window.cpp

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00001 /* $Id: window.cpp 15428 2009-02-09 02:57:15Z rubidium $ */
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 }

Generated on Mon Feb 16 23:12:13 2009 for openttd by  doxygen 1.5.6