mcabber: mcabber/src/screen.c comparison

comparison mcabber/src/screen.c @ 105:91d3ec21c24e

[/trunk] Changeset 119 by mikael * History scrolling.

author	mikael
date	Fri, 22 Apr 2005 21:35:51 +0000
parents	fe7257d251ac
children	7fb72bc13732

comparison

equal deleted inserted replaced

-:fe7257d251ac
+:91d3ec21c24e
 typedef struct _window_entry_t {
 WINDOW *win;
 PANEL *panel;
 char *name;
 GList *hbuf;
+GList *top; // If top is not specified (NULL), we'll display the last lines
 struct list_head list;
 } window_entry_t;
 static WINDOW *rosterWnd, *chatWnd, *inputWnd;
 int n;
 int width;
 char **lines;
 GList *hbuf_head;
+// win_entry->top is the top message of the screen.  If it set to NULL, we
+// are displaying the last messages.
 // We will show the last CHAT_WIN_HEIGHT lines.
 // Let's find out where it begins.
-win_entry->hbuf = g_list_last(win_entry->hbuf);
+if (!win_entry->top ||
-hbuf_head = win_entry->hbuf;
+(g_list_position(g_list_first(win_entry->hbuf), win_entry->top) == -1)) {
-for (n=0; hbuf_head && n<(CHAT_WIN_HEIGHT-1) && g_list_previous(hbuf_head); n++)
+// Move up CHAT_WIN_HEIGHT lines
-hbuf_head = g_list_previous(hbuf_head);
+win_entry->hbuf = g_list_last(win_entry->hbuf);
+hbuf_head = win_entry->hbuf;
+win_entry->top = NULL; // (Just to make sure)
+n = 0;
+while (hbuf_head && (n < CHAT_WIN_HEIGHT-1) && g_list_previous(hbuf_head)) {
+hbuf_head = g_list_previous(hbuf_head);
+n++;
+}
+} else
+hbuf_head = win_entry->top;
 // Get the last CHAT_WIN_HEIGHT lines.
 lines = hbuf_get_lines(hbuf_head, CHAT_WIN_HEIGHT);
 // Display these lines
 currentWindow = win_entry;
 chatmode = TRUE;
 roster_setflags(winId, ROSTER_FLAG_MSG, FALSE);
 update_roster = TRUE;
-// Refresh the window entry
+// Refresh the window
 scr_UpdateWindow(win_entry);
 // Finished :)
 update_panels();
 doupdate();
 }
 }
 void scr_ShowBuddyWindow(void)
 {
-const gchar *jid = CURRENT_JID;
+const gchar *jid;
-if (jid != NULL)
+if (!current_buddy)
-scr_ShowWindow(jid);
+return;
+jid = CURRENT_JID;
+if (!jid)
+return;
+scr_ShowWindow(jid);
 top_panel(inputPanel);
 }
 void scr_WriteInWindow(const char *winId, const char *text, int TimeStamp,
 WINDOW *scr_GetInputWindow(void)
 {
 return inputWnd;
 }
-void scr_RosterTop()
+void scr_RosterTop(void)
 {
 current_buddy = buddylist;
 // XXX We should rebuild the buddylist but perhaps not everytime?
 if (chatmode)
 scr_ShowBuddyWindow();
 }
-void scr_RosterBottom()
+void scr_RosterBottom(void)
 {
 current_buddy = g_list_last(buddylist);
 // XXX We should rebuild the buddylist but perhaps not everytime?
 if (chatmode)
 scr_ShowBuddyWindow();
 }
-void scr_RosterUp()
+void scr_RosterUp(void)
 {
 if (current_buddy) {
 if (g_list_previous(current_buddy)) {
 current_buddy = g_list_previous(current_buddy);
 scr_DrawRoster();
 if (chatmode)
 scr_ShowBuddyWindow();
 }
-void scr_RosterDown()
+void scr_RosterDown(void)
 {
 if (current_buddy) {
 if (g_list_next(current_buddy)) {
 current_buddy = g_list_next(current_buddy);
 scr_DrawRoster();
 }
 // XXX We should rebuild the buddylist but perhaps not everytime?
 if (chatmode)
 scr_ShowBuddyWindow();
+}
+void scr_ScrollUp(void)
+{
+const gchar *jid;
+window_entry_t *win_entry;
+int n, nblines;
+GList *hbuf_top;
+// Get win_entry
+if (!current_buddy)
+return;
+jid = CURRENT_JID;
+if (!jid)
+return;
+win_entry  = scr_SearchWindow(jid);
+if (!win_entry)
+return;
+// Scroll up half a screen (or less)
+nblines = CHAT_WIN_HEIGHT/2-1;
+hbuf_top = win_entry->top;
+if (!hbuf_top) {
+hbuf_top = g_list_last(win_entry->hbuf);
+nblines *= 3;
+}
+n = 0;
+while (hbuf_top && n < nblines && g_list_previous(hbuf_top)) {
+hbuf_top = g_list_previous(hbuf_top);
+n++;
+}
+win_entry->top = hbuf_top;
+// Refresh the window
+scr_UpdateWindow(win_entry);
+// Finished :)
+update_panels();
+doupdate();
+}
+void scr_ScrollDown(void)
+{
+const gchar *jid;
+window_entry_t *win_entry;
+int n, nblines;
+GList *hbuf_top;
+// Get win_entry
+if (!current_buddy)
+return;
+jid = CURRENT_JID;
+if (!jid)
+return;
+win_entry  = scr_SearchWindow(jid);
+if (!win_entry)
+return;
+// Scroll down half a screen (or less)
+nblines = CHAT_WIN_HEIGHT/2-1;
+hbuf_top = win_entry->top;
+for (n=0 ; hbuf_top && n < nblines ; n++)
+hbuf_top = g_list_next(hbuf_top);
+win_entry->top = hbuf_top;
+// Check if we are at the bottom
+for (n=0 ; hbuf_top && n < CHAT_WIN_HEIGHT-1 ; n++)
+hbuf_top = g_list_next(hbuf_top);
+if (!hbuf_top)
+win_entry->top = NULL; // End reached
+// Refresh the window
+scr_UpdateWindow(win_entry);
+// Finished :)
+update_panels();
+doupdate();
 }
 //  scr_LogPrint(...)
 // Display a message in the log window.
 void scr_LogPrint(const char *fmt, ...)
 break;
 case KEY_DOWN:
 scr_RosterDown();
 break;
 case KEY_PPAGE:
-scr_LogPrint("PageUp??");
+scr_ScrollUp();
 break;
 case KEY_NPAGE:
-scr_LogPrint("PageDown??");
+scr_ScrollDown();
 break;
 case KEY_HOME:
 case 1:
 ptr_inputline = inputLine;
 inputline_offset = 0;

Mercurial > ~mikael > mcabber > hg

comparison mcabber/src/screen.c @ 105:91d3ec21c24e