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
|
/*
* Support for non-overlapping floating text
* Copyright (C) 2008 Douglas Boffey <DougABoffey@netscape.net>
*
* This file is part of Aethyra.
*
* This program 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; either version 2 of the License, or
* any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <cstring>
#include "text.h"
#include "textmanager.h"
TextManager *textManager = 0;
TextManager::TextManager()
{
}
void TextManager::addText(Text *text)
{
place(text, 0, text->mX, text->mY, text->mHeight);
mTextList.push_back(text);
}
void TextManager::moveText(Text *text, int x, int y)
{
text->mX = x;
text->mY = y;
place(text, text, text->mX, text->mY, text->mHeight);
}
void TextManager::removeText(const Text *text)
{
for (TextList::iterator ptr = mTextList.begin(),
pEnd = mTextList.end(); ptr != pEnd; ++ptr)
{
if (*ptr == text)
{
mTextList.erase(ptr);
return;
}
}
}
TextManager::~TextManager()
{
}
void TextManager::draw(gcn::Graphics *graphics, int xOff, int yOff)
{
for (TextList::iterator bPtr = mTextList.begin(), ePtr = mTextList.end();
bPtr != ePtr; ++bPtr)
{
(*bPtr)->draw(graphics, xOff, yOff);
}
}
void TextManager::place(const Text *textObj, const Text *omit,
int &x, int &y, int h)
{
int xLeft = textObj->mX;
int xRight = xLeft + textObj->mWidth - 1;
const int TEST = 100; // Number of lines to test for text
bool occupied[TEST]; // is some other text obscuring this line?
std::memset(&occupied, 0, sizeof(occupied)); // set all to false
int wantedTop = (TEST - h) / 2; // Entry in occupied at top of text
int occupiedTop = y - wantedTop; // Line in map representing to of occupied
for (TextList::const_iterator ptr = mTextList.begin(),
pEnd = mTextList.end(); ptr != pEnd; ++ptr)
{
if (*ptr != omit &&
(*ptr)->mX <= xRight &&
(*ptr)->mX + (*ptr)->mWidth > xLeft)
{
int from = (*ptr)->mY - occupiedTop;
int to = from + (*ptr)->mHeight - 1;
if (to < 0 || from >= TEST) // out of range considered
continue;
if (from < 0)
from = 0;
if (to >= TEST)
to = TEST - 1;
for (int i = from; i <= to; ++i)
occupied[i] = true;
}
}
bool ok = true;
for (int i = wantedTop; i < wantedTop + h; ++i)
{
ok = ok && !occupied[i];
}
if (ok)
return;
// Have to move it up or down, so find nearest spaces either side
int consec = 0;
int upSlot = -1; // means not found
for (int seek = wantedTop + h - 2; seek >= 0; --seek)
{
if (occupied[seek])
{
consec = 0;
}
else
{
if (++consec == h)
{
upSlot = seek;
break;
}
}
}
int downSlot = -1;
consec = 0;
for (int seek = wantedTop + 1; seek < TEST; ++seek)
{
if (occupied[seek])
{
consec = 0;
}
else
{
if (++consec == h)
{
downSlot = seek - h + 1;
break;
}
}
}
if (upSlot == -1 && downSlot == -1) // no good solution, so leave as is
{
return;
}
if (upSlot == -1) // must go down
{
y += downSlot - wantedTop;
return;
}
if (downSlot == -1) // must go up
{
y -= wantedTop - upSlot;
return;
}
if (wantedTop - upSlot > downSlot - wantedTop) // down is better
{
y += downSlot - wantedTop;
}
else
{
y -= wantedTop - upSlot;
}
}
|
