Add input box widget, and include in guitest.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 520

4 files changed, 313 insertions, 0 deletions

diff --git a/textscreen/Makefile.am b/textscreen/Makefile.am
index 90b7e441..49a0374d 100644
--- a/textscreen/Makefile.am
+++ b/textscreen/Makefile.am
@@ -8,6 +8,7 @@ libtextscreen_a_SOURCES =                                 \
 	txt_checkbox.c           txt_checkbox.h           \
 	txt_desktop.c            txt_desktop.h            \
 	txt_gui.c                txt_gui.h                \
+	txt_inputbox.c           txt_inputbox.h           \
 	txt_io.c                 txt_io.h                 \
 	txt_main.c               txt_main.h               \
 	txt_button.c             txt_button.h             \
diff --git a/textscreen/guitest.c b/textscreen/guitest.c
index cf1079b3..23df5282 100644
--- a/textscreen/guitest.c
+++ b/textscreen/guitest.c
@@ -9,6 +9,7 @@
 #include "txt_checkbox.h"
 #include "txt_button.h"
 #include "txt_desktop.h"
+#include "txt_inputbox.h"
 #include "txt_label.h"
 #include "txt_radiobutton.h"
 #include "txt_separator.h"
@@ -22,6 +23,8 @@ enum
     RADIO_VALUE_SNAKE,
 };
 char *radio_values[] = { "Badger", "Mushroom", "Snake" };
+char *textbox_value = NULL;
+int numbox_value = 0;
 int radiobutton_value;
 txt_label_t *value_label;
 txt_window_t *firstwin;
@@ -141,6 +144,7 @@ void SetupWindow(void)
 void Window2(void)
 {
     txt_window_t *window;
+    txt_table_t *table;
     int i;
     
     window = TXT_NewWindow("Another test");
@@ -153,6 +157,14 @@ void Window2(void)
     {
         TXT_AddWidget(window, TXT_NewButton("hello there blah blah blah blah"));
     }
+
+    TXT_AddWidget(window, TXT_NewSeparator("Input boxes"));
+    table = TXT_NewTable(2);
+    TXT_AddWidget(window, table);
+    TXT_AddWidget(table, TXT_NewLabel(" String: "));
+    TXT_AddWidget(table, TXT_NewInputBox(&textbox_value, 30));
+    TXT_AddWidget(table, TXT_NewLabel(" Int: "));
+    TXT_AddWidget(table, TXT_NewIntInputBox(&numbox_value, 10));
 }
 
 void DrawASCIIChart()
diff --git a/textscreen/txt_inputbox.c b/textscreen/txt_inputbox.c
new file mode 100644
index 00000000..79c9e90e
--- /dev/null
+++ b/textscreen/txt_inputbox.c
@@ -0,0 +1,254 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "doomkeys.h"
+
+#include "txt_inputbox.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), int *w, int *h)
+{
+    TXT_CAST_ARG(txt_inputbox_t, inputbox);
+
+    // Enough space for the box + cursor
+
+    *w = inputbox->size + 1;
+    *h = 1;
+}
+
+static void TXT_InputBoxDrawer(TXT_UNCAST_ARG(inputbox), int w, int selected)
+{
+    TXT_CAST_ARG(txt_inputbox_t, inputbox);
+    int i;
+    int chars;
+
+    // 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 (isprint(key))
+    {
+        // Add character to the buffer
+
+        AddCharacter(inputbox, key);
+    }
+
+    if (key == KEY_BACKSPACE)
+    {
+        Backspace(inputbox);
+    }
+    
+    return 1;
+}
+
+txt_widget_class_t txt_inputbox_class =
+{
+    TXT_InputBoxSizeCalc,
+    TXT_InputBoxDrawer,
+    TXT_InputBoxKeyPress,
+    TXT_InputBoxDestructor,
+};
+
+txt_widget_class_t txt_int_inputbox_class =
+{
+    TXT_InputBoxSizeCalc,
+    TXT_InputBoxDrawer,
+    TXT_IntInputBoxKeyPress,
+    TXT_InputBoxDestructor,
+};
+
+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);
+
+    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;
+}
+
diff --git a/textscreen/txt_inputbox.h b/textscreen/txt_inputbox.h
new file mode 100644
index 00000000..c553df44
--- /dev/null
+++ b/textscreen/txt_inputbox.h
@@ -0,0 +1,46 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// $Id$
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// 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.
+//
+
+#ifndef TXT_INPUTBOX_H
+#define TXT_INPUTBOX_H
+
+typedef struct txt_inputbox_s txt_inputbox_t;
+
+#include "txt_widget.h"
+
+struct txt_inputbox_s
+{
+    txt_widget_t widget;
+    char *buffer;
+    int size;
+    int editing;
+    void *value;
+};
+
+txt_inputbox_t *TXT_NewInputBox(char **value, int size);
+txt_inputbox_t *TXT_NewIntInputBox(int *value, int size);
+
+#endif /* #ifndef TXT_INPUTBOX_H */
+
+