summaryrefslogtreecommitdiff
path: root/src/subsidy_gui.cpp
blob: fe3c55c111b9d8ffef156e43ff7f4dd21e6b09c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */

/** @file subsidy_gui.cpp GUI for subsidies. */

#include "stdafx.h"
#include "industry.h"
#include "town.h"
#include "window_gui.h"
#include "strings_func.h"
#include "date_func.h"
#include "viewport_func.h"
#include "gui.h"
#include "subsidy_func.h"
#include "subsidy_base.h"
#include "core/geometry_func.hpp"

#include "widgets/subsidy_widget.h"

#include "table/strings.h"

#include "safeguards.h"

struct SubsidyListWindow : Window {
	Scrollbar *vscroll;

	SubsidyListWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc)
	{
		this->CreateNestedTree();
		this->vscroll = this->GetScrollbar(WID_SUL_SCROLLBAR);
		this->FinishInitNested(window_number);
		this->OnInvalidateData(0);
	}

	void OnClick(Point pt, int widget, int click_count) override
	{
		if (widget != WID_SUL_PANEL) return;

		int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_SUL_PANEL, WD_FRAMERECT_TOP);
		int num = 0;
		for (const Subsidy *s : Subsidy::Iterate()) {
			if (!s->IsAwarded()) {
				y--;
				if (y == 0) {
					this->HandleClick(s);
					return;
				}
				num++;
			}
		}

		if (num == 0) {
			y--; // "None"
			if (y < 0) return;
		}

		y -= 2; // "Services already subsidised:"
		if (y < 0) return;

		for (const Subsidy *s : Subsidy::Iterate()) {
			if (s->IsAwarded()) {
				y--;
				if (y == 0) {
					this->HandleClick(s);
					return;
				}
			}
		}
	}

	void HandleClick(const Subsidy *s)
	{
		/* determine src coordinate for subsidy and try to scroll to it */
		TileIndex xy;
		switch (s->src_type) {
			case ST_INDUSTRY: xy = Industry::Get(s->src)->location.tile; break;
			case ST_TOWN:     xy =     Town::Get(s->src)->xy; break;
			default: NOT_REACHED();
		}

		if (_ctrl_pressed || !ScrollMainWindowToTile(xy)) {
			if (_ctrl_pressed) ShowExtraViewportWindow(xy);

			/* otherwise determine dst coordinate for subsidy and scroll to it */
			switch (s->dst_type) {
				case ST_INDUSTRY: xy = Industry::Get(s->dst)->location.tile; break;
				case ST_TOWN:     xy =     Town::Get(s->dst)->xy; break;
				default: NOT_REACHED();
			}

			if (_ctrl_pressed) {
				ShowExtraViewportWindow(xy);
			} else {
				ScrollMainWindowToTile(xy);
			}
		}
	}

	/**
	 * Count the number of lines in this window.
	 * @return the number of lines
	 */
	uint CountLines()
	{
		/* Count number of (non) awarded subsidies */
		uint num_awarded = 0;
		uint num_not_awarded = 0;
		for (const Subsidy *s : Subsidy::Iterate()) {
			if (!s->IsAwarded()) {
				num_not_awarded++;
			} else {
				num_awarded++;
			}
		}

		/* Count the 'none' lines */
		if (num_awarded     == 0) num_awarded = 1;
		if (num_not_awarded == 0) num_not_awarded = 1;

		/* Offered, accepted and an empty line before the accepted ones. */
		return 3 + num_awarded + num_not_awarded;
	}

	void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override
	{
		if (widget != WID_SUL_PANEL) return;
		Dimension d = maxdim(GetStringBoundingBox(STR_SUBSIDIES_OFFERED_TITLE), GetStringBoundingBox(STR_SUBSIDIES_SUBSIDISED_TITLE));

		resize->height = d.height;

		d.height *= 5;
		d.width += padding.width + WD_FRAMERECT_RIGHT + WD_FRAMERECT_LEFT;
		d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
		*size = maxdim(*size, d);
	}

	void DrawWidget(const Rect &r, int widget) const override
	{
		if (widget != WID_SUL_PANEL) return;

		YearMonthDay ymd;
		ConvertDateToYMD(_date, &ymd);

		int right = r.right - WD_FRAMERECT_RIGHT;
		int y = r.top + WD_FRAMERECT_TOP;
		int x = r.left + WD_FRAMERECT_LEFT;

		int pos = -this->vscroll->GetPosition();
		const int cap = this->vscroll->GetCapacity();

		/* Section for drawing the offered subsidies */
		if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_TITLE);
		pos++;

		uint num = 0;
		for (const Subsidy *s : Subsidy::Iterate()) {
			if (!s->IsAwarded()) {
				if (IsInsideMM(pos, 0, cap)) {
					/* Displays the two offered towns */
					SetupSubsidyDecodeParam(s, true);
					SetDParam(7, _date - ymd.day + s->remaining * 32);
					DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_FROM_TO);
				}
				pos++;
				num++;
			}
		}

		if (num == 0) {
			if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
			pos++;
		}

		/* Section for drawing the already granted subsidies */
		pos++;
		if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_TITLE);
		pos++;
		num = 0;

		for (const Subsidy *s : Subsidy::Iterate()) {
			if (s->IsAwarded()) {
				if (IsInsideMM(pos, 0, cap)) {
					SetupSubsidyDecodeParam(s, true);
					SetDParam(7, s->awarded);
					SetDParam(8, _date - ymd.day + s->remaining * 32);

					/* Displays the two connected stations */
					DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_FROM_TO);
				}
				pos++;
				num++;
			}
		}

		if (num == 0) {
			if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
			pos++;
		}
	}

	void OnResize() override
	{
		this->vscroll->SetCapacityFromWidget(this, WID_SUL_PANEL);
	}

	/**
	 * Some data on this window has become invalid.
	 * @param data Information about the changed data.
	 * @param gui_scope Whether the call is done from GUI scope. You may not do everything when not in GUI scope. See #InvalidateWindowData() for details.
	 */
	void OnInvalidateData(int data = 0, bool gui_scope = true) override
	{
		if (!gui_scope) return;
		this->vscroll->SetCount(this->CountLines());
	}
};

static const NWidgetPart _nested_subsidies_list_widgets[] = {
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
		NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_SUBSIDIES_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
		NWidget(WWT_SHADEBOX, COLOUR_BROWN),
		NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
		NWidget(WWT_STICKYBOX, COLOUR_BROWN),
	EndContainer(),
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_PANEL, COLOUR_BROWN, WID_SUL_PANEL), SetDataTip(0x0, STR_SUBSIDIES_TOOLTIP_CLICK_ON_SERVICE_TO_CENTER), SetResize(1, 1), SetScrollbar(WID_SUL_SCROLLBAR), EndContainer(),
		NWidget(NWID_VERTICAL),
			NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_SUL_SCROLLBAR),
			NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
		EndContainer(),
	EndContainer(),
};

static WindowDesc _subsidies_list_desc(
	WDP_AUTO, "list_subsidies", 500, 127,
	WC_SUBSIDIES_LIST, WC_NONE,
	0,
	_nested_subsidies_list_widgets, lengthof(_nested_subsidies_list_widgets)
);


void ShowSubsidiesList()
{
	AllocateWindowDescFront<SubsidyListWindow>(&_subsidies_list_desc, 0);
}