple program:  Loop, watching keystrokes
+   Note that you need to call SDL_PollEvent() or SDL_WaitEvent() to
+   pump the event loop and catch keystrokes.
+*/
+
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include <SDL3/SDL_test.h>
+
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+#include <emscripten/emscripten.h>
+#endif
+
+#define TEXT_WINDOW_OFFSET_X    2.0f
+#define TEXT_WINDOW_OFFSET_Y    (2.0f + FONT_LINE_HEIGHT)
+
+#define CURSOR_BLINK_INTERVAL_MS    500
+
+typedef struct
+{
+    SDLTest_TextWindow *textwindow;
+    char *edit_text;
+    int edit_cursor;
+    int edit_length;
+} TextWindowState;
+
+static SDLTest_CommonState *state;
+static TextWindowState *windowstates;
+static bool escape_pressed;
+static bool cursor_visible;
+static Uint64 last_cursor_change;
+static int done;
+
+static TextWindowState *GetTextWindowStateForWindowID(SDL_WindowID id)
+{
+    int i;
+
+    for (i = 0; i < state->num_windows; ++i) {
+        if (id == SDL_GetWindowID(state->windows[i])) {
+            return &windowstates[i];
+        }
+    }
+    return NULL;
+}
+
+static SDLTest_TextWindow *GetTextWindowForWindowID(SDL_WindowID id)
+{
+    TextWindowState *windowstate = GetTextWindowStateForWindowID(id);
+    if (windowstate) {
+        return windowstate->textwindow;
+    }
+    return NULL;
+}
+
+static void UpdateTextWindowInputRect(SDL_WindowID id)
+{
+    int i;
+
+    for (i = 0; i < state->num_windows; ++i) {
+        if (id == SDL_GetWindowID(state->windows[i])) {
+            SDLTest_TextWindow *textwindow = windowstates[i].textwindow;
+            int w, h;
+            SDL_Rect rect;
+            int cursor = 0;
+            int current = textwindow->current;
+            const char *current_line = textwindow->lines[current];
+
+            SDL_GetWindowSize(state->windows[i], &w, &h);
+
+            if (current_line) {
+                cursor = (int)SDL_utf8strlen(current_line) * FONT_CHARACTER_SIZE;
+            }
+
+            rect.x = (int)TEXT_WINDOW_OFFSET_X;
+            rect.y = (int)TEXT_WINDOW_OFFSET_Y + current * FONT_LINE_HEIGHT;
+            rect.w = (int)(w - (2 * TEXT_WINDOW_OFFSET_X));
+            rect.h = FONT_CHARACTER_SIZE;
+            SDL_SetTextInputArea(state->windows[i], &rect, cursor);
+            return;
+        }
+    }
+}
+
+static void print_string(char **text, size_t *maxlen, const char *fmt, ...)
+{
+    int len;
+    va_list ap;
+
+    va_start(ap, fmt);
+    len = SDL_vsnprintf(*text, *maxlen, fmt, ap);
+    if (len > 0) {
+        *text += len;
+        if (((size_t)len) < *maxlen) {
+            *maxlen -= (size_t)len;
+        } else {
+            *maxlen = 0;
+        }
+    }
+    va_end(ap);
+}
+
+static void print_modifiers(char **text, size_t *maxlen, SDL_Keymod mod)
+{
+    print_string(text, maxlen, " modifiers:");
+    if (mod == SDL_KMOD_NONE) {
+        print_string(text, maxlen, " (none)");
+        return;
+    }
+    if ((mod & SDL_KMOD_SHIFT) == SDL_KMOD_SHIFT) {
+        print_string(text, maxlen, " SHIFT");
+    } else {
+        if (mod & SDL_KMOD_LSHIFT) {
+            print_string(text, maxlen, " LSHIFT");
+        }
+        if (mod & SDL_KMOD_RSHIFT) {
+            print_string(text, maxlen, " RSHIFT");
+        }
+    }
+    if ((mod & SDL_KMOD_CTRL) == SDL_KMOD_CTRL) {
+        print_string(text, maxlen, " CTRL");
+    } else {
+        if (mod & SDL_KMOD_LCTRL) {
+            print_string(text, maxlen, " LCTRL");
+        }
+        if (mod & SDL_KMOD_RCTRL) {
+            print_string(text, maxlen, " RCTRL");
+        }
+    }
+    if ((mod & SDL_KMOD_ALT) == SDL_KMOD_ALT) {
+        print_string(text, maxlen, " ALT");
+    } else {
+        if (mod & SDL_KMOD_LALT) {
+            print_string(text, maxlen, " LALT");
+        }
+        if (mod & SDL_KMOD_RALT) {
+            print_string(text, maxlen, " RALT");
+        }
+    }
+    if ((mod & SDL_KMOD_GUI) == SDL_KMOD_GUI) {
+        print_string(text, maxlen, " GUI");
+    } else {
+        if (mod & SDL_KMOD_LGUI) {
+            print_string(text, maxlen, " LGUI");
+        }
+        if (mod & SDL_KMOD_RGUI) {
+            print_string(text, maxlen, " RGUI");
+        }
+    }
+    if (mod & SDL_KMOD_NUM) {
+        print_string(text, maxlen, " NUM");
+    }
+    if (mod & SDL_KMOD_CAPS) {
+        print_string(text, maxlen, " CAPS");
+    }
+    if (mod & SDL_KMOD_MODE) {
+        print_string(text, maxlen, " MODE");
+    }
+    if (mod & SDL_KMOD_LEVEL5) {
+        print_string(text, maxlen, " LEVEL5");
+    }
+    if (mod & SDL_KMOD_SCROLL) {
+        print_string(text, maxlen, " SCROLL");
+    }
+}
+
+static void PrintModifierState(void)
+{
+    char message[512];
+    char *spot;
+    size_t left;
+
+    spot = message;
+    left = sizeof(message);
+
+    print_modifiers(&spot, &left, SDL_GetModState());
+    SDL_Log("Initial state:%s", message);
+}
+
+static void PrintKey(SDL_KeyboardEvent *event)
+{
+    char message[512];
+    char *spot;
+    size_t left;
+
+    spot = message;
+    left = sizeof(message);
+
+    /* Print the keycode, name and state */
+    if (event->key) {
+        print_string(&spot, &left,
+                     "Key %s:  raw 0x%.2x, scancode %d = %s, keycode 0x%08X = %s ",
+                     event->down ? "pressed " : "released",
+                     event->raw,
+                     event->scancode,
+                     event->scancode == SDL_SCANCODE_UNKNOWN ? "UNKNOWN" : SDL_GetScancodeName(event->scancode),
+                     event->key, SDL_GetKeyName(event->key));
+    } else {
+        print_string(&spot, &left,
+                     "Unknown Key (raw 0x%.2x, scancode %d = %s) %s ",
+                     event->raw,
+                     event->scancode,
+                     event->scancode == SDL_SCANCODE_UNKNOWN ? "UNKNOWN" : SDL_GetScancodeName(event->scancode),
+                     event->down ? "pressed " : "released");
+    }
+    print_modifiers(&spot, &left, event->mod);
+    if (event->repeat) {
+        print_string(&spot, &left, " (repeat)");
+    }
+    SDL_Log("%s", message);
+}
+
+static void PrintText(const char *eventtype, const char *text)
+{
+    const char *spot;
+    char expanded[1024];
+
+    expanded[0] = '\0';
+    for (spot = text; *spot; ++spot) {
+        size_t length = SDL_strlen(expanded);
+        (void)SDL_snprintf(expanded + length, sizeof(expanded) - length, "\\x%.2x", (unsigned char)*spot);
+    }
+    SDL_Log("%s Text (%s): \"%s%s\"", eventtype, expanded, *text == '"' ? "\\" : "", text);
+}
+
+static void CountKeysDown(void)
+{
+    int i, count = 0, max_keys = 0;
+    const bool *keystate = SDL_GetKeyboardState(&max_keys);
+
+    for (i = 0; i < max_keys; ++i) {
+        if (keystate[i]) {
+            ++count;
+        }
+    }
+    SDL_Log("Keys down: %d", count);
+}
+
+static void DrawCursor(int i)
+{
+    SDL_FRect rect;
+    TextWindowState *windowstate = &windowstates[i];
+    SDLTest_TextWindow *textwindow = windowstate->textwindow;
+    int current = textwindow->current;
+    const char *current_line = textwindow->lines[current];
+
+    rect.x = TEXT_WINDOW_OFFSET_X;
+    if (current_line) {
+        rect.x += SDL_utf8strlen(current_line) * FONT_CHARACTER_SIZE;
+    }
+    if (windowstate->edit_cursor > 0) {
+        rect.x += (float)windowstate->edit_cursor * FONT_CHARACTER_SIZE;
+    }
+    rect.y = TEXT_WINDOW_OFFSET_Y + current * FONT_LINE_HEIGHT;
+    rect.w = FONT_CHARACTER_SIZE * 0.75f;
+    rect.h = (float)FONT_CHARACTER_SIZE;
+
+    SDL_SetRenderDrawColor(state->renderers[i], 0xAA, 0xAA, 0xAA, 255);
+    SDL_RenderFillRect(state->renderers[i], &rect);
+}
+
+static void DrawEditText(int i)
+{
+    SDL_FRect rect;
+    TextWindowState *windowstate = &windowstates[i];
+    SDLTest_TextWindow *textwindow = windowstate->textwindow;
+    int current = textwindow->current;
+    const char *current_line = textwindow->lines[current];
+
+    if (windowstate->edit_text == NULL) {
+        return;
+    }
+
+    /* Draw the highlight under the selected text */
+    if (windowstate->edit_length > 0) {
+        rect.x = TEXT_WINDOW_OFFSET_X;
+        if (current_line) {
+            rect.x += SDL_utf8strlen(current_line) * FONT_CHARACTER_SIZE;
+        }
+        if (windowstate->edit_cursor > 0) {
+            rect.x += (float)windowstate->edit_cursor * FONT_CHARACTER_SIZE;
+        }
+        rect.y = TEXT_WINDOW_OFFSET_Y + current * FONT_LINE_HEIGHT;
+        rect.w = (float)windowstate->edit_length * FONT_CHARACTER_SIZE;
+        rect.h = (float)FONT_CHARACTER_SIZE;
+
+        SDL_SetRenderDrawColor(state->renderers[i], 0xAA, 0xAA, 0xAA, 255);
+        SDL_RenderFillRect(state->renderers[i], &rect);
+    }
+
+    /* Draw the edit text */
+    rect.x = TEXT_WINDOW_OFFSET_X;
+    if (current_line) {
+        rect.x += SDL_utf8strlen(current_line) * FONT_CHARACTER_SIZE;
+    }
+    rect.y = TEXT_WINDOW_OFFSET_Y + current * FONT_LINE_HEIGHT;
+    SDL_SetRenderDrawColor(state->renderers[i], 255, 255, 0, 255);
+    SDLTest_DrawString(state->renderers[i], rect.x, rect.y, windowstate->edit_text);
+}
+
+static void loop(void)
+{
+    SDL_Event event;
+    Uint64 now;
+    int i;
+    char line[1024];
+
+    while (SDL_PollEvent(&event)) {
+        switch (event.type) {
+        case SDL_EVENT_KEY_DOWN:
+        case SDL_EVENT_KEY_UP:
+            PrintKey(&event.key);
+            if (event.type == SDL_EVENT_KEY_DOWN) {
+                switch (event.key.key) {
+                case SDLK_BACKSPACE:
+                    SDLTest_TextWindowAddText(GetTextWindowForWindowID(event.key.windowID), "\b");
+                    UpdateTextWindowInputRect(event.key.windowID);
+                    break;
+                case SDLK_RETURN:
+                    SDLTest_TextWindowAddText(GetTextWindowForWindowID(event.key.windowID), "\n");
+                    UpdateTextWindowInputRect(event.key.windowID);
+                    break;
+                default:
+                    break;
+                }
+                if (event.key.key == SDLK_ESCAPE) {
+                    /* Pressing escape twice will stop the application */
+                    if (escape_pressed) {
+                        done = 1;
+                    } else {
+                        escape_pressed = true;
+                    }
+                } else {
+                    escape_pressed = true;
+                }
+            }
+            CountKeysDown();
+            break;
+        case SDL_EVENT_TEXT_EDITING:
+        {
+            TextWindowState *windowstate = GetTextWindowStateForWindowID(event.edit.windowID);
+            if (windowstate->edit_text) {
+                SDL_free(windowstate->edit_text);
+                windowstate->edit_text = NULL;
+            }
+            if (event.edit.text && *event.edit.text) {
+                windowstate->edit_text = SDL_strdup(event.edit.text);
+            }
+            windowstate->edit_cursor = event.edit.start;
+            windowstate->edit_length = event.edit.length;
+
+            SDL_snprintf(line, sizeof(line), "EDIT %" SDL_PRIs32 ":%" SDL_PRIs32, event.edit.start, event.edit.length);
+            PrintText(line, event.edit.text);
+            break;
+        }
+        case SDL_EVENT_TEXT_INPUT:
+            PrintText("INPUT", event.text.text);
+            SDLTest_TextWindowAddText(GetTextWindowForWindowID(event.text.windowID), "%s", event.text.text);
+            UpdateTextWindowInputRect(event.text.windowID);
+            break;
+        case SDL_EVENT_FINGER_DOWN:
+        {
+            SDL_Window *window = SDL_GetWindowFromEvent(&event);
+            if (SDL_TextInputActive(window)) {
+                SDL_Log("Stopping text input for window %" SDL_PRIu32, event.tfinger.windowID);
+                SDL_StopTextInput(window);
+            } else {
+                SDL_Log("Starting text input for window %" SDL_PRIu32, event.tfinger.windowID);
+                SDL_StartTextInput(window);
+            }
+            break;
+        }
+        case SDL_EVENT_MOUSE_BUTTON_DOWN:
+            if (event.button.button == SDL_BUTTON_RIGHT) {
+                SDL_Window *window = SDL_GetWindowFromEvent(&event);
+                if (SDL_TextInputActive(window)) {
+                    SDL_Log("Stopping text input for window %" SDL_PRIu32, event.button.windowID);
+                    SDL_StopTextInput(window);
+                } else {
+                    SDL_Log("Starting text input for window %" SDL_PRIu32, event.button.windowID);
+                    SDL_StartTextInput(window);
+                }
+            }
+            break;
+        case SDL_EVENT_KEYMAP_CHANGED:
+            SDL_Log("Keymap changed!");
+            break;
+        case SDL_EVENT_QUIT:
+            done = 1;
+            break;
+        default:
+            break;
+        }
+    }
+
+    now = SDL_GetTicks();
+    for (i = 0; i < state->num_windows; i++) {
+        char caption[1024];
+
+        /* Clear the window */
+        SDL_SetRenderDrawColor(state->renderers[i], 0, 0, 0, 255);
+        SDL_RenderClear(state->renderers[i]);
+
+        /* Draw the text */
+        SDL_SetRenderDrawColor(state->renderers[i], 255, 255, 255, 255);
+        SDL_snprintf(caption, sizeof(caption), "Text input %s (click right mouse button to toggle)\n", SDL_TextInputActive(state->windows[i]) ? "enabled" : "disabled");
+        SDLTest_DrawString(state->renderers[i], TEXT_WINDOW_OFFSET_X, TEXT_WINDOW_OFFSET_X, caption);
+        SDLTest_TextWindowDisplay(windowstates[i].textwindow, state->renderers[i]);
+
+        /* Draw the cursor */
+        if ((now - last_cursor_change) >= CURSOR_BLINK_INTERVAL_MS) {
+            cursor_visible = !cursor_visible;
+            last_cursor_change = now;
+        }
+        if (cursor_visible) {
+            DrawCursor(i);
+        }
+
+        /* Draw the composition text */
+        DrawEditText(i);
+
+        SDL_RenderPresent(state->renderers[i]);
+    }
+
+    /* Slow down framerate */
+    SDL_Delay(100);
+
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+    if (done) {
+        emscripten_cancel_main_loop();
+    }
+#endif
+}
+
+int main(int argc, char *argv[])
+{
+    int i;
+
+    SDL_SetHint(SDL_HINT_WINDOWS_RAW_KEYBOARD, "1");
+
+    /* Initialize test framework */
+    state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
+    if (!state) {
+        return 1;
+    }
+    state->window_title = "CheckKeys Test";
+
+    /* Parse commandline */
+    if (!SDLTest_CommonDefaultArgs(state, argc, argv)) {
+        return 1;
+    }
+
+    /* Disable mouse emulation */
+    SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
+
+    /* Initialize SDL */
+    if (!SDLTest_CommonInit(state)) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s", SDL_GetError());
+        return 1;
+    }
+
+    windowstates = (TextWindowState *)SDL_calloc(state->num_windows, sizeof(*windowstates));
+    if (!windowstates) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't allocate text windows: %s", SDL_GetError());
+        goto done;
+    }
+
+    for (i = 0; i < state->num_windows; ++i) {
+        int w, h;
+        SDL_FRect rect;
+
+        SDL_GetWindowSize(state->windows[i], &w, &h);
+        rect.x = TEXT_WINDOW_OFFSET_X;
+        rect.y = TEXT_WINDOW_OFFSET_Y;
+        rect.w = w - (2 * TEXT_WINDOW_OFFSET_X);
+        rect.h = h - TEXT_WINDOW_OFFSET_Y;
+        windowstates[i].textwindow = SDLTest_TextWindowCreate(rect.x, rect.y, rect.w, rect.h);
+    }
+
+#ifdef SDL_PLATFORM_IOS
+    {
+        /* Creating the context creates the view, which we need to show keyboard */
+        for (i = 0; i < state->num_windows; i++) {
+            SDL_GL_CreateContext(state->windows[i]);
+        }
+    }
+#endif
+
+    for (i = 0; i < state->num_windows; ++i) {
+        UpdateTextWindowInputRect(SDL_GetWindowID(state->windows[i]));
+
+        SDL_StartTextInput(state->windows[i]);
+    }
+
+    /* Print initial state */
+    SDL_PumpEvents();
+    PrintModifierState();
+
+    /* Watch keystrokes */
+    done = 0;
+
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+    emscripten_set_main_loop(loop, 0, 1);
+#else
+    while (!done) {
+        loop();
+    }
+#endif
+
+done:
+    if (windowstates) {
+        for (i = 0; i < state->num_windows; ++i) {
+            SDLTest_TextWindowDestroy(windowstates[i].textwindow);
+        }
+        SDL_free(windowstates);
+    }
+    SDLTest_CleanupTextDrawing();
+    SDLTest_CommonQuit(state);
+    return 0;
+}