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DisplayView.cpp
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1 /* Project Starshatter 4.5
2  Destroyer Studios LLC
3  Copyright © 1997-2004. All Rights Reserved.
4 
5  SUBSYSTEM: Stars.exe
6  FILE: DisplayView.cpp
7  AUTHOR: John DiCamillo
8 
9 
10  OVERVIEW
11  ========
12  View class for Quantum Destination HUD Overlay
13 */
14 
15 #include "MemDebug.h"
16 #include "DisplayView.h"
17 #include "QuantumDrive.h"
18 #include "HUDView.h"
19 #include "Ship.h"
20 #include "Element.h"
21 #include "Sim.h"
22 #include "StarSystem.h"
23 #include "FormatUtil.h"
24 
25 #include "Color.h"
26 #include "Window.h"
27 #include "Video.h"
28 #include "Screen.h"
29 #include "DataLoader.h"
30 #include "Scene.h"
31 #include "Font.h"
32 #include "FontMgr.h"
33 #include "Keyboard.h"
34 #include "Mouse.h"
35 #include "Game.h"
36 #include "Menu.h"
37 
38 // +====================================================================+
39 
40 class DisplayElement
41 {
42 public:
43  static const char* TYPENAME() { return "DisplayElement"; }
44 
45  DisplayElement() : image(0), font(0), blend(0), hold(0), fade_in(0), fade_out(0) { }
46 
47  Text text;
48  Bitmap* image;
49  Font* font;
50  Color color;
51  Rect rect;
52  int blend;
53  double hold;
54  double fade_in;
55  double fade_out;
56 };
57 
58 // +====================================================================+
59 
60 DisplayView* display_view = 0;
61 
62 DisplayView::DisplayView(Window* c)
63 : View(c), width(0), height(0), xcenter(0), ycenter(0)
64 {
65  display_view = this;
66  DisplayView::OnWindowMove();
67 }
68 
69 DisplayView::~DisplayView()
70 {
71  if (display_view == this)
72  display_view = 0;
73 
74  elements.destroy();
75 }
76 
77 DisplayView*
78 DisplayView::GetInstance()
79 {
80  if (display_view == 0)
81  display_view = new DisplayView(0);
82 
83  return display_view;
84 }
85 
86 void
87 DisplayView::OnWindowMove()
88 {
89  if (window) {
90  width = window->Width();
91  height = window->Height();
92  xcenter = (width / 2.0) - 0.5;
93  ycenter = (height / 2.0) + 0.5;
94  }
95 }
96 
97 // +--------------------------------------------------------------------+
98 
99 void
100 DisplayView::Refresh()
101 {
102  ListIter<DisplayElement> iter = elements;
103  while (++iter) {
104  DisplayElement* elem = iter.value();
105 
106  // convert relative rect to window rect:
107  Rect elem_rect = elem->rect;
108  if (elem_rect.x == 0 && elem_rect.y == 0 && elem_rect.w == 0 && elem_rect.h == 0) {
109  // stretch to fit
110  elem_rect.w = width;
111  elem_rect.h = height;
112  }
113  else if (elem_rect.w < 0 && elem_rect.h < 0) {
114  // center image in window
115  elem_rect.w *= -1;
116  elem_rect.h *= -1;
117 
118  elem_rect.x = (width - elem_rect.w)/2;
119  elem_rect.y = (height - elem_rect.h)/2;
120  }
121  else {
122  // offset from right or bottom
123  if (elem_rect.x < 0) elem_rect.x += width;
124  if (elem_rect.y < 0) elem_rect.y += height;
125  }
126 
127  // compute current fade,
128  // assumes fades are 1 second or less:
129  double fade = 0;
130  if (elem->fade_in > 0) fade = 1 - elem->fade_in;
131  else if (elem->hold > 0) fade = 1;
132  else if (elem->fade_out > 0) fade = elem->fade_out;
133 
134  // draw text:
135  if (elem->text.length() && elem->font) {
136  elem->font->SetColor(elem->color);
137  elem->font->SetAlpha(fade);
138  window->SetFont(elem->font);
139  window->DrawText(elem->text, elem->text.length(), elem_rect, DT_WORDBREAK);
140  }
141 
142  // draw image:
143  else if (elem->image) {
144  window->FadeBitmap( elem_rect.x,
145  elem_rect.y,
146  elem_rect.x + elem_rect.w,
147  elem_rect.y + elem_rect.h,
148  elem->image,
149  elem->color * fade,
150  elem->blend );
151 
152  }
153  }
154 }
155 
156 // +--------------------------------------------------------------------+
157 
158 void
159 DisplayView::ExecFrame()
160 {
161  double seconds = Game::GUITime();
162 
163  ListIter<DisplayElement> iter = elements;
164  while (++iter) {
165  DisplayElement* elem = iter.value();
166 
167  if (elem->fade_in > 0)
168  elem->fade_in -= seconds;
169 
170  else if (elem->hold > 0)
171  elem->hold -= seconds;
172 
173  else if (elem->fade_out > 0)
174  elem->fade_out -= seconds;
175 
176  else
177  delete iter.removeItem();
178  }
179 }
180 
181 // +--------------------------------------------------------------------+
182 
183 void
184 DisplayView::ClearDisplay()
185 {
186  elements.destroy();
187 }
188 
189 // +--------------------------------------------------------------------+
190 
191 void
192 DisplayView::AddText( const char* text,
193 Font* font,
194 Color color,
195 const Rect& rect,
196 double hold,
197 double fade_in,
198 double fade_out)
199 {
200  DisplayElement* elem = new(__FILE__,__LINE__) DisplayElement;
201 
202  if (fade_in == 0 && fade_out == 0 && hold == 0)
203  hold = 300;
204 
205  elem->text = text;
206  elem->font = font;
207  elem->color = color;
208  elem->rect = rect;
209  elem->hold = hold;
210  elem->fade_in = fade_in;
211  elem->fade_out = fade_out;
212 
213  elements.append(elem);
214 }
215 
216 void
217 DisplayView::AddImage(Bitmap* bmp,
218 Color color,
219 int blend,
220 const Rect& rect,
221 double hold,
222 double fade_in,
223 double fade_out)
224 {
225  DisplayElement* elem = new(__FILE__,__LINE__) DisplayElement;
226 
227  if (fade_in == 0 && fade_out == 0 && hold == 0)
228  hold = 300;
229 
230  elem->image = bmp;
231  elem->rect = rect;
232  elem->color = color;
233  elem->blend = blend;
234  elem->hold = hold;
235  elem->fade_in = fade_in;
236  elem->fade_out = fade_out;
237 
238  elements.append(elem);
239 }