From 96f7da6adf5d4b6eb7b6ab66bd1758a2b14d1efa Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Sun, 18 Sep 2011 14:16:27 +0000
Subject: Hook query code into setup tool, and add search results window.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2383
---
 textscreen/txt_desktop.c    | 27 +++++++++++++++++++++++++--
 textscreen/txt_desktop.h    | 19 ++++++++++++++++++-
 textscreen/txt_scrollpane.c | 18 +++++++++++++++---
 3 files changed, 58 insertions(+), 6 deletions(-)

(limited to 'textscreen')

diff --git a/textscreen/txt_desktop.c b/textscreen/txt_desktop.c
index c497f0e3..31c3921e 100644
--- a/textscreen/txt_desktop.c
+++ b/textscreen/txt_desktop.c
@@ -39,6 +39,10 @@ static txt_window_t *all_windows[MAXWINDOWS];
 static int num_windows = 0;
 static int main_loop_running = 0;
 
+static TxtIdleCallback periodic_callback = NULL;
+static void *periodic_callback_data;
+static unsigned int periodic_callback_period;
+
 void TXT_AddDesktopWindow(txt_window_t *win)
 {
     all_windows[num_windows] = win;
@@ -197,6 +201,15 @@ void TXT_DrawASCIITable(void)
     TXT_UpdateScreen();
 }
 
+void TXT_SetPeriodicCallback(TxtIdleCallback callback,
+                             void *user_data,
+                             unsigned int period)
+{
+    periodic_callback = callback;
+    periodic_callback_data = user_data;
+    periodic_callback_period = period;
+}
+
 void TXT_GUIMainLoop(void)
 {
     main_loop_running = 1;
@@ -211,10 +224,20 @@ void TXT_GUIMainLoop(void)
         {
             TXT_ExitMainLoop();
         }
-        
+
         TXT_DrawDesktop();
 //        TXT_DrawASCIITable();
-        TXT_Sleep(0);
+
+        if (periodic_callback == NULL)
+        {
+            TXT_Sleep(0);
+        }
+        else
+        {
+            TXT_Sleep(periodic_callback_period);
+
+            periodic_callback(periodic_callback_data);
+        }
     }
 }
 
diff --git a/textscreen/txt_desktop.h b/textscreen/txt_desktop.h
index 42a011e7..4b6bd4b5 100644
--- a/textscreen/txt_desktop.h
+++ b/textscreen/txt_desktop.h
@@ -30,6 +30,8 @@
 
 #include "txt_window.h"
 
+typedef void (*TxtIdleCallback)(void *user_data);
+
 void TXT_AddDesktopWindow(txt_window_t *win);
 void TXT_RemoveDesktopWindow(txt_window_t *win);
 void TXT_DrawDesktop(void);
@@ -72,6 +74,21 @@ void TXT_GUIMainLoop(void);
 
 txt_window_t *TXT_GetActiveWindow(void);
 
-#endif /* #ifndef TXT_DESKTOP_H */
+/**
+ * Set a callback function to be invoked periodically by the main
+ * loop code.
+ *
+ * @param callback      The callback to invoke, or NULL to cancel
+ *                      an existing callback.
+ * @param user_data     Extra data to pass to the callback.
+ * @param period        Maximum time between invoking each callback.
+ *                      eg. a value of 200 will cause the callback
+ *                      to be invoked at least once every 200ms.
+ */
+
+void TXT_SetPeriodicCallback(TxtIdleCallback callback,
+                             void *user_data,
+                             unsigned int period);
 
+#endif /* #ifndef TXT_DESKTOP_H */
 
diff --git a/textscreen/txt_scrollpane.c b/textscreen/txt_scrollpane.c
index 2fd45c55..dba69d30 100644
--- a/textscreen/txt_scrollpane.c
+++ b/textscreen/txt_scrollpane.c
@@ -158,6 +158,18 @@ static void TXT_ScrollPaneSizeCalc(TXT_UNCAST_ARG(scrollpane))
     {
         ++scrollpane->widget.w;
     }
+
+    if (scrollpane->child != NULL)
+    {
+        if (scrollpane->child->w < scrollpane->w)
+        {
+            scrollpane->child->w = scrollpane->w;
+        }
+        if (scrollpane->child->h < scrollpane->h)
+        {
+            scrollpane->child->h = scrollpane->h;
+        }
+    }
 }
 
 static void TXT_ScrollPaneDrawer(TXT_UNCAST_ARG(scrollpane), int selected)
@@ -382,10 +394,10 @@ static int TXT_ScrollPaneKeyPress(TXT_UNCAST_ARG(scrollpane), int key)
         // automatically move the scroll pane to show the new
         // selected item.
 
-        if (scrollpane->child->widget_class == &txt_table_class
-         && (key == KEY_UPARROW || key == KEY_DOWNARROW
+        if ((key == KEY_UPARROW || key == KEY_DOWNARROW
           || key == KEY_LEFTARROW || key == KEY_RIGHTARROW
-          || key == KEY_PGUP || key == KEY_PGDN))
+          || key == KEY_PGUP || key == KEY_PGDN)
+         && scrollpane->child->widget_class == &txt_table_class)
         {
             if (PageSelectedWidget(scrollpane, key))
             {
-- 
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