From 978ddf539803405ab8fed17e21014ee1ae69fac8 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Thu, 18 May 2006 18:48:24 +0000
Subject: Initial working text-mode GUI framework.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 480
---
 textscreen/txt_window.c | 195 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 195 insertions(+)
 create mode 100644 textscreen/txt_window.c

(limited to 'textscreen/txt_window.c')

diff --git a/textscreen/txt_window.c b/textscreen/txt_window.c
new file mode 100644
index 00000000..b50da9b4
--- /dev/null
+++ b/textscreen/txt_window.c
@@ -0,0 +1,195 @@
+// 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.
+//
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "txt_gui.h"
+#include "txt_separator.h"
+#include "txt_window.h"
+
+#define MAXWINDOWS 128
+
+static txt_window_t *all_windows[MAXWINDOWS];
+static int num_windows = 0;
+
+static void AddWindow(txt_window_t *win)
+{
+    all_windows[num_windows] = win;
+    ++num_windows;
+}
+
+static void RemoveWindow(txt_window_t *win)
+{
+    int from, to;
+
+    for (from=0, to=0; from<num_windows; ++from)
+    {
+        if (all_windows[from] != win)
+        {
+            all_windows[to] = all_windows[from];
+            ++to;
+        }
+    }
+    
+    num_windows = to;
+}
+
+txt_window_t *TXT_NewWindow(char *title, int x, int y)
+{
+    txt_window_t *win;
+
+    win = malloc(sizeof(txt_window_t));
+
+    win->title = strdup(title);
+    win->x = x;
+    win->y = y;
+    win->widgets = NULL;
+    win->num_widgets = 0;
+    win->selected = 0;
+
+    AddWindow(win);
+
+    return win;
+}
+
+void TXT_CloseWindow(txt_window_t *window)
+{
+    int i;
+
+    // Free all widgets
+
+    for (i=0; i<window->num_widgets; ++i)
+    {
+        TXT_DestroyWidget(window->widgets[i]);
+    }
+    
+    // Free window resources
+
+    free(window->widgets);
+    free(window->title);
+    free(window);
+
+    RemoveWindow(window);
+}
+
+static void TXT_WindowSize(txt_window_t *window, int *w, int *h)
+{
+    int max_width;
+    int i;
+    int ww;
+
+    max_width = 10;
+
+    for (i=0; i<window->num_widgets; ++i)
+    {
+        ww = TXT_WidgetWidth(window->widgets[i]);
+
+        if (ww > max_width)
+            max_width = ww;
+    }
+
+    *w = max_width;
+    *h = window->num_widgets;
+}
+
+static void DrawWindow(txt_window_t *window)
+{
+    int widgets_w, widgets_h;
+    int window_w, window_h;
+    int x, y;
+    int window_x, window_y;
+    int i;
+    
+    TXT_WindowSize(window, &widgets_w, &widgets_h);
+
+    // Actual window size after padding
+
+    window_w = widgets_w + 2;
+    window_h = widgets_h + 5;
+
+    // Use the x,y position as the centerpoint and find the location to 
+    // draw the window.
+
+    window_x = window->x - (window_w / 2);
+    window_y = window->y - (window_h / 2);
+
+    // Draw the window
+
+    TXT_DrawWindow(window->title, window_x, window_y, window_w, window_h);
+
+    // Draw all widgets
+
+    for (i=0; i<window->num_widgets; ++i)
+    {
+        TXT_GotoXY(window_x + 1, window_y + 2 + i);
+        TXT_DrawWidget(window->widgets[i], widgets_w, i == window->selected);
+    }
+
+    // Separator for action area
+
+    TXT_DrawSeparator(window_x, window_y + 2 + window->num_widgets, window_w);
+}
+
+void TXT_DrawAllWindows(void)
+{
+    int i;
+
+    TXT_DrawDesktop("Not Chocolate Doom setup");
+
+    for (i=0; i<num_windows; ++i)
+    {
+        DrawWindow(all_windows[i]);
+    }
+
+    TXT_UpdateScreen();
+}
+
+void TXT_AddWidget(txt_window_t *window, txt_widget_t *widget)
+{
+    if (window->num_widgets == 0)
+    {
+        // This is the first widget added.
+        //
+        // The first widget in a window should always be a separator.
+        // If we are not adding a separator now, add one in first.
+
+        if (widget->widget_class != &txt_separator_class)
+        {
+            txt_separator_t *separator;
+
+            separator = TXT_NewSeparator(NULL);
+
+            window->widgets = malloc(sizeof(txt_widget_t *));
+            window->widgets[0] = &separator->widget;
+            window->num_widgets = 1;
+        }
+    }
+    
+    window->widgets = realloc(window->widgets,
+                              sizeof(txt_widget_t *) * (window->num_widgets + 1));
+    window->widgets[window->num_widgets] = widget;
+    ++window->num_widgets;
+}
+
-- 
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