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// 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 <stdlib.h>
#include <string.h>
#include "doomkeys.h"
#include "txt_keyinput.h"
#include "txt_gui.h"
#include "txt_io.h"
#include "txt_label.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;
TXT_EmitSignal(key_input, "set");
TXT_CloseWindow(window);
// Re-enable key mappings now that we have the key
TXT_EnableKeyMapping(1);
return 1;
}
else
{
return 0;
}
}
static void ReleaseGrab(TXT_UNCAST_ARG(window), TXT_UNCAST_ARG(unused))
{
SDL_WM_GrabInput(SDL_GRAB_OFF);
}
static void OpenPromptWindow(txt_key_input_t *key_input)
{
txt_window_t *window;
txt_label_t *label;
window = TXT_NewWindow(NULL);
TXT_SetWindowAction(window, TXT_HORIZ_LEFT, NULL);
TXT_SetWindowAction(window, TXT_HORIZ_CENTER,
TXT_NewWindowAbortAction(window));
TXT_SetWindowAction(window, TXT_HORIZ_RIGHT, NULL);
label = TXT_NewLabel("Press the new key...");
TXT_AddWidget(window, label);
TXT_SetWidgetAlign(label, TXT_HORIZ_CENTER);
TXT_SetKeyListener(window, KeyPressCallback, key_input);
// Disable key mappings while we prompt for the key press
TXT_EnableKeyMapping(0);
// Grab input while reading the key. On Windows Mobile
// handheld devices, the hardware keypresses are only
// detected when input is grabbed.
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), int selected)
{
TXT_CAST_ARG(txt_key_input_t, key_input);
char buf[20];
int i;
if (*key_input->variable == 0)
{
strcpy(buf, "(none)");
}
else
{
TXT_GetKeyDescription(*key_input->variable, buf);
}
if (selected)
{
TXT_BGColor(TXT_COLOR_GREY, 0);
}
else
{
TXT_BGColor(TXT_COLOR_BLUE, 0);
}
TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
TXT_DrawString(buf);
for (i=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;
}
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;
}
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