# viewport_gui.cpp

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    00001 /* $Id: viewport_gui.cpp 18966 2010-01-30 18:34:48Z frosch $ */
    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 "gfx_func.h"
    00017 #include "strings_func.h"
    00018 #include "zoom_func.h"
    00019 #include "window_func.h"
    00020
    00021 #include "table/strings.h"
    00022 #include "table/sprites.h"
    00023
    00025 enum ExtraViewportWindowWidgets {
    00026   EVW_CAPTION,
    00027   EVW_VIEWPORT,
    00028   EVW_ZOOMIN,
    00029   EVW_ZOOMOUT,
    00030   EVW_MAIN_TO_VIEW,
    00031   EVW_VIEW_TO_MAIN,
    00032 };
    00033
    00034 /* Extra ViewPort Window Stuff */
    00035 static const NWidgetPart _nested_extra_view_port_widgets[] = {
    00036   NWidget(NWID_HORIZONTAL),
    00037     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
    00038     NWidget(WWT_CAPTION, COLOUR_GREY, EVW_CAPTION), SetDataTip(STR_EXTRA_VIEW_PORT_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00039     NWidget(WWT_SHADEBOX, COLOUR_GREY),
    00040     NWidget(WWT_STICKYBOX, COLOUR_GREY),
    00041   EndContainer(),
    00042   NWidget(WWT_PANEL, COLOUR_GREY),
    00043     NWidget(NWID_VIEWPORT, INVALID_COLOUR, EVW_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),
    00044   EndContainer(),
    00045   NWidget(NWID_HORIZONTAL),
    00046     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMIN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),
    00047     NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMOUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),
    00048     NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
    00049       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),
    00050                     SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),
    00051       NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),
    00052                     SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),
    00053     EndContainer(),
    00054   EndContainer(),
    00055   NWidget(NWID_HORIZONTAL),
    00056     NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),
    00057     NWidget(WWT_RESIZEBOX, COLOUR_GREY),
    00058   EndContainer(),
    00059 };
    00060
    00061 class ExtraViewportWindow : public Window {
    00062 public:
    00063   ExtraViewportWindow(const WindowDesc *desc, int window_number, TileIndex tile) : Window()
    00064   {
    00065     this->InitNested(desc, window_number);
    00066
    00067     NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(EVW_VIEWPORT);
    00068     nvp->InitializeViewport(this, 0, ZOOM_LVL_NORMAL);
    00069     this->DisableWidget(EVW_ZOOMIN);
    00070
    00071     Point pt;
    00072     if (tile == INVALID_TILE) {
    00073       /* the main window with the main view */
    00074       const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00075
    00076       /* center on same place as main window (zoom is maximum, no adjustment needed) */
    00077       pt.x = w->viewport->scrollpos_x + w->viewport->virtual_width / 2;
    00078       pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;
    00079     } else {
    00080       pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));
    00081     }
    00082
    00083     this->viewport->scrollpos_x = pt.x - this->viewport->virtual_width / 2;
    00084     this->viewport->scrollpos_y = pt.y - this->viewport->virtual_height / 2;
    00085     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
    00086     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
    00087   }
    00088
    00089   virtual void SetStringParameters(int widget) const
    00090   {
    00091     switch (widget) {
    00092       case EVW_CAPTION:
    00093         /* set the number in the title bar */
    00094         SetDParam(0, this->window_number + 1);
    00095         break;
    00096     }
    00097   }
    00098
    00099   virtual void OnPaint()
    00100   {
    00101     this->DrawWidgets();
    00102   }
    00103
    00104   virtual void OnClick(Point pt, int widget, int click_count)
    00105   {
    00106     switch (widget) {
    00107       case EVW_ZOOMIN: DoZoomInOutWindow(ZOOM_IN,  this); break;
    00108       case EVW_ZOOMOUT: DoZoomInOutWindow(ZOOM_OUT, this); break;
    00109
    00110       case EVW_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'
    00111         Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00112         int x = this->viewport->scrollpos_x; // Where is the main looking at
    00113         int y = this->viewport->scrollpos_y;
    00114
    00115         /* set this view to same location. Based on the center, adjusting for zoom */
    00116         w->viewport->dest_scrollpos_x =  x - (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
    00117         w->viewport->dest_scrollpos_y =  y - (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
    00118         w->viewport->follow_vehicle   = INVALID_VEHICLE;
    00119       } break;
    00120
    00121       case EVW_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'
    00122         const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
    00123         int x = w->viewport->scrollpos_x;
    00124         int y = w->viewport->scrollpos_y;
    00125
    00126         this->viewport->dest_scrollpos_x =  x + (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;
    00127         this->viewport->dest_scrollpos_y =  y + (w->viewport->virtual_height - this->viewport->virtual_height) / 2;
    00128       } break;
    00129     }
    00130   }
    00131
    00132   virtual void OnResize()
    00133   {
    00134     if (this->viewport != NULL) {
    00135       NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(EVW_VIEWPORT);
    00136       nvp->UpdateViewportCoordinates(this);
    00137     }
    00138   }
    00139
    00140   virtual void OnScroll(Point delta)
    00141   {
    00142     const ViewPort *vp = IsPtInWindowViewport(this, _cursor.pos.x, _cursor.pos.y);
    00143     if (vp == NULL) return;
    00144
    00145     this->viewport->scrollpos_x += ScaleByZoom(delta.x, vp->zoom);
    00146     this->viewport->scrollpos_y += ScaleByZoom(delta.y, vp->zoom);
    00147     this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
    00148     this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
    00149   }
    00150
    00151   virtual void OnMouseWheel(int wheel)
    00152   {
    00153     ZoomInOrOutToCursorWindow(wheel < 0, this);
    00154   }
    00155
    00156   virtual void OnInvalidateData(int data = 0)
    00157   {
    00158     /* Only handle zoom message if intended for us (msg ZOOM_IN/ZOOM_OUT) */
    00159     HandleZoomMessage(this, this->viewport, EVW_ZOOMIN, EVW_ZOOMOUT);
    00160   }
    00161 };
    00162
    00163 static const WindowDesc _extra_view_port_desc(
    00164   WDP_AUTO, 300, 268,
    00165   WC_EXTRA_VIEW_PORT, WC_NONE,
    00166   WDF_UNCLICK_BUTTONS,
    00167   _nested_extra_view_port_widgets, lengthof(_nested_extra_view_port_widgets)
    00168 );
    00169
    00170 void ShowExtraViewPortWindow(TileIndex tile)
    00171 {
    00172   int i = 0;
    00173
    00174   /* find next free window number for extra viewport */
    00175   while (FindWindowById(WC_EXTRA_VIEW_PORT, i) != NULL) i++;
    00176
    00177   new ExtraViewportWindow(&_extra_view_port_desc, i, tile);
    00178 }