# window.cpp

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    00001 /* $Id: window.cpp 15627 2009-03-06 03:01:35Z belugas $ */
    00002
    00005 #include "stdafx.h"
    00006 #include <stdarg.h>
    00007 #include "openttd.h"
    00008 #include "company_func.h"
    00009 #include "gfx_func.h"
    00010 #include "console_func.h"
    00011 #include "console_gui.h"
    00012 #include "viewport_func.h"
    00013 #include "variables.h"
    00014 #include "genworld.h"
    00015 #include "blitter/factory.hpp"
    00016 #include "zoom_func.h"
    00017 #include "map_func.h"
    00018 #include "vehicle_base.h"
    00019 #include "settings_type.h"
    00020 #include "cheat_type.h"
    00021 #include "window_func.h"
    00022 #include "tilehighlight_func.h"
    00023 #include "network/network.h"
    00024 #include "querystring_gui.h"
    00025 #include "widgets/dropdown_func.h"
    00026
    00027 #include "table/sprites.h"
    00028
    00029 static Point _drag_delta;
    00030 static Window *_mouseover_last_w = NULL;
    00031
    00033 Window *_z_front_window = NULL;
    00035 Window *_z_back_window  = NULL;
    00036
    00037 /*
    00038  * Window that currently have focus. - The main purpose is to generate
    00039  * FocusLost events, not to give next window in z-order focus when a
    00040  * window is closed.
    00041  */
    00042 Window *_focused_window;
    00043
    00044 Point _cursorpos_drag_start;
    00045
    00046 int _scrollbar_start_pos;
    00047 int _scrollbar_size;
    00048 byte _scroller_click_timeout;
    00049
    00050 bool _scrolling_scrollbar;
    00051 bool _scrolling_viewport;
    00052
    00053 byte _special_mouse_mode;
    00054
    00059 void SetFocusedWindow(Window *w)
    00060 {
    00061   if (_focused_window == w) return;
    00062
    00063   /* Invalidate focused widget */
    00064   if (_focused_window != NULL && _focused_window->focused_widget != NULL) {
    00065     uint focused_widget_id = _focused_window->focused_widget - _focused_window->widget;
    00066     _focused_window->InvalidateWidget(focused_widget_id);
    00067   }
    00068
    00069   /* Remember which window was previously focused */
    00070   Window *old_focused = _focused_window;
    00071   _focused_window = w;
    00072
    00073   /* So we can inform it that it lost focus */
    00074   if (old_focused != NULL) old_focused->OnFocusLost();
    00075   if (_focused_window != NULL) _focused_window->OnFocus();
    00076 }
    00077
    00082 const Widget *GetGloballyFocusedWidget()
    00083 {
    00084   return _focused_window != NULL ? _focused_window->focused_widget : NULL;
    00085 }
    00086
    00092 bool EditBoxInGlobalFocus()
    00093 {
    00094   const Widget *wi = GetGloballyFocusedWidget();
    00095
    00096   /* The console does not have an edit box so a special case is needed. */
    00097   return (wi != NULL && wi->type == WWT_EDITBOX) ||
    00098       (_focused_window != NULL && _focused_window->window_class == WC_CONSOLE);
    00099 }
    00100
    00108 void CDECL Window::SetWidgetsDisabledState(bool disab_stat, int widgets, ...)
    00109 {
    00110   va_list wdg_list;
    00111
    00112   va_start(wdg_list, widgets);
    00113
    00114   while (widgets != WIDGET_LIST_END) {
    00115     SetWidgetDisabledState(widgets, disab_stat);
    00116     widgets = va_arg(wdg_list, int);
    00117   }
    00118
    00119   va_end(wdg_list);
    00120 }
    00121
    00129 void CDECL Window::SetWidgetsHiddenState(bool hidden_stat, int widgets, ...)
    00130 {
    00131   va_list wdg_list;
    00132
    00133   va_start(wdg_list, widgets);
    00134
    00135   while (widgets != WIDGET_LIST_END) {
    00136     SetWidgetHiddenState(widgets, hidden_stat);
    00137     widgets = va_arg(wdg_list, int);
    00138   }
    00139
    00140   va_end(wdg_list);
    00141 }
    00142
    00148 void CDECL Window::SetWidgetsLoweredState(bool lowered_stat, int widgets, ...)
    00149 {
    00150   va_list wdg_list;
    00151
    00152   va_start(wdg_list, widgets);
    00153
    00154   while (widgets != WIDGET_LIST_END) {
    00155     SetWidgetLoweredState(widgets, lowered_stat);
    00156     widgets = va_arg(wdg_list, int);
    00157   }
    00158
    00159   va_end(wdg_list);
    00160 }
    00161
    00165 void Window::RaiseButtons()
    00166 {
    00167   for (uint i = 0; i < this->widget_count; i++) {
    00168     if (this->IsWidgetLowered(i)) {
    00169       this->RaiseWidget(i);
    00170       this->InvalidateWidget(i);
    00171     }
    00172   }
    00173 }
    00174
    00179 void Window::InvalidateWidget(byte widget_index) const
    00180 {
    00181   const Widget *wi = &this->widget[widget_index];
    00182
    00183   /* Don't redraw the window if the widget is invisible or of no-type */
    00184   if (wi->type == WWT_EMPTY || IsWidgetHidden(widget_index)) return;
    00185
    00186   SetDirtyBlocks(this->left + wi->left, this->top + wi->top, this->left + wi->right + 1, this->top + wi->bottom + 1);
    00187 }
    00188
    00194 void Window::HandleButtonClick(byte widget)
    00195 {
    00196   this->LowerWidget(widget);
    00197   this->flags4 |= WF_TIMEOUT_BEGIN;
    00198   this->InvalidateWidget(widget);
    00199 }
    00200
    00205 bool Window::HasWidgetOfType(WidgetType widget_type) const
    00206 {
    00207   for (uint i = 0; i < this->widget_count; i++) {
    00208     if (this->widget[i].type == widget_type) return true;
    00209   }
    00210   return false;
    00211 }
    00212
    00213 static void StartWindowDrag(Window *w);
    00214 static void StartWindowSizing(Window *w);
    00215
    00223 static void DispatchLeftClickEvent(Window *w, int x, int y, bool double_click)
    00224 {
    00225   bool focused_widget_changed = false;
    00226   int widget = 0;
    00227   if (w->desc_flags & WDF_DEF_WIDGET) {
    00228     widget = GetWidgetFromPos(w, x, y);
    00229
    00230     /* If clicked on a window that previously did dot have focus */
    00231     if (_focused_window != w &&
    00232         (w->desc_flags & WDF_NO_FOCUS) == 0 &&           // Don't lose focus to toolbars
    00233         !(w->desc_flags & WDF_STD_BTN && widget == 0)) { // Don't change focused window if 'X' (close button) was clicked
    00234       focused_widget_changed = true;
    00235       if (_focused_window != NULL) {
    00236         _focused_window->OnFocusLost();
    00237
    00238         /* The window that lost focus may have had opened a OSK, window so close it, unless the user has clicked on the OSK window. */
    00239         if (w->window_class != WC_OSK) DeleteWindowById(WC_OSK, 0);
    00240       }
    00241       SetFocusedWindow(w);
    00242       w->OnFocus();
    00243     }
    00244
    00245     if (widget < 0) return; // exit if clicked outside of widgets
    00246
    00247     /* don't allow any interaction if the button has been disabled */
    00248     if (w->IsWidgetDisabled(widget)) return;
    00249
    00250     const Widget *wi = &w->widget[widget];
    00251
    00252     /* Clicked on a widget that is not disabled.
    00253      * So unless the clicked widget is the caption bar, change focus to this widget */
    00254     if (wi->type != WWT_CAPTION) {
    00255       /* Close the OSK window if a edit box loses focus */
    00256       if (w->focused_widget && w->focused_widget->type == WWT_EDITBOX && // An edit box was previously selected
    00257           w->focused_widget != wi &&                                 // and focus is going to change
    00258           w->window_class != WC_OSK) {                               // and it is not the OSK window
    00259         DeleteWindowById(WC_OSK, 0);
    00260       }
    00261
    00262       if (w->focused_widget != wi) {
    00263         /* Repaint the widget that loss focus. A focused edit box may else leave the caret left on the screen */
    00264         if (w->focused_widget) w->InvalidateWidget(w->focused_widget - w->widget);
    00265         focused_widget_changed = true;
    00266         w->focused_widget = wi;
    00267       }
    00268     }
    00269
    00270     if (wi->type & WWB_MASK) {
    00271       /* special widget handling for buttons*/
    00272       switch (wi->type) {
    00273         default: NOT_REACHED();
    00274         case WWT_PANEL   | WWB_PUSHBUTTON: /* WWT_PUSHBTN */
    00275         case WWT_IMGBTN  | WWB_PUSHBUTTON: /* WWT_PUSHIMGBTN */
    00276         case WWT_TEXTBTN | WWB_PUSHBUTTON: /* WWT_PUSHTXTBTN */
    00277           w->HandleButtonClick(widget);
    00278           break;
    00279       }
    00280     } else if (wi->type == WWT_SCROLLBAR || wi->type == WWT_SCROLL2BAR || wi->type == WWT_HSCROLLBAR) {
    00281       ScrollbarClickHandler(w, wi, x, y);
    00282     } else if (wi->type == WWT_EDITBOX && !focused_widget_changed) { // Only open the OSK window if clicking on an already focused edit box
    00283       /* Open the OSK window if clicked on an edit box */
    00284       QueryStringBaseWindow *qs = dynamic_cast<QueryStringBaseWindow*>(w);
    00285       if (qs != NULL) {
    00286         const int widget_index = wi - w->widget;
    00287         qs->OnOpenOSKWindow(widget_index);
    00288       }
    00289     }
    00290
    00291     /* Close any child drop down menus. If the button pressed was the drop down
    00292      * list's own button, then we should not process the click any further. */
    00293     if (HideDropDownMenu(w) == widget) return;
    00294
    00295     if (w->desc_flags & WDF_STD_BTN) {
    00296       if (widget == 0) { /* 'X' */
    00297         delete w;
    00298         return;
    00299       }
    00300
    00301       if (widget == 1) { /* 'Title bar' */
    00302         StartWindowDrag(w);
    00303         return;
    00304       }
    00305     }
    00306
    00307     if (w->desc_flags & WDF_RESIZABLE && wi->type == WWT_RESIZEBOX) {
    00308       StartWindowSizing(w);
    00309       w->InvalidateWidget(widget);
    00310       return;
    00311     }
    00312
    00313     if (w->desc_flags & WDF_STICKY_BUTTON && wi->type == WWT_STICKYBOX) {
    00314       w->flags4 ^= WF_STICKY;
    00315       w->InvalidateWidget(widget);
    00316       return;
    00317     }
    00318   }
    00319
    00320   Point pt = { x, y };
    00321
    00322   if (double_click) {
    00323     w->OnDoubleClick(pt, widget);
    00324   } else {
    00325     w->OnClick(pt, widget);
    00326   }
    00327 }
    00328
    00335 static void DispatchRightClickEvent(Window *w, int x, int y)
    00336 {
    00337   int widget = 0;
    00338
    00339   /* default tooltips handler? */
    00340   if (w->desc_flags & WDF_STD_TOOLTIPS) {
    00341     widget = GetWidgetFromPos(w, x, y);
    00342     if (widget < 0) return; // exit if clicked outside of widgets
    00343
    00344     if (w->widget[widget].tooltips != 0) {
    00345       GuiShowTooltips(w->widget[widget].tooltips);
    00346       return;
    00347     }
    00348   }
    00349
    00350   Point pt = { x, y };
    00351   w->OnRightClick(pt, widget);
    00352 }
    00353
    00361 static void DispatchMouseWheelEvent(Window *w, int widget, int wheel)
    00362 {
    00363   if (widget < 0) return;
    00364
    00365   const Widget *wi1 = &w->widget[widget];
    00366   const Widget *wi2 = &w->widget[widget + 1];
    00367
    00368   /* The listbox can only scroll if scrolling was done on the scrollbar itself,
    00369    * or on the listbox (and the next item is (must be) the scrollbar)
    00370    * XXX - should be rewritten as a widget-dependent scroller but that's
    00371    * not happening until someone rewrites the whole widget-code */
    00372   Scrollbar *sb;
    00373   if ((sb = &w->vscroll,  wi1->type == WWT_SCROLLBAR)  || (sb = &w->vscroll2, wi1->type == WWT_SCROLL2BAR)  ||
    00374       (sb = &w->vscroll2, wi2->type == WWT_SCROLL2BAR) || (sb = &w->vscroll, wi2->type == WWT_SCROLLBAR) ) {
    00375
    00376     if (sb->count > sb->cap) {
    00377       int pos = Clamp(sb->pos + wheel, 0, sb->count - sb->cap);
    00378       if (pos != sb->pos) {
    00379         sb->pos = pos;
    00380         w->SetDirty();
    00381       }
    00382     }
    00383   }
    00384 }
    00385
    00398 static void DrawOverlappedWindow(Window *w, int left, int top, int right, int bottom)
    00399 {
    00400   const Window *v;
    00401   FOR_ALL_WINDOWS_FROM_BACK_FROM(v, w->z_front) {
    00402     if (right > v->left &&
    00403         bottom > v->top &&
    00404         left < v->left + v->width &&
    00405         top < v->top + v->height) {
    00406       /* v and rectangle intersect with eeach other */
    00407       int x;
    00408
    00409       if (left < (x = v->left)) {
    00410         DrawOverlappedWindow(w, left, top, x, bottom);
    00411         DrawOverlappedWindow(w, x, top, right, bottom);
    00412         return;
    00413       }
    00414
    00415       if (right > (x = v->left + v->width)) {
    00416         DrawOverlappedWindow(w, left, top, x, bottom);
    00417         DrawOverlappedWindow(w, x, top, right, bottom);
    00418         return;
    00419       }
    00420
    00421       if (top < (x = v->top)) {
    00422         DrawOverlappedWindow(w, left, top, right, x);
    00423         DrawOverlappedWindow(w, left, x, right, bottom);
    00424         return;
    00425       }
    00426
    00427       if (bottom > (x = v->top + v->height)) {
    00428         DrawOverlappedWindow(w, left, top, right, x);
    00429         DrawOverlappedWindow(w, left, x, right, bottom);
    00430         return;
    00431       }
    00432
    00433       return;
    00434     }
    00435   }
    00436
    00437   /* Setup blitter, and dispatch a repaint event to window *wz */
    00438   DrawPixelInfo *dp = _cur_dpi;
    00439   dp->width = right - left;
    00440   dp->height = bottom - top;
    00441   dp->left = left - w->left;
    00442   dp->top = top - w->top;
    00443   dp->pitch = _screen.pitch;
    00444   dp->dst_ptr = BlitterFactoryBase::GetCurrentBlitter()->MoveTo(_screen.dst_ptr, left, top);
    00445   dp->zoom = ZOOM_LVL_NORMAL;
    00446   w->OnPaint();
    00447 }
    00448
    00457 void DrawOverlappedWindowForAll(int left, int top, int right, int bottom)
    00458 {
    00459   Window *w;
    00460   DrawPixelInfo bk;
    00461   _cur_dpi = &bk;
    00462
    00463   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00464     if (right > w->left &&
    00465         bottom > w->top &&
    00466         left < w->left + w->width &&
    00467         top < w->top + w->height) {
    00468       /* Window w intersects with the rectangle => needs repaint */
    00469       DrawOverlappedWindow(w, left, top, right, bottom);
    00470     }
    00471   }
    00472 }
    00473
    00478 void Window::SetDirty() const
    00479 {
    00480   SetDirtyBlocks(this->left, this->top, this->left + this->width, this->top + this->height);
    00481 }
    00482
    00488 void SetWindowDirty(const Window *w)
    00489 {
    00490   if (w != NULL) w->SetDirty();
    00491 }
    00492
    00496 static Window *FindChildWindow(const Window *w)
    00497 {
    00498   Window *v;
    00499   FOR_ALL_WINDOWS_FROM_BACK(v) {
    00500     if (v->parent == w) return v;
    00501   }
    00502
    00503   return NULL;
    00504 }
    00505
    00509 void Window::DeleteChildWindows() const
    00510 {
    00511   Window *child = FindChildWindow(this);
    00512   while (child != NULL) {
    00513     delete child;
    00514     child = FindChildWindow(this);
    00515   }
    00516 }
    00517
    00521 Window::~Window()
    00522 {
    00523   if (_thd.place_mode != VHM_NONE &&
    00524       _thd.window_class == this->window_class &&
    00525       _thd.window_number == this->window_number) {
    00526     ResetObjectToPlace();
    00527   }
    00528
    00529   /* Prevent Mouseover() from resetting mouse-over coordinates on a non-existing window */
    00530   if (_mouseover_last_w == this) _mouseover_last_w = NULL;
    00531
    00532   /* Make sure we don't try to access this window as the focused window when it don't exist anymore. */
    00533   if (_focused_window == this) _focused_window = NULL;
    00534
    00535   this->DeleteChildWindows();
    00536
    00537   if (this->viewport != NULL) DeleteWindowViewport(this);
    00538
    00539   this->SetDirty();
    00540
    00541   free(this->widget);
    00542
    00543   this->window_class = WC_INVALID;
    00544 }
    00545
    00552 Window *FindWindowById(WindowClass cls, WindowNumber number)
    00553 {
    00554   Window *w;
    00555   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00556     if (w->window_class == cls && w->window_number == number) return w;
    00557   }
    00558
    00559   return NULL;
    00560 }
    00561
    00568 void DeleteWindowById(WindowClass cls, WindowNumber number, bool force)
    00569 {
    00570   Window *w = FindWindowById(cls, number);
    00571   if (force || w == NULL ||
    00572       (w->desc_flags & WDF_STICKY_BUTTON) == 0 ||
    00573       (w->flags4 & WF_STICKY) == 0) {
    00574     delete w;
    00575   }
    00576 }
    00577
    00582 void DeleteWindowByClass(WindowClass cls)
    00583 {
    00584   Window *w;
    00585
    00586 restart_search:
    00587   /* When we find the window to delete, we need to restart the search
    00588    * as deleting this window could cascade in deleting (many) others
    00589    * anywhere in the z-array */
    00590   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00591     if (w->window_class == cls) {
    00592       delete w;
    00593       goto restart_search;
    00594     }
    00595   }
    00596 }
    00597
    00602 void DeleteCompanyWindows(CompanyID id)
    00603 {
    00604   Window *w;
    00605
    00606 restart_search:
    00607   /* When we find the window to delete, we need to restart the search
    00608    * as deleting this window could cascade in deleting (many) others
    00609    * anywhere in the z-array */
    00610   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00611     if (w->owner == id) {
    00612       delete w;
    00613       goto restart_search;
    00614     }
    00615   }
    00616
    00617   /* Also delete the company specific windows, that don't have a company-colour */
    00618   DeleteWindowById(WC_BUY_COMPANY, id);
    00619 }
    00620
    00626 void ChangeWindowOwner(Owner old_owner, Owner new_owner)
    00627 {
    00628   Window *w;
    00629   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00630     if (w->owner != old_owner) continue;
    00631
    00632     switch (w->window_class) {
    00633       case WC_COMPANY_COLOUR:
    00634       case WC_FINANCES:
    00635       case WC_STATION_LIST:
    00636       case WC_TRAINS_LIST:
    00637       case WC_ROADVEH_LIST:
    00638       case WC_SHIPS_LIST:
    00639       case WC_AIRCRAFT_LIST:
    00640       case WC_BUY_COMPANY:
    00641       case WC_COMPANY:
    00642         continue;
    00643
    00644       default:
    00645         w->owner = new_owner;
    00646         break;
    00647     }
    00648   }
    00649 }
    00650
    00651 static void BringWindowToFront(Window *w);
    00652
    00658 Window *BringWindowToFrontById(WindowClass cls, WindowNumber number)
    00659 {
    00660   Window *w = FindWindowById(cls, number);
    00661
    00662   if (w != NULL) {
    00663     w->flags4 |= WF_WHITE_BORDER_MASK;
    00664     BringWindowToFront(w);
    00665     w->SetDirty();
    00666   }
    00667
    00668   return w;
    00669 }
    00670
    00671 static inline bool IsVitalWindow(const Window *w)
    00672 {
    00673   switch (w->window_class) {
    00674     case WC_MAIN_TOOLBAR:
    00675     case WC_STATUS_BAR:
    00676     case WC_NEWS_WINDOW:
    00677     case WC_SEND_NETWORK_MSG:
    00678       return true;
    00679
    00680     default:
    00681       return false;
    00682   }
    00683 }
    00684
    00693 static void BringWindowToFront(Window *w)
    00694 {
    00695   Window *v = _z_front_window;
    00696
    00697   /* Bring the window just below the vital windows */
    00698   for (; v != NULL && v != w && IsVitalWindow(v); v = v->z_back) { }
    00699
    00700   if (v == NULL || w == v) return; // window is already in the right position
    00701
    00702   /* w cannot be at the top already! */
    00703   assert(w != _z_front_window);
    00704
    00705   if (w->z_back == NULL) {
    00706     _z_back_window = w->z_front;
    00707   } else {
    00708     w->z_back->z_front = w->z_front;
    00709   }
    00710   w->z_front->z_back = w->z_back;
    00711
    00712   w->z_front = v->z_front;
    00713   w->z_back = v;
    00714
    00715   if (v->z_front == NULL) {
    00716     _z_front_window = w;
    00717   } else {
    00718     v->z_front->z_back = w;
    00719   }
    00720   v->z_front = w;
    00721
    00722   w->SetDirty();
    00723 }
    00724
    00735 static void AssignWidgetToWindow(Window *w, const Widget *widget)
    00736 {
    00737   if (widget != NULL) {
    00738     uint index = 1;
    00739
    00740     for (const Widget *wi = widget; wi->type != WWT_LAST; wi++) index++;
    00741
    00742     w->widget = MallocT<Widget>(index);
    00743     memcpy(w->widget, widget, sizeof(*w->widget) * index);
    00744     w->widget_count = index - 1;
    00745   } else {
    00746     w->widget = NULL;
    00747     w->widget_count = 0;
    00748   }
    00749 }
    00750
    00765 void Window::Initialize(int x, int y, int min_width, int min_height,
    00766         WindowClass cls, const Widget *widget, int window_number)
    00767 {
    00768   /* Set up window properties */
    00769   this->window_class = cls;
    00770   this->flags4 = WF_WHITE_BORDER_MASK; // just opened windows have a white border
    00771   this->owner = INVALID_OWNER;
    00772   this->left = x;
    00773   this->top = y;
    00774   this->width = min_width;
    00775   this->height = min_height;
    00776   AssignWidgetToWindow(this, widget);
    00777   this->focused_widget = 0;
    00778   this->resize.width = min_width;
    00779   this->resize.height = min_height;
    00780   this->resize.step_width = 1;
    00781   this->resize.step_height = 1;
    00782   this->window_number = window_number;
    00783
    00784   /* Give focus to the opened window unless it is the OSK window or a text box
    00785    * of focused window has focus (so we don't interrupt typing). But if the new
    00786    * window has a text box, then take focus anyway. */
    00787   if (this->window_class != WC_OSK && (!EditBoxInGlobalFocus() || this->HasWidgetOfType(WWT_EDITBOX))) SetFocusedWindow(this);
    00788
    00789   /* Hacky way of specifying always-on-top windows. These windows are
    00790     * always above other windows because they are moved below them.
    00791     * status-bar is above news-window because it has been created earlier.
    00792     * Also, as the chat-window is excluded from this, it will always be
    00793     * the last window, thus always on top.
    00794     * XXX - Yes, ugly, probably needs something like w->always_on_top flag
    00795     * to implement correctly, but even then you need some kind of distinction
    00796     * between on-top of chat/news and status windows, because these conflict */
    00797   Window *w = _z_front_window;
    00798   if (w != NULL && this->window_class != WC_SEND_NETWORK_MSG && this->window_class != WC_HIGHSCORE && this->window_class != WC_ENDSCREEN) {
    00799     if (FindWindowById(WC_MAIN_TOOLBAR, 0)     != NULL) w = w->z_back;
    00800     if (FindWindowById(WC_STATUS_BAR, 0)       != NULL) w = w->z_back;
    00801     if (FindWindowById(WC_NEWS_WINDOW, 0)      != NULL) w = w->z_back;
    00802     if (FindWindowById(WC_SEND_NETWORK_MSG, 0) != NULL) w = w->z_back;
    00803
    00804     if (w == NULL) {
    00805       _z_back_window->z_front = this;
    00806       this->z_back = _z_back_window;
    00807       _z_back_window = this;
    00808     } else {
    00809       if (w->z_front == NULL) {
    00810         _z_front_window = this;
    00811       } else {
    00812         this->z_front = w->z_front;
    00813         w->z_front->z_back = this;
    00814       }
    00815
    00816       this->z_back = w;
    00817       w->z_front = this;
    00818     }
    00819   } else {
    00820     this->z_back = _z_front_window;
    00821     if (_z_front_window != NULL) {
    00822       _z_front_window->z_front = this;
    00823     } else {
    00824       _z_back_window = this;
    00825     }
    00826     _z_front_window = this;
    00827   }
    00828 }
    00829
    00840 void Window::FindWindowPlacementAndResize(int def_width, int def_height)
    00841 {
    00842   /* Try to make windows smaller when our window is too small.
    00843    * w->(width|height) is normally the same as min_(width|height),
    00844    * but this way the GUIs can be made a little more dynamic;
    00845    * one can use the same spec for multiple windows and those
    00846    * can then determine the real minimum size of the window. */
    00847   if (this->width != def_width || this->height != def_height) {
    00848     /* Think about the overlapping toolbars when determining the minimum window size */
    00849     int free_height = _screen.height;
    00850     const Window *wt = FindWindowById(WC_STATUS_BAR, 0);
    00851     if (wt != NULL) free_height -= wt->height;
    00852     wt = FindWindowById(WC_MAIN_TOOLBAR, 0);
    00853     if (wt != NULL) free_height -= wt->height;
    00854
    00855     int enlarge_x = max(min(def_width  - this->width,  _screen.width - this->width),  0);
    00856     int enlarge_y = max(min(def_height - this->height, free_height   - this->height), 0);
    00857
    00858     /* X and Y has to go by step.. calculate it.
    00859      * The cast to int is necessary else x/y are implicitly casted to
    00860      * unsigned int, which won't work. */
    00861     if (this->resize.step_width  > 1) enlarge_x -= enlarge_x % (int)this->resize.step_width;
    00862     if (this->resize.step_height > 1) enlarge_y -= enlarge_y % (int)this->resize.step_height;
    00863
    00864     ResizeWindow(this, enlarge_x, enlarge_y);
    00865
    00866     Point size;
    00867     Point diff;
    00868     size.x = this->width;
    00869     size.y = this->height;
    00870     diff.x = enlarge_x;
    00871     diff.y = enlarge_y;
    00872     this->OnResize(size, diff);
    00873   }
    00874
    00875   int nx = this->left;
    00876   int ny = this->top;
    00877
    00878   if (nx + this->width > _screen.width) nx -= (nx + this->width - _screen.width);
    00879
    00880   const Window *wt = FindWindowById(WC_MAIN_TOOLBAR, 0);
    00881   ny = max(ny, (wt == NULL || this == wt || this->top == 0) ? 0 : wt->height);
    00882   nx = max(nx, 0);
    00883
    00884   if (this->viewport != NULL) {
    00885     this->viewport->left += nx - this->left;
    00886     this->viewport->top  += ny - this->top;
    00887   }
    00888   this->left = nx;
    00889   this->top = ny;
    00890
    00891   this->SetDirty();
    00892 }
    00893
    00898 void Window::FindWindowPlacementAndResize(const WindowDesc *desc)
    00899 {
    00900   this->FindWindowPlacementAndResize(desc->default_width, desc->default_height);
    00901 }
    00902
    00916 Window::Window(int x, int y, int width, int height, WindowClass cls, const Widget *widget)
    00917 {
    00918   this->Initialize(x, y, width, height, cls, widget, 0);
    00919 }
    00920
    00932 static bool IsGoodAutoPlace1(int left, int top, int width, int height, Point &pos)
    00933 {
    00934   int right  = width + left;
    00935   int bottom = height + top;
    00936
    00937   if (left < 0 || top < 22 || right > _screen.width || bottom > _screen.height) return false;
    00938
    00939   /* Make sure it is not obscured by any window. */
    00940   const Window *w;
    00941   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00942     if (w->window_class == WC_MAIN_WINDOW) continue;
    00943
    00944     if (right > w->left &&
    00945         w->left + w->width > left &&
    00946         bottom > w->top &&
    00947         w->top + w->height > top) {
    00948       return false;
    00949     }
    00950   }
    00951
    00952   pos.x = left;
    00953   pos.y = top;
    00954   return true;
    00955 }
    00956
    00968 static bool IsGoodAutoPlace2(int left, int top, int width, int height, Point &pos)
    00969 {
    00970   /* Left part of the rectangle may be at most 1/4 off-screen,
    00971    * right part of the rectangle may be at most 1/2 off-screen
    00972    */
    00973   if (left < -(width>>2) || left > _screen.width - (width>>1)) return false;
    00974   /* Bottom part of the rectangle may be at most 1/4 off-screen */
    00975   if (top < 22 || top > _screen.height - (height>>2)) return false;
    00976
    00977   /* Make sure it is not obscured by any window. */
    00978   const Window *w;
    00979   FOR_ALL_WINDOWS_FROM_BACK(w) {
    00980     if (w->window_class == WC_MAIN_WINDOW) continue;
    00981
    00982     if (left + width > w->left &&
    00983         w->left + w->width > left &&
    00984         top + height > w->top &&
    00985         w->top + w->height > top) {
    00986       return false;
    00987     }
    00988   }
    00989
    00990   pos.x = left;
    00991   pos.y = top;
    00992   return true;
    00993 }
    00994
    01001 static Point GetAutoPlacePosition(int width, int height)
    01002 {
    01003   Point pt;
    01004
    01005   /* First attempt, try top-left of the screen */
    01006   if (IsGoodAutoPlace1(0, 24, width, height, pt)) return pt;
    01007
    01008   /* Second attempt, try around all existing windows with a distance of 2 pixels.
    01009    * The new window must be entirely on-screen, and not overlap with an existing window.
    01010    * Eight starting points are tried, two at each corner.
    01011    */
    01012   const Window *w;
    01013   FOR_ALL_WINDOWS_FROM_BACK(w) {
    01014     if (w->window_class == WC_MAIN_WINDOW) continue;
    01015
    01016     if (IsGoodAutoPlace1(w->left + w->width + 2, w->top, width, height, pt)) return pt;
    01017     if (IsGoodAutoPlace1(w->left - width - 2,    w->top, width, height, pt)) return pt;
    01018     if (IsGoodAutoPlace1(w->left, w->top + w->height + 2, width, height, pt)) return pt;
    01019     if (IsGoodAutoPlace1(w->left, w->top - height - 2,    width, height, pt)) return pt;
    01020     if (IsGoodAutoPlace1(w->left + w->width + 2, w->top + w->height - height, width, height, pt)) return pt;
    01021     if (IsGoodAutoPlace1(w->left - width - 2,    w->top + w->height - height, width, height, pt)) return pt;
    01022     if (IsGoodAutoPlace1(w->left + w->width - width, w->top + w->height + 2, width, height, pt)) return pt;
    01023     if (IsGoodAutoPlace1(w->left + w->width - width, w->top - height - 2,    width, height, pt)) return pt;
    01024   }
    01025
    01026   /* Third attempt, try around all existing windows with a distance of 2 pixels.
    01027    * The new window may be partly off-screen, and must not overlap with an existing window.
    01028    * Only four starting points are tried.
    01029    */
    01030   FOR_ALL_WINDOWS_FROM_BACK(w) {
    01031     if (w->window_class == WC_MAIN_WINDOW) continue;
    01032
    01033     if (IsGoodAutoPlace2(w->left + w->width + 2, w->top, width, height, pt)) return pt;
    01034     if (IsGoodAutoPlace2(w->left - width - 2,    w->top, width, height, pt)) return pt;
    01035     if (IsGoodAutoPlace2(w->left, w->top + w->height + 2, width, height, pt)) return pt;
    01036     if (IsGoodAutoPlace2(w->left, w->top - height - 2,    width, height, pt)) return pt;
    01037   }
    01038
    01039   /* Fourth and final attempt, put window at diagonal starting from (0, 24), try multiples
    01040    * of (+5, +5)
    01041    */
    01042   int left = 0, top = 24;
    01043
    01044 restart:
    01045   FOR_ALL_WINDOWS_FROM_BACK(w) {
    01046     if (w->left == left && w->top == top) {
    01047       left += 5;
    01048       top += 5;
    01049       goto restart;
    01050     }
    01051   }
    01052
    01053   pt.x = left;
    01054   pt.y = top;
    01055   return pt;
    01056 }
    01057
    01073 static Point LocalGetWindowPlacement(const WindowDesc *desc, int window_number)
    01074 {
    01075   Point pt;
    01076   Window *w;
    01077
    01078   if (desc->parent_cls != 0 /* WC_MAIN_WINDOW */ &&
    01079       (w = FindWindowById(desc->parent_cls, window_number)) != NULL &&
    01080       w->left < _screen.width - 20 && w->left > -60 && w->top < _screen.height - 20) {
    01081
    01082     pt.x = w->left + ((desc->parent_cls == WC_BUILD_TOOLBAR || desc->parent_cls == WC_SCEN_LAND_GEN) ? 0 : 10);
    01083     if (pt.x > _screen.width + 10 - desc->default_width) {
    01084       pt.x = (_screen.width + 10 - desc->default_width) - 20;
    01085     }
    01086     pt.y = w->top + ((desc->parent_cls == WC_BUILD_TOOLBAR || desc->parent_cls == WC_SCEN_LAND_GEN) ? 36 : 10);
    01087   } else {
    01088     switch (desc->left) {
    01089       case WDP_ALIGN_TBR: // Align the right side with the top toolbar
    01090         w = FindWindowById(WC_MAIN_TOOLBAR, 0);
    01091         pt.x = (w->left + w->width) - desc->default_width;
    01092         break;
    01093
    01094       case WDP_ALIGN_TBL: // Align the left side with the top toolbar
    01095         pt.x = FindWindowById(WC_MAIN_TOOLBAR, 0)->left;
    01096         break;
    01097
    01098       case WDP_AUTO: // Find a good automatic position for the window
    01099         return GetAutoPlacePosition(desc->default_width, desc->default_height);
    01100
    01101       case WDP_CENTER: // Centre the window horizontally
    01102         pt.x = (_screen.width - desc->default_width) / 2;
    01103         break;
    01104
    01105       default:
    01106         pt.x = desc->left;
    01107         if (pt.x < 0) pt.x += _screen.width; // negative is from right of the screen
    01108     }
    01109
    01110     switch (desc->top) {
    01111       case WDP_CENTER: // Centre the window vertically
    01112         pt.y = (_screen.height - desc->default_height) / 2;
    01113         break;
    01114
    01115       /* WDP_AUTO sets the position at once and is controlled by desc->left.
    01116        * Both left and top must be set to WDP_AUTO */
    01117       case WDP_AUTO:
    01118         NOT_REACHED();
    01119         assert(desc->left == WDP_AUTO && desc->top != WDP_AUTO);
    01120         /* fallthrough */
    01121
    01122       default:
    01123         pt.y = desc->top;
    01124         if (pt.y < 0) pt.y += _screen.height; // negative is from bottom of the screen
    01125         break;
    01126     }
    01127   }
    01128
    01129   return pt;
    01130 }
    01131
    01140 Window::Window(const WindowDesc *desc, WindowNumber window_number)
    01141 {
    01142   Point pt = LocalGetWindowPlacement(desc, window_number);
    01143   this->Initialize(pt.x, pt.y, desc->minimum_width, desc->minimum_height, desc->cls, desc->widgets, window_number);
    01144   this->desc_flags = desc->flags;
    01145 }
    01146
    01152 Window *FindWindowFromPt(int x, int y)
    01153 {
    01154   Window *w;
    01155   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    01156     if (IsInsideBS(x, w->left, w->width) && IsInsideBS(y, w->top, w->height)) {
    01157       return w;
    01158     }
    01159   }
    01160
    01161   return NULL;
    01162 }
    01163
    01167 void InitWindowSystem()
    01168 {
    01169   IConsoleClose();
    01170
    01171   _z_back_window = NULL;
    01172   _z_front_window = NULL;
    01173   _focused_window = NULL;
    01174   _mouseover_last_w = NULL;
    01175   _scrolling_viewport = 0;
    01176 }
    01177
    01181 void UnInitWindowSystem()
    01182 {
    01183   Window *w;
    01184   FOR_ALL_WINDOWS_FROM_FRONT(w) delete w;
    01185
    01186   for (w = _z_front_window; w != NULL; /* nothing */) {
    01187     Window *to_del = w;
    01188     w = w->z_back;
    01189     free(to_del);
    01190   }
    01191
    01192   _z_front_window = NULL;
    01193   _z_back_window = NULL;
    01194 }
    01195
    01199 void ResetWindowSystem()
    01200 {
    01201   UnInitWindowSystem();
    01202   InitWindowSystem();
    01203   _thd.pos.x = 0;
    01204   _thd.pos.y = 0;
    01205   _thd.new_pos.x = 0;
    01206   _thd.new_pos.y = 0;
    01207 }
    01208
    01209 static void DecreaseWindowCounters()
    01210 {
    01211   Window *w;
    01212   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    01213     /* Unclick scrollbar buttons if they are pressed. */
    01214     if (w->flags4 & (WF_SCROLL_DOWN | WF_SCROLL_UP)) {
    01215       w->flags4 &= ~(WF_SCROLL_DOWN | WF_SCROLL_UP);
    01216       w->SetDirty();
    01217     }
    01218     w->OnMouseLoop();
    01219   }
    01220
    01221   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    01222     if (w->flags4 & WF_TIMEOUT_MASK && !(--w->flags4 & WF_TIMEOUT_MASK)) {
    01223       w->OnTimeout();
    01224       if (w->desc_flags & WDF_UNCLICK_BUTTONS) w->RaiseButtons();
    01225     }
    01226   }
    01227 }
    01228
    01229 Window *GetCallbackWnd()
    01230 {
    01231   return FindWindowById(_thd.window_class, _thd.window_number);
    01232 }
    01233
    01234 static void HandlePlacePresize()
    01235 {
    01236   if (_special_mouse_mode != WSM_PRESIZE) return;
    01237
    01238   Window *w = GetCallbackWnd();
    01239   if (w == NULL) return;
    01240
    01241   Point pt = GetTileBelowCursor();
    01242   if (pt.x == -1) {
    01243     _thd.selend.x = -1;
    01244     return;
    01245   }
    01246
    01247   w->OnPlacePresize(pt, TileVirtXY(pt.x, pt.y));
    01248 }
    01249
    01250 static bool HandleDragDrop()
    01251 {
    01252   if (_special_mouse_mode != WSM_DRAGDROP) return true;
    01253   if (_left_button_down) return false;
    01254
    01255   Window *w = GetCallbackWnd();
    01256
    01257   if (w != NULL) {
    01258     /* send an event in client coordinates. */
    01259     Point pt;
    01260     pt.x = _cursor.pos.x - w->left;
    01261     pt.y = _cursor.pos.y - w->top;
    01262     w->OnDragDrop(pt, GetWidgetFromPos(w, pt.x, pt.y));
    01263   }
    01264
    01265   ResetObjectToPlace();
    01266
    01267   return false;
    01268 }
    01269
    01270 static bool HandleMouseOver()
    01271 {
    01272   Window *w = FindWindowFromPt(_cursor.pos.x, _cursor.pos.y);
    01273
    01274   /* We changed window, put a MOUSEOVER event to the last window */
    01275   if (_mouseover_last_w != NULL && _mouseover_last_w != w) {
    01276     /* Reset mouse-over coordinates of previous window */
    01277     Point pt = { -1, -1 };
    01278     _mouseover_last_w->OnMouseOver(pt, 0);
    01279   }
    01280
    01281   /* _mouseover_last_w will get reset when the window is deleted, see DeleteWindow() */
    01282   _mouseover_last_w = w;
    01283
    01284   if (w != NULL) {
    01285     /* send an event in client coordinates. */
    01286     Point pt = { _cursor.pos.x - w->left, _cursor.pos.y - w->top };
    01287     int widget = 0;
    01288     if (w->widget != NULL) {
    01289       widget = GetWidgetFromPos(w, pt.x, pt.y);
    01290     }
    01291     w->OnMouseOver(pt, widget);
    01292   }
    01293
    01294   /* Mouseover never stops execution */
    01295   return true;
    01296 }
    01297
    01307 void ResizeWindow(Window *w, int x, int y)
    01308 {
    01309   bool resize_height = false;
    01310   bool resize_width = false;
    01311
    01312   if (x == 0 && y == 0) return;
    01313
    01314   w->SetDirty();
    01315   for (Widget *wi = w->widget; wi->type != WWT_LAST; wi++) {
    01316     /* Isolate the resizing flags */
    01317     byte rsizeflag = GB(wi->display_flags, 0, 4);
    01318
    01319     if (rsizeflag == RESIZE_NONE) continue;
    01320
    01321     /* Resize the widget based on its resize-flag */
    01322     if (rsizeflag & RESIZE_LEFT) {
    01323       wi->left += x;
    01324       resize_width = true;
    01325     }
    01326
    01327     if (rsizeflag & RESIZE_RIGHT) {
    01328       wi->right += x;
    01329       resize_width = true;
    01330     }
    01331
    01332     if (rsizeflag & RESIZE_TOP) {
    01333       wi->top += y;
    01334       resize_height = true;
    01335     }
    01336
    01337     if (rsizeflag & RESIZE_BOTTOM) {
    01338       wi->bottom += y;
    01339       resize_height = true;
    01340     }
    01341   }
    01342
    01343   /* We resized at least 1 widget, so let's resize the window totally */
    01344   if (resize_width)  w->width  += x;
    01345   if (resize_height) w->height += y;
    01346
    01347   w->SetDirty();
    01348 }
    01349
    01350 static bool _dragging_window;
    01351
    01352 static bool HandleWindowDragging()
    01353 {
    01354   /* Get out immediately if no window is being dragged at all. */
    01355   if (!_dragging_window) return true;
    01356
    01357   /* Otherwise find the window... */
    01358   Window *w;
    01359   FOR_ALL_WINDOWS_FROM_BACK(w) {
    01360     if (w->flags4 & WF_DRAGGING) {
    01361       const Widget *t = &w->widget[1]; // the title bar ... ugh
    01362
    01363       /* Stop the dragging if the left mouse button was released */
    01364       if (!_left_button_down) {
    01365         w->flags4 &= ~WF_DRAGGING;
    01366         break;
    01367       }
    01368
    01369       w->SetDirty();
    01370
    01371       int x = _cursor.pos.x + _drag_delta.x;
    01372       int y = _cursor.pos.y + _drag_delta.y;
    01373       int nx = x;
    01374       int ny = y;
    01375
    01376       if (_settings_client.gui.window_snap_radius != 0) {
    01377         const Window *v;
    01378
    01379         int hsnap = _settings_client.gui.window_snap_radius;
    01380         int vsnap = _settings_client.gui.window_snap_radius;
    01381         int delta;
    01382
    01383         FOR_ALL_WINDOWS_FROM_BACK(v) {
    01384           if (v == w) continue; // Don't snap at yourself
    01385
    01386           if (y + w->height > v->top && y < v->top + v->height) {
    01387             /* Your left border <-> other right border */
    01388             delta = abs(v->left + v->width - x);
    01389             if (delta <= hsnap) {
    01390               nx = v->left + v->width;
    01391               hsnap = delta;
    01392             }
    01393
    01394             /* Your right border <-> other left border */
    01395             delta = abs(v->left - x - w->width);
    01396             if (delta <= hsnap) {
    01397               nx = v->left - w->width;
    01398               hsnap = delta;
    01399             }
    01400           }
    01401
    01402           if (w->top + w->height >= v->top && w->top <= v->top + v->height) {
    01403             /* Your left border <-> other left border */
    01404             delta = abs(v->left - x);
    01405             if (delta <= hsnap) {
    01406               nx = v->left;
    01407               hsnap = delta;
    01408             }
    01409
    01410             /* Your right border <-> other right border */
    01411             delta = abs(v->left + v->width - x - w->width);
    01412             if (delta <= hsnap) {
    01413               nx = v->left + v->width - w->width;
    01414               hsnap = delta;
    01415             }
    01416           }
    01417
    01418           if (x + w->width > v->left && x < v->left + v->width) {
    01419             /* Your top border <-> other bottom border */
    01420             delta = abs(v->top + v->height - y);
    01421             if (delta <= vsnap) {
    01422               ny = v->top + v->height;
    01423               vsnap = delta;
    01424             }
    01425
    01426             /* Your bottom border <-> other top border */
    01427             delta = abs(v->top - y - w->height);
    01428             if (delta <= vsnap) {
    01429               ny = v->top - w->height;
    01430               vsnap = delta;
    01431             }
    01432           }
    01433
    01434           if (w->left + w->width >= v->left && w->left <= v->left + v->width) {
    01435             /* Your top border <-> other top border */
    01436             delta = abs(v->top - y);
    01437             if (delta <= vsnap) {
    01438               ny = v->top;
    01439               vsnap = delta;
    01440             }
    01441
    01442             /* Your bottom border <-> other bottom border */
    01443             delta = abs(v->top + v->height - y - w->height);
    01444             if (delta <= vsnap) {
    01445               ny = v->top + v->height - w->height;
    01446               vsnap = delta;
    01447             }
    01448           }
    01449         }
    01450       }
    01451
    01452       /* Make sure the window doesn't leave the screen
    01453        * 13 is the height of the title bar */
    01454       nx = Clamp(nx, 13 - t->right, _screen.width - 13 - t->left);
    01455       ny = Clamp(ny, 0, _screen.height - 13);
    01456
    01457       /* Make sure the title bar isn't hidden by behind the main tool bar */
    01458       Window *v = FindWindowById(WC_MAIN_TOOLBAR, 0);
    01459       if (v != NULL) {
    01460         int v_bottom = v->top + v->height;
    01461         int v_right = v->left + v->width;
    01462         if (ny + t->top >= v->top && ny + t->top < v_bottom) {
    01463           if ((v->left < 13 && nx + t->left < v->left) ||
    01464               (v_right > _screen.width - 13 && nx + t->right > v_right)) {
    01465             ny = v_bottom;
    01466           } else {
    01467             if (nx + t->left > v->left - 13 &&
    01468                 nx + t->right < v_right + 13) {
    01469               if (w->top >= v_bottom) {
    01470                 ny = v_bottom;
    01471               } else if (w->left < nx) {
    01472                 nx = v->left - 13 - t->left;
    01473               } else {
    01474                 nx = v_right + 13 - t->right;
    01475               }
    01476             }
    01477           }
    01478         }
    01479       }
    01480
    01481       if (w->viewport != NULL) {
    01482         w->viewport->left += nx - w->left;
    01483         w->viewport->top  += ny - w->top;
    01484       }
    01485       w->left = nx;
    01486       w->top  = ny;
    01487
    01488       w->SetDirty();
    01489       return false;
    01490     } else if (w->flags4 & WF_SIZING) {
    01491       int x, y;
    01492
    01493       /* Stop the sizing if the left mouse button was released */
    01494       if (!_left_button_down) {
    01495         w->flags4 &= ~WF_SIZING;
    01496         w->SetDirty();
    01497         break;
    01498       }
    01499
    01500       x = _cursor.pos.x - _drag_delta.x;
    01501       y = _cursor.pos.y - _drag_delta.y;
    01502
    01503       /* X and Y has to go by step.. calculate it.
    01504        * The cast to int is necessary else x/y are implicitly casted to
    01505        * unsigned int, which won't work. */
    01506       if (w->resize.step_width > 1) x -= x % (int)w->resize.step_width;
    01507
    01508       if (w->resize.step_height > 1) y -= y % (int)w->resize.step_height;
    01509
    01510       /* Check if we don't go below the minimum set size */
    01511       if ((int)w->width + x < (int)w->resize.width)
    01512         x = w->resize.width - w->width;
    01513       if ((int)w->height + y < (int)w->resize.height)
    01514         y = w->resize.height - w->height;
    01515
    01516       /* Window already on size */
    01517       if (x == 0 && y == 0) return false;
    01518
    01519       /* Now find the new cursor pos.. this is NOT _cursor, because
    01520           we move in steps. */
    01521       _drag_delta.x += x;
    01522       _drag_delta.y += y;
    01523
    01524       /* ResizeWindow sets both pre- and after-size to dirty for redrawal */
    01525       ResizeWindow(w, x, y);
    01526
    01527       Point size;
    01528       Point diff;
    01529       size.x = x + w->width;
    01530       size.y = y + w->height;
    01531       diff.x = x;
    01532       diff.y = y;
    01533       w->OnResize(size, diff);
    01534       return false;
    01535     }
    01536   }
    01537
    01538   _dragging_window = false;
    01539   return false;
    01540 }
    01541
    01546 static void StartWindowDrag(Window *w)
    01547 {
    01548   w->flags4 |= WF_DRAGGING;
    01549   _dragging_window = true;
    01550
    01551   _drag_delta.x = w->left - _cursor.pos.x;
    01552   _drag_delta.y = w->top  - _cursor.pos.y;
    01553
    01554   BringWindowToFront(w);
    01555   DeleteWindowById(WC_DROPDOWN_MENU, 0);
    01556 }
    01557
    01562 static void StartWindowSizing(Window *w)
    01563 {
    01564   w->flags4 |= WF_SIZING;
    01565   _dragging_window = true;
    01566
    01567   _drag_delta.x = _cursor.pos.x;
    01568   _drag_delta.y = _cursor.pos.y;
    01569
    01570   BringWindowToFront(w);
    01571   DeleteWindowById(WC_DROPDOWN_MENU, 0);
    01572 }
    01573
    01574
    01575 static bool HandleScrollbarScrolling()
    01576 {
    01577   Window *w;
    01578
    01579   /* Get out quickly if no item is being scrolled */
    01580   if (!_scrolling_scrollbar) return true;
    01581
    01582   /* Find the scrolling window */
    01583   FOR_ALL_WINDOWS_FROM_BACK(w) {
    01584     if (w->flags4 & WF_SCROLL_MIDDLE) {
    01585       /* Abort if no button is clicked any more. */
    01586       if (!_left_button_down) {
    01587         w->flags4 &= ~WF_SCROLL_MIDDLE;
    01588         w->SetDirty();
    01589         break;
    01590       }
    01591
    01592       int i;
    01593       Scrollbar *sb;
    01594
    01595       if (w->flags4 & WF_HSCROLL) {
    01596         sb = &w->hscroll;
    01597         i = _cursor.pos.x - _cursorpos_drag_start.x;
    01598       } else if (w->flags4 & WF_SCROLL2){
    01599         sb = &w->vscroll2;
    01600         i = _cursor.pos.y - _cursorpos_drag_start.y;
    01601       } else {
    01602         sb = &w->vscroll;
    01603         i = _cursor.pos.y - _cursorpos_drag_start.y;
    01604       }
    01605
    01606       /* Find the item we want to move to and make sure it's inside bounds. */
    01607       int pos = min(max(0, i + _scrollbar_start_pos) * sb->count / _scrollbar_size, max(0, sb->count - sb->cap));
    01608       if (pos != sb->pos) {
    01609         sb->pos = pos;
    01610         w->SetDirty();
    01611       }
    01612       return false;
    01613     }
    01614   }
    01615
    01616   _scrolling_scrollbar = false;
    01617   return false;
    01618 }
    01619
    01620 static bool HandleViewportScroll()
    01621 {
    01622   bool scrollwheel_scrolling = _settings_client.gui.scrollwheel_scrolling == 1 && (_cursor.v_wheel != 0 || _cursor.h_wheel != 0);
    01623
    01624   if (!_scrolling_viewport) return true;
    01625
    01626   Window *w = FindWindowFromPt(_cursor.pos.x, _cursor.pos.y);
    01627
    01628   if (!(_right_button_down || scrollwheel_scrolling || (_settings_client.gui.left_mouse_btn_scrolling && _left_button_down)) || w == NULL) {
    01629     _cursor.fix_at = false;
    01630     _scrolling_viewport = false;
    01631     return true;
    01632   }
    01633
    01634   if (w == FindWindowById(WC_MAIN_WINDOW, 0) && w->viewport->follow_vehicle != INVALID_VEHICLE) {
    01635     /* If the main window is following a vehicle, then first let go of it! */
    01636     const Vehicle *veh = GetVehicle(w->viewport->follow_vehicle);
    01637     ScrollMainWindowTo(veh->x_pos, veh->y_pos, true); /* This also resets follow_vehicle */
    01638     return true;
    01639   }
    01640
    01641   Point delta;
    01642   if (_settings_client.gui.reverse_scroll || (_settings_client.gui.left_mouse_btn_scrolling && _left_button_down)) {
    01643     delta.x = -_cursor.delta.x;
    01644     delta.y = -_cursor.delta.y;
    01645   } else {
    01646     delta.x = _cursor.delta.x;
    01647     delta.y = _cursor.delta.y;
    01648   }
    01649
    01650   if (scrollwheel_scrolling) {
    01651     /* We are using scrollwheels for scrolling */
    01652     delta.x = _cursor.h_wheel;
    01653     delta.y = _cursor.v_wheel;
    01654     _cursor.v_wheel = 0;
    01655     _cursor.h_wheel = 0;
    01656   }
    01657
    01658   /* Create a scroll-event and send it to the window */
    01659   w->OnScroll(delta);
    01660
    01661   _cursor.delta.x = 0;
    01662   _cursor.delta.y = 0;
    01663   return false;
    01664 }
    01665
    01674 static bool MaybeBringWindowToFront(Window *w)
    01675 {
    01676   bool bring_to_front = false;
    01677
    01678   if (w->window_class == WC_MAIN_WINDOW ||
    01679       IsVitalWindow(w) ||
    01680       w->window_class == WC_TOOLTIPS ||
    01681       w->window_class == WC_DROPDOWN_MENU) {
    01682     return true;
    01683   }
    01684
    01685   Window *u;
    01686   FOR_ALL_WINDOWS_FROM_BACK_FROM(u, w->z_front) {
    01687     /* A modal child will prevent the activation of the parent window */
    01688     if (u->parent == w && (u->desc_flags & WDF_MODAL)) {
    01689       u->flags4 |= WF_WHITE_BORDER_MASK;
    01690       u->SetDirty();
    01691       return false;
    01692     }
    01693
    01694     if (u->window_class == WC_MAIN_WINDOW ||
    01695         IsVitalWindow(u) ||
    01696         u->window_class == WC_TOOLTIPS ||
    01697         u->window_class == WC_DROPDOWN_MENU) {
    01698       continue;
    01699     }
    01700
    01701     /* Window sizes don't interfere, leave z-order alone */
    01702     if (w->left + w->width <= u->left ||
    01703         u->left + u->width <= w->left ||
    01704         w->top  + w->height <= u->top ||
    01705         u->top + u->height <= w->top) {
    01706       continue;
    01707     }
    01708
    01709     bring_to_front = true;
    01710   }
    01711
    01712   if (bring_to_front) BringWindowToFront(w);
    01713   return true;
    01714 }
    01715
    01719 void HandleKeypress(uint32 raw_key)
    01720 {
    01721   /*
    01722   * During the generation of the world, there might be
    01723   * another thread that is currently building for example
    01724   * a road. To not interfere with those tasks, we should
    01725   * NOT change the _current_company here.
    01726   *
    01727   * This is not necessary either, as the only events that
    01728   * can be handled are the 'close application' events
    01729   */
    01730   if (!IsGeneratingWorld()) _current_company = _local_company;
    01731
    01732   /* Setup event */
    01733   uint16 key     = GB(raw_key,  0, 16);
    01734   uint16 keycode = GB(raw_key, 16, 16);
    01735
    01736   /*
    01737    * The Unicode standard defines an area called the private use area. Code points in this
    01738    * area are reserved for private use and thus not portable between systems. For instance,
    01739    * Apple defines code points for the arrow keys in this area, but these are only printable
    01740    * on a system running OS X. We don't want these keys to show up in text fields and such,
    01741    * and thus we have to clear the unicode character when we encounter such a key.
    01742    */
    01743   if (key >= 0xE000 && key <= 0xF8FF) key = 0;
    01744
    01745   /*
    01746    * If both key and keycode is zero, we don't bother to process the event.
    01747    */
    01748   if (key == 0 && keycode == 0) return;
    01749
    01750   /* Check if the focused window has a focused editbox */
    01751   if (EditBoxInGlobalFocus()) {
    01752     /* All input will in this case go to the focused window */
    01753     _focused_window->OnKeyPress(key, keycode);
    01754     return;
    01755   }
    01756
    01757   /* Call the event, start with the uppermost window. */
    01758   Window *w;
    01759   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    01760     if (w->OnKeyPress(key, keycode) == Window::ES_HANDLED) return;
    01761   }
    01762
    01763   w = FindWindowById(WC_MAIN_TOOLBAR, 0);
    01764   /* When there is no toolbar w is null, check for that */
    01765   if (w != NULL) w->OnKeyPress(key, keycode);
    01766 }
    01767
    01771 void HandleCtrlChanged()
    01772 {
    01773   /* Call the event, start with the uppermost window. */
    01774   Window *w;
    01775   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    01776     if (w->OnCTRLStateChange() == Window::ES_HANDLED) return;
    01777   }
    01778 }
    01779
    01786 static int _input_events_this_tick = 0;
    01787
    01792 static void HandleAutoscroll()
    01793 {
    01794   if (_settings_client.gui.autoscroll && _game_mode != GM_MENU && !IsGeneratingWorld()) {
    01795     int x = _cursor.pos.x;
    01796     int y = _cursor.pos.y;
    01797     Window *w = FindWindowFromPt(x, y);
    01798     if (w == NULL || w->flags4 & WF_DISABLE_VP_SCROLL) return;
    01799     ViewPort *vp = IsPtInWindowViewport(w, x, y);
    01800     if (vp != NULL) {
    01801       x -= vp->left;
    01802       y -= vp->top;
    01803
    01804       /* here allows scrolling in both x and y axis */
    01805 #define scrollspeed 3
    01806       if (x - 15 < 0) {
    01807         w->viewport->dest_scrollpos_x += ScaleByZoom((x - 15) * scrollspeed, vp->zoom);
    01808       } else if (15 - (vp->width - x) > 0) {
    01809         w->viewport->dest_scrollpos_x += ScaleByZoom((15 - (vp->width - x)) * scrollspeed, vp->zoom);
    01810       }
    01811       if (y - 15 < 0) {
    01812         w->viewport->dest_scrollpos_y += ScaleByZoom((y - 15) * scrollspeed, vp->zoom);
    01813       } else if (15 - (vp->height - y) > 0) {
    01814         w->viewport->dest_scrollpos_y += ScaleByZoom((15 - (vp->height - y)) * scrollspeed, vp->zoom);
    01815       }
    01816 #undef scrollspeed
    01817     }
    01818   }
    01819 }
    01820
    01821 enum MouseClick {
    01822   MC_NONE = 0,
    01823   MC_LEFT,
    01824   MC_RIGHT,
    01825   MC_DOUBLE_LEFT,
    01826
    01827   MAX_OFFSET_DOUBLE_CLICK = 5,
    01828   TIME_BETWEEN_DOUBLE_CLICK = 500,
    01829 };
    01830
    01831 extern bool VpHandlePlaceSizingDrag();
    01832
    01833 static void ScrollMainViewport(int x, int y)
    01834 {
    01835   if (_game_mode != GM_MENU) {
    01836     Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    01837     assert(w);
    01838
    01839     w->viewport->dest_scrollpos_x += ScaleByZoom(x, w->viewport->zoom);
    01840     w->viewport->dest_scrollpos_y += ScaleByZoom(y, w->viewport->zoom);
    01841   }
    01842 }
    01843
    01853 static const int8 scrollamt[16][2] = {
    01854   { 0,  0},
    01855   {-2,  0},
    01856   { 0, -2},
    01857   {-2, -1},
    01858   { 2,  0},
    01859   { 0,  0},
    01860   { 2, -1},
    01861   { 0, -2},
    01862   { 0  ,2},
    01863   {-2  ,1},
    01864   { 0,  0},
    01865   {-2,  0},
    01866   { 2,  1},
    01867   { 0,  2},
    01868   { 2,  0},
    01869   { 0,  0},
    01870 };
    01871
    01872 static void HandleKeyScrolling()
    01873 {
    01874   /*
    01875    * Check that any of the dirkeys is pressed and that the focused window
    01876    * dont has an edit-box as focused widget.
    01877    */
    01878   if (_dirkeys && !EditBoxInGlobalFocus()) {
    01879     int factor = _shift_pressed ? 50 : 10;
    01880     ScrollMainViewport(scrollamt[_dirkeys][0] * factor, scrollamt[_dirkeys][1] * factor);
    01881   }
    01882 }
    01883
    01884 void MouseLoop(MouseClick click, int mousewheel)
    01885 {
    01886   DecreaseWindowCounters();
    01887   HandlePlacePresize();
    01888   UpdateTileSelection();
    01889
    01890   if (!VpHandlePlaceSizingDrag())  return;
    01891   if (!HandleDragDrop())           return;
    01892   if (!HandleWindowDragging())     return;
    01893   if (!HandleScrollbarScrolling()) return;
    01894   if (!HandleViewportScroll())     return;
    01895   if (!HandleMouseOver())          return;
    01896
    01897   bool scrollwheel_scrolling = _settings_client.gui.scrollwheel_scrolling == 1 && (_cursor.v_wheel != 0 || _cursor.h_wheel != 0);
    01898   if (click == MC_NONE && mousewheel == 0 && !scrollwheel_scrolling) return;
    01899
    01900   int x = _cursor.pos.x;
    01901   int y = _cursor.pos.y;
    01902   Window *w = FindWindowFromPt(x, y);
    01903   if (w == NULL) return;
    01904
    01905   if (!MaybeBringWindowToFront(w)) return;
    01906   ViewPort *vp = IsPtInWindowViewport(w, x, y);
    01907
    01908   /* Don't allow any action in a viewport if either in menu of in generating world */
    01909   if (vp != NULL && (_game_mode == GM_MENU || IsGeneratingWorld())) return;
    01910
    01911   if (mousewheel != 0) {
    01912     if (_settings_client.gui.scrollwheel_scrolling == 0) {
    01913       /* Send mousewheel event to window */
    01914       w->OnMouseWheel(mousewheel);
    01915     }
    01916
    01917     /* Dispatch a MouseWheelEvent for widgets if it is not a viewport */
    01918     if (vp == NULL) DispatchMouseWheelEvent(w, GetWidgetFromPos(w, x - w->left, y - w->top), mousewheel);
    01919   }
    01920
    01921   if (vp != NULL) {
    01922     if (scrollwheel_scrolling) click = MC_RIGHT; // we are using the scrollwheel in a viewport, so we emulate right mouse button
    01923     switch (click) {
    01924       case MC_DOUBLE_LEFT:
    01925       case MC_LEFT:
    01926         DEBUG(misc, 2, "Cursor: 0x%X (%d)", _cursor.sprite, _cursor.sprite);
    01927         if (_thd.place_mode != VHM_NONE &&
    01928             /* query button and place sign button work in pause mode */
    01929             _cursor.sprite != SPR_CURSOR_QUERY &&
    01930             _cursor.sprite != SPR_CURSOR_SIGN &&
    01931             _pause_game != 0 &&
    01932             !_cheats.build_in_pause.value) {
    01933           return;
    01934         }
    01935
    01936         if (_thd.place_mode == VHM_NONE) {
    01937           if (!HandleViewportClicked(vp, x, y) &&
    01938               !(w->flags4 & WF_DISABLE_VP_SCROLL) &&
    01939               _settings_client.gui.left_mouse_btn_scrolling) {
    01940             _scrolling_viewport = true;
    01941             _cursor.fix_at = false;
    01942           }
    01943         } else {
    01944           PlaceObject();
    01945         }
    01946         break;
    01947
    01948       case MC_RIGHT:
    01949         if (!(w->flags4 & WF_DISABLE_VP_SCROLL)) {
    01950           _scrolling_viewport = true;
    01951           _cursor.fix_at = true;
    01952         }
    01953         break;
    01954
    01955       default:
    01956         break;
    01957     }
    01958   } else {
    01959     switch (click) {
    01960       case MC_DOUBLE_LEFT:
    01961         DispatchLeftClickEvent(w, x - w->left, y - w->top, true);
    01962         if (_mouseover_last_w == NULL) break; // The window got removed.
    01963         /* fallthough, and also give a single-click for backwards compatibility */
    01964       case MC_LEFT:
    01965         DispatchLeftClickEvent(w, x - w->left, y - w->top, false);
    01966         break;
    01967
    01968       default:
    01969         if (!scrollwheel_scrolling || w == NULL || w->window_class != WC_SMALLMAP) break;
    01970         /* We try to use the scrollwheel to scroll since we didn't touch any of the buttons.
    01971         * Simulate a right button click so we can get started. */
    01972         /* fallthough */
    01973       case MC_RIGHT: DispatchRightClickEvent(w, x - w->left, y - w->top); break;
    01974     }
    01975   }
    01976 }
    01977
    01981 void HandleMouseEvents()
    01982 {
    01983   static int double_click_time = 0;
    01984   static int double_click_x = 0;
    01985   static int double_click_y = 0;
    01986
    01987   /*
    01988    * During the generation of the world, there might be
    01989    * another thread that is currently building for example
    01990    * a road. To not interfere with those tasks, we should
    01991    * NOT change the _current_company here.
    01992    *
    01993    * This is not necessary either, as the only events that
    01994    * can be handled are the 'close application' events
    01995    */
    01996   if (!IsGeneratingWorld()) _current_company = _local_company;
    01997
    01998   /* Mouse event? */
    01999   MouseClick click = MC_NONE;
    02000   if (_left_button_down && !_left_button_clicked) {
    02001     click = MC_LEFT;
    02002     if (double_click_time != 0 && _realtime_tick - double_click_time   < TIME_BETWEEN_DOUBLE_CLICK &&
    02003         double_click_x != 0    && abs(_cursor.pos.x - double_click_x) < MAX_OFFSET_DOUBLE_CLICK  &&
    02004         double_click_y != 0    && abs(_cursor.pos.y - double_click_y) < MAX_OFFSET_DOUBLE_CLICK) {
    02005       click = MC_DOUBLE_LEFT;
    02006     }
    02007     double_click_time = _realtime_tick;
    02008     double_click_x = _cursor.pos.x;
    02009     double_click_y = _cursor.pos.y;
    02010     _left_button_clicked = true;
    02011     _input_events_this_tick++;
    02012   } else if (_right_button_clicked) {
    02013     _right_button_clicked = false;
    02014     click = MC_RIGHT;
    02015     _input_events_this_tick++;
    02016   }
    02017
    02018   int mousewheel = 0;
    02019   if (_cursor.wheel) {
    02020     mousewheel = _cursor.wheel;
    02021     _cursor.wheel = 0;
    02022     _input_events_this_tick++;
    02023   }
    02024
    02025   MouseLoop(click, mousewheel);
    02026 }
    02027
    02031 static void CheckSoftLimit()
    02032 {
    02033   if (_settings_client.gui.window_soft_limit == 0) return;
    02034
    02035   for (;;) {
    02036     uint deletable_count = 0;
    02037     Window *w, *last_deletable = NULL;
    02038     FOR_ALL_WINDOWS_FROM_FRONT(w) {
    02039       if (w->window_class == WC_MAIN_WINDOW || IsVitalWindow(w) || (w->flags4 & WF_STICKY)) continue;
    02040
    02041       last_deletable = w;
    02042       deletable_count++;
    02043     }
    02044
    02045     /* We've ot reached the soft limit yet */
    02046     if (deletable_count <= _settings_client.gui.window_soft_limit) break;
    02047
    02048     assert(last_deletable != NULL);
    02049     delete last_deletable;
    02050   }
    02051 }
    02052
    02056 void InputLoop()
    02057 {
    02058   CheckSoftLimit();
    02059   HandleKeyScrolling();
    02060
    02061   /* Do the actual free of the deleted windows. */
    02062   for (Window *v = _z_front_window; v != NULL; /* nothing */) {
    02063     Window *w = v;
    02064     v = v->z_back;
    02065
    02066     if (w->window_class != WC_INVALID) continue;
    02067
    02068     /* Find the window in the z-array, and effectively remove it
    02069      * by moving all windows after it one to the left. This must be
    02070      * done before removing the child so we cannot cause recursion
    02071      * between the deletion of the parent and the child. */
    02072     if (w->z_front == NULL) {
    02073       _z_front_window = w->z_back;
    02074     } else {
    02075       w->z_front->z_back = w->z_back;
    02076     }
    02077     if (w->z_back == NULL) {
    02078       _z_back_window  = w->z_front;
    02079     } else {
    02080       w->z_back->z_front = w->z_front;
    02081     }
    02082     free(w);
    02083   }
    02084
    02085   if (_input_events_this_tick != 0) {
    02086     /* The input loop is called only once per GameLoop() - so we can clear the counter here */
    02087     _input_events_this_tick = 0;
    02088     /* there were some inputs this tick, don't scroll ??? */
    02089     return;
    02090   }
    02091
    02092   /* HandleMouseEvents was already called for this tick */
    02093   HandleMouseEvents();
    02094   HandleAutoscroll();
    02095 }
    02096
    02100 void UpdateWindows()
    02101 {
    02102   Window *w;
    02103   static int we4_timer = 0;
    02104   int t = we4_timer + 1;
    02105
    02106   if (t >= 100) {
    02107     FOR_ALL_WINDOWS_FROM_FRONT(w) {
    02108       w->OnHundredthTick();
    02109     }
    02110     t = 0;
    02111   }
    02112   we4_timer = t;
    02113
    02114   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    02115     if (w->flags4 & WF_WHITE_BORDER_MASK) {
    02116       w->flags4 -= WF_WHITE_BORDER_ONE;
    02117
    02118       if (!(w->flags4 & WF_WHITE_BORDER_MASK)) w->SetDirty();
    02119     }
    02120   }
    02121
    02122   DrawDirtyBlocks();
    02123
    02124   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02125     if (w->viewport != NULL) UpdateViewportPosition(w);
    02126   }
    02127   NetworkDrawChatMessage();
    02128   /* Redraw mouse cursor in case it was hidden */
    02129   DrawMouseCursor();
    02130 }
    02131
    02137 void InvalidateWindow(WindowClass cls, WindowNumber number)
    02138 {
    02139   const Window *w;
    02140   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02141     if (w->window_class == cls && w->window_number == number) w->SetDirty();
    02142   }
    02143 }
    02144
    02151 void InvalidateWindowWidget(WindowClass cls, WindowNumber number, byte widget_index)
    02152 {
    02153   const Window *w;
    02154   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02155     if (w->window_class == cls && w->window_number == number) {
    02156       w->InvalidateWidget(widget_index);
    02157     }
    02158   }
    02159 }
    02160
    02165 void InvalidateWindowClasses(WindowClass cls)
    02166 {
    02167   Window *w;
    02168   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02169     if (w->window_class == cls) w->SetDirty();
    02170   }
    02171 }
    02172
    02177 void InvalidateThisWindowData(Window *w, int data)
    02178 {
    02179   w->OnInvalidateData(data);
    02180   w->SetDirty();
    02181 }
    02182
    02188 void InvalidateWindowData(WindowClass cls, WindowNumber number, int data)
    02189 {
    02190   Window *w;
    02191   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02192     if (w->window_class == cls && w->window_number == number) InvalidateThisWindowData(w, data);
    02193   }
    02194 }
    02195
    02200 void InvalidateWindowClassesData(WindowClass cls, int data)
    02201 {
    02202   Window *w;
    02203
    02204   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02205     if (w->window_class == cls) InvalidateThisWindowData(w, data);
    02206   }
    02207 }
    02208
    02212 void CallWindowTickEvent()
    02213 {
    02214   if (_scroller_click_timeout > 3) {
    02215     _scroller_click_timeout -= 3;
    02216   } else {
    02217     _scroller_click_timeout = 0;
    02218   }
    02219
    02220   Window *w;
    02221   FOR_ALL_WINDOWS_FROM_FRONT(w) {
    02222     w->OnTick();
    02223   }
    02224 }
    02225
    02232 void DeleteNonVitalWindows()
    02233 {
    02234   Window *w;
    02235
    02236 restart_search:
    02237   /* When we find the window to delete, we need to restart the search
    02238    * as deleting this window could cascade in deleting (many) others
    02239    * anywhere in the z-array */
    02240   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02241     if (w->window_class != WC_MAIN_WINDOW &&
    02242         w->window_class != WC_SELECT_GAME &&
    02243         w->window_class != WC_MAIN_TOOLBAR &&
    02244         w->window_class != WC_STATUS_BAR &&
    02245         w->window_class != WC_TOOLBAR_MENU &&
    02246         w->window_class != WC_TOOLTIPS &&
    02247         (w->flags4 & WF_STICKY) == 0) { // do not delete windows which are 'pinned'
    02248
    02249       delete w;
    02250       goto restart_search;
    02251     }
    02252   }
    02253 }
    02254
    02260 void DeleteAllNonVitalWindows()
    02261 {
    02262   Window *w;
    02263
    02264   /* Delete every window except for stickied ones, then sticky ones as well */
    02265   DeleteNonVitalWindows();
    02266
    02267 restart_search:
    02268   /* When we find the window to delete, we need to restart the search
    02269    * as deleting this window could cascade in deleting (many) others
    02270    * anywhere in the z-array */
    02271   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02272     if (w->flags4 & WF_STICKY) {
    02273       delete w;
    02274       goto restart_search;
    02275     }
    02276   }
    02277 }
    02278
    02283 void DeleteConstructionWindows()
    02284 {
    02285   Window *w;
    02286
    02287 restart_search:
    02288   /* When we find the window to delete, we need to restart the search
    02289    * as deleting this window could cascade in deleting (many) others
    02290    * anywhere in the z-array */
    02291   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02292     if (w->desc_flags & WDF_CONSTRUCTION) {
    02293       delete w;
    02294       goto restart_search;
    02295     }
    02296   }
    02297
    02298   FOR_ALL_WINDOWS_FROM_BACK(w) w->SetDirty();
    02299 }
    02300
    02302 void HideVitalWindows()
    02303 {
    02304   DeleteWindowById(WC_TOOLBAR_MENU, 0);
    02305   DeleteWindowById(WC_MAIN_TOOLBAR, 0);
    02306   DeleteWindowById(WC_STATUS_BAR, 0);
    02307 }
    02308
    02314 int PositionMainToolbar(Window *w)
    02315 {
    02316   DEBUG(misc, 5, "Repositioning Main Toolbar...");
    02317
    02318   if (w == NULL || w->window_class != WC_MAIN_TOOLBAR) {
    02319     w = FindWindowById(WC_MAIN_TOOLBAR, 0);
    02320   }
    02321
    02322   switch (_settings_client.gui.toolbar_pos) {
    02323     case 1:  w->left = (_screen.width - w->width) / 2; break;
    02324     case 2:  w->left = _screen.width - w->width; break;
    02325     default: w->left = 0;
    02326   }
    02327   SetDirtyBlocks(0, 0, _screen.width, w->height); // invalidate the whole top part
    02328   return w->left;
    02329 }
    02330
    02338 void SetVScrollCount(Window *w, int num)
    02339 {
    02340   w->vscroll.count = num;
    02341   num -= w->vscroll.cap;
    02342   if (num < 0) num = 0;
    02343   if (num < w->vscroll.pos) w->vscroll.pos = num;
    02344 }
    02345
    02353 void SetVScroll2Count(Window *w, int num)
    02354 {
    02355   w->vscroll2.count = num;
    02356   num -= w->vscroll2.cap;
    02357   if (num < 0) num = 0;
    02358   if (num < w->vscroll2.pos) w->vscroll2.pos = num;
    02359 }
    02360
    02368 void SetHScrollCount(Window *w, int num)
    02369 {
    02370   w->hscroll.count = num;
    02371   num -= w->hscroll.cap;
    02372   if (num < 0) num = 0;
    02373   if (num < w->hscroll.pos) w->hscroll.pos = num;
    02374 }
    02375
    02381 void RelocateAllWindows(int neww, int newh)
    02382 {
    02383   Window *w;
    02384
    02385   FOR_ALL_WINDOWS_FROM_BACK(w) {
    02386     int left, top;
    02387
    02388     if (w->window_class == WC_MAIN_WINDOW) {
    02389       ViewPort *vp = w->viewport;
    02390       vp->width = w->width = neww;
    02391       vp->height = w->height = newh;
    02392       vp->virtual_width = ScaleByZoom(neww, vp->zoom);
    02393       vp->virtual_height = ScaleByZoom(newh, vp->zoom);
    02394       continue; // don't modify top,left
    02395     }
    02396
    02397     /* XXX - this probably needs something more sane. For example specying
    02398      * in a 'backup'-desc that the window should always be centred. */
    02399     switch (w->window_class) {
    02400       case WC_MAIN_TOOLBAR:
    02401         if (neww - w->width != 0) {
    02402           ResizeWindow(w, min(neww, 640) - w->width, 0);
    02403
    02404           Point size;
    02405           Point delta;
    02406           size.x = w->width;
    02407           size.y = w->height;
    02408           delta.x = neww - w->width;
    02409           delta.y = 0;
    02410           w->OnResize(size, delta);
    02411         }
    02412
    02413         top = w->top;
    02414         left = PositionMainToolbar(w); // changes toolbar orientation
    02415         break;
    02416
    02417       case WC_SELECT_GAME:
    02418       case WC_GAME_OPTIONS:
    02419       case WC_NETWORK_WINDOW:
    02420         top = (newh - w->height) >> 1;
    02421         left = (neww - w->width) >> 1;
    02422         break;
    02423
    02424       case WC_NEWS_WINDOW:
    02425         top = newh - w->height;
    02426         left = (neww - w->width) >> 1;
    02427         break;
    02428
    02429       case WC_STATUS_BAR:
    02430         ResizeWindow(w, Clamp(neww, 320, 640) - w->width, 0);
    02431         top = newh - w->height;
    02432         left = (neww - w->width) >> 1;
    02433         break;
    02434
    02435       case WC_SEND_NETWORK_MSG:
    02436         ResizeWindow(w, Clamp(neww, 320, 640) - w->width, 0);
    02437         top = (newh - 26); // 26 = height of status bar + height of chat bar
    02438         left = (neww - w->width) >> 1;
    02439         break;
    02440
    02441       case WC_CONSOLE:
    02442         IConsoleResize(w);
    02443         continue;
    02444
    02445       default: {
    02446         left = w->left;
    02447         if (left + (w->width >> 1) >= neww) left = neww - w->width;
    02448         if (left < 0) left = 0;
    02449
    02450         top = w->top;
    02451         if (top + (w->height >> 1) >= newh) top = newh - w->height;
    02452
    02453         const Window *wt = FindWindowById(WC_MAIN_TOOLBAR, 0);
    02454         if (wt != NULL) {
    02455           if (top < wt->height && wt->left < (w->left + w->width) && (wt->left + wt->width) > w->left) top = wt->height;
    02456           if (top >= newh) top = newh - 1;
    02457         } else {
    02458           if (top < 0) top = 0;
    02459         }
    02460       } break;
    02461     }
    02462
    02463     if (w->viewport != NULL) {
    02464       w->viewport->left += left - w->left;
    02465       w->viewport->top += top - w->top;
    02466     }
    02467
    02468     w->left = left;
    02469     w->top = top;
    02470   }
    02471 }
    02472
    02477 PickerWindowBase::~PickerWindowBase()
    02478 {
    02479   this->window_class = WC_INVALID; // stop the ancestor from freeing the already (to be) child
    02480   ResetObjectToPlace();
    02481 }