ref: ba7589ba46ab1f40fe5816d80c3994e0e1957a29
dir: /textscreen/txt_spinctrl.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 <math.h> #include "doomkeys.h" #include "txt_spinctrl.h" #include "txt_gui.h" #include "txt_io.h" #include "txt_main.h" #include "txt_window.h" // Number of characters needed to represent a character static int IntWidth(int val) { if (val < 0) { return ((int) log(-val)) + 2; } else { return ((int) log(val)) + 1; } } static void TXT_SpinControlSizeCalc(TXT_UNCAST_ARG(spincontrol)) { TXT_CAST_ARG(txt_spincontrol_t, spincontrol); int minw, maxw; int w; minw = IntWidth(spincontrol->min); maxw = IntWidth(spincontrol->max); if (minw > maxw) { w = minw; } else { w = maxw; } spincontrol->widget.w = w + 4; spincontrol->widget.h = 1; } static void TXT_SpinControlDrawer(TXT_UNCAST_ARG(spincontrol), int selected) { TXT_CAST_ARG(txt_spincontrol_t, spincontrol); char buf[20]; unsigned int i; TXT_FGColor(TXT_COLOR_BRIGHT_WHITE); TXT_BGColor(TXT_COLOR_BLUE, 0); TXT_DrawString("< "); // Choose background color if (selected) { TXT_BGColor(TXT_COLOR_GREY, 0); } else { TXT_BGColor(TXT_COLOR_BLUE, 0); } sprintf(buf, "%i", *spincontrol->value); for (i=strlen(buf); i<spincontrol->widget.w - 4; ++i) { TXT_DrawString(" "); } TXT_DrawString(buf); TXT_BGColor(TXT_COLOR_BLUE, 0); TXT_DrawString(" >"); } static void TXT_SpinControlDestructor(TXT_UNCAST_ARG(spincontrol)) { } static int TXT_SpinControlKeyPress(TXT_UNCAST_ARG(spincontrol), int key) { TXT_CAST_ARG(txt_spincontrol_t, spincontrol); if (key == KEY_LEFTARROW) { --*spincontrol->value; if (*spincontrol->value < spincontrol->min) { *spincontrol->value = spincontrol->min; } return 1; } if (key == KEY_RIGHTARROW) { ++*spincontrol->value; if (*spincontrol->value > spincontrol->max) { *spincontrol->value = spincontrol->max; } return 1; } return 0; } static void TXT_SpinControlMousePress(TXT_UNCAST_ARG(spincontrol), int x, int y, int b) { TXT_CAST_ARG(txt_spincontrol_t, spincontrol); unsigned int rel_x; rel_x = x - spincontrol->widget.x; if (rel_x < 2) { TXT_SpinControlKeyPress(spincontrol, KEY_LEFTARROW); } else if (rel_x >= spincontrol->widget.w - 2) { TXT_SpinControlKeyPress(spincontrol, KEY_RIGHTARROW); } } txt_widget_class_t txt_spincontrol_class = { TXT_SpinControlSizeCalc, TXT_SpinControlDrawer, TXT_SpinControlKeyPress, TXT_SpinControlDestructor, TXT_SpinControlMousePress, NULL, }; txt_spincontrol_t *TXT_NewSpinControl(int *value, int min, int max) { txt_spincontrol_t *spincontrol; spincontrol = malloc(sizeof(txt_spincontrol_t)); TXT_InitWidget(spincontrol, &txt_spincontrol_class); spincontrol->value = value; spincontrol->min = min; spincontrol->max = max; return spincontrol; }