ref: 428027629cbeb3b63f45f5634ba7868c5ec489b7
dir: /src/setup/txt_keyinput.c/
// // Copyright(C) 2005-2014 Simon Howard // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // #include <stdlib.h> #include <string.h> #include "doomkeys.h" #include "m_misc.h" #include "txt_keyinput.h" #include "txt_gui.h" #include "txt_io.h" #include "txt_label.h" #include "txt_utf8.h" #include "txt_window.h" #define KEY_INPUT_WIDTH 8 static int KeyPressCallback(txt_window_t *window, int key, TXT_UNCAST_ARG(key_input)) { TXT_CAST_ARG(txt_key_input_t, key_input); if (key != KEY_ESCAPE) { // Got the key press. Save to the variable and close the window. *key_input->variable = key; if (key_input->check_conflicts) { TXT_EmitSignal(key_input, "set"); } TXT_CloseWindow(window); // Return to normal input mode now that we have the key. TXT_SetInputMode(TXT_INPUT_NORMAL); return 1; } else { return 0; } } static void ReleaseGrab(TXT_UNCAST_ARG(window), TXT_UNCAST_ARG(unused)) { // SDL2-TODO: Needed? // SDL_WM_GrabInput(SDL_GRAB_OFF); } static void OpenPromptWindow(txt_key_input_t *key_input) { txt_window_t *window; // Silently update when the shift button is held down. key_input->check_conflicts = !TXT_GetModifierState(TXT_MOD_SHIFT); window = TXT_MessageBox(NULL, "Press the new key..."); TXT_SetKeyListener(window, KeyPressCallback, key_input); // Switch to raw input mode while we're grabbing the key. TXT_SetInputMode(TXT_INPUT_RAW); // Grab input while reading the key. On Windows Mobile // handheld devices, the hardware keypresses are only // detected when input is grabbed. // SDL2-TODO: Needed? //SDL_WM_GrabInput(SDL_GRAB_ON); TXT_SignalConnect(window, "closed", ReleaseGrab, NULL); } static void TXT_KeyInputSizeCalc(TXT_UNCAST_ARG(key_input)) { TXT_CAST_ARG(txt_key_input_t, key_input); // All keyinputs are the same size. key_input->widget.w = KEY_INPUT_WIDTH; key_input->widget.h = 1; } static void TXT_KeyInputDrawer(TXT_UNCAST_ARG(key_input)) { TXT_CAST_ARG(txt_key_input_t, key_input); char buf[20]; int i; if (*key_input->variable == 0) { M_StringCopy(buf, "(none)", sizeof(buf)); } else { TXT_GetKeyDescription(*key_input->variable, buf, sizeof(buf)); } TXT_SetWidgetBG(key_input); TXT_FGColor(TXT_COLOR_BRIGHT_WHITE); TXT_DrawString(buf); for (i = TXT_UTF8_Strlen(buf); i < KEY_INPUT_WIDTH; ++i) { TXT_DrawString(" "); } } static void TXT_KeyInputDestructor(TXT_UNCAST_ARG(key_input)) { } static int TXT_KeyInputKeyPress(TXT_UNCAST_ARG(key_input), int key) { TXT_CAST_ARG(txt_key_input_t, key_input); if (key == KEY_ENTER) { // Open a window to prompt for the new key press OpenPromptWindow(key_input); return 1; } if (key == KEY_BACKSPACE || key == KEY_DEL) { *key_input->variable = 0; } return 0; } static void TXT_KeyInputMousePress(TXT_UNCAST_ARG(widget), int x, int y, int b) { TXT_CAST_ARG(txt_key_input_t, widget); // Clicking is like pressing enter if (b == TXT_MOUSE_LEFT) { TXT_KeyInputKeyPress(widget, KEY_ENTER); } } txt_widget_class_t txt_key_input_class = { TXT_AlwaysSelectable, TXT_KeyInputSizeCalc, TXT_KeyInputDrawer, TXT_KeyInputKeyPress, TXT_KeyInputDestructor, TXT_KeyInputMousePress, NULL, }; txt_key_input_t *TXT_NewKeyInput(int *variable) { txt_key_input_t *key_input; key_input = malloc(sizeof(txt_key_input_t)); TXT_InitWidget(key_input, &txt_key_input_class); key_input->variable = variable; return key_input; }