ref: dd77fbd2edd40cf82fffcc0a03ad110e9039bcb6
dir: /textscreen/txt_button.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 "txt_button.h" #include "txt_gui.h" #include "txt_io.h" #include "txt_main.h" #include "txt_utf8.h" #include "txt_window.h" static void TXT_ButtonSizeCalc(TXT_UNCAST_ARG(button)) { TXT_CAST_ARG(txt_button_t, button); button->widget.w = TXT_UTF8_Strlen(button->label); button->widget.h = 1; } static void TXT_ButtonDrawer(TXT_UNCAST_ARG(button)) { TXT_CAST_ARG(txt_button_t, button); int i; int w; w = button->widget.w; TXT_SetWidgetBG(button); TXT_DrawString(button->label); for (i = TXT_UTF8_Strlen(button->label); i < w; ++i) { TXT_DrawString(" "); } } static void TXT_ButtonDestructor(TXT_UNCAST_ARG(button)) { TXT_CAST_ARG(txt_button_t, button); free(button->label); } static int TXT_ButtonKeyPress(TXT_UNCAST_ARG(button), int key) { TXT_CAST_ARG(txt_button_t, button); if (key == KEY_ENTER) { TXT_EmitSignal(button, "pressed"); return 1; } return 0; } static void TXT_ButtonMousePress(TXT_UNCAST_ARG(button), int x, int y, int b) { TXT_CAST_ARG(txt_button_t, button); if (b == TXT_MOUSE_LEFT) { // Equivalent to pressing enter TXT_ButtonKeyPress(button, KEY_ENTER); } } txt_widget_class_t txt_button_class = { TXT_AlwaysSelectable, TXT_ButtonSizeCalc, TXT_ButtonDrawer, TXT_ButtonKeyPress, TXT_ButtonDestructor, TXT_ButtonMousePress, NULL, }; void TXT_SetButtonLabel(txt_button_t *button, char *label) { free(button->label); button->label = strdup(label); } txt_button_t *TXT_NewButton(char *label) { txt_button_t *button; button = malloc(sizeof(txt_button_t)); TXT_InitWidget(button, &txt_button_class); button->label = strdup(label); return button; } // Button with a callback set automatically txt_button_t *TXT_NewButton2(char *label, TxtWidgetSignalFunc func, void *user_data) { txt_button_t *button; button = TXT_NewButton(label); TXT_SignalConnect(button, "pressed", func, user_data); return button; }