Fix up svn:eol-style and svn:keywords on new files.
[u/mdw/putty] / windows / window.c
index 033cfa5..7cd306d 100644 (file)
@@ -61,6 +61,7 @@
 #define WM_IGNORE_CLIP (WM_APP + 2)
 #define WM_FULLSCR_ON_MAX (WM_APP + 3)
 #define WM_AGENT_CALLBACK (WM_APP + 4)
+#define WM_GOT_CLIPDATA (WM_APP + 6)
 
 /* Needed for Chinese support and apparently not always defined. */
 #ifndef VK_PROCESSKEY
@@ -93,6 +94,7 @@ static int is_full_screen(void);
 static void make_full_screen(void);
 static void clear_full_screen(void);
 static void flip_full_screen(void);
+static int process_clipdata(HGLOBAL clipdata, int unicode);
 
 /* Window layout information */
 static void reset_window(int);
@@ -108,7 +110,6 @@ static LPARAM pend_netevent_lParam = 0;
 static void enact_pending_netevent(void);
 static void flash_window(int mode);
 static void sys_cursor_update(void);
-static int is_shift_pressed(void);
 static int get_fullscreen_rect(RECT * ss);
 
 static int caret_x = -1, caret_y = -1;
@@ -127,6 +128,9 @@ static const struct telnet_special *specials = NULL;
 static HMENU specials_menu = NULL;
 static int n_specials = 0;
 
+static wchar_t *clipboard_contents;
+static size_t clipboard_length;
+
 #define TIMING_TIMER_ID 1234
 static long timing_next_time;
 
@@ -313,6 +317,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 {
     WNDCLASS wndclass;
     MSG msg;
+    HRESULT hr;
     int guess_width, guess_height;
 
     hinst = inst;
@@ -351,6 +356,18 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     init_flashwindow();
 
     /*
+     * Initialize COM.
+     */
+    hr = CoInitialize(NULL);
+    if (hr != S_OK && hr != S_FALSE) {
+        char *str = dupprintf("%s Fatal Error", appname);
+       MessageBox(NULL, "Failed to initialize COM subsystem",
+                  str, MB_OK | MB_ICONEXCLAMATION);
+       sfree(str);
+       return 1;
+    }
+
+    /*
      * Process the command line.
      */
     {
@@ -377,14 +394,21 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 
        /*
         * Process a couple of command-line options which are more
-        * easily dealt with before the line is broken up into
-        * words. These are the soon-to-be-defunct @sessionname and
-        * the internal-use-only &sharedmemoryhandle, neither of
-        * which are combined with anything else.
+        * easily dealt with before the line is broken up into words.
+        * These are the old-fashioned but convenient @sessionname and
+        * the internal-use-only &sharedmemoryhandle, neither of which
+        * are combined with anything else.
         */
        while (*p && isspace(*p))
            p++;
        if (*p == '@') {
+            /*
+             * An initial @ means that the whole of the rest of the
+             * command line should be treated as the name of a saved
+             * session, with _no quoting or escaping_. This makes it a
+             * very convenient means of automated saved-session
+             * launching, via IDM_SAVEDSESS or Windows 7 jump lists.
+             */
            int i = strlen(p);
            while (i > 1 && isspace(p[i - 1]))
                i--;
@@ -631,7 +655,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     guess_height = extra_height + font_height * cfg.height;
     {
        RECT r;
-               get_fullscreen_rect(&r);
+       get_fullscreen_rect(&r);
        if (guess_width > r.right - r.left)
            guess_width = r.right - r.left;
        if (guess_height > r.bottom - r.top)
@@ -863,6 +887,9 @@ void cleanup_exit(int code)
     }
     shutdown_help();
 
+    /* Clean up COM. */
+    CoUninitialize();
+
     exit(code);
 }
 
@@ -907,6 +934,8 @@ static void update_savedsess_menu(void)
        AppendMenu(savedsess_menu, MF_ENABLED,
                   IDM_SAVED_MIN + (i-1)*MENU_SAVED_STEP,
                   sesslist.sessions[i]);
+    if (sesslist.nsessions <= 1)
+       AppendMenu(savedsess_menu, MF_GRAYED, IDM_SAVED_MIN, "(No sessions)");
 }
 
 /*
@@ -1320,12 +1349,12 @@ debug(("\n           rect: [%d,%d %d,%d]\n", newrc.left, newrc.top, newrc.right,
 #ifdef FIXME_REMOVE_BEFORE_CHECKIN
 debug(("general_textout: done, xn=%d\n", xn));
 #endif
-    assert(xn - x == lprc->right - lprc->left);
+    assert(xn - x >= lprc->right - lprc->left);
 }
 
 /*
  * Initialise all the fonts we will need initially. There may be as many as
- * three or as few as one.  The other (poentially) twentyone fonts are done
+ * three or as few as one.  The other (potentially) twenty-one fonts are done
  * if/when they are needed.
  *
  * We also:
@@ -1902,17 +1931,6 @@ static int is_alt_pressed(void)
     return FALSE;
 }
 
-static int is_shift_pressed(void)
-{
-    BYTE keystate[256];
-    int r = GetKeyboardState(keystate);
-    if (!r)
-       return FALSE;
-    if (keystate[VK_SHIFT] & 0x80)
-       return TRUE;
-    return FALSE;
-}
-
 static int resizing;
 
 void notify_remote_exit(void *fe)
@@ -2049,7 +2067,6 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                                           / MENU_SAVED_STEP) + 1;
                    if (sessno < (unsigned)sesslist.nsessions) {
                        char *session = sesslist.sessions[sessno];
-                       /* XXX spaces? quotes? "-load"? */
                        cl = dupprintf("putty @%s", session);
                        inherit_handles = FALSE;
                        freecl = TRUE;
@@ -2107,10 +2124,12 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 
                {
                    /* Disable full-screen if resizing forbidden */
-                   HMENU m = GetSystemMenu (hwnd, FALSE);
-                   EnableMenuItem(m, IDM_FULLSCREEN, MF_BYCOMMAND | 
-                                  (cfg.resize_action == RESIZE_DISABLED)
-                                  ? MF_GRAYED : MF_ENABLED);
+                   int i;
+                   for (i = 0; i < lenof(popup_menus); i++)
+                       EnableMenuItem(popup_menus[i].menu, IDM_FULLSCREEN,
+                                      MF_BYCOMMAND | 
+                                      (cfg.resize_action == RESIZE_DISABLED)
+                                      ? MF_GRAYED : MF_ENABLED);
                    /* Gracefully unzoom if necessary */
                    if (IsZoomed(hwnd) &&
                        (cfg.resize_action == RESIZE_DISABLED)) {
@@ -2242,7 +2261,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            term_copyall(term);
            break;
          case IDM_PASTE:
-           term_do_paste(term);
+           request_paste(NULL);
            break;
          case IDM_CLRSB:
            term_clrsb(term);
@@ -2330,26 +2349,32 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            switch (message) {
              case WM_LBUTTONDOWN:
                button = MBT_LEFT;
+               wParam |= MK_LBUTTON;
                press = 1;
                break;
              case WM_MBUTTONDOWN:
                button = MBT_MIDDLE;
+               wParam |= MK_MBUTTON;
                press = 1;
                break;
              case WM_RBUTTONDOWN:
                button = MBT_RIGHT;
+               wParam |= MK_RBUTTON;
                press = 1;
                break;
              case WM_LBUTTONUP:
                button = MBT_LEFT;
+               wParam &= ~MK_LBUTTON;
                press = 0;
                break;
              case WM_MBUTTONUP:
                button = MBT_MIDDLE;
+               wParam &= ~MK_MBUTTON;
                press = 0;
                break;
              case WM_RBUTTONUP:
                button = MBT_RIGHT;
+               wParam &= ~MK_RBUTTON;
                press = 0;
                break;
              default:
@@ -2408,7 +2433,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                           TO_CHR_X(X_POS(lParam)),
                           TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
                           wParam & MK_CONTROL, is_alt_pressed());
-               ReleaseCapture();
+               if (!(wParam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)))
+                   ReleaseCapture();
            }
        }
        return 0;
@@ -2623,7 +2649,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
         * 1) Keep the sizetip uptodate
         * 2) Make sure the window size is _stepped_ in units of the font size.
         */
-       if (cfg.resize_action != RESIZE_FONT && !is_alt_pressed()) {
+        if (cfg.resize_action == RESIZE_TERM ||
+            (cfg.resize_action == RESIZE_EITHER && !is_alt_pressed())) {
            int width, height, w, h, ew, eh;
            LPRECT r = (LPRECT) lParam;
 
@@ -2746,55 +2773,57 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            width = LOWORD(lParam);
            height = HIWORD(lParam);
 
-           if (!resizing) {
-               if (wParam == SIZE_MAXIMIZED && !was_zoomed) {
-                   was_zoomed = 1;
-                   prev_rows = term->rows;
-                   prev_cols = term->cols;
-                   if (cfg.resize_action == RESIZE_TERM) {
-                       w = width / font_width;
-                       if (w < 1) w = 1;
-                       h = height / font_height;
-                       if (h < 1) h = 1;
-
-                       term_size(term, h, w, cfg.savelines);
-                   }
-                   reset_window(0);
-               } else if (wParam == SIZE_RESTORED && was_zoomed) {
-                   was_zoomed = 0;
-                   if (cfg.resize_action == RESIZE_TERM)
-                       term_size(term, prev_rows, prev_cols, cfg.savelines);
-                   if (cfg.resize_action != RESIZE_FONT)
-                       reset_window(2);
-                   else
-                       reset_window(0);
-               }
-               /* This is an unexpected resize, these will normally happen
-                * if the window is too large. Probably either the user
-                * selected a huge font or the screen size has changed.
-                *
-                * This is also called with minimize.
-                */
-               else reset_window(-1);
-           }
-
-           /*
-            * Don't call back->size in mid-resize. (To prevent
-            * massive numbers of resize events getting sent
-            * down the connection during an NT opaque drag.)
-            */
-           if (resizing) {
-               if (cfg.resize_action != RESIZE_FONT && !is_alt_pressed()) {
+            if (wParam == SIZE_MAXIMIZED && !was_zoomed) {
+                was_zoomed = 1;
+                prev_rows = term->rows;
+                prev_cols = term->cols;
+                if (cfg.resize_action == RESIZE_TERM) {
+                    w = width / font_width;
+                    if (w < 1) w = 1;
+                    h = height / font_height;
+                    if (h < 1) h = 1;
+
+                    term_size(term, h, w, cfg.savelines);
+                }
+                reset_window(0);
+            } else if (wParam == SIZE_RESTORED && was_zoomed) {
+                was_zoomed = 0;
+                if (cfg.resize_action == RESIZE_TERM) {
+                    w = (width-cfg.window_border*2) / font_width;
+                    if (w < 1) w = 1;
+                    h = (height-cfg.window_border*2) / font_height;
+                    if (h < 1) h = 1;
+                    term_size(term, h, w, cfg.savelines);
+                    reset_window(2);
+                } else if (cfg.resize_action != RESIZE_FONT)
+                    reset_window(2);
+                else
+                    reset_window(0);
+            } else if (wParam == SIZE_MINIMIZED) {
+                /* do nothing */
+           } else if (cfg.resize_action == RESIZE_TERM ||
+                       (cfg.resize_action == RESIZE_EITHER &&
+                        !is_alt_pressed())) {
+                w = (width-cfg.window_border*2) / font_width;
+                if (w < 1) w = 1;
+                h = (height-cfg.window_border*2) / font_height;
+                if (h < 1) h = 1;
+
+                if (resizing) {
+                    /*
+                     * Don't call back->size in mid-resize. (To
+                     * prevent massive numbers of resize events
+                     * getting sent down the connection during an NT
+                     * opaque drag.)
+                     */
                    need_backend_resize = TRUE;
-                   w = (width-cfg.window_border*2) / font_width;
-                   if (w < 1) w = 1;
-                   h = (height-cfg.window_border*2) / font_height;
-                   if (h < 1) h = 1;
-
                    cfg.height = h;
                    cfg.width = w;
-               } else 
-                   reset_window(0);
+                } else {
+                    term_size(term, h, w, cfg.savelines);
+                }
+            } else {
+                reset_window(0);
            }
        }
        sys_cursor_update();
@@ -3004,6 +3033,10 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            sfree(c);
        }
        return 0;
+      case WM_GOT_CLIPDATA:
+       if (process_clipdata((HGLOBAL)lParam, wParam))
+           term_do_paste(term);
+       return 0;
       default:
        if (message == wm_mousewheel || message == WM_MOUSEWHEEL) {
            int shift_pressed=0, control_pressed=0;
@@ -3037,16 +3070,22 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 
                if (send_raw_mouse &&
                    !(cfg.mouse_override && shift_pressed)) {
-                   /* send a mouse-down followed by a mouse up */
-                   term_mouse(term, b, translate_button(b),
-                              MA_CLICK,
-                              TO_CHR_X(X_POS(lParam)),
-                              TO_CHR_Y(Y_POS(lParam)), shift_pressed,
-                              control_pressed, is_alt_pressed());
-                   term_mouse(term, b, translate_button(b),
-                              MA_RELEASE, TO_CHR_X(X_POS(lParam)),
-                              TO_CHR_Y(Y_POS(lParam)), shift_pressed,
-                              control_pressed, is_alt_pressed());
+                   /* Mouse wheel position is in screen coordinates for
+                    * some reason */
+                   POINT p;
+                   p.x = X_POS(lParam); p.y = Y_POS(lParam);
+                   if (ScreenToClient(hwnd, &p)) {
+                       /* send a mouse-down followed by a mouse up */
+                       term_mouse(term, b, translate_button(b),
+                                  MA_CLICK,
+                                  TO_CHR_X(p.x),
+                                  TO_CHR_Y(p.y), shift_pressed,
+                                  control_pressed, is_alt_pressed());
+                       term_mouse(term, b, translate_button(b),
+                                  MA_RELEASE, TO_CHR_X(p.x),
+                                  TO_CHR_Y(p.y), shift_pressed,
+                                  control_pressed, is_alt_pressed());
+                   } /* else: not sure when this can fail */
                } else {
                    /* trigger a scroll */
                    term_scroll(term, 0,
@@ -3797,8 +3836,12 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            SendMessage(hwnd, WM_VSCROLL, SB_LINEDOWN, 0);
            return 0;
        }
+       if ((wParam == VK_PRIOR || wParam == VK_NEXT) && shift_state == 3) {
+           term_scroll_to_selection(term, (wParam == VK_PRIOR ? 0 : 1));
+           return 0;
+       }
        if (wParam == VK_INSERT && shift_state == 1) {
-           term_do_paste(term);
+           request_paste(NULL);
            return 0;
        }
        if (left_alt && wParam == VK_F4 && cfg.alt_f4) {
@@ -3995,7 +4038,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            *p++ = 0x1F;
            return p - output;
        }
-       if (shift_state == 2 && wParam == 0xDF) {
+       if (shift_state == 2 && (wParam == 0xDF || wParam == 0xDC)) {
            *p++ = 0x1C;
            return p - output;
        }
@@ -4200,37 +4243,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                break;
            }
            if (xkey) {
-               if (term->vt52_mode)
-                   p += sprintf((char *) p, "\x1B%c", xkey);
-               else {
-                   int app_flg = (term->app_cursor_keys && !cfg.no_applic_c);
-#if 0
-                   /*
-                    * RDB: VT100 & VT102 manuals both state the
-                    * app cursor keys only work if the app keypad
-                    * is on.
-                    * 
-                    * SGT: That may well be true, but xterm
-                    * disagrees and so does at least one
-                    * application, so I've #if'ed this out and the
-                    * behaviour is back to PuTTY's original: app
-                    * cursor and app keypad are independently
-                    * switchable modes. If anyone complains about
-                    * _this_ I'll have to put in a configurable
-                    * option.
-                    */
-                   if (!term->app_keypad_keys)
-                       app_flg = 0;
-#endif
-                   /* Useful mapping of Ctrl-arrows */
-                   if (shift_state == 2)
-                       app_flg = !app_flg;
-
-                   if (app_flg)
-                       p += sprintf((char *) p, "\x1BO%c", xkey);
-                   else
-                       p += sprintf((char *) p, "\x1B[%c", xkey);
-               }
+               p += format_arrow_key(p, term, xkey, shift_state);
                return p - output;
            }
        }
@@ -4413,16 +4426,6 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
     return -1;
 }
 
-void request_paste(void *frontend)
-{
-    /*
-     * In Windows, pasting is synchronous: we can read the
-     * clipboard with no difficulty, so request_paste() can just go
-     * ahead and paste.
-     */
-    term_do_paste(term);
-}
-
 void set_title(void *frontend, char *title)
 {
     sfree(window_name);
@@ -4896,46 +4899,89 @@ void write_clip(void *frontend, wchar_t * data, int *attr, int len, int must_des
        SendMessage(hwnd, WM_IGNORE_CLIP, FALSE, 0);
 }
 
-void get_clip(void *frontend, wchar_t ** p, int *len)
+static DWORD WINAPI clipboard_read_threadfunc(void *param)
 {
-    static HGLOBAL clipdata = NULL;
-    static wchar_t *converted = 0;
-    wchar_t *p2;
+    HWND hwnd = (HWND)param;
+    HGLOBAL clipdata;
 
-    if (converted) {
-       sfree(converted);
-       converted = 0;
-    }
-    if (!p) {
-       if (clipdata)
-           GlobalUnlock(clipdata);
-       clipdata = NULL;
-       return;
-    } else if (OpenClipboard(NULL)) {
+    if (OpenClipboard(NULL)) {
        if ((clipdata = GetClipboardData(CF_UNICODETEXT))) {
-           CloseClipboard();
-           *p = GlobalLock(clipdata);
-           if (*p) {
-               for (p2 = *p; *p2; p2++);
-               *len = p2 - *p;
-               return;
-           }
-       } else if ( (clipdata = GetClipboardData(CF_TEXT)) ) {
-           char *s;
-           int i;
-           CloseClipboard();
-           s = GlobalLock(clipdata);
+           SendMessage(hwnd, WM_GOT_CLIPDATA, (WPARAM)1, (LPARAM)clipdata);
+       } else if ((clipdata = GetClipboardData(CF_TEXT))) {
+           SendMessage(hwnd, WM_GOT_CLIPDATA, (WPARAM)0, (LPARAM)clipdata);
+       }
+       CloseClipboard();
+    }
+
+    return 0;
+}
+
+static int process_clipdata(HGLOBAL clipdata, int unicode)
+{
+    sfree(clipboard_contents);
+    clipboard_contents = NULL;
+    clipboard_length = 0;
+
+    if (unicode) {
+       wchar_t *p = GlobalLock(clipdata);
+       wchar_t *p2;
+
+       if (p) {
+           /* Unwilling to rely on Windows having wcslen() */
+           for (p2 = p; *p2; p2++);
+           clipboard_length = p2 - p;
+           clipboard_contents = snewn(clipboard_length + 1, wchar_t);
+           memcpy(clipboard_contents, p, clipboard_length * sizeof(wchar_t));
+           clipboard_contents[clipboard_length] = L'\0';
+           return TRUE;
+       }
+    } else {
+       char *s = GlobalLock(clipdata);
+       int i;
+
+       if (s) {
            i = MultiByteToWideChar(CP_ACP, 0, s, strlen(s) + 1, 0, 0);
-           *p = converted = snewn(i, wchar_t);
-           MultiByteToWideChar(CP_ACP, 0, s, strlen(s) + 1, converted, i);
-           *len = i - 1;
-           return;
-       } else
-           CloseClipboard();
+           clipboard_contents = snewn(i, wchar_t);
+           MultiByteToWideChar(CP_ACP, 0, s, strlen(s) + 1,
+                               clipboard_contents, i);
+           clipboard_length = i - 1;
+           clipboard_contents[clipboard_length] = L'\0';
+           return TRUE;
+       }
     }
 
-    *p = NULL;
-    *len = 0;
+    return FALSE;
+}
+
+void request_paste(void *frontend)
+{
+    /*
+     * I always thought pasting was synchronous in Windows; the
+     * clipboard access functions certainly _look_ synchronous,
+     * unlike the X ones. But in fact it seems that in some
+     * situations the contents of the clipboard might not be
+     * immediately available, and the clipboard-reading functions
+     * may block. This leads to trouble if the application
+     * delivering the clipboard data has to get hold of it by -
+     * for example - talking over a network connection which is
+     * forwarded through this very PuTTY.
+     *
+     * Hence, we spawn a subthread to read the clipboard, and do
+     * our paste when it's finished. The thread will send a
+     * message back to our main window when it terminates, and
+     * that tells us it's OK to paste.
+     */
+    DWORD in_threadid; /* required for Win9x */
+    CreateThread(NULL, 0, clipboard_read_threadfunc,
+                hwnd, 0, &in_threadid);
+}
+
+void get_clip(void *frontend, wchar_t **p, int *len)
+{
+    if (p) {
+       *p = clipboard_contents;
+       *len = clipboard_length;
+    }
 }
 
 #if 0
@@ -4994,16 +5040,12 @@ void modalfatalbox(char *fmt, ...)
     cleanup_exit(1);
 }
 
-typedef BOOL (WINAPI *p_FlashWindowEx_t)(PFLASHWINFO);
-static p_FlashWindowEx_t p_FlashWindowEx = NULL;
+DECL_WINDOWS_FUNCTION(static, BOOL, FlashWindowEx, (PFLASHWINFO));
 
 static void init_flashwindow(void)
 {
-    HMODULE user32_module = LoadLibrary("USER32.DLL");
-    if (user32_module) {
-       p_FlashWindowEx = (p_FlashWindowEx_t)
-           GetProcAddress(user32_module, "FlashWindowEx");
-    }
+    HMODULE user32_module = load_system32_dll("user32.dll");
+    GET_WINDOWS_FUNCTION(user32_module, FlashWindowEx);
 }
 
 static BOOL flash_window_ex(DWORD dwFlags, UINT uCount, DWORD dwTimeout)
@@ -5315,9 +5357,12 @@ static void make_full_screen()
 
     reset_window(0);
 
-    /* Tick the menu item in the System menu. */
-    CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,
-                 MF_CHECKED);
+    /* Tick the menu item in the System and context menus. */
+    {
+       int i;
+       for (i = 0; i < lenof(popup_menus); i++)
+           CheckMenuItem(popup_menus[i].menu, IDM_FULLSCREEN, MF_CHECKED);
+    }
 }
 
 /*
@@ -5345,9 +5390,12 @@ static void clear_full_screen()
                     SWP_FRAMECHANGED);
     }
 
-    /* Untick the menu item in the System menu. */
-    CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,
-                 MF_UNCHECKED);
+    /* Untick the menu item in the System and context menus. */
+    {
+       int i;
+       for (i = 0; i < lenof(popup_menus); i++)
+           CheckMenuItem(popup_menus[i].menu, IDM_FULLSCREEN, MF_UNCHECKED);
+    }
 }
 
 /*