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 "widgets/viewport_widget.h"
00021 
00022 #include "table/strings.h"
00023 #include "table/sprites.h"
00024 
00025 /* Extra ViewPort Window Stuff */
00026 static const NWidgetPart _nested_extra_view_port_widgets[] = {
00027   NWidget(NWID_HORIZONTAL),
00028     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
00029     NWidget(WWT_CAPTION, COLOUR_GREY, WID_EV_CAPTION), SetDataTip(STR_EXTRA_VIEW_PORT_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00030     NWidget(WWT_SHADEBOX, COLOUR_GREY),
00031     NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
00032     NWidget(WWT_STICKYBOX, COLOUR_GREY),
00033   EndContainer(),
00034   NWidget(WWT_PANEL, COLOUR_GREY),
00035     NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_EV_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),
00036   EndContainer(),
00037   NWidget(NWID_HORIZONTAL),
00038     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_IN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),
00039     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_OUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),
00040     NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
00041       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),
00042                     SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),
00043       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),
00044                     SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),
00045     EndContainer(),
00046   EndContainer(),
00047   NWidget(NWID_HORIZONTAL),
00048     NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),
00049     NWidget(WWT_RESIZEBOX, COLOUR_GREY),
00050   EndContainer(),
00051 };
00052 
00053 class ExtraViewportWindow : public Window {
00054 public:
00055   ExtraViewportWindow(WindowDesc *desc, int window_number, TileIndex tile) : Window(desc)
00056   {
00057     this->InitNested(window_number);
00058 
00059     NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
00060     nvp->InitializeViewport(this, 0, ZOOM_LVL_VIEWPORT);
00061     if (_settings_client.gui.zoom_min == ZOOM_LVL_VIEWPORT) this->DisableWidget(WID_EV_ZOOM_IN);
00062 
00063     Point pt;
00064     if (tile == INVALID_TILE) {
00065       /* No tile? Use center of main viewport. */
00066       const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00067 
00068       /* center on same place as main window (zoom is maximum, no adjustment needed) */
00069       pt.x = w->viewport->scrollpos_x + w->viewport->virtual_width / 2;
00070       pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;
00071     } else {
00072       pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));
00073     }
00074 
00075     this->viewport->scrollpos_x = pt.x - this->viewport->virtual_width / 2;
00076     this->viewport->scrollpos_y = pt.y - this->viewport->virtual_height / 2;
00077     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
00078     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
00079   }
00080 
00081   virtual void SetStringParameters(int widget) const
00082   {
00083     switch (widget) {
00084       case WID_EV_CAPTION:
00085         /* set the number in the title bar */
00086         SetDParam(0, this->window_number + 1);
00087         break;
00088     }
00089   }
00090 
00091   virtual void OnClick(Point pt, int widget, int click_count)
00092   {
00093     switch (widget) {
00094       case WID_EV_ZOOM_IN: DoZoomInOutWindow(ZOOM_IN,  this); break;
00095       case WID_EV_ZOOM_OUT: DoZoomInOutWindow(ZOOM_OUT, this); break;
00096 
00097       case WID_EV_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'
00098         Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00099         int x = this->viewport->scrollpos_x; // Where is the main looking at
00100         int y = this->viewport->scrollpos_y;
00101 
00102         /* set this view to same location. Based on the center, adjusting for zoom */
00103         w->viewport->dest_scrollpos_x =  x - (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
00104         w->viewport->dest_scrollpos_y =  y - (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
00105         w->viewport->follow_vehicle   = INVALID_VEHICLE;
00106         break;
00107       }
00108 
00109       case WID_EV_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'
00110         const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
00111         int x = w->viewport->scrollpos_x;
00112         int y = w->viewport->scrollpos_y;
00113 
00114         this->viewport->dest_scrollpos_x =  x + (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
00115         this->viewport->dest_scrollpos_y =  y + (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
00116         break;
00117       }
00118     }
00119   }
00120 
00121   virtual void OnResize()
00122   {
00123     if (this->viewport != NULL) {
00124       NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
00125       nvp->UpdateViewportCoordinates(this);
00126     }
00127   }
00128 
00129   virtual void OnScroll(Point delta)
00130   {
00131     this->viewport->scrollpos_x += ScaleByZoom(delta.x, this->viewport->zoom);
00132     this->viewport->scrollpos_y += ScaleByZoom(delta.y, this->viewport->zoom);
00133     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
00134     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
00135   }
00136 
00137   virtual void OnMouseWheel(int wheel)
00138   {
00139     if (_settings_client.gui.scrollwheel_scrolling == 0) {
00140       ZoomInOrOutToCursorWindow(wheel < 0, this);
00141     }
00142   }
00143 
00149   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
00150   {
00151     if (!gui_scope) return;
00152     /* Only handle zoom message if intended for us (msg ZOOM_IN/ZOOM_OUT) */
00153     HandleZoomMessage(this, this->viewport, WID_EV_ZOOM_IN, WID_EV_ZOOM_OUT);
00154   }
00155 };
00156 
00157 static WindowDesc _extra_view_port_desc(
00158   WDP_AUTO, "extra_viewport", 300, 268,
00159   WC_EXTRA_VIEW_PORT, WC_NONE,
00160   0,
00161   _nested_extra_view_port_widgets, lengthof(_nested_extra_view_port_widgets)
00162 );
00163 
00168 void ShowExtraViewPortWindow(TileIndex tile)
00169 {
00170   int i = 0;
00171 
00172   /* find next free window number for extra viewport */
00173   while (FindWindowById(WC_EXTRA_VIEW_PORT, i) != NULL) i++;
00174 
00175   new ExtraViewportWindow(&_extra_view_port_desc, i, tile);
00176 }
00177 
00183 void ShowExtraViewPortWindowForTileUnderCursor()
00184 {
00185   /* Use tile under mouse as center for new viewport.
00186    * Do this before creating the window, it might appear just below the mouse. */
00187   Point pt = GetTileBelowCursor();
00188   ShowExtraViewPortWindow(pt.x != -1 ? TileVirtXY(pt.x, pt.y) : INVALID_TILE);
00189 }