ref: 94bff80737b6e3d04ad9c02b06739a431e0396f9
dir: /textscreen/txt_inputbox.c/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // Copyright(C) 2006 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. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "doomkeys.h" #include "txt_inputbox.h" #include "txt_gui.h" #include "txt_io.h" #include "txt_main.h" #include "txt_window.h" static void SetBufferFromValue(txt_inputbox_t *inputbox); static void TXT_InputBoxSizeCalc(TXT_UNCAST_ARG(inputbox)) { TXT_CAST_ARG(txt_inputbox_t, inputbox); // Enough space for the box + cursor inputbox->widget.w = inputbox->size + 1; inputbox->widget.h = 1; } static void TXT_InputBoxDrawer(TXT_UNCAST_ARG(inputbox), int selected) { TXT_CAST_ARG(txt_inputbox_t, inputbox); int i; int chars; int w; w = inputbox->widget.w; // Select the background colour based on whether we are currently // editing, and if not, whether the widget is selected. if (inputbox->editing && selected) { TXT_BGColor(TXT_COLOR_BLACK, 0); } else if (selected) { TXT_BGColor(TXT_COLOR_GREY, 0); } else { // Not even selected TXT_BGColor(TXT_COLOR_BLUE, 0); } TXT_FGColor(TXT_COLOR_BRIGHT_WHITE); if (!inputbox->editing) { // If not editing, use the current value from inputbox->value. SetBufferFromValue(inputbox); } TXT_DrawString(inputbox->buffer); chars = strlen(inputbox->buffer); if (chars < w && inputbox->editing && selected) { TXT_BGColor(TXT_COLOR_BLACK, 1); TXT_DrawString("_"); ++chars; } for (i=chars; i < w; ++i) { TXT_DrawString(" "); } } static void TXT_InputBoxDestructor(TXT_UNCAST_ARG(inputbox)) { TXT_CAST_ARG(txt_inputbox_t, inputbox); free(inputbox->buffer); } static void Backspace(txt_inputbox_t *inputbox) { if (strlen(inputbox->buffer) > 0) { inputbox->buffer[strlen(inputbox->buffer) - 1] = '\0'; } } static void AddCharacter(txt_inputbox_t *inputbox, int key) { if (strlen(inputbox->buffer) < inputbox->size) { // Add character to the buffer inputbox->buffer[strlen(inputbox->buffer) + 1] = '\0'; inputbox->buffer[strlen(inputbox->buffer)] = key; } } static int TXT_InputBoxKeyPress(TXT_UNCAST_ARG(inputbox), int key) { TXT_CAST_ARG(txt_inputbox_t, inputbox); if (!inputbox->editing) { if (key == KEY_ENTER) { SetBufferFromValue(inputbox); inputbox->editing = 1; return 1; } return 0; } if (key == KEY_ENTER) { free(*((char **)inputbox->value)); *((char **) inputbox->value) = strdup(inputbox->buffer); inputbox->editing = 0; } if (key == KEY_ESCAPE) { inputbox->editing = 0; } if (isprint(key)) { // Add character to the buffer AddCharacter(inputbox, key); } if (key == KEY_BACKSPACE) { Backspace(inputbox); } return 1; } static int TXT_IntInputBoxKeyPress(TXT_UNCAST_ARG(inputbox), int key) { TXT_CAST_ARG(txt_inputbox_t, inputbox); if (!inputbox->editing) { if (key == KEY_ENTER) { SetBufferFromValue(inputbox); inputbox->editing = 1; return 1; } return 0; } if (key == KEY_ENTER) { *((int *) inputbox->value) = atoi(inputbox->buffer); inputbox->editing = 0; } if (key == KEY_ESCAPE) { inputbox->editing = 0; } if (isdigit(key)) { // Add character to the buffer AddCharacter(inputbox, key); } if (key == KEY_BACKSPACE) { Backspace(inputbox); } return 1; } static void TXT_InputBoxMousePress(TXT_UNCAST_ARG(inputbox), int x, int y, int b) { TXT_CAST_ARG(txt_inputbox_t, inputbox); if (b == TXT_MOUSE_LEFT) { // Make mouse clicks start editing the box if (!inputbox->editing) { // Send a simulated keypress to start editing TXT_WidgetKeyPress(inputbox, KEY_ENTER); } } } txt_widget_class_t txt_inputbox_class = { TXT_InputBoxSizeCalc, TXT_InputBoxDrawer, TXT_InputBoxKeyPress, TXT_InputBoxDestructor, TXT_InputBoxMousePress, NULL, }; txt_widget_class_t txt_int_inputbox_class = { TXT_InputBoxSizeCalc, TXT_InputBoxDrawer, TXT_IntInputBoxKeyPress, TXT_InputBoxDestructor, TXT_InputBoxMousePress, NULL, }; static void SetBufferFromValue(txt_inputbox_t *inputbox) { if (inputbox->widget.widget_class == &txt_inputbox_class) { char **value = (char **) inputbox->value; if (*value != NULL) { strncpy(inputbox->buffer, *value, inputbox->size); inputbox->buffer[inputbox->size] = '\0'; } else { strcpy(inputbox->buffer, ""); } } else if (inputbox->widget.widget_class == &txt_int_inputbox_class) { int *value = (int *) inputbox->value; sprintf(inputbox->buffer, "%i", *value); } } txt_inputbox_t *TXT_NewInputBox(char **value, int size) { txt_inputbox_t *inputbox; inputbox = malloc(sizeof(txt_inputbox_t)); TXT_InitWidget(inputbox, &txt_inputbox_class); inputbox->value = value; inputbox->size = size; inputbox->buffer = malloc(size + 1); inputbox->editing = 0; return inputbox; } txt_inputbox_t *TXT_NewIntInputBox(int *value, int size) { txt_inputbox_t *inputbox; inputbox = malloc(sizeof(txt_inputbox_t)); TXT_InitWidget(inputbox, &txt_int_inputbox_class); inputbox->value = value; inputbox->size = size; inputbox->buffer = malloc(15); inputbox->editing = 0; return inputbox; }