# 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_STICKYBOX, COLOUR_GREY),
    00032   EndContainer(),
    00033   NWidget(WWT_PANEL, COLOUR_GREY),
    00034     NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_EV_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),
    00035   EndContainer(),
    00036   NWidget(NWID_HORIZONTAL),
    00037     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_IN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),
    00038     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_OUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),
    00039     NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
    00040       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),
    00041                     SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),
    00042       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),
    00043                     SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),
    00044     EndContainer(),
    00045   EndContainer(),
    00046   NWidget(NWID_HORIZONTAL),
    00047     NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),
    00048     NWidget(WWT_RESIZEBOX, COLOUR_GREY),
    00049   EndContainer(),
    00050 };
    00051
    00052 class ExtraViewportWindow : public Window {
    00053 public:
    00054   ExtraViewportWindow(const WindowDesc *desc, int window_number, TileIndex tile) : Window()
    00055   {
    00056     this->InitNested(desc, window_number);
    00057
    00058     NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
    00059     nvp->InitializeViewport(this, 0, ZOOM_LVL_VIEWPORT);
    00060     if (_settings_client.gui.zoom_min == ZOOM_LVL_VIEWPORT) this->DisableWidget(WID_EV_ZOOM_IN);
    00061
    00062     Point pt;
    00063     if (tile == INVALID_TILE) {
    00064       /* No tile? Use center of main viewport. */
    00065       const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00066
    00067       /* center on same place as main window (zoom is maximum, no adjustment needed) */
    00068       pt.x = w->viewport->scrollpos_x + w->viewport->virtual_width / 2;
    00069       pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;
    00070     } else {
    00071       pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));
    00072     }
    00073
    00074     this->viewport->scrollpos_x = pt.x - this->viewport->virtual_width / 2;
    00075     this->viewport->scrollpos_y = pt.y - this->viewport->virtual_height / 2;
    00076     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
    00077     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
    00078   }
    00079
    00080   virtual void SetStringParameters(int widget) const
    00081   {
    00082     switch (widget) {
    00083       case WID_EV_CAPTION:
    00084         /* set the number in the title bar */
    00085         SetDParam(0, this->window_number + 1);
    00086         break;
    00087     }
    00088   }
    00089
    00090   virtual void OnClick(Point pt, int widget, int click_count)
    00091   {
    00092     switch (widget) {
    00093       case WID_EV_ZOOM_IN: DoZoomInOutWindow(ZOOM_IN,  this); break;
    00094       case WID_EV_ZOOM_OUT: DoZoomInOutWindow(ZOOM_OUT, this); break;
    00095
    00096       case WID_EV_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'
    00097         Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00098         int x = this->viewport->scrollpos_x; // Where is the main looking at
    00099         int y = this->viewport->scrollpos_y;
    00100
    00101         /* set this view to same location. Based on the center, adjusting for zoom */
    00102         w->viewport->dest_scrollpos_x =  x - (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
    00103         w->viewport->dest_scrollpos_y =  y - (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
    00104         w->viewport->follow_vehicle   = INVALID_VEHICLE;
    00105         break;
    00106       }
    00107
    00108       case WID_EV_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'
    00109         const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00110         int x = w->viewport->scrollpos_x;
    00111         int y = w->viewport->scrollpos_y;
    00112
    00113         this->viewport->dest_scrollpos_x =  x + (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
    00114         this->viewport->dest_scrollpos_y =  y + (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
    00115         break;
    00116       }
    00117     }
    00118   }
    00119
    00120   virtual void OnResize()
    00121   {
    00122     if (this->viewport != NULL) {
    00123       NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
    00124       nvp->UpdateViewportCoordinates(this);
    00125     }
    00126   }
    00127
    00128   virtual void OnScroll(Point delta)
    00129   {
    00130     this->viewport->scrollpos_x += ScaleByZoom(delta.x, this->viewport->zoom);
    00131     this->viewport->scrollpos_y += ScaleByZoom(delta.y, this->viewport->zoom);
    00132     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
    00133     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
    00134   }
    00135
    00136   virtual void OnMouseWheel(int wheel)
    00137   {
    00138     if (_settings_client.gui.scrollwheel_scrolling == 0) {
    00139       ZoomInOrOutToCursorWindow(wheel < 0, this);
    00140     }
    00141   }
    00142
    00148   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
    00149   {
    00150     if (!gui_scope) return;
    00151     /* Only handle zoom message if intended for us (msg ZOOM_IN/ZOOM_OUT) */
    00152     HandleZoomMessage(this, this->viewport, WID_EV_ZOOM_IN, WID_EV_ZOOM_OUT);
    00153   }
    00154 };
    00155
    00156 static const WindowDesc _extra_view_port_desc(
    00157   WDP_AUTO, 300, 268,
    00158   WC_EXTRA_VIEW_PORT, WC_NONE,
    00159   0,
    00160   _nested_extra_view_port_widgets, lengthof(_nested_extra_view_port_widgets)
    00161 );
    00162
    00167 void ShowExtraViewPortWindow(TileIndex tile)
    00168 {
    00169   int i = 0;
    00170
    00171   /* find next free window number for extra viewport */
    00172   while (FindWindowById(WC_EXTRA_VIEW_PORT, i) != NULL) i++;
    00173
    00174   new ExtraViewportWindow(&_extra_view_port_desc, i, tile);
    00175 }
    00176
    00182 void ShowExtraViewPortWindowForTileUnderCursor()
    00183 {
    00184   /* Use tile under mouse as center for new viewport.
    00185    * Do this before creating the window, it might appear just below the mouse. */
    00186   Point pt = GetTileBelowCursor();
    00187   ShowExtraViewPortWindow(pt.x != -1 ? TileVirtXY(pt.x, pt.y) : INVALID_TILE);
    00188 }