Add efacf056cd

dockerdoom/trunk/textscreen/txt_desktop.c

@@ -0,0 +1,220 @@
+// 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "doomkeys.h"
+
+#include "txt_desktop.h"
+#include "txt_gui.h"
+#include "txt_io.h"
+#include "txt_main.h"
+#include "txt_separator.h"
+#include "txt_window.h"
+
+#define MAXWINDOWS 128
+
+static char *desktop_title;
+static txt_window_t *all_windows[MAXWINDOWS];
+static int num_windows = 0;
+static int main_loop_running = 0;
+
+void TXT_AddDesktopWindow(txt_window_t *win)
+{
+    all_windows[num_windows] = win;
+    ++num_windows;
+}
+
+void TXT_RemoveDesktopWindow(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_GetActiveWindow(void)
+{
+    if (num_windows == 0)
+    {
+        return NULL;
+    }
+
+    return all_windows[num_windows - 1];
+}
+
+static void DrawDesktopBackground(const char *title)
+{
+    int i;
+    unsigned char *screendata;
+    unsigned char *p;
+
+    screendata = TXT_GetScreenData();
+    
+    // Fill the screen with gradient characters
+
+    p = screendata;
+    
+    for (i=0; i<TXT_SCREEN_W * TXT_SCREEN_H; ++i)
+    {
+        *p++ = 0xb1;
+        *p++ = TXT_COLOR_GREY | (TXT_COLOR_BLUE << 4);
+    }
+
+    // Draw the top and bottom banners
+
+    p = screendata;
+
+    for (i=0; i<TXT_SCREEN_W; ++i)
+    {
+        *p++ = ' ';
+        *p++ = TXT_COLOR_BLACK | (TXT_COLOR_GREY << 4);
+    }
+
+    p = screendata + (TXT_SCREEN_H - 1) * TXT_SCREEN_W * 2;
+
+    for (i=0; i<TXT_SCREEN_W; ++i)
+    {
+        *p++ = ' ';
+        *p++ = TXT_COLOR_BLACK | (TXT_COLOR_GREY << 4);
+    }
+
+    // Print the title
+
+    TXT_GotoXY(0, 0);
+    TXT_FGColor(TXT_COLOR_BLACK);
+    TXT_BGColor(TXT_COLOR_GREY, 0);
+
+    TXT_PutChar(' ');
+    TXT_Puts(title);
+}
+
+void TXT_SetDesktopTitle(char *title)
+{
+    free(desktop_title);
+    desktop_title = strdup(title);
+    TXT_SetWindowTitle(title);
+}
+
+void TXT_DrawDesktop(void)
+{
+    int i;
+    const char *title;
+
+    TXT_InitClipArea();
+
+    if (desktop_title == NULL)
+        title = "";
+    else
+        title = desktop_title;
+
+    DrawDesktopBackground(title);
+
+    for (i=0; i<num_windows; ++i)
+    {
+        TXT_DrawWindow(all_windows[i], i == num_windows - 1);
+    }
+
+    TXT_UpdateScreen();
+}
+
+void TXT_DispatchEvents(void)
+{
+    int c;
+
+    while ((c = TXT_GetChar()) > 0)
+    {
+        if (num_windows > 0)
+        {
+            // Send the keypress to the top window
+
+            TXT_WindowKeyPress(all_windows[num_windows - 1], c);
+        }
+    }
+}
+
+void TXT_ExitMainLoop(void)
+{
+    main_loop_running = 0;
+}
+
+void TXT_DrawASCIITable(void)
+{
+    unsigned char *screendata;
+    char buf[10];
+    int x, y;
+    int n;
+
+    screendata = TXT_GetScreenData();
+
+    TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
+    TXT_BGColor(TXT_COLOR_BLACK, 0);
+
+    for (y=0; y<16; ++y)
+    {
+        for (x=0; x<16; ++x)
+        {
+            n = y * 16 + x;
+
+            TXT_GotoXY(x * 5, y);
+            sprintf(buf, "%02x   ", n);
+            TXT_Puts(buf);
+
+            // Write the character directly to the screen memory buffer:
+
+            screendata[(y * TXT_SCREEN_W + x * 5 + 3) * 2] = n;
+        }
+    }
+
+    TXT_UpdateScreen();
+}
+
+void TXT_GUIMainLoop(void)
+{
+    main_loop_running = 1;
+
+    while (main_loop_running)
+    {
+        TXT_DispatchEvents();
+
+        // After the last window is closed, exit the loop
+
+        if (num_windows <= 0)
+        {
+            TXT_ExitMainLoop();
+        }
+        
+        TXT_DrawDesktop();
+//        TXT_DrawASCIITable();
+        TXT_Sleep(0);
+    }
+}
+