viewport_gui.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "landscape.h"
00014 #include "window_gui.h"
00015 #include "viewport_func.h"
00016 #include "strings_func.h"
00017 #include "zoom_func.h"
00018 #include "window_func.h"
00019 
00020 #include "table/strings.h"
00021 #include "table/sprites.h"
00022 
00024 enum ExtraViewportWindowWidgets {
00025   EVW_CAPTION,
00026   EVW_VIEWPORT,
00027   EVW_ZOOMIN,
00028   EVW_ZOOMOUT,
00029   EVW_MAIN_TO_VIEW,
00030   EVW_VIEW_TO_MAIN,
00031 };
00032 
00033 /* Extra ViewPort Window Stuff */
00034 static const NWidgetPart _nested_extra_view_port_widgets[] = {
00035   NWidget(NWID_HORIZONTAL),
00036     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
00037     NWidget(WWT_CAPTION, COLOUR_GREY, EVW_CAPTION), SetDataTip(STR_EXTRA_VIEW_PORT_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00038     NWidget(WWT_SHADEBOX, COLOUR_GREY),
00039     NWidget(WWT_STICKYBOX, COLOUR_GREY),
00040   EndContainer(),
00041   NWidget(WWT_PANEL, COLOUR_GREY),
00042     NWidget(NWID_VIEWPORT, INVALID_COLOUR, EVW_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),
00043   EndContainer(),
00044   NWidget(NWID_HORIZONTAL),
00045     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMIN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),
00046     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMOUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),
00047     NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
00048       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),
00049                     SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),
00050       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),
00051                     SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),
00052     EndContainer(),
00053   EndContainer(),
00054   NWidget(NWID_HORIZONTAL),
00055     NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),
00056     NWidget(WWT_RESIZEBOX, COLOUR_GREY),
00057   EndContainer(),
00058 };
00059 
00060 class ExtraViewportWindow : public Window {
00061 public:
00062   ExtraViewportWindow(const WindowDesc *desc, int window_number, TileIndex tile) : Window()
00063   {
00064     this->InitNested(desc, window_number);
00065 
00066     NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(EVW_VIEWPORT);
00067     nvp->InitializeViewport(this, 0, ZOOM_LVL_NORMAL);
00068     this->DisableWidget(EVW_ZOOMIN);
00069 
00070     Point pt;
00071     if (tile == INVALID_TILE) {
00072       /* No tile? Use center of main viewport. */
00073       const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00074 
00075       /* center on same place as main window (zoom is maximum, no adjustment needed) */
00076       pt.x = w->viewport->scrollpos_x + w->viewport->virtual_width / 2;
00077       pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;
00078     } else {
00079       pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));
00080     }
00081 
00082     this->viewport->scrollpos_x = pt.x - this->viewport->virtual_width / 2;
00083     this->viewport->scrollpos_y = pt.y - this->viewport->virtual_height / 2;
00084     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
00085     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
00086   }
00087 
00088   virtual void SetStringParameters(int widget) const
00089   {
00090     switch (widget) {
00091       case EVW_CAPTION:
00092         /* set the number in the title bar */
00093         SetDParam(0, this->window_number + 1);
00094         break;
00095     }
00096   }
00097 
00098   virtual void OnClick(Point pt, int widget, int click_count)
00099   {
00100     switch (widget) {
00101       case EVW_ZOOMIN: DoZoomInOutWindow(ZOOM_IN,  this); break;
00102       case EVW_ZOOMOUT: DoZoomInOutWindow(ZOOM_OUT, this); break;
00103 
00104       case EVW_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'
00105         Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00106         int x = this->viewport->scrollpos_x; // Where is the main looking at
00107         int y = this->viewport->scrollpos_y;
00108 
00109         /* set this view to same location. Based on the center, adjusting for zoom */
00110         w->viewport->dest_scrollpos_x =  x - (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
00111         w->viewport->dest_scrollpos_y =  y - (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
00112         w->viewport->follow_vehicle   = INVALID_VEHICLE;
00113         break;
00114       }
00115 
00116       case EVW_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'
00117         const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00118         int x = w->viewport->scrollpos_x;
00119         int y = w->viewport->scrollpos_y;
00120 
00121         this->viewport->dest_scrollpos_x =  x + (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
00122         this->viewport->dest_scrollpos_y =  y + (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
00123         break;
00124       }
00125     }
00126   }
00127 
00128   virtual void OnResize()
00129   {
00130     if (this->viewport != NULL) {
00131       NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(EVW_VIEWPORT);
00132       nvp->UpdateViewportCoordinates(this);
00133     }
00134   }
00135 
00136   virtual void OnScroll(Point delta)
00137   {
00138     this->viewport->scrollpos_x += ScaleByZoom(delta.x, this->viewport->zoom);
00139     this->viewport->scrollpos_y += ScaleByZoom(delta.y, this->viewport->zoom);
00140     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
00141     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
00142   }
00143 
00144   virtual void OnMouseWheel(int wheel)
00145   {
00146     if (_settings_client.gui.scrollwheel_scrolling == 0) {
00147       ZoomInOrOutToCursorWindow(wheel < 0, this);
00148     }
00149   }
00150 
00156   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
00157   {
00158     if (!gui_scope) return;
00159     /* Only handle zoom message if intended for us (msg ZOOM_IN/ZOOM_OUT) */
00160     HandleZoomMessage(this, this->viewport, EVW_ZOOMIN, EVW_ZOOMOUT);
00161   }
00162 };
00163 
00164 static const WindowDesc _extra_view_port_desc(
00165   WDP_AUTO, 300, 268,
00166   WC_EXTRA_VIEW_PORT, WC_NONE,
00167   WDF_UNCLICK_BUTTONS,
00168   _nested_extra_view_port_widgets, lengthof(_nested_extra_view_port_widgets)
00169 );
00170 
00175 void ShowExtraViewPortWindow(TileIndex tile)
00176 {
00177   int i = 0;
00178 
00179   /* find next free window number for extra viewport */
00180   while (FindWindowById(WC_EXTRA_VIEW_PORT, i) != NULL) i++;
00181 
00182   new ExtraViewportWindow(&_extra_view_port_desc, i, tile);
00183 }
00184 
00190 void ShowExtraViewPortWindowForTileUnderCursor()
00191 {
00192   /* Use tile under mouse as center for new viewport.
00193    * Do this before creating the window, it might appear just below the mouse. */
00194   Point pt = GetTileBelowCursor();
00195   ShowExtraViewPortWindow(pt.x != -1 ? TileVirtXY(pt.x, pt.y) : INVALID_TILE);
00196 }

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