OpenTTD
viewport_gui.cpp
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1 /* $Id: viewport_gui.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * 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.
6  * 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.
7  * 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/>.
8  */
9 
12 #include "stdafx.h"
13 #include "landscape.h"
14 #include "window_gui.h"
15 #include "viewport_func.h"
16 #include "strings_func.h"
17 #include "zoom_func.h"
18 #include "window_func.h"
19 
21 
22 #include "table/strings.h"
23 #include "table/sprites.h"
24 
25 #include "safeguards.h"
26 
27 /* Extra ViewPort Window Stuff */
28 static const NWidgetPart _nested_extra_view_port_widgets[] = {
30  NWidget(WWT_CLOSEBOX, COLOUR_GREY),
31  NWidget(WWT_CAPTION, COLOUR_GREY, WID_EV_CAPTION), SetDataTip(STR_EXTRA_VIEW_PORT_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
32  NWidget(WWT_SHADEBOX, COLOUR_GREY),
33  NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
34  NWidget(WWT_STICKYBOX, COLOUR_GREY),
35  EndContainer(),
36  NWidget(WWT_PANEL, COLOUR_GREY),
37  NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_EV_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),
38  EndContainer(),
40  NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_IN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),
41  NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_EV_ZOOM_OUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),
43  NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),
44  SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),
45  NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_EV_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),
46  SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),
47  EndContainer(),
48  EndContainer(),
50  NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),
51  NWidget(WWT_RESIZEBOX, COLOUR_GREY),
52  EndContainer(),
53 };
54 
55 class ExtraViewportWindow : public Window {
56 public:
58  {
59  this->InitNested(window_number);
60 
61  NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
64 
65  Point pt;
66  if (tile == INVALID_TILE) {
67  /* No tile? Use center of main viewport. */
68  const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
69 
70  /* center on same place as main window (zoom is maximum, no adjustment needed) */
71  pt.x = w->viewport->scrollpos_x + w->viewport->virtual_width / 2;
72  pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;
73  } else {
74  pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));
75  }
76 
77  this->viewport->scrollpos_x = pt.x - this->viewport->virtual_width / 2;
78  this->viewport->scrollpos_y = pt.y - this->viewport->virtual_height / 2;
81  }
82 
83  virtual void SetStringParameters(int widget) const
84  {
85  switch (widget) {
86  case WID_EV_CAPTION:
87  /* set the number in the title bar */
88  SetDParam(0, this->window_number + 1);
89  break;
90  }
91  }
92 
93  virtual void OnClick(Point pt, int widget, int click_count)
94  {
95  switch (widget) {
96  case WID_EV_ZOOM_IN: DoZoomInOutWindow(ZOOM_IN, this); break;
97  case WID_EV_ZOOM_OUT: DoZoomInOutWindow(ZOOM_OUT, this); break;
98 
99  case WID_EV_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'
101  int x = this->viewport->scrollpos_x; // Where is the main looking at
102  int y = this->viewport->scrollpos_y;
103 
104  /* set this view to same location. Based on the center, adjusting for zoom */
108  break;
109  }
110 
111  case WID_EV_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'
112  const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
113  int x = w->viewport->scrollpos_x;
114  int y = w->viewport->scrollpos_y;
115 
116  this->viewport->dest_scrollpos_x = x + (w->viewport->virtual_width - this->viewport->virtual_width) / 2;
118  break;
119  }
120  }
121  }
122 
123  virtual void OnResize()
124  {
125  if (this->viewport != NULL) {
126  NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_EV_VIEWPORT);
127  nvp->UpdateViewportCoordinates(this);
128  }
129  }
130 
131  virtual void OnScroll(Point delta)
132  {
133  this->viewport->scrollpos_x += ScaleByZoom(delta.x, this->viewport->zoom);
134  this->viewport->scrollpos_y += ScaleByZoom(delta.y, this->viewport->zoom);
137  }
138 
139  virtual void OnMouseWheel(int wheel)
140  {
142  ZoomInOrOutToCursorWindow(wheel < 0, this);
143  }
144  }
145 
151  virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
152  {
153  if (!gui_scope) return;
154  /* Only handle zoom message if intended for us (msg ZOOM_IN/ZOOM_OUT) */
156  }
157 };
158 
159 static WindowDesc _extra_view_port_desc(
160  WDP_AUTO, "extra_viewport", 300, 268,
162  0,
163  _nested_extra_view_port_widgets, lengthof(_nested_extra_view_port_widgets)
164 );
165 
171 {
172  int i = 0;
173 
174  /* find next free window number for extra viewport */
175  while (FindWindowById(WC_EXTRA_VIEW_PORT, i) != NULL) i++;
176 
177  new ExtraViewportWindow(&_extra_view_port_desc, i, tile);
178 }
179 
186 {
187  /* Use tile under mouse as center for new viewport.
188  * Do this before creating the window, it might appear just below the mouse. */
189  Point pt = GetTileBelowCursor();
190  ShowExtraViewPortWindow(pt.x != -1 ? TileVirtXY(pt.x, pt.y) : INVALID_TILE);
191 }