summaryrefslogtreecommitdiff
path: root/src/gui/browserbox.cpp
blob: dbecf72b1917f523f2859d2b2f1fae9f92b81872 (plain) (blame)
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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
/*
 *  The Mana World
 *  Copyright (C) 2004  The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  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 <algorithm>

#include "browserbox.h"
#include "colour.h"
#include "linkhandler.h"
#include "truetypefont.h"

BrowserBox::BrowserBox(unsigned int mode):
    gcn::Widget(),
    mMode(mode), mHighMode(UNDERLINE | BACKGROUND),
    mOpaque(true),
    mUseLinksAndUserColors(true),
    mSelectedLink(-1),
    mMaxRows(0)
{
    setFocusable(true);
    addMouseListener(this);
}

BrowserBox::~BrowserBox()
{
}

void BrowserBox::setLinkHandler(LinkHandler* linkHandler)
{
    mLinkHandler = linkHandler;
}

void BrowserBox::setOpaque(bool opaque)
{
    mOpaque = opaque;
}

void BrowserBox::setHighlightMode(unsigned int highMode)
{
    mHighMode = highMode;
}

void BrowserBox::disableLinksAndUserColors()
{
    mUseLinksAndUserColors = false;
}

void BrowserBox::addRow(const std::string &row)
{
    std::string tmp = row;
    std::string newRow;
    BROWSER_LINK bLink;
    int idx1, idx2, idx3;
    TrueTypeFont *font = static_cast<TrueTypeFont*>(getFont());

    // Use links and user defined colors
    if (mUseLinksAndUserColors)
    {
        // Check for links in format "@@link|Caption@@"
        idx1 = tmp.find("@@");
        while (idx1 >= 0)
        {
            idx2 = tmp.find("|", idx1);
            idx3 = tmp.find("@@", idx2);
            bLink.link = tmp.substr(idx1 + 2, idx2 - (idx1 + 2));
            bLink.caption = tmp.substr(idx2 + 1, idx3 - (idx2 + 1));
            bLink.y1 = mTextRows.size() * font->getHeight();
            bLink.y2 = bLink.y1 + font->getHeight();

            newRow += tmp.substr(0, idx1);

            std::string tmp2 = newRow;
            idx1 = tmp2.find("##");
            while (idx1 >= 0)
            {
                tmp2.erase(idx1, 3);
                idx1 = tmp2.find("##");
            }
            bLink.x1 = font->getWidth(tmp2) - 1;
            bLink.x2 = bLink.x1 + font->getWidth(bLink.caption) + 1;

            mLinks.push_back(bLink);

            newRow += "##<" + bLink.caption;

            tmp.erase(0, idx3 + 2);
            if (tmp != "")
            {
                newRow += "##>";
            }
            idx1 = tmp.find("@@");
        }

        newRow += tmp;
    }

    // Don't use links and user defined colors
    else
    {
        newRow = row;
    }

    mTextRows.push_back(newRow);

    //discard older rows when a row limit has been set
    if (mMaxRows > 0)
    {
        while (mTextRows.size() > mMaxRows) mTextRows.pop_front();
    }

    // Auto size mode
    if (mMode == AUTO_SIZE)
    {
        std::string plain = newRow;
        for (idx1 = plain.find("##"); idx1 >= 0; idx1 = plain.find("##"))
            plain.erase(idx1, 3);

        // Adjust the BrowserBox size
        int w = font->getWidth(plain);
        if (w > getWidth())
            setWidth(w);
    }

    if (mMode == AUTO_WRAP)
    {
        unsigned int y = 0;
        unsigned int nextChar;
        const char *hyphen = "~";
        int hyphenWidth = font->getWidth(hyphen);
        int x = 0;

        for (TextRowIterator i = mTextRows.begin(); i != mTextRows.end(); i++)
        {
            std::string row = *i;
            for (unsigned int j = 0; j < row.size(); j++)
            {
                std::string character = row.substr(j, 1);
                x += font->getWidth(character);
                nextChar = j + 1;

                // Wraping between words (at blank spaces)
                if ((nextChar < row.size()) && (row.at(nextChar) == ' '))
                {
                    int nextSpacePos = row.find(" ", (nextChar + 1));
                    if (nextSpacePos <= 0)
                    {
                        nextSpacePos = row.size() - 1;
                    }
                    int nextWordWidth = font->getWidth(
                            row.substr(nextChar,
                                (nextSpacePos - nextChar)));

                    if ((x + nextWordWidth + 10) > getWidth())
                    {
                        x = 15; // Ident in new line
                        y += 1;
                        j++;
                    }
                }
                // Wrapping looong lines (brutal force)
                else if ((x + 2 * hyphenWidth) > getWidth())
                {
                    x = 15; // Ident in new line
                    y += 1;
                }
            }
        }

        setHeight(font->getHeight() * (mTextRows.size() + y));
    }
    else
    {
        setHeight(font->getHeight() * mTextRows.size());
    }
}

void BrowserBox::clearRows()
{
    mTextRows.clear();
    mLinks.clear();
    setWidth(0);
    mSelectedLink = -1;
}

struct MouseOverLink
{
    MouseOverLink(int x, int y) : mX(x),mY(y) { }
    bool operator() (BROWSER_LINK &link)
    {
        return (mX >= link.x1 && mX < link.x2 &&
                mY >= link.y1 && mY < link.y2);
    }
    int mX, mY;
};

void BrowserBox::mousePressed(gcn::MouseEvent &event)
{
    LinkIterator i = find_if(mLinks.begin(), mLinks.end(),
            MouseOverLink(event.getX(), event.getY()));

    if (i != mLinks.end()) {
        mLinkHandler->handleLink(i->link);
    }
}

void BrowserBox::mouseMoved(gcn::MouseEvent &event)
{
    LinkIterator i = find_if(mLinks.begin(), mLinks.end(),
            MouseOverLink(event.getX(), event.getY()));

    mSelectedLink = (i != mLinks.end()) ? (i - mLinks.begin()) : -1;
}

void BrowserBox::draw(gcn::Graphics *graphics)
{
    if (mOpaque)
    {
        graphics->setColor(gcn::Color(BGCOLOR));
        graphics->fillRectangle(gcn::Rectangle(0, 0, getWidth(), getHeight()));
    }

    if (mSelectedLink >= 0)
    {
        if ((mHighMode & BACKGROUND))
        {
            graphics->setColor(gcn::Color(HIGHLIGHT));
            graphics->fillRectangle(gcn::Rectangle(
                        mLinks[mSelectedLink].x1,
                        mLinks[mSelectedLink].y1,
                        mLinks[mSelectedLink].x2 - mLinks[mSelectedLink].x1,
                        mLinks[mSelectedLink].y2 - mLinks[mSelectedLink].y1
                        ));
        }

        if ((mHighMode & UNDERLINE))
        {
            bool valid;
            graphics->setColor(gcn::Color(textColour->getColour('<', valid)));
            graphics->drawLine(
                    mLinks[mSelectedLink].x1,
                    mLinks[mSelectedLink].y2,
                    mLinks[mSelectedLink].x2,
                    mLinks[mSelectedLink].y2);
        }
    }

    int x = 0, y = 0;
    int wrappedLines = 0;
    TrueTypeFont *font = static_cast<TrueTypeFont*>(getFont());

    graphics->setColor(BLACK);
    for (TextRowIterator i = mTextRows.begin(); i != mTextRows.end(); i++)
    {
        int selColor = BLACK;
        int prevColor = selColor;
        std::string row = *(i);
        bool wrapped = false;
        x = 0;

        // Check for separator lines
        if (row.find("---", 0) == 0)
        {
            for (x = 0; x < getWidth(); x++)
            {
                font->drawString(graphics, "-", x, y);
                x += font->getWidth("-") - 2;
            }
            y += font->getHeight();
            continue;
        }

        // TODO: Check if we must take texture size limits into account here
        // TODO: Check if some of the O(n) calls can be removed
        for (std::string::size_type start = 0, end = std::string::npos;
                start != std::string::npos;
                start = end, end = std::string::npos)
        {
            // Wrapped line continuation shall be indented
            if (wrapped)
            {
                y += font->getHeight();
                x = 15;
            }

            // "Tokenize" the string at control sequences
            if (mUseLinksAndUserColors)
                end = row.find("##", start + 1);

            if (mUseLinksAndUserColors ||
                    (!mUseLinksAndUserColors && (start == 0)))
            {
                // Check for color change in format "##x", x = [L,P,0..9]
                if (row.find("##", start) == start && row.size() > start + 2)
                {
                    char c = row.at(start + 2);
                    if (c == '>')
                    {
                        selColor = prevColor;
                    }
                    else
                    {
                        bool valid;
                        int rgb = textColour->getColour(c, valid);
                        if (c == '<')
                        {
                            prevColor = selColor;
                        }
                        if (valid)
                        {
                            selColor = rgb;
                        }
                    }
                    start += 3;

                    if (start == row.size())
                    {
                        break;
                    }
                }
                graphics->setColor(gcn::Color(selColor));
            }

            std::string::size_type len =
                end == std::string::npos ? end : end - start;
            std::string part = row.substr(start, len);

            // Auto wrap mode
            if (mMode == AUTO_WRAP &&
                    (x + font->getWidth(part.c_str()) + 10) > getWidth())
            {
                bool forced = false;
                char const *hyphen = "~";
                int hyphenWidth =  font->getWidth(hyphen);

                /* FIXME: This code layout makes it easy to crash remote
                   clients by talking garbage. Forged long utf-8 characters
                   will cause either a buffer underflow in substr or an
                   infinite loop in the main loop. */
                do
                {
                    if (!forced)
                        end = row.rfind(" ", end);

                    // Check if we have to (stupidly) force-wrap
                    if (end == std::string::npos || end <= start)
                    {
                        forced = true;
                        end = row.size();
                        x += hyphenWidth * 2; // Account for the wrap-notifier
                        continue;
                    }

                    // Skip to the start of the current character
                    while ((row[end] & 192) == 128)
                        end--;
                    end--; // And then to the last byte of the previous one

                    part = row.substr(start, end - start + 1);
                } while ((x + font->getWidth(part.c_str()) + 10) > getWidth());

                if (forced)
                {
                    x -= hyphenWidth; // Remove the wrap-notifier accounting
                    font->drawString(graphics, hyphen,
                            getWidth() - hyphenWidth, y);
                    end++; // Skip to the next character
                }
                else
                    end += 2; // Skip to after the space

                wrapped = true;
                wrappedLines++;
            }
            font->drawString(graphics, part, x, y);
            x += font->getWidth(part.c_str());
        }
        y += font->getHeight();
        setHeight((mTextRows.size() + wrappedLines) * font->getHeight());
    }
}