Add efacf056cd

dockerdoom/trunk/setup/txt_keyinput.c

@@ -0,0 +1,195 @@
+// 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;
+
+        if (key_input->check_conflicts)
+        {
+            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;
+
+    // Silently update when the shift button is held down.
+
+    key_input->check_conflicts = !TXT_GetModifierState(TXT_MOD_SHIFT);
+
+    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);
+    }
+
+    TXT_SetWidgetBG(key_input, selected);
+    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;
+}
+